context.c@ 55618

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3D: Additions code: small adjustments.
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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	/**
8	* \mainpage OpenGL_stub
9	*
10	* \section OpenGL_stubIntroduction Introduction
11	*
12	* Chromium consists of all the top-level files in the cr
13	* directory. The OpenGL_stub module basically takes care of API dispatch,
14	* and OpenGL state management.
15	*
16	*/
17
18	/**
19	* This file manages OpenGL rendering contexts in the faker library.
20	* The big issue is switching between Chromium and native GL context
21	* management. This is where we support multiple client OpenGL
22	* windows. Typically, one window is handled by Chromium while any
23	* other windows are handled by the native OpenGL library.
24	*/
25
26	#include "chromium.h"
27	#include "cr_error.h"
28	#include "cr_spu.h"
29	#include "cr_mem.h"
30	#include "cr_string.h"
31	#include "cr_environment.h"
32	#include "stub.h"
33
34	/**
35	* This function should be called from MakeCurrent(). It'll detect if
36	* we're in a multi-thread situation, and do the right thing for dispatch.
37	*/
38	#ifdef CHROMIUM_THREADSAFE
39	static void
40	stubCheckMultithread( void )
41	{
42	static unsigned long knownID;
43	static GLboolean firstCall = GL_TRUE;
44
45	if (stub.threadSafe)
46	return; /* nothing new, nothing to do */
47
48	if (firstCall) {
49	knownID = crThreadID();
50	firstCall = GL_FALSE;
51	}
52	else if (knownID != crThreadID()) {
53	/* going thread-safe now! */
54	stub.threadSafe = GL_TRUE;
55	crSPUCopyDispatchTable(&glim, &stubThreadsafeDispatch);
56	}
57	}
58	#endif
59
60
61	/**
62	* Install the given dispatch table as the table used for all gl* calls.
63	*/
64	static void
65	stubSetDispatch( SPUDispatchTable *table )
66	{
67	CRASSERT(table);
68
69	#ifdef CHROMIUM_THREADSAFE
70	/* always set the per-thread dispatch pointer */
71	crSetTSD(&stub.dispatchTSD, (void *) table);
72	if (stub.threadSafe) {
73	/* Do nothing - the thread-safe dispatch functions will call GetTSD()
74	* to get a pointer to the dispatch table, and jump through it.
75	*/
76	}
77	else
78	#endif
79	{
80	/* Single thread mode - just install the caller's dispatch table */
81	/* This conditional is an optimization to try to avoid unnecessary
82	* copying. It seems to work with atlantis, multiwin, etc. but
83	* _could_ be a problem. (Brian)
84	*/
85	if (glim.copy_of != table->copy_of)
86	crSPUCopyDispatchTable(&glim, table);
87	}
88	}
89
90	void stubForcedFlush(GLint con)
91	{
92	#if 0
93	GLint buffer;
94	stub.spu->dispatch_table.GetIntegerv(GL_DRAW_BUFFER, &buffer);
95	stub.spu->dispatch_table.DrawBuffer(GL_FRONT);
96	stub.spu->dispatch_table.Flush();
97	stub.spu->dispatch_table.DrawBuffer(buffer);
98	#else
99	if (con)
100	{
101	stub.spu->dispatch_table.VBoxConFlush(con);
102	}
103	else
104	{
105	stub.spu->dispatch_table.Flush();
106	}
107	#endif
108	}
109
110	void stubConChromiumParameteriCR(GLint con, GLenum param, GLint value)
111	{
112	// if (con)
113	stub.spu->dispatch_table.VBoxConChromiumParameteriCR(con, param, value);
114	// else
115	// crError("VBoxConChromiumParameteriCR called with null connection");
116	}
117
118	void stubConChromiumParametervCR(GLint con, GLenum target, GLenum type, GLsizei count, const GLvoid *values)
119	{
120	// if (con)
121	stub.spu->dispatch_table.VBoxConChromiumParametervCR(con, target, type, count, values);
122	// else
123	// crError("VBoxConChromiumParameteriCR called with null connection");
124	}
125
126	void stubConFlush(GLint con)
127	{
128	if (con)
129	stub.spu->dispatch_table.VBoxConFlush(con);
130	else
131	crError("stubConFlush called with null connection");
132	}
133
134	static void stubWindowCleanupForContextsCB(unsigned long key, void data1, void data2)
135	{
136	ContextInfo context = (ContextInfo ) data1;
137
138	CRASSERT(context);
139
140	if (context->currentDrawable == data2)
141	context->currentDrawable = NULL;
142	}
143
144	void stubDestroyWindow( GLint con, GLint window )
145	{
146	WindowInfo winInfo = (WindowInfo )
147	crHashtableSearch(stub.windowTable, (unsigned int) window);
148	if (winInfo && winInfo->type == CHROMIUM && stub.spu)
149	{
150	crHashtableLock(stub.windowTable);
151
152	stub.spu->dispatch_table.VBoxWindowDestroy(con, winInfo->spuWindow );
153
154	#ifdef WINDOWS
155	if (winInfo->hVisibleRegion != INVALID_HANDLE_VALUE)
156	{
157	DeleteObject(winInfo->hVisibleRegion);
158	}
159	#elif defined(GLX)
160	if (winInfo->pVisibleRegions)
161	{
162	XFree(winInfo->pVisibleRegions);
163	}
164	# ifdef CR_NEWWINTRACK
165	if (winInfo->syncDpy)
166	{
167	XCloseDisplay(winInfo->syncDpy);
168	}
169	# endif
170	#endif
171
172	stubForcedFlush(con);
173
174	crHashtableWalk(stub.contextTable, stubWindowCleanupForContextsCB, winInfo);
175
176	crHashtableDelete(stub.windowTable, window, crFree);
177
178	crHashtableUnlock(stub.windowTable);
179	}
180	}
181
182	/**
183	* Create a new _Chromium_ window, not GLX, WGL or CGL.
184	* Called by crWindowCreate() only.
185	*/
186	GLint
187	stubNewWindow( const char *dpyName, GLint visBits )
188	{
189	WindowInfo *winInfo;
190	GLint spuWin, size[2];
191
192	spuWin = stub.spu->dispatch_table.WindowCreate( dpyName, visBits );
193	if (spuWin < 0) {
194	return -1;
195	}
196
197	winInfo = (WindowInfo *) crCalloc(sizeof(WindowInfo));
198	if (!winInfo) {
199	stub.spu->dispatch_table.WindowDestroy(spuWin);
200	return -1;
201	}
202
203	winInfo->type = CHROMIUM;
204
205	/* Ask the head SPU for the initial window size */
206	size[0] = size[1] = 0;
207	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, 0, GL_INT, 2, size);
208	if (size[0] == 0 && size[1] == 0) {
209	/* use some reasonable defaults */
210	size[0] = size[1] = 512;
211	}
212	winInfo->width = size[0];
213	winInfo->height = size[1];
214	#ifdef VBOX_WITH_WDDM
215	if (stub.bRunningUnderWDDM)
216	{
217	crError("Should not be here: WindowCreate/Destroy & VBoxPackGetInjectID require connection id!");
218	winInfo->mapped = 0;
219	}
220	else
221	#endif
222	{
223	winInfo->mapped = 1;
224	}
225
226	if (!dpyName)
227	dpyName = "";
228
229	crStrncpy(winInfo->dpyName, dpyName, MAX_DPY_NAME);
230	winInfo->dpyName[MAX_DPY_NAME-1] = 0;
231
232	/* Use spuWin as the hash table index and GLX/WGL handle */
233	#ifdef WINDOWS
234	winInfo->drawable = (HDC) spuWin;
235	winInfo->hVisibleRegion = INVALID_HANDLE_VALUE;
236	#elif defined(Darwin)
237	winInfo->drawable = (CGSWindowID) spuWin;
238	#elif defined(GLX)
239	winInfo->drawable = (GLXDrawable) spuWin;
240	winInfo->pVisibleRegions = NULL;
241	winInfo->cVisibleRegions = 0;
242	#endif
243	#ifdef CR_NEWWINTRACK
244	winInfo->u32ClientID = stub.spu->dispatch_table.VBoxPackGetInjectID(0);
245	#endif
246	winInfo->spuWindow = spuWin;
247
248	crHashtableAdd(stub.windowTable, (unsigned int) spuWin, winInfo);
249
250	return spuWin;
251	}
252
253	#ifdef GLX
254	static XErrorHandler oldErrorHandler;
255	static unsigned char lastXError = Success;
256
257	static int
258	errorHandler (Display dpy, XErrorEvent e)
259	{
260	lastXError = e->error_code;
261	return 0;
262	}
263	#endif
264
265	GLboolean
266	stubIsWindowVisible(WindowInfo *win)
267	{
268	#if defined(WINDOWS)
269	# ifdef VBOX_WITH_WDDM
270	if (stub.bRunningUnderWDDM)
271	return win->mapped;
272	# endif
273	return GL_TRUE;
274	#elif defined(Darwin)
275	return GL_TRUE;
276	#elif defined(GLX)
277	Display *dpy = stubGetWindowDisplay(win);
278	if (dpy)
279	{
280	XWindowAttributes attr;
281	XLOCK(dpy);
282	XGetWindowAttributes(dpy, win->drawable, &attr);
283	XUNLOCK(dpy);
284
285	if (attr.map_state == IsUnmapped)
286	{
287	return GL_FALSE;
288	}
289	# if 1
290	return GL_TRUE;
291	# else
292	if (attr.override_redirect)
293	{
294	return GL_TRUE;
295	}
296
297	if (!stub.bXExtensionsChecked)
298	{
299	stubCheckXExtensions(win);
300	}
301
302	if (!stub.bHaveXComposite)
303	{
304	return GL_TRUE;
305	}
306	else
307	{
308	Pixmap p;
309
310	crLockMutex(&stub.mutex);
311
312	XLOCK(dpy);
313	XSync(dpy, false);
314	oldErrorHandler = XSetErrorHandler(errorHandler);
315	/@todo this will create new pixmap for window every call/
316	p = XCompositeNameWindowPixmap(dpy, win->drawable);
317	XSync(dpy, false);
318	XSetErrorHandler(oldErrorHandler);
319	XUNLOCK(dpy);
320
321	switch (lastXError)
322	{
323	case Success:
324	XFreePixmap(dpy, p);
325	crUnlockMutex(&stub.mutex);
326	return GL_FALSE;
327	break;
328	case BadMatch:
329	/Window isn't redirected/
330	lastXError = Success;
331	break;
332	default:
333	crWarning("Unexpected XError %i", (int)lastXError);
334	lastXError = Success;
335	}
336
337	crUnlockMutex(&stub.mutex);
338
339	return GL_TRUE;
340	}
341	# endif
342	}
343	else {
344	/* probably created by crWindowCreate() */
345	return win->mapped;
346	}
347	#endif
348	}
349
350
351	/**
352	* Given a Windows HDC or GLX Drawable, return the corresponding
353	* WindowInfo structure. Create a new one if needed.
354	*/
355	WindowInfo *
356	#ifdef WINDOWS
357	stubGetWindowInfo( HDC drawable )
358	#elif defined(Darwin)
359	stubGetWindowInfo( CGSWindowID drawable )
360	#elif defined(GLX)
361	stubGetWindowInfo( Display *dpy, GLXDrawable drawable )
362	#endif
363	{
364	#ifndef WINDOWS
365	WindowInfo winInfo = (WindowInfo ) crHashtableSearch(stub.windowTable, (unsigned int) drawable);
366	#else
367	WindowInfo *winInfo;
368	HWND hwnd;
369	hwnd = WindowFromDC(drawable);
370
371	if (!hwnd)
372	{
373	return NULL;
374	}
375
376	winInfo = (WindowInfo *) crHashtableSearch(stub.windowTable, (unsigned int) hwnd);
377	#endif
378	if (!winInfo) {
379	winInfo = (WindowInfo *) crCalloc(sizeof(WindowInfo));
380	if (!winInfo)
381	return NULL;
382	#ifdef GLX
383	crStrncpy(winInfo->dpyName, DisplayString(dpy), MAX_DPY_NAME);
384	winInfo->dpyName[MAX_DPY_NAME-1] = 0;
385	winInfo->dpy = dpy;
386	winInfo->pVisibleRegions = NULL;
387	#elif defined(Darwin)
388	winInfo->connection = _CGSDefaultConnection(); // store our connection as default
389	#elif defined(WINDOWS)
390	winInfo->hVisibleRegion = INVALID_HANDLE_VALUE;
391	winInfo->hWnd = hwnd;
392	#endif
393	winInfo->drawable = drawable;
394	winInfo->type = UNDECIDED;
395	winInfo->spuWindow = -1;
396	#ifdef VBOX_WITH_WDDM
397	if (stub.bRunningUnderWDDM)
398	winInfo->mapped = 0;
399	else
400	#endif
401	{
402	winInfo->mapped = -1; /* don't know */
403	}
404	winInfo->pOwner = NULL;
405	#ifdef CR_NEWWINTRACK
406	winInfo->u32ClientID = -1;
407	#endif
408	#ifndef WINDOWS
409	crHashtableAdd(stub.windowTable, (unsigned int) drawable, winInfo);
410	#else
411	crHashtableAdd(stub.windowTable, (unsigned int) hwnd, winInfo);
412	#endif
413	}
414	#ifdef WINDOWS
415	else
416	{
417	winInfo->drawable = drawable;
418	}
419	#endif
420	return winInfo;
421	}
422
423	static void stubWindowCheckOwnerCB(unsigned long key, void data1, void data2);
424
425	static void
426	stubContextFree( ContextInfo *context )
427	{
428	crMemZero(context, sizeof(ContextInfo)); /* just to be safe */
429	crFree(context);
430	}
431
432	static void
433	stubDestroyContextLocked( ContextInfo *context )
434	{
435	unsigned long contextId = context->id;
436	if (context->type == NATIVE) {
437	#ifdef WINDOWS
438	stub.wsInterface.wglDeleteContext( context->hglrc );
439	#elif defined(Darwin)
440	stub.wsInterface.CGLDestroyContext( context->cglc );
441	#elif defined(GLX)
442	stub.wsInterface.glXDestroyContext( context->dpy, context->glxContext );
443	#endif
444	}
445	else if (context->type == CHROMIUM) {
446	/* Have pack SPU or tilesort SPU, etc. destroy the context */
447	CRASSERT(context->spuContext >= 0);
448	stub.spu->dispatch_table.DestroyContext( context->spuContext );
449	crHashtableWalk(stub.windowTable, stubWindowCheckOwnerCB, context);
450	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
451	if (context->spuConnection)
452	{
453	stub.spu->dispatch_table.VBoxConDestroy(context->spuConnection);
454	context->spuConnection = 0;
455	}
456	#endif
457	}
458
459	#ifdef GLX
460	crFreeHashtable(context->pGLXPixmapsHash, crFree);
461	#endif
462
463	crHashtableDelete(stub.contextTable, contextId, NULL);
464	}
465
466	#ifdef CHROMIUM_THREADSAFE
467	static DECLCALLBACK(void) stubContextDtor(void*pvContext)
468	{
469	stubContextFree((ContextInfo*)pvContext);
470	}
471	#endif
472
473	/**
474	* Allocate a new ContextInfo object, initialize it, put it into the
475	* context hash table. If type==CHROMIUM, call the head SPU's
476	* CreateContext() function too.
477	*/
478	ContextInfo *
479	stubNewContext(char *dpyName, GLint visBits, ContextType type, unsigned long shareCtx
480	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
481	, struct VBOXUHGSMI *pHgsmi
482	#endif
483	)
484	{
485	GLint spuContext = -1, spuShareCtx = 0, spuConnection = 0;
486	ContextInfo *context;
487
488	if (shareCtx > 0) {
489	/* translate shareCtx to a SPU context ID */
490	context = (ContextInfo *)
491	crHashtableSearch(stub.contextTable, shareCtx);
492	if (context)
493	spuShareCtx = context->spuContext;
494	}
495
496	if (type == CHROMIUM) {
497	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
498	if (pHgsmi)
499	{
500	spuConnection = stub.spu->dispatch_table.VBoxConCreate(pHgsmi);
501	if (!spuConnection)
502	{
503	crWarning("VBoxConCreate failed");
504	return NULL;
505	}
506	}
507	#endif
508	spuContext
509	= stub.spu->dispatch_table.VBoxCreateContext(spuConnection, dpyName, visBits, spuShareCtx);
510	if (spuContext < 0)
511	{
512	crWarning("VBoxCreateContext failed");
513	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
514	if (spuConnection)
515	stub.spu->dispatch_table.VBoxConDestroy(spuConnection);
516	#endif
517	return NULL;
518	}
519	}
520
521	context = crCalloc(sizeof(ContextInfo));
522	if (!context) {
523	stub.spu->dispatch_table.DestroyContext(spuContext);
524	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
525	if (spuConnection)
526	stub.spu->dispatch_table.VBoxConDestroy(spuConnection);
527	#endif
528	return NULL;
529	}
530
531	if (!dpyName)
532	dpyName = "";
533
534	context->id = stub.freeContextNumber++;
535	context->type = type;
536	context->spuContext = spuContext;
537	context->visBits = visBits;
538	context->currentDrawable = NULL;
539	crStrncpy(context->dpyName, dpyName, MAX_DPY_NAME);
540	context->dpyName[MAX_DPY_NAME-1] = 0;
541
542	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
543	context->spuConnection = spuConnection;
544	context->pHgsmi = pHgsmi;
545	#endif
546
547	#ifdef CHROMIUM_THREADSAFE
548	VBoxTlsRefInit(context, stubContextDtor);
549	#endif
550
551	#if defined(GLX) \|\| defined(DARWIN)
552	context->share = (ContextInfo *)
553	crHashtableSearch(stub.contextTable, (unsigned long) shareCtx);
554	#endif
555
556	#ifdef GLX
557	context->pGLXPixmapsHash = crAllocHashtable();
558	context->damageQueryFailed = GL_FALSE;
559	context->damageEventsBase = 0;
560	#endif
561
562	crHashtableAdd(stub.contextTable, context->id, (void *) context);
563
564	return context;
565	}
566
567
568	#ifdef Darwin
569
570	#define SET_ATTR(l,i,a) ( (l)[(i)++] = (a) )
571	#define SET_ATTR_V(l,i,a,v) ( SET_ATTR(l,i,a), SET_ATTR(l,i,v) )
572
573	void stubSetPFA( ContextInfo ctx, CGLPixelFormatAttribute attribs, int size, GLint *num ) {
574	GLuint visual = ctx->visBits;
575	int i = 0;
576
577	CRASSERT(visual & CR_RGB_BIT);
578
579	SET_ATTR_V(attribs, i, kCGLPFAColorSize, 8);
580
581	if( visual & CR_DEPTH_BIT )
582	SET_ATTR_V(attribs, i, kCGLPFADepthSize, 16);
583
584	if( visual & CR_ACCUM_BIT )
585	SET_ATTR_V(attribs, i, kCGLPFAAccumSize, 1);
586
587	if( visual & CR_STENCIL_BIT )
588	SET_ATTR_V(attribs, i, kCGLPFAStencilSize, 1);
589
590	if( visual & CR_ALPHA_BIT )
591	SET_ATTR_V(attribs, i, kCGLPFAAlphaSize, 1);
592
593	if( visual & CR_DOUBLE_BIT )
594	SET_ATTR(attribs, i, kCGLPFADoubleBuffer);
595
596	if( visual & CR_STEREO_BIT )
597	SET_ATTR(attribs, i, kCGLPFAStereo);
598
599	/* SET_ATTR_V(attribs, i, kCGLPFASampleBuffers, 1);
600	SET_ATTR_V(attribs, i, kCGLPFASamples, 0);
601	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, 0); */
602	SET_ATTR(attribs, i, kCGLPFABackingStore);
603	//SET_ATTR(attribs, i, kCGLPFAWindow); // kCGLPFAWindow deprecated starting from OSX 10.7
604	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, ctx->disp_mask);
605
606	SET_ATTR(attribs, i, 0);
607
608	*num = i;
609	}
610
611	#endif
612
613	/**
614	* This creates a native GLX/WGL context.
615	*/
616	static GLboolean
617	InstantiateNativeContext( WindowInfo window, ContextInfo context )
618	{
619	#ifdef WINDOWS
620	context->hglrc = stub.wsInterface.wglCreateContext( window->drawable );
621	return context->hglrc ? GL_TRUE : GL_FALSE;
622	#elif defined(Darwin)
623	CGLContextObj shareCtx = NULL;
624	CGLPixelFormatObj pix;
625	long npix;
626
627	CGLPixelFormatAttribute attribs[16];
628	GLint ind = 0;
629
630	if( context->share ) {
631	if( context->cglc != context->share->cglc ) {
632	crWarning("CGLCreateContext() is trying to share a non-existant "
633	"CGL context. Setting share context to zero.");
634	shareCtx = 0;
635	}
636	else
637	shareCtx = context->cglc;
638	}
639
640	stubSetPFA( context, attribs, 16, &ind );
641
642	stub.wsInterface.CGLChoosePixelFormat( attribs, &pix, &npix );
643	stub.wsInterface.CGLCreateContext( pix, shareCtx, &context->cglc );
644	if( !context->cglc )
645	crError("InstantiateNativeContext: Couldn't Create the context!");
646
647	stub.wsInterface.CGLDestroyPixelFormat( pix );
648
649	if( context->parambits ) {
650	/* Set the delayed parameters */
651	if( context->parambits & VISBIT_SWAP_RECT )
652	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapRectangle, context->swap_rect );
653
654	if( context->parambits & VISBIT_SWAP_INTERVAL )
655	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapInterval, &(context->swap_interval) );
656
657	if( context->parambits & VISBIT_CLIENT_STORAGE )
658	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPClientStorage, (long*)&(context->client_storage) );
659
660	context->parambits = 0;
661	}
662
663	return context->cglc ? GL_TRUE : GL_FALSE;
664	#elif defined(GLX)
665	GLXContext shareCtx = 0;
666
667	/* sort out context sharing here */
668	if (context->share) {
669	if (context->glxContext != context->share->glxContext) {
670	crWarning("glXCreateContext() is trying to share a non-existant "
671	"GLX context. Setting share context to zero.");
672	shareCtx = 0;
673	}
674	else {
675	shareCtx = context->glxContext;
676	}
677	}
678
679	context->glxContext = stub.wsInterface.glXCreateContext( window->dpy,
680	context->visual, shareCtx, context->direct );
681
682	return context->glxContext ? GL_TRUE : GL_FALSE;
683	#endif
684	}
685
686
687	/**
688	* Utility functions to get window size and titlebar text.
689	*/
690	#ifdef WINDOWS
691
692	void
693	stubGetWindowGeometry(WindowInfo window, int x, int *y,
694	unsigned int w, unsigned int h )
695	{
696	RECT rect;
697
698	if (!window->drawable \|\| !window->hWnd) {
699	w = h = 0;
700	return;
701	}
702
703	if (window->hWnd!=WindowFromDC(window->drawable))
704	{
705	crWarning("Window(%i) DC is no longer valid", window->spuWindow);
706	return;
707	}
708
709	if (!GetClientRect(window->hWnd, &rect))
710	{
711	crWarning("GetClientRect failed for %p", window->hWnd);
712	w = h = 0;
713	return;
714	}
715	*w = rect.right - rect.left;
716	*h = rect.bottom - rect.top;
717
718	if (!ClientToScreen( window->hWnd, (LPPOINT) &rect ))
719	{
720	crWarning("ClientToScreen failed for %p", window->hWnd);
721	w = h = 0;
722	return;
723	}
724	*x = rect.left;
725	*y = rect.top;
726	}
727
728	static void
729	GetWindowTitle( const WindowInfo window, char title )
730	{
731	/* XXX - we don't handle recurseUp */
732	if (window->hWnd)
733	GetWindowText(window->hWnd, title, 100);
734	else
735	title[0] = 0;
736	}
737
738	static void
739	GetCursorPosition(WindowInfo *window, int pos[2])
740	{
741	RECT rect;
742	POINT point;
743	GLint size[2], x, y;
744	unsigned int NativeHeight, NativeWidth, ChromiumHeight, ChromiumWidth;
745	float WidthRatio, HeightRatio;
746	static int DebugFlag = 0;
747
748	// apparently the "window" parameter passed to this
749	// function contains the native window information
750	HWND NATIVEhwnd = window->hWnd;
751
752	if (NATIVEhwnd!=WindowFromDC(window->drawable))
753	{
754	crWarning("Window(%i) DC is no longer valid", window->spuWindow);
755	return;
756	}
757
758	// get the native window's height and width
759	stubGetWindowGeometry(window, &x, &y, &NativeWidth, &NativeHeight);
760
761	// get the spu window's height and width
762	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, window->spuWindow, GL_INT, 2, size);
763	ChromiumWidth = size[0];
764	ChromiumHeight = size[1];
765
766	// get the ratio of the size of the native window to the cr window
767	WidthRatio = (float)ChromiumWidth / (float)NativeWidth;
768	HeightRatio = (float)ChromiumHeight / (float)NativeHeight;
769
770	// output some debug information at the beginning
771	if(DebugFlag)
772	{
773	DebugFlag = 0;
774	crDebug("Native Window Handle = %d", NATIVEhwnd);
775	crDebug("Native Width = %i", NativeWidth);
776	crDebug("Native Height = %i", NativeHeight);
777	crDebug("Chromium Width = %i", ChromiumWidth);
778	crDebug("Chromium Height = %i", ChromiumHeight);
779	}
780
781	if (NATIVEhwnd)
782	{
783	GetClientRect( NATIVEhwnd, &rect );
784	GetCursorPos (&point);
785
786	// make sure these coordinates are relative to the native window,
787	// not the whole desktop
788	ScreenToClient(NATIVEhwnd, &point);
789
790	// calculate the new position of the virtual cursor
791	pos[0] = (int)(point.x * WidthRatio);
792	pos[1] = (int)((NativeHeight - point.y) * HeightRatio);
793	}
794	else
795	{
796	pos[0] = 0;
797	pos[1] = 0;
798	}
799	}
800
801	#elif defined(Darwin)
802
803	extern OSStatus CGSGetScreenRectForWindow( CGSConnectionID cid, CGSWindowID wid, float *outRect );
804	extern OSStatus CGSGetWindowBounds( CGSConnectionID cid, CGSWindowID wid, float *bounds );
805
806	void
807	stubGetWindowGeometry( const WindowInfo window, int x, int y, unsigned int w, unsigned int *h )
808	{
809	float rect[4];
810
811	if( !window \|\|
812	!window->connection \|\|
813	!window->drawable \|\|
814	CGSGetWindowBounds( window->connection, window->drawable, rect ) != noErr )
815	{
816	x = y = 0;
817	w = h = 0;
818	} else {
819	*x = (int) rect[0];
820	*y = (int) rect[1];
821	*w = (int) rect[2];
822	*h = (int) rect[3];
823	}
824	}
825
826
827	static void
828	GetWindowTitle( const WindowInfo window, char title )
829	{
830	/* XXX \todo Darwin window Title */
831	title[0] = '\0';
832	}
833
834
835	static void
836	GetCursorPosition( const WindowInfo *window, int pos[2] )
837	{
838	Point mouse_pos;
839	float window_rect[4];
840
841	GetMouse( &mouse_pos );
842	CGSGetScreenRectForWindow( window->connection, window->drawable, window_rect );
843
844	pos[0] = mouse_pos.h - (int) window_rect[0];
845	pos[1] = (int) window_rect[3] - (mouse_pos.v - (int) window_rect[1]);
846
847	/crDebug( "%i %i", pos[0], pos[1] );/
848	}
849
850	#elif defined(GLX)
851
852	void
853	stubGetWindowGeometry(WindowInfo window, int x, int y, unsigned int w, unsigned int *h)
854	{
855	Window root, child;
856	unsigned int border, depth;
857	Display *dpy;
858
859	dpy = stubGetWindowDisplay(window);
860
861	//@todo: Performing those checks is expensive operation, especially for simple apps with high FPS.
862	// Disabling those triples glxgears fps, thus using xevents instead of per frame polling is much more preferred.
863	//@todo: Check similar on windows guests, though doubtful as there're no XSync like calls on windows.
864	if (window && dpy)
865	{
866	XLOCK(dpy);
867	}
868
869	if (!window
870	\|\| !dpy
871	\|\| !window->drawable
872	\|\| !XGetGeometry(dpy, window->drawable, &root, x, y, w, h, &border, &depth)
873	\|\| !XTranslateCoordinates(dpy, window->drawable, root, 0, 0, x, y, &child))
874	{
875	crWarning("Failed to get windows geometry for %p, try xwininfo", window);
876	x = y = 0;
877	w = h = 0;
878	}
879
880	if (window && dpy)
881	{
882	XUNLOCK(dpy);
883	}
884	}
885
886	static char *
887	GetWindowTitleHelper( Display *dpy, Window window, GLboolean recurseUp )
888	{
889	while (1) {
890	char *name;
891	if (!XFetchName(dpy, window, &name))
892	return NULL;
893	if (name[0]) {
894	return name;
895	}
896	else if (recurseUp) {
897	/* This window has no name, try the parent */
898	Status stat;
899	Window root, parent, *children;
900	unsigned int numChildren;
901	stat = XQueryTree( dpy, window, &root, &parent,
902	&children, &numChildren );
903	if (!stat \|\| window == root)
904	return NULL;
905	if (children)
906	XFree(children);
907	window = parent;
908	}
909	else {
910	XFree(name);
911	return NULL;
912	}
913	}
914	}
915
916	static void
917	GetWindowTitle( const WindowInfo window, char title )
918	{
919	char *t = GetWindowTitleHelper(window->dpy, window->drawable, GL_TRUE);
920	if (t) {
921	crStrcpy(title, t);
922	XFree(t);
923	}
924	else {
925	title[0] = 0;
926	}
927	}
928
929
930	/**
931	*Return current cursor position in local window coords.
932	*/
933	static void
934	GetCursorPosition(WindowInfo *window, int pos[2] )
935	{
936	int rootX, rootY;
937	Window root, child;
938	unsigned int mask;
939	int x, y;
940
941	XLOCK(window->dpy);
942
943	Bool q = XQueryPointer(window->dpy, window->drawable, &root, &child,
944	&rootX, &rootY, &pos[0], &pos[1], &mask);
945	if (q) {
946	unsigned int w, h;
947	stubGetWindowGeometry( window, &x, &y, &w, &h );
948	/* invert Y */
949	pos[1] = (int) h - pos[1] - 1;
950	}
951	else {
952	pos[0] = pos[1] = 0;
953	}
954
955	XUNLOCK(window->dpy);
956	}
957
958	#endif
959
960
961	/**
962	* This function is called by MakeCurrent() and determines whether or
963	* not a new rendering context should be bound to Chromium or the native
964	* OpenGL.
965	* \return GL_FALSE if native OpenGL should be used, or GL_TRUE if Chromium
966	* should be used.
967	*/
968	static GLboolean
969	stubCheckUseChromium( WindowInfo *window )
970	{
971	int x, y;
972	unsigned int w, h;
973
974	/* If the provided window is CHROMIUM, we're clearly intended
975	* to create a CHROMIUM context.
976	*/
977	if (window->type == CHROMIUM)
978	return GL_TRUE;
979
980	if (stub.ignoreFreeglutMenus) {
981	const char *glutMenuTitle = "freeglut menu";
982	char title[1000];
983	GetWindowTitle(window, title);
984	if (crStrcmp(title, glutMenuTitle) == 0) {
985	crDebug("GL faker: Ignoring freeglut menu window");
986	return GL_FALSE;
987	}
988	}
989
990	/* If the user's specified a window count for Chromium, see if
991	* this window satisfies that criterium.
992	*/
993	stub.matchChromiumWindowCounter++;
994	if (stub.matchChromiumWindowCount > 0) {
995	if (stub.matchChromiumWindowCounter != stub.matchChromiumWindowCount) {
996	crDebug("Using native GL, app window doesn't meet match_window_count");
997	return GL_FALSE;
998	}
999	}
1000
1001	/* If the user's specified a window list to ignore, see if this
1002	* window satisfies that criterium.
1003	*/
1004	if (stub.matchChromiumWindowID) {
1005	GLuint i;
1006
1007	for (i = 0; i <= stub.numIgnoreWindowID; i++) {
1008	if (stub.matchChromiumWindowID[i] == stub.matchChromiumWindowCounter) {
1009	crDebug("Ignore window ID %d, using native GL", stub.matchChromiumWindowID[i]);
1010	return GL_FALSE;
1011	}
1012	}
1013	}
1014
1015	/* If the user's specified a minimum window size for Chromium, see if
1016	* this window satisfies that criterium.
1017	*/
1018	if (stub.minChromiumWindowWidth > 0 &&
1019	stub.minChromiumWindowHeight > 0) {
1020	stubGetWindowGeometry( window, &x, &y, &w, &h );
1021	if (w >= stub.minChromiumWindowWidth &&
1022	h >= stub.minChromiumWindowHeight) {
1023
1024	/* Check for maximum sized window now too */
1025	if (stub.maxChromiumWindowWidth &&
1026	stub.maxChromiumWindowHeight) {
1027	if (w < stub.maxChromiumWindowWidth &&
1028	h < stub.maxChromiumWindowHeight)
1029	return GL_TRUE;
1030	else
1031	return GL_FALSE;
1032	}
1033
1034	return GL_TRUE;
1035	}
1036	crDebug("Using native GL, app window doesn't meet minimum_window_size");
1037	return GL_FALSE;
1038	}
1039	else if (stub.matchWindowTitle) {
1040	/* If the user's specified a window title for Chromium, see if this
1041	* window satisfies that criterium.
1042	*/
1043	GLboolean wildcard = GL_FALSE;
1044	char title[1000];
1045	char *titlePattern;
1046	int len;
1047	/* check for leading '' wildcard /
1048	if (stub.matchWindowTitle[0] == '*') {
1049	titlePattern = crStrdup( stub.matchWindowTitle + 1 );
1050	wildcard = GL_TRUE;
1051	}
1052	else {
1053	titlePattern = crStrdup( stub.matchWindowTitle );
1054	}
1055	/* check for trailing '' wildcard /
1056	len = crStrlen(titlePattern);
1057	if (len > 0 && titlePattern[len - 1] == '*') {
1058	titlePattern[len - 1] = '\0'; /* terminate here */
1059	wildcard = GL_TRUE;
1060	}
1061
1062	GetWindowTitle( window, title );
1063	if (title[0]) {
1064	if (wildcard) {
1065	if (crStrstr(title, titlePattern)) {
1066	crFree(titlePattern);
1067	return GL_TRUE;
1068	}
1069	}
1070	else if (crStrcmp(title, titlePattern) == 0) {
1071	crFree(titlePattern);
1072	return GL_TRUE;
1073	}
1074	}
1075	crFree(titlePattern);
1076	crDebug("Using native GL, app window title doesn't match match_window_title string (\"%s\" != \"%s\")", title, stub.matchWindowTitle);
1077	return GL_FALSE;
1078	}
1079
1080	/* Window title and size don't matter */
1081	CRASSERT(stub.minChromiumWindowWidth == 0);
1082	CRASSERT(stub.minChromiumWindowHeight == 0);
1083	CRASSERT(stub.matchWindowTitle == NULL);
1084
1085	/* User hasn't specified a width/height or window title.
1086	* We'll use chromium for this window (and context) if no other is.
1087	*/
1088
1089	return GL_TRUE; /* use Chromium! */
1090	}
1091
1092	static void stubWindowCheckOwnerCB(unsigned long key, void data1, void data2)
1093	{
1094	WindowInfo pWindow = (WindowInfo ) data1;
1095	ContextInfo pCtx = (ContextInfo ) data2;
1096
1097	if (pWindow->pOwner == pCtx)
1098	{
1099	#ifdef WINDOWS
1100	/* Note: can't use WindowFromDC(context->pOwnWindow->drawable) here
1101	because GL context is already released from DC and actual guest window
1102	could be destroyed.
1103	*/
1104	stubDestroyWindow(CR_CTX_CON(pCtx), (GLint)pWindow->hWnd);
1105	#else
1106	stubDestroyWindow(CR_CTX_CON(pCtx), (GLint)pWindow->drawable);
1107	#endif
1108	}
1109	}
1110
1111	GLboolean stubCtxCreate(ContextInfo *context)
1112	{
1113	/*
1114	* Create a Chromium context.
1115	*/
1116	#if defined(GLX) \|\| defined(DARWIN)
1117	GLint spuShareCtx = context->share ? context->share->spuContext : 0;
1118	#else
1119	GLint spuShareCtx = 0;
1120	#endif
1121	GLint spuConnection = 0;
1122	CRASSERT(stub.spu);
1123	CRASSERT(stub.spu->dispatch_table.CreateContext);
1124	context->type = CHROMIUM;
1125
1126	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
1127	if (context->pHgsmi)
1128	{
1129	spuConnection = stub.spu->dispatch_table.VBoxConCreate(context->pHgsmi);
1130	if (!spuConnection)
1131	{
1132	crError("VBoxConCreate failed");
1133	return GL_FALSE;
1134	}
1135	context->spuConnection = spuConnection;
1136	}
1137	#endif
1138
1139	context->spuContext
1140	= stub.spu->dispatch_table.VBoxCreateContext(spuConnection, context->dpyName,
1141	context->visBits,
1142	spuShareCtx);
1143
1144	return GL_TRUE;
1145	}
1146
1147	GLboolean stubCtxCheckCreate(ContextInfo *context)
1148	{
1149	if (context->type == UNDECIDED)
1150	return stubCtxCreate(context);
1151	return CHROMIUM == context->type;
1152	}
1153
1154
1155	GLboolean
1156	stubMakeCurrent( WindowInfo window, ContextInfo context )
1157	{
1158	GLboolean retVal;
1159
1160	/*
1161	* Get WindowInfo and ContextInfo pointers.
1162	*/
1163
1164	if (!context \|\| !window) {
1165	ContextInfo * currentContext = stubGetCurrentContext();
1166	if (currentContext)
1167	currentContext->currentDrawable = NULL;
1168	if (context)
1169	context->currentDrawable = NULL;
1170	stubSetCurrentContext(NULL);
1171	return GL_TRUE; /* OK */
1172	}
1173
1174	#ifdef CHROMIUM_THREADSAFE
1175	stubCheckMultithread();
1176	#endif
1177
1178	if (context->type == UNDECIDED) {
1179	/* Here's where we really create contexts */
1180	#ifdef CHROMIUM_THREADSAFE
1181	crLockMutex(&stub.mutex);
1182	#endif
1183
1184	if (stubCheckUseChromium(window)) {
1185	GLint spuConnection = 0;
1186
1187	if (!stubCtxCreate(context))
1188	{
1189	crWarning("stubCtxCreate failed");
1190	return GL_FALSE;
1191	}
1192
1193	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
1194	spuConnection = context->spuConnection;
1195	#endif
1196
1197	if (window->spuWindow == -1)
1198	{
1199	/crDebug("(1)stubMakeCurrent ctx=%p(%i) window=%p(%i)", context, context->spuContext, window, window->spuWindow);/
1200	window->spuWindow = stub.spu->dispatch_table.VBoxWindowCreate(spuConnection, window->dpyName, context->visBits );
1201	#ifdef CR_NEWWINTRACK
1202	window->u32ClientID = stub.spu->dispatch_table.VBoxPackGetInjectID(spuConnection);
1203	#endif
1204	}
1205	}
1206	else {
1207	/*
1208	* Create a native OpenGL context.
1209	*/
1210	if (!InstantiateNativeContext(window, context))
1211	{
1212	#ifdef CHROMIUM_THREADSAFE
1213	crUnlockMutex(&stub.mutex);
1214	#endif
1215	return 0; /* false */
1216	}
1217	context->type = NATIVE;
1218	}
1219
1220	#ifdef CHROMIUM_THREADSAFE
1221	crUnlockMutex(&stub.mutex);
1222	#endif
1223	}
1224
1225
1226	if (context->type == NATIVE) {
1227	/*
1228	* Native OpenGL MakeCurrent().
1229	*/
1230	#ifdef WINDOWS
1231	retVal = (GLboolean) stub.wsInterface.wglMakeCurrent( window->drawable, context->hglrc );
1232	#elif defined(Darwin)
1233	// XXX \todo We need to differentiate between these two..
1234	retVal = ( stub.wsInterface.CGLSetSurface(context->cglc, window->connection, window->drawable, window->surface) == noErr );
1235	retVal = ( stub.wsInterface.CGLSetCurrentContext(context->cglc) == noErr );
1236	#elif defined(GLX)
1237	retVal = (GLboolean) stub.wsInterface.glXMakeCurrent( window->dpy, window->drawable, context->glxContext );
1238	#endif
1239	}
1240	else {
1241	/*
1242	* SPU chain MakeCurrent().
1243	*/
1244	CRASSERT(context->type == CHROMIUM);
1245	CRASSERT(context->spuContext >= 0);
1246
1247	/*if (context->currentDrawable && context->currentDrawable != window)
1248	crDebug("Rebinding context %p to a different window", context);*/
1249
1250	if (window->type == NATIVE) {
1251	crWarning("Can't rebind a chromium context to a native window\n");
1252	retVal = 0;
1253	}
1254	else {
1255	if (window->spuWindow == -1)
1256	{
1257	/crDebug("(2)stubMakeCurrent ctx=%p(%i) window=%p(%i)", context, context->spuContext, window, window->spuWindow);/
1258	window->spuWindow = stub.spu->dispatch_table.VBoxWindowCreate(
1259	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
1260	context->spuConnection,
1261	#else
1262	0,
1263	#endif
1264	window->dpyName, context->visBits );
1265	#ifdef CR_NEWWINTRACK
1266	window->u32ClientID = stub.spu->dispatch_table.VBoxPackGetInjectID(
1267	# if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
1268	context->spuConnection
1269	# else
1270	0
1271	# endif
1272	);
1273	#endif
1274	if (context->currentDrawable && context->currentDrawable->type==CHROMIUM
1275	&& context->currentDrawable->pOwner==context)
1276	{
1277	#ifdef WINDOWS
1278	if (context->currentDrawable->hWnd!=WindowFromDC(context->currentDrawable->drawable))
1279	{
1280	stubDestroyWindow(CR_CTX_CON(context), (GLint)context->currentDrawable->hWnd);
1281	}
1282	#else
1283	Window root;
1284	int x, y;
1285	unsigned int border, depth, w, h;
1286
1287	XLOCK(context->currentDrawable->dpy);
1288	if (!XGetGeometry(context->currentDrawable->dpy, context->currentDrawable->drawable, &root, &x, &y, &w, &h, &border, &depth))
1289	{
1290	stubDestroyWindow(CR_CTX_CON(context), (GLint)context->currentDrawable->drawable);
1291	}
1292	XUNLOCK(context->currentDrawable->dpy);
1293	#endif
1294
1295	}
1296	}
1297
1298	if (window->spuWindow != (GLint)window->drawable)
1299	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, (GLint) window->drawable, context->spuContext );
1300	else
1301	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, 0, /* native window handle */ context->spuContext );
1302
1303	retVal = 1;
1304	}
1305	}
1306
1307	window->type = context->type;
1308	window->pOwner = context;
1309	context->currentDrawable = window;
1310	stubSetCurrentContext(context);
1311
1312	if (retVal) {
1313	/* Now, if we've transitions from Chromium to native rendering, or
1314	* vice versa, we have to change all the OpenGL entrypoint pointers.
1315	*/
1316	if (context->type == NATIVE) {
1317	/* Switch to native API */
1318	/printf(" Switching to native API\n");/
1319	stubSetDispatch(&stub.nativeDispatch);
1320	}
1321	else if (context->type == CHROMIUM) {
1322	/* Switch to stub (SPU) API */
1323	/printf(" Switching to spu API\n");/
1324	stubSetDispatch(&stub.spuDispatch);
1325	}
1326	else {
1327	/* no API switch needed */
1328	}
1329	}
1330
1331	if (!window->width && window->type == CHROMIUM) {
1332	/* One time window setup */
1333	int x, y;
1334	unsigned int winW, winH;
1335
1336	stubGetWindowGeometry( window, &x, &y, &winW, &winH );
1337
1338	/* If we're not using GLX/WGL (no app window) we'll always get
1339	* a width and height of zero here. In that case, skip the viewport
1340	* call since we're probably using a tilesort SPU with fake_window_dims
1341	* which the tilesort SPU will use for the viewport.
1342	*/
1343	window->width = winW;
1344	window->height = winH;
1345	#if defined(WINDOWS) && defined(VBOX_WITH_WDDM)
1346	if (stubIsWindowVisible(window))
1347	#endif
1348	{
1349	if (stub.trackWindowSize)
1350	stub.spuDispatch.WindowSize( window->spuWindow, winW, winH );
1351	if (stub.trackWindowPos)
1352	stub.spuDispatch.WindowPosition(window->spuWindow, x, y);
1353	if (winW > 0 && winH > 0)
1354	stub.spu->dispatch_table.Viewport( 0, 0, winW, winH );
1355	}
1356	#ifdef VBOX_WITH_WDDM
1357	if (stub.trackWindowVisibleRgn)
1358	stub.spu->dispatch_table.WindowVisibleRegion(window->spuWindow, 0, NULL);
1359	#endif
1360	}
1361
1362	/* Update window mapping state.
1363	* Basically, this lets us hide render SPU windows which correspond
1364	* to unmapped application windows. Without this, "pertly" (for example)
1365	* opens lots of temporary windows which otherwise clutter the screen.
1366	*/
1367	if (stub.trackWindowVisibility && window->type == CHROMIUM && window->drawable) {
1368	const int mapped = stubIsWindowVisible(window);
1369	if (mapped != window->mapped) {
1370	crDebug("Dispatched: WindowShow(%i, %i)", window->spuWindow, mapped);
1371	stub.spu->dispatch_table.WindowShow(window->spuWindow, mapped);
1372	window->mapped = mapped;
1373	}
1374	}
1375
1376	return retVal;
1377	}
1378
1379	void
1380	stubDestroyContext( unsigned long contextId )
1381	{
1382	ContextInfo *context;
1383
1384	if (!stub.contextTable) {
1385	return;
1386	}
1387
1388	/* the lock order is windowTable->contextTable (see wglMakeCurrent_prox, glXMakeCurrent)
1389	* this is why we need to take a windowTable lock since we will later do stub.windowTable access & locking */
1390	crHashtableLock(stub.windowTable);
1391	crHashtableLock(stub.contextTable);
1392
1393	context = (ContextInfo *) crHashtableSearch(stub.contextTable, contextId);
1394	if (context)
1395	stubDestroyContextLocked(context);
1396	else
1397	crError("No context.");
1398
1399	#ifdef CHROMIUM_THREADSAFE
1400	if (stubGetCurrentContext() == context) {
1401	stubSetCurrentContext(NULL);
1402	}
1403
1404	VBoxTlsRefMarkDestroy(context);
1405	VBoxTlsRefRelease(context);
1406	#else
1407	if (stubGetCurrentContext() == context) {
1408	stubSetCurrentContext(NULL);
1409	}
1410	stubContextFree(context);
1411	#endif
1412	crHashtableUnlock(stub.contextTable);
1413	crHashtableUnlock(stub.windowTable);
1414	}
1415
1416	void
1417	stubSwapBuffers(WindowInfo *window, GLint flags)
1418	{
1419	if (!window)
1420	return;
1421
1422	/* Determine if this window is being rendered natively or through
1423	* Chromium.
1424	*/
1425
1426	if (window->type == NATIVE) {
1427	/printf("** Swapping native window %d\n", (int) drawable);*/
1428	#ifdef WINDOWS
1429	(void) stub.wsInterface.wglSwapBuffers( window->drawable );
1430	#elif defined(Darwin)
1431	/* ...is this ok? */
1432	/* stub.wsInterface.CGLFlushDrawable( context->cglc ); */
1433	crDebug("stubSwapBuffers: unable to swap (no context!)");
1434	#elif defined(GLX)
1435	stub.wsInterface.glXSwapBuffers( window->dpy, window->drawable );
1436	#endif
1437	}
1438	else if (window->type == CHROMIUM) {
1439	/* Let the SPU do the buffer swap */
1440	/printf("** Swapping chromium window %d\n", (int) drawable);*/
1441	if (stub.appDrawCursor) {
1442	int pos[2];
1443	GetCursorPosition(window, pos);
1444	stub.spu->dispatch_table.ChromiumParametervCR(GL_CURSOR_POSITION_CR, GL_INT, 2, pos);
1445	}
1446	stub.spu->dispatch_table.SwapBuffers( window->spuWindow, flags );
1447	}
1448	else {
1449	crDebug("Calling SwapBuffers on a window we haven't seen before (no-op).");
1450	}
1451	}

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source: vbox/trunk/src/VBox/Additions/common/crOpenGL/context.c@ 55618

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