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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* This code is (C) AllegroGL contributors, and double licensed under</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * the GPL and zlib licenses. See gpl.txt or zlib.txt for details.</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &lt;allegro.h&gt;</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#include &lt;allegro/internal/aintern.h&gt;</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="alleggl_8h.html">alleggl.h</a>&quot;</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;glvtable.h&quot;</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;allglint.h&quot;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="keyword">static</span> BITMAP *allegro_gl_win_init_windowed(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> v_w, <span class="keywordtype">int</span> v_h,</div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;                                            <span class="keywordtype">int</span> color_depth);</div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="keyword">static</span> BITMAP *allegro_gl_win_init_fullscreen(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> v_w, <span class="keywordtype">int</span> v_h,</div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;                                              <span class="keywordtype">int</span> color_depth);</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_win_exit(<span class="keyword">struct</span> BITMAP *b);</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="keyword">static</span> GFX_MODE_LIST* allegro_gl_win_fetch_mode_list(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">static</span> <span class="keyword">struct </span>allegro_gl_driver allegro_gl_win;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#define PREFIX_I                &quot;agl-win INFO: &quot;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#define PREFIX_W                &quot;agl-win WARNING: &quot;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#define PREFIX_E                &quot;agl-win ERROR: &quot;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">static</span> BITMAP *<a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a> = NULL;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">/* Windowed mode driver */</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;GFX_DRIVER gfx_allegro_gl_windowed = {</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <a class="code" href="alleggl_8h.html#a5fcf0497998fecc3c04bb5b6ce66782b">GFX_OPENGL_WINDOWED</a>,</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    EMPTY_STRING,</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    EMPTY_STRING,</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="stringliteral">&quot;AllegroGL Windowed (Win32)&quot;</span>,</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    allegro_gl_win_init_windowed,</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    allegro_gl_win_exit,</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    NULL,                       <span class="comment">/* scrolling not implemented */</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    NULL,                       <span class="comment">/* vsync, may use for flip? */</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    NULL,                       <span class="comment">/* No h/w pallete, not using indexed mode */</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    NULL, NULL,                 <span class="comment">/* Still no scrolling */</span></div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    NULL,                       <span class="comment">/* No triple buffering */</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <a class="code" href="videovtb_8c.html#a4dadb9b189453bc9693c032ce63fc5b4">allegro_gl_create_video_bitmap</a>,</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <a class="code" href="videovtb_8c.html#a69a97f6c3805246762fbefb545f20f87">allegro_gl_destroy_video_bitmap</a>,</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    NULL, NULL,                 <span class="comment">/* No show/request video bitmaps */</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    NULL, NULL,                 <span class="comment">/* No system bitmaps */</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    allegro_gl_set_mouse_sprite,</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    allegro_gl_show_mouse,</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    allegro_gl_hide_mouse,</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    allegro_gl_move_mouse,</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    allegro_gl_drawing_mode,</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    NULL, NULL,           <span class="comment">/* No video state stuff */</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    allegro_gl_set_blender_mode,</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    NULL,                       <span class="comment">/* No fetch_mode_list */</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    0,0,                        <span class="comment">/* physical (not virtual!) screen size */</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    0,                          <span class="comment">/* true if video memory is linear */</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    0,                          <span class="comment">/* bank size, in bytes */</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    0,                          <span class="comment">/* bank granularity, in bytes */</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    0,                          <span class="comment">/* video memory size, in bytes */</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    0,                          <span class="comment">/* physical address of video memory */</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    TRUE                        <span class="comment">/* Windowed mode */</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;};</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment">/* Fullscreen driver */</span></div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;GFX_DRIVER gfx_allegro_gl_fullscreen = {</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <a class="code" href="alleggl_8h.html#afd00c615b3351d54382b5f883b99544f">GFX_OPENGL_FULLSCREEN</a>,</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    EMPTY_STRING,</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    EMPTY_STRING,</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    <span class="stringliteral">&quot;AllegroGL Fullscreen (Win32)&quot;</span>,</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    allegro_gl_win_init_fullscreen,</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    allegro_gl_win_exit,</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    NULL,                       <span class="comment">/* scrolling not implemented */</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    NULL,                       <span class="comment">/* vsync, may use for flip? */</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    NULL,                       <span class="comment">/* No h/w pallete, not using indexed mode */</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    NULL, NULL,                 <span class="comment">/* Still no scrolling */</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    NULL,                       <span class="comment">/* No triple buffering */</span></div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <a class="code" href="videovtb_8c.html#a4dadb9b189453bc9693c032ce63fc5b4">allegro_gl_create_video_bitmap</a>,</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <a class="code" href="videovtb_8c.html#a69a97f6c3805246762fbefb545f20f87">allegro_gl_destroy_video_bitmap</a>,</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    NULL, NULL,                 <span class="comment">/* No show/request video bitmaps */</span></div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    NULL, NULL,                 <span class="comment">/* No system bitmaps */</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    allegro_gl_set_mouse_sprite,</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    allegro_gl_show_mouse,</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    allegro_gl_hide_mouse,</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    allegro_gl_move_mouse,</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    allegro_gl_drawing_mode,</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    NULL, NULL,           <span class="comment">/* No video state stuff */</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    allegro_gl_set_blender_mode,</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    allegro_gl_win_fetch_mode_list, <span class="comment">/* fetch_mode_list */</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    0,0,                        <span class="comment">/* physical (not virtual!) screen size */</span></div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    0,                          <span class="comment">/* true if video memory is linear */</span></div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    0,                          <span class="comment">/* bank size, in bytes */</span></div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    0,                          <span class="comment">/* bank granularity, in bytes */</span></div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    0,                          <span class="comment">/* video memory size, in bytes */</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    0,                          <span class="comment">/* physical address of video memory */</span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    FALSE                       <span class="comment">/* Windowed mode */</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;};</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="comment">/* XXX &lt;rohannessian&gt; We should move those variable definitions into a struct,</span></div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="comment"> * for when multiple windows end up being supported.</span></div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment">/* Device Context used for the Allegro window. Note that only one window</span></div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment"> * is supported, so only onyl HDC is needed. This is shared by the AGL</span></div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment"> * extension code.</span></div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;HDC __allegro_gl_hdc = NULL;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment">/* Render Context used by AllegroGL, once screen mode was set. Note that only</span></div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment"> * a single window is supported.</span></div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="keyword">static</span> HGLRC allegro_glrc = NULL;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="comment">/* Full-screen flag, for the current context. */</span></div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> fullscreen = 0;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="comment">/* Current window handle */</span></div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="keyword">static</span> HWND wnd = NULL;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment">/* If AGL was initialized */</span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> initialized = 0;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="comment">/* XXX &lt;rohannessian&gt; Put those globals as function parameters */</span></div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="comment">/* Note - these globals should really end up as parameters to functions.</span></div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="keyword">static</span> DWORD style_saved, exstyle_saved;</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="keyword">static</span> DEVMODE dm_saved;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> test_windows_created = 0;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> new_w = 0, new_h = 0;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="keyword">static</span> PIXELFORMATDESCRIPTOR pfd = {</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="keyword">sizeof</span>(PIXELFORMATDESCRIPTOR),  <span class="comment">/* size of this pfd */</span></div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    1,                          <span class="comment">/* version number */</span></div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    PFD_DRAW_TO_WINDOW          <span class="comment">/* support window */</span></div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        | PFD_SUPPORT_OPENGL    <span class="comment">/* support OpenGL */</span></div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        | PFD_DOUBLEBUFFER,     <span class="comment">/* double buffered */</span></div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    PFD_TYPE_RGBA,              <span class="comment">/* RGBA type */</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    24,                         <span class="comment">/* 24-bit color depth */</span></div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    0, 0, 0, 0, 0, 0,           <span class="comment">/* color bits ignored */</span></div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    0,                          <span class="comment">/* no alpha buffer */</span></div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    0,                          <span class="comment">/* shift bit ignored */</span></div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    0,                          <span class="comment">/* no accumulation buffer */</span></div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    0, 0, 0, 0,                 <span class="comment">/* accum bits ignored */</span></div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    0,                          <span class="comment">/* z-buffer */</span></div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    0,                          <span class="comment">/* no stencil buffer */</span></div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    0,                          <span class="comment">/* no auxiliary buffer */</span></div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    PFD_MAIN_PLANE,             <span class="comment">/* main layer */</span></div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    0,                          <span class="comment">/* reserved */</span></div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    0, 0, 0                     <span class="comment">/* layer masks ignored */</span></div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;};</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;<span class="comment">/* Logs a Win32 error/warning message in the log file.</span></div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> log_win32_msg(<span class="keyword">const</span> <span class="keywordtype">char</span> *prefix, <span class="keyword">const</span> <span class="keywordtype">char</span> *func,</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                          <span class="keyword">const</span> <span class="keywordtype">char</span> *error_msg, DWORD err) {</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <span class="keywordtype">char</span> *err_msg = NULL;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    BOOL free_msg = TRUE;</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    <span class="comment">/* Get the formatting error string from Windows. Note that only the</span></div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="comment">     * bottom 14 bits matter - the rest are reserved for various library</span></div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="comment">     * IDs and type of error.</span></div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    <span class="keywordflow">if</span> (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;                     | FORMAT_MESSAGE_FROM_SYSTEM</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;                     | FORMAT_MESSAGE_IGNORE_INSERTS,</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                     NULL, err &amp; 0x3FFF,</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;                     MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                     (LPTSTR) &amp;err_msg, 0, NULL)) {</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        err_msg = <span class="stringliteral">&quot;(Unable to decode error code)  &quot;</span>;</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        free_msg = FALSE;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    }</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="comment">/* Remove two trailing characters */</span></div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keywordflow">if</span> (err_msg &amp;&amp; strlen(err_msg) &gt; 1)</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        *(err_msg + strlen(err_msg) - 2) = <span class="charliteral">&#39;\0&#39;</span>;</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    TRACE(<span class="stringliteral">&quot;%s%s(): %s %s (0x%08lx)\n&quot;</span>, prefix, func,</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;          error_msg ? error_msg : <span class="stringliteral">&quot;&quot;</span>,</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;          err_msg ? err_msg : <span class="stringliteral">&quot;(null)&quot;</span>,</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;          (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>)err);</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="keywordflow">if</span> (free_msg) {</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        LocalFree(err_msg);</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    }</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    <span class="keywordflow">return</span>;</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;}</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="comment">/* Logs an error */</span></div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> log_win32_error(<span class="keyword">const</span> <span class="keywordtype">char</span> *func, <span class="keyword">const</span> <span class="keywordtype">char</span> *error_msg,</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                            DWORD err) {</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    log_win32_msg(PREFIX_E, func, error_msg, err);</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;}</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;<span class="comment">/* Logs a warning */</span></div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> log_win32_warning(<span class="keyword">const</span> <span class="keywordtype">char</span> *func, <span class="keyword">const</span> <span class="keywordtype">char</span> *error_msg,</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                              DWORD err) {</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    log_win32_msg(PREFIX_W, func, error_msg, err);</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;}</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="comment">/* Logs a note */</span></div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> log_win32_note(<span class="keyword">const</span> <span class="keywordtype">char</span> *func, <span class="keyword">const</span> <span class="keywordtype">char</span> *error_msg, DWORD err) {</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    log_win32_msg(PREFIX_I, func, error_msg, err);</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;}</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="comment">/* Define the AllegroGL Test window class */</span></div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="preprocessor">#define ALLEGROGL_TEST_WINDOW_CLASS &quot;AllegroGLTestWindow&quot;</span></div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="comment">/* Registers the test window</span></div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;<span class="comment"> * Returns 0 on success, non-zero on failure.</span></div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> register_test_window()</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;{</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    WNDCLASS wc;</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    memset(&amp;wc, 0, <span class="keyword">sizeof</span>(wc));</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;    wc.lpfnWndProc = DefWindowProc;</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    wc.hInstance = GetModuleHandle(NULL);</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    wc.hIcon = LoadIcon(GetModuleHandle(NULL), IDI_APPLICATION);</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    wc.hCursor = LoadCursor(NULL, IDC_ARROW);</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    wc.lpszClassName = ALLEGROGL_TEST_WINDOW_CLASS;</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;    <span class="keywordflow">if</span> (!RegisterClass(&amp;wc)) {</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        DWORD err = GetLastError();</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;        <span class="keywordflow">if</span> (err != ERROR_CLASS_ALREADY_EXISTS) {</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;            log_win32_error(<span class="stringliteral">&quot;register_test_window&quot;</span>,</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;                            <span class="stringliteral">&quot;Unable to register the window class!&quot;</span>, err);</div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;            <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;        }</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    }</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;}</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;</div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">/* Creates the test window.</span></div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="comment"> * The window class must have already been registered.</span></div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment"> * Returns the window handle, or NULL on failure.</span></div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="keyword">static</span> HWND create_test_window()</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;{</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    HWND wnd = CreateWindow(ALLEGROGL_TEST_WINDOW_CLASS,</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;                            <span class="stringliteral">&quot;AllegroGL Test Window&quot;</span>,</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;                            WS_POPUP | WS_CLIPCHILDREN,</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;                            0, 0, new_w, new_h,</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;                            NULL, NULL,</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;                            GetModuleHandle(NULL),</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;                            NULL);</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;    <span class="keywordflow">if</span> (!wnd) {</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;        log_win32_error(<span class="stringliteral">&quot;create_test_window&quot;</span>,</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;                        <span class="stringliteral">&quot;Unable to create a test window!&quot;</span>, GetLastError());</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    }       </div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    test_windows_created++;</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    <span class="keywordflow">return</span> wnd;</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;}</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;<span class="comment">/* Print the pixel format info */</span></div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> print_pixel_format(<span class="keyword">struct</span> allegro_gl_display_info *dinfo) {</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    <span class="keywordflow">if</span> (!dinfo) {</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;        <span class="keywordflow">return</span>;</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;    }</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    </div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Acceleration: %s\n&quot;</span>, ((dinfo-&gt;rmethod == 0) ? <span class="stringliteral">&quot;No&quot;</span></div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;                             : ((dinfo-&gt;rmethod == 1) ? <span class="stringliteral">&quot;Yes&quot;</span> : <span class="stringliteral">&quot;Unknown&quot;</span>)));</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;RGBA: %i.%i.%i.%i\n&quot;</span>, dinfo-&gt;pixel_size.rgba.r,</div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;          dinfo-&gt;pixel_size.rgba.g, dinfo-&gt;pixel_size.rgba.b,</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;          dinfo-&gt;pixel_size.rgba.a);</div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    </div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Accum: %i.%i.%i.%i\n&quot;</span>, dinfo-&gt;accum_size.rgba.r,</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;          dinfo-&gt;accum_size.rgba.g, dinfo-&gt;accum_size.rgba.b,</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;          dinfo-&gt;accum_size.rgba.a);</div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;    </div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;DblBuf: %i Zbuf: %i Stereo: %i Aux: %i Stencil: %i\n&quot;</span>,</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;          dinfo-&gt;doublebuffered, dinfo-&gt;depth_size, dinfo-&gt;stereo,</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;          dinfo-&gt;aux_buffers, dinfo-&gt;stencil_size);</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;    </div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Shift: %i.%i.%i.%i\n&quot;</span>, dinfo-&gt;r_shift, dinfo-&gt;g_shift,</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;          dinfo-&gt;b_shift, dinfo-&gt;a_shift);</div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Sample Buffers: %i Samples: %i\n&quot;</span>,</div><div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;          dinfo-&gt;sample_buffers, dinfo-&gt;samples);</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;    </div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Decoded bpp: %i\n&quot;</span>, dinfo-&gt;colour_depth);   </div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;}</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;</div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;<span class="comment">/* Decodes the pixel format into an agl_display_info struct and logs the pixel</span></div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="comment"> * format in the trace file.</span></div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> decode_pixel_format(PIXELFORMATDESCRIPTOR * pfd, HDC hdc, <span class="keywordtype">int</span> format,</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;                               <span class="keyword">struct</span> allegro_gl_display_info *dinfo,</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;                               <span class="keywordtype">int</span> desktop_depth)</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;{</div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Decoding: \n&quot;</span>);</div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;    <span class="comment">/* Not interested if it doesn&#39;t support OpenGL and RGBA */</span></div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;    <span class="keywordflow">if</span> (!(pfd-&gt;dwFlags &amp; PFD_SUPPORT_OPENGL)) {</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;OpenGL Unsupported\n&quot;</span>);</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;    }</div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;    <span class="keywordflow">if</span> (pfd-&gt;iPixelType != PFD_TYPE_RGBA) {</div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;Not RGBA mode\n&quot;</span>);</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;    }</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    <span class="keywordflow">if</span> ((pfd-&gt;cColorBits != desktop_depth)</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;     &amp;&amp; (pfd-&gt;cColorBits != 32 || desktop_depth &lt; 24)) {</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;Current color depth != &quot;</span></div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;              <span class="stringliteral">&quot;pixel format color depth\n&quot;</span>);</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;        <span class="comment">//return -1;  /* XXX &lt;rohannessian&gt; Why is this a bad thing? */</span></div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;    }</div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;    </div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    <span class="comment">/* hardware acceleration */</span></div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;    <span class="keywordflow">if</span> (((pfd-&gt;dwFlags &amp; PFD_GENERIC_ACCELERATED)</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;         &amp;&amp; (pfd-&gt;dwFlags &amp; PFD_GENERIC_FORMAT))</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;        || (!(pfd-&gt;dwFlags &amp; PFD_GENERIC_ACCELERATED)</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;            &amp;&amp; !(pfd-&gt;dwFlags &amp; PFD_GENERIC_FORMAT)))</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;        dinfo-&gt;rmethod = 1;</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;    <span class="keywordflow">else</span></div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;        dinfo-&gt;rmethod = 0;</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    <span class="comment">/* Depths of colour buffers */</span></div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;    dinfo-&gt;pixel_size.rgba.r = pfd-&gt;cRedBits;</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;    dinfo-&gt;pixel_size.rgba.g = pfd-&gt;cGreenBits;</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;    dinfo-&gt;pixel_size.rgba.b = pfd-&gt;cBlueBits;</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;    dinfo-&gt;pixel_size.rgba.a = pfd-&gt;cAlphaBits;</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;    <span class="comment">/* Depths of accumulation buffer */</span></div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;    dinfo-&gt;accum_size.rgba.r = pfd-&gt;cAccumRedBits;</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;    dinfo-&gt;accum_size.rgba.g = pfd-&gt;cAccumGreenBits;</div><div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;    dinfo-&gt;accum_size.rgba.b = pfd-&gt;cAccumBlueBits;</div><div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;    dinfo-&gt;accum_size.rgba.a = pfd-&gt;cAccumAlphaBits;</div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;</div><div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;    <span class="comment">/* Miscellaneous settings */</span></div><div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;    dinfo-&gt;doublebuffered = pfd-&gt;dwFlags &amp; PFD_DOUBLEBUFFER;</div><div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;    dinfo-&gt;stereo = pfd-&gt;dwFlags &amp; PFD_STEREO;</div><div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;    dinfo-&gt;aux_buffers = pfd-&gt;cAuxBuffers;</div><div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;    dinfo-&gt;depth_size = pfd-&gt;cDepthBits;</div><div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;    dinfo-&gt;stencil_size = pfd-&gt;cStencilBits;</div><div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;</div><div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;    <span class="comment">/* These are the component shifts, like Allegro&#39;s _rgb_*_shift_*. */</span></div><div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;    dinfo-&gt;r_shift = pfd-&gt;cRedShift;</div><div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;    dinfo-&gt;g_shift = pfd-&gt;cGreenShift;</div><div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;    dinfo-&gt;b_shift = pfd-&gt;cBlueShift;</div><div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;    dinfo-&gt;a_shift = pfd-&gt;cAlphaShift;</div><div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;</div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;    <span class="comment">/* Multisampling isn&#39;t supported under Windows if we don&#39;t also use</span></div><div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;<span class="comment">     * WGL_ARB_pixel_format or WGL_EXT_pixel_format.</span></div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;    dinfo-&gt;sample_buffers = 0;</div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;    dinfo-&gt;samples = 0;</div><div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;</div><div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;    <span class="comment">/* Float depth/color isn&#39;t supported under Windows if we don&#39;t also use</span></div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;<span class="comment">     * AGL_ARB_pixel_format or WGL_EXT_pixel_format.</span></div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;    dinfo-&gt;float_color = 0;</div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;    dinfo-&gt;float_depth = 0;</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;    <span class="comment">/* This bit is the same as the X code, setting some things based on</span></div><div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;<span class="comment">     * what we&#39;ve read out of the PFD. */</span></div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;    dinfo-&gt;colour_depth = 0;</div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;    <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.r == 5 &amp;&amp; dinfo-&gt;pixel_size.rgba.b == 5) {</div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;        <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.g == 5)</div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;            dinfo-&gt;colour_depth = 15;</div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;        <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.g == 6)</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;            dinfo-&gt;colour_depth = 16;</div><div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    }</div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;    <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.r == 8</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;        &amp;&amp; dinfo-&gt;pixel_size.rgba.g == 8 &amp;&amp; dinfo-&gt;pixel_size.rgba.b == 8) {</div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;        <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.a == 8)</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;            dinfo-&gt;colour_depth = 32;</div><div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;        <span class="keywordflow">else</span></div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;            dinfo-&gt;colour_depth = 24;</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;    }</div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;</div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;</div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;    dinfo-&gt;allegro_format = (dinfo-&gt;colour_depth != 0)</div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;        &amp;&amp; (dinfo-&gt;g_shift == dinfo-&gt;pixel_size.rgba.b)</div><div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;        &amp;&amp; (dinfo-&gt;r_shift * dinfo-&gt;b_shift == 0)</div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;        &amp;&amp; (dinfo-&gt;r_shift + dinfo-&gt;b_shift ==</div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;            dinfo-&gt;pixel_size.rgba.b + dinfo-&gt;pixel_size.rgba.g);</div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;</div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;}</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;</div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;</div><div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;</div><div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;<span class="comment">/* Decodes the pixel format into an agl_display_info struct and logs the pixel</span></div><div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;<span class="comment"> * format in the trace file.</span></div><div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> decode_pixel_format_attrib(<span class="keyword">struct</span> allegro_gl_display_info *dinfo,</div><div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;                          <span class="keywordtype">int</span> num_attribs, <span class="keyword">const</span> <span class="keywordtype">int</span> *attrib, <span class="keyword">const</span> <span class="keywordtype">int</span> *value,</div><div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;                          <span class="keywordtype">int</span> desktop_depth) {</div><div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;    <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;    </div><div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Decoding: \n&quot;</span>);</div><div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;</div><div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;    dinfo-&gt;samples = 0;</div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;    dinfo-&gt;sample_buffers = 0;</div><div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;    dinfo-&gt;float_depth = 0;</div><div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;    dinfo-&gt;float_color = 0;</div><div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;    <span class="keywordflow">for</span> (i = 0; i &lt; num_attribs; i++) {</div><div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;</div><div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;        <span class="comment">/* Not interested if it doesn&#39;t support OpenGL or window drawing or</span></div><div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;<span class="comment">         * RGBA.</span></div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;<span class="comment">         */</span></div><div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;        <span class="keywordflow">if</span> (attrib[i] == WGL_SUPPORT_OPENGL_ARB &amp;&amp; value[i] == 0) { </div><div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;            TRACE(PREFIX_I <span class="stringliteral">&quot;OpenGL Unsupported\n&quot;</span>);</div><div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;            <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;        }</div><div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_DRAW_TO_WINDOW_ARB &amp;&amp; value[i] == 0) {    </div><div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;            TRACE(PREFIX_I <span class="stringliteral">&quot;Can&#39;t draw to window\n&quot;</span>);</div><div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;            <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;        }</div><div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_PIXEL_TYPE_ARB &amp;&amp;</div><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;                (value[i] != WGL_TYPE_RGBA_ARB</div><div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;                 &amp;&amp; value[i] != WGL_TYPE_RGBA_FLOAT_ARB)) { </div><div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;            TRACE(PREFIX_I <span class="stringliteral">&quot;Not RGBA mode\n&quot;</span>);</div><div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;            <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;        }</div><div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;        <span class="comment">/* Check for color depth matching */</span></div><div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_COLOR_BITS_ARB) {</div><div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;            <span class="keywordflow">if</span> ((value[i] != desktop_depth)</div><div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;             &amp;&amp; (value[i] != 32 || desktop_depth &lt; 24)) {</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;                TRACE(PREFIX_I <span class="stringliteral">&quot;Current color depth != &quot;</span></div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;                      <span class="stringliteral">&quot;pixel format color depth\n&quot;</span>);</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;                <span class="comment">//return -1; /* XXX &lt;rohannessian&gt; Why is this a bad thing? */</span></div><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;            }</div><div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;        }</div><div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;        <span class="comment">/* hardware acceleration */</span></div><div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_ACCELERATION_ARB) {</div><div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;            dinfo-&gt;rmethod = (value[i] == WGL_NO_ACCELERATION_ARB) ? 0 : 1;</div><div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;        }</div><div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;        <span class="comment">/* Depths of colour buffers */</span></div><div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_RED_BITS_ARB) {</div><div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;            dinfo-&gt;pixel_size.rgba.r = value[i];</div><div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;        }</div><div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_GREEN_BITS_ARB) {</div><div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;            dinfo-&gt;pixel_size.rgba.g = value[i];</div><div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;        }</div><div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_BLUE_BITS_ARB) {</div><div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;            dinfo-&gt;pixel_size.rgba.b = value[i];</div><div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;        }</div><div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_ALPHA_BITS_ARB) {</div><div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;            dinfo-&gt;pixel_size.rgba.a = value[i];</div><div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;        }</div><div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;        <span class="comment">/* Shift of color components */</span></div><div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_RED_SHIFT_ARB) {</div><div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;            dinfo-&gt;r_shift = value[i];</div><div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;        }</div><div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_GREEN_SHIFT_ARB) {</div><div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;            dinfo-&gt;g_shift = value[i];</div><div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;        }</div><div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_BLUE_SHIFT_ARB) {</div><div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;            dinfo-&gt;b_shift = value[i];</div><div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;        }</div><div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_ALPHA_SHIFT_ARB) {</div><div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;            dinfo-&gt;a_shift = value[i];</div><div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;        }</div><div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;</div><div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;        <span class="comment">/* Depths of accumulation buffer */</span></div><div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_ACCUM_RED_BITS_ARB) {</div><div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;            dinfo-&gt;accum_size.rgba.r = value[i];</div><div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;        }</div><div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_ACCUM_GREEN_BITS_ARB) {</div><div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;            dinfo-&gt;accum_size.rgba.g = value[i];</div><div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;        }</div><div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_ACCUM_BLUE_BITS_ARB) {</div><div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;            dinfo-&gt;accum_size.rgba.b = value[i];</div><div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;        }</div><div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_ACCUM_ALPHA_BITS_ARB) {</div><div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;            dinfo-&gt;accum_size.rgba.a = value[i];</div><div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;        }   </div><div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;        <span class="comment">/* Miscellaneous settings */</span></div><div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_DOUBLE_BUFFER_ARB) {</div><div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;            dinfo-&gt;doublebuffered = value[i];</div><div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;        }</div><div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_STEREO_ARB) {</div><div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;            dinfo-&gt;stereo = value[i];</div><div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        }</div><div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_AUX_BUFFERS_ARB) {</div><div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;            dinfo-&gt;aux_buffers = value[i];</div><div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;        }</div><div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_DEPTH_BITS_ARB) {</div><div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;            dinfo-&gt;depth_size = value[i];</div><div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;        }</div><div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_STENCIL_BITS_ARB) {</div><div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;            dinfo-&gt;stencil_size = value[i];</div><div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;        }</div><div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;        <span class="comment">/* Multisampling bits */</span></div><div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_SAMPLE_BUFFERS_ARB) {</div><div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;            dinfo-&gt;sample_buffers = value[i];</div><div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;        }</div><div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_SAMPLES_ARB) {</div><div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;            dinfo-&gt;samples = value[i];</div><div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;        }</div><div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;        <span class="comment">/* Float color */</span></div><div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;        <span class="keywordflow">if</span> (attrib[i] == WGL_PIXEL_TYPE_ARB</div><div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;          &amp;&amp; value[i] == WGL_TYPE_RGBA_FLOAT_ARB) {</div><div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;            dinfo-&gt;float_color = TRUE;</div><div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;        }</div><div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;        <span class="comment">/* Float depth */</span></div><div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (attrib[i] == WGL_DEPTH_FLOAT_EXT) {</div><div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;            dinfo-&gt;float_depth = value[i];</div><div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;        }</div><div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;    }</div><div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;</div><div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;    <span class="comment">/* This bit is the same as the X code, setting some things based on</span></div><div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;<span class="comment">     * what we&#39;ve read out of the PFD. */</span></div><div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;    dinfo-&gt;colour_depth = 0;</div><div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;    <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.r == 5 &amp;&amp; dinfo-&gt;pixel_size.rgba.b == 5) {</div><div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;        <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.g == 5)</div><div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;            dinfo-&gt;colour_depth = 15;</div><div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;        <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.g == 6)</div><div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;            dinfo-&gt;colour_depth = 16;</div><div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;    }</div><div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;    <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.r == 8</div><div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;        &amp;&amp; dinfo-&gt;pixel_size.rgba.g == 8 &amp;&amp; dinfo-&gt;pixel_size.rgba.b == 8) {</div><div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;        <span class="keywordflow">if</span> (dinfo-&gt;pixel_size.rgba.a == 8)</div><div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;            dinfo-&gt;colour_depth = 32;</div><div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;        <span class="keywordflow">else</span></div><div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;            dinfo-&gt;colour_depth = 24;</div><div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;    }</div><div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;</div><div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;    dinfo-&gt;allegro_format = (dinfo-&gt;colour_depth != 0)</div><div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;        &amp;&amp; (dinfo-&gt;g_shift == dinfo-&gt;pixel_size.rgba.b)</div><div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;        &amp;&amp; (dinfo-&gt;r_shift * dinfo-&gt;b_shift == 0)</div><div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;        &amp;&amp; (dinfo-&gt;r_shift + dinfo-&gt;b_shift ==</div><div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;            dinfo-&gt;pixel_size.rgba.b + dinfo-&gt;pixel_size.rgba.g);</div><div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;</div><div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;}</div><div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;</div><div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;</div><div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;</div><div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;<span class="keyword">typedef</span> <span class="keyword">struct </span>format_t {</div><div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;    <span class="keywordtype">int</span> score;</div><div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;    <span class="keywordtype">int</span> format;</div><div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;} format_t;</div><div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;</div><div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;</div><div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;</div><div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;<span class="comment">/* Helper function for sorting pixel formats by score */</span></div><div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> select_pixel_format_sorter(<span class="keyword">const</span> <span class="keywordtype">void</span> *p0, <span class="keyword">const</span> <span class="keywordtype">void</span> *p1) {</div><div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;    format_t *f0 = (format_t*)p0;</div><div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;    format_t *f1 = (format_t*)p1;</div><div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;</div><div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;    <span class="keywordflow">if</span> (f0-&gt;score == f1-&gt;score) {</div><div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;    }</div><div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (f0-&gt;score &gt; f1-&gt;score) {</div><div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;    }</div><div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;        <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;    }</div><div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;}</div><div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;</div><div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;</div><div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;</div><div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;<span class="comment">/* Describes the pixel format and assigns it a score */</span></div><div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;<span class="keywordtype">int</span> describe_pixel_format_old(HDC dc, <span class="keywordtype">int</span> fmt, <span class="keywordtype">int</span> desktop_depth,</div><div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;                               format_t *formats, <span class="keywordtype">int</span> *num_formats,</div><div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;                               <span class="keyword">struct</span> allegro_gl_display_info *pdinfo) {</div><div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;</div><div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;    <span class="keyword">struct </span>allegro_gl_display_info dinfo;</div><div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;    PIXELFORMATDESCRIPTOR pfd;</div><div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;    <span class="keywordtype">int</span> score = -1;</div><div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;    </div><div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;    <span class="keywordtype">int</span> result = DescribePixelFormat(dc, fmt, <span class="keyword">sizeof</span>(pfd), &amp;pfd);</div><div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;</div><div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;    <span class="comment">/* Remember old settings */</span></div><div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;    <span class="keywordflow">if</span> (pdinfo) {</div><div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;        dinfo = *pdinfo;</div><div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;    }</div><div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;</div><div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;    <span class="keywordflow">if</span> (!result) {</div><div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;        log_win32_warning(<span class="stringliteral">&quot;describe_pixel_format_old&quot;</span>,</div><div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;                          <span class="stringliteral">&quot;DescribePixelFormat() failed!&quot;</span>, GetLastError());</div><div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;    }</div><div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;    </div><div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;    result = !decode_pixel_format(&amp;pfd, dc, fmt, &amp;dinfo, desktop_depth);</div><div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;    </div><div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;    <span class="keywordflow">if</span> (result) {</div><div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;        print_pixel_format(&amp;dinfo);</div><div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;        score = __allegro_gl_score_config(fmt, &amp;dinfo);</div><div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;    }</div><div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;            </div><div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;    <span class="keywordflow">if</span> (score &lt; 0) {</div><div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;        <span class="keywordflow">return</span> -1; <span class="comment">/* Reject non-compliant pixel formats */</span></div><div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;    }</div><div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;</div><div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;    <span class="keywordflow">if</span> (formats &amp;&amp; num_formats) {</div><div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;        formats[*num_formats].score  = score;</div><div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;        formats[*num_formats].format = fmt;</div><div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;        (*num_formats)++;</div><div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;    }</div><div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;</div><div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;    <span class="keywordflow">if</span> (pdinfo) {</div><div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;        *pdinfo = dinfo;</div><div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;    }</div><div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;</div><div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;}</div><div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;</div><div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;</div><div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;</div><div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;<span class="keyword">static</span> AGL_GetPixelFormatAttribivARB_t __wglGetPixelFormatAttribivARB = NULL;</div><div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;<span class="keyword">static</span> AGL_GetPixelFormatAttribivEXT_t __wglGetPixelFormatAttribivEXT = NULL;</div><div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;</div><div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;</div><div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;</div><div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;<span class="comment">/* Describes the pixel format and assigns it a score */</span></div><div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;<span class="keywordtype">int</span> describe_pixel_format_new(HDC dc, <span class="keywordtype">int</span> fmt, <span class="keywordtype">int</span> desktop_depth,</div><div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;                              format_t *formats, <span class="keywordtype">int</span> *num_formats,</div><div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;                              <span class="keyword">struct</span> allegro_gl_display_info *pdinfo) {</div><div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;</div><div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;    <span class="keyword">struct </span>allegro_gl_display_info dinfo;</div><div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;    <span class="keywordtype">int</span> score = -1;</div><div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;</div><div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;    <span class="comment">/* Note: Even though we use te ARB suffix, all those enums are compatible</span></div><div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;<span class="comment">     * with EXT_pixel_format.</span></div><div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;    <span class="keywordtype">int</span> attrib[] = {</div><div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;        WGL_SUPPORT_OPENGL_ARB,</div><div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;        WGL_DRAW_TO_WINDOW_ARB,</div><div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;        WGL_PIXEL_TYPE_ARB,</div><div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;        WGL_ACCELERATION_ARB,</div><div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;        WGL_DOUBLE_BUFFER_ARB,</div><div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;        WGL_DEPTH_BITS_ARB,</div><div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;        WGL_COLOR_BITS_ARB,</div><div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;        WGL_RED_BITS_ARB,</div><div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;        WGL_GREEN_BITS_ARB,</div><div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;        WGL_BLUE_BITS_ARB,</div><div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;        WGL_ALPHA_BITS_ARB,</div><div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;        WGL_RED_SHIFT_ARB,</div><div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;        WGL_GREEN_SHIFT_ARB,</div><div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;        WGL_BLUE_SHIFT_ARB,</div><div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;        WGL_ALPHA_SHIFT_ARB,</div><div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;        WGL_STENCIL_BITS_ARB,</div><div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;        WGL_STEREO_ARB,</div><div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;        WGL_ACCUM_BITS_ARB,</div><div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;        WGL_ACCUM_RED_BITS_ARB,</div><div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;        WGL_ACCUM_GREEN_BITS_ARB,</div><div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;        WGL_ACCUM_BLUE_BITS_ARB,</div><div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;        WGL_ACCUM_ALPHA_BITS_ARB,</div><div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;        WGL_AUX_BUFFERS_ARB,</div><div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;</div><div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;        <span class="comment">/* The following are used by extensions that add to WGL_pixel_format.</span></div><div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;<span class="comment">         * If WGL_p_f isn&#39;t supported though, we can&#39;t use the (then invalid)</span></div><div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;<span class="comment">         * enums. We can&#39;t use any magic number either, so we settle for </span></div><div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;<span class="comment">         * replicating one. The pixel format decoder</span></div><div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;<span class="comment">         * (decode_pixel_format_attrib()) doesn&#39;t care about duplicates.</span></div><div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;<span class="comment">         */</span></div><div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;        WGL_AUX_BUFFERS_ARB, <span class="comment">/* placeholder for WGL_SAMPLE_BUFFERS_ARB */</span></div><div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;        WGL_AUX_BUFFERS_ARB, <span class="comment">/* placeholder for WGL_SAMPLES_ARB        */</span></div><div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;        WGL_AUX_BUFFERS_ARB, <span class="comment">/* placeholder for WGL_DEPTH_FLOAT_EXT    */</span></div><div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;    };</div><div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;</div><div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> num_attribs = <span class="keyword">sizeof</span>(attrib) / <span class="keyword">sizeof</span>(attrib[0]);</div><div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;    <span class="keywordtype">int</span> *value = (<span class="keywordtype">int</span>*)malloc(<span class="keyword">sizeof</span>(<span class="keywordtype">int</span>) * num_attribs);</div><div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;    <span class="keywordtype">int</span> result;</div><div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;    BOOL ret;</div><div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;    <span class="keywordtype">int</span> old_valid = __allegro_gl_valid_context;</div><div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;</div><div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;    <span class="comment">/* Can&#39;t allocate mem? */</span></div><div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;    <span class="keywordflow">if</span> (!value) {</div><div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;        TRACE(PREFIX_E <span class="stringliteral">&quot;describe_pixel_format_new(): Unable to allocate &quot;</span></div><div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;              <span class="stringliteral">&quot;memory for pixel format descriptor!\n&quot;</span>);</div><div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;    }</div><div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;</div><div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;    <span class="comment">/* Remember old settings */</span></div><div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;    <span class="keywordflow">if</span> (pdinfo) {</div><div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;        dinfo = *pdinfo;</div><div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;    }</div><div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;    </div><div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;</div><div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;    <span class="comment">/* If multisampling is supported, query for it. Note - we need to tell</span></div><div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;<span class="comment">     * allegro_gl_is_extension_supported() that we have a valid context,</span></div><div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;<span class="comment">     * even though AGL is not initialized yet.</span></div><div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;    __allegro_gl_valid_context = 1;</div><div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a">allegro_gl_is_extension_supported</a>(<span class="stringliteral">&quot;WGL_ARB_multisample&quot;</span>)) {</div><div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;        attrib[num_attribs - 3] = WGL_SAMPLE_BUFFERS_ARB;</div><div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;        attrib[num_attribs - 2] = WGL_SAMPLES_ARB;</div><div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;    }</div><div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a">allegro_gl_is_extension_supported</a>(<span class="stringliteral">&quot;WGL_EXT_depth_float&quot;</span>)) {</div><div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;        attrib[num_attribs - 1] = WGL_DEPTH_FLOAT_EXT;</div><div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;    }</div><div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;    __allegro_gl_valid_context = old_valid;</div><div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;</div><div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;    </div><div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;    <span class="comment">/* Get the pf attributes */</span></div><div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;    <span class="keywordflow">if</span> (__wglGetPixelFormatAttribivARB) {</div><div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;        ret = __wglGetPixelFormatAttribivARB(dc, fmt, 0, num_attribs,</div><div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;                                             attrib, value);</div><div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;    }</div><div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (__wglGetPixelFormatAttribivEXT) {</div><div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;        ret = __wglGetPixelFormatAttribivEXT(dc, fmt, 0, num_attribs,</div><div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;                                             attrib, value);</div><div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;    }</div><div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;        ret = 0;</div><div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;    }   </div><div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;</div><div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;    <span class="comment">/* wglGetPixelFormatAttrib() failed? Abort and revert to old path */</span></div><div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;    <span class="keywordflow">if</span> (!ret) {</div><div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;        log_win32_error(<span class="stringliteral">&quot;describe_pixel_format_new&quot;</span>,</div><div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;                        <span class="stringliteral">&quot;wglGetPixelFormatAttrib failed!&quot;</span>, GetLastError());</div><div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;        free(value);</div><div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;        <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;    }</div><div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;</div><div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;    <span class="comment">/* Convert to AllegroGL format for scoring */</span></div><div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;    result = !decode_pixel_format_attrib(&amp;dinfo, num_attribs, attrib, value,</div><div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;                                         desktop_depth);</div><div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;    free(value);</div><div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;</div><div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;    <span class="keywordflow">if</span> (result) {</div><div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;        print_pixel_format(&amp;dinfo); </div><div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;        score = __allegro_gl_score_config(fmt, &amp;dinfo);</div><div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;    }</div><div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;</div><div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;    <span class="keywordflow">if</span> (score &lt; 0) {</div><div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;        <span class="keywordflow">return</span> 0; <span class="comment">/* Reject non-compliant pixel formats */</span></div><div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;    }</div><div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;</div><div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;    <span class="keywordflow">if</span> (formats &amp;&amp; num_formats) {</div><div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;        formats[*num_formats].score  = score;</div><div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;        formats[*num_formats].format = fmt;</div><div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;        (*num_formats)++;</div><div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;    }</div><div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;</div><div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;    <span class="keywordflow">if</span> (pdinfo) {</div><div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;        *pdinfo = dinfo;</div><div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160;    }</div><div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;</div><div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;}</div><div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;</div><div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;</div><div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;</div><div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;<span class="comment">/* Returns the number of pixel formats we should investigate */</span></div><div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;<span class="keywordtype">int</span> get_num_pixel_formats(HDC dc, <span class="keywordtype">int</span> *new_pf_code) {</div><div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;    </div><div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;    <span class="comment">/* DescribePixelFormat() returns maximum pixel format index in the old</span></div><div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;<span class="comment">     * code. wglGetPixelFormatAttribivARB() does it in the new code.</span></div><div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;    <span class="keywordflow">if</span> (new_pf_code &amp;&amp; *new_pf_code) {</div><div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;        <span class="keywordtype">int</span> attrib[1];</div><div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;        <span class="keywordtype">int</span> value[1];</div><div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;        </div><div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;get_num_pixel_formats(): Attempting to use WGL_pf.\n&quot;</span>);</div><div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;        attrib[0] = WGL_NUMBER_PIXEL_FORMATS_ARB;</div><div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;        <span class="keywordflow">if</span> ((__wglGetPixelFormatAttribivARB</div><div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;          &amp;&amp; __wglGetPixelFormatAttribivARB(dc, 0, 0, 1, attrib, value)</div><div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;                                                                 == GL_FALSE)</div><div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;         || (__wglGetPixelFormatAttribivEXT</div><div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;          &amp;&amp; __wglGetPixelFormatAttribivEXT(dc, 0, 0, 1, attrib, value)</div><div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;                                                                 == GL_FALSE)) {</div><div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;            log_win32_note(<span class="stringliteral">&quot;get_num_pixel_formats&quot;</span>,</div><div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;                        <span class="stringliteral">&quot;WGL_ARB/EXT_pixel_format use failed!&quot;</span>, GetLastError());</div><div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;            *new_pf_code = 0;</div><div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;        }</div><div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;        <span class="keywordflow">else</span> {</div><div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;            <span class="keywordflow">return</span> value[0];</div><div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;        }</div><div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;    }</div><div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;</div><div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;    <span class="keywordflow">if</span> (!new_pf_code || !*new_pf_code) {</div><div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;        PIXELFORMATDESCRIPTOR pfd;</div><div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;        <span class="keywordtype">int</span> ret;</div><div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;        </div><div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;get_num_pixel_formats(): Using DescribePixelFormat.\n&quot;</span>);</div><div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;        ret = DescribePixelFormat(dc, 1, <span class="keyword">sizeof</span>(pfd), &amp;pfd);</div><div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;</div><div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;        <span class="keywordflow">if</span> (!ret) {</div><div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;            log_win32_error(<span class="stringliteral">&quot;get_num_pixel_formats&quot;</span>,</div><div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;                        <span class="stringliteral">&quot;DescribePixelFormat failed!&quot;</span>, GetLastError());</div><div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;        }</div><div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;        </div><div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;        <span class="keywordflow">return</span> ret;</div><div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;    }</div><div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;</div><div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;}</div><div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;</div><div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;</div><div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;</div><div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;<span class="comment">/* Pick the best matching pixel format */</span></div><div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> select_pixel_format(PIXELFORMATDESCRIPTOR * pfd)</div><div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;{</div><div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;    <span class="keywordtype">int</span> i;</div><div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;    <span class="keywordtype">int</span> result, maxindex;</div><div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;    <span class="keywordtype">int</span> desktop_depth;</div><div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;</div><div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;    HWND testwnd = NULL;</div><div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;    HDC testdc   = NULL;</div><div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;    HGLRC testrc = NULL;</div><div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;    </div><div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;    format_t *format = NULL;</div><div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;    <span class="keywordtype">int</span> num_formats = 0;</div><div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;    <span class="keywordtype">int</span> new_pf_code = 0;</div><div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;</div><div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;    </div><div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;    __allegro_gl_reset_scorer();</div><div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;</div><div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;    <span class="comment">/* Read again the desktop depth */</span></div><div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;    desktop_depth = desktop_color_depth();</div><div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160; </div><div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;    <span class="keywordflow">if</span> (register_test_window() &lt; 0) {</div><div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;    }</div><div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;</div><div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;    testwnd = create_test_window();</div><div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;</div><div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;    <span class="keywordflow">if</span> (!testwnd) {</div><div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;        <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;    }</div><div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;</div><div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;    testdc = GetDC(testwnd);</div><div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;</div><div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;    <span class="comment">/* Check if we can support new pixel format code */</span></div><div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): Trying to set up temporary RC\n&quot;</span>);</div><div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;    {</div><div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;        HDC old_dc = __allegro_gl_hdc;</div><div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;        <span class="keywordtype">int</span> old_valid = __allegro_gl_valid_context;</div><div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;        PIXELFORMATDESCRIPTOR pfd;</div><div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;        <span class="keywordtype">int</span> pf;</div><div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;        </div><div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;        new_pf_code = 0;</div><div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;        </div><div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;        <span class="comment">/* We need to create a dummy window with a pixel format to get the</span></div><div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160;<span class="comment">         * list of valid PFDs</span></div><div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160;<span class="comment">         */</span></div><div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;        memset(&amp;pfd, 0, <span class="keyword">sizeof</span>(pfd));</div><div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160;        pfd.nSize = <span class="keyword">sizeof</span>(pfd);</div><div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160;        pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL</div><div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;                    | PFD_DOUBLEBUFFER_DONTCARE | PFD_STEREO_DONTCARE;</div><div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;        pfd.iPixelType = PFD_TYPE_RGBA;</div><div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;        pfd.iLayerType = PFD_MAIN_PLANE;</div><div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160;        pfd.cColorBits = 32;</div><div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;</div><div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): ChoosePixelFormat()\n&quot;</span>);</div><div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;        pf = ChoosePixelFormat(testdc, &amp;pfd);</div><div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;</div><div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;        <span class="keywordflow">if</span> (!pf) {</div><div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160;            log_win32_warning(<span class="stringliteral">&quot;select_pixel_format&quot;</span>,</div><div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160;                        <span class="stringliteral">&quot;Unable to chose a temporary pixel format!&quot;</span>,</div><div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160;                        GetLastError());</div><div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;            <span class="keywordflow">goto</span> fail_pf;</div><div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;        }</div><div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;</div><div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160;        <span class="comment">/* Set up a GL context there */</span></div><div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): SetPixelFormat()\n&quot;</span>);</div><div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160;        memset(&amp;pfd, 0, <span class="keyword">sizeof</span>(pfd));</div><div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;        <span class="keywordflow">if</span> (!SetPixelFormat(testdc, pf, &amp;pfd)) {</div><div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;            log_win32_warning(<span class="stringliteral">&quot;select_pixel_format&quot;</span>,</div><div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;                        <span class="stringliteral">&quot;Unable to set a temporary pixel format!&quot;</span>,</div><div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;                        GetLastError());</div><div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160;            <span class="keywordflow">goto</span> fail_pf;</div><div class="line"><a name="l00891"></a><span class="lineno">  891</span>&#160;        }</div><div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;</div><div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): CreateContext()\n&quot;</span>);</div><div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160;        testrc = wglCreateContext(testdc);</div><div class="line"><a name="l00895"></a><span class="lineno">  895</span>&#160;</div><div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160;        <span class="keywordflow">if</span> (!testrc) {</div><div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160;            log_win32_warning(<span class="stringliteral">&quot;select_pixel_format&quot;</span>,</div><div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;                        <span class="stringliteral">&quot;Unable to create a render context!&quot;</span>,</div><div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160;                        GetLastError());</div><div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160;            <span class="keywordflow">goto</span> fail_pf;</div><div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160;        }</div><div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;        </div><div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): MakeCurrent()\n&quot;</span>);</div><div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160;        <span class="keywordflow">if</span> (!wglMakeCurrent(testdc, testrc)) {</div><div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;            log_win32_warning(<span class="stringliteral">&quot;select_pixel_format&quot;</span>,</div><div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;                        <span class="stringliteral">&quot;Unable to set the render context as current!&quot;</span>,</div><div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;                        GetLastError());</div><div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160;            <span class="keywordflow">goto</span> fail_pf;</div><div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;        }</div><div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160;</div><div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;        __allegro_gl_hdc = testdc;</div><div class="line"><a name="l00912"></a><span class="lineno">  912</span>&#160;        __allegro_gl_valid_context = TRUE;</div><div class="line"><a name="l00913"></a><span class="lineno">  913</span>&#160;</div><div class="line"><a name="l00914"></a><span class="lineno">  914</span>&#160;</div><div class="line"><a name="l00915"></a><span class="lineno">  915</span>&#160;        <span class="comment">/* This is a workaround for a bug in old NVidia drivers. We need to</span></div><div class="line"><a name="l00916"></a><span class="lineno">  916</span>&#160;<span class="comment">         * call wglGetExtensionsStringARB() for it to properly initialize.</span></div><div class="line"><a name="l00917"></a><span class="lineno">  917</span>&#160;<span class="comment">         */</span></div><div class="line"><a name="l00918"></a><span class="lineno">  918</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): GetExtensionsStringARB()\n&quot;</span>);</div><div class="line"><a name="l00919"></a><span class="lineno">  919</span>&#160;        <span class="keywordflow">if</span> (strstr((AL_CONST <span class="keywordtype">char</span>*)glGetString(GL_VENDOR), <span class="stringliteral">&quot;NVIDIA&quot;</span>)) {</div><div class="line"><a name="l00920"></a><span class="lineno">  920</span>&#160;            AGL_GetExtensionsStringARB_t __wglGetExtensionsStringARB = NULL;</div><div class="line"><a name="l00921"></a><span class="lineno">  921</span>&#160;            </div><div class="line"><a name="l00922"></a><span class="lineno">  922</span>&#160;            __wglGetExtensionsStringARB = (AGL_GetExtensionsStringARB_t)</div><div class="line"><a name="l00923"></a><span class="lineno">  923</span>&#160;                           wglGetProcAddress(<span class="stringliteral">&quot;wglGetExtensionsStringARB&quot;</span>);</div><div class="line"><a name="l00924"></a><span class="lineno">  924</span>&#160;</div><div class="line"><a name="l00925"></a><span class="lineno">  925</span>&#160;            TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): Querying for &quot;</span></div><div class="line"><a name="l00926"></a><span class="lineno">  926</span>&#160;                  <span class="stringliteral">&quot;WGL_ARB_extension_string\n&quot;</span>);</div><div class="line"><a name="l00927"></a><span class="lineno">  927</span>&#160;            </div><div class="line"><a name="l00928"></a><span class="lineno">  928</span>&#160;            <span class="keywordflow">if</span> (__wglGetExtensionsStringARB) {</div><div class="line"><a name="l00929"></a><span class="lineno">  929</span>&#160;                TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): Calling &quot;</span></div><div class="line"><a name="l00930"></a><span class="lineno">  930</span>&#160;                      <span class="stringliteral">&quot;__wglGetExtensionsStringARB\n&quot;</span>);</div><div class="line"><a name="l00931"></a><span class="lineno">  931</span>&#160;                __wglGetExtensionsStringARB(testdc);</div><div class="line"><a name="l00932"></a><span class="lineno">  932</span>&#160;            }</div><div class="line"><a name="l00933"></a><span class="lineno">  933</span>&#160;        }</div><div class="line"><a name="l00934"></a><span class="lineno">  934</span>&#160;</div><div class="line"><a name="l00935"></a><span class="lineno">  935</span>&#160;        </div><div class="line"><a name="l00936"></a><span class="lineno">  936</span>&#160;        <span class="comment">/* Check that we support ARB/EXT_pixel_format */</span></div><div class="line"><a name="l00937"></a><span class="lineno">  937</span>&#160;        <span class="keywordflow">if</span> (!<a class="code" href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a">allegro_gl_is_extension_supported</a>(<span class="stringliteral">&quot;WGL_ARB_pixel_format&quot;</span>)</div><div class="line"><a name="l00938"></a><span class="lineno">  938</span>&#160;         &amp;&amp; !<a class="code" href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a">allegro_gl_is_extension_supported</a>(<span class="stringliteral">&quot;WGL_EXT_pixel_format&quot;</span>)) {</div><div class="line"><a name="l00939"></a><span class="lineno">  939</span>&#160;            TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): WGL_ARB/EXT_pf unsupported.\n&quot;</span>);</div><div class="line"><a name="l00940"></a><span class="lineno">  940</span>&#160;            <span class="keywordflow">goto</span> fail_pf;</div><div class="line"><a name="l00941"></a><span class="lineno">  941</span>&#160;        }</div><div class="line"><a name="l00942"></a><span class="lineno">  942</span>&#160;        </div><div class="line"><a name="l00943"></a><span class="lineno">  943</span>&#160;        <span class="comment">/* Load the ARB_p_f symbol - Note, we shouldn&#39;t use the AGL extension</span></div><div class="line"><a name="l00944"></a><span class="lineno">  944</span>&#160;<span class="comment">         * mechanism here, because AGL hasn&#39;t been initialized yet!</span></div><div class="line"><a name="l00945"></a><span class="lineno">  945</span>&#160;<span class="comment">         */</span></div><div class="line"><a name="l00946"></a><span class="lineno">  946</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): GetProcAddress()\n&quot;</span>);        </div><div class="line"><a name="l00947"></a><span class="lineno">  947</span>&#160;        __wglGetPixelFormatAttribivARB = (AGL_GetPixelFormatAttribivARB_t)</div><div class="line"><a name="l00948"></a><span class="lineno">  948</span>&#160;                       wglGetProcAddress(<span class="stringliteral">&quot;wglGetPixelFormatAttribivARB&quot;</span>);</div><div class="line"><a name="l00949"></a><span class="lineno">  949</span>&#160;        __wglGetPixelFormatAttribivEXT = (AGL_GetPixelFormatAttribivEXT_t)</div><div class="line"><a name="l00950"></a><span class="lineno">  950</span>&#160;                       wglGetProcAddress(<span class="stringliteral">&quot;wglGetPixelFormatAttribivEXT&quot;</span>);</div><div class="line"><a name="l00951"></a><span class="lineno">  951</span>&#160;</div><div class="line"><a name="l00952"></a><span class="lineno">  952</span>&#160;        <span class="keywordflow">if</span> (!__wglGetPixelFormatAttribivARB</div><div class="line"><a name="l00953"></a><span class="lineno">  953</span>&#160;         &amp;&amp; !__wglGetPixelFormatAttribivEXT) {</div><div class="line"><a name="l00954"></a><span class="lineno">  954</span>&#160;            TRACE(PREFIX_E <span class="stringliteral">&quot;select_pixel_format(): WGL_ARB/EXT_pf not &quot;</span></div><div class="line"><a name="l00955"></a><span class="lineno">  955</span>&#160;                  <span class="stringliteral">&quot;correctly supported!\n&quot;</span>);</div><div class="line"><a name="l00956"></a><span class="lineno">  956</span>&#160;            <span class="keywordflow">goto</span> fail_pf;</div><div class="line"><a name="l00957"></a><span class="lineno">  957</span>&#160;        }</div><div class="line"><a name="l00958"></a><span class="lineno">  958</span>&#160;</div><div class="line"><a name="l00959"></a><span class="lineno">  959</span>&#160;        new_pf_code = 1;</div><div class="line"><a name="l00960"></a><span class="lineno">  960</span>&#160;        <span class="keywordflow">goto</span> exit_pf;</div><div class="line"><a name="l00961"></a><span class="lineno">  961</span>&#160;</div><div class="line"><a name="l00962"></a><span class="lineno">  962</span>&#160;fail_pf:</div><div class="line"><a name="l00963"></a><span class="lineno">  963</span>&#160;        wglMakeCurrent(NULL, NULL);</div><div class="line"><a name="l00964"></a><span class="lineno">  964</span>&#160;        <span class="keywordflow">if</span> (testrc) {</div><div class="line"><a name="l00965"></a><span class="lineno">  965</span>&#160;            wglDeleteContext(testrc);</div><div class="line"><a name="l00966"></a><span class="lineno">  966</span>&#160;        }</div><div class="line"><a name="l00967"></a><span class="lineno">  967</span>&#160;        testrc = NULL;</div><div class="line"><a name="l00968"></a><span class="lineno">  968</span>&#160;</div><div class="line"><a name="l00969"></a><span class="lineno">  969</span>&#160;        __wglGetPixelFormatAttribivARB = NULL;</div><div class="line"><a name="l00970"></a><span class="lineno">  970</span>&#160;        __wglGetPixelFormatAttribivEXT = NULL;</div><div class="line"><a name="l00971"></a><span class="lineno">  971</span>&#160;exit_pf:</div><div class="line"><a name="l00972"></a><span class="lineno">  972</span>&#160;        __allegro_gl_hdc = old_dc;</div><div class="line"><a name="l00973"></a><span class="lineno">  973</span>&#160;        __allegro_gl_valid_context = old_valid;</div><div class="line"><a name="l00974"></a><span class="lineno">  974</span>&#160;    }</div><div class="line"><a name="l00975"></a><span class="lineno">  975</span>&#160;</div><div class="line"><a name="l00976"></a><span class="lineno">  976</span>&#160;    maxindex = get_num_pixel_formats(testdc, &amp;new_pf_code);</div><div class="line"><a name="l00977"></a><span class="lineno">  977</span>&#160;</div><div class="line"><a name="l00978"></a><span class="lineno">  978</span>&#160;    <span class="comment">/* Check if using the new pf code failed. Likely due to driver bug.</span></div><div class="line"><a name="l00979"></a><span class="lineno">  979</span>&#160;<span class="comment">     * maxindex is still valid though, so we can continue.</span></div><div class="line"><a name="l00980"></a><span class="lineno">  980</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l00981"></a><span class="lineno">  981</span>&#160;    <span class="keywordflow">if</span> (!new_pf_code &amp;&amp; testrc) {</div><div class="line"><a name="l00982"></a><span class="lineno">  982</span>&#160;        TRACE(PREFIX_W <span class="stringliteral">&quot;select_pixel_format(): WGL_ARB_pf call failed - &quot;</span></div><div class="line"><a name="l00983"></a><span class="lineno">  983</span>&#160;              <span class="stringliteral">&quot;reverted to plain old WGL.\n&quot;</span>);</div><div class="line"><a name="l00984"></a><span class="lineno">  984</span>&#160;        wglMakeCurrent(NULL, NULL);</div><div class="line"><a name="l00985"></a><span class="lineno">  985</span>&#160;        wglDeleteContext(testrc);</div><div class="line"><a name="l00986"></a><span class="lineno">  986</span>&#160;        testrc  = NULL;</div><div class="line"><a name="l00987"></a><span class="lineno">  987</span>&#160;        __wglGetPixelFormatAttribivARB = NULL;</div><div class="line"><a name="l00988"></a><span class="lineno">  988</span>&#160;        __wglGetPixelFormatAttribivEXT = NULL;</div><div class="line"><a name="l00989"></a><span class="lineno">  989</span>&#160;    }</div><div class="line"><a name="l00990"></a><span class="lineno">  990</span>&#160;</div><div class="line"><a name="l00991"></a><span class="lineno">  991</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): %i formats.\n&quot;</span>, maxindex);</div><div class="line"><a name="l00992"></a><span class="lineno">  992</span>&#160;</div><div class="line"><a name="l00993"></a><span class="lineno">  993</span>&#160;    <span class="keywordflow">if</span> (maxindex &lt; 1) {</div><div class="line"><a name="l00994"></a><span class="lineno">  994</span>&#160;        TRACE(PREFIX_E <span class="stringliteral">&quot;select_pixel_format(): Didn&#39;t find any pixel &quot;</span></div><div class="line"><a name="l00995"></a><span class="lineno">  995</span>&#160;              <span class="stringliteral">&quot;formats at all!\n&quot;</span>);</div><div class="line"><a name="l00996"></a><span class="lineno">  996</span>&#160;        <span class="keywordflow">goto</span> bail;</div><div class="line"><a name="l00997"></a><span class="lineno">  997</span>&#160;    }</div><div class="line"><a name="l00998"></a><span class="lineno">  998</span>&#160;    </div><div class="line"><a name="l00999"></a><span class="lineno">  999</span>&#160;    format = malloc((maxindex + 1) * <span class="keyword">sizeof</span>(format_t));</div><div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160;    </div><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160;    <span class="keywordflow">if</span> (!format) {</div><div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160;        TRACE(PREFIX_E <span class="stringliteral">&quot;select_pixel_format(): Unable to allocate memory for &quot;</span></div><div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160;              <span class="stringliteral">&quot;pixel format scores!\n&quot;</span>);</div><div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160;        <span class="keywordflow">goto</span> bail;</div><div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160;    }</div><div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160;</div><div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160;    <span class="comment">/* First, pixel formats are sorted by decreasing order */</span></div><div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): Testing pixel formats:\n&quot;</span>);</div><div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160;    <span class="keywordflow">for</span> (i = 1; i &lt;= maxindex; i++) {</div><div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160;</div><div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160;        <span class="keywordtype">int</span> use_old = !new_pf_code;</div><div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160;        </div><div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;Format %i:\n&quot;</span>, i);</div><div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;        </div><div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160;        <span class="keywordflow">if</span> (new_pf_code) {</div><div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160;            <span class="keywordflow">if</span> (describe_pixel_format_new(testdc, i, desktop_depth,</div><div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160;                                          format, &amp;num_formats, NULL) &lt; 0) {</div><div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160;                TRACE(PREFIX_W <span class="stringliteral">&quot;select_pixel_format(): Wasn&#39;t able to use &quot;</span></div><div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160;                      <span class="stringliteral">&quot;WGL_PixelFormat - reverting to old WGL code.\n&quot;</span>);</div><div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160;                use_old = 1;</div><div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160;            }</div><div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>&#160;        }</div><div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160;</div><div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160;        <span class="keywordflow">if</span> (use_old) {</div><div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160;            <span class="keywordflow">if</span> (describe_pixel_format_old(testdc, i, desktop_depth,</div><div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160;                                      format, &amp;num_formats, NULL) &lt; 0) {</div><div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160;                TRACE(PREFIX_W <span class="stringliteral">&quot;select_pixel_format(): Unable to rely on &quot;</span></div><div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160;                      <span class="stringliteral">&quot;unextended WGL to describe this pixelformat.\n&quot;</span>);</div><div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160;            }</div><div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160;        }</div><div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160;    }</div><div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160;</div><div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160;    <span class="keywordflow">if</span> (new_pf_code) {</div><div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160;        wglMakeCurrent(NULL, NULL);</div><div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160;        wglDeleteContext(testrc);</div><div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160;        testrc = NULL;</div><div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160;    }</div><div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160;    <span class="keywordflow">if</span> (testwnd) {</div><div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;        ReleaseDC(testwnd, testdc);</div><div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160;        testdc = NULL;</div><div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160;        DestroyWindow(testwnd);</div><div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;        testwnd = NULL;</div><div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160;    }</div><div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160;</div><div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;    <span class="keywordflow">if</span> (num_formats &lt; 1) {</div><div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160;        TRACE(PREFIX_E <span class="stringliteral">&quot;select_pixel_format(): Didn&#39;t find any available &quot;</span></div><div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160;              <span class="stringliteral">&quot;pixel formats!\n&quot;</span>);</div><div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>&#160;        <span class="keywordflow">goto</span> bail;</div><div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160;    }</div><div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160;</div><div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160;    qsort(format, num_formats, <span class="keyword">sizeof</span>(format_t), select_pixel_format_sorter);</div><div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160;</div><div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160;</div><div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160;    <span class="comment">/* Sorted pixel formats are tested until one of them succeeds to</span></div><div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160;<span class="comment">     * make a GL context current */</span></div><div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160;    <span class="keywordflow">for</span> (i = 0; i &lt; num_formats ; i++) {</div><div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160;        HGLRC rc;</div><div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160;</div><div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160;        <span class="comment">/* Recreate our test windows */</span></div><div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160;        testwnd = create_test_window();</div><div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160;        testdc = GetDC(testwnd);</div><div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160;        </div><div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160;        <span class="keywordflow">if</span> (SetPixelFormat(testdc, format[i].format, pfd)) {</div><div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160;            rc = wglCreateContext(testdc);</div><div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;            <span class="keywordflow">if</span> (!rc) {</div><div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160;                TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): Unable to create RC!\n&quot;</span>);</div><div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160;            }</div><div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;            <span class="keywordflow">else</span> {</div><div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;                <span class="keywordflow">if</span> (wglMakeCurrent(testdc, rc)) {</div><div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160;                    wglMakeCurrent(NULL, NULL);</div><div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160;                    wglDeleteContext(rc);</div><div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160;                    rc = NULL;</div><div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;</div><div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160;                    TRACE(PREFIX_I <span class="stringliteral">&quot;select_pixel_format(): Best config is: %i&quot;</span></div><div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160;                          <span class="stringliteral">&quot;\n&quot;</span>, format[i].format);</div><div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160;</div><div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;                    <span class="comment">/* XXX &lt;rohannessian&gt; DescribePixelFormat may fail on </span></div><div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160;<span class="comment">                     * extended pixel format (WGL_ARB_p_f)</span></div><div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160;<span class="comment">                     */</span></div><div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;                    <span class="keywordflow">if</span> (!DescribePixelFormat(testdc, format[i].format,</div><div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160;                                        <span class="keyword">sizeof</span> *pfd, pfd)) {</div><div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160;                        TRACE(PREFIX_E <span class="stringliteral">&quot;Cannot describe this pixel format\n&quot;</span>);</div><div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>&#160;                        ReleaseDC(testwnd, testdc);</div><div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160;                        DestroyWindow(testwnd);</div><div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160;                        testdc = NULL;</div><div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;                        testwnd = NULL;</div><div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160;                        <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160;                    }</div><div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160;</div><div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160;                    ReleaseDC(testwnd, testdc);</div><div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160;                    DestroyWindow(testwnd);</div><div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160;</div><div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160;                    result = format[i].format;</div><div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;                    </div><div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160;                    free(format);</div><div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160;                    <span class="keywordflow">return</span> result;</div><div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160;                }</div><div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160;                <span class="keywordflow">else</span> {</div><div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160;                    wglMakeCurrent(NULL, NULL);</div><div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160;                    wglDeleteContext(rc);</div><div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160;                    rc = NULL;</div><div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160;                    log_win32_warning(<span class="stringliteral">&quot;select_pixel_format&quot;</span>,</div><div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160;                            <span class="stringliteral">&quot;Couldn&#39;t make the temporary render context &quot;</span></div><div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;                            <span class="stringliteral">&quot;current for the this pixel format.&quot;</span>,</div><div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160;                            GetLastError());</div><div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160;                }</div><div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160;            }</div><div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160;        }</div><div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160;        <span class="keywordflow">else</span> {</div><div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160;            log_win32_note(<span class="stringliteral">&quot;select_pixel_format&quot;</span>,</div><div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160;                        <span class="stringliteral">&quot;Unable to set pixel format!&quot;</span>, GetLastError());</div><div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160;        }</div><div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;        </div><div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160;        ReleaseDC(testwnd, testdc);</div><div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160;        DestroyWindow(testwnd);</div><div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160;        testdc = NULL;</div><div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160;        testwnd = NULL;</div><div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160;    }</div><div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160;</div><div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160;    TRACE(PREFIX_E <span class="stringliteral">&quot;select_pixel_format(): All modes have failed...\n&quot;</span>);</div><div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;bail:</div><div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160;    <span class="keywordflow">if</span> (format) {</div><div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>&#160;        free(format);</div><div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160;    }</div><div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160;    <span class="keywordflow">if</span> (new_pf_code) {</div><div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160;        wglMakeCurrent(NULL, NULL);</div><div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160;        <span class="keywordflow">if</span> (testrc) {</div><div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>&#160;            wglDeleteContext(testrc);</div><div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>&#160;        }</div><div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>&#160;    }</div><div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>&#160;    <span class="keywordflow">if</span> (testwnd) {</div><div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>&#160;        ReleaseDC(testwnd, testdc);</div><div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>&#160;        DestroyWindow(testwnd);</div><div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>&#160;    }</div><div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>&#160;    </div><div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>&#160;    <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>&#160;}</div><div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>&#160;</div><div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>&#160;</div><div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>&#160;</div><div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> allegrogl_init_window(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, DWORD style, DWORD exstyle)</div><div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>&#160;{</div><div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>&#160;    RECT rect;</div><div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>&#160;</div><div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>&#160;<span class="preprocessor">#define req __allegro_gl_required_settings</span></div><div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>&#160;<span class="preprocessor">#define sug __allegro_gl_suggested_settings</span></div><div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>&#160;</div><div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>&#160;    <span class="keywordtype">int</span> x = 32, y = 32;</div><div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>&#160;    </div><div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>&#160;    <span class="keywordflow">if</span> (req &amp; <a class="code" href="group__settings.html#gafea8132efd1fcac7a7f997ef0fe34cfa">AGL_WINDOW_X</a> || sug &amp; <a class="code" href="group__settings.html#gafea8132efd1fcac7a7f997ef0fe34cfa">AGL_WINDOW_X</a>)</div><div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>&#160;        x = allegro_gl_display_info.x;</div><div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>&#160;    <span class="keywordflow">if</span> (req &amp; <a class="code" href="group__settings.html#ga80b7ef911d06ddee6d94d528cc6d914a">AGL_WINDOW_Y</a> || sug &amp; <a class="code" href="group__settings.html#ga80b7ef911d06ddee6d94d528cc6d914a">AGL_WINDOW_Y</a>)</div><div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>&#160;        y = allegro_gl_display_info.y;</div><div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>&#160;</div><div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>&#160;<span class="preprocessor">#undef req</span></div><div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>&#160;<span class="preprocessor">#undef sug</span></div><div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>&#160;    </div><div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>&#160;    <span class="keywordflow">if</span> (!fullscreen) {</div><div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>&#160;        rect.left = x;</div><div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>&#160;        rect.right = x + w;</div><div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>&#160;        rect.top = y;</div><div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>&#160;        rect.bottom = y + h;</div><div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>&#160;    }</div><div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>&#160;        rect.left = 0;</div><div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>&#160;        rect.right = w;</div><div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>&#160;        rect.top  = 0;</div><div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>&#160;        rect.bottom = h;</div><div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>&#160;    }</div><div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>&#160;</div><div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>&#160;    <span class="comment">/* save original Allegro styles */</span></div><div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>&#160;    style_saved = GetWindowLong(wnd, GWL_STYLE);</div><div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>&#160;    exstyle_saved = GetWindowLong(wnd, GWL_EXSTYLE);</div><div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>&#160;</div><div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>&#160;    <span class="comment">/* set custom AllegroGL style */</span></div><div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>&#160;    SetWindowLong(wnd, GWL_STYLE, style);</div><div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>&#160;    SetWindowLong(wnd, GWL_EXSTYLE, exstyle);</div><div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>&#160;</div><div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>&#160;    <span class="keywordflow">if</span> (!fullscreen) {</div><div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>&#160;        AdjustWindowRectEx(&amp;rect, style, FALSE, exstyle);</div><div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>&#160;    }</div><div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>&#160;</div><div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>&#160;    <span class="comment">/* make the changes visible */</span></div><div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>&#160;    SetWindowPos(wnd, 0, rect.left, rect.top,</div><div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>&#160;        rect.right - rect.left, rect.bottom - rect.top,</div><div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>&#160;        SWP_NOZORDER | SWP_FRAMECHANGED);</div><div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>&#160;    </div><div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>&#160;    <span class="keywordflow">return</span>;</div><div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>&#160;}</div><div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>&#160;</div><div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>&#160;</div><div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>&#160;</div><div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>&#160;<span class="keyword">static</span> BITMAP *allegro_gl_create_screen (GFX_DRIVER *drv, <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h,</div><div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>&#160;                                         <span class="keywordtype">int</span> depth)</div><div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>&#160;{</div><div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>&#160;    BITMAP *bmp;</div><div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>&#160;    <span class="keywordtype">int</span> is_linear = drv-&gt;linear;</div><div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>&#160;</div><div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>&#160;    drv-&gt;linear = 1;</div><div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>&#160;    bmp = _make_bitmap (w, h, 0, drv, depth, 0);</div><div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>&#160;    </div><div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>&#160;    <span class="keywordflow">if</span> (!bmp) {</div><div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>&#160;        <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>&#160;    }</div><div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>&#160;</div><div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>&#160;    bmp-&gt;id = BMP_ID_VIDEO | 1000;</div><div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>&#160;    drv-&gt;linear = is_linear;</div><div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>&#160;</div><div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>&#160;    drv-&gt;w = w;</div><div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>&#160;    drv-&gt;h = h;</div><div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>&#160;</div><div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>&#160;    <span class="keywordflow">return</span> bmp;</div><div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>&#160;}</div><div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>&#160;</div><div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>&#160;</div><div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>&#160;<span class="keyword">static</span> LRESULT CALLBACK dummy_wnd_proc(HWND wnd, UINT message, WPARAM wparam, LPARAM lparam)</div><div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>&#160;{</div><div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>&#160;    <span class="keywordflow">return</span> DefWindowProc(wnd, message, wparam, lparam);</div><div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>&#160;}</div><div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>&#160;</div><div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>&#160;<span class="keyword">static</span> HWND dummy_wnd;</div><div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>&#160;</div><div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> dummy_window(<span class="keywordtype">void</span>)</div><div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>&#160;{</div><div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>&#160;    WNDCLASS wnd_class;</div><div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>&#160;</div><div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>&#160;    wnd_class.style = CS_HREDRAW | CS_VREDRAW;</div><div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>&#160;    wnd_class.lpfnWndProc = dummy_wnd_proc;</div><div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>&#160;    wnd_class.cbClsExtra = 0;</div><div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>&#160;    wnd_class.cbWndExtra = 0;</div><div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>&#160;    wnd_class.hInstance = GetModuleHandle(NULL);</div><div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>&#160;    wnd_class.hIcon = LoadIcon(NULL, IDI_APPLICATION);</div><div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>&#160;    wnd_class.hCursor = LoadCursor(NULL, IDC_ARROW);</div><div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>&#160;    wnd_class.hbrBackground = NULL;</div><div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>&#160;    wnd_class.lpszMenuName = NULL;</div><div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>&#160;    wnd_class.lpszClassName = <span class="stringliteral">&quot;allegro focus&quot;</span>;</div><div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>&#160;</div><div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>&#160;    RegisterClass(&amp;wnd_class);</div><div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>&#160;</div><div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>&#160;    dummy_wnd = CreateWindow(<span class="stringliteral">&quot;allegro focus&quot;</span>, <span class="stringliteral">&quot;Allegro&quot;</span>, WS_POPUP | WS_VISIBLE,</div><div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>&#160;            0, 0, 200, 200,</div><div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>&#160;            NULL, NULL, GetModuleHandle(NULL), NULL);</div><div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>&#160;</div><div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>&#160;    ShowWindow(dummy_wnd, SW_SHOWNORMAL);</div><div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>&#160;    SetForegroundWindow(dummy_wnd);</div><div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>&#160;}</div><div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>&#160;</div><div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> remove_dummy_window(<span class="keywordtype">void</span>)</div><div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>&#160;{</div><div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>&#160;    DestroyWindow(dummy_wnd);</div><div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>&#160;    UnregisterClass(<span class="stringliteral">&quot;allegro focus&quot;</span>, GetModuleHandle(NULL));</div><div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>&#160;}</div><div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>&#160;</div><div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>&#160;</div><div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>&#160;<span class="keyword">static</span> BITMAP *allegro_gl_win_init(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> v_w, <span class="keywordtype">int</span> v_h)</div><div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>&#160;{</div><div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>&#160;    <span class="keyword">static</span> <span class="keywordtype">int</span> first_time = 1;</div><div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>&#160;    </div><div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>&#160;    DWORD style=0, exstyle=0;</div><div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>&#160;    <span class="keywordtype">int</span> refresh_rate = _refresh_rate_request;</div><div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>&#160;    <span class="keywordtype">int</span> desktop_depth;</div><div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>&#160;    <span class="keywordtype">int</span> pf=0;</div><div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>&#160;</div><div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>&#160;    new_w = w;</div><div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>&#160;    new_h = h;</div><div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>&#160;</div><div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>&#160;    <span class="comment">/* virtual screen are not supported */</span></div><div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>&#160;    <span class="keywordflow">if</span> ((v_w != 0 &amp;&amp; v_w != w) || (v_h != 0 &amp;&amp; v_h != h)) {</div><div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>&#160;        TRACE(PREFIX_E <span class="stringliteral">&quot;win_init(): Virtual screens are not supported in &quot;</span></div><div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>&#160;              <span class="stringliteral">&quot;AllegroGL!\n&quot;</span>);</div><div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>&#160;        <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>&#160;    }</div><div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>&#160;        </div><div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>&#160;    <span class="comment">/* Fill in missing color depth info */</span></div><div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>&#160;    __allegro_gl_fill_in_info();</div><div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>&#160;</div><div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>&#160;    <span class="comment">/* Be sure the current desktop color depth is at least 15bpp */</span></div><div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>&#160;    <span class="comment">/* We may want to change this, so try to set a better depth, or</span></div><div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>&#160;<span class="comment">       to at least report an error somehow */</span></div><div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>&#160;    desktop_depth = desktop_color_depth();</div><div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>&#160;</div><div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>&#160;    <span class="keywordflow">if</span> (desktop_depth &lt; 15)</div><div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>&#160;        <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>&#160;</div><div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): Requested color depth: %i  &quot;</span></div><div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>&#160;          <span class="stringliteral">&quot;Desktop color depth: %i\n&quot;</span>, allegro_gl_display_info.colour_depth,</div><div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>&#160;          desktop_depth);</div><div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>&#160;</div><div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>&#160;        <span class="comment">/* In the moment the main window is destroyed, Allegro loses focus, and</span></div><div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>&#160;<span class="comment">         * focus can only be returned by actual user input under Windows XP. So</span></div><div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>&#160;<span class="comment">         * we need to create a dummy window which retains focus for us, until</span></div><div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>&#160;<span class="comment">         * the new window is up.</span></div><div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>&#160;<span class="comment">         */</span></div><div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>&#160;        <span class="keywordflow">if</span> (fullscreen) dummy_window();</div><div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>&#160;</div><div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>&#160;    <span class="comment">/* Need to set the w and h driver members at this point to avoid assertion</span></div><div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>&#160;<span class="comment">     * failure in set_mouse_range() when win_set_window() is called.</span></div><div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>&#160;    <span class="keywordflow">if</span> (fullscreen) {</div><div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>&#160;        gfx_allegro_gl_fullscreen.w = w;</div><div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>&#160;        gfx_allegro_gl_fullscreen.h = h;</div><div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>&#160;    }</div><div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>&#160;        gfx_allegro_gl_windowed.w = w;</div><div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>&#160;        gfx_allegro_gl_windowed.h = h;</div><div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>&#160;    }</div><div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>&#160;</div><div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>&#160;    <span class="comment">/* request a fresh new window from Allegro... */</span></div><div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>&#160;    <span class="comment">/* Set a NULL window to get Allegro to generate a new HWND. This is needed</span></div><div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>&#160;<span class="comment">     * because we can only set the pixel format once per window. Thus, calling</span></div><div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>&#160;<span class="comment">     * set_gfx_mode() multiple times will fail without this code.</span></div><div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>&#160;    <span class="keywordflow">if</span> (!first_time) {</div><div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>&#160;        win_set_window(NULL);</div><div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>&#160;    }</div><div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>&#160;    first_time = 0;</div><div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>&#160;</div><div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>&#160;    <span class="comment">/* ...and retrieve its handle */</span></div><div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>&#160;    wnd = win_get_window();</div><div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>&#160;    <span class="keywordflow">if</span> (!wnd)</div><div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>&#160;        <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>&#160;</div><div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>&#160;    <span class="comment">/* set up the AllegroGL window */</span></div><div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>&#160;    <span class="keywordflow">if</span> (fullscreen) {</div><div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>&#160;        style = WS_POPUP | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;</div><div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>&#160;        exstyle = WS_EX_APPWINDOW | WS_EX_TOPMOST;</div><div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>&#160;    }</div><div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>&#160;        style = WS_SYSMENU | WS_CAPTION | WS_MINIMIZEBOX | WS_CLIPCHILDREN</div><div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>&#160;              | WS_CLIPSIBLINGS;</div><div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>&#160;        exstyle = WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;</div><div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>&#160;    }</div><div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>&#160;</div><div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): Setting up window.\n&quot;</span>);</div><div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>&#160;    allegrogl_init_window(w, h, style, exstyle);</div><div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>&#160;</div><div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>&#160;    __allegro_gl_hdc = GetDC(wnd); <span class="comment">/* get the device context of our window */</span></div><div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>&#160;    <span class="keywordflow">if</span> (!__allegro_gl_hdc) {</div><div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>&#160;        <span class="keywordflow">goto</span> Error;</div><div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>&#160;    }</div><div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>&#160;</div><div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): Driver selected fullscreen: %s\n&quot;</span>,</div><div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>&#160;          fullscreen ? <span class="stringliteral">&quot;Yes&quot;</span> : <span class="stringliteral">&quot;No&quot;</span>);</div><div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>&#160;</div><div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>&#160;    <span class="keywordflow">if</span> (fullscreen)</div><div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>&#160;    {</div><div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>&#160;        DEVMODE dm;</div><div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>&#160;        DEVMODE fallback_dm;</div><div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>&#160;        <span class="keywordtype">int</span> fallback_dm_valid = 0;</div><div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>&#160;</div><div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>&#160;        <span class="keywordtype">int</span> bpp_to_check[] = {16, 32, 24, 15, 0};</div><div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>&#160;        <span class="keywordtype">int</span> bpp_checked[] = {0, 0, 0, 0, 0};</div><div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>&#160;        <span class="keywordtype">int</span> bpp_index = 0;</div><div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>&#160;        <span class="keywordtype">int</span> i, j, result, modeswitch, done = 0;</div><div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>&#160;</div><div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>&#160;        <span class="keywordflow">for</span> (j = 0; j &lt; 4; j++)</div><div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>&#160;        {</div><div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>&#160;            <span class="keywordflow">if</span> (bpp_to_check[j] == <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9">allegro_gl_get</a>(<a class="code" href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5">AGL_COLOR_DEPTH</a>))</div><div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>&#160;            {</div><div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>&#160;                bpp_index = j;</div><div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>&#160;                <span class="keywordflow">break</span>;</div><div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>&#160;            }</div><div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>&#160;        }</div><div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>&#160;</div><div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>&#160;        dm.dmSize = <span class="keyword">sizeof</span>(DEVMODE);</div><div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>&#160;        dm_saved.dmSize = <span class="keyword">sizeof</span>(DEVMODE);</div><div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>&#160;        </div><div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>&#160;        <span class="comment">/* Save old mode */</span></div><div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>&#160;        EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &amp;dm_saved);</div><div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>&#160;        dm.dmBitsPerPel = desktop_depth; <span class="comment">/* Go around Win95&#39;s bug */</span></div><div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>&#160;</div><div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>&#160;        <span class="keywordflow">do</span></div><div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>&#160;        {</div><div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>&#160;            <span class="keywordflow">if</span> (!bpp_to_check[bpp_index])</div><div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>&#160;            {</div><div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>&#160;                TRACE(PREFIX_E <span class="stringliteral">&quot;win_init(): No more color depths to test.\n&quot;</span></div><div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>&#160;                      <span class="stringliteral">&quot;\tUnable to find appropriate full screen mode and pixel &quot;</span></div><div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>&#160;                      <span class="stringliteral">&quot;format.\n&quot;</span>);</div><div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>&#160;                <span class="keywordflow">goto</span> Error;</div><div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>&#160;            }</div><div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>&#160;</div><div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>&#160;            TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): Testing color depth: %i\n&quot;</span>,</div><div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>&#160;                  bpp_to_check[bpp_index]);</div><div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>&#160;            </div><div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>&#160;            memset(&amp;dm, 0, <span class="keyword">sizeof</span>(DEVMODE));</div><div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>&#160;            dm.dmSize = <span class="keyword">sizeof</span>(DEVMODE);</div><div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>&#160;            </div><div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>&#160;            i = 0;</div><div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>&#160;            <span class="keywordflow">do</span> </div><div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>&#160;            {</div><div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>&#160;                modeswitch = EnumDisplaySettings(NULL, i, &amp;dm);</div><div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>&#160;                <span class="keywordflow">if</span> (!modeswitch)</div><div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>&#160;                    <span class="keywordflow">break</span>;</div><div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>&#160;</div><div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>&#160;                <span class="keywordflow">if</span> ((dm.dmPelsWidth  == (<span class="keywordtype">unsigned</span>) w)</div><div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>&#160;                 &amp;&amp; (dm.dmPelsHeight == (<span class="keywordtype">unsigned</span>) h)</div><div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>&#160;                 &amp;&amp; (dm.dmBitsPerPel == (<span class="keywordtype">unsigned</span>) bpp_to_check[bpp_index])</div><div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>&#160;                 &amp;&amp; (dm.dmDisplayFrequency != (<span class="keywordtype">unsigned</span>) refresh_rate)) {</div><div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>&#160;                    <span class="comment">/* Keep it as fallback if refresh rate request could not</span></div><div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>&#160;<span class="comment">                     * be satisfied. Try to get as close to 60Hz as possible though,</span></div><div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>&#160;<span class="comment">                     * it&#39;s a bit better for a fallback than just blindly picking</span></div><div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>&#160;<span class="comment">                     * something like 47Hz or 200Hz.</span></div><div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>&#160;<span class="comment">                     */</span></div><div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>&#160;                    <span class="keywordflow">if</span> (!fallback_dm_valid) {</div><div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>&#160;                        fallback_dm = dm;</div><div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>&#160;                        fallback_dm_valid = 1;</div><div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>&#160;                    }</div><div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>&#160;                    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dm.dmDisplayFrequency &gt;= 60) {</div><div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>&#160;                        <span class="keywordflow">if</span> (dm.dmDisplayFrequency &lt; fallback_dm.dmDisplayFrequency) {</div><div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>&#160;                            fallback_dm = dm;</div><div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>&#160;                        }</div><div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>&#160;                    }</div><div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>&#160;                }</div><div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>&#160;        </div><div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>&#160;                i++;</div><div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>&#160;            }</div><div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>&#160;            <span class="keywordflow">while</span> ((dm.dmPelsWidth  != (<span class="keywordtype">unsigned</span>) w)</div><div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>&#160;                || (dm.dmPelsHeight != (<span class="keywordtype">unsigned</span>) h)</div><div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>&#160;                || (dm.dmBitsPerPel != (<span class="keywordtype">unsigned</span>) bpp_to_check[bpp_index])</div><div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>&#160;                || (dm.dmDisplayFrequency != (<span class="keywordtype">unsigned</span>) refresh_rate));</div><div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>&#160;</div><div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>&#160;            <span class="keywordflow">if</span> (!modeswitch &amp;&amp; !fallback_dm_valid) {</div><div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>&#160;                TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): Unable to set mode, continuing &quot;</span></div><div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>&#160;                      <span class="stringliteral">&quot;with next color depth\n&quot;</span>);</div><div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>&#160;            }</div><div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>&#160;            <span class="keywordflow">else</span> {</div><div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>&#160;                <span class="keywordflow">if</span> (!modeswitch &amp;&amp; fallback_dm_valid)</div><div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>&#160;                    dm = fallback_dm;</div><div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>&#160;</div><div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>&#160;                TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): bpp_to_check[bpp_index] = %i\n&quot;</span>,</div><div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>&#160;                      bpp_to_check[bpp_index]);</div><div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>&#160;                TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): dm.dmBitsPerPel = %i\n&quot;</span>,</div><div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>&#160;                      (<span class="keywordtype">int</span>)dm.dmBitsPerPel);</div><div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>&#160;</div><div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>&#160;                dm.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL</div><div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>&#160;                            | DM_DISPLAYFREQUENCY;</div><div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>&#160;</div><div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>&#160;                result = ChangeDisplaySettings(&amp;dm, CDS_FULLSCREEN);</div><div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>&#160;</div><div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>&#160;                <span class="keywordflow">if</span> (result == DISP_CHANGE_SUCCESSFUL) </div><div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>&#160;                {</div><div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>&#160;                    TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): Setting pixel format.\n&quot;</span>);</div><div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>&#160;                    pf = select_pixel_format(&amp;pfd);</div><div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>&#160;                    <span class="keywordflow">if</span> (pf) {</div><div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>&#160;                        TRACE(PREFIX_I <span class="stringliteral">&quot;mode found\n&quot;</span>);</div><div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>&#160;                        _set_current_refresh_rate(dm.dmDisplayFrequency);</div><div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>&#160;                        done = 1;</div><div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>&#160;                    }</div><div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>&#160;                    <span class="keywordflow">else</span> {</div><div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>&#160;                        TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): Couldn&#39;t find compatible &quot;</span></div><div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>&#160;                              <span class="stringliteral">&quot;GL context. Trying another screen mode.\n&quot;</span>);</div><div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>&#160;                    }</div><div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>&#160;                }</div><div class="line"><a name="l01454"></a><span class="lineno"> 1454</span>&#160;            }</div><div class="line"><a name="l01455"></a><span class="lineno"> 1455</span>&#160;</div><div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>&#160;            fallback_dm_valid = 0;</div><div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>&#160;            bpp_checked[bpp_index] = 1;</div><div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>&#160;</div><div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>&#160;            bpp_index = 0;</div><div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>&#160;            <span class="keywordflow">while</span> (bpp_checked[bpp_index]) {</div><div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>&#160;                bpp_index++;</div><div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>&#160;            }</div><div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>&#160;        } <span class="keywordflow">while</span> (!done);</div><div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>&#160;    }</div><div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>&#160;        DEVMODE dm;</div><div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>&#160;</div><div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>&#160;        memset(&amp;dm, 0, <span class="keyword">sizeof</span>(DEVMODE));</div><div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>&#160;        dm.dmSize = <span class="keyword">sizeof</span>(DEVMODE);</div><div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>&#160;        <span class="keywordflow">if</span> (EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &amp;dm) != 0) {</div><div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>&#160;            _set_current_refresh_rate(dm.dmDisplayFrequency);</div><div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>&#160;        }</div><div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>&#160;    }</div><div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>&#160;</div><div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>&#160;    <span class="keywordflow">if</span> (!fullscreen) {</div><div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): Setting pixel format.\n&quot;</span>);</div><div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>&#160;        pf = select_pixel_format(&amp;pfd);</div><div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>&#160;        <span class="keywordflow">if</span> (pf == 0)</div><div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>&#160;            <span class="keywordflow">goto</span> Error;</div><div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>&#160;    }</div><div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>&#160;</div><div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>&#160;    <span class="comment">/* set the pixel format */</span></div><div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>&#160;    <span class="keywordflow">if</span> (!SetPixelFormat(__allegro_gl_hdc, pf, &amp;pfd)) { </div><div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>&#160;        log_win32_error(<span class="stringliteral">&quot;win_init&quot;</span>,</div><div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>&#160;                    <span class="stringliteral">&quot;Unable to set pixel format.&quot;</span>,</div><div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>&#160;                    GetLastError());</div><div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>&#160;        <span class="keywordflow">goto</span> Error;</div><div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>&#160;    }</div><div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>&#160;</div><div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>&#160;    <span class="comment">/* create an OpenGL context */</span></div><div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>&#160;    allegro_glrc = wglCreateContext(__allegro_gl_hdc);</div><div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>&#160;    </div><div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>&#160;    <span class="keywordflow">if</span> (!allegro_glrc) { <span class="comment">/* make the context the current one */</span></div><div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>&#160;        log_win32_error(<span class="stringliteral">&quot;win_init&quot;</span>,</div><div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>&#160;                    <span class="stringliteral">&quot;Unable to create a render context!&quot;</span>,</div><div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>&#160;                    GetLastError());</div><div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>&#160;        <span class="keywordflow">goto</span> Error;</div><div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>&#160;    }</div><div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>&#160;    <span class="keywordflow">if</span> (!wglMakeCurrent(__allegro_gl_hdc, allegro_glrc)) {</div><div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>&#160;        log_win32_error(<span class="stringliteral">&quot;win_init&quot;</span>,</div><div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>&#160;                    <span class="stringliteral">&quot;Unable to make the context current!&quot;</span>,</div><div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>&#160;                    GetLastError());</div><div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>&#160;        <span class="keywordflow">goto</span> Error;</div><div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>&#160;    }</div><div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>&#160;</div><div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>&#160;</div><div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>&#160;    <span class="keywordflow">if</span> (__wglGetPixelFormatAttribivARB || __wglGetPixelFormatAttribivEXT) {</div><div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>&#160;        describe_pixel_format_new(__allegro_gl_hdc, pf, desktop_depth,</div><div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>&#160;                                  NULL, NULL, &amp;allegro_gl_display_info);</div><div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>&#160;    }</div><div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>&#160;        describe_pixel_format_old(__allegro_gl_hdc, pf, desktop_depth,</div><div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>&#160;                                  NULL, NULL, &amp;allegro_gl_display_info);</div><div class="line"><a name="l01514"></a><span class="lineno"> 1514</span>&#160;    }</div><div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>&#160;    </div><div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>&#160;    </div><div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>&#160;    __allegro_gl_set_allegro_image_format(FALSE);</div><div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>&#160;    set_color_depth(allegro_gl_display_info.colour_depth);</div><div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>&#160;    allegro_gl_display_info.w = w;</div><div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>&#160;    allegro_gl_display_info.h = h;</div><div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>&#160;</div><div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>&#160;    </div><div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>&#160;    <span class="comment">/* &lt;rohannessian&gt; Win98/2k/XP&#39;s window forground rules don&#39;t let us</span></div><div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>&#160;<span class="comment">     * make our window the topmost window on launch. This causes issues on </span></div><div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>&#160;<span class="comment">     * full-screen apps, as DInput loses input focus on them.</span></div><div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>&#160;<span class="comment">     * We use this trick to force the window to be topmost, when switching</span></div><div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>&#160;<span class="comment">     * to full-screen only. Note that this only works for Win98 and greater.</span></div><div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>&#160;<span class="comment">     * Win95 will ignore our SystemParametersInfo() calls.</span></div><div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>&#160;<span class="comment">     * </span></div><div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>&#160;<span class="comment">     * See http://support.microsoft.com:80/support/kb/articles/Q97/9/25.asp</span></div><div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>&#160;<span class="comment">     * for details.</span></div><div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>&#160;    {</div><div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>&#160;        DWORD lock_time;</div><div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>&#160;</div><div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>&#160;<span class="preprocessor">#define SPI_GETFOREGROUNDLOCKTIMEOUT 0x2000</span></div><div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>&#160;<span class="preprocessor">#define SPI_SETFOREGROUNDLOCKTIMEOUT 0x2001</span></div><div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>&#160;        <span class="keywordflow">if</span> (fullscreen) {</div><div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>&#160;            SystemParametersInfo(SPI_GETFOREGROUNDLOCKTIMEOUT,</div><div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>&#160;                                 0, (LPVOID)&amp;lock_time, 0);</div><div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>&#160;            SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT,</div><div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>&#160;                                 0, (LPVOID)0,</div><div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>&#160;                                 SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);</div><div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>&#160;        }</div><div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>&#160;</div><div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>&#160;        ShowWindow(wnd, SW_SHOWNORMAL);</div><div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>&#160;        SetForegroundWindow(wnd);</div><div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>&#160;        <span class="comment">/* In some rare cases, it doesn&#39;t seem to work without the loop. And we</span></div><div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>&#160;<span class="comment">         * absolutely need this to succeed, else we trap the user in a</span></div><div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>&#160;<span class="comment">         * fullscreen window without input.</span></div><div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>&#160;<span class="comment">         */</span></div><div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>&#160;        <span class="keywordflow">while</span> (GetForegroundWindow() != wnd) {</div><div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>&#160;            rest(100);</div><div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>&#160;            SetForegroundWindow(wnd);</div><div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>&#160;        }</div><div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>&#160;        UpdateWindow(wnd);</div><div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>&#160;</div><div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>&#160;        <span class="keywordflow">if</span> (fullscreen) {</div><div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>&#160;            SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT,</div><div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>&#160;                                 0, (LPVOID)lock_time,</div><div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>&#160;                                 SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);</div><div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>&#160;        }</div><div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>&#160;<span class="preprocessor">#undef SPI_GETFOREGROUNDLOCKTIMEOUT</span></div><div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>&#160;<span class="preprocessor">#undef SPI_SETFOREGROUNDLOCKTIMEOUT</span></div><div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>&#160;    }</div><div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>&#160;        </div><div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>&#160;    win_grab_input();</div><div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>&#160;    </div><div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>&#160;    <span class="keywordflow">if</span> (fullscreen) {</div><div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>&#160;        <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>= allegro_gl_create_screen(&amp;gfx_allegro_gl_fullscreen,</div><div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>&#160;                                        w, h, <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9">allegro_gl_get</a>(<a class="code" href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5">AGL_COLOR_DEPTH</a>));</div><div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>&#160;    }</div><div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>&#160;        <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>= allegro_gl_create_screen(&amp;gfx_allegro_gl_windowed,</div><div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>&#160;                                        w, h, <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9">allegro_gl_get</a>(<a class="code" href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5">AGL_COLOR_DEPTH</a>));</div><div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>&#160;    }</div><div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>&#160;</div><div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>) {</div><div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>&#160;        ChangeDisplaySettings(NULL, 0);</div><div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>&#160;        <span class="keywordflow">goto</span> Error;</div><div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>&#160;    }</div><div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>&#160;    </div><div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>&#160;</div><div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): GLScreen: %ix%ix%i\n&quot;</span>,</div><div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>&#160;          w, h, <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9">allegro_gl_get</a>(<a class="code" href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5">AGL_COLOR_DEPTH</a>));</div><div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>&#160;</div><div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>&#160;    <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>-&gt;id |= BMP_ID_VIDEO | BMP_ID_MASK;</div><div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>&#160;</div><div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>&#160;    __allegro_gl_valid_context = TRUE;</div><div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>&#160;    __allegro_gl_driver = &amp;allegro_gl_win;</div><div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>&#160;    initialized = 1;</div><div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>&#160;</div><div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>&#160;    <span class="comment">/* Print out OpenGL version info */</span></div><div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;OpenGL Version: %s\n&quot;</span>, (AL_CONST <span class="keywordtype">char</span>*)glGetString(GL_VERSION));</div><div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Vendor: %s\n&quot;</span>, (AL_CONST <span class="keywordtype">char</span>*)glGetString(GL_VENDOR));</div><div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>&#160;    TRACE(PREFIX_I <span class="stringliteral">&quot;Renderer: %s\n\n&quot;</span>, (AL_CONST <span class="keywordtype">char</span>*)glGetString(GL_RENDERER));</div><div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>&#160;</div><div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>&#160;    <span class="comment">/* Detect if the GL driver is based on Mesa */</span></div><div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>&#160;    allegro_gl_info.is_mesa_driver = FALSE;</div><div class="line"><a name="l01600"></a><span class="lineno"> 1600</span>&#160;    <span class="keywordflow">if</span> (strstr((AL_CONST <span class="keywordtype">char</span>*)glGetString(GL_VERSION),<span class="stringliteral">&quot;Mesa&quot;</span>)) {</div><div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>&#160;        AGL_LOG(1, <span class="stringliteral">&quot;OpenGL driver based on Mesa\n&quot;</span>);</div><div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>&#160;        allegro_gl_info.is_mesa_driver = TRUE;</div><div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>&#160;    }</div><div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>&#160;</div><div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>&#160;    <span class="comment">/* init the GL extensions */</span></div><div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>&#160;    __allegro_gl_manage_extensions();</div><div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>&#160;    </div><div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>&#160;    <span class="comment">/* Update screen vtable in order to use AGL&#39;s */</span></div><div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>&#160;    __allegro_gl__glvtable_update_vtable(&amp;<a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>-&gt;vtable);</div><div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>&#160;    memcpy(&amp;_screen_vtable, <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>-&gt;vtable, <span class="keyword">sizeof</span>(GFX_VTABLE));</div><div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>&#160;    <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>-&gt;vtable = &amp;_screen_vtable;</div><div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>&#160;</div><div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>&#160;    <span class="comment">/* Print out WGL extension info */</span></div><div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>&#160;    <span class="keywordflow">if</span> (wglGetExtensionsStringARB) {</div><div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>&#160;        AGL_LOG(1, <span class="stringliteral">&quot;WGL Extensions :\n&quot;</span>);</div><div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>&#160;<span class="preprocessor">#if LOGLEVEL &gt;= 1</span></div><div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>&#160;        __allegro_gl_print_extensions((AL_CONST <span class="keywordtype">char</span>*)wglGetExtensionsStringARB(wglGetCurrentDC()));</div><div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>&#160;    }</div><div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>&#160;    <span class="keywordflow">else</span> {</div><div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>&#160;        TRACE(PREFIX_I <span class="stringliteral">&quot;win_init(): No WGL Extensions available\n&quot;</span>);</div><div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>&#160;    }</div><div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>&#160;</div><div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>&#160;    gfx_capabilities |= GFX_HW_CURSOR;</div><div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>&#160;</div><div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>&#160;    <span class="comment">/* Initialize a reasonable viewport. Those should be OpenGL defaults,</span></div><div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>&#160;<span class="comment">     * but some drivers don&#39;t implement this correctly.</span></div><div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>&#160;<span class="comment">     */</span> </div><div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>&#160;    glViewport(0, 0, SCREEN_W, SCREEN_H);</div><div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>&#160;    glMatrixMode(GL_PROJECTION);</div><div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>&#160;    glLoadIdentity();</div><div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>&#160;    glMatrixMode(GL_MODELVIEW);</div><div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>&#160;    glLoadIdentity();</div><div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>&#160;</div><div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436">allegro_gl_extensions_GL</a>.ARB_multisample) {</div><div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>&#160;        <span class="comment">/* Workaround some &quot;special&quot; drivers that do not export the extension</span></div><div class="line"><a name="l01637"></a><span class="lineno"> 1637</span>&#160;<span class="comment">         * once it was promoted to core.*/</span></div><div class="line"><a name="l01638"></a><span class="lineno"> 1638</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="group__core.html#ga444d507eaeb5ba800787f6a81827615d">allegro_gl_opengl_version</a>() &gt;= 1.3)</div><div class="line"><a name="l01639"></a><span class="lineno"> 1639</span>&#160;            glSampleCoverage(1.0, GL_FALSE);</div><div class="line"><a name="l01640"></a><span class="lineno"> 1640</span>&#160;        <span class="keywordflow">else</span></div><div class="line"><a name="l01641"></a><span class="lineno"> 1641</span>&#160;            glSampleCoverageARB(1.0, GL_FALSE);</div><div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>&#160;    }</div><div class="line"><a name="l01643"></a><span class="lineno"> 1643</span>&#160;    </div><div class="line"><a name="l01644"></a><span class="lineno"> 1644</span>&#160;    <span class="comment">/* Set up some variables that some GL drivers omit */</span></div><div class="line"><a name="l01645"></a><span class="lineno"> 1645</span>&#160;    glBindTexture(GL_TEXTURE_2D, 0);</div><div class="line"><a name="l01646"></a><span class="lineno"> 1646</span>&#160;    </div><div class="line"><a name="l01647"></a><span class="lineno"> 1647</span>&#160;    screen = <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>;</div><div class="line"><a name="l01648"></a><span class="lineno"> 1648</span>&#160;</div><div class="line"><a name="l01649"></a><span class="lineno"> 1649</span>&#160;    <span class="keywordflow">if</span> (fullscreen)</div><div class="line"><a name="l01650"></a><span class="lineno"> 1650</span>&#160;        remove_dummy_window();</div><div class="line"><a name="l01651"></a><span class="lineno"> 1651</span>&#160;</div><div class="line"><a name="l01652"></a><span class="lineno"> 1652</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a>;</div><div class="line"><a name="l01653"></a><span class="lineno"> 1653</span>&#160;    </div><div class="line"><a name="l01654"></a><span class="lineno"> 1654</span>&#160;Error:</div><div class="line"><a name="l01655"></a><span class="lineno"> 1655</span>&#160;    <span class="keywordflow">if</span> (allegro_glrc) {</div><div class="line"><a name="l01656"></a><span class="lineno"> 1656</span>&#160;        wglDeleteContext(allegro_glrc);</div><div class="line"><a name="l01657"></a><span class="lineno"> 1657</span>&#160;    }</div><div class="line"><a name="l01658"></a><span class="lineno"> 1658</span>&#160;    <span class="keywordflow">if</span> (__allegro_gl_hdc) {</div><div class="line"><a name="l01659"></a><span class="lineno"> 1659</span>&#160;        ReleaseDC(wnd, __allegro_gl_hdc);</div><div class="line"><a name="l01660"></a><span class="lineno"> 1660</span>&#160;    }</div><div class="line"><a name="l01661"></a><span class="lineno"> 1661</span>&#160;    __allegro_gl_hdc = NULL;</div><div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>&#160;    ChangeDisplaySettings(NULL, 0);</div><div class="line"><a name="l01663"></a><span class="lineno"> 1663</span>&#160;    allegro_gl_win_exit(NULL);</div><div class="line"><a name="l01664"></a><span class="lineno"> 1664</span>&#160;</div><div class="line"><a name="l01665"></a><span class="lineno"> 1665</span>&#160;    <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l01666"></a><span class="lineno"> 1666</span>&#160;}</div><div class="line"><a name="l01667"></a><span class="lineno"> 1667</span>&#160;</div><div class="line"><a name="l01668"></a><span class="lineno"> 1668</span>&#160;</div><div class="line"><a name="l01669"></a><span class="lineno"> 1669</span>&#160;</div><div class="line"><a name="l01670"></a><span class="lineno"> 1670</span>&#160;<span class="keyword">static</span> BITMAP *allegro_gl_win_init_windowed(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> v_w, <span class="keywordtype">int</span> v_h,</div><div class="line"><a name="l01671"></a><span class="lineno"> 1671</span>&#160;                                            <span class="keywordtype">int</span> color_depth)</div><div class="line"><a name="l01672"></a><span class="lineno"> 1672</span>&#160;{</div><div class="line"><a name="l01673"></a><span class="lineno"> 1673</span>&#160;    fullscreen = 0;</div><div class="line"><a name="l01674"></a><span class="lineno"> 1674</span>&#160;    <span class="keywordflow">return</span> allegro_gl_win_init(w, h, v_w, v_h);</div><div class="line"><a name="l01675"></a><span class="lineno"> 1675</span>&#160;}</div><div class="line"><a name="l01676"></a><span class="lineno"> 1676</span>&#160;</div><div class="line"><a name="l01677"></a><span class="lineno"> 1677</span>&#160;</div><div class="line"><a name="l01678"></a><span class="lineno"> 1678</span>&#160;</div><div class="line"><a name="l01679"></a><span class="lineno"> 1679</span>&#160;<span class="keyword">static</span> BITMAP *allegro_gl_win_init_fullscreen(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> v_w, <span class="keywordtype">int</span> v_h,</div><div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>&#160;                                              <span class="keywordtype">int</span> color_depth)</div><div class="line"><a name="l01681"></a><span class="lineno"> 1681</span>&#160;{</div><div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>&#160;    fullscreen = 1;</div><div class="line"><a name="l01683"></a><span class="lineno"> 1683</span>&#160;    <span class="keywordflow">return</span> allegro_gl_win_init(w, h, v_w, v_h);</div><div class="line"><a name="l01684"></a><span class="lineno"> 1684</span>&#160;}</div><div class="line"><a name="l01685"></a><span class="lineno"> 1685</span>&#160;</div><div class="line"><a name="l01686"></a><span class="lineno"> 1686</span>&#160;</div><div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>&#160;</div><div class="line"><a name="l01688"></a><span class="lineno"> 1688</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_win_exit(<span class="keyword">struct</span> BITMAP *b)</div><div class="line"><a name="l01689"></a><span class="lineno"> 1689</span>&#160;{</div><div class="line"><a name="l01690"></a><span class="lineno"> 1690</span>&#160;    <span class="comment">/* XXX &lt;rohannessian&gt; For some reason, uncommenting this line will blank</span></div><div class="line"><a name="l01691"></a><span class="lineno"> 1691</span>&#160;<span class="comment">     * out the log file.</span></div><div class="line"><a name="l01692"></a><span class="lineno"> 1692</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l01693"></a><span class="lineno"> 1693</span>&#160;    <span class="comment">//TRACE(PREFIX_I &quot;allegro_gl_win_exit: Shutting down.\n&quot;);</span></div><div class="line"><a name="l01694"></a><span class="lineno"> 1694</span>&#160;    __allegro_gl_unmanage_extensions();</div><div class="line"><a name="l01695"></a><span class="lineno"> 1695</span>&#160;    </div><div class="line"><a name="l01696"></a><span class="lineno"> 1696</span>&#160;    <span class="keywordflow">if</span> (allegro_glrc) {</div><div class="line"><a name="l01697"></a><span class="lineno"> 1697</span>&#160;        wglDeleteContext(allegro_glrc);</div><div class="line"><a name="l01698"></a><span class="lineno"> 1698</span>&#160;        allegro_glrc = NULL;</div><div class="line"><a name="l01699"></a><span class="lineno"> 1699</span>&#160;    }</div><div class="line"><a name="l01700"></a><span class="lineno"> 1700</span>&#160;        </div><div class="line"><a name="l01701"></a><span class="lineno"> 1701</span>&#160;    <span class="keywordflow">if</span> (__allegro_gl_hdc) {</div><div class="line"><a name="l01702"></a><span class="lineno"> 1702</span>&#160;        ReleaseDC(wnd, __allegro_gl_hdc);</div><div class="line"><a name="l01703"></a><span class="lineno"> 1703</span>&#160;        __allegro_gl_hdc = NULL;</div><div class="line"><a name="l01704"></a><span class="lineno"> 1704</span>&#160;    }</div><div class="line"><a name="l01705"></a><span class="lineno"> 1705</span>&#160;</div><div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>&#160;    <span class="keywordflow">if</span> (fullscreen &amp;&amp; initialized) {</div><div class="line"><a name="l01707"></a><span class="lineno"> 1707</span>&#160;        <span class="comment">/* Restore screen */</span></div><div class="line"><a name="l01708"></a><span class="lineno"> 1708</span>&#160;        ChangeDisplaySettings(NULL, 0);</div><div class="line"><a name="l01709"></a><span class="lineno"> 1709</span>&#160;        _set_current_refresh_rate(0);</div><div class="line"><a name="l01710"></a><span class="lineno"> 1710</span>&#160;    }</div><div class="line"><a name="l01711"></a><span class="lineno"> 1711</span>&#160;    initialized = 0;</div><div class="line"><a name="l01712"></a><span class="lineno"> 1712</span>&#160;</div><div class="line"><a name="l01713"></a><span class="lineno"> 1713</span>&#160;    <span class="comment">/* Note: Allegro will destroy screen (== allegro_gl_screen),</span></div><div class="line"><a name="l01714"></a><span class="lineno"> 1714</span>&#160;<span class="comment">     * so don&#39;t destroy it here.</span></div><div class="line"><a name="l01715"></a><span class="lineno"> 1715</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l01716"></a><span class="lineno"> 1716</span>&#160;    <span class="comment">//destroy_bitmap(allegro_gl_screen);</span></div><div class="line"><a name="l01717"></a><span class="lineno"> 1717</span>&#160;    <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a> = NULL;</div><div class="line"><a name="l01718"></a><span class="lineno"> 1718</span>&#160;    </div><div class="line"><a name="l01719"></a><span class="lineno"> 1719</span>&#160;    <span class="comment">/* hide the window */</span></div><div class="line"><a name="l01720"></a><span class="lineno"> 1720</span>&#160;    system_driver-&gt;restore_console_state();</div><div class="line"><a name="l01721"></a><span class="lineno"> 1721</span>&#160;</div><div class="line"><a name="l01722"></a><span class="lineno"> 1722</span>&#160;    <span class="comment">/* restore original Allegro styles */</span></div><div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>&#160;    SetWindowLong(wnd, GWL_STYLE, style_saved);</div><div class="line"><a name="l01724"></a><span class="lineno"> 1724</span>&#160;    SetWindowLong(wnd, GWL_EXSTYLE, exstyle_saved);</div><div class="line"><a name="l01725"></a><span class="lineno"> 1725</span>&#160;    SetWindowPos(wnd, 0, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER</div><div class="line"><a name="l01726"></a><span class="lineno"> 1726</span>&#160;                                   | SWP_FRAMECHANGED);</div><div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>&#160;</div><div class="line"><a name="l01728"></a><span class="lineno"> 1728</span>&#160;    __allegro_gl_valid_context = FALSE;</div><div class="line"><a name="l01729"></a><span class="lineno"> 1729</span>&#160;    </div><div class="line"><a name="l01730"></a><span class="lineno"> 1730</span>&#160;    <span class="keywordflow">return</span>;</div><div class="line"><a name="l01731"></a><span class="lineno"> 1731</span>&#160;}</div><div class="line"><a name="l01732"></a><span class="lineno"> 1732</span>&#160;</div><div class="line"><a name="l01733"></a><span class="lineno"> 1733</span>&#160;</div><div class="line"><a name="l01734"></a><span class="lineno"> 1734</span>&#160;<span class="comment">/* </span></div><div class="line"><a name="l01735"></a><span class="lineno"> 1735</span>&#160;<span class="comment">   Returns TRUE is dm doesn&#39;t match any mode in mode_list, FALSE otherwise.</span></div><div class="line"><a name="l01736"></a><span class="lineno"> 1736</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l01737"></a><span class="lineno"> 1737</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> is_mode_entry_unique(GFX_MODE_LIST *mode_list, DEVMODE *dm) {</div><div class="line"><a name="l01738"></a><span class="lineno"> 1738</span>&#160;    <span class="keywordtype">int</span> i;</div><div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>&#160;    </div><div class="line"><a name="l01740"></a><span class="lineno"> 1740</span>&#160;    <span class="keywordflow">for</span> (i = 0; i &lt; mode_list-&gt;num_modes; ++i) {</div><div class="line"><a name="l01741"></a><span class="lineno"> 1741</span>&#160;        <span class="keywordflow">if</span> (mode_list-&gt;mode[i].width == (<span class="keywordtype">int</span>)dm-&gt;dmPelsWidth</div><div class="line"><a name="l01742"></a><span class="lineno"> 1742</span>&#160;            &amp;&amp; mode_list-&gt;mode[i].height == (<span class="keywordtype">int</span>)dm-&gt;dmPelsHeight</div><div class="line"><a name="l01743"></a><span class="lineno"> 1743</span>&#160;            &amp;&amp; mode_list-&gt;mode[i].bpp == (<span class="keywordtype">int</span>)dm-&gt;dmBitsPerPel)</div><div class="line"><a name="l01744"></a><span class="lineno"> 1744</span>&#160;            <span class="keywordflow">return</span> FALSE;</div><div class="line"><a name="l01745"></a><span class="lineno"> 1745</span>&#160;    }</div><div class="line"><a name="l01746"></a><span class="lineno"> 1746</span>&#160;    </div><div class="line"><a name="l01747"></a><span class="lineno"> 1747</span>&#160;    <span class="keywordflow">return</span> TRUE;</div><div class="line"><a name="l01748"></a><span class="lineno"> 1748</span>&#160;}</div><div class="line"><a name="l01749"></a><span class="lineno"> 1749</span>&#160;</div><div class="line"><a name="l01750"></a><span class="lineno"> 1750</span>&#160;</div><div class="line"><a name="l01751"></a><span class="lineno"> 1751</span>&#160;</div><div class="line"><a name="l01752"></a><span class="lineno"> 1752</span>&#160;<span class="comment">/* Returns a list of valid video modes */</span></div><div class="line"><a name="l01753"></a><span class="lineno"> 1753</span>&#160;<span class="keyword">static</span> GFX_MODE_LIST* allegro_gl_win_fetch_mode_list(<span class="keywordtype">void</span>)</div><div class="line"><a name="l01754"></a><span class="lineno"> 1754</span>&#160;{</div><div class="line"><a name="l01755"></a><span class="lineno"> 1755</span>&#160;    <span class="keywordtype">int</span> c, modes_count;</div><div class="line"><a name="l01756"></a><span class="lineno"> 1756</span>&#160;    GFX_MODE_LIST *mode_list;</div><div class="line"><a name="l01757"></a><span class="lineno"> 1757</span>&#160;    DEVMODE dm;</div><div class="line"><a name="l01758"></a><span class="lineno"> 1758</span>&#160;</div><div class="line"><a name="l01759"></a><span class="lineno"> 1759</span>&#160;    dm.dmSize = <span class="keyword">sizeof</span>(DEVMODE);</div><div class="line"><a name="l01760"></a><span class="lineno"> 1760</span>&#160;</div><div class="line"><a name="l01761"></a><span class="lineno"> 1761</span>&#160;    <span class="comment">/* Allocate space for mode list. */</span></div><div class="line"><a name="l01762"></a><span class="lineno"> 1762</span>&#160;    mode_list = malloc(<span class="keyword">sizeof</span>(GFX_MODE_LIST));</div><div class="line"><a name="l01763"></a><span class="lineno"> 1763</span>&#160;    <span class="keywordflow">if</span> (!mode_list) {</div><div class="line"><a name="l01764"></a><span class="lineno"> 1764</span>&#160;        <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l01765"></a><span class="lineno"> 1765</span>&#160;    }</div><div class="line"><a name="l01766"></a><span class="lineno"> 1766</span>&#160;</div><div class="line"><a name="l01767"></a><span class="lineno"> 1767</span>&#160;    <span class="comment">/* Allocate and fill the first mode in case EnumDisplaySettings fails at</span></div><div class="line"><a name="l01768"></a><span class="lineno"> 1768</span>&#160;<span class="comment">     * first call.</span></div><div class="line"><a name="l01769"></a><span class="lineno"> 1769</span>&#160;<span class="comment">     */</span></div><div class="line"><a name="l01770"></a><span class="lineno"> 1770</span>&#160;    mode_list-&gt;mode = malloc(<span class="keyword">sizeof</span>(GFX_MODE));</div><div class="line"><a name="l01771"></a><span class="lineno"> 1771</span>&#160;    <span class="keywordflow">if</span> (!mode_list-&gt;mode) {</div><div class="line"><a name="l01772"></a><span class="lineno"> 1772</span>&#160;        free(mode_list);</div><div class="line"><a name="l01773"></a><span class="lineno"> 1773</span>&#160;        <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l01774"></a><span class="lineno"> 1774</span>&#160;    }</div><div class="line"><a name="l01775"></a><span class="lineno"> 1775</span>&#160;    mode_list-&gt;mode[0].width = 0;</div><div class="line"><a name="l01776"></a><span class="lineno"> 1776</span>&#160;    mode_list-&gt;mode[0].height = 0;</div><div class="line"><a name="l01777"></a><span class="lineno"> 1777</span>&#160;    mode_list-&gt;mode[0].bpp = 0;</div><div class="line"><a name="l01778"></a><span class="lineno"> 1778</span>&#160;    mode_list-&gt;num_modes = 0;</div><div class="line"><a name="l01779"></a><span class="lineno"> 1779</span>&#160;</div><div class="line"><a name="l01780"></a><span class="lineno"> 1780</span>&#160;    modes_count = 0;</div><div class="line"><a name="l01781"></a><span class="lineno"> 1781</span>&#160;    c = 0;</div><div class="line"><a name="l01782"></a><span class="lineno"> 1782</span>&#160;    <span class="keywordflow">while</span> (EnumDisplaySettings(NULL, c, &amp;dm)) {</div><div class="line"><a name="l01783"></a><span class="lineno"> 1783</span>&#160;        mode_list-&gt;mode = realloc(mode_list-&gt;mode,</div><div class="line"><a name="l01784"></a><span class="lineno"> 1784</span>&#160;                                <span class="keyword">sizeof</span>(GFX_MODE) * (modes_count + 2));</div><div class="line"><a name="l01785"></a><span class="lineno"> 1785</span>&#160;        <span class="keywordflow">if</span> (!mode_list-&gt;mode) {</div><div class="line"><a name="l01786"></a><span class="lineno"> 1786</span>&#160;            free(mode_list);</div><div class="line"><a name="l01787"></a><span class="lineno"> 1787</span>&#160;            <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l01788"></a><span class="lineno"> 1788</span>&#160;        }</div><div class="line"><a name="l01789"></a><span class="lineno"> 1789</span>&#160;</div><div class="line"><a name="l01790"></a><span class="lineno"> 1790</span>&#160;        <span class="comment">/* Filter modes with bpp lower than 9, and those which are already</span></div><div class="line"><a name="l01791"></a><span class="lineno"> 1791</span>&#160;<span class="comment">         * in there.</span></div><div class="line"><a name="l01792"></a><span class="lineno"> 1792</span>&#160;<span class="comment">         */</span></div><div class="line"><a name="l01793"></a><span class="lineno"> 1793</span>&#160;        <span class="keywordflow">if</span> (dm.dmBitsPerPel &gt; 8 &amp;&amp; is_mode_entry_unique(mode_list, &amp;dm)) {</div><div class="line"><a name="l01794"></a><span class="lineno"> 1794</span>&#160;            mode_list-&gt;mode[modes_count].width = dm.dmPelsWidth;</div><div class="line"><a name="l01795"></a><span class="lineno"> 1795</span>&#160;            mode_list-&gt;mode[modes_count].height = dm.dmPelsHeight;</div><div class="line"><a name="l01796"></a><span class="lineno"> 1796</span>&#160;            mode_list-&gt;mode[modes_count].bpp = dm.dmBitsPerPel;</div><div class="line"><a name="l01797"></a><span class="lineno"> 1797</span>&#160;            ++modes_count;</div><div class="line"><a name="l01798"></a><span class="lineno"> 1798</span>&#160;            mode_list-&gt;mode[modes_count].width = 0;</div><div class="line"><a name="l01799"></a><span class="lineno"> 1799</span>&#160;            mode_list-&gt;mode[modes_count].height = 0;</div><div class="line"><a name="l01800"></a><span class="lineno"> 1800</span>&#160;            mode_list-&gt;mode[modes_count].bpp = 0;</div><div class="line"><a name="l01801"></a><span class="lineno"> 1801</span>&#160;            mode_list-&gt;num_modes = modes_count;</div><div class="line"><a name="l01802"></a><span class="lineno"> 1802</span>&#160;        }</div><div class="line"><a name="l01803"></a><span class="lineno"> 1803</span>&#160;        ++c;</div><div class="line"><a name="l01804"></a><span class="lineno"> 1804</span>&#160;    };</div><div class="line"><a name="l01805"></a><span class="lineno"> 1805</span>&#160;</div><div class="line"><a name="l01806"></a><span class="lineno"> 1806</span>&#160;    <span class="keywordflow">return</span> mode_list;</div><div class="line"><a name="l01807"></a><span class="lineno"> 1807</span>&#160;}</div><div class="line"><a name="l01808"></a><span class="lineno"> 1808</span>&#160;</div><div class="line"><a name="l01809"></a><span class="lineno"> 1809</span>&#160;</div><div class="line"><a name="l01810"></a><span class="lineno"> 1810</span>&#160;</div><div class="line"><a name="l01811"></a><span class="lineno"> 1811</span>&#160;</div><div class="line"><a name="l01812"></a><span class="lineno"> 1812</span>&#160;<span class="comment">/* AllegroGL driver routines */</span></div><div class="line"><a name="l01813"></a><span class="lineno"> 1813</span>&#160;</div><div class="line"><a name="l01814"></a><span class="lineno"> 1814</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> flip(<span class="keywordtype">void</span>)</div><div class="line"><a name="l01815"></a><span class="lineno"> 1815</span>&#160;{</div><div class="line"><a name="l01816"></a><span class="lineno"> 1816</span>&#160;    SwapBuffers(__allegro_gl_hdc);</div><div class="line"><a name="l01817"></a><span class="lineno"> 1817</span>&#160;}</div><div class="line"><a name="l01818"></a><span class="lineno"> 1818</span>&#160;</div><div class="line"><a name="l01819"></a><span class="lineno"> 1819</span>&#160;</div><div class="line"><a name="l01820"></a><span class="lineno"> 1820</span>&#160;</div><div class="line"><a name="l01821"></a><span class="lineno"> 1821</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> gl_on(<span class="keywordtype">void</span>)</div><div class="line"><a name="l01822"></a><span class="lineno"> 1822</span>&#160;{</div><div class="line"><a name="l01823"></a><span class="lineno"> 1823</span>&#160;    <span class="keywordflow">return</span>;</div><div class="line"><a name="l01824"></a><span class="lineno"> 1824</span>&#160;}</div><div class="line"><a name="l01825"></a><span class="lineno"> 1825</span>&#160;</div><div class="line"><a name="l01826"></a><span class="lineno"> 1826</span>&#160;</div><div class="line"><a name="l01827"></a><span class="lineno"> 1827</span>&#160;</div><div class="line"><a name="l01828"></a><span class="lineno"> 1828</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> gl_off(<span class="keywordtype">void</span>)</div><div class="line"><a name="l01829"></a><span class="lineno"> 1829</span>&#160;{</div><div class="line"><a name="l01830"></a><span class="lineno"> 1830</span>&#160;    <span class="keywordflow">return</span>;</div><div class="line"><a name="l01831"></a><span class="lineno"> 1831</span>&#160;}</div><div class="line"><a name="l01832"></a><span class="lineno"> 1832</span>&#160;</div><div class="line"><a name="l01833"></a><span class="lineno"> 1833</span>&#160;</div><div class="line"><a name="l01834"></a><span class="lineno"> 1834</span>&#160;</div><div class="line"><a name="l01835"></a><span class="lineno"> 1835</span>&#160;<span class="comment">/* AllegroGL driver */</span></div><div class="line"><a name="l01836"></a><span class="lineno"> 1836</span>&#160;</div><div class="line"><a name="l01837"></a><span class="lineno"> 1837</span>&#160;<span class="keyword">static</span> <span class="keyword">struct </span>allegro_gl_driver allegro_gl_win = {</div><div class="line"><a name="l01838"></a><span class="lineno"> 1838</span>&#160;    flip, gl_on, gl_off, NULL</div><div class="line"><a name="l01839"></a><span class="lineno"> 1839</span>&#160;};</div><div class="line"><a name="l01840"></a><span class="lineno"> 1840</span>&#160;</div><div class="ttc" id="alleggl_8h_html_afd00c615b3351d54382b5f883b99544f"><div class="ttname"><a href="alleggl_8h.html#afd00c615b3351d54382b5f883b99544f">GFX_OPENGL_FULLSCREEN</a></div><div class="ttdeci">#define GFX_OPENGL_FULLSCREEN</div><div class="ttdoc">Fullscreen OpenGL graphics driver for Allegro. </div><div class="ttdef"><b>Definition:</b> <a href="alleggl_8h_source.html#l00435">alleggl.h:435</a></div></div>
<div class="ttc" id="group__core_html_ga444d507eaeb5ba800787f6a81827615d"><div class="ttname"><a href="group__core.html#ga444d507eaeb5ba800787f6a81827615d">allegro_gl_opengl_version</a></div><div class="ttdeci">float allegro_gl_opengl_version(void)</div><div class="ttdoc">Returns the OpenGL version number of the client (the computer the program is running on)...</div><div class="ttdef"><b>Definition:</b> <a href="alleggl_8c_source.html#l00971">alleggl.c:971</a></div></div>
<div class="ttc" id="group__settings_html_ga2179291ddb3cb528c3c0cf84af5c51a9"><div class="ttname"><a href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9">allegro_gl_get</a></div><div class="ttdeci">int allegro_gl_get(int option)</div><div class="ttdoc">Reads the setting of a configuration option. </div><div class="ttdef"><b>Definition:</b> <a href="alleggl_8c_source.html#l00421">alleggl.c:421</a></div></div>
<div class="ttc" id="group__extensions_html_ga7492f6f6acc608789210560ee63e5436"><div class="ttname"><a href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436">allegro_gl_extensions_GL</a></div><div class="ttdeci">struct AGL_EXTENSION_LIST_GL allegro_gl_extensions_GL</div><div class="ttdoc">List of OpenGL extensions supported by AllegroGL. </div><div class="ttdef"><b>Definition:</b> <a href="glext_8c_source.html#l00055">glext.c:55</a></div></div>
<div class="ttc" id="group__settings_html_gafea8132efd1fcac7a7f997ef0fe34cfa"><div class="ttname"><a href="group__settings.html#gafea8132efd1fcac7a7f997ef0fe34cfa">AGL_WINDOW_X</a></div><div class="ttdeci">#define AGL_WINDOW_X</div><div class="ttdoc">Requests a placement of the window to a specified pixel location. </div><div class="ttdef"><b>Definition:</b> <a href="alleggl_8h_source.html#l00296">alleggl.h:296</a></div></div>
<div class="ttc" id="group__settings_html_ga80b7ef911d06ddee6d94d528cc6d914a"><div class="ttname"><a href="group__settings.html#ga80b7ef911d06ddee6d94d528cc6d914a">AGL_WINDOW_Y</a></div><div class="ttdeci">#define AGL_WINDOW_Y</div><div class="ttdoc">Same as AGL_WINDOW_X, but for the y-axis. </div><div class="ttdef"><b>Definition:</b> <a href="alleggl_8h_source.html#l00300">alleggl.h:300</a></div></div>
<div class="ttc" id="group__settings_html_ga71846e567336fe02f8f063af1282ddc5"><div class="ttname"><a href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5">AGL_COLOR_DEPTH</a></div><div class="ttdeci">#define AGL_COLOR_DEPTH</div><div class="ttdoc">Specify the total color depth of the frame buffer. </div><div class="ttdef"><b>Definition:</b> <a href="alleggl_8h_source.html#l00223">alleggl.h:223</a></div></div>
<div class="ttc" id="alleggl_8h_html_a5fcf0497998fecc3c04bb5b6ce66782b"><div class="ttname"><a href="alleggl_8h.html#a5fcf0497998fecc3c04bb5b6ce66782b">GFX_OPENGL_WINDOWED</a></div><div class="ttdeci">#define GFX_OPENGL_WINDOWED</div><div class="ttdoc">Windowed OpenGL graphics driver for Allegro. </div><div class="ttdef"><b>Definition:</b> <a href="alleggl_8h_source.html#l00433">alleggl.h:433</a></div></div>
<div class="ttc" id="videovtb_8c_html_a69a97f6c3805246762fbefb545f20f87"><div class="ttname"><a href="videovtb_8c.html#a69a97f6c3805246762fbefb545f20f87">allegro_gl_destroy_video_bitmap</a></div><div class="ttdeci">void allegro_gl_destroy_video_bitmap(BITMAP *bmp)</div><div class="ttdoc">destroy_video_bitmap() overload. </div><div class="ttdef"><b>Definition:</b> <a href="videovtb_8c_source.html#l00308">videovtb.c:308</a></div></div>
<div class="ttc" id="group__extensions_html_ga7351f56ea1c4f4665193fc3bf547ff0a"><div class="ttname"><a href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a">allegro_gl_is_extension_supported</a></div><div class="ttdeci">int allegro_gl_is_extension_supported(AL_CONST char *extension)</div><div class="ttdoc">This function is an helper to determine whether an OpenGL extension is available or not...</div><div class="ttdef"><b>Definition:</b> <a href="glext_8c_source.html#l00306">glext.c:306</a></div></div>
<div class="ttc" id="alleggl_8h_html"><div class="ttname"><a href="alleggl_8h.html">alleggl.h</a></div><div class="ttdoc">Main header file for AllegroGL. </div></div>
<div class="ttc" id="alleggl_8c_html_a84d9cceae55bf273f9aab7512b353284"><div class="ttname"><a href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">allegro_gl_screen</a></div><div class="ttdeci">BITMAP * allegro_gl_screen</div><div class="ttdoc">Direct-mode GL `screen&amp;#39; bitmap. </div><div class="ttdef"><b>Definition:</b> <a href="alleggl_8c_source.html#l00062">alleggl.c:62</a></div></div>
<div class="ttc" id="videovtb_8c_html_a4dadb9b189453bc9693c032ce63fc5b4"><div class="ttname"><a href="videovtb_8c.html#a4dadb9b189453bc9693c032ce63fc5b4">allegro_gl_create_video_bitmap</a></div><div class="ttdeci">BITMAP * allegro_gl_create_video_bitmap(int w, int h)</div><div class="ttdoc">create_video_bitmap() overload. </div><div class="ttdef"><b>Definition:</b> <a href="videovtb_8c_source.html#l00344">videovtb.c:344</a></div></div>
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