wgl.c@ 28347

Last change on this file since 28347 was 21954, checked in by vboxsync, 15 years ago
crOpenGL: fix stack corruption leading to crash when running call of duty
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 19.7 KB

Line
1	/* Copyright (c) 2001, Stanford University
2	* All rights reserved
3	*
4	* See the file LICENSE.txt for information on redistributing this software.
5	*/
6
7	#include "cr_error.h"
8	#include "cr_spu.h"
9	#include "cr_environment.h"
10	#include "stub.h"
11
12	/* I know most of the parameters are unused, dammit. */
13	#pragma warning( disable: 4100 )
14
15	#define WIN32_LEAN_AND_MEAN
16	#include <windows.h>
17	#include <stdio.h>
18
19	static GLuint desiredVisual = CR_RGB_BIT;
20
21
22	/**
23	* Compute a mask of CR_*_BIT flags which reflects the attributes of
24	* the pixel format of the given hdc.
25	*/
26	static GLuint ComputeVisBits( HDC hdc )
27	{
28	PIXELFORMATDESCRIPTOR pfd;
29	int iPixelFormat;
30	GLuint b = 0;
31
32	iPixelFormat = GetPixelFormat( hdc );
33
34	DescribePixelFormat( hdc, iPixelFormat, sizeof(pfd), &pfd );
35
36	if (pfd.cDepthBits > 0)
37	b \|= CR_DEPTH_BIT;
38	if (pfd.cAccumBits > 0)
39	b \|= CR_ACCUM_BIT;
40	if (pfd.cColorBits > 8)
41	b \|= CR_RGB_BIT;
42	if (pfd.cStencilBits > 0)
43	b \|= CR_STENCIL_BIT;
44	if (pfd.cAlphaBits > 0)
45	b \|= CR_ALPHA_BIT;
46	if (pfd.dwFlags & PFD_DOUBLEBUFFER)
47	b \|= CR_DOUBLE_BIT;
48	if (pfd.dwFlags & PFD_STEREO)
49	b \|= CR_STEREO_BIT;
50
51	return b;
52	}
53
54	int WINAPI wglChoosePixelFormat_prox( HDC hdc, CONST PIXELFORMATDESCRIPTOR *pfd )
55	{
56	DWORD okayFlags;
57
58	stubInit();
59
60	/*
61	* NOTE!!!
62	* Here we're telling the renderspu not to use the GDI
63	* equivalent's of ChoosePixelFormat/DescribePixelFormat etc
64	* There are subtle differences in the use of these calls.
65	*/
66	crSetenv("CR_WGL_DO_NOT_USE_GDI", "yes");
67
68	if ( pfd->nSize != sizeof(*pfd) \|\| pfd->nVersion != 1 ) {
69	crError( "wglChoosePixelFormat: bad pfd\n" );
70	return 0;
71	}
72
73	okayFlags = ( PFD_DRAW_TO_WINDOW \|
74	PFD_SUPPORT_GDI \|
75	PFD_SUPPORT_OPENGL \|
76	PFD_DOUBLEBUFFER \|
77	PFD_DOUBLEBUFFER_DONTCARE \|
78	PFD_SWAP_EXCHANGE \|
79	PFD_SWAP_COPY \|
80	PFD_STEREO \|
81	PFD_STEREO_DONTCARE \|
82	PFD_DEPTH_DONTCARE );
83	if ( pfd->dwFlags & ~okayFlags ) {
84	crWarning( "wglChoosePixelFormat: only support flags=0x%x, but you gave me flags=0x%x", okayFlags, pfd->dwFlags );
85	return 0;
86	}
87
88	if ( pfd->iPixelType != PFD_TYPE_RGBA ) {
89	crError( "wglChoosePixelFormat: only support RGBA\n" );
90	}
91
92	if ( pfd->cColorBits > 32 \|\|
93	pfd->cRedBits > 8 \|\|
94	pfd->cGreenBits > 8 \|\|
95	pfd->cBlueBits > 8 \|\|
96	pfd->cAlphaBits > 8 ) {
97	crWarning( "wglChoosePixelFormat: too much color precision requested\n" );
98	}
99
100	if ( pfd->dwFlags & PFD_DOUBLEBUFFER )
101	desiredVisual \|= CR_DOUBLE_BIT;
102
103	if ( pfd->dwFlags & PFD_STEREO )
104	desiredVisual \|= CR_STEREO_BIT;
105
106	if ( pfd->cColorBits > 8)
107	desiredVisual \|= CR_RGB_BIT;
108
109	if ( pfd->cAccumBits > 0 \|\|
110	pfd->cAccumRedBits > 0 \|\|
111	pfd->cAccumGreenBits > 0 \|\|
112	pfd->cAccumBlueBits > 0 \|\|
113	pfd->cAccumAlphaBits > 0 ) {
114	crWarning( "wglChoosePixelFormat: asked for accumulation buffer, ignoring\n" );
115	}
116
117	if ( pfd->cAccumBits > 0 )
118	desiredVisual \|= CR_ACCUM_BIT;
119
120	if ( pfd->cDepthBits > 32 ) {
121	crError( "wglChoosePixelFormat; asked for too many depth bits\n" );
122	}
123
124	if ( pfd->cDepthBits > 0 )
125	desiredVisual \|= CR_DEPTH_BIT;
126
127	if ( pfd->cStencilBits > 8 ) {
128	crError( "wglChoosePixelFormat: asked for too many stencil bits\n" );
129	}
130
131	if ( pfd->cStencilBits > 0 )
132	desiredVisual \|= CR_STENCIL_BIT;
133
134	if ( pfd->cAuxBuffers > 0 ) {
135	crError( "wglChoosePixelFormat: asked for aux buffers\n" );
136	}
137
138	if ( pfd->iLayerType != PFD_MAIN_PLANE ) {
139	crError( "wglChoosePixelFormat: asked for a strange layer\n" );
140	}
141
142	return 1;
143	}
144
145	BOOL WINAPI wglSetPixelFormat_prox( HDC hdc, int pixelFormat,
146	CONST PIXELFORMATDESCRIPTOR *pdf )
147	{
148	if ( pixelFormat != 1 ) {
149	crError( "wglSetPixelFormat: pixelFormat=%d?\n", pixelFormat );
150	}
151
152	return 1;
153	}
154
155	BOOL WINAPI wglDeleteContext_prox( HGLRC hglrc )
156	{
157	stubDestroyContext( (unsigned long) hglrc );
158	return 1;
159	}
160
161	BOOL WINAPI wglMakeCurrent_prox( HDC hdc, HGLRC hglrc )
162	{
163	ContextInfo *context;
164	WindowInfo *window;
165
166	context = (ContextInfo *) crHashtableSearch(stub.contextTable, (unsigned long) hglrc);
167	window = stubGetWindowInfo(hdc);
168
169	return stubMakeCurrent( window, context );
170	}
171
172	HGLRC WINAPI wglGetCurrentContext_prox( void )
173	{
174	return (HGLRC) stub.currentContext;
175	}
176
177	HDC WINAPI wglGetCurrentDC_prox( void )
178	{
179	if (stub.currentContext && stub.currentContext->currentDrawable)
180	return (HDC) stub.currentContext->currentDrawable->drawable;
181	else
182	return (HDC) NULL;
183	}
184
185	int WINAPI wglGetPixelFormat_prox( HDC hdc )
186	{
187	/* this is what we call our generic pixelformat, regardless of the HDC */
188	return 1;
189	}
190
191	int WINAPI wglDescribePixelFormat_prox( HDC hdc, int pixelFormat, UINT nBytes,
192	LPPIXELFORMATDESCRIPTOR pfd )
193	{
194	/* if ( pixelFormat != 1 ) {
195	* crError( "wglDescribePixelFormat: pixelFormat=%d?\n", pixelFormat );
196	* return 0;
197	* } */
198
199	if ( !pfd ) {
200	crWarning( "wglDescribePixelFormat: pfd=NULL\n" );
201	return 1; /* There's only one, baby */
202	}
203
204	if ( nBytes != sizeof(*pfd) ) {
205	crWarning( "wglDescribePixelFormat: nBytes=%u?\n", nBytes );
206	return 1; /* There's only one, baby */
207	}
208
209	pfd->nSize = sizeof(*pfd);
210	pfd->nVersion = 1;
211	pfd->dwFlags = ( PFD_DRAW_TO_WINDOW \|
212	PFD_SUPPORT_GDI \|
213	PFD_SUPPORT_OPENGL \|
214	PFD_DOUBLEBUFFER );
215	pfd->iPixelType = PFD_TYPE_RGBA;
216	pfd->cColorBits = 32;
217	pfd->cRedBits = 8;
218	pfd->cRedShift = 24;
219	pfd->cGreenBits = 8;
220	pfd->cGreenShift = 16;
221	pfd->cBlueBits = 8;
222	pfd->cBlueShift = 8;
223	pfd->cAlphaBits = 8;
224	pfd->cAlphaShift = 0;
225	pfd->cAccumBits = 0;
226	pfd->cAccumRedBits = 0;
227	pfd->cAccumGreenBits = 0;
228	pfd->cAccumBlueBits = 0;
229	pfd->cAccumAlphaBits = 0;
230	pfd->cDepthBits = 32;
231	pfd->cStencilBits = 8;
232	pfd->cAuxBuffers = 0;
233	pfd->iLayerType = PFD_MAIN_PLANE;
234	pfd->bReserved = 0;
235	pfd->dwLayerMask = 0;
236	pfd->dwVisibleMask = 0;
237	pfd->dwDamageMask = 0;
238
239	/* the max PFD index */
240	return 1;
241	}
242
243	BOOL WINAPI wglShareLists_prox( HGLRC hglrc1, HGLRC hglrc2 )
244	{
245	crWarning( "wglShareLists: unsupported" );
246	return 0;
247	}
248
249
250	HGLRC WINAPI wglCreateContext_prox( HDC hdc )
251	{
252	char dpyName[MAX_DPY_NAME];
253	ContextInfo *context;
254
255	stubInit();
256
257	CRASSERT(stub.contextTable);
258
259	sprintf(dpyName, "%d", hdc);
260	if (stub.haveNativeOpenGL)
261	desiredVisual \|= ComputeVisBits( hdc );
262
263	context = stubNewContext(dpyName, desiredVisual, UNDECIDED, 0);
264	if (!context)
265	return 0;
266
267	return (HGLRC) context->id;
268	}
269
270	BOOL WINAPI
271	wglSwapBuffers_prox( HDC hdc )
272	{
273	const WindowInfo *window = stubGetWindowInfo(hdc);
274	stubSwapBuffers( window, 0 );
275	return 1;
276	}
277
278	BOOL WINAPI wglCopyContext_prox( HGLRC src, HGLRC dst, UINT mask )
279	{
280	crWarning( "wglCopyContext: unsupported" );
281	return 0;
282	}
283
284	HGLRC WINAPI wglCreateLayerContext_prox( HDC hdc, int layerPlane )
285	{
286	stubInit();
287	crWarning( "wglCreateLayerContext: unsupported" );
288	return 0;
289	}
290
291	PROC WINAPI wglGetProcAddress_prox( LPCSTR name )
292	{
293	return (PROC) crGetProcAddress( name );
294	}
295
296	BOOL WINAPI wglUseFontBitmapsA_prox( HDC hdc, DWORD first, DWORD count, DWORD listBase )
297	{
298	crWarning( "wglUseFontBitmapsA: unsupported" );
299	return 0;
300	}
301
302	BOOL WINAPI wglUseFontBitmapsW_prox( HDC hdc, DWORD first, DWORD count, DWORD listBase )
303	{
304	crWarning( "wglUseFontBitmapsW: unsupported" );
305	return 0;
306	}
307
308	BOOL WINAPI wglDescribeLayerPlane_prox( HDC hdc, int pixelFormat, int layerPlane,
309	UINT nBytes, LPLAYERPLANEDESCRIPTOR lpd )
310	{
311	crWarning( "wglDescribeLayerPlane: unimplemented" );
312	return 0;
313	}
314
315	int WINAPI wglSetLayerPaletteEntries_prox( HDC hdc, int layerPlane, int start,
316	int entries, CONST COLORREF *cr )
317	{
318	crWarning( "wglSetLayerPaletteEntries: unsupported" );
319	return 0;
320	}
321
322	int WINAPI wglGetLayerPaletteEntries_prox( HDC hdc, int layerPlane, int start,
323	int entries, COLORREF *cr )
324	{
325	crWarning( "wglGetLayerPaletteEntries: unsupported" );
326	return 0;
327	}
328
329	BOOL WINAPI wglRealizeLayerPalette_prox( HDC hdc, int layerPlane, BOOL realize )
330	{
331	crWarning( "wglRealizeLayerPalette: unsupported" );
332	return 0;
333	}
334
335	DWORD WINAPI wglSwapMultipleBuffers_prox( UINT a, CONST void *b )
336	{
337	crWarning( "wglSwapMultipleBuffer: unsupported" );
338	return 0;
339	}
340
341	BOOL WINAPI wglUseFontOutlinesA_prox( HDC hdc, DWORD first, DWORD count, DWORD listBase,
342	FLOAT deviation, FLOAT extrusion, int format,
343	LPGLYPHMETRICSFLOAT gmf )
344	{
345	crWarning( "wglUseFontOutlinesA: unsupported" );
346	return 0;
347	}
348
349	BOOL WINAPI wglUseFontOutlinesW_prox( HDC hdc, DWORD first, DWORD count, DWORD listBase,
350	FLOAT deviation, FLOAT extrusion, int format,
351	LPGLYPHMETRICSFLOAT gmf )
352	{
353	crWarning( "wglUseFontOutlinesW: unsupported" );
354	return 0;
355	}
356
357	BOOL WINAPI wglSwapLayerBuffers_prox( HDC hdc, UINT planes )
358	{
359	crWarning( "wglSwapLayerBuffers: unsupported" );
360	return 0;
361	}
362
363	BOOL WINAPI wglChoosePixelFormatEXT_prox
364	(HDC hdc, const int piAttributes, const FLOAT pfAttributes, UINT nMaxFormats, int piFormats, UINT nNumFormats)
365	{
366	int *pi;
367	int wants_rgb = 0;
368
369	stubInit();
370
371	/* TODO : Need to check pfAttributes too ! */
372
373	for ( pi = (int )piAttributes; pi != 0; pi++ )
374	{
375	switch ( *pi )
376	{
377	case WGL_COLOR_BITS_EXT:
378	if (pi[1] > 8)
379	wants_rgb = 1;
380	pi++;
381	break;
382
383	case WGL_RED_BITS_EXT:
384	case WGL_GREEN_BITS_EXT:
385	case WGL_BLUE_BITS_EXT:
386	if (pi[1] > 3)
387	wants_rgb = 1;
388	pi++;
389	break;
390
391	case WGL_ACCUM_ALPHA_BITS_EXT:
392	case WGL_ALPHA_BITS_EXT:
393	if (pi[1] > 0)
394	desiredVisual \|= CR_ALPHA_BIT;
395	pi++;
396	break;
397
398	case WGL_DOUBLE_BUFFER_EXT:
399	if (pi[1] > 0)
400	desiredVisual \|= CR_DOUBLE_BIT;
401	pi++;
402	break;
403
404	case WGL_STEREO_EXT:
405	if (pi[1] > 0)
406	desiredVisual \|= CR_STEREO_BIT;
407	pi++;
408	break;
409
410	case WGL_DEPTH_BITS_EXT:
411	if (pi[1] > 0)
412	desiredVisual \|= CR_DEPTH_BIT;
413	pi++;
414	break;
415
416	case WGL_STENCIL_BITS_EXT:
417	if (pi[1] > 0)
418	desiredVisual \|= CR_STENCIL_BIT;
419	pi++;
420	break;
421
422	case WGL_ACCUM_RED_BITS_EXT:
423	case WGL_ACCUM_GREEN_BITS_EXT:
424	case WGL_ACCUM_BLUE_BITS_EXT:
425	if (pi[1] > 0)
426	desiredVisual \|= CR_ACCUM_BIT;
427	pi++;
428	break;
429
430	case WGL_SAMPLE_BUFFERS_EXT:
431	case WGL_SAMPLES_EXT:
432	if (pi[1] > 0)
433	desiredVisual \|= CR_MULTISAMPLE_BIT;
434	pi++;
435	break;
436
437	case WGL_SUPPORT_OPENGL_ARB:
438	case WGL_DRAW_TO_WINDOW_ARB:
439	case WGL_ACCELERATION_ARB:
440	pi++;
441	break;
442
443	case WGL_PIXEL_TYPE_ARB:
444	if(pi[1]!=WGL_TYPE_RGBA_ARB)
445	{
446	crWarning("WGL_PIXEL_TYPE 0x%x not supported!", pi[1]);
447	return 0;
448	}
449	pi++;
450	break;
451
452	default:
453	crWarning( "wglChoosePixelFormatEXT: bad pi=0x%x", *pi );
454	return 0;
455	}
456	}
457
458	if (nNumFormats) *nNumFormats = 1;
459	if (nMaxFormats>0 && piFormats)
460	{
461	piFormats[0] = 1;
462	}
463
464	return 1;
465	}
466
467	BOOL WINAPI wglGetPixelFormatAttribivEXT_prox
468	(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, int piAttributes, int pValues)
469	{
470	UINT i;
471
472	if (!pValues \|\| !piAttributes) return 0;
473
474	if ((nAttributes!=1) \|\| (piAttributes && piAttributes[0]!=WGL_NUMBER_PIXEL_FORMATS_ARB))
475	{
476	if (iPixelFormat!=1)
477	{
478	crDebug("wglGetPixelFormatAttribivARB: bad pf:%i", iPixelFormat);
479	return 0;
480	}
481	}
482
483	for (i=0; i<nAttributes; ++i)
484	{
485	switch (piAttributes[i])
486	{
487	case WGL_NUMBER_PIXEL_FORMATS_ARB:
488	pValues[i] = 1;
489	break;
490	case WGL_DRAW_TO_WINDOW_ARB:
491	case WGL_SUPPORT_OPENGL_ARB:
492	case WGL_DOUBLE_BUFFER_ARB:
493	case WGL_STEREO_ARB:
494	pValues[i] = 1;
495	break;
496	case WGL_DRAW_TO_BITMAP_ARB:
497	case WGL_NEED_PALETTE_ARB:
498	case WGL_NEED_SYSTEM_PALETTE_ARB:
499	case WGL_SWAP_LAYER_BUFFERS_ARB:
500	case WGL_NUMBER_OVERLAYS_ARB:
501	case WGL_NUMBER_UNDERLAYS_ARB:
502	case WGL_TRANSPARENT_ARB:
503	case WGL_TRANSPARENT_RED_VALUE_ARB:
504	case WGL_TRANSPARENT_GREEN_VALUE_ARB:
505	case WGL_TRANSPARENT_BLUE_VALUE_ARB:
506	case WGL_TRANSPARENT_ALPHA_VALUE_ARB:
507	case WGL_TRANSPARENT_INDEX_VALUE_ARB:
508	case WGL_SHARE_DEPTH_ARB:
509	case WGL_SHARE_STENCIL_ARB:
510	case WGL_SHARE_ACCUM_ARB:
511	case WGL_SUPPORT_GDI_ARB:
512	pValues[i] = 0;
513	break;
514	case WGL_ACCELERATION_ARB:
515	pValues[i] = WGL_FULL_ACCELERATION_ARB;
516	break;
517	case WGL_SWAP_METHOD_ARB:
518	pValues[i] = WGL_SWAP_UNDEFINED_ARB;
519	break;
520	case WGL_PIXEL_TYPE_ARB:
521	pValues[i] = WGL_TYPE_RGBA_ARB;
522	break;
523	case WGL_COLOR_BITS_ARB:
524	pValues[i] = 32;
525	break;
526	case WGL_RED_BITS_ARB:
527	case WGL_GREEN_BITS_ARB:
528	case WGL_BLUE_BITS_ARB:
529	case WGL_ALPHA_BITS_ARB:
530	pValues[i] = 8;
531	break;
532	case WGL_RED_SHIFT_ARB:
533	pValues[i] = 24;
534	break;
535	case WGL_GREEN_SHIFT_ARB:
536	pValues[i] = 16;
537	break;
538	case WGL_BLUE_SHIFT_ARB:
539	pValues[i] = 8;
540	break;
541	case WGL_ALPHA_SHIFT_ARB:
542	pValues[i] = 0;
543	break;
544	case WGL_ACCUM_BITS_ARB:
545	pValues[i] = 0;
546	break;
547	case WGL_ACCUM_RED_BITS_ARB:
548	pValues[i] = 0;
549	break;
550	case WGL_ACCUM_GREEN_BITS_ARB:
551	pValues[i] = 0;
552	break;
553	case WGL_ACCUM_BLUE_BITS_ARB:
554	pValues[i] = 0;
555	break;
556	case WGL_ACCUM_ALPHA_BITS_ARB:
557	pValues[i] = 0;
558	break;
559	case WGL_DEPTH_BITS_ARB:
560	pValues[i] = 32;
561	break;
562	case WGL_STENCIL_BITS_ARB:
563	pValues[i] = 8;
564	break;
565	case WGL_AUX_BUFFERS_ARB:
566	pValues[i] = 0;
567	break;
568	case WGL_SAMPLE_BUFFERS_EXT:
569	pValues[i] = 1;
570	break;
571	case WGL_SAMPLES_EXT:
572	pValues[i] = 1;
573	break;
574	default:
575	crWarning("wglGetPixelFormatAttribivARB: bad attrib=0x%x", piAttributes[i]);
576	return 0;
577	}
578	}
579
580	return 1;
581	}
582
583	BOOL WINAPI wglGetPixelFormatAttribfvEXT_prox
584	(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, int piAttributes, float pValues)
585	{
586	UINT i;
587
588	if (!pValues \|\| !piAttributes) return 0;
589
590	if ((nAttributes!=1) \|\| (piAttributes && piAttributes[0]!=WGL_NUMBER_PIXEL_FORMATS_ARB))
591	{
592	if (iPixelFormat!=1)
593	{
594	crDebug("wglGetPixelFormatAttribivARB: bad pf:%i", iPixelFormat);
595	return 0;
596	}
597	}
598
599	for (i=0; i<nAttributes; ++i)
600	{
601	switch (piAttributes[i])
602	{
603	case WGL_NUMBER_PIXEL_FORMATS_ARB:
604	pValues[i] = 1.f;
605	break;
606	case WGL_DRAW_TO_WINDOW_ARB:
607	case WGL_SUPPORT_OPENGL_ARB:
608	case WGL_DOUBLE_BUFFER_ARB:
609	case WGL_STEREO_ARB:
610	pValues[i] = 1.f;
611	break;
612	case WGL_DRAW_TO_BITMAP_ARB:
613	case WGL_NEED_PALETTE_ARB:
614	case WGL_NEED_SYSTEM_PALETTE_ARB:
615	case WGL_SWAP_LAYER_BUFFERS_ARB:
616	case WGL_NUMBER_OVERLAYS_ARB:
617	case WGL_NUMBER_UNDERLAYS_ARB:
618	case WGL_TRANSPARENT_ARB:
619	case WGL_TRANSPARENT_RED_VALUE_ARB:
620	case WGL_TRANSPARENT_GREEN_VALUE_ARB:
621	case WGL_TRANSPARENT_BLUE_VALUE_ARB:
622	case WGL_TRANSPARENT_ALPHA_VALUE_ARB:
623	case WGL_TRANSPARENT_INDEX_VALUE_ARB:
624	case WGL_SHARE_DEPTH_ARB:
625	case WGL_SHARE_STENCIL_ARB:
626	case WGL_SHARE_ACCUM_ARB:
627	case WGL_SUPPORT_GDI_ARB:
628	pValues[i] = 0.f;
629	break;
630	case WGL_ACCELERATION_ARB:
631	pValues[i] = WGL_FULL_ACCELERATION_ARB;
632	break;
633	case WGL_SWAP_METHOD_ARB:
634	pValues[i] = WGL_SWAP_UNDEFINED_ARB;
635	break;
636	case WGL_PIXEL_TYPE_ARB:
637	pValues[i] = WGL_TYPE_RGBA_ARB;
638	break;
639	case WGL_COLOR_BITS_ARB:
640	pValues[i] = 32.f;
641	break;
642	case WGL_RED_BITS_ARB:
643	case WGL_GREEN_BITS_ARB:
644	case WGL_BLUE_BITS_ARB:
645	case WGL_ALPHA_BITS_ARB:
646	pValues[i] = 8.f;
647	break;
648	case WGL_RED_SHIFT_ARB:
649	pValues[i] = 24.f;
650	break;
651	case WGL_GREEN_SHIFT_ARB:
652	pValues[i] = 16.f;
653	break;
654	case WGL_BLUE_SHIFT_ARB:
655	pValues[i] = 8.f;
656	break;
657	case WGL_ALPHA_SHIFT_ARB:
658	pValues[i] = 0.f;
659	break;
660	case WGL_ACCUM_BITS_ARB:
661	pValues[i] = 0.f;
662	break;
663	case WGL_ACCUM_RED_BITS_ARB:
664	pValues[i] = 0.f;
665	break;
666	case WGL_ACCUM_GREEN_BITS_ARB:
667	pValues[i] = 0.f;
668	break;
669	case WGL_ACCUM_BLUE_BITS_ARB:
670	pValues[i] = 0.f;
671	break;
672	case WGL_ACCUM_ALPHA_BITS_ARB:
673	pValues[i] = 0.f;
674	break;
675	case WGL_DEPTH_BITS_ARB:
676	pValues[i] = 32.f;
677	break;
678	case WGL_STENCIL_BITS_ARB:
679	pValues[i] = 8.f;
680	break;
681	case WGL_AUX_BUFFERS_ARB:
682	pValues[i] = 0.f;
683	break;
684	case WGL_SAMPLE_BUFFERS_EXT:
685	pValues[i] = 1.f;
686	break;
687	case WGL_SAMPLES_EXT:
688	pValues[i] = 1.f;
689	break;
690	default:
691	crWarning("wglGetPixelFormatAttribivARB: bad attrib=0x%x", piAttributes[i]);
692	return 0;
693	}
694	}
695
696	return 1;
697	}
698
699	BOOL WINAPI wglSwapIntervalEXT_prox(int interval)
700	{
701	return TRUE;
702	}
703
704	int WINAPI wglGetSwapIntervalEXT_prox()
705	{
706	return 1;
707	}
708
709	static GLubyte *gsz_wgl_extensions = "WGL_EXT_pixel_format WGL_ARB_pixel_format WGL_ARB_multisample";
710
711	const GLubyte * WINAPI wglGetExtensionsStringEXT_prox()
712	{
713	return gsz_wgl_extensions;
714	}
715
716	const GLubyte * WINAPI wglGetExtensionsStringARB_prox(HDC hdc)
717	{
718	(void) hdc;
719
720	return gsz_wgl_extensions;
721	}

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source: vbox/trunk/src/VBox/Additions/common/crOpenGL/wgl.c@ 28347

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