context.c@ 53517

Last change on this file since 53517 was 51559, checked in by vboxsync, 11 years ago
crOpenGL: wglShareLists support
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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( const char *dpyName, GLint visBits, ContextType type,
480	unsigned long shareCtx
481	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
482	, struct VBOXUHGSMI *pHgsmi
483	#endif
484	)
485	{
486	GLint spuContext = -1, spuShareCtx = 0, spuConnection = 0;
487	ContextInfo *context;
488
489	if (shareCtx > 0) {
490	/* translate shareCtx to a SPU context ID */
491	context = (ContextInfo *)
492	crHashtableSearch(stub.contextTable, shareCtx);
493	if (context)
494	spuShareCtx = context->spuContext;
495	}
496
497	if (type == CHROMIUM) {
498	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
499	if (pHgsmi)
500	{
501	spuConnection = stub.spu->dispatch_table.VBoxConCreate(pHgsmi);
502	if (!spuConnection)
503	{
504	crWarning("VBoxConCreate failed");
505	return NULL;
506	}
507	}
508	#endif
509	spuContext
510	= stub.spu->dispatch_table.VBoxCreateContext(spuConnection, dpyName, visBits, spuShareCtx);
511	if (spuContext < 0)
512	{
513	crWarning("VBoxCreateContext failed");
514	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
515	if (spuConnection)
516	stub.spu->dispatch_table.VBoxConDestroy(spuConnection);
517	#endif
518	return NULL;
519	}
520	}
521
522	context = crCalloc(sizeof(ContextInfo));
523	if (!context) {
524	stub.spu->dispatch_table.DestroyContext(spuContext);
525	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
526	if (spuConnection)
527	stub.spu->dispatch_table.VBoxConDestroy(spuConnection);
528	#endif
529	return NULL;
530	}
531
532	if (!dpyName)
533	dpyName = "";
534
535	context->id = stub.freeContextNumber++;
536	context->type = type;
537	context->spuContext = spuContext;
538	context->visBits = visBits;
539	context->currentDrawable = NULL;
540	crStrncpy(context->dpyName, dpyName, MAX_DPY_NAME);
541	context->dpyName[MAX_DPY_NAME-1] = 0;
542
543	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
544	context->spuConnection = spuConnection;
545	context->pHgsmi = pHgsmi;
546	#endif
547
548	#ifdef CHROMIUM_THREADSAFE
549	VBoxTlsRefInit(context, stubContextDtor);
550	#endif
551
552	#if defined(GLX) \|\| defined(DARWIN)
553	context->share = (ContextInfo *)
554	crHashtableSearch(stub.contextTable, (unsigned long) shareCtx);
555	#endif
556
557	#ifdef GLX
558	context->pGLXPixmapsHash = crAllocHashtable();
559	context->damageQueryFailed = GL_FALSE;
560	context->damageEventsBase = 0;
561	#endif
562
563	crHashtableAdd(stub.contextTable, context->id, (void *) context);
564
565	return context;
566	}
567
568
569	#ifdef Darwin
570
571	#define SET_ATTR(l,i,a) ( (l)[(i)++] = (a) )
572	#define SET_ATTR_V(l,i,a,v) ( SET_ATTR(l,i,a), SET_ATTR(l,i,v) )
573
574	void stubSetPFA( ContextInfo ctx, CGLPixelFormatAttribute attribs, int size, GLint *num ) {
575	GLuint visual = ctx->visBits;
576	int i = 0;
577
578	CRASSERT(visual & CR_RGB_BIT);
579
580	SET_ATTR_V(attribs, i, kCGLPFAColorSize, 8);
581
582	if( visual & CR_DEPTH_BIT )
583	SET_ATTR_V(attribs, i, kCGLPFADepthSize, 16);
584
585	if( visual & CR_ACCUM_BIT )
586	SET_ATTR_V(attribs, i, kCGLPFAAccumSize, 1);
587
588	if( visual & CR_STENCIL_BIT )
589	SET_ATTR_V(attribs, i, kCGLPFAStencilSize, 1);
590
591	if( visual & CR_ALPHA_BIT )
592	SET_ATTR_V(attribs, i, kCGLPFAAlphaSize, 1);
593
594	if( visual & CR_DOUBLE_BIT )
595	SET_ATTR(attribs, i, kCGLPFADoubleBuffer);
596
597	if( visual & CR_STEREO_BIT )
598	SET_ATTR(attribs, i, kCGLPFAStereo);
599
600	/* SET_ATTR_V(attribs, i, kCGLPFASampleBuffers, 1);
601	SET_ATTR_V(attribs, i, kCGLPFASamples, 0);
602	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, 0); */
603	SET_ATTR(attribs, i, kCGLPFABackingStore);
604	SET_ATTR(attribs, i, kCGLPFAWindow);
605	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, ctx->disp_mask);
606
607	SET_ATTR(attribs, i, 0);
608
609	*num = i;
610	}
611
612	#endif
613
614	/**
615	* This creates a native GLX/WGL context.
616	*/
617	static GLboolean
618	InstantiateNativeContext( WindowInfo window, ContextInfo context )
619	{
620	#ifdef WINDOWS
621	context->hglrc = stub.wsInterface.wglCreateContext( window->drawable );
622	return context->hglrc ? GL_TRUE : GL_FALSE;
623	#elif defined(Darwin)
624	CGLContextObj shareCtx = NULL;
625	CGLPixelFormatObj pix;
626	long npix;
627
628	CGLPixelFormatAttribute attribs[16];
629	GLint ind = 0;
630
631	if( context->share ) {
632	if( context->cglc != context->share->cglc ) {
633	crWarning("CGLCreateContext() is trying to share a non-existant "
634	"CGL context. Setting share context to zero.");
635	shareCtx = 0;
636	}
637	else
638	shareCtx = context->cglc;
639	}
640
641	stubSetPFA( context, attribs, 16, &ind );
642
643	stub.wsInterface.CGLChoosePixelFormat( attribs, &pix, &npix );
644	stub.wsInterface.CGLCreateContext( pix, shareCtx, &context->cglc );
645	if( !context->cglc )
646	crError("InstantiateNativeContext: Couldn't Create the context!");
647
648	stub.wsInterface.CGLDestroyPixelFormat( pix );
649
650	if( context->parambits ) {
651	/* Set the delayed parameters */
652	if( context->parambits & VISBIT_SWAP_RECT )
653	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapRectangle, context->swap_rect );
654
655	if( context->parambits & VISBIT_SWAP_INTERVAL )
656	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapInterval, &(context->swap_interval) );
657
658	if( context->parambits & VISBIT_CLIENT_STORAGE )
659	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPClientStorage, (long*)&(context->client_storage) );
660
661	context->parambits = 0;
662	}
663
664	return context->cglc ? GL_TRUE : GL_FALSE;
665	#elif defined(GLX)
666	GLXContext shareCtx = 0;
667
668	/* sort out context sharing here */
669	if (context->share) {
670	if (context->glxContext != context->share->glxContext) {
671	crWarning("glXCreateContext() is trying to share a non-existant "
672	"GLX context. Setting share context to zero.");
673	shareCtx = 0;
674	}
675	else {
676	shareCtx = context->glxContext;
677	}
678	}
679
680	context->glxContext = stub.wsInterface.glXCreateContext( window->dpy,
681	context->visual, shareCtx, context->direct );
682
683	return context->glxContext ? GL_TRUE : GL_FALSE;
684	#endif
685	}
686
687
688	/**
689	* Utility functions to get window size and titlebar text.
690	*/
691	#ifdef WINDOWS
692
693	void
694	stubGetWindowGeometry(const WindowInfo window, int x, int *y,
695	unsigned int w, unsigned int h )
696	{
697	RECT rect;
698
699	if (!window->drawable \|\| !window->hWnd) {
700	w = h = 0;
701	return;
702	}
703
704	if (window->hWnd!=WindowFromDC(window->drawable))
705	{
706	crWarning("Window(%i) DC is no longer valid", window->spuWindow);
707	return;
708	}
709
710	if (!GetClientRect(window->hWnd, &rect))
711	{
712	crWarning("GetClientRect failed for %p", window->hWnd);
713	w = h = 0;
714	return;
715	}
716	*w = rect.right - rect.left;
717	*h = rect.bottom - rect.top;
718
719	if (!ClientToScreen( window->hWnd, (LPPOINT) &rect ))
720	{
721	crWarning("ClientToScreen failed for %p", window->hWnd);
722	w = h = 0;
723	return;
724	}
725	*x = rect.left;
726	*y = rect.top;
727	}
728
729	static void
730	GetWindowTitle( const WindowInfo window, char title )
731	{
732	/* XXX - we don't handle recurseUp */
733	if (window->hWnd)
734	GetWindowText(window->hWnd, title, 100);
735	else
736	title[0] = 0;
737	}
738
739	static void
740	GetCursorPosition(WindowInfo *window, int pos[2])
741	{
742	RECT rect;
743	POINT point;
744	GLint size[2], x, y;
745	unsigned int NativeHeight, NativeWidth, ChromiumHeight, ChromiumWidth;
746	float WidthRatio, HeightRatio;
747	static int DebugFlag = 0;
748
749	// apparently the "window" parameter passed to this
750	// function contains the native window information
751	HWND NATIVEhwnd = window->hWnd;
752
753	if (NATIVEhwnd!=WindowFromDC(window->drawable))
754	{
755	crWarning("Window(%i) DC is no longer valid", window->spuWindow);
756	return;
757	}
758
759	// get the native window's height and width
760	stubGetWindowGeometry(window, &x, &y, &NativeWidth, &NativeHeight);
761
762	// get the spu window's height and width
763	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, window->spuWindow, GL_INT, 2, size);
764	ChromiumWidth = size[0];
765	ChromiumHeight = size[1];
766
767	// get the ratio of the size of the native window to the cr window
768	WidthRatio = (float)ChromiumWidth / (float)NativeWidth;
769	HeightRatio = (float)ChromiumHeight / (float)NativeHeight;
770
771	// output some debug information at the beginning
772	if(DebugFlag)
773	{
774	DebugFlag = 0;
775	crDebug("Native Window Handle = %d", NATIVEhwnd);
776	crDebug("Native Width = %i", NativeWidth);
777	crDebug("Native Height = %i", NativeHeight);
778	crDebug("Chromium Width = %i", ChromiumWidth);
779	crDebug("Chromium Height = %i", ChromiumHeight);
780	}
781
782	if (NATIVEhwnd)
783	{
784	GetClientRect( NATIVEhwnd, &rect );
785	GetCursorPos (&point);
786
787	// make sure these coordinates are relative to the native window,
788	// not the whole desktop
789	ScreenToClient(NATIVEhwnd, &point);
790
791	// calculate the new position of the virtual cursor
792	pos[0] = (int)(point.x * WidthRatio);
793	pos[1] = (int)((NativeHeight - point.y) * HeightRatio);
794	}
795	else
796	{
797	pos[0] = 0;
798	pos[1] = 0;
799	}
800	}
801
802	#elif defined(Darwin)
803
804	extern OSStatus CGSGetScreenRectForWindow( CGSConnectionID cid, CGSWindowID wid, float *outRect );
805	extern OSStatus CGSGetWindowBounds( CGSConnectionID cid, CGSWindowID wid, float *bounds );
806
807	void
808	stubGetWindowGeometry( const WindowInfo window, int x, int y, unsigned int w, unsigned int *h )
809	{
810	float rect[4];
811
812	if( !window \|\|
813	!window->connection \|\|
814	!window->drawable \|\|
815	CGSGetWindowBounds( window->connection, window->drawable, rect ) != noErr )
816	{
817	x = y = 0;
818	w = h = 0;
819	} else {
820	*x = (int) rect[0];
821	*y = (int) rect[1];
822	*w = (int) rect[2];
823	*h = (int) rect[3];
824	}
825	}
826
827
828	static void
829	GetWindowTitle( const WindowInfo window, char title )
830	{
831	/* XXX \todo Darwin window Title */
832	title[0] = '\0';
833	}
834
835
836	static void
837	GetCursorPosition( const WindowInfo *window, int pos[2] )
838	{
839	Point mouse_pos;
840	float window_rect[4];
841
842	GetMouse( &mouse_pos );
843	CGSGetScreenRectForWindow( window->connection, window->drawable, window_rect );
844
845	pos[0] = mouse_pos.h - (int) window_rect[0];
846	pos[1] = (int) window_rect[3] - (mouse_pos.v - (int) window_rect[1]);
847
848	/crDebug( "%i %i", pos[0], pos[1] );/
849	}
850
851	#elif defined(GLX)
852
853	void
854	stubGetWindowGeometry(WindowInfo window, int x, int y, unsigned int w, unsigned int *h)
855	{
856	Window root, child;
857	unsigned int border, depth;
858	Display *dpy;
859
860	dpy = stubGetWindowDisplay(window);
861
862	//@todo: Performing those checks is expensive operation, especially for simple apps with high FPS.
863	// Disabling those triples glxgears fps, thus using xevents instead of per frame polling is much more preferred.
864	//@todo: Check similar on windows guests, though doubtful as there're no XSync like calls on windows.
865	if (window && dpy)
866	{
867	XLOCK(dpy);
868	}
869
870	if (!window
871	\|\| !dpy
872	\|\| !window->drawable
873	\|\| !XGetGeometry(dpy, window->drawable, &root, x, y, w, h, &border, &depth)
874	\|\| !XTranslateCoordinates(dpy, window->drawable, root, 0, 0, x, y, &child))
875	{
876	crWarning("Failed to get windows geometry for %p, try xwininfo", window);
877	x = y = 0;
878	w = h = 0;
879	}
880
881	if (window && dpy)
882	{
883	XUNLOCK(dpy);
884	}
885	}
886
887	static char *
888	GetWindowTitleHelper( Display *dpy, Window window, GLboolean recurseUp )
889	{
890	while (1) {
891	char *name;
892	if (!XFetchName(dpy, window, &name))
893	return NULL;
894	if (name[0]) {
895	return name;
896	}
897	else if (recurseUp) {
898	/* This window has no name, try the parent */
899	Status stat;
900	Window root, parent, *children;
901	unsigned int numChildren;
902	stat = XQueryTree( dpy, window, &root, &parent,
903	&children, &numChildren );
904	if (!stat \|\| window == root)
905	return NULL;
906	if (children)
907	XFree(children);
908	window = parent;
909	}
910	else {
911	XFree(name);
912	return NULL;
913	}
914	}
915	}
916
917	static void
918	GetWindowTitle( const WindowInfo window, char title )
919	{
920	char *t = GetWindowTitleHelper(window->dpy, window->drawable, GL_TRUE);
921	if (t) {
922	crStrcpy(title, t);
923	XFree(t);
924	}
925	else {
926	title[0] = 0;
927	}
928	}
929
930
931	/**
932	*Return current cursor position in local window coords.
933	*/
934	static void
935	GetCursorPosition(WindowInfo *window, int pos[2] )
936	{
937	int rootX, rootY;
938	Window root, child;
939	unsigned int mask;
940	int x, y;
941
942	XLOCK(window->dpy);
943
944	Bool q = XQueryPointer(window->dpy, window->drawable, &root, &child,
945	&rootX, &rootY, &pos[0], &pos[1], &mask);
946	if (q) {
947	unsigned int w, h;
948	stubGetWindowGeometry( window, &x, &y, &w, &h );
949	/* invert Y */
950	pos[1] = (int) h - pos[1] - 1;
951	}
952	else {
953	pos[0] = pos[1] = 0;
954	}
955
956	XUNLOCK(window->dpy);
957	}
958
959	#endif
960
961
962	/**
963	* This function is called by MakeCurrent() and determines whether or
964	* not a new rendering context should be bound to Chromium or the native
965	* OpenGL.
966	* \return GL_FALSE if native OpenGL should be used, or GL_TRUE if Chromium
967	* should be used.
968	*/
969	static GLboolean
970	stubCheckUseChromium( WindowInfo *window )
971	{
972	int x, y;
973	unsigned int w, h;
974
975	/* If the provided window is CHROMIUM, we're clearly intended
976	* to create a CHROMIUM context.
977	*/
978	if (window->type == CHROMIUM)
979	return GL_TRUE;
980
981	if (stub.ignoreFreeglutMenus) {
982	const char *glutMenuTitle = "freeglut menu";
983	char title[1000];
984	GetWindowTitle(window, title);
985	if (crStrcmp(title, glutMenuTitle) == 0) {
986	crDebug("GL faker: Ignoring freeglut menu window");
987	return GL_FALSE;
988	}
989	}
990
991	/* If the user's specified a window count for Chromium, see if
992	* this window satisfies that criterium.
993	*/
994	stub.matchChromiumWindowCounter++;
995	if (stub.matchChromiumWindowCount > 0) {
996	if (stub.matchChromiumWindowCounter != stub.matchChromiumWindowCount) {
997	crDebug("Using native GL, app window doesn't meet match_window_count");
998	return GL_FALSE;
999	}
1000	}
1001
1002	/* If the user's specified a window list to ignore, see if this
1003	* window satisfies that criterium.
1004	*/
1005	if (stub.matchChromiumWindowID) {
1006	GLuint i;
1007
1008	for (i = 0; i <= stub.numIgnoreWindowID; i++) {
1009	if (stub.matchChromiumWindowID[i] == stub.matchChromiumWindowCounter) {
1010	crDebug("Ignore window ID %d, using native GL", stub.matchChromiumWindowID[i]);
1011	return GL_FALSE;
1012	}
1013	}
1014	}
1015
1016	/* If the user's specified a minimum window size for Chromium, see if
1017	* this window satisfies that criterium.
1018	*/
1019	if (stub.minChromiumWindowWidth > 0 &&
1020	stub.minChromiumWindowHeight > 0) {
1021	stubGetWindowGeometry( window, &x, &y, &w, &h );
1022	if (w >= stub.minChromiumWindowWidth &&
1023	h >= stub.minChromiumWindowHeight) {
1024
1025	/* Check for maximum sized window now too */
1026	if (stub.maxChromiumWindowWidth &&
1027	stub.maxChromiumWindowHeight) {
1028	if (w < stub.maxChromiumWindowWidth &&
1029	h < stub.maxChromiumWindowHeight)
1030	return GL_TRUE;
1031	else
1032	return GL_FALSE;
1033	}
1034
1035	return GL_TRUE;
1036	}
1037	crDebug("Using native GL, app window doesn't meet minimum_window_size");
1038	return GL_FALSE;
1039	}
1040	else if (stub.matchWindowTitle) {
1041	/* If the user's specified a window title for Chromium, see if this
1042	* window satisfies that criterium.
1043	*/
1044	GLboolean wildcard = GL_FALSE;
1045	char title[1000];
1046	char *titlePattern;
1047	int len;
1048	/* check for leading '' wildcard /
1049	if (stub.matchWindowTitle[0] == '*') {
1050	titlePattern = crStrdup( stub.matchWindowTitle + 1 );
1051	wildcard = GL_TRUE;
1052	}
1053	else {
1054	titlePattern = crStrdup( stub.matchWindowTitle );
1055	}
1056	/* check for trailing '' wildcard /
1057	len = crStrlen(titlePattern);
1058	if (len > 0 && titlePattern[len - 1] == '*') {
1059	titlePattern[len - 1] = '\0'; /* terminate here */
1060	wildcard = GL_TRUE;
1061	}
1062
1063	GetWindowTitle( window, title );
1064	if (title[0]) {
1065	if (wildcard) {
1066	if (crStrstr(title, titlePattern)) {
1067	crFree(titlePattern);
1068	return GL_TRUE;
1069	}
1070	}
1071	else if (crStrcmp(title, titlePattern) == 0) {
1072	crFree(titlePattern);
1073	return GL_TRUE;
1074	}
1075	}
1076	crFree(titlePattern);
1077	crDebug("Using native GL, app window title doesn't match match_window_title string (\"%s\" != \"%s\")", title, stub.matchWindowTitle);
1078	return GL_FALSE;
1079	}
1080
1081	/* Window title and size don't matter */
1082	CRASSERT(stub.minChromiumWindowWidth == 0);
1083	CRASSERT(stub.minChromiumWindowHeight == 0);
1084	CRASSERT(stub.matchWindowTitle == NULL);
1085
1086	/* User hasn't specified a width/height or window title.
1087	* We'll use chromium for this window (and context) if no other is.
1088	*/
1089
1090	return GL_TRUE; /* use Chromium! */
1091	}
1092
1093	static void stubWindowCheckOwnerCB(unsigned long key, void data1, void data2)
1094	{
1095	WindowInfo pWindow = (WindowInfo ) data1;
1096	ContextInfo pCtx = (ContextInfo ) data2;
1097
1098	if (pWindow->pOwner == pCtx)
1099	{
1100	#ifdef WINDOWS
1101	/* Note: can't use WindowFromDC(context->pOwnWindow->drawable) here
1102	because GL context is already released from DC and actual guest window
1103	could be destroyed.
1104	*/
1105	stubDestroyWindow(CR_CTX_CON(pCtx), (GLint)pWindow->hWnd);
1106	#else
1107	stubDestroyWindow(CR_CTX_CON(pCtx), (GLint)pWindow->drawable);
1108	#endif
1109	}
1110	}
1111
1112	GLboolean stubCtxCreate(ContextInfo *context)
1113	{
1114	/*
1115	* Create a Chromium context.
1116	*/
1117	#if defined(GLX) \|\| defined(DARWIN)
1118	GLint spuShareCtx = context->share ? context->share->spuContext : 0;
1119	#else
1120	GLint spuShareCtx = 0;
1121	#endif
1122	GLint spuConnection = 0;
1123	CRASSERT(stub.spu);
1124	CRASSERT(stub.spu->dispatch_table.CreateContext);
1125	context->type = CHROMIUM;
1126
1127	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
1128	if (context->pHgsmi)
1129	{
1130	spuConnection = stub.spu->dispatch_table.VBoxConCreate(context->pHgsmi);
1131	if (!spuConnection)
1132	{
1133	crWarning("VBoxConCreate failed");
1134	return GL_FALSE;
1135	}
1136	context->spuConnection = spuConnection;
1137	}
1138	#endif
1139
1140	context->spuContext
1141	= stub.spu->dispatch_table.VBoxCreateContext(spuConnection, context->dpyName,
1142	context->visBits,
1143	spuShareCtx);
1144
1145	return GL_TRUE;
1146	}
1147
1148	GLboolean stubCtxCheckCreate(ContextInfo *context)
1149	{
1150	if (context->type == UNDECIDED)
1151	return stubCtxCreate(context);
1152	return CHROMIUM == context->type;
1153	}
1154
1155
1156	GLboolean
1157	stubMakeCurrent( WindowInfo window, ContextInfo context )
1158	{
1159	GLboolean retVal;
1160
1161	/*
1162	* Get WindowInfo and ContextInfo pointers.
1163	*/
1164
1165	if (!context \|\| !window) {
1166	ContextInfo * currentContext = stubGetCurrentContext();
1167	if (currentContext)
1168	currentContext->currentDrawable = NULL;
1169	if (context)
1170	context->currentDrawable = NULL;
1171	stubSetCurrentContext(NULL);
1172	return GL_TRUE; /* OK */
1173	}
1174
1175	#ifdef CHROMIUM_THREADSAFE
1176	stubCheckMultithread();
1177	#endif
1178
1179	if (context->type == UNDECIDED) {
1180	/* Here's where we really create contexts */
1181	#ifdef CHROMIUM_THREADSAFE
1182	crLockMutex(&stub.mutex);
1183	#endif
1184
1185	if (stubCheckUseChromium(window)) {
1186	GLint spuConnection = 0;
1187
1188	if (!stubCtxCreate(context))
1189	{
1190	crWarning("stubCtxCreate failed");
1191	return GL_FALSE;
1192	}
1193
1194	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
1195	spuConnection = context->spuConnection;
1196	#endif
1197
1198	if (window->spuWindow == -1)
1199	{
1200	/crDebug("(1)stubMakeCurrent ctx=%p(%i) window=%p(%i)", context, context->spuContext, window, window->spuWindow);/
1201	window->spuWindow = stub.spu->dispatch_table.VBoxWindowCreate(spuConnection, window->dpyName, context->visBits );
1202	#ifdef CR_NEWWINTRACK
1203	window->u32ClientID = stub.spu->dispatch_table.VBoxPackGetInjectID(spuConnection);
1204	#endif
1205	}
1206	}
1207	else {
1208	/*
1209	* Create a native OpenGL context.
1210	*/
1211	if (!InstantiateNativeContext(window, context))
1212	{
1213	#ifdef CHROMIUM_THREADSAFE
1214	crUnlockMutex(&stub.mutex);
1215	#endif
1216	return 0; /* false */
1217	}
1218	context->type = NATIVE;
1219	}
1220
1221	#ifdef CHROMIUM_THREADSAFE
1222	crUnlockMutex(&stub.mutex);
1223	#endif
1224	}
1225
1226
1227	if (context->type == NATIVE) {
1228	/*
1229	* Native OpenGL MakeCurrent().
1230	*/
1231	#ifdef WINDOWS
1232	retVal = (GLboolean) stub.wsInterface.wglMakeCurrent( window->drawable, context->hglrc );
1233	#elif defined(Darwin)
1234	// XXX \todo We need to differentiate between these two..
1235	retVal = ( stub.wsInterface.CGLSetSurface(context->cglc, window->connection, window->drawable, window->surface) == noErr );
1236	retVal = ( stub.wsInterface.CGLSetCurrentContext(context->cglc) == noErr );
1237	#elif defined(GLX)
1238	retVal = (GLboolean) stub.wsInterface.glXMakeCurrent( window->dpy, window->drawable, context->glxContext );
1239	#endif
1240	}
1241	else {
1242	/*
1243	* SPU chain MakeCurrent().
1244	*/
1245	CRASSERT(context->type == CHROMIUM);
1246	CRASSERT(context->spuContext >= 0);
1247
1248	/*if (context->currentDrawable && context->currentDrawable != window)
1249	crDebug("Rebinding context %p to a different window", context);*/
1250
1251	if (window->type == NATIVE) {
1252	crWarning("Can't rebind a chromium context to a native window\n");
1253	retVal = 0;
1254	}
1255	else {
1256	if (window->spuWindow == -1)
1257	{
1258	/crDebug("(2)stubMakeCurrent ctx=%p(%i) window=%p(%i)", context, context->spuContext, window, window->spuWindow);/
1259	window->spuWindow = stub.spu->dispatch_table.VBoxWindowCreate(
1260	#if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
1261	context->spuConnection,
1262	#else
1263	0,
1264	#endif
1265	window->dpyName, context->visBits );
1266	#ifdef CR_NEWWINTRACK
1267	window->u32ClientID = stub.spu->dispatch_table.VBoxPackGetInjectID(
1268	# if defined(VBOX_WITH_CRHGSMI) && defined(IN_GUEST)
1269	context->spuConnection
1270	# else
1271	0
1272	# endif
1273	);
1274	#endif
1275	if (context->currentDrawable && context->currentDrawable->type==CHROMIUM
1276	&& context->currentDrawable->pOwner==context)
1277	{
1278	#ifdef WINDOWS
1279	if (context->currentDrawable->hWnd!=WindowFromDC(context->currentDrawable->drawable))
1280	{
1281	stubDestroyWindow(CR_CTX_CON(context), (GLint)context->currentDrawable->hWnd);
1282	}
1283	#else
1284	Window root;
1285	int x, y;
1286	unsigned int border, depth, w, h;
1287
1288	XLOCK(context->currentDrawable->dpy);
1289	if (!XGetGeometry(context->currentDrawable->dpy, context->currentDrawable->drawable, &root, &x, &y, &w, &h, &border, &depth))
1290	{
1291	stubDestroyWindow(CR_CTX_CON(context), (GLint)context->currentDrawable->drawable);
1292	}
1293	XUNLOCK(context->currentDrawable->dpy);
1294	#endif
1295
1296	}
1297	}
1298
1299	if (window->spuWindow != (GLint)window->drawable)
1300	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, (GLint) window->drawable, context->spuContext );
1301	else
1302	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, 0, /* native window handle */ context->spuContext );
1303
1304	retVal = 1;
1305	}
1306	}
1307
1308	window->type = context->type;
1309	window->pOwner = context;
1310	context->currentDrawable = window;
1311	stubSetCurrentContext(context);
1312
1313	if (retVal) {
1314	/* Now, if we've transitions from Chromium to native rendering, or
1315	* vice versa, we have to change all the OpenGL entrypoint pointers.
1316	*/
1317	if (context->type == NATIVE) {
1318	/* Switch to native API */
1319	/printf(" Switching to native API\n");/
1320	stubSetDispatch(&stub.nativeDispatch);
1321	}
1322	else if (context->type == CHROMIUM) {
1323	/* Switch to stub (SPU) API */
1324	/printf(" Switching to spu API\n");/
1325	stubSetDispatch(&stub.spuDispatch);
1326	}
1327	else {
1328	/* no API switch needed */
1329	}
1330	}
1331
1332	if (!window->width && window->type == CHROMIUM) {
1333	/* One time window setup */
1334	int x, y;
1335	unsigned int winW, winH;
1336
1337	stubGetWindowGeometry( window, &x, &y, &winW, &winH );
1338
1339	/* If we're not using GLX/WGL (no app window) we'll always get
1340	* a width and height of zero here. In that case, skip the viewport
1341	* call since we're probably using a tilesort SPU with fake_window_dims
1342	* which the tilesort SPU will use for the viewport.
1343	*/
1344	window->width = winW;
1345	window->height = winH;
1346	#if defined(WINDOWS) && defined(VBOX_WITH_WDDM)
1347	if (stubIsWindowVisible(window))
1348	#endif
1349	{
1350	if (stub.trackWindowSize)
1351	stub.spuDispatch.WindowSize( window->spuWindow, winW, winH );
1352	if (stub.trackWindowPos)
1353	stub.spuDispatch.WindowPosition(window->spuWindow, x, y);
1354	if (winW > 0 && winH > 0)
1355	stub.spu->dispatch_table.Viewport( 0, 0, winW, winH );
1356	}
1357	#ifdef VBOX_WITH_WDDM
1358	if (stub.trackWindowVisibleRgn)
1359	stub.spu->dispatch_table.WindowVisibleRegion(window->spuWindow, 0, NULL);
1360	#endif
1361	}
1362
1363	/* Update window mapping state.
1364	* Basically, this lets us hide render SPU windows which correspond
1365	* to unmapped application windows. Without this, "pertly" (for example)
1366	* opens lots of temporary windows which otherwise clutter the screen.
1367	*/
1368	if (stub.trackWindowVisibility && window->type == CHROMIUM && window->drawable) {
1369	const int mapped = stubIsWindowVisible(window);
1370	if (mapped != window->mapped) {
1371	crDebug("Dispatched: WindowShow(%i, %i)", window->spuWindow, mapped);
1372	stub.spu->dispatch_table.WindowShow(window->spuWindow, mapped);
1373	window->mapped = mapped;
1374	}
1375	}
1376
1377	return retVal;
1378	}
1379
1380	void
1381	stubDestroyContext( unsigned long contextId )
1382	{
1383	ContextInfo *context;
1384
1385	if (!stub.contextTable) {
1386	return;
1387	}
1388
1389	/* the lock order is windowTable->contextTable (see wglMakeCurrent_prox, glXMakeCurrent)
1390	* this is why we need to take a windowTable lock since we will later do stub.windowTable access & locking */
1391	crHashtableLock(stub.windowTable);
1392	crHashtableLock(stub.contextTable);
1393
1394	context = (ContextInfo *) crHashtableSearch(stub.contextTable, contextId);
1395
1396	CRASSERT(context);
1397
1398	stubDestroyContextLocked(context);
1399
1400	#ifdef CHROMIUM_THREADSAFE
1401	if (stubGetCurrentContext() == context) {
1402	stubSetCurrentContext(NULL);
1403	}
1404
1405	VBoxTlsRefMarkDestroy(context);
1406	VBoxTlsRefRelease(context);
1407	#else
1408	if (stubGetCurrentContext() == context) {
1409	stubSetCurrentContext(NULL);
1410	}
1411	stubContextFree(context);
1412	#endif
1413	crHashtableUnlock(stub.contextTable);
1414	crHashtableUnlock(stub.windowTable);
1415	}
1416
1417	void
1418	stubSwapBuffers(WindowInfo *window, GLint flags)
1419	{
1420	if (!window)
1421	return;
1422
1423	/* Determine if this window is being rendered natively or through
1424	* Chromium.
1425	*/
1426
1427	if (window->type == NATIVE) {
1428	/printf("** Swapping native window %d\n", (int) drawable);*/
1429	#ifdef WINDOWS
1430	(void) stub.wsInterface.wglSwapBuffers( window->drawable );
1431	#elif defined(Darwin)
1432	/* ...is this ok? */
1433	/* stub.wsInterface.CGLFlushDrawable( context->cglc ); */
1434	crDebug("stubSwapBuffers: unable to swap (no context!)");
1435	#elif defined(GLX)
1436	stub.wsInterface.glXSwapBuffers( window->dpy, window->drawable );
1437	#endif
1438	}
1439	else if (window->type == CHROMIUM) {
1440	/* Let the SPU do the buffer swap */
1441	/printf("** Swapping chromium window %d\n", (int) drawable);*/
1442	if (stub.appDrawCursor) {
1443	int pos[2];
1444	GetCursorPosition(window, pos);
1445	stub.spu->dispatch_table.ChromiumParametervCR(GL_CURSOR_POSITION_CR, GL_INT, 2, pos);
1446	}
1447	stub.spu->dispatch_table.SwapBuffers( window->spuWindow, flags );
1448	}
1449	else {
1450	crDebug("Calling SwapBuffers on a window we haven't seen before (no-op).");
1451	}
1452	}

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source: vbox/trunk/src/VBox/Additions/common/crOpenGL/context.c@ 53517

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