state_framebuffer.c@ 76553

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1	/* $Id: state_framebuffer.c 76553 2019-01-01 01:45:53Z vboxsync $ */
2
3	/** @file
4	* VBox OpenGL: EXT_framebuffer_object state tracking
5	*/
6
7	/*
8	* Copyright (C) 2009-2019 Oracle Corporation
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*/
18
19	#include "state.h"
20	#include "state/cr_statetypes.h"
21	#include "state/cr_statefuncs.h"
22	#include "state_internals.h"
23	#include "cr_mem.h"
24
25	DECLEXPORT(void) STATE_APIENTRY
26	crStateFramebufferObjectInit(CRContext *ctx)
27	{
28	CRFramebufferObjectState *fbo = &ctx->framebufferobject;
29
30	fbo->readFB = NULL;
31	fbo->drawFB = NULL;
32	fbo->renderbuffer = NULL;
33	ctx->shared->bFBOResyncNeeded = GL_FALSE;
34	}
35
36	void STATE_APIENTRY crStateGenFramebuffersEXT(GLsizei n, GLuint *buffers)
37	{
38	CRContext *g = GetCurrentContext();
39	crStateGenNames(g, g->shared->fbTable, n, buffers);
40	}
41
42	void STATE_APIENTRY crStateGenRenderbuffersEXT(GLsizei n, GLuint *buffers)
43	{
44	CRContext *g = GetCurrentContext();
45	crStateGenNames(g, g->shared->rbTable, n, buffers);
46	}
47
48	void crStateRegFramebuffers(GLsizei n, GLuint *buffers)
49	{
50	CRContext *g = GetCurrentContext();
51	crStateRegNames(g, g->shared->fbTable, n, buffers);
52	}
53
54	void crStateRegRenderbuffers(GLsizei n, GLuint *buffers)
55	{
56	CRContext *g = GetCurrentContext();
57	crStateRegNames(g, g->shared->rbTable, n, buffers);
58	}
59
60	static void crStateInitFrameBuffer(CRFramebufferObject *fbo);
61
62	static CRFramebufferObject *
63	crStateFramebufferAllocate(CRContext *ctx, GLuint name)
64	{
65	CRFramebufferObject buffer = (CRFramebufferObject) crCalloc(sizeof(CRFramebufferObject));
66	CRSTATE_CHECKERR_RET(!buffer, GL_OUT_OF_MEMORY, "crStateFramebufferAllocate", NULL);
67	buffer->id = name;
68	#ifndef IN_GUEST
69	diff_api.GenFramebuffersEXT(1, &buffer->hwid);
70	if (!buffer->hwid)
71	{
72	crWarning("GenFramebuffersEXT failed!");
73	crFree(buffer);
74	return NULL;
75	}
76	#else
77	buffer->hwid = name;
78	#endif
79
80	crStateInitFrameBuffer(buffer);
81	crHashtableAdd(ctx->shared->fbTable, name, buffer);
82	CR_STATE_SHAREDOBJ_USAGE_INIT(buffer);
83
84	return buffer;
85	}
86
87	static CRRenderbufferObject *
88	crStateRenderbufferAllocate(CRContext *ctx, GLuint name)
89	{
90	CRRenderbufferObject buffer = (CRRenderbufferObject) crCalloc(sizeof(CRRenderbufferObject));
91	CRSTATE_CHECKERR_RET(!buffer, GL_OUT_OF_MEMORY, "crStateRenderbufferAllocate", NULL);
92	buffer->id = name;
93	#ifndef IN_GUEST
94	diff_api.GenRenderbuffersEXT(1, &buffer->hwid);
95	if (!buffer->hwid)
96	{
97	crWarning("GenRenderbuffersEXT failed!");
98	crFree(buffer);
99	return NULL;
100	}
101	#else
102	buffer->hwid = name;
103	#endif
104
105	buffer->internalformat = GL_RGBA;
106	crHashtableAdd(ctx->shared->rbTable, name, buffer);
107	CR_STATE_SHAREDOBJ_USAGE_INIT(buffer);
108
109	return buffer;
110	}
111
112	void crStateFreeFBO(void *data)
113	{
114	CRFramebufferObject pObj = (CRFramebufferObject )data;
115
116	#ifndef IN_GUEST
117	if (diff_api.DeleteFramebuffersEXT)
118	{
119	diff_api.DeleteFramebuffersEXT(1, &pObj->hwid);
120	}
121	#endif
122
123	crFree(pObj);
124	}
125
126	void crStateFreeRBO(void *data)
127	{
128	CRRenderbufferObject pObj = (CRRenderbufferObject )data;
129
130	#ifndef IN_GUEST
131	if (diff_api.DeleteRenderbuffersEXT)
132	{
133	diff_api.DeleteRenderbuffersEXT(1, &pObj->hwid);
134	}
135	#endif
136
137	crFree(pObj);
138	}
139
140	DECLEXPORT(void) STATE_APIENTRY
141	crStateFramebufferObjectDestroy(CRContext *ctx)
142	{
143	CRFramebufferObjectState *fbo = &ctx->framebufferobject;
144
145	fbo->readFB = NULL;
146	fbo->drawFB = NULL;
147	fbo->renderbuffer = NULL;
148	}
149
150	DECLEXPORT(void) STATE_APIENTRY
151	crStateBindRenderbufferEXT(GLenum target, GLuint renderbuffer)
152	{
153	CRContext *g = GetCurrentContext();
154	CRFramebufferObjectState *fbo = &g->framebufferobject;
155
156	CRSTATE_CHECKERR(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end");
157	CRSTATE_CHECKERR(target!=GL_RENDERBUFFER_EXT, GL_INVALID_ENUM, "invalid target");
158
159	if (renderbuffer)
160	{
161	fbo->renderbuffer = (CRRenderbufferObject*) crHashtableSearch(g->shared->rbTable, renderbuffer);
162	if (!fbo->renderbuffer)
163	{
164	CRSTATE_CHECKERR(!crHashtableIsKeyUsed(g->shared->rbTable, renderbuffer), GL_INVALID_OPERATION, "name is not a renderbuffer");
165	fbo->renderbuffer = crStateRenderbufferAllocate(g, renderbuffer);
166	}
167	CR_STATE_SHAREDOBJ_USAGE_SET(fbo->renderbuffer, g);
168	}
169	else fbo->renderbuffer = NULL;
170	}
171
172	static void crStateCheckFBOAttachments(CRFramebufferObject *pFBO, GLuint rbo, GLenum target)
173	{
174	CRFBOAttachmentPoint *ap;
175	int u;
176
177	if (!pFBO)
178	return;
179
180	for (u=0; u<CR_MAX_COLOR_ATTACHMENTS; ++u)
181	{
182	ap = &pFBO->color[u];
183	if (ap->type==GL_RENDERBUFFER_EXT && ap->name==rbo)
184	{
185	crStateFramebufferRenderbufferEXT(target, u+GL_COLOR_ATTACHMENT0_EXT, 0, 0);
186	#ifdef IN_GUEST
187	pFBO->status = GL_FRAMEBUFFER_UNDEFINED;
188	#endif
189	}
190	}
191
192	ap = &pFBO->depth;
193	if (ap->type==GL_RENDERBUFFER_EXT && ap->name==rbo)
194	{
195	crStateFramebufferRenderbufferEXT(target, GL_DEPTH_ATTACHMENT_EXT, 0, 0);
196	#ifdef IN_GUEST
197	pFBO->status = GL_FRAMEBUFFER_UNDEFINED;
198	#endif
199	}
200	ap = &pFBO->stencil;
201	if (ap->type==GL_RENDERBUFFER_EXT && ap->name==rbo)
202	{
203	crStateFramebufferRenderbufferEXT(target, GL_STENCIL_ATTACHMENT_EXT, 0, 0);
204	#ifdef IN_GUEST
205	pFBO->status = GL_FRAMEBUFFER_UNDEFINED;
206	#endif
207	}
208	}
209
210	static void ctStateRenderbufferRefsCleanup(CRContext g, GLuint fboId, CRRenderbufferObject rbo)
211	{
212	CRFramebufferObjectState *fbo = &g->framebufferobject;
213
214	if (fbo->renderbuffer==rbo)
215	{
216	fbo->renderbuffer = NULL;
217	}
218
219	/* check the attachments of current framebuffers */
220	crStateCheckFBOAttachments(fbo->readFB, fboId, GL_READ_FRAMEBUFFER);
221	crStateCheckFBOAttachments(fbo->drawFB, fboId, GL_DRAW_FRAMEBUFFER);
222
223	CR_STATE_SHAREDOBJ_USAGE_CLEAR(rbo, g);
224	}
225
226	DECLEXPORT(void) STATE_APIENTRY
227	crStateDeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
228	{
229	CRContext *g = GetCurrentContext();
230	/CRFramebufferObjectState fbo = &g->framebufferobject; - unused */
231	int i;
232
233	CRSTATE_CHECKERR(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end");
234	CRSTATE_CHECKERR(n<0, GL_INVALID_OPERATION, "n<0");
235
236	for (i = 0; i < n; i++)
237	{
238	if (renderbuffers[i])
239	{
240	CRRenderbufferObject *rbo;
241	rbo = (CRRenderbufferObject*) crHashtableSearch(g->shared->rbTable, renderbuffers[i]);
242	if (rbo)
243	{
244	int j;
245
246	ctStateRenderbufferRefsCleanup(g, renderbuffers[i], rbo);
247	CR_STATE_SHAREDOBJ_USAGE_FOREACH_USED_IDX(rbo, j)
248	{
249	/* saved state version <= SHCROGL_SSM_VERSION_BEFORE_CTXUSAGE_BITS does not have usage bits info,
250	* so on restore, we set mark bits as used.
251	* This is why g_pAvailableContexts[j] could be NULL
252	* also g_pAvailableContexts[0] will hold default context, which we should discard */
253	CRContext *ctx = g_pAvailableContexts[j];
254	if (j && ctx)
255	{
256	CRFramebufferObjectState *ctxFbo;
257	CRASSERT(ctx);
258	ctxFbo = &ctx->framebufferobject;
259	if (ctxFbo->renderbuffer==rbo)
260	crWarning("deleting RBO being used by another context %d", ctx->id);
261
262	ctStateRenderbufferRefsCleanup(ctx, renderbuffers[i], rbo);
263	}
264	else
265	CR_STATE_SHAREDOBJ_USAGE_CLEAR_IDX(rbo, j);
266	}
267	crHashtableDelete(g->shared->rbTable, renderbuffers[i], crStateFreeRBO);
268	}
269	}
270	}
271	}
272
273	DECLEXPORT(void) STATE_APIENTRY
274	crStateRenderbufferStorageEXT(GLenum target, GLenum internalformat, GLsizei width, GLsizei height)
275	{
276	CRContext *g = GetCurrentContext();
277	CRFramebufferObjectState *fbo = &g->framebufferobject;
278	CRRenderbufferObject *rb = fbo->renderbuffer;
279
280	CRSTATE_CHECKERR(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end");
281	CRSTATE_CHECKERR(target!=GL_RENDERBUFFER_EXT, GL_INVALID_ENUM, "invalid target");
282	CRSTATE_CHECKERR(!rb, GL_INVALID_OPERATION, "no bound renderbuffer");
283
284	rb->width = width;
285	rb->height = height;
286	rb->internalformat = internalformat;
287	}
288
289	DECLEXPORT(void) STATE_APIENTRY
290	crStateGetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
291	{
292	CRContext *g = GetCurrentContext();
293	CRFramebufferObjectState *fbo = &g->framebufferobject;
294	CRRenderbufferObject *rb = fbo->renderbuffer;
295
296	CRSTATE_CHECKERR(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end");
297	CRSTATE_CHECKERR(target!=GL_RENDERBUFFER_EXT, GL_INVALID_ENUM, "invalid target");
298	CRSTATE_CHECKERR(!rb, GL_INVALID_OPERATION, "no bound renderbuffer");
299
300	switch (pname)
301	{
302	case GL_RENDERBUFFER_WIDTH_EXT:
303	*params = rb->width;
304	break;
305	case GL_RENDERBUFFER_HEIGHT_EXT:
306	*params = rb->height;
307	break;
308	case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
309	*params = rb->internalformat;
310	break;
311	case GL_RENDERBUFFER_RED_SIZE_EXT:
312	case GL_RENDERBUFFER_GREEN_SIZE_EXT:
313	case GL_RENDERBUFFER_BLUE_SIZE_EXT:
314	case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
315	case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
316	case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
317	CRSTATE_CHECKERR(GL_TRUE, GL_INVALID_OPERATION, "unimplemented");
318	break;
319	default:
320	CRSTATE_CHECKERR(GL_TRUE, GL_INVALID_ENUM, "invalid pname");
321	}
322	}
323
324	static void crStateInitFBOAttachmentPoint(CRFBOAttachmentPoint *fboap)
325	{
326	fboap->type = GL_NONE;
327	fboap->name = 0;
328	fboap->level = 0;
329	fboap->face = GL_TEXTURE_CUBE_MAP_POSITIVE_X;
330	fboap->zoffset = 0;
331	}
332
333	static void crStateInitFrameBuffer(CRFramebufferObject *fbo)
334	{
335	int i;
336
337	for (i=0; i<CR_MAX_COLOR_ATTACHMENTS; ++i)
338	crStateInitFBOAttachmentPoint(&fbo->color[i]);
339
340	crStateInitFBOAttachmentPoint(&fbo->depth);
341	crStateInitFBOAttachmentPoint(&fbo->stencil);
342
343	fbo->readbuffer = GL_COLOR_ATTACHMENT0_EXT;
344	fbo->drawbuffer[0] = GL_COLOR_ATTACHMENT0_EXT;
345
346	#ifdef IN_GUEST
347	fbo->status = GL_FRAMEBUFFER_UNDEFINED;
348	#endif
349	}
350
351	static GLboolean crStateGetFBOAttachmentPoint(CRFramebufferObject fb, GLenum attachment, CRFBOAttachmentPoint *ap)
352	{
353	switch (attachment)
354	{
355	case GL_DEPTH_ATTACHMENT_EXT:
356	*ap = &fb->depth;
357	break;
358	case GL_STENCIL_ATTACHMENT_EXT:
359	*ap = &fb->stencil;
360	break;
361	default:
362	if (attachment>=GL_COLOR_ATTACHMENT0_EXT && attachment<=GL_COLOR_ATTACHMENT15_EXT)
363	{
364	*ap = &fb->color[attachment-GL_COLOR_ATTACHMENT0_EXT];
365	}
366	else return GL_FALSE;
367	}
368
369	return GL_TRUE;
370	}
371
372	DECLEXPORT(void) STATE_APIENTRY
373	crStateBindFramebufferEXT(GLenum target, GLuint framebuffer)
374	{
375	CRContext *g = GetCurrentContext();
376	CRFramebufferObjectState *fbo = &g->framebufferobject;
377	CRFramebufferObject *pFBO=NULL;
378
379	CRSTATE_CHECKERR(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end");
380	CRSTATE_CHECKERR(((target!=GL_FRAMEBUFFER_EXT) && (target!=GL_READ_FRAMEBUFFER) && (target!=GL_DRAW_FRAMEBUFFER)),
381	GL_INVALID_ENUM, "invalid target");
382
383	if (framebuffer)
384	{
385	pFBO = (CRFramebufferObject*) crHashtableSearch(g->shared->fbTable, framebuffer);
386	if (!pFBO)
387	{
388	CRSTATE_CHECKERR(!crHashtableIsKeyUsed(g->shared->fbTable, framebuffer), GL_INVALID_OPERATION, "name is not a framebuffer");
389	pFBO = crStateFramebufferAllocate(g, framebuffer);
390	}
391
392
393	CR_STATE_SHAREDOBJ_USAGE_SET(pFBO, g);
394	}
395
396	/** @todo http://www.opengl.org/registry/specs/ARB/framebuffer_object.txt
397	* FBO status might change when binding a different FBO here...but I doubt it happens.
398	* So no status reset here until a proper check.
399	*/
400
401	switch (target)
402	{
403	case GL_FRAMEBUFFER_EXT:
404	fbo->readFB = pFBO;
405	fbo->drawFB = pFBO;
406	break;
407	case GL_READ_FRAMEBUFFER:
408	fbo->readFB = pFBO;
409	break;
410	case GL_DRAW_FRAMEBUFFER:
411	fbo->drawFB = pFBO;
412	break;
413	}
414	}
415
416	static void ctStateFramebufferRefsCleanup(CRContext g, CRFramebufferObject fb)
417	{
418	CRFramebufferObjectState *fbo = &g->framebufferobject;
419	if (fbo->readFB==fb)
420	{
421	fbo->readFB = NULL;
422	}
423	if (fbo->drawFB==fb)
424	{
425	fbo->drawFB = NULL;
426	}
427
428	CR_STATE_SHAREDOBJ_USAGE_CLEAR(fb, g);
429	}
430
431	DECLEXPORT(void) STATE_APIENTRY
432	crStateDeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
433	{
434	CRContext *g = GetCurrentContext();
435	int i;
436
437	CRSTATE_CHECKERR(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end");
438	CRSTATE_CHECKERR(n<0, GL_INVALID_OPERATION, "n<0");
439
440	for (i = 0; i < n; i++)
441	{
442	if (framebuffers[i])
443	{
444	CRFramebufferObject *fb;
445	fb = (CRFramebufferObject*) crHashtableSearch(g->shared->fbTable, framebuffers[i]);
446	if (fb)
447	{
448	int j;
449
450	ctStateFramebufferRefsCleanup(g, fb);
451
452	CR_STATE_SHAREDOBJ_USAGE_FOREACH_USED_IDX(fb, j)
453	{
454	/* saved state version <= SHCROGL_SSM_VERSION_BEFORE_CTXUSAGE_BITS does not have usage bits info,
455	* so on restore, we set mark bits as used.
456	* This is why g_pAvailableContexts[j] could be NULL
457	* also g_pAvailableContexts[0] will hold default context, which we should discard */
458	CRContext *ctx = g_pAvailableContexts[j];
459	if (j && ctx)
460	{
461	CRFramebufferObjectState *ctxFbo;
462	CRASSERT(ctx);
463	ctxFbo = &ctx->framebufferobject;
464	if (ctxFbo->readFB==fb)
465	crWarning("deleting FBO being used as read buffer by another context %d", ctx->id);
466
467	if (ctxFbo->drawFB==fb)
468	crWarning("deleting FBO being used as draw buffer by another context %d", ctx->id);
469
470	ctStateFramebufferRefsCleanup(ctx, fb);
471	}
472	else
473	CR_STATE_SHAREDOBJ_USAGE_CLEAR_IDX(fb, j);
474	}
475	crHashtableDelete(g->shared->fbTable, framebuffers[i], crStateFreeFBO);
476	}
477	}
478	}
479	}
480
481	/** @todo move this function somewhere else*/
482	/return floor of base 2 log of x. log(0)==0/
483	static unsigned int crLog2Floor(unsigned int x)
484	{
485	x \|= (x >> 1);
486	x \|= (x >> 2);
487	x \|= (x >> 4);
488	x \|= (x >> 8);
489	x \|= (x >> 16);
490	x -= ((x >> 1) & 0x55555555);
491	x = (((x >> 2) & 0x33333333) + (x & 0x33333333));
492	x = (((x >> 4) + x) & 0x0f0f0f0f);
493	x += (x >> 8);
494	x += (x >> 16);
495	return (x & 0x0000003f) - 1;
496	}
497
498	static GLuint crStateFramebufferGet(CRFramebufferObjectState fbo, GLenum target, CRFramebufferObject *apFBOs)
499	{
500	/** @todo Since this function returns not more than one FBO, callers can be cleaned up. */
501	GLuint cPBOs = 0;
502	switch (target)
503	{
504	case GL_READ_FRAMEBUFFER:
505	cPBOs = 1;
506	apFBOs[0] = fbo->readFB;
507	break;
508	/* OpenGL glFramebufferTexture, glFramebufferRenderbuffer, glFramebufferRenderbuffer specs:
509	* "GL_FRAMEBUFFER is equivalent to GL_DRAW_FRAMEBUFFER."
510	*/
511	case GL_FRAMEBUFFER:
512	case GL_DRAW_FRAMEBUFFER:
513	cPBOs = 1;
514	apFBOs[0] = fbo->drawFB;
515	break;
516	default:
517	crWarning("unexpected target value: 0x%x", target);
518	cPBOs = 0;
519	break;
520	}
521
522	return cPBOs;
523	}
524
525	static GLuint crStateFramebufferTextureCheck(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level,
526	CRFBOAttachmentPoint aap, CRTextureObj tobj)
527	{
528	CRContext *g = GetCurrentContext();
529	CRFramebufferObjectState *fbo = &g->framebufferobject;
530	CRFramebufferObject *apFBOs[2];
531	GLuint cFBOs = 0, i;
532	GLuint maxtexsizelog2;
533
534	CRSTATE_CHECKERR_RET(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end", 0);
535	CRSTATE_CHECKERR_RET(((target!=GL_FRAMEBUFFER_EXT) && (target!=GL_READ_FRAMEBUFFER) && (target!=GL_DRAW_FRAMEBUFFER)),
536	GL_INVALID_ENUM, "invalid target", 0);
537
538	cFBOs = crStateFramebufferGet(fbo, target, apFBOs);
539	CRSTATE_CHECKERR_RET(!cFBOs, GL_INVALID_ENUM, "unexpected target", 0);
540	for (i = 0; i < cFBOs; ++i)
541	{
542	CRSTATE_CHECKERR_RET(!apFBOs[i], GL_INVALID_OPERATION, "zero fbo bound", 0);
543	}
544
545	Assert(cFBOs);
546	Assert(cFBOs <= 2);
547
548	for (i = 0; i < cFBOs; ++i)
549	{
550	CRSTATE_CHECKERR_RET(!crStateGetFBOAttachmentPoint(apFBOs[i], attachment, &aap[i]), GL_INVALID_ENUM, "invalid attachment", 0);
551	}
552
553	if (!texture)
554	{
555	return cFBOs;
556	}
557
558	switch (textarget)
559	{
560	case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
561	case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
562	case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
563	case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
564	case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
565	case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
566	maxtexsizelog2 = crLog2Floor(g->limits.maxCubeMapTextureSize);
567	*tobj = crStateTextureGet(GL_TEXTURE_CUBE_MAP_ARB, texture);
568	break;
569	case GL_TEXTURE_RECTANGLE_ARB:
570	maxtexsizelog2 = 0;
571	*tobj = crStateTextureGet(textarget, texture);
572	break;
573	case GL_TEXTURE_3D:
574	maxtexsizelog2 = crLog2Floor(g->limits.max3DTextureSize);
575	*tobj = crStateTextureGet(textarget, texture);
576	break;
577	case GL_TEXTURE_2D:
578	case GL_TEXTURE_1D:
579	maxtexsizelog2 = crLog2Floor(g->limits.maxTextureSize);
580	*tobj = crStateTextureGet(textarget, texture);
581	break;
582	default:
583	CRSTATE_CHECKERR_RET(GL_TRUE, GL_INVALID_OPERATION, "invalid textarget", 0);
584	}
585
586	CRSTATE_CHECKERR_RET(!*tobj, GL_INVALID_OPERATION, "invalid textarget/texture combo", 0);
587
588	if (GL_TEXTURE_RECTANGLE_ARB==textarget)
589	{
590	CRSTATE_CHECKERR_RET(level!=0, GL_INVALID_VALUE, "non zero mipmap level", 0);
591	}
592
593	CRSTATE_CHECKERR_RET(level<0, GL_INVALID_VALUE, "level<0", 0);
594	CRSTATE_CHECKERR_RET((GLuint)level>maxtexsizelog2, GL_INVALID_VALUE, "level too big", 0);
595
596	#ifdef IN_GUEST
597	for (i = 0; i < cFBOs; ++i)
598	{
599	if ((aap[i])->type!=GL_TEXTURE \|\| (aap[i])->name!=texture \|\| (aap[i])->level!=level)
600	{
601	apFBOs[i]->status = GL_FRAMEBUFFER_UNDEFINED;
602	}
603	}
604	#endif
605
606	Assert(cFBOs);
607	Assert(cFBOs <= 2);
608
609	return cFBOs;
610	}
611
612	DECLEXPORT(void) STATE_APIENTRY
613	crStateFramebufferTexture1DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)
614	{
615	CRContext *g = GetCurrentContext();
616	/CRFramebufferObjectState fbo = &g->framebufferobject; - unused */
617	CRFBOAttachmentPoint *aap[2];
618	GLuint cap, i;
619	CRTextureObj *tobj;
620
621	cap = crStateFramebufferTextureCheck(target, attachment, textarget, texture, level, aap, &tobj);
622	if (!cap) return;
623
624	if (!texture)
625	{
626	for (i = 0; i < cap; ++i)
627	{
628	crStateInitFBOAttachmentPoint(aap[i]);
629	}
630	return;
631	}
632
633	CRSTATE_CHECKERR(textarget!=GL_TEXTURE_1D, GL_INVALID_OPERATION, "textarget");
634
635	CR_STATE_SHAREDOBJ_USAGE_SET(tobj, g);
636
637	for (i = 0; i < cap; ++i)
638	{
639	crStateInitFBOAttachmentPoint(aap[i]);
640	aap[i]->type = GL_TEXTURE;
641	aap[i]->name = texture;
642	aap[i]->level = level;
643	}
644	}
645
646	DECLEXPORT(void) STATE_APIENTRY
647	crStateFramebufferTexture2DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)
648	{
649	CRContext *g = GetCurrentContext();
650	/* CRFramebufferObjectState fbo = &g->framebufferobject; - unused /
651	CRFBOAttachmentPoint *aap[2];
652	GLuint cap, i;
653	CRTextureObj *tobj;
654
655	cap = crStateFramebufferTextureCheck(target, attachment, textarget, texture, level, aap, &tobj);
656	if (!cap) return;
657
658	if (!texture)
659	{
660	for (i = 0; i < cap; ++i)
661	{
662	crStateInitFBOAttachmentPoint(aap[i]);
663	}
664	return;
665	}
666
667	CRSTATE_CHECKERR(GL_TEXTURE_1D==textarget \|\| GL_TEXTURE_3D==textarget, GL_INVALID_OPERATION, "textarget");
668
669	CR_STATE_SHAREDOBJ_USAGE_SET(tobj, g);
670
671	for (i = 0; i < cap; ++i)
672	{
673	crStateInitFBOAttachmentPoint(aap[i]);
674	aap[i]->type = GL_TEXTURE;
675	aap[i]->name = texture;
676	aap[i]->level = level;
677	if (textarget!=GL_TEXTURE_2D && textarget!=GL_TEXTURE_RECTANGLE_ARB)
678	{
679	aap[i]->face = textarget;
680	}
681	}
682	}
683
684	DECLEXPORT(void) STATE_APIENTRY
685	crStateFramebufferTexture3DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset)
686	{
687	CRContext *g = GetCurrentContext();
688	/* CRFramebufferObjectState fbo = &g->framebufferobject; - unused /
689	CRFBOAttachmentPoint *aap[2];
690	GLuint cap, i;
691	CRTextureObj *tobj;
692
693	cap = crStateFramebufferTextureCheck(target, attachment, textarget, texture, level, aap, &tobj);
694	if (!cap) return;
695
696	if (!texture)
697	{
698	for (i = 0; i < cap; ++i)
699	{
700	crStateInitFBOAttachmentPoint(aap[i]);
701	}
702	return;
703	}
704
705	CRSTATE_CHECKERR(zoffset>((GLint)g->limits.max3DTextureSize-1), GL_INVALID_VALUE, "zoffset too big");
706	CRSTATE_CHECKERR(textarget!=GL_TEXTURE_3D, GL_INVALID_OPERATION, "textarget");
707
708	CR_STATE_SHAREDOBJ_USAGE_SET(tobj, g);
709
710	for (i = 0; i < cap; ++i)
711	{
712	crStateInitFBOAttachmentPoint(aap[i]);
713	aap[i]->type = GL_TEXTURE;
714	aap[i]->name = texture;
715	aap[i]->level = level;
716	aap[i]->zoffset = zoffset;
717	}
718	}
719
720	DECLEXPORT(void) STATE_APIENTRY
721	crStateFramebufferRenderbufferEXT(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)
722	{
723	CRContext *g = GetCurrentContext();
724	CRFramebufferObjectState *fbo = &g->framebufferobject;
725	CRFramebufferObject *apFBOs[2];
726	GLuint cFBOs, i;
727	CRFBOAttachmentPoint *aap[2];
728	CRRenderbufferObject *rb;
729	(void)renderbuffertarget;
730
731	CRSTATE_CHECKERR(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end");
732	CRSTATE_CHECKERR(((target!=GL_FRAMEBUFFER_EXT) && (target!=GL_READ_FRAMEBUFFER) && (target!=GL_DRAW_FRAMEBUFFER)),
733	GL_INVALID_ENUM, "invalid target");
734	cFBOs = crStateFramebufferGet(fbo, target, apFBOs);
735	CRSTATE_CHECKERR(!cFBOs, GL_INVALID_OPERATION, "no fbo bound");
736	for (i = 0; i < cFBOs; ++i)
737	{
738	CRSTATE_CHECKERR(!apFBOs[i], GL_INVALID_OPERATION, "zero fbo bound");
739	}
740
741	for (i = 0; i < cFBOs; ++i)
742	{
743	CRSTATE_CHECKERR(!crStateGetFBOAttachmentPoint(apFBOs[i], attachment, &aap[i]), GL_INVALID_ENUM, "invalid attachment");
744	}
745
746	if (!renderbuffer)
747	{
748	for (i = 0; i < cFBOs; ++i)
749	{
750	#ifdef IN_GUEST
751	if (&aap[i]->type!=GL_NONE)
752	{
753	apFBOs[i]->status = GL_FRAMEBUFFER_UNDEFINED;
754	}
755	#endif
756	crStateInitFBOAttachmentPoint(aap[i]);
757	}
758	return;
759	}
760
761	rb = (CRRenderbufferObject*) crHashtableSearch(g->shared->rbTable, renderbuffer);
762	if (!rb)
763	{
764	CRSTATE_CHECKERR(!crHashtableIsKeyUsed(g->shared->rbTable, renderbuffer), GL_INVALID_OPERATION, "rb doesn't exist");
765	rb = crStateRenderbufferAllocate(g, renderbuffer);
766	}
767
768	CR_STATE_SHAREDOBJ_USAGE_SET(rb, g);
769
770	for (i = 0; i < cFBOs; ++i)
771	{
772	#ifdef IN_GUEST
773	if (aap[i]->type!=GL_RENDERBUFFER_EXT \|\| aap[i]->name!=renderbuffer)
774	{
775	apFBOs[i]->status = GL_FRAMEBUFFER_UNDEFINED;
776	}
777	#endif
778	crStateInitFBOAttachmentPoint(aap[i]);
779	aap[i]->type = GL_RENDERBUFFER_EXT;
780	aap[i]->name = renderbuffer;
781	}
782	}
783
784	DECLEXPORT(void) STATE_APIENTRY
785	crStateGetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment, GLenum pname, GLint *params)
786	{
787	CRContext *g = GetCurrentContext();
788	CRFramebufferObjectState *fbo = &g->framebufferobject;
789	CRFramebufferObject *apFBOs[2];
790	GLint cFBOs = 0, i;
791	CRFBOAttachmentPoint *ap;
792
793	CRSTATE_CHECKERR(g->current.inBeginEnd, GL_INVALID_OPERATION, "called in begin/end");
794	CRSTATE_CHECKERR(((target!=GL_FRAMEBUFFER_EXT) && (target!=GL_READ_FRAMEBUFFER) && (target!=GL_DRAW_FRAMEBUFFER)),
795	GL_INVALID_ENUM, "invalid target");
796
797	cFBOs = crStateFramebufferGet(fbo, target, apFBOs);
798
799	CRSTATE_CHECKERR(!cFBOs, GL_INVALID_OPERATION, "no fbo bound");
800	for (i = 0; i < cFBOs; ++i)
801	{
802	CRSTATE_CHECKERR(!apFBOs[i], GL_INVALID_OPERATION, "zero fbo bound");
803	}
804
805	if(cFBOs != 1)
806	{
807	crWarning("different FBPs attached to draw and read buffers, returning info for the read buffer");
808	}
809
810	for (i = 0; i < 1; ++i)
811	{
812	CRSTATE_CHECKERR(!crStateGetFBOAttachmentPoint(apFBOs[i], attachment, &ap), GL_INVALID_ENUM, "invalid attachment");
813
814	switch (pname)
815	{
816	case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
817	*params = ap->type;
818	break;
819	case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
820	CRSTATE_CHECKERR(ap->type!=GL_RENDERBUFFER_EXT && ap->type!=GL_TEXTURE, GL_INVALID_ENUM, "can't query object name when it's not bound")
821	*params = ap->name;
822	break;
823	case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
824	CRSTATE_CHECKERR(ap->type!=GL_TEXTURE, GL_INVALID_ENUM, "not a texture");
825	*params = ap->level;
826	break;
827	case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
828	CRSTATE_CHECKERR(ap->type!=GL_TEXTURE, GL_INVALID_ENUM, "not a texture");
829	*params = ap->face;
830	break;
831	case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
832	CRSTATE_CHECKERR(ap->type!=GL_TEXTURE, GL_INVALID_ENUM, "not a texture");
833	*params = ap->zoffset;
834	break;
835	default:
836	CRSTATE_CHECKERR(GL_TRUE, GL_INVALID_ENUM, "invalid pname");
837	}
838	}
839	}
840
841	DECLEXPORT(GLboolean) STATE_APIENTRY crStateIsFramebufferEXT( GLuint framebuffer )
842	{
843	CRContext *g = GetCurrentContext();
844
845	FLUSH();
846
847	if (g->current.inBeginEnd) {
848	crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
849	"glIsFramebufferEXT called in begin/end");
850	return GL_FALSE;
851	}
852
853	return framebuffer ? crHashtableIsKeyUsed(g->shared->fbTable, framebuffer) : GL_FALSE;
854	}
855
856	DECLEXPORT(GLboolean) STATE_APIENTRY crStateIsRenderbufferEXT( GLuint renderbuffer )
857	{
858	CRContext *g = GetCurrentContext();
859
860
861	FLUSH();
862
863	if (g->current.inBeginEnd) {
864	crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
865	"glIsRenderbufferEXT called in begin/end");
866	return GL_FALSE;
867	}
868
869	return renderbuffer ? crHashtableIsKeyUsed(g->shared->rbTable, renderbuffer) : GL_FALSE;
870	}
871
872	DECLEXPORT(void) STATE_APIENTRY
873	crStateGenerateMipmapEXT(GLenum target)
874	{
875	(void)target;
876	/** @todo */
877	}
878
879	static void crStateSyncRenderbuffersCB(unsigned long key, void data1, void data2)
880	{
881	CRRenderbufferObject pRBO = (CRRenderbufferObject) data1;
882	(void)key; (void)data2;
883
884	diff_api.GenRenderbuffersEXT(1, &pRBO->hwid);
885
886	if (pRBO->width && pRBO->height)
887	{
888	diff_api.BindRenderbufferEXT(GL_RENDERBUFFER_EXT, pRBO->hwid);
889	diff_api.RenderbufferStorageEXT(GL_RENDERBUFFER_EXT, pRBO->internalformat, pRBO->width, pRBO->height);
890	}
891	}
892
893	static void crStateSyncAP(CRFBOAttachmentPoint pAP, GLenum ap, CRContext ctx)
894	{
895	CRRenderbufferObject *pRBO;
896	CRTextureObj *tobj;
897
898	switch (pAP->type)
899	{
900	case GL_TEXTURE:
901	CRASSERT(pAP->name!=0);
902
903	tobj = (CRTextureObj *) crHashtableSearch(ctx->shared->textureTable, pAP->name);
904	if (tobj)
905	{
906	CRASSERT(!tobj->id \|\| tobj->hwid);
907
908	switch (tobj->target)
909	{
910	case GL_TEXTURE_1D:
911	diff_api.FramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT, ap, tobj->target, crStateGetTextureObjHWID(tobj), pAP->level);
912	break;
913	case GL_TEXTURE_2D:
914	case GL_TEXTURE_RECTANGLE_ARB:
915	diff_api.FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, ap, tobj->target, crStateGetTextureObjHWID(tobj), pAP->level);
916	break;
917	case GL_TEXTURE_CUBE_MAP_ARB:
918	diff_api.FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, ap, pAP->face, crStateGetTextureObjHWID(tobj), pAP->level);
919	break;
920	case GL_TEXTURE_3D:
921	diff_api.FramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT, ap, tobj->target, crStateGetTextureObjHWID(tobj), pAP->level, pAP->zoffset);
922	break;
923	default:
924	crWarning("Unexpected textarget %d", tobj->target);
925	}
926	}
927	else
928	{
929	crWarning("Unknown texture id %d", pAP->name);
930	}
931	break;
932	case GL_RENDERBUFFER_EXT:
933	pRBO = (CRRenderbufferObject*) crHashtableSearch(ctx->shared->rbTable, pAP->name);
934	diff_api.FramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, ap, GL_RENDERBUFFER_EXT, pRBO->hwid);
935	break;
936	case GL_NONE:
937	/* Intentionally left blank */
938	break;
939	default: crWarning("Invalid attachment point type %d (ap: %i)", pAP->type, ap);
940	}
941	}
942
943	static void crStateSyncFramebuffersCB(unsigned long key, void data1, void data2)
944	{
945	CRFramebufferObject pFBO = (CRFramebufferObject) data1;
946	CRContext ctx = (CRContext) data2;
947	GLint i;
948	(void)key;
949
950	diff_api.GenFramebuffersEXT(1, &pFBO->hwid);
951
952	diff_api.BindFramebufferEXT(GL_FRAMEBUFFER_EXT, pFBO->hwid);
953
954	for (i=0; i<CR_MAX_COLOR_ATTACHMENTS; ++i)
955	{
956	crStateSyncAP(&pFBO->color[i], GL_COLOR_ATTACHMENT0_EXT+i, ctx);
957	}
958
959	crStateSyncAP(&pFBO->depth, GL_DEPTH_ATTACHMENT_EXT, ctx);
960	crStateSyncAP(&pFBO->stencil, GL_STENCIL_ATTACHMENT_EXT, ctx);
961	}
962
963	DECLEXPORT(void) STATE_APIENTRY
964	crStateFramebufferObjectSwitch(CRContext from, CRContext to)
965	{
966	if (to->shared->bFBOResyncNeeded)
967	{
968	to->shared->bFBOResyncNeeded = GL_FALSE;
969
970	crHashtableWalk(to->shared->rbTable, crStateSyncRenderbuffersCB, NULL);
971	crHashtableWalk(to->shared->fbTable, crStateSyncFramebuffersCB, to);
972
973	if (to->framebufferobject.drawFB==to->framebufferobject.readFB)
974	{
975	diff_api.BindFramebufferEXT(GL_FRAMEBUFFER_EXT, to->framebufferobject.drawFB?
976	to->framebufferobject.drawFB->hwid:0);
977	}
978	else
979	{
980	diff_api.BindFramebufferEXT(GL_DRAW_FRAMEBUFFER, to->framebufferobject.drawFB?
981	to->framebufferobject.drawFB->hwid:0);
982
983	diff_api.BindFramebufferEXT(GL_READ_FRAMEBUFFER, to->framebufferobject.readFB?
984	to->framebufferobject.readFB->hwid:0);
985	}
986
987	diff_api.BindRenderbufferEXT(GL_RENDERBUFFER_EXT, to->framebufferobject.renderbuffer?
988	to->framebufferobject.renderbuffer->hwid:0);
989	}
990	else
991	{
992	if (to->framebufferobject.drawFB!=from->framebufferobject.drawFB
993	\|\| to->framebufferobject.readFB!=from->framebufferobject.readFB)
994	{
995	if (to->framebufferobject.drawFB==to->framebufferobject.readFB)
996	{
997	diff_api.BindFramebufferEXT(GL_FRAMEBUFFER_EXT, to->framebufferobject.drawFB?
998	to->framebufferobject.drawFB->hwid:0);
999	}
1000	else
1001	{
1002	diff_api.BindFramebufferEXT(GL_DRAW_FRAMEBUFFER, to->framebufferobject.drawFB?
1003	to->framebufferobject.drawFB->hwid:0);
1004
1005	diff_api.BindFramebufferEXT(GL_READ_FRAMEBUFFER, to->framebufferobject.readFB?
1006	to->framebufferobject.readFB->hwid:0);
1007	}
1008
1009	diff_api.DrawBuffer(to->framebufferobject.drawFB?to->framebufferobject.drawFB->drawbuffer[0]:to->buffer.drawBuffer);
1010	diff_api.ReadBuffer(to->framebufferobject.readFB?to->framebufferobject.readFB->readbuffer:to->buffer.readBuffer);
1011	}
1012
1013	if (to->framebufferobject.renderbuffer!=from->framebufferobject.renderbuffer)
1014	{
1015	diff_api.BindRenderbufferEXT(GL_RENDERBUFFER_EXT, to->framebufferobject.renderbuffer?
1016	to->framebufferobject.renderbuffer->hwid:0);
1017	}
1018	}
1019	}
1020
1021	DECLEXPORT(void) STATE_APIENTRY
1022	crStateFramebufferObjectDisableHW(CRContext *ctx, GLuint idDrawFBO, GLuint idReadFBO)
1023	{
1024	GLenum idDrawBuffer = 0, idReadBuffer = 0;
1025
1026	if (ctx->framebufferobject.drawFB \|\| idDrawFBO)
1027	{
1028	diff_api.BindFramebufferEXT(GL_DRAW_FRAMEBUFFER, 0);
1029	idDrawBuffer = ctx->buffer.drawBuffer;
1030	}
1031
1032	if (ctx->framebufferobject.readFB \|\| idReadFBO)
1033	{
1034	diff_api.BindFramebufferEXT(GL_READ_FRAMEBUFFER, 0);
1035	idReadBuffer = ctx->buffer.readBuffer;
1036	}
1037
1038	if (idDrawBuffer)
1039	diff_api.DrawBuffer(idDrawBuffer);
1040	if (idReadBuffer)
1041	diff_api.ReadBuffer(idReadBuffer);
1042
1043	if (ctx->framebufferobject.renderbuffer)
1044	diff_api.BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
1045	}
1046
1047	DECLEXPORT(void) STATE_APIENTRY
1048	crStateFramebufferObjectReenableHW(CRContext fromCtx, CRContext toCtx, GLuint idDrawFBO, GLuint idReadFBO)
1049	{
1050	GLuint idReadBuffer = 0, idDrawBuffer = 0;
1051	if (!fromCtx)
1052	fromCtx = toCtx; /* <- in case fromCtx is zero, set it to toCtx to ensure framebuffer state gets re-enabled correctly */
1053
1054	if ((fromCtx->framebufferobject.drawFB) /* <- the FBO state was reset in crStateFramebufferObjectDisableHW */
1055	&& fromCtx->framebufferobject.drawFB == toCtx->framebufferobject.drawFB) /* .. and it was NOT restored properly in crStateFramebufferObjectSwitch */
1056	{
1057	diff_api.BindFramebufferEXT(GL_DRAW_FRAMEBUFFER, toCtx->framebufferobject.drawFB->hwid);
1058	idDrawBuffer = toCtx->framebufferobject.drawFB->drawbuffer[0];
1059	}
1060	else if (idDrawFBO && !toCtx->framebufferobject.drawFB)
1061	{
1062	diff_api.BindFramebufferEXT(GL_DRAW_FRAMEBUFFER, idDrawFBO);
1063	idDrawBuffer = GL_COLOR_ATTACHMENT0;
1064	}
1065
1066	if ((fromCtx->framebufferobject.readFB) /* <- the FBO state was reset in crStateFramebufferObjectDisableHW */
1067	&& fromCtx->framebufferobject.readFB == toCtx->framebufferobject.readFB) /* .. and it was NOT restored properly in crStateFramebufferObjectSwitch */
1068	{
1069	diff_api.BindFramebufferEXT(GL_READ_FRAMEBUFFER, toCtx->framebufferobject.readFB->hwid);
1070	idReadBuffer = toCtx->framebufferobject.readFB->readbuffer;
1071	}
1072	else if (idReadFBO && !toCtx->framebufferobject.readFB)
1073	{
1074	diff_api.BindFramebufferEXT(GL_READ_FRAMEBUFFER, idReadFBO);
1075	idReadBuffer = GL_COLOR_ATTACHMENT0;
1076	}
1077
1078	if (idDrawBuffer)
1079	diff_api.DrawBuffer(idDrawBuffer);
1080	if (idReadBuffer)
1081	diff_api.ReadBuffer(idReadBuffer);
1082
1083	if (fromCtx->framebufferobject.renderbuffer /* <- the FBO state was reset in crStateFramebufferObjectDisableHW */
1084	&& fromCtx->framebufferobject.renderbuffer==toCtx->framebufferobject.renderbuffer) /* .. and it was NOT restored properly in crStateFramebufferObjectSwitch */
1085	{
1086	diff_api.BindRenderbufferEXT(GL_RENDERBUFFER_EXT, toCtx->framebufferobject.renderbuffer->hwid);
1087	}
1088	}
1089
1090
1091	DECLEXPORT(GLuint) STATE_APIENTRY crStateGetFramebufferHWID(GLuint id)
1092	{
1093	CRContext *g = GetCurrentContext();
1094	CRFramebufferObject pFBO = (CRFramebufferObject) crHashtableSearch(g->shared->fbTable, id);
1095	#if 0 /def DEBUG_misha/
1096	crDebug("FB id(%d) hw(%d)", id, pFBO ? pFBO->hwid : 0);
1097	#endif
1098	return pFBO ? pFBO->hwid : 0;
1099	}
1100
1101	DECLEXPORT(GLuint) STATE_APIENTRY crStateGetRenderbufferHWID(GLuint id)
1102	{
1103	CRContext *g = GetCurrentContext();
1104	CRRenderbufferObject pRBO = (CRRenderbufferObject) crHashtableSearch(g->shared->rbTable, id);
1105
1106	return pRBO ? pRBO->hwid : 0;
1107	}
1108
1109	static void crStateCheckFBOHWIDCB(unsigned long key, void data1, void data2)
1110	{
1111	CRFramebufferObject pFBO = (CRFramebufferObject ) data1;
1112	crCheckIDHWID_t pParms = (crCheckIDHWID_t) data2;
1113	(void) key;
1114
1115	if (pFBO->hwid==pParms->hwid)
1116	pParms->id = pFBO->id;
1117	}
1118
1119	static void crStateCheckRBOHWIDCB(unsigned long key, void data1, void data2)
1120	{
1121	CRRenderbufferObject pRBO = (CRRenderbufferObject ) data1;
1122	crCheckIDHWID_t pParms = (crCheckIDHWID_t) data2;
1123	(void) key;
1124
1125	if (pRBO->hwid==pParms->hwid)
1126	pParms->id = pRBO->id;
1127	}
1128
1129	DECLEXPORT(GLuint) STATE_APIENTRY crStateFBOHWIDtoID(GLuint hwid)
1130	{
1131	CRContext *g = GetCurrentContext();
1132	crCheckIDHWID_t parms;
1133
1134	parms.id = hwid;
1135	parms.hwid = hwid;
1136
1137	crHashtableWalk(g->shared->fbTable, crStateCheckFBOHWIDCB, &parms);
1138	return parms.id;
1139	}
1140
1141	DECLEXPORT(GLuint) STATE_APIENTRY crStateRBOHWIDtoID(GLuint hwid)
1142	{
1143	CRContext *g = GetCurrentContext();
1144	crCheckIDHWID_t parms;
1145
1146	parms.id = hwid;
1147	parms.hwid = hwid;
1148
1149	crHashtableWalk(g->shared->rbTable, crStateCheckRBOHWIDCB, &parms);
1150	return parms.id;
1151	}
1152
1153	#ifdef IN_GUEST
1154	DECLEXPORT(GLenum) STATE_APIENTRY crStateCheckFramebufferStatusEXT(GLenum target)
1155	{
1156	GLenum status = GL_FRAMEBUFFER_UNDEFINED;
1157	CRContext *g = GetCurrentContext();
1158	CRFramebufferObjectState *fbo = &g->framebufferobject;
1159	CRFramebufferObject *pFBO=NULL;
1160
1161	switch (target)
1162	{
1163	case GL_FRAMEBUFFER_EXT:
1164	pFBO = fbo->drawFB;
1165	break;
1166	case GL_READ_FRAMEBUFFER:
1167	pFBO = fbo->readFB;
1168	break;
1169	case GL_DRAW_FRAMEBUFFER:
1170	pFBO = fbo->drawFB;
1171	break;
1172	}
1173
1174	if (pFBO) status = pFBO->status;
1175
1176	return status;
1177	}
1178
1179	DECLEXPORT(GLenum) STATE_APIENTRY crStateSetFramebufferStatus(GLenum target, GLenum status)
1180	{
1181	CRContext *g = GetCurrentContext();
1182	CRFramebufferObjectState *fbo = &g->framebufferobject;
1183	CRFramebufferObject *pFBO=NULL;
1184
1185	switch (target)
1186	{
1187	case GL_FRAMEBUFFER_EXT:
1188	pFBO = fbo->drawFB;
1189	break;
1190	case GL_READ_FRAMEBUFFER:
1191	pFBO = fbo->readFB;
1192	break;
1193	case GL_DRAW_FRAMEBUFFER:
1194	pFBO = fbo->drawFB;
1195	break;
1196	}
1197
1198	if (pFBO) pFBO->status = status;
1199
1200	return status;
1201	}
1202	#endif

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source: vbox/trunk/src/VBox/GuestHost/OpenGL/state_tracker/state_framebuffer.c@ 76553

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