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<div id="projectname">AllegroGL <span id="projectnumber">0.4.4</span></div>
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<h1>alleggl.c</h1> </div>
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<div class="contents">
<a href="alleggl_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* This code is (C) AllegroGL contributors, and double licensed under</span>
<a name="l00002"></a>00002 <span class="comment"> * the GPL and zlib licenses. See gpl.txt or zlib.txt for details.</span>
<a name="l00003"></a>00003 <span class="comment"> */</span>
<a name="l00011"></a>00011 <span class="preprocessor">#include <string.h></span>
<a name="l00012"></a>00012 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="preprocessor">#include "alleggl.h"</span>
<a name="l00015"></a>00015 <span class="preprocessor">#include "allglint.h"</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#include <allegro/internal/aintern.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#ifdef ALLEGRO_MACOSX</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor">#include <OpenGL/glu.h></span>
<a name="l00020"></a>00020 <span class="preprocessor">#else</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#include <GL/glu.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#endif</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#define PREFIX_I "agl INFO: "</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#define PREFIX_E "agl ERROR: "</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#define PREFIX_L "agl LOG: "</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="comment">/* Structs containing the current driver state */</span>
<a name="l00030"></a>00030 <span class="keyword">struct </span>allegro_gl_driver *__allegro_gl_driver = NULL;
<a name="l00031"></a>00031 <span class="keyword">struct </span>allegro_gl_display_info allegro_gl_display_info;
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="comment">/* Settings required/suggested */</span>
<a name="l00034"></a>00034 <span class="keywordtype">int</span> __allegro_gl_required_settings, __allegro_gl_suggested_settings;
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="comment">/* Valid context state */</span>
<a name="l00037"></a>00037 <span class="keywordtype">int</span> __allegro_gl_valid_context = 0;
<a name="l00038"></a>00038
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="comment">/* Operation to enable while blitting. */</span>
<a name="l00041"></a>00041 <span class="keywordtype">int</span> __allegro_gl_blit_operation;
<a name="l00042"></a>00042
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="keywordtype">char</span> allegro_gl_error[AGL_ERROR_SIZE] = EMPTY_STRING;
<a name="l00045"></a>00045
<a name="l00046"></a>00046 BLIT_BETWEEN_FORMATS_FUNC __blit_between_formats8;
<a name="l00047"></a>00047 BLIT_BETWEEN_FORMATS_FUNC __blit_between_formats15;
<a name="l00048"></a>00048 BLIT_BETWEEN_FORMATS_FUNC __blit_between_formats16;
<a name="l00049"></a>00049 BLIT_BETWEEN_FORMATS_FUNC __blit_between_formats24;
<a name="l00050"></a>00050 BLIT_BETWEEN_FORMATS_FUNC __blit_between_formats32;
<a name="l00051"></a>00051
<a name="l00052"></a>00052
<a name="l00053"></a>00053
<a name="l00062"></a><a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284">00062</a> BITMAP *<a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>;
<a name="l00063"></a>00063
<a name="l00064"></a>00064
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="comment">/* Allegro GFX_DRIVER list handling */</span>
<a name="l00067"></a>00067 <span class="keyword">static</span> _DRIVER_INFO our_driver_list[] = {
<a name="l00068"></a>00068 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l00069"></a>00069 <span class="preprocessor"></span> {<a class="code" href="alleggl_8h.html#a5fcf0497998fecc3c04bb5b6ce66782b" title="Windowed OpenGL graphics driver for Allegro.">GFX_OPENGL_WINDOWED</a>, &gfx_allegro_gl_windowed, FALSE},
<a name="l00070"></a>00070 <span class="preprocessor">#endif</span>
<a name="l00071"></a>00071 <span class="preprocessor"></span><span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l00072"></a>00072 <span class="preprocessor"></span> {<a class="code" href="alleggl_8h.html#afd00c615b3351d54382b5f883b99544f" title="Fullscreen OpenGL graphics driver for Allegro.">GFX_OPENGL_FULLSCREEN</a>, &gfx_allegro_gl_fullscreen, FALSE},
<a name="l00073"></a>00073 <span class="preprocessor">#endif</span>
<a name="l00074"></a>00074 <span class="preprocessor"></span> {<a class="code" href="alleggl_8h.html#a6341d90e32c19c45f003442b19ecba5f" title="Non-specific OpenGL graphics driver for Allegro.">GFX_OPENGL</a>, &gfx_allegro_gl_default, FALSE},
<a name="l00075"></a>00075 {0, NULL, FALSE}
<a name="l00076"></a>00076 };
<a name="l00077"></a>00077
<a name="l00078"></a>00078
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keyword">static</span> _DRIVER_INFO *our_gfx_drivers(<span class="keywordtype">void</span>)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="keywordflow">return</span> our_driver_list;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085
<a name="l00086"></a>00086
<a name="l00087"></a>00087 _DRIVER_INFO *(*saved_gfx_drivers) (void) = NULL;
<a name="l00088"></a>00088
<a name="l00089"></a>00089
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keyword">static</span> _DRIVER_INFO *list_saved_gfx_drivers(<span class="keywordtype">void</span>)
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093 <span class="keywordflow">return</span> _gfx_driver_list;
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095
<a name="l00096"></a>00096
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="keyword">static</span> BITMAP *allegro_gl_default_gfx_init(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> vw, <span class="keywordtype">int</span> vh, <span class="keywordtype">int</span> depth);
<a name="l00099"></a>00099
<a name="l00100"></a>00100
<a name="l00101"></a>00101
<a name="l00102"></a>00102 GFX_DRIVER gfx_allegro_gl_default =
<a name="l00103"></a>00103 {
<a name="l00104"></a>00104 <a class="code" href="alleggl_8h.html#a6341d90e32c19c45f003442b19ecba5f" title="Non-specific OpenGL graphics driver for Allegro.">GFX_OPENGL</a>,
<a name="l00105"></a>00105 EMPTY_STRING,
<a name="l00106"></a>00106 EMPTY_STRING,
<a name="l00107"></a>00107 <span class="stringliteral">"AllegroGL Default Driver"</span>,
<a name="l00108"></a>00108 allegro_gl_default_gfx_init,
<a name="l00109"></a>00109 NULL,
<a name="l00110"></a>00110 NULL,
<a name="l00111"></a>00111 NULL, <span class="comment">//_xwin_vsync,</span>
<a name="l00112"></a>00112 NULL,
<a name="l00113"></a>00113 NULL, NULL, NULL,
<a name="l00114"></a>00114 NULL, <span class="comment">/* create_video_bitmap */</span>
<a name="l00115"></a>00115 NULL,
<a name="l00116"></a>00116 NULL, NULL, <span class="comment">/* No show/request video bitmaps */</span>
<a name="l00117"></a>00117 NULL, NULL,
<a name="l00118"></a>00118 NULL, NULL, NULL, NULL,
<a name="l00119"></a>00119 NULL,
<a name="l00120"></a>00120 NULL, NULL,
<a name="l00121"></a>00121 NULL, <span class="comment">/* set_blender_mode */</span>
<a name="l00122"></a>00122 NULL, <span class="comment">/* No fetch_mode_list */</span>
<a name="l00123"></a>00123 0, 0,
<a name="l00124"></a>00124 0,
<a name="l00125"></a>00125 0, 0,
<a name="l00126"></a>00126 0,
<a name="l00127"></a>00127 0,
<a name="l00128"></a>00128 FALSE <span class="comment">/* Windowed mode */</span>
<a name="l00129"></a>00129 };
<a name="l00130"></a>00130
<a name="l00131"></a>00131
<a name="l00132"></a>00132
<a name="l00176"></a>00176 <span class="comment">/* void allegro_gl_clear_settings(void) */</span>
<a name="l00193"></a><a class="code" href="group__settings.html#gadd1249980001c22cb3eba880561a7e19">00193</a> <span class="keywordtype">void</span> <a class="code" href="group__settings.html#gadd1249980001c22cb3eba880561a7e19" title="Clear the option settings All settings are set to their default values, and marked as neither suggest...">allegro_gl_clear_settings</a>(<span class="keywordtype">void</span>)
<a name="l00194"></a>00194 {
<a name="l00195"></a>00195 memset(&allegro_gl_display_info, 0, <span class="keyword">sizeof</span> allegro_gl_display_info);
<a name="l00196"></a>00196
<a name="l00197"></a>00197 __allegro_gl_required_settings = __allegro_gl_suggested_settings = 0;
<a name="l00198"></a>00198
<a name="l00199"></a>00199 <span class="comment">/* Pick sensible defaults */</span>
<a name="l00200"></a>00200 allegro_gl_display_info.fullscreen = 1;
<a name="l00201"></a>00201 allegro_gl_display_info.rmethod = 1;
<a name="l00202"></a>00202 allegro_gl_display_info.doublebuffered = 1;
<a name="l00203"></a>00203 allegro_gl_display_info.vidmem_policy = <a class="code" href="group__settings.html#ga5deef983a0f5b2704746d7945c614b7c" title="Keep internal texture in video memory.">AGL_KEEP</a>;
<a name="l00204"></a>00204 __allegro_gl_suggested_settings =
<a name="l00205"></a>00205 <a class="code" href="group__settings.html#ga1baffefcedaffebf7ca47724a0441e60" title="Set if you&#39;d like a full screen mode.">AGL_FULLSCREEN</a> | <a class="code" href="group__settings.html#ga3cd047a464c8f8d928f9529226a4cf12" title="Set it if you&#39;d like AllegroGL to pay special attention on whether hardware acceleration is prese...">AGL_RENDERMETHOD</a> | <a class="code" href="group__settings.html#gaa1150ae35d6ff9b33d5771f29f9770dd" title="Creates a backbuffer if set.">AGL_DOUBLEBUFFER</a>;
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207
<a name="l00208"></a>00208
<a name="l00209"></a>00209
<a name="l00210"></a>00210 <span class="comment">/* void allegro_gl_set(int option, int value) */</span>
<a name="l00274"></a><a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656">00274</a> <span class="keywordtype">void</span> <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<span class="keywordtype">int</span> option, <span class="keywordtype">int</span> value)
<a name="l00275"></a>00275 {
<a name="l00276"></a>00276 <span class="keywordflow">switch</span> (option) {
<a name="l00277"></a>00277 <span class="comment">/* Options stating importance of other options */</span>
<a name="l00278"></a>00278 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga839ae567340a64a97480e6abf1743b5f" title="Reject other values for these settings.">AGL_REQUIRE</a>:
<a name="l00279"></a>00279 __allegro_gl_required_settings |= value;
<a name="l00280"></a>00280 __allegro_gl_suggested_settings &= ~value;
<a name="l00281"></a>00281 <span class="keywordflow">break</span>;
<a name="l00282"></a>00282 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga5a1518fe9c1b44beb7f5bdcc42b6b8f1" title="Prefer the assigned values for these settings.">AGL_SUGGEST</a>:
<a name="l00283"></a>00283 __allegro_gl_suggested_settings |= value;
<a name="l00284"></a>00284 __allegro_gl_required_settings &= ~value;
<a name="l00285"></a>00285 <span class="keywordflow">break</span>;
<a name="l00286"></a>00286 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga7a6285db6617b68ae4946556c6a4636d" title="Ignore these settings.">AGL_DONTCARE</a>:
<a name="l00287"></a>00287 __allegro_gl_required_settings &= ~value;
<a name="l00288"></a>00288 __allegro_gl_suggested_settings &= ~value;
<a name="l00289"></a>00289 <span class="keywordflow">break</span>;
<a name="l00290"></a>00290
<a name="l00291"></a>00291 <span class="comment">/* Options configuring the mode set */</span>
<a name="l00292"></a>00292 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gab34e1290cbeb5fe252642f3bd59f0a52" title="Use Allegro-compatible framebuffer.">AGL_ALLEGRO_FORMAT</a>:
<a name="l00293"></a>00293 allegro_gl_display_info.allegro_format = value;
<a name="l00294"></a>00294 <span class="keywordflow">break</span>;
<a name="l00295"></a>00295 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gabe75eb7c907fedeef4763ad6c3ffd8f0" title="Select the red depth of the frame buffer.">AGL_RED_DEPTH</a>:
<a name="l00296"></a>00296 allegro_gl_display_info.pixel_size.rgba.r = value;
<a name="l00297"></a>00297 <span class="keywordflow">break</span>;
<a name="l00298"></a>00298 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gada8f8e9bb4e0ccf1bf7f7353d1e6032d" title="Select the green depth of the frame buffer.">AGL_GREEN_DEPTH</a>:
<a name="l00299"></a>00299 allegro_gl_display_info.pixel_size.rgba.g = value;
<a name="l00300"></a>00300 <span class="keywordflow">break</span>;
<a name="l00301"></a>00301 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga8efacc076a3d6523dd989211833c1ca8" title="Select the blue depth of the frame buffer.">AGL_BLUE_DEPTH</a>:
<a name="l00302"></a>00302 allegro_gl_display_info.pixel_size.rgba.b = value;
<a name="l00303"></a>00303 <span class="keywordflow">break</span>;
<a name="l00304"></a>00304 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gad37b2a655ca53a34bb41bc629c8aa51e" title="Select the alpha depth of the frame buffer.">AGL_ALPHA_DEPTH</a>:
<a name="l00305"></a>00305 allegro_gl_display_info.pixel_size.rgba.a = value;
<a name="l00306"></a>00306 <span class="keywordflow">break</span>;
<a name="l00307"></a>00307 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5" title="Specify the total color depth of the frame buffer.">AGL_COLOR_DEPTH</a>:
<a name="l00308"></a>00308 <span class="keywordflow">switch</span> (value) {
<a name="l00309"></a>00309 <span class="keywordflow">case</span> 8:
<a name="l00310"></a>00310 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gabe75eb7c907fedeef4763ad6c3ffd8f0" title="Select the red depth of the frame buffer.">AGL_RED_DEPTH</a>, 3);
<a name="l00311"></a>00311 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gada8f8e9bb4e0ccf1bf7f7353d1e6032d" title="Select the green depth of the frame buffer.">AGL_GREEN_DEPTH</a>, 3);
<a name="l00312"></a>00312 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#ga8efacc076a3d6523dd989211833c1ca8" title="Select the blue depth of the frame buffer.">AGL_BLUE_DEPTH</a>, 2);
<a name="l00313"></a>00313 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gad37b2a655ca53a34bb41bc629c8aa51e" title="Select the alpha depth of the frame buffer.">AGL_ALPHA_DEPTH</a>, 0);
<a name="l00314"></a>00314 <span class="keywordflow">break</span>;
<a name="l00315"></a>00315 <span class="keywordflow">case</span> 15:
<a name="l00316"></a>00316 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gabe75eb7c907fedeef4763ad6c3ffd8f0" title="Select the red depth of the frame buffer.">AGL_RED_DEPTH</a>, 5);
<a name="l00317"></a>00317 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gada8f8e9bb4e0ccf1bf7f7353d1e6032d" title="Select the green depth of the frame buffer.">AGL_GREEN_DEPTH</a>, 5);
<a name="l00318"></a>00318 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#ga8efacc076a3d6523dd989211833c1ca8" title="Select the blue depth of the frame buffer.">AGL_BLUE_DEPTH</a>, 5);
<a name="l00319"></a>00319 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gad37b2a655ca53a34bb41bc629c8aa51e" title="Select the alpha depth of the frame buffer.">AGL_ALPHA_DEPTH</a>, 1);
<a name="l00320"></a>00320 <span class="keywordflow">break</span>;
<a name="l00321"></a>00321 <span class="keywordflow">case</span> 16:
<a name="l00322"></a>00322 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gabe75eb7c907fedeef4763ad6c3ffd8f0" title="Select the red depth of the frame buffer.">AGL_RED_DEPTH</a>, 5);
<a name="l00323"></a>00323 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gada8f8e9bb4e0ccf1bf7f7353d1e6032d" title="Select the green depth of the frame buffer.">AGL_GREEN_DEPTH</a>, 6);
<a name="l00324"></a>00324 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#ga8efacc076a3d6523dd989211833c1ca8" title="Select the blue depth of the frame buffer.">AGL_BLUE_DEPTH</a>, 5);
<a name="l00325"></a>00325 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gad37b2a655ca53a34bb41bc629c8aa51e" title="Select the alpha depth of the frame buffer.">AGL_ALPHA_DEPTH</a>, 0);
<a name="l00326"></a>00326 <span class="keywordflow">break</span>;
<a name="l00327"></a>00327 <span class="keywordflow">case</span> 24:
<a name="l00328"></a>00328 <span class="keywordflow">case</span> 32:
<a name="l00329"></a>00329 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gabe75eb7c907fedeef4763ad6c3ffd8f0" title="Select the red depth of the frame buffer.">AGL_RED_DEPTH</a>, 8);
<a name="l00330"></a>00330 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gada8f8e9bb4e0ccf1bf7f7353d1e6032d" title="Select the green depth of the frame buffer.">AGL_GREEN_DEPTH</a>, 8);
<a name="l00331"></a>00331 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#ga8efacc076a3d6523dd989211833c1ca8" title="Select the blue depth of the frame buffer.">AGL_BLUE_DEPTH</a>, 8);
<a name="l00332"></a>00332 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#gad37b2a655ca53a34bb41bc629c8aa51e" title="Select the alpha depth of the frame buffer.">AGL_ALPHA_DEPTH</a>, value-24);
<a name="l00333"></a>00333 <span class="keywordflow">break</span>;
<a name="l00334"></a>00334 }
<a name="l00335"></a>00335 allegro_gl_display_info.colour_depth = value;
<a name="l00336"></a>00336 <span class="keywordflow">break</span>;
<a name="l00337"></a>00337 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga317622005a4a2956a0d1659d3c47822a" title="Select the red depth of the accumulator buffer.">AGL_ACC_RED_DEPTH</a>:
<a name="l00338"></a>00338 allegro_gl_display_info.accum_size.rgba.r = value;
<a name="l00339"></a>00339 <span class="keywordflow">break</span>;
<a name="l00340"></a>00340 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga00f4cfb4cb19b60d677b6941fec903ba" title="Select the green depth of the accumulator buffer.">AGL_ACC_GREEN_DEPTH</a>:
<a name="l00341"></a>00341 allegro_gl_display_info.accum_size.rgba.g = value;
<a name="l00342"></a>00342 <span class="keywordflow">break</span>;
<a name="l00343"></a>00343 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gaf80c6da60114ac3962aabcfd8745b97e" title="Select the blue depth of the accumulator buffer.">AGL_ACC_BLUE_DEPTH</a>:
<a name="l00344"></a>00344 allegro_gl_display_info.accum_size.rgba.b = value;
<a name="l00345"></a>00345 <span class="keywordflow">break</span>;
<a name="l00346"></a>00346 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gab8eba4f52cdb3d333b237c0ab0b3594a" title="Select the alpha depth of the accumulator buffer.">AGL_ACC_ALPHA_DEPTH</a>:
<a name="l00347"></a>00347 allegro_gl_display_info.accum_size.rgba.a = value;
<a name="l00348"></a>00348 <span class="keywordflow">break</span>;
<a name="l00349"></a>00349
<a name="l00350"></a>00350 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gaa1150ae35d6ff9b33d5771f29f9770dd" title="Creates a backbuffer if set.">AGL_DOUBLEBUFFER</a>:
<a name="l00351"></a>00351 allegro_gl_display_info.doublebuffered = value;
<a name="l00352"></a>00352 <span class="keywordflow">break</span>;
<a name="l00353"></a>00353 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga47be892718fa4b2c6166caf51da67489" title="Creates seperate left/right buffers for stereo display.">AGL_STEREO</a>:
<a name="l00354"></a>00354 allegro_gl_display_info.stereo = value;
<a name="l00355"></a>00355 <span class="keywordflow">break</span>;
<a name="l00356"></a>00356 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga6267cbe7841d12c35d59032f66b7b871" title="Creates additional auxiliary buffers.">AGL_AUX_BUFFERS</a>:
<a name="l00357"></a>00357 allegro_gl_display_info.aux_buffers = value;
<a name="l00358"></a>00358 <span class="keywordflow">break</span>;
<a name="l00359"></a>00359 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gabef24a727709a823e8fc900fdb72892e" title="Select the depth of the z-buffer.">AGL_Z_DEPTH</a>:
<a name="l00360"></a>00360 allegro_gl_display_info.depth_size = value;
<a name="l00361"></a>00361 <span class="keywordflow">break</span>;
<a name="l00362"></a>00362 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga7b34772508e08edb0436e85d2d696fb9" title="Select the depth of the stencil buffer.">AGL_STENCIL_DEPTH</a>:
<a name="l00363"></a>00363 allegro_gl_display_info.stencil_size = value;
<a name="l00364"></a>00364 <span class="keywordflow">break</span>;
<a name="l00365"></a>00365
<a name="l00366"></a>00366 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gafea8132efd1fcac7a7f997ef0fe34cfa" title="Requests a placement of the window to a specified pixel location.">AGL_WINDOW_X</a>:
<a name="l00367"></a>00367 allegro_gl_display_info.x = value;
<a name="l00368"></a>00368 <span class="keywordflow">break</span>;
<a name="l00369"></a>00369 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga80b7ef911d06ddee6d94d528cc6d914a" title="Same as AGL_WINDOW_X, but for the y-axis.">AGL_WINDOW_Y</a>:
<a name="l00370"></a>00370 allegro_gl_display_info.y = value;
<a name="l00371"></a>00371 <span class="keywordflow">break</span>;
<a name="l00372"></a>00372
<a name="l00373"></a>00373 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga3cd047a464c8f8d928f9529226a4cf12" title="Set it if you&#39;d like AllegroGL to pay special attention on whether hardware acceleration is prese...">AGL_RENDERMETHOD</a>:
<a name="l00374"></a>00374 allegro_gl_display_info.rmethod = value;
<a name="l00375"></a>00375 <span class="keywordflow">break</span>;
<a name="l00376"></a>00376
<a name="l00377"></a>00377 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga1baffefcedaffebf7ca47724a0441e60" title="Set if you&#39;d like a full screen mode.">AGL_FULLSCREEN</a>:
<a name="l00378"></a>00378 allegro_gl_display_info.fullscreen = value;
<a name="l00379"></a>00379 <span class="keywordflow">break</span>;
<a name="l00380"></a>00380
<a name="l00381"></a>00381 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga6fcfd5d01183e704595b05fa9812b94f" title="Set if you&#39;d like a windowed mode.">AGL_WINDOWED</a>:
<a name="l00382"></a>00382 allegro_gl_display_info.fullscreen = !value;
<a name="l00383"></a>00383 <span class="keywordflow">break</span>;
<a name="l00384"></a>00384 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gab78a9c8ca24294b008d706a409c4fa37" title="Define AllegroGL&#39;s policy relative to video memory usage.">AGL_VIDEO_MEMORY_POLICY</a>:
<a name="l00385"></a>00385 <span class="keywordflow">if</span> ((value == <a class="code" href="group__settings.html#ga5deef983a0f5b2704746d7945c614b7c" title="Keep internal texture in video memory.">AGL_KEEP</a>) || (value == <a class="code" href="group__settings.html#ga77a6cb708e52f68f893128db6f20bdea" title="Release video memory occupied by internal texture.">AGL_RELEASE</a>))
<a name="l00386"></a>00386 allegro_gl_display_info.vidmem_policy = value;
<a name="l00387"></a>00387 <span class="keywordflow">break</span>;
<a name="l00388"></a>00388 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gae1836cab58a366c122ace31160fe0e06" title="Define multisample parameters Some OpenGL ICDs expose an extension called GL_ARB_multisample which pr...">AGL_SAMPLE_BUFFERS</a>:
<a name="l00389"></a>00389 allegro_gl_display_info.sample_buffers = value;
<a name="l00390"></a>00390 <span class="keywordflow">break</span>;
<a name="l00391"></a>00391 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga92d9751c38774297013087e89a25749d" title="Define multisample samples Set this value to the number of samples that can be accepted in the multis...">AGL_SAMPLES</a>:
<a name="l00392"></a>00392 allegro_gl_display_info.samples = value;
<a name="l00393"></a>00393 <span class="keywordflow">break</span>;
<a name="l00394"></a>00394 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gafeffd285319ab06291f90d03ff8b2482" title="Floating-point Color buffer.">AGL_FLOAT_COLOR</a>:
<a name="l00395"></a>00395 allegro_gl_display_info.float_color = value;
<a name="l00396"></a>00396 <span class="keywordflow">break</span>;
<a name="l00397"></a>00397 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga468710b6f682956d724f984ab7fa8e02" title="Floating-point Depth buffer.">AGL_FLOAT_Z</a>:
<a name="l00398"></a>00398 allegro_gl_display_info.float_depth = value;
<a name="l00399"></a>00399 <span class="keywordflow">break</span>;
<a name="l00400"></a>00400 }
<a name="l00401"></a>00401 }
<a name="l00402"></a>00402
<a name="l00403"></a>00403
<a name="l00404"></a>00404
<a name="l00421"></a><a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9">00421</a> <span class="keywordtype">int</span> <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(<span class="keywordtype">int</span> option)
<a name="l00422"></a>00422 {
<a name="l00423"></a>00423 <span class="keywordflow">switch</span> (option) {
<a name="l00424"></a>00424 <span class="comment">/* Options stating importance of other options */</span>
<a name="l00425"></a>00425 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga839ae567340a64a97480e6abf1743b5f" title="Reject other values for these settings.">AGL_REQUIRE</a>:
<a name="l00426"></a>00426 <span class="keywordflow">return</span> __allegro_gl_required_settings;
<a name="l00427"></a>00427 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga5a1518fe9c1b44beb7f5bdcc42b6b8f1" title="Prefer the assigned values for these settings.">AGL_SUGGEST</a>:
<a name="l00428"></a>00428 <span class="keywordflow">return</span> __allegro_gl_suggested_settings;
<a name="l00429"></a>00429 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga7a6285db6617b68ae4946556c6a4636d" title="Ignore these settings.">AGL_DONTCARE</a>:
<a name="l00430"></a>00430 <span class="keywordflow">return</span> ~0 & ~(__allegro_gl_required_settings |
<a name="l00431"></a>00431 __allegro_gl_suggested_settings);
<a name="l00432"></a>00432
<a name="l00433"></a>00433 <span class="comment">/* Options configuring the mode set */</span>
<a name="l00434"></a>00434 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gab34e1290cbeb5fe252642f3bd59f0a52" title="Use Allegro-compatible framebuffer.">AGL_ALLEGRO_FORMAT</a>:
<a name="l00435"></a>00435 <span class="keywordflow">return</span> allegro_gl_display_info.allegro_format;
<a name="l00436"></a>00436 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gabe75eb7c907fedeef4763ad6c3ffd8f0" title="Select the red depth of the frame buffer.">AGL_RED_DEPTH</a>:
<a name="l00437"></a>00437 <span class="keywordflow">return</span> allegro_gl_display_info.pixel_size.rgba.r;
<a name="l00438"></a>00438 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gada8f8e9bb4e0ccf1bf7f7353d1e6032d" title="Select the green depth of the frame buffer.">AGL_GREEN_DEPTH</a>:
<a name="l00439"></a>00439 <span class="keywordflow">return</span> allegro_gl_display_info.pixel_size.rgba.g;
<a name="l00440"></a>00440 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga8efacc076a3d6523dd989211833c1ca8" title="Select the blue depth of the frame buffer.">AGL_BLUE_DEPTH</a>:
<a name="l00441"></a>00441 <span class="keywordflow">return</span> allegro_gl_display_info.pixel_size.rgba.b;
<a name="l00442"></a>00442 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gad37b2a655ca53a34bb41bc629c8aa51e" title="Select the alpha depth of the frame buffer.">AGL_ALPHA_DEPTH</a>:
<a name="l00443"></a>00443 <span class="keywordflow">return</span> allegro_gl_display_info.pixel_size.rgba.a;
<a name="l00444"></a>00444 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5" title="Specify the total color depth of the frame buffer.">AGL_COLOR_DEPTH</a>:
<a name="l00445"></a>00445 <span class="keywordflow">return</span> allegro_gl_display_info.pixel_size.rgba.r
<a name="l00446"></a>00446 + allegro_gl_display_info.pixel_size.rgba.g
<a name="l00447"></a>00447 + allegro_gl_display_info.pixel_size.rgba.b
<a name="l00448"></a>00448 + allegro_gl_display_info.pixel_size.rgba.a;
<a name="l00449"></a>00449 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga317622005a4a2956a0d1659d3c47822a" title="Select the red depth of the accumulator buffer.">AGL_ACC_RED_DEPTH</a>:
<a name="l00450"></a>00450 <span class="keywordflow">return</span> allegro_gl_display_info.accum_size.rgba.r;
<a name="l00451"></a>00451 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga00f4cfb4cb19b60d677b6941fec903ba" title="Select the green depth of the accumulator buffer.">AGL_ACC_GREEN_DEPTH</a>:
<a name="l00452"></a>00452 <span class="keywordflow">return</span> allegro_gl_display_info.accum_size.rgba.g;
<a name="l00453"></a>00453 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gaf80c6da60114ac3962aabcfd8745b97e" title="Select the blue depth of the accumulator buffer.">AGL_ACC_BLUE_DEPTH</a>:
<a name="l00454"></a>00454 <span class="keywordflow">return</span> allegro_gl_display_info.accum_size.rgba.b;
<a name="l00455"></a>00455 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gab8eba4f52cdb3d333b237c0ab0b3594a" title="Select the alpha depth of the accumulator buffer.">AGL_ACC_ALPHA_DEPTH</a>:
<a name="l00456"></a>00456 <span class="keywordflow">return</span> allegro_gl_display_info.accum_size.rgba.a;
<a name="l00457"></a>00457 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gaa1150ae35d6ff9b33d5771f29f9770dd" title="Creates a backbuffer if set.">AGL_DOUBLEBUFFER</a>:
<a name="l00458"></a>00458 <span class="keywordflow">return</span> allegro_gl_display_info.doublebuffered;
<a name="l00459"></a>00459 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga47be892718fa4b2c6166caf51da67489" title="Creates seperate left/right buffers for stereo display.">AGL_STEREO</a>:
<a name="l00460"></a>00460 <span class="keywordflow">return</span> allegro_gl_display_info.stereo;
<a name="l00461"></a>00461 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga6267cbe7841d12c35d59032f66b7b871" title="Creates additional auxiliary buffers.">AGL_AUX_BUFFERS</a>:
<a name="l00462"></a>00462 <span class="keywordflow">return</span> allegro_gl_display_info.aux_buffers;
<a name="l00463"></a>00463 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gabef24a727709a823e8fc900fdb72892e" title="Select the depth of the z-buffer.">AGL_Z_DEPTH</a>:
<a name="l00464"></a>00464 <span class="keywordflow">return</span> allegro_gl_display_info.depth_size;
<a name="l00465"></a>00465 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga7b34772508e08edb0436e85d2d696fb9" title="Select the depth of the stencil buffer.">AGL_STENCIL_DEPTH</a>:
<a name="l00466"></a>00466 <span class="keywordflow">return</span> allegro_gl_display_info.stencil_size;
<a name="l00467"></a>00467 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gafea8132efd1fcac7a7f997ef0fe34cfa" title="Requests a placement of the window to a specified pixel location.">AGL_WINDOW_X</a>:
<a name="l00468"></a>00468 <span class="keywordflow">return</span> allegro_gl_display_info.x;
<a name="l00469"></a>00469 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga80b7ef911d06ddee6d94d528cc6d914a" title="Same as AGL_WINDOW_X, but for the y-axis.">AGL_WINDOW_Y</a>:
<a name="l00470"></a>00470 <span class="keywordflow">return</span> allegro_gl_display_info.y;
<a name="l00471"></a>00471 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga1baffefcedaffebf7ca47724a0441e60" title="Set if you&#39;d like a full screen mode.">AGL_FULLSCREEN</a>:
<a name="l00472"></a>00472 <span class="keywordflow">return</span> allegro_gl_display_info.fullscreen;
<a name="l00473"></a>00473 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga6fcfd5d01183e704595b05fa9812b94f" title="Set if you&#39;d like a windowed mode.">AGL_WINDOWED</a>:
<a name="l00474"></a>00474 <span class="keywordflow">return</span> !allegro_gl_display_info.fullscreen;
<a name="l00475"></a>00475 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gab78a9c8ca24294b008d706a409c4fa37" title="Define AllegroGL&#39;s policy relative to video memory usage.">AGL_VIDEO_MEMORY_POLICY</a>:
<a name="l00476"></a>00476 <span class="keywordflow">return</span> allegro_gl_display_info.vidmem_policy;
<a name="l00477"></a>00477 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gae1836cab58a366c122ace31160fe0e06" title="Define multisample parameters Some OpenGL ICDs expose an extension called GL_ARB_multisample which pr...">AGL_SAMPLE_BUFFERS</a>:
<a name="l00478"></a>00478 <span class="keywordflow">return</span> allegro_gl_display_info.sample_buffers;
<a name="l00479"></a>00479 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga92d9751c38774297013087e89a25749d" title="Define multisample samples Set this value to the number of samples that can be accepted in the multis...">AGL_SAMPLES</a>:
<a name="l00480"></a>00480 <span class="keywordflow">return</span> allegro_gl_display_info.samples;
<a name="l00481"></a>00481 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#gafeffd285319ab06291f90d03ff8b2482" title="Floating-point Color buffer.">AGL_FLOAT_COLOR</a>:
<a name="l00482"></a>00482 <span class="keywordflow">return</span> allegro_gl_display_info.float_color;
<a name="l00483"></a>00483 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga468710b6f682956d724f984ab7fa8e02" title="Floating-point Depth buffer.">AGL_FLOAT_Z</a>:
<a name="l00484"></a>00484 <span class="keywordflow">return</span> allegro_gl_display_info.float_depth;
<a name="l00485"></a>00485 }
<a name="l00486"></a>00486 <span class="keywordflow">return</span> -1;
<a name="l00487"></a>00487 }
<a name="l00488"></a>00488
<a name="l00489"></a>00489
<a name="l00490"></a>00490
<a name="l00491"></a>00491 <span class="comment">/* Builds a string corresponding to the options set in 'opt'</span>
<a name="l00492"></a>00492 <span class="comment"> * and writes in the config file</span>
<a name="l00493"></a>00493 <span class="comment"> */</span>
<a name="l00494"></a>00494 <span class="keyword">static</span> <span class="keywordtype">void</span> build_settings(<span class="keywordtype">int</span> opt, <span class="keywordtype">char</span> *section, <span class="keywordtype">char</span> *name) {
<a name="l00495"></a>00495 <span class="keywordtype">char</span> buf[2048];
<a name="l00496"></a>00496
<a name="l00497"></a>00497 usetc(buf, 0);
<a name="l00498"></a>00498
<a name="l00499"></a>00499 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gab34e1290cbeb5fe252642f3bd59f0a52" title="Use Allegro-compatible framebuffer.">AGL_ALLEGRO_FORMAT</a>)
<a name="l00500"></a>00500 ustrcat(buf, <span class="stringliteral">"allegro_format "</span>);
<a name="l00501"></a>00501 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gabe75eb7c907fedeef4763ad6c3ffd8f0" title="Select the red depth of the frame buffer.">AGL_RED_DEPTH</a>)
<a name="l00502"></a>00502 ustrcat(buf, <span class="stringliteral">"red_depth "</span>);
<a name="l00503"></a>00503 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gada8f8e9bb4e0ccf1bf7f7353d1e6032d" title="Select the green depth of the frame buffer.">AGL_GREEN_DEPTH</a>)
<a name="l00504"></a>00504 ustrcat(buf, <span class="stringliteral">"green_depth "</span>);
<a name="l00505"></a>00505 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga8efacc076a3d6523dd989211833c1ca8" title="Select the blue depth of the frame buffer.">AGL_BLUE_DEPTH</a>)
<a name="l00506"></a>00506 ustrcat(buf, <span class="stringliteral">"blue_depth "</span>);
<a name="l00507"></a>00507 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gad37b2a655ca53a34bb41bc629c8aa51e" title="Select the alpha depth of the frame buffer.">AGL_ALPHA_DEPTH</a>)
<a name="l00508"></a>00508 ustrcat(buf, <span class="stringliteral">"alpha_depth "</span>);
<a name="l00509"></a>00509 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5" title="Specify the total color depth of the frame buffer.">AGL_COLOR_DEPTH</a>)
<a name="l00510"></a>00510 ustrcat(buf, <span class="stringliteral">"color_depth "</span>);
<a name="l00511"></a>00511 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga317622005a4a2956a0d1659d3c47822a" title="Select the red depth of the accumulator buffer.">AGL_ACC_RED_DEPTH</a>)
<a name="l00512"></a>00512 ustrcat(buf, <span class="stringliteral">"accum_red_depth "</span>);
<a name="l00513"></a>00513 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga00f4cfb4cb19b60d677b6941fec903ba" title="Select the green depth of the accumulator buffer.">AGL_ACC_GREEN_DEPTH</a>)
<a name="l00514"></a>00514 ustrcat(buf, <span class="stringliteral">"accum_green_depth "</span>);
<a name="l00515"></a>00515 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gaf80c6da60114ac3962aabcfd8745b97e" title="Select the blue depth of the accumulator buffer.">AGL_ACC_BLUE_DEPTH</a>)
<a name="l00516"></a>00516 ustrcat(buf, <span class="stringliteral">"accum_blue_depth "</span>);
<a name="l00517"></a>00517 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gab8eba4f52cdb3d333b237c0ab0b3594a" title="Select the alpha depth of the accumulator buffer.">AGL_ACC_ALPHA_DEPTH</a>)
<a name="l00518"></a>00518 ustrcat(buf, <span class="stringliteral">"accum_alpha_depth "</span>);
<a name="l00519"></a>00519 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gaa1150ae35d6ff9b33d5771f29f9770dd" title="Creates a backbuffer if set.">AGL_DOUBLEBUFFER</a>)
<a name="l00520"></a>00520 ustrcat(buf, <span class="stringliteral">"double_buffer "</span>);
<a name="l00521"></a>00521 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga47be892718fa4b2c6166caf51da67489" title="Creates seperate left/right buffers for stereo display.">AGL_STEREO</a>)
<a name="l00522"></a>00522 ustrcat(buf, <span class="stringliteral">"stereo_display "</span>);
<a name="l00523"></a>00523 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga6267cbe7841d12c35d59032f66b7b871" title="Creates additional auxiliary buffers.">AGL_AUX_BUFFERS</a>)
<a name="l00524"></a>00524 ustrcat(buf, <span class="stringliteral">"aux_buffers "</span>);
<a name="l00525"></a>00525 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gabef24a727709a823e8fc900fdb72892e" title="Select the depth of the z-buffer.">AGL_Z_DEPTH</a>)
<a name="l00526"></a>00526 ustrcat(buf, <span class="stringliteral">"z_depth "</span>);
<a name="l00527"></a>00527 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga7b34772508e08edb0436e85d2d696fb9" title="Select the depth of the stencil buffer.">AGL_STENCIL_DEPTH</a>)
<a name="l00528"></a>00528 ustrcat(buf, <span class="stringliteral">"stencil_depth "</span>);
<a name="l00529"></a>00529 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gafea8132efd1fcac7a7f997ef0fe34cfa" title="Requests a placement of the window to a specified pixel location.">AGL_WINDOW_X</a>)
<a name="l00530"></a>00530 ustrcat(buf, <span class="stringliteral">"window_x "</span>);
<a name="l00531"></a>00531 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga80b7ef911d06ddee6d94d528cc6d914a" title="Same as AGL_WINDOW_X, but for the y-axis.">AGL_WINDOW_Y</a>)
<a name="l00532"></a>00532 ustrcat(buf, <span class="stringliteral">"window_y "</span>);
<a name="l00533"></a>00533 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga1baffefcedaffebf7ca47724a0441e60" title="Set if you&#39;d like a full screen mode.">AGL_FULLSCREEN</a>)
<a name="l00534"></a>00534 ustrcat(buf, <span class="stringliteral">"fullscreen "</span>);
<a name="l00535"></a>00535 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga6fcfd5d01183e704595b05fa9812b94f" title="Set if you&#39;d like a windowed mode.">AGL_WINDOWED</a>)
<a name="l00536"></a>00536 ustrcat(buf, <span class="stringliteral">"windowed "</span>);
<a name="l00537"></a>00537 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gab78a9c8ca24294b008d706a409c4fa37" title="Define AllegroGL&#39;s policy relative to video memory usage.">AGL_VIDEO_MEMORY_POLICY</a>)
<a name="l00538"></a>00538 ustrcat(buf, <span class="stringliteral">"video_memory_policy "</span>);
<a name="l00539"></a>00539 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gae1836cab58a366c122ace31160fe0e06" title="Define multisample parameters Some OpenGL ICDs expose an extension called GL_ARB_multisample which pr...">AGL_SAMPLE_BUFFERS</a>)
<a name="l00540"></a>00540 ustrcat(buf, <span class="stringliteral">"sample_buffers "</span>);
<a name="l00541"></a>00541 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga92d9751c38774297013087e89a25749d" title="Define multisample samples Set this value to the number of samples that can be accepted in the multis...">AGL_SAMPLES</a>)
<a name="l00542"></a>00542 ustrcat(buf, <span class="stringliteral">"samples "</span>);
<a name="l00543"></a>00543 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#gafeffd285319ab06291f90d03ff8b2482" title="Floating-point Color buffer.">AGL_FLOAT_COLOR</a>)
<a name="l00544"></a>00544 ustrcat(buf, <span class="stringliteral">"float_color "</span>);
<a name="l00545"></a>00545 <span class="keywordflow">if</span> (opt & <a class="code" href="group__settings.html#ga468710b6f682956d724f984ab7fa8e02" title="Floating-point Depth buffer.">AGL_FLOAT_Z</a>)
<a name="l00546"></a>00546 ustrcat(buf, <span class="stringliteral">"float_depth "</span>);
<a name="l00547"></a>00547
<a name="l00548"></a>00548 set_config_string(section, name, buf);
<a name="l00549"></a>00549 }
<a name="l00550"></a>00550
<a name="l00551"></a>00551
<a name="l00552"></a>00552
<a name="l00553"></a>00553 <span class="comment">/* void allegro_gl_save_settings() */</span>
<a name="l00560"></a><a class="code" href="group__settings.html#gaa461b9459f56c9274d2d49accf201ee1">00560</a> <span class="keywordtype">void</span> <a class="code" href="group__settings.html#gaa461b9459f56c9274d2d49accf201ee1" title="Saves the current settings (as specified by allegro_gl_set()) to the current config file...">allegro_gl_save_settings</a>() {
<a name="l00561"></a>00561
<a name="l00562"></a>00562 <span class="keywordtype">char</span> *section = <span class="stringliteral">"OpenGL"</span>;
<a name="l00563"></a>00563 <span class="keywordtype">int</span> save = <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(<a class="code" href="group__settings.html#ga839ae567340a64a97480e6abf1743b5f" title="Reject other values for these settings.">AGL_REQUIRE</a>) | <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(<a class="code" href="group__settings.html#ga5a1518fe9c1b44beb7f5bdcc42b6b8f1" title="Prefer the assigned values for these settings.">AGL_SUGGEST</a>);
<a name="l00564"></a>00564
<a name="l00565"></a>00565 <span class="keywordflow">if</span> (save & AGL_ALLEGRO_FORMAT)
<a name="l00566"></a>00566 set_config_int(section, <span class="stringliteral">"allegro_format"</span>,
<a name="l00567"></a>00567 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_ALLEGRO_FORMAT));
<a name="l00568"></a>00568 <span class="keywordflow">if</span> (save & AGL_RED_DEPTH)
<a name="l00569"></a>00569 set_config_int(section, <span class="stringliteral">"red_depth"</span>,
<a name="l00570"></a>00570 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_RED_DEPTH));
<a name="l00571"></a>00571 <span class="keywordflow">if</span> (save & AGL_GREEN_DEPTH)
<a name="l00572"></a>00572 set_config_int(section, <span class="stringliteral">"green_depth"</span>,
<a name="l00573"></a>00573 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_GREEN_DEPTH));
<a name="l00574"></a>00574 <span class="keywordflow">if</span> (save & AGL_BLUE_DEPTH)
<a name="l00575"></a>00575 set_config_int(section, <span class="stringliteral">"blue_depth"</span>,
<a name="l00576"></a>00576 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_BLUE_DEPTH));
<a name="l00577"></a>00577 <span class="keywordflow">if</span> (save & AGL_ALPHA_DEPTH)
<a name="l00578"></a>00578 set_config_int(section, <span class="stringliteral">"alpha_depth"</span>,
<a name="l00579"></a>00579 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_ALPHA_DEPTH));
<a name="l00580"></a>00580 <span class="keywordflow">if</span> (save & AGL_COLOR_DEPTH)
<a name="l00581"></a>00581 set_config_int(section, <span class="stringliteral">"color_depth"</span>,
<a name="l00582"></a>00582 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_COLOR_DEPTH));
<a name="l00583"></a>00583 <span class="keywordflow">if</span> (save & AGL_ACC_RED_DEPTH)
<a name="l00584"></a>00584 set_config_int(section, <span class="stringliteral">"accum_red_depth"</span>,
<a name="l00585"></a>00585 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_ACC_RED_DEPTH));
<a name="l00586"></a>00586 <span class="keywordflow">if</span> (save & AGL_ACC_GREEN_DEPTH)
<a name="l00587"></a>00587 set_config_int(section, <span class="stringliteral">"accum_green_depth"</span>,
<a name="l00588"></a>00588 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_ACC_GREEN_DEPTH));
<a name="l00589"></a>00589 <span class="keywordflow">if</span> (save & AGL_ACC_BLUE_DEPTH)
<a name="l00590"></a>00590 set_config_int(section, <span class="stringliteral">"accum_blue_depth"</span>,
<a name="l00591"></a>00591 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_ACC_BLUE_DEPTH));
<a name="l00592"></a>00592 <span class="keywordflow">if</span> (save & AGL_ACC_ALPHA_DEPTH)
<a name="l00593"></a>00593 set_config_int(section, <span class="stringliteral">"accum_alpha_depth"</span>,
<a name="l00594"></a>00594 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_ACC_ALPHA_DEPTH));
<a name="l00595"></a>00595 <span class="keywordflow">if</span> (save & AGL_DOUBLEBUFFER)
<a name="l00596"></a>00596 set_config_int(section, <span class="stringliteral">"double_buffer"</span>,
<a name="l00597"></a>00597 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_DOUBLEBUFFER));
<a name="l00598"></a>00598 <span class="keywordflow">if</span> (save & AGL_STEREO)
<a name="l00599"></a>00599 set_config_int(section, <span class="stringliteral">"stereo_display"</span>,
<a name="l00600"></a>00600 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_STEREO));
<a name="l00601"></a>00601 <span class="keywordflow">if</span> (save & AGL_AUX_BUFFERS)
<a name="l00602"></a>00602 set_config_int(section, <span class="stringliteral">"aux_buffers"</span>,
<a name="l00603"></a>00603 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_AUX_BUFFERS));
<a name="l00604"></a>00604 <span class="keywordflow">if</span> (save & AGL_Z_DEPTH)
<a name="l00605"></a>00605 set_config_int(section, <span class="stringliteral">"z_depth"</span>,
<a name="l00606"></a>00606 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_Z_DEPTH));
<a name="l00607"></a>00607 <span class="keywordflow">if</span> (save & AGL_STENCIL_DEPTH)
<a name="l00608"></a>00608 set_config_int(section, <span class="stringliteral">"stencil_depth"</span>,
<a name="l00609"></a>00609 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_STENCIL_DEPTH));
<a name="l00610"></a>00610 <span class="keywordflow">if</span> (save & AGL_WINDOW_X)
<a name="l00611"></a>00611 set_config_int(section, <span class="stringliteral">"window_x"</span>,
<a name="l00612"></a>00612 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_WINDOW_X));
<a name="l00613"></a>00613 <span class="keywordflow">if</span> (save & AGL_WINDOW_Y)
<a name="l00614"></a>00614 set_config_int(section, <span class="stringliteral">"window_y"</span>,
<a name="l00615"></a>00615 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_WINDOW_Y));
<a name="l00616"></a>00616 <span class="keywordflow">if</span> (save & AGL_FULLSCREEN)
<a name="l00617"></a>00617 set_config_int(section, <span class="stringliteral">"fullscreen"</span>,
<a name="l00618"></a>00618 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_FULLSCREEN));
<a name="l00619"></a>00619 <span class="keywordflow">if</span> (save & AGL_WINDOWED)
<a name="l00620"></a>00620 set_config_int(section, <span class="stringliteral">"windowed"</span>,
<a name="l00621"></a>00621 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_WINDOWED));
<a name="l00622"></a>00622 <span class="keywordflow">if</span> (save & AGL_VIDEO_MEMORY_POLICY)
<a name="l00623"></a>00623 set_config_int(section, <span class="stringliteral">"video_memory_policy"</span>,
<a name="l00624"></a>00624 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_VIDEO_MEMORY_POLICY));
<a name="l00625"></a>00625 <span class="keywordflow">if</span> (save & AGL_SAMPLE_BUFFERS)
<a name="l00626"></a>00626 set_config_int(section, <span class="stringliteral">"sample_buffers"</span>,
<a name="l00627"></a>00627 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_SAMPLE_BUFFERS));
<a name="l00628"></a>00628 <span class="keywordflow">if</span> (save & AGL_SAMPLES)
<a name="l00629"></a>00629 set_config_int(section, <span class="stringliteral">"samples"</span>,
<a name="l00630"></a>00630 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_SAMPLES));
<a name="l00631"></a>00631 <span class="keywordflow">if</span> (save & AGL_FLOAT_COLOR)
<a name="l00632"></a>00632 set_config_int(section, <span class="stringliteral">"float_color"</span>,
<a name="l00633"></a>00633 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_FLOAT_COLOR));
<a name="l00634"></a>00634 <span class="keywordflow">if</span> (save & <a class="code" href="group__settings.html#ga468710b6f682956d724f984ab7fa8e02" title="Floating-point Depth buffer.">AGL_FLOAT_Z</a>)
<a name="l00635"></a>00635 set_config_int(section, <span class="stringliteral">"float_depth"</span>,
<a name="l00636"></a>00636 <a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_FLOAT_Z));
<a name="l00637"></a>00637
<a name="l00638"></a>00638 <span class="keywordflow">if</span> (save & <a class="code" href="group__settings.html#ga839ae567340a64a97480e6abf1743b5f" title="Reject other values for these settings.">AGL_REQUIRE</a>)
<a name="l00639"></a>00639 build_settings(<a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_REQUIRE), section, <span class="stringliteral">"require"</span>);
<a name="l00640"></a>00640 <span class="keywordflow">if</span> (save & <a class="code" href="group__settings.html#ga5a1518fe9c1b44beb7f5bdcc42b6b8f1" title="Prefer the assigned values for these settings.">AGL_SUGGEST</a>)
<a name="l00641"></a>00641 build_settings(<a class="code" href="group__settings.html#ga2179291ddb3cb528c3c0cf84af5c51a9" title="Reads the setting of a configuration option.">allegro_gl_get</a>(AGL_SUGGEST), section, <span class="stringliteral">"suggest"</span>);
<a name="l00642"></a>00642 }
<a name="l00643"></a>00643
<a name="l00644"></a>00644
<a name="l00645"></a>00645
<a name="l00646"></a>00646 <span class="comment">/* Parses an input string to read settings */</span>
<a name="l00647"></a>00647 <span class="keyword">static</span> <span class="keywordtype">void</span> agl_parse_section(<span class="keywordtype">int</span> sec, <span class="keywordtype">char</span> *section, <span class="keywordtype">char</span> *name) {
<a name="l00648"></a>00648 <span class="keyword">const</span> <span class="keywordtype">char</span> *end;
<a name="l00649"></a>00649 <span class="keywordtype">char</span> *buf;
<a name="l00650"></a>00650 <span class="keywordtype">char</span> *ptr;
<a name="l00651"></a>00651 <span class="keywordtype">int</span> strsize;
<a name="l00652"></a>00652 <span class="keywordtype">int</span> opt = 0;
<a name="l00653"></a>00653
<a name="l00654"></a>00654 end = get_config_string(section, name, <span class="stringliteral">""</span>);
<a name="l00655"></a>00655 strsize = ustrsizez(end);
<a name="l00656"></a>00656
<a name="l00657"></a>00657 buf = (<span class="keywordtype">char</span>*)malloc(<span class="keyword">sizeof</span>(<span class="keywordtype">char</span>) * strsize);
<a name="l00658"></a>00658
<a name="l00659"></a>00659 <span class="keywordflow">if</span> (!buf) {
<a name="l00660"></a>00660 TRACE(PREFIX_E <span class="stringliteral">"parse_section: Ran out of memory "</span>
<a name="l00661"></a>00661 <span class="stringliteral">"while trying to allocate %i bytes!"</span>,
<a name="l00662"></a>00662 (<span class="keywordtype">int</span>)<span class="keyword">sizeof</span>(<span class="keywordtype">char</span>) * strsize);
<a name="l00663"></a>00663 <span class="keywordflow">return</span>;
<a name="l00664"></a>00664 }
<a name="l00665"></a>00665
<a name="l00666"></a>00666 memcpy(buf, end, strsize);
<a name="l00667"></a>00667 end = buf + strsize;
<a name="l00668"></a>00668 ptr = buf;
<a name="l00669"></a>00669
<a name="l00670"></a>00670 <span class="keywordflow">while</span> (ptr < end) {
<a name="l00671"></a>00671 <span class="keywordtype">char</span> *s = ustrtok_r(ptr, <span class="stringliteral">" ;|+"</span>, &ptr);
<a name="l00672"></a>00672
<a name="l00673"></a>00673 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"allegro_format"</span>))
<a name="l00674"></a>00674 opt |= <a class="code" href="group__settings.html#gab34e1290cbeb5fe252642f3bd59f0a52" title="Use Allegro-compatible framebuffer.">AGL_ALLEGRO_FORMAT</a>;
<a name="l00675"></a>00675 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"red_depth"</span>))
<a name="l00676"></a>00676 opt |= <a class="code" href="group__settings.html#gabe75eb7c907fedeef4763ad6c3ffd8f0" title="Select the red depth of the frame buffer.">AGL_RED_DEPTH</a>;
<a name="l00677"></a>00677 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"green_depth"</span>))
<a name="l00678"></a>00678 opt |= <a class="code" href="group__settings.html#gada8f8e9bb4e0ccf1bf7f7353d1e6032d" title="Select the green depth of the frame buffer.">AGL_GREEN_DEPTH</a>;
<a name="l00679"></a>00679 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"blue_depth"</span>))
<a name="l00680"></a>00680 opt |= <a class="code" href="group__settings.html#ga8efacc076a3d6523dd989211833c1ca8" title="Select the blue depth of the frame buffer.">AGL_BLUE_DEPTH</a>;
<a name="l00681"></a>00681 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"alpha_depth"</span>))
<a name="l00682"></a>00682 opt |= <a class="code" href="group__settings.html#gad37b2a655ca53a34bb41bc629c8aa51e" title="Select the alpha depth of the frame buffer.">AGL_ALPHA_DEPTH</a>;
<a name="l00683"></a>00683 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"color_depth"</span>))
<a name="l00684"></a>00684 opt |= <a class="code" href="group__settings.html#ga71846e567336fe02f8f063af1282ddc5" title="Specify the total color depth of the frame buffer.">AGL_COLOR_DEPTH</a>;
<a name="l00685"></a>00685 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"accum_red_depth"</span>))
<a name="l00686"></a>00686 opt |= <a class="code" href="group__settings.html#ga317622005a4a2956a0d1659d3c47822a" title="Select the red depth of the accumulator buffer.">AGL_ACC_RED_DEPTH</a>;
<a name="l00687"></a>00687 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"accum_green_depth"</span>))
<a name="l00688"></a>00688 opt |= <a class="code" href="group__settings.html#ga00f4cfb4cb19b60d677b6941fec903ba" title="Select the green depth of the accumulator buffer.">AGL_ACC_GREEN_DEPTH</a>;
<a name="l00689"></a>00689 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"accum_blue_depth"</span>))
<a name="l00690"></a>00690 opt |= <a class="code" href="group__settings.html#gaf80c6da60114ac3962aabcfd8745b97e" title="Select the blue depth of the accumulator buffer.">AGL_ACC_BLUE_DEPTH</a>;
<a name="l00691"></a>00691 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"accum_alpha_depth"</span>))
<a name="l00692"></a>00692 opt |= <a class="code" href="group__settings.html#gab8eba4f52cdb3d333b237c0ab0b3594a" title="Select the alpha depth of the accumulator buffer.">AGL_ACC_ALPHA_DEPTH</a>;
<a name="l00693"></a>00693 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"double_buffer"</span>))
<a name="l00694"></a>00694 opt |= <a class="code" href="group__settings.html#gaa1150ae35d6ff9b33d5771f29f9770dd" title="Creates a backbuffer if set.">AGL_DOUBLEBUFFER</a>;
<a name="l00695"></a>00695 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"stereo_display"</span>))
<a name="l00696"></a>00696 opt |= <a class="code" href="group__settings.html#ga47be892718fa4b2c6166caf51da67489" title="Creates seperate left/right buffers for stereo display.">AGL_STEREO</a>;
<a name="l00697"></a>00697 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"aux_buffers"</span>))
<a name="l00698"></a>00698 opt |= <a class="code" href="group__settings.html#ga6267cbe7841d12c35d59032f66b7b871" title="Creates additional auxiliary buffers.">AGL_AUX_BUFFERS</a>;
<a name="l00699"></a>00699 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"z_depth"</span>))
<a name="l00700"></a>00700 opt |= <a class="code" href="group__settings.html#gabef24a727709a823e8fc900fdb72892e" title="Select the depth of the z-buffer.">AGL_Z_DEPTH</a>;
<a name="l00701"></a>00701 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"stencil_depth"</span>))
<a name="l00702"></a>00702 opt |= <a class="code" href="group__settings.html#ga7b34772508e08edb0436e85d2d696fb9" title="Select the depth of the stencil buffer.">AGL_STENCIL_DEPTH</a>;
<a name="l00703"></a>00703 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"window_x"</span>))
<a name="l00704"></a>00704 opt |= <a class="code" href="group__settings.html#gafea8132efd1fcac7a7f997ef0fe34cfa" title="Requests a placement of the window to a specified pixel location.">AGL_WINDOW_X</a>;
<a name="l00705"></a>00705 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"window_y"</span>))
<a name="l00706"></a>00706 opt |= <a class="code" href="group__settings.html#ga80b7ef911d06ddee6d94d528cc6d914a" title="Same as AGL_WINDOW_X, but for the y-axis.">AGL_WINDOW_Y</a>;
<a name="l00707"></a>00707 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"fullscreen"</span>))
<a name="l00708"></a>00708 opt |= <a class="code" href="group__settings.html#ga1baffefcedaffebf7ca47724a0441e60" title="Set if you&#39;d like a full screen mode.">AGL_FULLSCREEN</a>;
<a name="l00709"></a>00709 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"windowed"</span>))
<a name="l00710"></a>00710 opt |= <a class="code" href="group__settings.html#ga6fcfd5d01183e704595b05fa9812b94f" title="Set if you&#39;d like a windowed mode.">AGL_WINDOWED</a>;
<a name="l00711"></a>00711 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"video_memory_policy"</span>))
<a name="l00712"></a>00712 opt |= <a class="code" href="group__settings.html#gab78a9c8ca24294b008d706a409c4fa37" title="Define AllegroGL&#39;s policy relative to video memory usage.">AGL_VIDEO_MEMORY_POLICY</a>;
<a name="l00713"></a>00713 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"sample_buffers"</span>))
<a name="l00714"></a>00714 opt |= <a class="code" href="group__settings.html#gae1836cab58a366c122ace31160fe0e06" title="Define multisample parameters Some OpenGL ICDs expose an extension called GL_ARB_multisample which pr...">AGL_SAMPLE_BUFFERS</a>;
<a name="l00715"></a>00715 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"samples"</span>))
<a name="l00716"></a>00716 opt |= <a class="code" href="group__settings.html#ga92d9751c38774297013087e89a25749d" title="Define multisample samples Set this value to the number of samples that can be accepted in the multis...">AGL_SAMPLES</a>;
<a name="l00717"></a>00717 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"float_color"</span>))
<a name="l00718"></a>00718 opt |= <a class="code" href="group__settings.html#gafeffd285319ab06291f90d03ff8b2482" title="Floating-point Color buffer.">AGL_FLOAT_COLOR</a>;
<a name="l00719"></a>00719 <span class="keywordflow">if</span> (!ustrcmp(s, <span class="stringliteral">"float_depth"</span>))
<a name="l00720"></a>00720 opt |= <a class="code" href="group__settings.html#ga468710b6f682956d724f984ab7fa8e02" title="Floating-point Depth buffer.">AGL_FLOAT_Z</a>;
<a name="l00721"></a>00721 }
<a name="l00722"></a>00722
<a name="l00723"></a>00723 free(buf);
<a name="l00724"></a>00724
<a name="l00725"></a>00725 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(sec, opt);
<a name="l00726"></a>00726 }
<a name="l00727"></a>00727
<a name="l00728"></a>00728
<a name="l00729"></a>00729
<a name="l00730"></a>00730 <span class="comment">/* void allegro_gl_load_settings() */</span>
<a name="l00741"></a><a class="code" href="group__settings.html#ga60a577d2fed019cdae83c648f1ff74ec">00741</a> <span class="keywordtype">void</span> <a class="code" href="group__settings.html#ga60a577d2fed019cdae83c648f1ff74ec" title="Loads the settings from the current config file, in the section [OpenGL].">allegro_gl_load_settings</a>() {
<a name="l00742"></a>00742
<a name="l00743"></a>00743 <span class="keywordtype">int</span> <span class="keyword">set</span>;
<a name="l00744"></a>00744 <span class="keywordtype">char</span> *section = <span class="stringliteral">"OpenGL"</span>;
<a name="l00745"></a>00745
<a name="l00746"></a>00746 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"allegro_format"</span>, -1);
<a name="l00747"></a>00747 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00748"></a>00748 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_ALLEGRO_FORMAT, <span class="keyword">set</span>);
<a name="l00749"></a>00749 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"red_depth"</span>, -1);
<a name="l00750"></a>00750 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00751"></a>00751 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_RED_DEPTH, <span class="keyword">set</span>);
<a name="l00752"></a>00752 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"green_depth"</span>, -1);
<a name="l00753"></a>00753 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00754"></a>00754 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_GREEN_DEPTH, <span class="keyword">set</span>);
<a name="l00755"></a>00755 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"blue_depth"</span>, -1);
<a name="l00756"></a>00756 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00757"></a>00757 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_BLUE_DEPTH, <span class="keyword">set</span>);
<a name="l00758"></a>00758 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"alpha_depth"</span>, -1);
<a name="l00759"></a>00759 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00760"></a>00760 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_ALPHA_DEPTH, <span class="keyword">set</span>);
<a name="l00761"></a>00761 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"color_depth"</span>, -1);
<a name="l00762"></a>00762 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00763"></a>00763 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_COLOR_DEPTH, <span class="keyword">set</span>);
<a name="l00764"></a>00764 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"accum_red_depth"</span>, -1);
<a name="l00765"></a>00765 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00766"></a>00766 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_ACC_RED_DEPTH, <span class="keyword">set</span>);
<a name="l00767"></a>00767 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"accum_green_depth"</span>, -1);
<a name="l00768"></a>00768 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00769"></a>00769 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_ACC_GREEN_DEPTH, <span class="keyword">set</span>);
<a name="l00770"></a>00770 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"accum_blue_depth"</span>, -1);
<a name="l00771"></a>00771 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00772"></a>00772 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_ACC_BLUE_DEPTH, <span class="keyword">set</span>);
<a name="l00773"></a>00773 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"accum_alpha_depth"</span>, -1);
<a name="l00774"></a>00774 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00775"></a>00775 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_ACC_ALPHA_DEPTH, <span class="keyword">set</span>);
<a name="l00776"></a>00776 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"double_buffer"</span>, -1);
<a name="l00777"></a>00777 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00778"></a>00778 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_DOUBLEBUFFER, <span class="keyword">set</span>);
<a name="l00779"></a>00779 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"stereo_display"</span>, -1);
<a name="l00780"></a>00780 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00781"></a>00781 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_STEREO, <span class="keyword">set</span>);
<a name="l00782"></a>00782 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"aux_buffers"</span>, -1);
<a name="l00783"></a>00783 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00784"></a>00784 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_AUX_BUFFERS, <span class="keyword">set</span>);
<a name="l00785"></a>00785 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"z_depth"</span>, -1);
<a name="l00786"></a>00786 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00787"></a>00787 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_Z_DEPTH, <span class="keyword">set</span>);
<a name="l00788"></a>00788 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"stencil_depth"</span>, -1);
<a name="l00789"></a>00789 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00790"></a>00790 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_STENCIL_DEPTH, <span class="keyword">set</span>);
<a name="l00791"></a>00791 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"window_x"</span>, -1);
<a name="l00792"></a>00792 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00793"></a>00793 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_WINDOW_X, <span class="keyword">set</span>);
<a name="l00794"></a>00794 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"window_y"</span>, -1);
<a name="l00795"></a>00795 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00796"></a>00796 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_WINDOW_Y, <span class="keyword">set</span>);
<a name="l00797"></a>00797 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"fullscreen"</span>, -1);
<a name="l00798"></a>00798 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00799"></a>00799 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_FULLSCREEN, <span class="keyword">set</span>);
<a name="l00800"></a>00800 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"windowed"</span>, -1);
<a name="l00801"></a>00801 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00802"></a>00802 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_WINDOWED, <span class="keyword">set</span>);
<a name="l00803"></a>00803 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"video_memory_policy"</span>, -1);
<a name="l00804"></a>00804 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00805"></a>00805 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_VIDEO_MEMORY_POLICY, <span class="keyword">set</span>);
<a name="l00806"></a>00806 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"sample_buffers"</span>, -1);
<a name="l00807"></a>00807 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00808"></a>00808 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_SAMPLE_BUFFERS, <span class="keyword">set</span>);
<a name="l00809"></a>00809 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"samples"</span>, -1);
<a name="l00810"></a>00810 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00811"></a>00811 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_SAMPLES, <span class="keyword">set</span>);
<a name="l00812"></a>00812 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"float_color"</span>, -1);
<a name="l00813"></a>00813 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00814"></a>00814 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(AGL_FLOAT_COLOR, <span class="keyword">set</span>);
<a name="l00815"></a>00815 <span class="keyword">set</span> = get_config_int(section, <span class="stringliteral">"float_depth"</span>, -1);
<a name="l00816"></a>00816 <span class="keywordflow">if</span> (<span class="keyword">set</span> != -1)
<a name="l00817"></a>00817 <a class="code" href="group__settings.html#ga025e79a4394803a0e15aaf07b1a8a656" title="Sets a configuration option.">allegro_gl_set</a>(<a class="code" href="group__settings.html#ga468710b6f682956d724f984ab7fa8e02" title="Floating-point Depth buffer.">AGL_FLOAT_Z</a>, <span class="keyword">set</span>);
<a name="l00818"></a>00818
<a name="l00819"></a>00819 agl_parse_section(<a class="code" href="group__settings.html#ga839ae567340a64a97480e6abf1743b5f" title="Reject other values for these settings.">AGL_REQUIRE</a>, section, <span class="stringliteral">"require"</span>);
<a name="l00820"></a>00820 agl_parse_section(<a class="code" href="group__settings.html#ga5a1518fe9c1b44beb7f5bdcc42b6b8f1" title="Prefer the assigned values for these settings.">AGL_SUGGEST</a>, section, <span class="stringliteral">"suggest"</span>);
<a name="l00821"></a>00821 }
<a name="l00822"></a>00822
<a name="l00823"></a>00823
<a name="l00824"></a>00824
<a name="l00825"></a>00825 <span class="comment">/* int install_allegro_gl(void) */</span>
<a name="l00836"></a><a class="code" href="group__core.html#gaa0cbb82fa1e2bae6788eb7bd06673bd3">00836</a> <span class="keywordtype">int</span> <a class="code" href="group__core.html#gaa0cbb82fa1e2bae6788eb7bd06673bd3" title="Installs the AllegroGL addon to Allegro.">install_allegro_gl</a>(<span class="keywordtype">void</span>)
<a name="l00837"></a>00837 {
<a name="l00838"></a>00838 <span class="keywordflow">if</span> (!system_driver)
<a name="l00839"></a>00839 <span class="keywordflow">return</span> -1;
<a name="l00840"></a>00840
<a name="l00841"></a>00841 <span class="keywordflow">if</span> (atexit(<a class="code" href="group__core.html#gaeff6abbb1d1071a01f4cd694ef504298" title="Removes the AllegroGL addon.">remove_allegro_gl</a>))
<a name="l00842"></a>00842 <span class="keywordflow">return</span> -1;
<a name="l00843"></a>00843
<a name="l00844"></a>00844 <span class="keywordflow">if</span> (system_driver->gfx_drivers)
<a name="l00845"></a>00845 saved_gfx_drivers = system_driver->gfx_drivers;
<a name="l00846"></a>00846 <span class="keywordflow">else</span>
<a name="l00847"></a>00847 saved_gfx_drivers = list_saved_gfx_drivers;
<a name="l00848"></a>00848
<a name="l00849"></a>00849 system_driver->gfx_drivers = our_gfx_drivers;
<a name="l00850"></a>00850
<a name="l00851"></a>00851 <a class="code" href="group__settings.html#gadd1249980001c22cb3eba880561a7e19" title="Clear the option settings All settings are set to their default values, and marked as neither suggest...">allegro_gl_clear_settings</a>();
<a name="l00852"></a>00852
<a name="l00853"></a>00853 <span class="comment">/* Save and replace old blit_between_formats methods */</span>
<a name="l00854"></a>00854 <span class="preprocessor">#ifdef ALLEGRO_COLOR8</span>
<a name="l00855"></a>00855 <span class="preprocessor"></span> __blit_between_formats8 = __linear_vtable8.blit_between_formats;
<a name="l00856"></a>00856 __linear_vtable8.blit_between_formats =
<a name="l00857"></a>00857 allegro_gl_memory_blit_between_formats;
<a name="l00858"></a>00858 <span class="preprocessor">#endif</span>
<a name="l00859"></a>00859 <span class="preprocessor"></span><span class="preprocessor">#ifdef ALLEGRO_COLOR16</span>
<a name="l00860"></a>00860 <span class="preprocessor"></span> __blit_between_formats15 = __linear_vtable15.blit_between_formats;
<a name="l00861"></a>00861 __linear_vtable15.blit_between_formats =
<a name="l00862"></a>00862 allegro_gl_memory_blit_between_formats;
<a name="l00863"></a>00863 __blit_between_formats16 = __linear_vtable16.blit_between_formats;
<a name="l00864"></a>00864 __linear_vtable16.blit_between_formats
<a name="l00865"></a>00865 = allegro_gl_memory_blit_between_formats;
<a name="l00866"></a>00866 <span class="preprocessor">#endif</span>
<a name="l00867"></a>00867 <span class="preprocessor"></span><span class="preprocessor">#ifdef ALLEGRO_COLOR24</span>
<a name="l00868"></a>00868 <span class="preprocessor"></span> __blit_between_formats24 = __linear_vtable24.blit_between_formats;
<a name="l00869"></a>00869 __linear_vtable24.blit_between_formats
<a name="l00870"></a>00870 = allegro_gl_memory_blit_between_formats;
<a name="l00871"></a>00871 <span class="preprocessor">#endif</span>
<a name="l00872"></a>00872 <span class="preprocessor"></span><span class="preprocessor">#ifdef ALLEGRO_COLOR32</span>
<a name="l00873"></a>00873 <span class="preprocessor"></span> __blit_between_formats32 = __linear_vtable32.blit_between_formats;
<a name="l00874"></a>00874 __linear_vtable32.blit_between_formats
<a name="l00875"></a>00875 = allegro_gl_memory_blit_between_formats;
<a name="l00876"></a>00876 <span class="preprocessor">#endif</span>
<a name="l00877"></a>00877 <span class="preprocessor"></span>
<a name="l00878"></a>00878 usetc(allegro_gl_error, 0);
<a name="l00879"></a>00879
<a name="l00880"></a>00880 <span class="keywordflow">return</span> 0;
<a name="l00881"></a>00881 }
<a name="l00882"></a>00882
<a name="l00883"></a>00883
<a name="l00884"></a>00884
<a name="l00885"></a>00885 <span class="comment">/* void remove_allegro_gl(void) */</span>
<a name="l00894"></a><a class="code" href="group__core.html#gaeff6abbb1d1071a01f4cd694ef504298">00894</a> <span class="keywordtype">void</span> <a class="code" href="group__core.html#gaeff6abbb1d1071a01f4cd694ef504298" title="Removes the AllegroGL addon.">remove_allegro_gl</a>(<span class="keywordtype">void</span>)
<a name="l00895"></a>00895 {
<a name="l00896"></a>00896 <span class="keywordflow">if</span> ((!system_driver) || (!saved_gfx_drivers))
<a name="l00897"></a>00897 <span class="keywordflow">return</span>;
<a name="l00898"></a>00898
<a name="l00899"></a>00899 <span class="keywordflow">if</span> (saved_gfx_drivers == &list_saved_gfx_drivers)
<a name="l00900"></a>00900 system_driver->gfx_drivers = NULL;
<a name="l00901"></a>00901 <span class="keywordflow">else</span>
<a name="l00902"></a>00902 system_driver->gfx_drivers = saved_gfx_drivers;
<a name="l00903"></a>00903
<a name="l00904"></a>00904 <span class="comment">/* This function may be called twice (once by a user explicit call</span>
<a name="l00905"></a>00905 <span class="comment"> * and once again at exit since the function is registered with at_exit)</span>
<a name="l00906"></a>00906 <span class="comment"> * In order to prevent crashes, 'saved_gfx_drivers' is set to NULL</span>
<a name="l00907"></a>00907 <span class="comment"> */</span>
<a name="l00908"></a>00908 saved_gfx_drivers = NULL;
<a name="l00909"></a>00909
<a name="l00910"></a>00910 <span class="comment">/* Restore the blit_between_formats methods */</span>
<a name="l00911"></a>00911 <span class="preprocessor"> #ifdef ALLEGRO_COLOR8</span>
<a name="l00912"></a>00912 <span class="preprocessor"></span> __linear_vtable8.blit_between_formats = __blit_between_formats8;
<a name="l00913"></a>00913 <span class="preprocessor"> #endif</span>
<a name="l00914"></a>00914 <span class="preprocessor"></span><span class="preprocessor"> #ifdef ALLEGRO_COLOR16</span>
<a name="l00915"></a>00915 <span class="preprocessor"></span> __linear_vtable15.blit_between_formats = __blit_between_formats15;
<a name="l00916"></a>00916 __linear_vtable16.blit_between_formats = __blit_between_formats16;
<a name="l00917"></a>00917 <span class="preprocessor"> #endif</span>
<a name="l00918"></a>00918 <span class="preprocessor"></span><span class="preprocessor"> #ifdef ALLEGRO_COLOR24</span>
<a name="l00919"></a>00919 <span class="preprocessor"></span> __linear_vtable24.blit_between_formats = __blit_between_formats24;
<a name="l00920"></a>00920 <span class="preprocessor"> #endif</span>
<a name="l00921"></a>00921 <span class="preprocessor"></span><span class="preprocessor"> #ifdef ALLEGRO_COLOR32</span>
<a name="l00922"></a>00922 <span class="preprocessor"></span> __linear_vtable32.blit_between_formats = __blit_between_formats32;
<a name="l00923"></a>00923 <span class="preprocessor"> #endif</span>
<a name="l00924"></a>00924 <span class="preprocessor"></span>}
<a name="l00925"></a>00925
<a name="l00926"></a>00926
<a name="l00927"></a>00927
<a name="l00928"></a>00928 <span class="comment">/* void allegro_gl_flip(void) */</span>
<a name="l00951"></a><a class="code" href="group__core.html#gaf5aad043e99b766393fa4a7ec034a0f1">00951</a> <span class="keywordtype">void</span> <a class="code" href="group__core.html#gaf5aad043e99b766393fa4a7ec034a0f1" title="Flips the front and back framebuffers.">allegro_gl_flip</a>(<span class="keywordtype">void</span>)
<a name="l00952"></a>00952 {
<a name="l00953"></a>00953 __allegro_gl_driver->flip();
<a name="l00954"></a>00954 }
<a name="l00955"></a>00955
<a name="l00956"></a>00956
<a name="l00957"></a>00957
<a name="l00958"></a>00958 <span class="comment">/* float allegro_gl_opengl_version() */</span>
<a name="l00971"></a><a class="code" href="group__core.html#ga444d507eaeb5ba800787f6a81827615d">00971</a> <span class="keywordtype">float</span> <a class="code" href="group__core.html#ga444d507eaeb5ba800787f6a81827615d" title="Returns the OpenGL version number of the client (the computer the program is running on)...">allegro_gl_opengl_version</a>() {
<a name="l00972"></a>00972
<a name="l00973"></a>00973 <span class="keyword">const</span> <span class="keywordtype">char</span> *str;
<a name="l00974"></a>00974
<a name="l00975"></a>00975 <span class="keywordflow">if</span> (!__allegro_gl_valid_context)
<a name="l00976"></a>00976 <span class="keywordflow">return</span> 0.0f;
<a name="l00977"></a>00977
<a name="l00978"></a>00978 str = (<span class="keyword">const</span> <span class="keywordtype">char</span>*)glGetString(GL_VERSION);
<a name="l00979"></a>00979
<a name="l00980"></a>00980 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"1.0 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"1.0.0 "</span>, 6) == 0))
<a name="l00981"></a>00981 <span class="keywordflow">return</span> 1.0;
<a name="l00982"></a>00982 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"1.1 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"1.1.0 "</span>, 6) == 0))
<a name="l00983"></a>00983 <span class="keywordflow">return</span> 1.1;
<a name="l00984"></a>00984 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"1.2 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"1.2.0 "</span>, 6) == 0))
<a name="l00985"></a>00985 <span class="keywordflow">return</span> 1.2;
<a name="l00986"></a>00986 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"1.2.1 "</span>, 6) == 0))
<a name="l00987"></a>00987 <span class="keywordflow">return</span> 1.21;
<a name="l00988"></a>00988 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"1.2.2 "</span>, 6) == 0))
<a name="l00989"></a>00989 <span class="keywordflow">return</span> 1.22;
<a name="l00990"></a>00990 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"1.3 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"1.3.0 "</span>, 6) == 0))
<a name="l00991"></a>00991 <span class="keywordflow">return</span> 1.3;
<a name="l00992"></a>00992 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"1.4 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"1.4.0 "</span>, 6) == 0))
<a name="l00993"></a>00993 <span class="keywordflow">return</span> 1.4;
<a name="l00994"></a>00994 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"1.5 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"1.5.0 "</span>, 6) == 0))
<a name="l00995"></a>00995 <span class="keywordflow">return</span> 1.5;
<a name="l00996"></a>00996 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"2.0 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"2.0.0 "</span>, 6) == 0))
<a name="l00997"></a>00997 <span class="keywordflow">return</span> 2.0;
<a name="l00998"></a>00998 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"2.1 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"2.1.0 "</span>, 6) == 0))
<a name="l00999"></a>00999 <span class="keywordflow">return</span> 2.1;
<a name="l01000"></a>01000 <span class="keywordflow">if</span> ((strncmp(str, <span class="stringliteral">"3.0 "</span>, 4) == 0) || (strncmp(str, <span class="stringliteral">"3.0.0 "</span>, 6) == 0))
<a name="l01001"></a>01001 <span class="keywordflow">return</span> 3.0;
<a name="l01002"></a>01002
<a name="l01003"></a>01003 <span class="comment">/* The OpenGL driver does not return a version</span>
<a name="l01004"></a>01004 <span class="comment"> * number. However it probably supports at least OpenGL 1.0</span>
<a name="l01005"></a>01005 <span class="comment"> */</span>
<a name="l01006"></a>01006 <span class="keywordflow">if</span> (!str) {
<a name="l01007"></a>01007 <span class="keywordflow">return</span> 1.0;
<a name="l01008"></a>01008 }
<a name="l01009"></a>01009
<a name="l01010"></a>01010 <span class="keywordflow">return</span> atof(str);
<a name="l01011"></a>01011 }
<a name="l01012"></a>01012
<a name="l01013"></a>01013
<a name="l01014"></a>01014
<a name="l01015"></a>01015 <span class="keywordtype">void</span> __allegro_gl_set_allegro_image_format(<span class="keywordtype">int</span> big_endian)
<a name="l01016"></a>01016 {
<a name="l01017"></a>01017 <span class="comment">/* Sets up Allegro to use OpenGL formats */</span>
<a name="l01018"></a>01018 _rgb_r_shift_15 = 11;
<a name="l01019"></a>01019 _rgb_g_shift_15 = 6;
<a name="l01020"></a>01020 _rgb_b_shift_15 = 1;
<a name="l01021"></a>01021
<a name="l01022"></a>01022 _rgb_r_shift_16 = 11;
<a name="l01023"></a>01023 _rgb_g_shift_16 = 5;
<a name="l01024"></a>01024 _rgb_b_shift_16 = 0;
<a name="l01025"></a>01025
<a name="l01026"></a>01026 <span class="keywordflow">if</span> (big_endian) {
<a name="l01027"></a>01027 _rgb_r_shift_24 = 16;
<a name="l01028"></a>01028 _rgb_g_shift_24 = 8;
<a name="l01029"></a>01029 _rgb_b_shift_24 = 0;
<a name="l01030"></a>01030
<a name="l01031"></a>01031 _rgb_a_shift_32 = 0;
<a name="l01032"></a>01032 _rgb_r_shift_32 = 24;
<a name="l01033"></a>01033 _rgb_g_shift_32 = 16;
<a name="l01034"></a>01034 _rgb_b_shift_32 = 8;
<a name="l01035"></a>01035 }
<a name="l01036"></a>01036 <span class="keywordflow">else</span> {
<a name="l01037"></a>01037 _rgb_r_shift_24 = 0;
<a name="l01038"></a>01038 _rgb_g_shift_24 = 8;
<a name="l01039"></a>01039 _rgb_b_shift_24 = 16;
<a name="l01040"></a>01040
<a name="l01041"></a>01041 _rgb_r_shift_32 = 0;
<a name="l01042"></a>01042 _rgb_g_shift_32 = 8;
<a name="l01043"></a>01043 _rgb_b_shift_32 = 16;
<a name="l01044"></a>01044 _rgb_a_shift_32 = 24;
<a name="l01045"></a>01045 }
<a name="l01046"></a>01046
<a name="l01047"></a>01047 <span class="keywordflow">return</span>;
<a name="l01048"></a>01048 }
<a name="l01049"></a>01049
<a name="l01050"></a>01050
<a name="l01051"></a>01051
<a name="l01052"></a>01052 <span class="comment">/* allegro_gl_default_init:</span>
<a name="l01053"></a>01053 <span class="comment"> * Sets a graphics mode according to the mode (fullscreen or windowed)</span>
<a name="l01054"></a>01054 <span class="comment"> * requested by the user. If it fails to set up the mode then it tries</span>
<a name="l01055"></a>01055 <span class="comment"> * (if available) the other one unless the user has "AGL_REQUIRED" the mode.</span>
<a name="l01056"></a>01056 <span class="comment"> */</span>
<a name="l01057"></a>01057 <span class="keyword">static</span> BITMAP *allegro_gl_default_gfx_init(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> vw, <span class="keywordtype">int</span> vh,
<a name="l01058"></a>01058 <span class="keywordtype">int</span> depth)
<a name="l01059"></a>01059 {
<a name="l01060"></a>01060 BITMAP* bmp = NULL;
<a name="l01061"></a>01061
<a name="l01062"></a>01062 <span class="keywordflow">if</span> (allegro_gl_display_info.fullscreen) {
<a name="l01063"></a>01063 TRACE(PREFIX_I <span class="stringliteral">"default_gfx_init: Trying to set up fullscreen mode.\n"</span>);
<a name="l01064"></a>01064
<a name="l01065"></a>01065 <span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l01066"></a>01066 <span class="preprocessor"></span> <span class="comment">/* Looks for fullscreen mode in our_driver_list */</span>
<a name="l01067"></a>01067 gfx_driver = &gfx_allegro_gl_fullscreen;
<a name="l01068"></a>01068
<a name="l01069"></a>01069 <span class="keywordflow">if</span> (__allegro_gl_required_settings & AGL_FULLSCREEN)
<a name="l01070"></a>01070 <span class="comment">/* Fullscreen mode required and found */</span>
<a name="l01071"></a>01071 <span class="keywordflow">return</span> gfx_allegro_gl_fullscreen.init(w, h, vw, vh, depth);
<a name="l01072"></a>01072 <span class="keywordflow">else</span>
<a name="l01073"></a>01073 bmp = gfx_allegro_gl_fullscreen.init(w, h, vw, vh, depth);
<a name="l01074"></a>01074
<a name="l01075"></a>01075 <span class="keywordflow">if</span> (bmp)
<a name="l01076"></a>01076 <span class="comment">/* Fullscreen mode found but not required (probably suggested) */</span>
<a name="l01077"></a>01077 <span class="keywordflow">return</span> bmp;
<a name="l01078"></a>01078
<a name="l01079"></a>01079 <span class="preprocessor">#endif </span><span class="comment">/*GFX_OPENGL_FULLSCREEN*/</span>
<a name="l01080"></a>01080
<a name="l01081"></a>01081 <span class="comment">/* Fullscreen mode not available but not required :</span>
<a name="l01082"></a>01082 <span class="comment"> * let's try windowed mode :</span>
<a name="l01083"></a>01083 <span class="comment"> */</span>
<a name="l01084"></a>01084 TRACE(PREFIX_I <span class="stringliteral">"default_gfx_init: Failed to set up fullscreen mode!\n"</span>);
<a name="l01085"></a>01085 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l01086"></a>01086 <span class="preprocessor"></span> TRACE(PREFIX_I <span class="stringliteral">"default_gfx_init: Trying windowed mode...\n"</span>);
<a name="l01087"></a>01087 allegro_gl_display_info.fullscreen = FALSE;
<a name="l01088"></a>01088 gfx_driver = &gfx_allegro_gl_windowed;
<a name="l01089"></a>01089 <span class="keywordflow">return</span> gfx_allegro_gl_windowed.init(w, h, vw, vh, depth);
<a name="l01090"></a>01090 <span class="preprocessor">#else</span>
<a name="l01091"></a>01091 <span class="preprocessor"></span> <span class="keywordflow">return</span> NULL;
<a name="l01092"></a>01092 <span class="preprocessor">#endif </span><span class="comment">/* GFX_OPENGL_WINDOWED */</span>
<a name="l01093"></a>01093 }
<a name="l01094"></a>01094 <span class="keywordflow">else</span> {
<a name="l01095"></a>01095 TRACE(PREFIX_I <span class="stringliteral">"default_gfx_init: Trying to set up windowed mode...\n"</span>);
<a name="l01096"></a>01096
<a name="l01097"></a>01097 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l01098"></a>01098 <span class="preprocessor"></span> <span class="comment">/* Looks for windowed mode in our_driver_list */</span>
<a name="l01099"></a>01099 gfx_driver = &gfx_allegro_gl_windowed;
<a name="l01100"></a>01100
<a name="l01101"></a>01101 <span class="keywordflow">if</span> (__allegro_gl_required_settings & AGL_WINDOWED)
<a name="l01102"></a>01102 <span class="comment">/* Windowed mode required and found */</span>
<a name="l01103"></a>01103 <span class="keywordflow">return</span> gfx_allegro_gl_windowed.init(w, h, vw, vh, depth);
<a name="l01104"></a>01104 <span class="keywordflow">else</span>
<a name="l01105"></a>01105 bmp = gfx_allegro_gl_windowed.init(w, h, vw, vh, depth);
<a name="l01106"></a>01106
<a name="l01107"></a>01107 <span class="keywordflow">if</span> (bmp)
<a name="l01108"></a>01108 <span class="comment">/* Windowed mode found but not required (probably suggested) */</span>
<a name="l01109"></a>01109 <span class="keywordflow">return</span> bmp;
<a name="l01110"></a>01110
<a name="l01111"></a>01111 <span class="preprocessor">#endif </span><span class="comment">/* GFX_OPENGL_WINDOWED */</span>
<a name="l01112"></a>01112
<a name="l01113"></a>01113 <span class="comment">/* Windowed mode not available but not required :</span>
<a name="l01114"></a>01114 <span class="comment"> * let's try fullscreen mode :</span>
<a name="l01115"></a>01115 <span class="comment"> */</span>
<a name="l01116"></a>01116 TRACE(PREFIX_I <span class="stringliteral">"default_gfx_init: Failed to set up windowed mode...\n"</span>);
<a name="l01117"></a>01117 <span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l01118"></a>01118 <span class="preprocessor"></span> TRACE(PREFIX_I <span class="stringliteral">"default_gfx_init: Trying fullscreen mode...\n"</span>);
<a name="l01119"></a>01119 allegro_gl_display_info.fullscreen = TRUE;
<a name="l01120"></a>01120 gfx_driver = &gfx_allegro_gl_fullscreen;
<a name="l01121"></a>01121 <span class="keywordflow">return</span> gfx_allegro_gl_fullscreen.init(w, h, vw, vh, depth);
<a name="l01122"></a>01122 <span class="preprocessor">#else</span>
<a name="l01123"></a>01123 <span class="preprocessor"></span> <span class="keywordflow">return</span> NULL;
<a name="l01124"></a>01124 <span class="preprocessor">#endif </span><span class="comment">/*GFX_OPENGL_FULLSCREEN*/</span>
<a name="l01125"></a>01125 }
<a name="l01126"></a>01126 }
<a name="l01127"></a>01127
<a name="l01128"></a>01128
<a name="l01129"></a>01129
<a name="l01130"></a>01130 <span class="comment">/* allegro_gl_set_blender_mode (GFX_DRIVER vtable entry):</span>
<a name="l01131"></a>01131 <span class="comment"> * Sets the blending mode. Same implementation to all GFX vtables.</span>
<a name="l01132"></a>01132 <span class="comment"> */</span>
<a name="l01133"></a>01133 <span class="keywordtype">void</span> allegro_gl_set_blender_mode(<span class="keywordtype">int</span> mode, <span class="keywordtype">int</span> r, <span class="keywordtype">int</span> g, <span class="keywordtype">int</span> b, <span class="keywordtype">int</span> a) {
<a name="l01134"></a>01134 __allegro_gl_blit_operation = AGL_OP_BLEND;
<a name="l01135"></a>01135 <span class="comment">/* These blenders do not need any special extensions. </span>
<a name="l01136"></a>01136 <span class="comment"> * We specify only pixel arithmetic here. Blend equation and blend</span>
<a name="l01137"></a>01137 <span class="comment"> * color (if available) are reset to defualt later.*/</span>
<a name="l01138"></a>01138 <span class="keywordflow">switch</span> (mode) {
<a name="l01139"></a>01139 <span class="keywordflow">case</span> blender_mode_none:
<a name="l01140"></a>01140 glBlendFunc(GL_ONE, GL_ZERO);
<a name="l01141"></a>01141 <span class="keywordflow">break</span>;
<a name="l01142"></a>01142 <span class="keywordflow">case</span> blender_mode_alpha:
<a name="l01143"></a>01143 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
<a name="l01144"></a>01144 <span class="keywordflow">break</span>;
<a name="l01145"></a>01145 <span class="keywordflow">case</span> blender_mode_invert:
<a name="l01146"></a>01146 glLogicOp(GL_COPY_INVERTED);
<a name="l01147"></a>01147 __allegro_gl_blit_operation = AGL_OP_LOGIC_OP;
<a name="l01148"></a>01148 <span class="keywordflow">break</span>;
<a name="l01149"></a>01149 <span class="keywordflow">case</span> blender_mode_multiply:
<a name="l01150"></a>01150 glBlendFunc(GL_DST_COLOR, GL_ZERO);
<a name="l01151"></a>01151 <span class="keywordflow">break</span>;
<a name="l01152"></a>01152 }
<a name="l01153"></a>01153
<a name="l01154"></a>01154 <span class="keywordflow">if</span> (<a class="code" href="group__core.html#ga444d507eaeb5ba800787f6a81827615d" title="Returns the OpenGL version number of the client (the computer the program is running on)...">allegro_gl_opengl_version</a>() >= 1.4 ||
<a name="l01155"></a>01155 (<a class="code" href="group__core.html#ga444d507eaeb5ba800787f6a81827615d" title="Returns the OpenGL version number of the client (the computer the program is running on)...">allegro_gl_opengl_version</a>() >= 1.2 &&
<a name="l01156"></a>01156 <a class="code" href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a" title="This function is an helper to determine whether an OpenGL extension is available or not...">allegro_gl_is_extension_supported</a>(<span class="stringliteral">"GL_ARB_imaging"</span>))) {
<a name="l01157"></a>01157 <span class="comment">/* We're running a recent version of OpenGL and everything needed is here. */</span>
<a name="l01158"></a>01158
<a name="l01159"></a>01159 glBlendColor(r / 255.f, g / 255.f, b / 255.f, a / 255.f);
<a name="l01160"></a>01160
<a name="l01161"></a>01161 <span class="keywordflow">switch</span> (mode) {
<a name="l01162"></a>01162 <span class="keywordflow">case</span> blender_mode_none:
<a name="l01163"></a>01163 glBlendEquation(GL_FUNC_ADD);
<a name="l01164"></a>01164 <span class="keywordflow">break</span>;
<a name="l01165"></a>01165 <span class="keywordflow">case</span> blender_mode_alpha:
<a name="l01166"></a>01166 glBlendEquation(GL_FUNC_ADD);
<a name="l01167"></a>01167 <span class="keywordflow">break</span>;
<a name="l01168"></a>01168 <span class="keywordflow">case</span> blender_mode_trans:
<a name="l01169"></a>01169 glBlendEquation(GL_FUNC_ADD);
<a name="l01170"></a>01170 glBlendFunc(GL_CONSTANT_ALPHA, GL_ONE_MINUS_CONSTANT_ALPHA);
<a name="l01171"></a>01171 <span class="keywordflow">break</span>;
<a name="l01172"></a>01172 <span class="keywordflow">case</span> blender_mode_add:
<a name="l01173"></a>01173 glBlendEquation(GL_FUNC_ADD);
<a name="l01174"></a>01174 glBlendFunc(GL_CONSTANT_ALPHA, GL_ONE);
<a name="l01175"></a>01175 <span class="keywordflow">break</span>;
<a name="l01176"></a>01176 <span class="keywordflow">case</span> blender_mode_burn:
<a name="l01177"></a>01177 glBlendEquation(GL_FUNC_SUBTRACT);
<a name="l01178"></a>01178 glBlendFunc(GL_ONE, GL_CONSTANT_ALPHA);
<a name="l01179"></a>01179 <span class="keywordflow">break</span>;
<a name="l01180"></a>01180 <span class="keywordflow">case</span> blender_mode_dodge:
<a name="l01181"></a>01181 glBlendEquation(GL_FUNC_ADD);
<a name="l01182"></a>01182 glBlendFunc(GL_ONE, GL_CONSTANT_ALPHA);
<a name="l01183"></a>01183 <span class="keywordflow">break</span>;
<a name="l01184"></a>01184 <span class="keywordflow">case</span> blender_mode_multiply:
<a name="l01185"></a>01185 glBlendEquation(GL_FUNC_ADD);
<a name="l01186"></a>01186 <span class="keywordflow">break</span>;
<a name="l01187"></a>01187 }
<a name="l01188"></a>01188
<a name="l01189"></a>01189 <span class="keywordflow">return</span>;
<a name="l01190"></a>01190 }
<a name="l01191"></a>01191
<a name="l01192"></a>01192 <span class="comment">/* Check for presence of glBlendColor() and special parameters to</span>
<a name="l01193"></a>01193 <span class="comment"> * glBlendFunc(). */</span>
<a name="l01194"></a>01194 <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a" title="This function is an helper to determine whether an OpenGL extension is available or not...">allegro_gl_is_extension_supported</a>(<span class="stringliteral">"GL_EXT_blend_color"</span>)) {
<a name="l01195"></a>01195 glBlendColorEXT(r / 255.f, g / 255.f, b / 255.f, a / 255.f);
<a name="l01196"></a>01196
<a name="l01197"></a>01197 <span class="keywordflow">switch</span> (mode) {
<a name="l01198"></a>01198 <span class="keywordflow">case</span> blender_mode_trans:
<a name="l01199"></a>01199 glBlendFunc(GL_CONSTANT_ALPHA_EXT, GL_ONE_MINUS_CONSTANT_ALPHA_EXT);
<a name="l01200"></a>01200 <span class="keywordflow">break</span>;
<a name="l01201"></a>01201 <span class="keywordflow">case</span> blender_mode_add:
<a name="l01202"></a>01202 glBlendFunc(GL_CONSTANT_ALPHA_EXT, GL_ONE);
<a name="l01203"></a>01203 <span class="keywordflow">break</span>;
<a name="l01204"></a>01204 <span class="keywordflow">case</span> blender_mode_burn:
<a name="l01205"></a>01205 glBlendFunc(GL_ONE, GL_CONSTANT_ALPHA_EXT);
<a name="l01206"></a>01206 <span class="keywordflow">break</span>;
<a name="l01207"></a>01207 <span class="keywordflow">case</span> blender_mode_dodge:
<a name="l01208"></a>01208 glBlendFunc(GL_ONE, GL_CONSTANT_ALPHA_EXT);
<a name="l01209"></a>01209 <span class="keywordflow">break</span>;
<a name="l01210"></a>01210 }
<a name="l01211"></a>01211 }
<a name="l01212"></a>01212 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (mode == blender_mode_trans ||
<a name="l01213"></a>01213 mode == blender_mode_add ||
<a name="l01214"></a>01214 mode == blender_mode_burn ||
<a name="l01215"></a>01215 mode == blender_mode_dodge) {
<a name="l01216"></a>01216 <span class="comment">/* glBlendColor() is not available and it is needed by the selected</span>
<a name="l01217"></a>01217 <span class="comment"> * bledner. Bail out.*/</span>
<a name="l01218"></a>01218 <span class="keywordflow">return</span>;
<a name="l01219"></a>01219 }
<a name="l01220"></a>01220
<a name="l01221"></a>01221 <span class="comment">/* Check for presence of glBlendEquation(). */</span>
<a name="l01222"></a>01222 <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a" title="This function is an helper to determine whether an OpenGL extension is available or not...">allegro_gl_is_extension_supported</a>(<span class="stringliteral">"GL_EXT_blend_minmax"</span>)) {
<a name="l01223"></a>01223 <span class="keywordflow">switch</span> (mode) {
<a name="l01224"></a>01224 <span class="keywordflow">case</span> blender_mode_none:
<a name="l01225"></a>01225 glBlendEquationEXT(GL_FUNC_ADD_EXT);
<a name="l01226"></a>01226 <span class="keywordflow">break</span>;
<a name="l01227"></a>01227 <span class="keywordflow">case</span> blender_mode_alpha:
<a name="l01228"></a>01228 glBlendEquationEXT(GL_FUNC_ADD_EXT);
<a name="l01229"></a>01229 <span class="keywordflow">break</span>;
<a name="l01230"></a>01230 <span class="keywordflow">case</span> blender_mode_trans:
<a name="l01231"></a>01231 glBlendEquationEXT(GL_FUNC_ADD_EXT);
<a name="l01232"></a>01232 <span class="keywordflow">break</span>;
<a name="l01233"></a>01233 <span class="keywordflow">case</span> blender_mode_add:
<a name="l01234"></a>01234 glBlendEquationEXT(GL_FUNC_ADD_EXT);
<a name="l01235"></a>01235 <span class="keywordflow">break</span>;
<a name="l01236"></a>01236 <span class="keywordflow">case</span> blender_mode_dodge:
<a name="l01237"></a>01237 glBlendEquationEXT(GL_FUNC_ADD_EXT);
<a name="l01238"></a>01238 <span class="keywordflow">break</span>;
<a name="l01239"></a>01239 <span class="keywordflow">case</span> blender_mode_multiply:
<a name="l01240"></a>01240 glBlendEquationEXT(GL_FUNC_ADD_EXT);
<a name="l01241"></a>01241 <span class="keywordflow">break</span>;
<a name="l01242"></a>01242 <span class="keywordflow">case</span> blender_mode_burn:
<a name="l01243"></a>01243 <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7351f56ea1c4f4665193fc3bf547ff0a" title="This function is an helper to determine whether an OpenGL extension is available or not...">allegro_gl_is_extension_supported</a>(<span class="stringliteral">"GL_EXT_blend_subtract"</span>)) {
<a name="l01244"></a>01244 glBlendEquationEXT(GL_FUNC_SUBTRACT_EXT);
<a name="l01245"></a>01245 }
<a name="l01246"></a>01246 <span class="keywordflow">else</span> {
<a name="l01247"></a>01247 <span class="comment">/* GL_FUNC_SUBTRACT is not supported and it is needed by the</span>
<a name="l01248"></a>01248 <span class="comment"> * selected blender. Bail out. */</span>
<a name="l01249"></a>01249 <span class="keywordflow">return</span>;
<a name="l01250"></a>01250 }
<a name="l01251"></a>01251 <span class="keywordflow">break</span>;
<a name="l01252"></a>01252 }
<a name="l01253"></a>01253 }
<a name="l01254"></a>01254 }
<a name="l01255"></a>01255
<a name="l01256"></a>01256
<a name="l01257"></a>01257 <span class="preprocessor">#ifdef DEBUGMODE</span>
<a name="l01258"></a>01258 <span class="preprocessor"></span><span class="preprocessor">#ifdef LOGLEVEL</span>
<a name="l01259"></a>01259 <span class="preprocessor"></span>
<a name="l01260"></a>01260 <span class="keywordtype">void</span> __allegro_gl_log(<span class="keywordtype">int</span> level, <span class="keyword">const</span> <span class="keywordtype">char</span> *str)
<a name="l01261"></a>01261 {
<a name="l01262"></a>01262 <span class="keywordflow">if</span> (level <= LOGLEVEL)
<a name="l01263"></a>01263 TRACE(PREFIX_L <span class="stringliteral">"[%d] %s"</span>, level, str);
<a name="l01264"></a>01264 }
<a name="l01265"></a>01265
<a name="l01266"></a>01266 <span class="preprocessor">#endif</span>
<a name="l01267"></a>01267 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l01268"></a>01268 <span class="preprocessor"></span>
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