1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>AllegroGL: djgpp.c Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
</script>
<link href="alleggl.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.7.3 -->
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">AllegroGL <span id="projectnumber">0.4.4</span></div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>Globals</span></a></li>
</ul>
</div>
</div>
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
initNavTree('djgpp_8c.html','');
</script>
<div id="doc-content">
<div class="header">
<div class="headertitle">
<h1>djgpp.c</h1> </div>
</div>
<div class="contents">
<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="l00004"></a>00004 <span class="comment">/*----------------------------------------------------------------</span>
<a name="l00005"></a>00005 <span class="comment"> * amesa.c -- Allegro-Mesa interfacing</span>
<a name="l00006"></a>00006 <span class="comment"> *----------------------------------------------------------------</span>
<a name="l00007"></a>00007 <span class="comment"> * This is the interface module for use AllegroGL with Mesa using the AMesa driver.</span>
<a name="l00008"></a>00008 <span class="comment"> */</span>
<a name="l00009"></a>00009 <span class="preprocessor">#include <string.h></span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="preprocessor">#include <GL/gl.h></span>
<a name="l00012"></a>00012 <span class="preprocessor">#include <GL/amesa.h></span>
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="preprocessor">#include <allegro.h></span>
<a name="l00015"></a>00015 <span class="preprocessor">#include <allegro/internal/aintern.h></span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#include "alleggl.h"</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include "allglint.h"</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include "glvtable.h"</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_amesa_exit(BITMAP *bmp);
<a name="l00023"></a>00023 <span class="keyword">static</span> <span class="keywordtype">void</span> __allegro_gl_init_texture_read_format(<span class="keywordtype">void</span>);
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="keyword">static</span> BITMAP *allegro_gl_amesa_fullscreen_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> color_depth);
<a name="l00027"></a>00027
<a name="l00028"></a>00028 GFX_DRIVER gfx_allegro_gl_fullscreen =
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 <a class="code" href="alleggl_8h.html#afd00c615b3351d54382b5f883b99544f" title="Fullscreen OpenGL graphics driver for Allegro.">GFX_OPENGL_FULLSCREEN</a>,
<a name="l00031"></a>00031 empty_string,
<a name="l00032"></a>00032 empty_string,
<a name="l00033"></a>00033 <span class="stringliteral">"AllegroGL Fullscreen (AMesa)"</span>,
<a name="l00034"></a>00034 allegro_gl_amesa_fullscreen_init,
<a name="l00035"></a>00035 allegro_gl_amesa_exit,
<a name="l00036"></a>00036 NULL,
<a name="l00037"></a>00037 NULL, <span class="comment">//_xwin_vsync,</span>
<a name="l00038"></a>00038 NULL,
<a name="l00039"></a>00039 NULL, NULL, NULL,
<a name="l00040"></a>00040 <a class="code" href="videovtb_8c.html#a4dadb9b189453bc9693c032ce63fc5b4" title="create_video_bitmap() overload.">allegro_gl_create_video_bitmap</a>,
<a name="l00041"></a>00041 <a class="code" href="videovtb_8c.html#a69a97f6c3805246762fbefb545f20f87" title="destroy_video_bitmap() overload.">allegro_gl_destroy_video_bitmap</a>,
<a name="l00042"></a>00042 NULL, NULL, <span class="comment">/* No show/request video bitmaps */</span>
<a name="l00043"></a>00043 NULL, NULL,
<a name="l00044"></a>00044 allegro_gl_set_mouse_sprite,
<a name="l00045"></a>00045 allegro_gl_show_mouse,
<a name="l00046"></a>00046 allegro_gl_hide_mouse,
<a name="l00047"></a>00047 allegro_gl_move_mouse,
<a name="l00048"></a>00048 NULL,
<a name="l00049"></a>00049 NULL, NULL,
<a name="l00050"></a>00050 NULL, <span class="comment">/* No fetch_mode_list */</span>
<a name="l00051"></a>00051 0, 0,
<a name="l00052"></a>00052 0,
<a name="l00053"></a>00053 0, 0,
<a name="l00054"></a>00054 0,
<a name="l00055"></a>00055 0,
<a name="l00056"></a>00056 FALSE <span class="comment">/* Windowed mode */</span>
<a name="l00057"></a>00057 };
<a name="l00058"></a>00058 <span class="preprocessor">#endif </span><span class="comment">/* GFX_OPENGL_FULLSCREEN */</span>
<a name="l00059"></a>00059
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l00062"></a>00062 <span class="preprocessor"></span><span class="keyword">static</span> BITMAP *allegro_gl_amesa_windowed_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> color_depth);
<a name="l00063"></a>00063
<a name="l00064"></a>00064 GFX_DRIVER gfx_allegro_gl_windowed =
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 <a class="code" href="alleggl_8h.html#a5fcf0497998fecc3c04bb5b6ce66782b" title="Windowed OpenGL graphics driver for Allegro.">GFX_OPENGL_WINDOWED</a>,
<a name="l00067"></a>00067 empty_string,
<a name="l00068"></a>00068 empty_string,
<a name="l00069"></a>00069 <span class="stringliteral">"AllegroGL Windowed (AMesa)"</span>,
<a name="l00070"></a>00070 allegro_gl_amesa_windowed_init,
<a name="l00071"></a>00071 allegro_gl_amesa_exit,
<a name="l00072"></a>00072 NULL,
<a name="l00073"></a>00073 NULL, <span class="comment">//_xwin_vsync,</span>
<a name="l00074"></a>00074 NULL,
<a name="l00075"></a>00075 NULL, NULL, NULL,
<a name="l00076"></a>00076 <a class="code" href="videovtb_8c.html#a4dadb9b189453bc9693c032ce63fc5b4" title="create_video_bitmap() overload.">allegro_gl_create_video_bitmap</a>,
<a name="l00077"></a>00077 <a class="code" href="videovtb_8c.html#a69a97f6c3805246762fbefb545f20f87" title="destroy_video_bitmap() overload.">allegro_gl_destroy_video_bitmap</a>,
<a name="l00078"></a>00078 NULL, NULL, <span class="comment">/* No show/request video bitmaps */</span>
<a name="l00079"></a>00079 NULL, NULL,
<a name="l00080"></a>00080 allegro_gl_set_mouse_sprite,
<a name="l00081"></a>00081 allegro_gl_show_mouse,
<a name="l00082"></a>00082 allegro_gl_hide_mouse,
<a name="l00083"></a>00083 allegro_gl_move_mouse,
<a name="l00084"></a>00084 NULL,
<a name="l00085"></a>00085 NULL, NULL,
<a name="l00086"></a>00086 NULL, <span class="comment">/* No fetch_mode_list */</span>
<a name="l00087"></a>00087 0, 0,
<a name="l00088"></a>00088 0,
<a name="l00089"></a>00089 0, 0,
<a name="l00090"></a>00090 0,
<a name="l00091"></a>00091 0,
<a name="l00092"></a>00092 TRUE <span class="comment">/* Windowed mode */</span>
<a name="l00093"></a>00093 };
<a name="l00094"></a>00094 <span class="preprocessor">#endif </span><span class="comment">/* GFX_OPENGL_WINDOWED */</span>
<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> <span class="keywordtype">int</span> allegro_gl_amesa_create_window (<span class="keywordtype">int</span> fullscreen);
<a name="l00099"></a>00099 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_create_screen_bitmap (GFX_DRIVER *drv, <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> depth);
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="keyword">struct </span>AMESA_DATA {
<a name="l00102"></a>00102 <span class="keywordtype">int</span> fullscreen;
<a name="l00103"></a>00103 AMesaVisual visual;
<a name="l00104"></a>00104 AMesaBuffer buffer;
<a name="l00105"></a>00105 AMesaContext context;
<a name="l00106"></a>00106 } AMESA_DATA;
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keyword">static</span> <span class="keyword">struct </span>AMESA_DATA _amesa;
<a name="l00109"></a>00109 <span class="keyword">static</span> <span class="keyword">struct </span>allegro_gl_driver allegro_gl_amesa;
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <span class="keyword">static</span> BITMAP* subscreen = NULL; <span class="comment">/* Sub_bitmap of the virtual screen */</span>
<a name="l00112"></a>00112 <span class="keyword">static</span> BITMAP* saved_screen = NULL; <span class="comment">/* Saves screen address */</span>
<a name="l00113"></a>00113
<a name="l00114"></a>00114 GFX_DRIVER *amesa_gfx_driver = NULL;
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keyword">static</span> GFX_VTABLE allegro_gl_generic_vtable;
<a name="l00117"></a>00117 <span class="keyword">static</span> GFX_VTABLE *old_vtable;
<a name="l00118"></a>00118
<a name="l00119"></a>00119
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="comment">/* allegro_gl_amesa_create_screen:</span>
<a name="l00122"></a>00122 <span class="comment"> * Creates screen bitmap.</span>
<a name="l00123"></a>00123 <span class="comment"> */</span>
<a name="l00124"></a>00124 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_create_screen(<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, <span class="keywordtype">int</span> fullscreen)
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="keywordtype">int</span> _keyboard_was_installed = FALSE;
<a name="l00127"></a>00127 <span class="keywordtype">int</span> _mouse_was_installed = FALSE;
<a name="l00128"></a>00128 GFX_VTABLE vtable, *pvtable;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 pvtable = &vtable;
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordflow">if</span> (keyboard_driver) {
<a name="l00133"></a>00133 _keyboard_was_installed = TRUE;
<a name="l00134"></a>00134 remove_keyboard();
<a name="l00135"></a>00135 TRACE(<span class="stringliteral">"* Note * amesa_create_screen: Removing Keyboard...\n"</span>);
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="keywordflow">if</span> (mouse_driver) {
<a name="l00139"></a>00139 _mouse_was_installed = TRUE;
<a name="l00140"></a>00140 remove_mouse();
<a name="l00141"></a>00141 TRACE(<span class="stringliteral">"* Note * amesa_create_screen: Removing Mouse...\n"</span>);
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keywordflow">if</span> ((w == 0) && (h == 0)) {
<a name="l00145"></a>00145 w = 640;
<a name="l00146"></a>00146 h = 480;
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="keywordflow">if</span> ((vw > w) || (vh > h)) {
<a name="l00150"></a>00150 ustrzcpy (allegro_error, ALLEGRO_ERROR_SIZE,
<a name="l00151"></a>00151 get_config_text (<span class="stringliteral">"OpenGL drivers do not support virtual screens"</span>));
<a name="l00152"></a>00152 <span class="keywordflow">return</span> NULL;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154
<a name="l00155"></a>00155 allegro_gl_display_info.w = w;
<a name="l00156"></a>00156 allegro_gl_display_info.h = h;
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keywordflow">if</span> (allegro_gl_amesa_create_window(fullscreen)) {
<a name="l00159"></a>00159 <span class="keywordflow">if</span> (fullscreen) {
<a name="l00160"></a>00160 ustrzcpy (allegro_error, ALLEGRO_ERROR_SIZE,
<a name="l00161"></a>00161 get_config_text (<span class="stringliteral">"Unable to switch in AMesa fullscreen"</span>));
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 <span class="keywordflow">else</span> {
<a name="l00164"></a>00164 ustrzcpy (allegro_error, ALLEGRO_ERROR_SIZE,
<a name="l00165"></a>00165 get_config_text (<span class="stringliteral">"Unable to create AMesa window"</span>));
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167 <span class="keywordflow">return</span> NULL;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="comment">/* If pixel format is Allegro compatible, set up Allegro correctly. */</span>
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keywordflow">if</span> (fullscreen) {
<a name="l00173"></a>00173 <span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l00174"></a>00174 <span class="preprocessor"></span> <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a> = allegro_gl_amesa_create_screen_bitmap (&gfx_allegro_gl_fullscreen, w, h, allegro_gl_display_info.colour_depth);
<a name="l00175"></a>00175 <span class="preprocessor">#endif</span>
<a name="l00176"></a>00176 <span class="preprocessor"></span> }
<a name="l00177"></a>00177 <span class="keywordflow">else</span> {
<a name="l00178"></a>00178 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l00179"></a>00179 <span class="preprocessor"></span> <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a> = allegro_gl_amesa_create_screen_bitmap (&gfx_allegro_gl_windowed, w, h, allegro_gl_display_info.colour_depth);
<a name="l00180"></a>00180 <span class="preprocessor">#endif</span>
<a name="l00181"></a>00181 <span class="preprocessor"></span> }
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (!<a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>) {
<a name="l00184"></a>00184 ustrzcpy (allegro_error, ALLEGRO_ERROR_SIZE,
<a name="l00185"></a>00185 get_config_text (<span class="stringliteral">"Error creating screen bitmap"</span>));
<a name="l00186"></a>00186 <span class="keywordflow">return</span> NULL;
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188
<a name="l00189"></a>00189 __allegro_gl_valid_context = TRUE;
<a name="l00190"></a>00190 __allegro_gl_driver = &allegro_gl_amesa;
<a name="l00191"></a>00191 LOCK_DATA(&_amesa, <span class="keyword">sizeof</span>(AMESA_DATA));
<a name="l00192"></a>00192 LOCK_DATA(__allegro_gl_driver, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> allegro_gl_driver));
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="comment">/* save the old vtable and create a copy */</span>
<a name="l00195"></a>00195 old_vtable = <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>->vtable;
<a name="l00196"></a>00196 memcpy(&allegro_gl_generic_vtable, <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>->vtable,
<a name="l00197"></a>00197 <span class="keyword">sizeof</span>(GFX_VTABLE));
<a name="l00198"></a>00198 <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>->vtable = &allegro_gl_generic_vtable;
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <span class="comment">/* The generic driver does not use the glvtable (since it already uses</span>
<a name="l00201"></a>00201 <span class="comment"> * 'pure' Allegro gfx functions. However it needs the AGL-specific</span>
<a name="l00202"></a>00202 <span class="comment"> * draw_glyph method. </span>
<a name="l00203"></a>00203 <span class="comment"> * Hence this hack : we call __allegro_gl__glvtable_update_vtable with</span>
<a name="l00204"></a>00204 <span class="comment"> * 'pvtable' as a parameter since we do not want the regular</span>
<a name="l00205"></a>00205 <span class="comment"> * allegro_gl_screen->vtable to be crushed.</span>
<a name="l00206"></a>00206 <span class="comment"> */</span>
<a name="l00207"></a>00207 __allegro_gl__glvtable_update_vtable(&pvtable);
<a name="l00208"></a>00208 <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>->vtable->draw_glyph = pvtable->draw_glyph;
<a name="l00209"></a>00209 memcpy(&_screen_vtable, <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>->vtable, <span class="keyword">sizeof</span>(GFX_VTABLE));
<a name="l00210"></a>00210 <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>->vtable = &_screen_vtable;
<a name="l00211"></a>00211 __allegro_gl_init_screen_mode();
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="comment">/* Print out OpenGL version info */</span>
<a name="l00214"></a>00214 TRACE(<span class="stringliteral">"\n\nOpenGL Version: %s\nVendor: %s\nRenderer: %s\n"</span>,
<a name="l00215"></a>00215 (<span class="keyword">const</span> <span class="keywordtype">char</span>*)glGetString(GL_VERSION),
<a name="l00216"></a>00216 (<span class="keyword">const</span> <span class="keywordtype">char</span>*)glGetString(GL_VENDOR),
<a name="l00217"></a>00217 (<span class="keyword">const</span> <span class="keywordtype">char</span>*)glGetString(GL_RENDERER));
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <span class="comment">/* Prints out OpenGL extensions info and activates needed extensions */</span>
<a name="l00220"></a>00220 __allegro_gl_manage_extensions();
<a name="l00221"></a>00221 __allegro_gl_init_texture_read_format();
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="keywordflow">if</span> (_keyboard_was_installed) {
<a name="l00224"></a>00224 install_keyboard();
<a name="l00225"></a>00225 TRACE(<span class="stringliteral">"* Note * amesa_create_screen: Installing Keyboard...\n"</span>);
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227
<a name="l00228"></a>00228 <span class="keywordflow">if</span> (_mouse_was_installed) {
<a name="l00229"></a>00229 install_mouse();
<a name="l00230"></a>00230 TRACE(<span class="stringliteral">"* Note * amesa_create_screen: Installing Mouse...\n"</span>);
<a name="l00231"></a>00231 }
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="comment">/* XXX <rohannessian> Maybe we should leave this for autodetection? */</span>
<a name="l00234"></a>00234 gfx_capabilities |= GFX_HW_CURSOR;
<a name="l00235"></a>00235
<a name="l00236"></a>00236 allegro_gl_info.is_mesa_driver = TRUE;
<a name="l00237"></a>00237 _amesa.fullscreen = fullscreen;
<a name="l00238"></a>00238 <span class="keywordflow">return</span> <a class="code" href="alleggl_8c.html#a84d9cceae55bf273f9aab7512b353284" title="Direct-mode GL `screen&#39; bitmap.">allegro_gl_screen</a>;
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240
<a name="l00241"></a>00241
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="preprocessor">#ifdef GFX_OPENGL_WINDOWED</span>
<a name="l00244"></a>00244 <span class="preprocessor"></span><span class="comment">/* allegro_gl_amesa_windowed_init:</span>
<a name="l00245"></a>00245 <span class="comment"> * Creates screen bitmap for windowed driver.</span>
<a name="l00246"></a>00246 <span class="comment"> */</span>
<a name="l00247"></a>00247 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_windowed_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="l00248"></a>00248 {
<a name="l00249"></a>00249 <span class="keywordflow">return</span> allegro_gl_amesa_create_screen(w, h, vw, vh, depth, FALSE);
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251 <span class="preprocessor">#endif</span>
<a name="l00252"></a>00252 <span class="preprocessor"></span>
<a name="l00253"></a>00253
<a name="l00254"></a>00254
<a name="l00255"></a>00255 <span class="preprocessor">#ifdef GFX_OPENGL_FULLSCREEN</span>
<a name="l00256"></a>00256 <span class="preprocessor"></span><span class="comment">/* allegro_gl_amesa_fullscreen_init:</span>
<a name="l00257"></a>00257 <span class="comment"> * Creates screen bitmap for fullscreen driver.</span>
<a name="l00258"></a>00258 <span class="comment"> */</span>
<a name="l00259"></a>00259 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_fullscreen_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="l00260"></a>00260 {
<a name="l00261"></a>00261 <span class="keywordflow">return</span> allegro_gl_amesa_create_screen(w, h, vw, vh, depth, TRUE);
<a name="l00262"></a>00262 }
<a name="l00263"></a>00263 <span class="preprocessor">#endif</span>
<a name="l00264"></a>00264 <span class="preprocessor"></span>
<a name="l00265"></a>00265
<a name="l00266"></a>00266
<a name="l00267"></a>00267 <span class="comment">/* allegro_gl_amesa_exit:</span>
<a name="l00268"></a>00268 <span class="comment"> * Shuts down the driver (shared between windowed and full-screen)</span>
<a name="l00269"></a>00269 <span class="comment"> */</span>
<a name="l00270"></a>00270 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_amesa_exit(BITMAP *bmp)
<a name="l00271"></a>00271 {
<a name="l00272"></a>00272 <span class="comment">/* Restore the screen to its intial value */</span>
<a name="l00273"></a>00273 screen = saved_screen;
<a name="l00274"></a>00274 <span class="keywordflow">if</span> (subscreen)
<a name="l00275"></a>00275 destroy_bitmap(subscreen);
<a name="l00276"></a>00276
<a name="l00277"></a>00277 amesa_gfx_driver->exit(screen);
<a name="l00278"></a>00278
<a name="l00279"></a>00279 AMesaMakeCurrent(_amesa.context, NULL);
<a name="l00280"></a>00280 AMesaDestroyVisual(_amesa.visual);
<a name="l00281"></a>00281 AMesaDestroyBuffer(_amesa.buffer);
<a name="l00282"></a>00282 AMesaDestroyContext(_amesa.context);
<a name="l00283"></a>00283
<a name="l00284"></a>00284 __allegro_gl_valid_context = FALSE;
<a name="l00285"></a>00285 }
<a name="l00286"></a>00286
<a name="l00287"></a>00287
<a name="l00288"></a>00288
<a name="l00289"></a>00289 <span class="keyword">static</span> <span class="keywordtype">void</span> amesa_choose_gfx_mode(_DRIVER_INFO *driver_info, <span class="keywordtype">int</span> *w, <span class="keywordtype">int</span> *h,
<a name="l00290"></a>00290 <span class="keywordtype">int</span> *colour_depth)
<a name="l00291"></a>00291 {
<a name="l00292"></a>00292 GFX_MODE_LIST *mode_list;
<a name="l00293"></a>00293 GFX_MODE *mode;
<a name="l00294"></a>00294 <span class="keywordtype">int</span> i;
<a name="l00295"></a>00295
<a name="l00296"></a>00296 TRACE(<span class="stringliteral">"* Note * amesa_choose_gfx_mode: GFX driver : %s\n"</span>,
<a name="l00297"></a>00297 ((GFX_DRIVER*)driver_info->driver)->ascii_name);
<a name="l00298"></a>00298
<a name="l00299"></a>00299 <span class="comment">/* Try to find a mode which resolution and color depth are higher or</span>
<a name="l00300"></a>00300 <span class="comment"> * equal to those requested</span>
<a name="l00301"></a>00301 <span class="comment"> */</span>
<a name="l00302"></a>00302 mode_list = get_gfx_mode_list(driver_info->id);
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="keywordflow">if</span> (mode_list) {
<a name="l00305"></a>00305 TRACE(<span class="stringliteral">"* Note * amesa_choose_gfx_mode: %i modes\n"</span>,
<a name="l00306"></a>00306 mode_list->num_modes);
<a name="l00307"></a>00307
<a name="l00308"></a>00308 mode = mode_list->mode;
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="keywordflow">for</span> (i = 0; i < mode_list->num_modes; i++) {
<a name="l00311"></a>00311 TRACE(<span class="stringliteral">"Mode %i : %ix%i %i bpp\n"</span>, i, mode->width, mode->height,
<a name="l00312"></a>00312 mode->bpp);
<a name="l00313"></a>00313 <span class="keywordflow">if</span> ((mode->width >= *w) && (mode->height >= *h) &&
<a name="l00314"></a>00314 (mode->bpp >= *colour_depth)) {
<a name="l00315"></a>00315 <span class="keywordflow">break</span>;
<a name="l00316"></a>00316 }
<a name="l00317"></a>00317 <span class="keywordflow">if</span> (mode->width) {
<a name="l00318"></a>00318 mode++;
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320 }
<a name="l00321"></a>00321 <span class="keywordflow">if</span> ((mode->width) && (mode->height) && (mode->bpp)) {
<a name="l00322"></a>00322 allegro_gl_display_info.w = *w = mode->width;
<a name="l00323"></a>00323 allegro_gl_display_info.h = *h = mode->height;
<a name="l00324"></a>00324 allegro_gl_display_info.colour_depth = *colour_depth = mode->bpp;
<a name="l00325"></a>00325 }
<a name="l00326"></a>00326 TRACE(<span class="stringliteral">"Best Mode : %ix%i %i bpp\n"</span>, *w, *h, *colour_depth);
<a name="l00327"></a>00327 destroy_gfx_mode_list(mode_list);
<a name="l00328"></a>00328 }
<a name="l00329"></a>00329 <span class="keywordflow">else</span> {
<a name="l00330"></a>00330 TRACE(<span class="stringliteral">"** Warning ** amesa_choose_gfx_mode: Can not list modes...\n"</span>
<a name="l00331"></a>00331 <span class="stringliteral">"Trying %ix%i %i bpp anyway\n"</span>, *w, *h, *colour_depth);
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333 }
<a name="l00334"></a>00334
<a name="l00335"></a>00335
<a name="l00336"></a>00336
<a name="l00337"></a>00337 <span class="comment">/* amesa_set_gfx_mode :</span>
<a name="l00338"></a>00338 <span class="comment"> * A light version of set_gfx_mode since when this function is reached we are</span>
<a name="l00339"></a>00339 <span class="comment"> * ALREADY in set_gfx_mode. No need to initialize some parameters.</span>
<a name="l00340"></a>00340 <span class="comment"> * Moreover we must choose our driver in saved_gfx_drivers and set the real</span>
<a name="l00341"></a>00341 <span class="comment"> * gfx driver (i.e. the GFX_OPENGL one) the right way.</span>
<a name="l00342"></a>00342 <span class="comment"> */</span>
<a name="l00343"></a>00343 <span class="keyword">static</span> <span class="keywordtype">int</span> amesa_set_gfx_mode(<span class="keywordtype">int</span> fullscreen)
<a name="l00344"></a>00344 {
<a name="l00345"></a>00345 <span class="keyword">extern</span> <span class="keywordtype">void</span> blit_end();
<a name="l00346"></a>00346 _DRIVER_INFO *driver_list;
<a name="l00347"></a>00347 <span class="keywordtype">int</span> tried = FALSE;
<a name="l00348"></a>00348 <span class="keywordtype">char</span> buf[512], tmp[64];
<a name="l00349"></a>00349 <span class="keywordtype">int</span> c, n;
<a name="l00350"></a>00350 <span class="keywordtype">int</span> card = GFX_AUTODETECT;
<a name="l00351"></a>00351 <span class="keywordtype">int</span> w = allegro_gl_display_info.w;
<a name="l00352"></a>00352 <span class="keywordtype">int</span> h = allegro_gl_display_info.h;
<a name="l00353"></a>00353 <span class="keywordtype">int</span> check_mode = TRUE, require_window = FALSE;
<a name="l00354"></a>00354
<a name="l00355"></a>00355 driver_list = saved_gfx_drivers();
<a name="l00356"></a>00356
<a name="l00357"></a>00357 <span class="keywordflow">if</span> (!fullscreen)
<a name="l00358"></a>00358 require_window = TRUE;
<a name="l00359"></a>00359
<a name="l00360"></a>00360 <span class="comment">/* try the drivers that are listed in the config file */</span>
<a name="l00361"></a>00361 <span class="keywordflow">for</span> (n=-2; n<255; n++) {
<a name="l00362"></a>00362 <span class="keywordflow">switch</span> (n) {
<a name="l00363"></a>00363
<a name="l00364"></a>00364 <span class="keywordflow">case</span> -2:
<a name="l00365"></a>00365 <span class="comment">/* example: gfx_card_640x480x16 = */</span>
<a name="l00366"></a>00366 usprintf(buf, uconvert_ascii(<span class="stringliteral">"gfx_card_%dx%dx%d"</span>, tmp), w, h,
<a name="l00367"></a>00367 _color_depth);
<a name="l00368"></a>00368 <span class="keywordflow">break</span>;
<a name="l00369"></a>00369
<a name="l00370"></a>00370 <span class="keywordflow">case</span> -1:
<a name="l00371"></a>00371 <span class="comment">/* example: gfx_card_24bpp = */</span>
<a name="l00372"></a>00372 usprintf(buf, uconvert_ascii(<span class="stringliteral">"gfx_card_%dbpp"</span>, tmp),
<a name="l00373"></a>00373 _color_depth);
<a name="l00374"></a>00374 <span class="keywordflow">break</span>;
<a name="l00375"></a>00375
<a name="l00376"></a>00376 <span class="keywordflow">case</span> 0:
<a name="l00377"></a>00377 <span class="comment">/* example: gfx_card = */</span>
<a name="l00378"></a>00378 ustrcpy(buf, uconvert_ascii(<span class="stringliteral">"gfx_card"</span>, tmp));
<a name="l00379"></a>00379 <span class="keywordflow">break</span>;
<a name="l00380"></a>00380
<a name="l00381"></a>00381 <span class="keywordflow">default</span>:
<a name="l00382"></a>00382 <span class="comment">/* example: gfx_card1 = */</span>
<a name="l00383"></a>00383 usprintf(buf, uconvert_ascii(<span class="stringliteral">"gfx_card%d"</span>, tmp), n);
<a name="l00384"></a>00384 <span class="keywordflow">break</span>;
<a name="l00385"></a>00385 }
<a name="l00386"></a>00386 card = get_config_id(uconvert_ascii(<span class="stringliteral">"graphics"</span>, tmp), buf,
<a name="l00387"></a>00387 GFX_AUTODETECT);
<a name="l00388"></a>00388
<a name="l00389"></a>00389 <span class="keywordflow">if</span> (card != GFX_AUTODETECT) {
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="keywordflow">for</span> (c=0; driver_list[c].driver; c++) {
<a name="l00392"></a>00392 <span class="keywordflow">if</span> (driver_list[c].<span class="keywordtype">id</span> == card) {
<a name="l00393"></a>00393 amesa_gfx_driver = driver_list[c].driver;
<a name="l00394"></a>00394
<a name="l00395"></a>00395 <span class="keywordflow">if</span> (check_mode) {
<a name="l00396"></a>00396 <span class="keywordflow">if</span> ( ((require_window) && (!amesa_gfx_driver->windowed))
<a name="l00397"></a>00397 || ((!require_window)
<a name="l00398"></a>00398 && (amesa_gfx_driver->windowed))) {
<a name="l00399"></a>00399
<a name="l00400"></a>00400 amesa_gfx_driver = NULL;
<a name="l00401"></a>00401 <span class="keywordflow">continue</span>;
<a name="l00402"></a>00402 }
<a name="l00403"></a>00403 }
<a name="l00404"></a>00404 <span class="keywordflow">break</span>;
<a name="l00405"></a>00405 }
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407
<a name="l00408"></a>00408 <span class="keywordflow">if</span> (amesa_gfx_driver) {
<a name="l00409"></a>00409 tried = TRUE;
<a name="l00410"></a>00410 amesa_gfx_driver->name = amesa_gfx_driver->desc
<a name="l00411"></a>00411 = get_config_text(amesa_gfx_driver->ascii_name);
<a name="l00412"></a>00412
<a name="l00413"></a>00413 amesa_choose_gfx_mode(&driver_list[c], &w, &h, &_color_depth);
<a name="l00414"></a>00414
<a name="l00415"></a>00415 screen = amesa_gfx_driver->init(w, h, 0, 0, _color_depth);
<a name="l00416"></a>00416 <span class="keywordflow">if</span> (screen) {
<a name="l00417"></a>00417 <span class="keywordflow">break</span>;
<a name="l00418"></a>00418 }
<a name="l00419"></a>00419 <span class="keywordflow">else</span> {
<a name="l00420"></a>00420 amesa_gfx_driver = NULL;
<a name="l00421"></a>00421 }
<a name="l00422"></a>00422 }
<a name="l00423"></a>00423 }
<a name="l00424"></a>00424 <span class="keywordflow">else</span> {
<a name="l00425"></a>00425 <span class="keywordflow">if</span> (n > 1) {
<a name="l00426"></a>00426 <span class="keywordflow">break</span>;
<a name="l00427"></a>00427 }
<a name="l00428"></a>00428 }
<a name="l00429"></a>00429 }
<a name="l00430"></a>00430
<a name="l00431"></a>00431 <span class="keywordflow">if</span> (!tried) {
<a name="l00432"></a>00432 <span class="keywordflow">for</span> (c=0; driver_list[c].driver; c++) {
<a name="l00433"></a>00433
<a name="l00434"></a>00434 <span class="keywordflow">if</span> (driver_list[c].autodetect) {
<a name="l00435"></a>00435
<a name="l00436"></a>00436 amesa_gfx_driver = driver_list[c].driver;
<a name="l00437"></a>00437 <span class="keywordflow">if</span> (check_mode) {
<a name="l00438"></a>00438 <span class="keywordflow">if</span> (((require_window) && (!amesa_gfx_driver->windowed)) ||
<a name="l00439"></a>00439 ((!require_window) && (amesa_gfx_driver->windowed)))
<a name="l00440"></a>00440 <span class="keywordflow">continue</span>;
<a name="l00441"></a>00441 }
<a name="l00442"></a>00442
<a name="l00443"></a>00443 amesa_gfx_driver->name = amesa_gfx_driver->desc
<a name="l00444"></a>00444 = get_config_text(amesa_gfx_driver->ascii_name);
<a name="l00445"></a>00445
<a name="l00446"></a>00446 amesa_choose_gfx_mode(&driver_list[c], &w, &h, &_color_depth);
<a name="l00447"></a>00447
<a name="l00448"></a>00448 screen = amesa_gfx_driver->init(w, h, 0, 0, _color_depth);
<a name="l00449"></a>00449
<a name="l00450"></a>00450 <span class="keywordflow">if</span> (screen) {
<a name="l00451"></a>00451 <span class="keywordflow">break</span>;
<a name="l00452"></a>00452 }
<a name="l00453"></a>00453 }
<a name="l00454"></a>00454 }
<a name="l00455"></a>00455 }
<a name="l00456"></a>00456
<a name="l00457"></a>00457 <span class="keywordflow">if</span> (!screen) {
<a name="l00458"></a>00458 amesa_gfx_driver = NULL;
<a name="l00459"></a>00459 <span class="keywordflow">return</span> -1;
<a name="l00460"></a>00460 }
<a name="l00461"></a>00461
<a name="l00462"></a>00462 LOCK_DATA(amesa_gfx_driver, <span class="keyword">sizeof</span>(GFX_DRIVER));
<a name="l00463"></a>00463 _register_switch_bitmap(screen, NULL);
<a name="l00464"></a>00464
<a name="l00465"></a>00465 <span class="keywordflow">return</span> 0;
<a name="l00466"></a>00466 }
<a name="l00467"></a>00467
<a name="l00468"></a>00468
<a name="l00469"></a>00469
<a name="l00470"></a>00470 <span class="comment">/* create_window:</span>
<a name="l00471"></a>00471 <span class="comment"> * Based on Bernhard Tschirren AMesa GLUT code.</span>
<a name="l00472"></a>00472 <span class="comment"> */</span>
<a name="l00473"></a>00473 <span class="keyword">static</span> <span class="keywordtype">int</span> allegro_gl_amesa_create_window (<span class="keywordtype">int</span> fullscreen)
<a name="l00474"></a>00474 {
<a name="l00475"></a>00475 <span class="keywordflow">if</span> (!allegro_gl_display_info.colour_depth)
<a name="l00476"></a>00476 allegro_gl_display_info.colour_depth = _color_depth;
<a name="l00477"></a>00477
<a name="l00478"></a>00478 set_color_depth(allegro_gl_display_info.colour_depth);
<a name="l00479"></a>00479
<a name="l00480"></a>00480 <span class="keywordflow">if</span> (amesa_set_gfx_mode(fullscreen)) {
<a name="l00481"></a>00481 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to set a gfx mode!\n"</span>);
<a name="l00482"></a>00482 <span class="keywordflow">return</span> 1;
<a name="l00483"></a>00483 }
<a name="l00484"></a>00484
<a name="l00485"></a>00485 _amesa.visual = AMesaCreateVisual(allegro_gl_display_info.doublebuffered,
<a name="l00486"></a>00486 allegro_gl_display_info.colour_depth,
<a name="l00487"></a>00487 GL_TRUE, <span class="comment">/* RGBA Mode */</span>
<a name="l00488"></a>00488 allegro_gl_display_info.depth_size,
<a name="l00489"></a>00489 allegro_gl_display_info.stencil_size,
<a name="l00490"></a>00490 allegro_gl_display_info.accum_size.rgba.r,
<a name="l00491"></a>00491 allegro_gl_display_info.accum_size.rgba.g,
<a name="l00492"></a>00492 allegro_gl_display_info.accum_size.rgba.b,
<a name="l00493"></a>00493 allegro_gl_display_info.accum_size.rgba.a
<a name="l00494"></a>00494 );
<a name="l00495"></a>00495 <span class="keywordflow">if</span> (!_amesa.visual) {
<a name="l00496"></a>00496 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to create AMesa "</span>
<a name="l00497"></a>00497 <span class="stringliteral">"Visual\n"</span>);
<a name="l00498"></a>00498 <span class="keywordflow">return</span> 1;
<a name="l00499"></a>00499 }
<a name="l00500"></a>00500
<a name="l00501"></a>00501 _amesa.context = AMesaCreateContext(_amesa.visual, NULL);
<a name="l00502"></a>00502 <span class="keywordflow">if</span> (!_amesa.context) {
<a name="l00503"></a>00503 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to create AMesa "</span>
<a name="l00504"></a>00504 <span class="stringliteral">"Context\n"</span>);
<a name="l00505"></a>00505 AMesaDestroyVisual(_amesa.visual);
<a name="l00506"></a>00506 <span class="keywordflow">return</span> 1;
<a name="l00507"></a>00507 }
<a name="l00508"></a>00508
<a name="l00509"></a>00509 <span class="keywordflow">if</span> ((screen->w != allegro_gl_display_info.w)
<a name="l00510"></a>00510 || (screen->h != allegro_gl_display_info.h)) {
<a name="l00511"></a>00511
<a name="l00512"></a>00512 subscreen = create_sub_bitmap(screen, 0, 0,
<a name="l00513"></a>00513 allegro_gl_display_info.w, allegro_gl_display_info.h);
<a name="l00514"></a>00514
<a name="l00515"></a>00515 _amesa.buffer = AMesaCreateBuffer(_amesa.visual, subscreen);
<a name="l00516"></a>00516
<a name="l00517"></a>00517 TRACE(<span class="stringliteral">"** Note ** amesa_create_window: Screen : %ix%i %i bpp\n"</span>,
<a name="l00518"></a>00518 ubscreen->w, subscreen->h, bitmap_color_depth(subscreen));
<a name="l00519"></a>00519 }
<a name="l00520"></a>00520 <span class="keywordflow">else</span> {
<a name="l00521"></a>00521 _amesa.buffer = AMesaCreateBuffer(_amesa.visual, screen);
<a name="l00522"></a>00522 }
<a name="l00523"></a>00523
<a name="l00524"></a>00524 <span class="keywordflow">if</span> (!_amesa.buffer) {
<a name="l00525"></a>00525 AMesaDestroyContext(_amesa.context);
<a name="l00526"></a>00526 AMesaDestroyVisual(_amesa.visual);
<a name="l00527"></a>00527 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to create AMesa "</span>
<a name="l00528"></a>00528 <span class="stringliteral">"Buffer\n"</span>);
<a name="l00529"></a>00529 <span class="keywordflow">return</span> 1;
<a name="l00530"></a>00530 }
<a name="l00531"></a>00531
<a name="l00532"></a>00532 <span class="keywordflow">if</span> (!AMesaMakeCurrent(_amesa.context, _amesa.buffer)) {
<a name="l00533"></a>00533 AMesaDestroyContext(_amesa.context);
<a name="l00534"></a>00534 AMesaDestroyVisual(_amesa.visual);
<a name="l00535"></a>00535 AMesaDestroyBuffer(_amesa.buffer);
<a name="l00536"></a>00536 TRACE(<span class="stringliteral">"** ERROR ** amesa_create_window: Unable to make context "</span>
<a name="l00537"></a>00537 <span class="stringliteral">"current\n"</span>);
<a name="l00538"></a>00538 <span class="keywordflow">return</span> 1;
<a name="l00539"></a>00539 }
<a name="l00540"></a>00540
<a name="l00541"></a>00541 saved_screen = screen;
<a name="l00542"></a>00542 <span class="keywordflow">return</span> 0;
<a name="l00543"></a>00543 }
<a name="l00544"></a>00544
<a name="l00545"></a>00545
<a name="l00546"></a>00546
<a name="l00547"></a>00547 <span class="keyword">static</span> BITMAP *allegro_gl_amesa_create_screen_bitmap (GFX_DRIVER *drv,
<a name="l00548"></a>00548 <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> depth)
<a name="l00549"></a>00549 {
<a name="l00550"></a>00550 drv->w = w;
<a name="l00551"></a>00551 drv->h = h;
<a name="l00552"></a>00552 drv->linear = amesa_gfx_driver->linear;
<a name="l00553"></a>00553 drv->bank_size = amesa_gfx_driver->bank_size;
<a name="l00554"></a>00554 drv->bank_gran = amesa_gfx_driver->bank_gran;
<a name="l00555"></a>00555 drv->vid_mem = amesa_gfx_driver->vid_mem;
<a name="l00556"></a>00556 drv->vid_phys_base = amesa_gfx_driver->vid_phys_base;
<a name="l00557"></a>00557
<a name="l00558"></a>00558 <span class="keywordflow">return</span> AMesaGetColorBuffer(_amesa.buffer, AMESA_ACTIVE);
<a name="l00559"></a>00559 }
<a name="l00560"></a>00560
<a name="l00561"></a>00561
<a name="l00562"></a>00562
<a name="l00563"></a>00563 <span class="keyword">static</span> <span class="keywordtype">void</span> __allegro_gl_init_texture_read_format(<span class="keywordtype">void</span>)
<a name="l00564"></a>00564 {
<a name="l00565"></a>00565 <span class="comment">/* 8 bpp (true color mode) */</span>
<a name="l00566"></a>00566 __allegro_gl_texture_read_format[0] = GL_UNSIGNED_BYTE_3_3_2;
<a name="l00567"></a>00567
<a name="l00568"></a>00568 <span class="comment">/* 15 bpp */</span>
<a name="l00569"></a>00569 <span class="keywordflow">if</span> (_rgb_r_shift_15 > _rgb_b_shift_15) {
<a name="l00570"></a>00570 __allegro_gl_texture_read_format[1] = GL_UNSIGNED_SHORT_5_5_5_1;
<a name="l00571"></a>00571 <span class="keywordflow">if</span> (_rgb_r_shift_15 == 10) {
<a name="l00572"></a>00572 __allegro_gl_texture_components[1] = GL_BGRA;
<a name="l00573"></a>00573 }
<a name="l00574"></a>00574 }
<a name="l00575"></a>00575 <span class="keywordflow">else</span> {
<a name="l00576"></a>00576 __allegro_gl_texture_read_format[1] = GL_UNSIGNED_SHORT_1_5_5_5_REV;
<a name="l00577"></a>00577 }
<a name="l00578"></a>00578
<a name="l00579"></a>00579 <span class="comment">/* 16 bpp */</span>
<a name="l00580"></a>00580 <span class="keywordflow">if</span> (_rgb_r_shift_16 > _rgb_b_shift_16) {
<a name="l00581"></a>00581 __allegro_gl_texture_read_format[2] = GL_UNSIGNED_SHORT_5_6_5;
<a name="l00582"></a>00582 }
<a name="l00583"></a>00583 <span class="keywordflow">else</span> {
<a name="l00584"></a>00584 __allegro_gl_texture_read_format[2] = GL_UNSIGNED_SHORT_5_6_5_REV;
<a name="l00585"></a>00585 }
<a name="l00586"></a>00586
<a name="l00587"></a>00587 <span class="comment">/* 24 bpp */</span>
<a name="l00588"></a>00588 __allegro_gl_texture_read_format[3] = GL_UNSIGNED_BYTE;
<a name="l00589"></a>00589
<a name="l00590"></a>00590 <span class="comment">/* 32 bpp */</span>
<a name="l00591"></a>00591 <span class="keywordflow">if</span> (_rgb_r_shift_32 > _rgb_b_shift_32) {
<a name="l00592"></a>00592 __allegro_gl_texture_read_format[4] = GL_UNSIGNED_INT_8_8_8_8_REV;
<a name="l00593"></a>00593 <span class="keywordflow">if</span> (_rgb_r_shift_32 == 16) {
<a name="l00594"></a>00594 __allegro_gl_texture_components[4] = GL_BGRA;
<a name="l00595"></a>00595 }
<a name="l00596"></a>00596 }
<a name="l00597"></a>00597 <span class="keywordflow">else</span> {
<a name="l00598"></a>00598 __allegro_gl_texture_read_format[4] = GL_UNSIGNED_BYTE;
<a name="l00599"></a>00599 }
<a name="l00600"></a>00600 }
<a name="l00601"></a>00601
<a name="l00602"></a>00602
<a name="l00603"></a>00603
<a name="l00604"></a>00604 <span class="comment">/******************************/</span>
<a name="l00605"></a>00605 <span class="comment">/* AllegroGL driver functions */</span>
<a name="l00606"></a>00606 <span class="comment">/******************************/</span>
<a name="l00607"></a>00607
<a name="l00608"></a>00608 <span class="comment">/* flip:</span>
<a name="l00609"></a>00609 <span class="comment"> * Does a page flip / double buffer copy / whatever it really is.</span>
<a name="l00610"></a>00610 <span class="comment"> */</span>
<a name="l00611"></a>00611 <span class="keyword">static</span> <span class="keywordtype">void</span> amesa_flip (<span class="keywordtype">void</span>)
<a name="l00612"></a>00612 {
<a name="l00613"></a>00613 AMesaSwapBuffers (_amesa.buffer);
<a name="l00614"></a>00614 }
<a name="l00615"></a>00615
<a name="l00616"></a>00616
<a name="l00617"></a>00617
<a name="l00618"></a>00618 <span class="comment">/* gl_on, gl_off:</span>
<a name="l00619"></a>00619 <span class="comment"> * Switches to/from GL mode.</span>
<a name="l00620"></a>00620 <span class="comment"> */</span>
<a name="l00621"></a>00621 <span class="keyword">static</span> <span class="keywordtype">void</span> amesa_gl_on (<span class="keywordtype">void</span>)
<a name="l00622"></a>00622 {
<a name="l00623"></a>00623 }
<a name="l00624"></a>00624
<a name="l00625"></a>00625
<a name="l00626"></a>00626
<a name="l00627"></a>00627 <span class="keyword">static</span> <span class="keywordtype">void</span> amesa_gl_off (<span class="keywordtype">void</span>)
<a name="l00628"></a>00628 {
<a name="l00629"></a>00629 }
<a name="l00630"></a>00630
<a name="l00631"></a>00631
<a name="l00632"></a>00632
<a name="l00633"></a>00633 <span class="comment">/*****************/</span>
<a name="l00634"></a>00634 <span class="comment">/* Driver struct */</span>
<a name="l00635"></a>00635 <span class="comment">/*****************/</span>
<a name="l00636"></a>00636
<a name="l00637"></a>00637 <span class="keyword">static</span> <span class="keyword">struct </span>allegro_gl_driver allegro_gl_amesa = {
<a name="l00638"></a>00638 amesa_flip,
<a name="l00639"></a>00639 amesa_gl_on,
<a name="l00640"></a>00640 amesa_gl_off
<a name="l00641"></a>00641 };
<a name="l00642"></a>00642
</pre></div></div>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><b>djgpp.c</b> </li>
<li class="footer">Generated on Thu May 19 2011 23:20:20 for AllegroGL by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.3 </li>
</ul>
</div>
</body>
</html>
|
