context.c@ 39570

Last change on this file since 39570 was 39568, checked in by vboxsync, 13 years ago
crOpenGL: more threading fixes
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 35.5 KB

Line
1	/* Copyright (c) 2001, Stanford University
2	* All rights reserved
3	*
4	* See the file LICENSE.txt for information on redistributing this software.
5	*/
6
7	/**
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
91	/**
92	* Create a new _Chromium_ window, not GLX, WGL or CGL.
93	* Called by crWindowCreate() only.
94	*/
95	GLint
96	stubNewWindow( const char *dpyName, GLint visBits )
97	{
98	WindowInfo *winInfo;
99	GLint spuWin, size[2];
100
101	spuWin = stub.spu->dispatch_table.WindowCreate( dpyName, visBits );
102	if (spuWin < 0) {
103	return -1;
104	}
105
106	winInfo = (WindowInfo *) crCalloc(sizeof(WindowInfo));
107	if (!winInfo) {
108	stub.spu->dispatch_table.WindowDestroy(spuWin);
109	return -1;
110	}
111
112	winInfo->type = CHROMIUM;
113
114	/* Ask the head SPU for the initial window size */
115	size[0] = size[1] = 0;
116	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, 0, GL_INT, 2, size);
117	if (size[0] == 0 && size[1] == 0) {
118	/* use some reasonable defaults */
119	size[0] = size[1] = 512;
120	}
121	winInfo->width = size[0];
122	winInfo->height = size[1];
123	winInfo->mapped = 1;
124
125	if (!dpyName)
126	dpyName = "";
127
128	crStrncpy(winInfo->dpyName, dpyName, MAX_DPY_NAME);
129	winInfo->dpyName[MAX_DPY_NAME-1] = 0;
130
131	/* Use spuWin as the hash table index and GLX/WGL handle */
132	#ifdef WINDOWS
133	winInfo->drawable = (HDC) spuWin;
134	winInfo->hVisibleRegion = INVALID_HANDLE_VALUE;
135	#elif defined(Darwin)
136	winInfo->drawable = (CGSWindowID) spuWin;
137	#elif defined(GLX)
138	winInfo->drawable = (GLXDrawable) spuWin;
139	winInfo->pVisibleRegions = NULL;
140	winInfo->cVisibleRegions = 0;
141	#endif
142	#ifdef CR_NEWWINTRACK
143	winInfo->u32ClientID = stub.spu->dispatch_table.VBoxPackGetInjectID();
144	#endif
145	winInfo->spuWindow = spuWin;
146
147	crHashtableAdd(stub.windowTable, (unsigned int) spuWin, winInfo);
148
149	return spuWin;
150	}
151
152	#ifdef GLX
153	static XErrorHandler oldErrorHandler;
154	static unsigned char lastXError = Success;
155
156	static int
157	errorHandler (Display dpy, XErrorEvent e)
158	{
159	lastXError = e->error_code;
160	return 0;
161	}
162	#endif
163
164	GLboolean
165	stubIsWindowVisible(WindowInfo *win)
166	{
167	#if defined(WINDOWS)
168	return GL_TRUE;
169	#elif defined(Darwin)
170	return GL_TRUE;
171	#elif defined(GLX)
172	Display *dpy = stubGetWindowDisplay(win);
173	if (dpy)
174	{
175	XWindowAttributes attr;
176	XLOCK(dpy);
177	XGetWindowAttributes(dpy, win->drawable, &attr);
178	XUNLOCK(dpy);
179
180	if (attr.map_state == IsUnmapped)
181	{
182	return GL_FALSE;
183	}
184	# if 1
185	return GL_TRUE;
186	# else
187	if (attr.override_redirect)
188	{
189	return GL_TRUE;
190	}
191
192	if (!stub.bXExtensionsChecked)
193	{
194	stubCheckXExtensions(win);
195	}
196
197	if (!stub.bHaveXComposite)
198	{
199	return GL_TRUE;
200	}
201	else
202	{
203	Pixmap p;
204
205	crLockMutex(&stub.mutex);
206
207	XLOCK(dpy);
208	XSync(dpy, false);
209	oldErrorHandler = XSetErrorHandler(errorHandler);
210	/@todo this will create new pixmap for window every call/
211	p = XCompositeNameWindowPixmap(dpy, win->drawable);
212	XSync(dpy, false);
213	XSetErrorHandler(oldErrorHandler);
214	XUNLOCK(dpy);
215
216	switch (lastXError)
217	{
218	case Success:
219	XFreePixmap(dpy, p);
220	crUnlockMutex(&stub.mutex);
221	return GL_FALSE;
222	break;
223	case BadMatch:
224	/Window isn't redirected/
225	lastXError = Success;
226	break;
227	default:
228	crWarning("Unexpected XError %i", (int)lastXError);
229	lastXError = Success;
230	}
231
232	crUnlockMutex(&stub.mutex);
233
234	return GL_TRUE;
235	}
236	# endif
237	}
238	else {
239	/* probably created by crWindowCreate() */
240	return win->mapped;
241	}
242	#endif
243	}
244
245
246	/**
247	* Given a Windows HDC or GLX Drawable, return the corresponding
248	* WindowInfo structure. Create a new one if needed.
249	*/
250	WindowInfo *
251	#ifdef WINDOWS
252	stubGetWindowInfo( HDC drawable )
253	#elif defined(Darwin)
254	stubGetWindowInfo( CGSWindowID drawable )
255	#elif defined(GLX)
256	stubGetWindowInfo( Display *dpy, GLXDrawable drawable )
257	#endif
258	{
259	#ifndef WINDOWS
260	WindowInfo winInfo = (WindowInfo ) crHashtableSearch(stub.windowTable, (unsigned int) drawable);
261	#else
262	WindowInfo *winInfo;
263	HWND hwnd;
264	hwnd = WindowFromDC(drawable);
265
266	if (!hwnd)
267	{
268	return NULL;
269	}
270
271	winInfo = (WindowInfo *) crHashtableSearch(stub.windowTable, (unsigned int) hwnd);
272	#endif
273	if (!winInfo) {
274	winInfo = (WindowInfo *) crCalloc(sizeof(WindowInfo));
275	if (!winInfo)
276	return NULL;
277	#ifdef GLX
278	crStrncpy(winInfo->dpyName, DisplayString(dpy), MAX_DPY_NAME);
279	winInfo->dpyName[MAX_DPY_NAME-1] = 0;
280	winInfo->dpy = dpy;
281	winInfo->pVisibleRegions = NULL;
282	#elif defined(Darwin)
283	winInfo->connection = _CGSDefaultConnection(); // store our connection as default
284	#elif defined(WINDOWS)
285	winInfo->hVisibleRegion = INVALID_HANDLE_VALUE;
286	winInfo->hWnd = hwnd;
287	#endif
288	winInfo->drawable = drawable;
289	winInfo->type = UNDECIDED;
290	winInfo->spuWindow = -1;
291	winInfo->mapped = -1; /* don't know */
292	winInfo->pOwner = NULL;
293	#ifdef CR_NEWWINTRACK
294	winInfo->u32ClientID = -1;
295	#endif
296	#ifndef WINDOWS
297	crHashtableAdd(stub.windowTable, (unsigned int) drawable, winInfo);
298	#else
299	crHashtableAdd(stub.windowTable, (unsigned int) hwnd, winInfo);
300	#endif
301	}
302	#ifdef WINDOWS
303	else
304	{
305	winInfo->drawable = drawable;
306	}
307	#endif
308	return winInfo;
309	}
310
311	static void stubWindowCheckOwnerCB(unsigned long key, void data1, void data2);
312
313	static void
314	stubDestroyContextLocked( ContextInfo *context )
315	{
316	unsigned long contextId = context->id;
317	if (context->type == NATIVE) {
318	#ifdef WINDOWS
319	stub.wsInterface.wglDeleteContext( context->hglrc );
320	#elif defined(Darwin)
321	stub.wsInterface.CGLDestroyContext( context->cglc );
322	#elif defined(GLX)
323	stub.wsInterface.glXDestroyContext( context->dpy, context->glxContext );
324	#endif
325	}
326	else if (context->type == CHROMIUM) {
327	/* Have pack SPU or tilesort SPU, etc. destroy the context */
328	CRASSERT(context->spuContext >= 0);
329	stub.spu->dispatch_table.DestroyContext( context->spuContext );
330	crHashtableWalk(stub.windowTable, stubWindowCheckOwnerCB, context);
331	}
332
333	#ifdef GLX
334	crFreeHashtable(context->pGLXPixmapsHash, crFree);
335	if (context->damageDpy)
336	{
337	XCloseDisplay(context->damageDpy);
338	}
339	#endif
340
341	crMemZero(context, sizeof(ContextInfo)); /* just to be safe */
342	crHashtableDelete(stub.contextTable, contextId, crFree);
343	}
344
345	#ifdef CHROMIUM_THREADSAFE
346	static DECLCALLBACK(void) stubContextDtor(void*pvContext)
347	{
348	crHashtableLock(stub.contextTable);
349	stubDestroyContextLocked((ContextInfo*)pvContext);
350	crHashtableUnlock(stub.contextTable);
351	}
352	#endif
353
354	/**
355	* Allocate a new ContextInfo object, initialize it, put it into the
356	* context hash table. If type==CHROMIUM, call the head SPU's
357	* CreateContext() function too.
358	*/
359	ContextInfo *
360	stubNewContext( const char *dpyName, GLint visBits, ContextType type,
361	unsigned long shareCtx )
362	{
363	GLint spuContext = -1, spuShareCtx = 0;
364	ContextInfo *context;
365
366	if (shareCtx > 0) {
367	/* translate shareCtx to a SPU context ID */
368	context = (ContextInfo *)
369	crHashtableSearch(stub.contextTable, shareCtx);
370	if (context)
371	spuShareCtx = context->spuContext;
372	}
373
374	if (type == CHROMIUM) {
375	spuContext
376	= stub.spu->dispatch_table.CreateContext(dpyName, visBits, spuShareCtx);
377	if (spuContext < 0)
378	return NULL;
379	}
380
381	context = crCalloc(sizeof(ContextInfo));
382	if (!context) {
383	stub.spu->dispatch_table.DestroyContext(spuContext);
384	return NULL;
385	}
386
387	if (!dpyName)
388	dpyName = "";
389
390	context->id = stub.freeContextNumber++;
391	context->type = type;
392	context->spuContext = spuContext;
393	context->visBits = visBits;
394	context->currentDrawable = NULL;
395	crStrncpy(context->dpyName, dpyName, MAX_DPY_NAME);
396	context->dpyName[MAX_DPY_NAME-1] = 0;
397
398	#ifdef CHROMIUM_THREADSAFE
399	crTSDRefInit(context, stubContextDtor);
400	#endif
401
402	#if defined(GLX) \|\| defined(DARWIN)
403	context->share = (ContextInfo *)
404	crHashtableSearch(stub.contextTable, (unsigned long) shareCtx);
405	#endif
406
407	#ifdef GLX
408	context->pGLXPixmapsHash = crAllocHashtable();
409	context->damageInitFailed = GL_FALSE;
410	context->damageDpy = NULL;
411	context->damageEventsBase = 0;
412	#endif
413
414	crHashtableAdd(stub.contextTable, context->id, (void *) context);
415
416	return context;
417	}
418
419
420	#ifdef Darwin
421
422	#define SET_ATTR(l,i,a) ( (l)[(i)++] = (a) )
423	#define SET_ATTR_V(l,i,a,v) ( SET_ATTR(l,i,a), SET_ATTR(l,i,v) )
424
425	void stubSetPFA( ContextInfo ctx, CGLPixelFormatAttribute attribs, int size, GLint *num ) {
426	GLuint visual = ctx->visBits;
427	int i = 0;
428
429	CRASSERT(visual & CR_RGB_BIT);
430
431	SET_ATTR_V(attribs, i, kCGLPFAColorSize, 8);
432
433	if( visual & CR_DEPTH_BIT )
434	SET_ATTR_V(attribs, i, kCGLPFADepthSize, 16);
435
436	if( visual & CR_ACCUM_BIT )
437	SET_ATTR_V(attribs, i, kCGLPFAAccumSize, 1);
438
439	if( visual & CR_STENCIL_BIT )
440	SET_ATTR_V(attribs, i, kCGLPFAStencilSize, 1);
441
442	if( visual & CR_ALPHA_BIT )
443	SET_ATTR_V(attribs, i, kCGLPFAAlphaSize, 1);
444
445	if( visual & CR_DOUBLE_BIT )
446	SET_ATTR(attribs, i, kCGLPFADoubleBuffer);
447
448	if( visual & CR_STEREO_BIT )
449	SET_ATTR(attribs, i, kCGLPFAStereo);
450
451	/* SET_ATTR_V(attribs, i, kCGLPFASampleBuffers, 1);
452	SET_ATTR_V(attribs, i, kCGLPFASamples, 0);
453	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, 0); */
454	SET_ATTR(attribs, i, kCGLPFABackingStore);
455	SET_ATTR(attribs, i, kCGLPFAWindow);
456	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, ctx->disp_mask);
457
458	SET_ATTR(attribs, i, 0);
459
460	*num = i;
461	}
462
463	#endif
464
465	/**
466	* This creates a native GLX/WGL context.
467	*/
468	static GLboolean
469	InstantiateNativeContext( WindowInfo window, ContextInfo context )
470	{
471	#ifdef WINDOWS
472	context->hglrc = stub.wsInterface.wglCreateContext( window->drawable );
473	return context->hglrc ? GL_TRUE : GL_FALSE;
474	#elif defined(Darwin)
475	CGLContextObj shareCtx = NULL;
476	CGLPixelFormatObj pix;
477	long npix;
478
479	CGLPixelFormatAttribute attribs[16];
480	GLint ind = 0;
481
482	if( context->share ) {
483	if( context->cglc != context->share->cglc ) {
484	crWarning("CGLCreateContext() is trying to share a non-existant "
485	"CGL context. Setting share context to zero.");
486	shareCtx = 0;
487	}
488	else
489	shareCtx = context->cglc;
490	}
491
492	stubSetPFA( context, attribs, 16, &ind );
493
494	stub.wsInterface.CGLChoosePixelFormat( attribs, &pix, &npix );
495	stub.wsInterface.CGLCreateContext( pix, shareCtx, &context->cglc );
496	if( !context->cglc )
497	crError("InstantiateNativeContext: Couldn't Create the context!");
498
499	stub.wsInterface.CGLDestroyPixelFormat( pix );
500
501	if( context->parambits ) {
502	/* Set the delayed parameters */
503	if( context->parambits & VISBIT_SWAP_RECT )
504	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapRectangle, context->swap_rect );
505
506	if( context->parambits & VISBIT_SWAP_INTERVAL )
507	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapInterval, &(context->swap_interval) );
508
509	if( context->parambits & VISBIT_CLIENT_STORAGE )
510	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPClientStorage, (long*)&(context->client_storage) );
511
512	context->parambits = 0;
513	}
514
515	return context->cglc ? GL_TRUE : GL_FALSE;
516	#elif defined(GLX)
517	GLXContext shareCtx = 0;
518
519	/* sort out context sharing here */
520	if (context->share) {
521	if (context->glxContext != context->share->glxContext) {
522	crWarning("glXCreateContext() is trying to share a non-existant "
523	"GLX context. Setting share context to zero.");
524	shareCtx = 0;
525	}
526	else {
527	shareCtx = context->glxContext;
528	}
529	}
530
531	context->glxContext = stub.wsInterface.glXCreateContext( window->dpy,
532	context->visual, shareCtx, context->direct );
533
534	return context->glxContext ? GL_TRUE : GL_FALSE;
535	#endif
536	}
537
538
539	/**
540	* Utility functions to get window size and titlebar text.
541	*/
542	#ifdef WINDOWS
543
544	void
545	stubGetWindowGeometry(const WindowInfo window, int x, int *y,
546	unsigned int w, unsigned int h )
547	{
548	RECT rect;
549
550	if (!window->drawable \|\| !window->hWnd) {
551	w = h = 0;
552	return;
553	}
554
555	if (window->hWnd!=WindowFromDC(window->drawable))
556	{
557	crWarning("Window(%i) DC is no longer valid", window->spuWindow);
558	return;
559	}
560
561	if (!GetClientRect(window->hWnd, &rect))
562	{
563	crWarning("GetClientRect failed for %p", window->hWnd);
564	w = h = 0;
565	return;
566	}
567	*w = rect.right - rect.left;
568	*h = rect.bottom - rect.top;
569
570	if (!ClientToScreen( window->hWnd, (LPPOINT) &rect ))
571	{
572	crWarning("ClientToScreen failed for %p", window->hWnd);
573	w = h = 0;
574	return;
575	}
576	*x = rect.left;
577	*y = rect.top;
578	}
579
580	static void
581	GetWindowTitle( const WindowInfo window, char title )
582	{
583	/* XXX - we don't handle recurseUp */
584	if (window->hWnd)
585	GetWindowText(window->hWnd, title, 100);
586	else
587	title[0] = 0;
588	}
589
590	static void
591	GetCursorPosition(WindowInfo *window, int pos[2])
592	{
593	RECT rect;
594	POINT point;
595	GLint size[2], x, y;
596	unsigned int NativeHeight, NativeWidth, ChromiumHeight, ChromiumWidth;
597	float WidthRatio, HeightRatio;
598	static int DebugFlag = 0;
599
600	// apparently the "window" parameter passed to this
601	// function contains the native window information
602	HWND NATIVEhwnd = window->hWnd;
603
604	if (NATIVEhwnd!=WindowFromDC(window->drawable))
605	{
606	crWarning("Window(%i) DC is no longer valid", window->spuWindow);
607	return;
608	}
609
610	// get the native window's height and width
611	stubGetWindowGeometry(window, &x, &y, &NativeWidth, &NativeHeight);
612
613	// get the spu window's height and width
614	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, window->spuWindow, GL_INT, 2, size);
615	ChromiumWidth = size[0];
616	ChromiumHeight = size[1];
617
618	// get the ratio of the size of the native window to the cr window
619	WidthRatio = (float)ChromiumWidth / (float)NativeWidth;
620	HeightRatio = (float)ChromiumHeight / (float)NativeHeight;
621
622	// output some debug information at the beginning
623	if(DebugFlag)
624	{
625	DebugFlag = 0;
626	crDebug("Native Window Handle = %d", NATIVEhwnd);
627	crDebug("Native Width = %i", NativeWidth);
628	crDebug("Native Height = %i", NativeHeight);
629	crDebug("Chromium Width = %i", ChromiumWidth);
630	crDebug("Chromium Height = %i", ChromiumHeight);
631	}
632
633	if (NATIVEhwnd)
634	{
635	GetClientRect( NATIVEhwnd, &rect );
636	GetCursorPos (&point);
637
638	// make sure these coordinates are relative to the native window,
639	// not the whole desktop
640	ScreenToClient(NATIVEhwnd, &point);
641
642	// calculate the new position of the virtual cursor
643	pos[0] = (int)(point.x * WidthRatio);
644	pos[1] = (int)((NativeHeight - point.y) * HeightRatio);
645	}
646	else
647	{
648	pos[0] = 0;
649	pos[1] = 0;
650	}
651	}
652
653	#elif defined(Darwin)
654
655	extern OSStatus CGSGetScreenRectForWindow( CGSConnectionID cid, CGSWindowID wid, float *outRect );
656	extern OSStatus CGSGetWindowBounds( CGSConnectionID cid, CGSWindowID wid, float *bounds );
657
658	void
659	stubGetWindowGeometry( const WindowInfo window, int x, int y, unsigned int w, unsigned int *h )
660	{
661	float rect[4];
662
663	if( !window \|\|
664	!window->connection \|\|
665	!window->drawable \|\|
666	CGSGetWindowBounds( window->connection, window->drawable, rect ) != noErr )
667	{
668	x = y = 0;
669	w = h = 0;
670	} else {
671	*x = (int) rect[0];
672	*y = (int) rect[1];
673	*w = (int) rect[2];
674	*h = (int) rect[3];
675	}
676	}
677
678
679	static void
680	GetWindowTitle( const WindowInfo window, char title )
681	{
682	/* XXX \todo Darwin window Title */
683	title[0] = '\0';
684	}
685
686
687	static void
688	GetCursorPosition( const WindowInfo *window, int pos[2] )
689	{
690	Point mouse_pos;
691	float window_rect[4];
692
693	GetMouse( &mouse_pos );
694	CGSGetScreenRectForWindow( window->connection, window->drawable, window_rect );
695
696	pos[0] = mouse_pos.h - (int) window_rect[0];
697	pos[1] = (int) window_rect[3] - (mouse_pos.v - (int) window_rect[1]);
698
699	/crDebug( "%i %i", pos[0], pos[1] );/
700	}
701
702	#elif defined(GLX)
703
704	void
705	stubGetWindowGeometry(WindowInfo window, int x, int y, unsigned int w, unsigned int *h)
706	{
707	Window root, child;
708	unsigned int border, depth;
709	Display *dpy;
710
711	dpy = stubGetWindowDisplay(window);
712
713	//@todo: Performing those checks is expensive operation, especially for simple apps with high FPS.
714	// Disabling those triples glxgears fps, thus using xevents instead of per frame polling is much more preferred.
715	//@todo: Check similar on windows guests, though doubtful as there're no XSync like calls on windows.
716	if (window && dpy)
717	{
718	XLOCK(dpy);
719	}
720
721	if (!window
722	\|\| !dpy
723	\|\| !window->drawable
724	\|\| !XGetGeometry(dpy, window->drawable, &root, x, y, w, h, &border, &depth)
725	\|\| !XTranslateCoordinates(dpy, window->drawable, root, 0, 0, x, y, &child))
726	{
727	crWarning("Failed to get windows geometry for %p, try xwininfo", window);
728	x = y = 0;
729	w = h = 0;
730	}
731
732	if (window && dpy)
733	{
734	XUNLOCK(dpy);
735	}
736	}
737
738	static char *
739	GetWindowTitleHelper( Display *dpy, Window window, GLboolean recurseUp )
740	{
741	while (1) {
742	char *name;
743	if (!XFetchName(dpy, window, &name))
744	return NULL;
745	if (name[0]) {
746	return name;
747	}
748	else if (recurseUp) {
749	/* This window has no name, try the parent */
750	Status stat;
751	Window root, parent, *children;
752	unsigned int numChildren;
753	stat = XQueryTree( dpy, window, &root, &parent,
754	&children, &numChildren );
755	if (!stat \|\| window == root)
756	return NULL;
757	if (children)
758	XFree(children);
759	window = parent;
760	}
761	else {
762	XFree(name);
763	return NULL;
764	}
765	}
766	}
767
768	static void
769	GetWindowTitle( const WindowInfo window, char title )
770	{
771	char *t = GetWindowTitleHelper(window->dpy, window->drawable, GL_TRUE);
772	if (t) {
773	crStrcpy(title, t);
774	XFree(t);
775	}
776	else {
777	title[0] = 0;
778	}
779	}
780
781
782	/**
783	*Return current cursor position in local window coords.
784	*/
785	static void
786	GetCursorPosition(WindowInfo *window, int pos[2] )
787	{
788	int rootX, rootY;
789	Window root, child;
790	unsigned int mask;
791	int x, y;
792
793	XLOCK(window->dpy);
794
795	Bool q = XQueryPointer(window->dpy, window->drawable, &root, &child,
796	&rootX, &rootY, &pos[0], &pos[1], &mask);
797	if (q) {
798	unsigned int w, h;
799	stubGetWindowGeometry( window, &x, &y, &w, &h );
800	/* invert Y */
801	pos[1] = (int) h - pos[1] - 1;
802	}
803	else {
804	pos[0] = pos[1] = 0;
805	}
806
807	XUNLOCK(window->dpy);
808	}
809
810	#endif
811
812
813	/**
814	* This function is called by MakeCurrent() and determines whether or
815	* not a new rendering context should be bound to Chromium or the native
816	* OpenGL.
817	* \return GL_FALSE if native OpenGL should be used, or GL_TRUE if Chromium
818	* should be used.
819	*/
820	static GLboolean
821	stubCheckUseChromium( WindowInfo *window )
822	{
823	int x, y;
824	unsigned int w, h;
825
826	/* If the provided window is CHROMIUM, we're clearly intended
827	* to create a CHROMIUM context.
828	*/
829	if (window->type == CHROMIUM)
830	return GL_TRUE;
831
832	if (stub.ignoreFreeglutMenus) {
833	const char *glutMenuTitle = "freeglut menu";
834	char title[1000];
835	GetWindowTitle(window, title);
836	if (crStrcmp(title, glutMenuTitle) == 0) {
837	crDebug("GL faker: Ignoring freeglut menu window");
838	return GL_FALSE;
839	}
840	}
841
842	/* If the user's specified a window count for Chromium, see if
843	* this window satisfies that criterium.
844	*/
845	stub.matchChromiumWindowCounter++;
846	if (stub.matchChromiumWindowCount > 0) {
847	if (stub.matchChromiumWindowCounter != stub.matchChromiumWindowCount) {
848	crDebug("Using native GL, app window doesn't meet match_window_count");
849	return GL_FALSE;
850	}
851	}
852
853	/* If the user's specified a window list to ignore, see if this
854	* window satisfies that criterium.
855	*/
856	if (stub.matchChromiumWindowID) {
857	GLuint i;
858
859	for (i = 0; i <= stub.numIgnoreWindowID; i++) {
860	if (stub.matchChromiumWindowID[i] == stub.matchChromiumWindowCounter) {
861	crDebug("Ignore window ID %d, using native GL", stub.matchChromiumWindowID[i]);
862	return GL_FALSE;
863	}
864	}
865	}
866
867	/* If the user's specified a minimum window size for Chromium, see if
868	* this window satisfies that criterium.
869	*/
870	if (stub.minChromiumWindowWidth > 0 &&
871	stub.minChromiumWindowHeight > 0) {
872	stubGetWindowGeometry( window, &x, &y, &w, &h );
873	if (w >= stub.minChromiumWindowWidth &&
874	h >= stub.minChromiumWindowHeight) {
875
876	/* Check for maximum sized window now too */
877	if (stub.maxChromiumWindowWidth &&
878	stub.maxChromiumWindowHeight) {
879	if (w < stub.maxChromiumWindowWidth &&
880	h < stub.maxChromiumWindowHeight)
881	return GL_TRUE;
882	else
883	return GL_FALSE;
884	}
885
886	return GL_TRUE;
887	}
888	crDebug("Using native GL, app window doesn't meet minimum_window_size");
889	return GL_FALSE;
890	}
891	else if (stub.matchWindowTitle) {
892	/* If the user's specified a window title for Chromium, see if this
893	* window satisfies that criterium.
894	*/
895	GLboolean wildcard = GL_FALSE;
896	char title[1000];
897	char *titlePattern;
898	int len;
899	/* check for leading '' wildcard /
900	if (stub.matchWindowTitle[0] == '*') {
901	titlePattern = crStrdup( stub.matchWindowTitle + 1 );
902	wildcard = GL_TRUE;
903	}
904	else {
905	titlePattern = crStrdup( stub.matchWindowTitle );
906	}
907	/* check for trailing '' wildcard /
908	len = crStrlen(titlePattern);
909	if (len > 0 && titlePattern[len - 1] == '*') {
910	titlePattern[len - 1] = '\0'; /* terminate here */
911	wildcard = GL_TRUE;
912	}
913
914	GetWindowTitle( window, title );
915	if (title[0]) {
916	if (wildcard) {
917	if (crStrstr(title, titlePattern)) {
918	crFree(titlePattern);
919	return GL_TRUE;
920	}
921	}
922	else if (crStrcmp(title, titlePattern) == 0) {
923	crFree(titlePattern);
924	return GL_TRUE;
925	}
926	}
927	crFree(titlePattern);
928	crDebug("Using native GL, app window title doesn't match match_window_title string (\"%s\" != \"%s\")", title, stub.matchWindowTitle);
929	return GL_FALSE;
930	}
931
932	/* Window title and size don't matter */
933	CRASSERT(stub.minChromiumWindowWidth == 0);
934	CRASSERT(stub.minChromiumWindowHeight == 0);
935	CRASSERT(stub.matchWindowTitle == NULL);
936
937	/* User hasn't specified a width/height or window title.
938	* We'll use chromium for this window (and context) if no other is.
939	*/
940
941	return GL_TRUE; /* use Chromium! */
942	}
943
944	static void stubWindowCheckOwnerCB(unsigned long key, void data1, void data2)
945	{
946	WindowInfo pWindow = (WindowInfo ) data1;
947	ContextInfo pCtx = (ContextInfo ) data2;
948
949	if (pWindow->pOwner == pCtx)
950	{
951	#ifdef WINDOWS
952	/* Note: can't use WindowFromDC(context->pOwnWindow->drawable) here
953	because GL context is already released from DC and actual guest window
954	could be destroyed.
955	*/
956	crWindowDestroy((GLint)pWindow->hWnd);
957	#else
958	crWindowDestroy((GLint)pWindow->drawable);
959	#endif
960	}
961	}
962
963	GLboolean
964	stubMakeCurrent( WindowInfo window, ContextInfo context )
965	{
966	GLboolean retVal;
967
968	/*
969	* Get WindowInfo and ContextInfo pointers.
970	*/
971
972	if (!context \|\| !window) {
973	ContextInfo * currentContext = stubGetCurrentContext();
974	if (currentContext)
975	currentContext->currentDrawable = NULL;
976	if (context)
977	context->currentDrawable = NULL;
978	stubSetCurrentContext(NULL);
979	return GL_TRUE; /* OK */
980	}
981
982	#ifdef CHROMIUM_THREADSAFE
983	stubCheckMultithread();
984	#endif
985
986	if (context->type == UNDECIDED) {
987	/* Here's where we really create contexts */
988	#ifdef CHROMIUM_THREADSAFE
989	crLockMutex(&stub.mutex);
990	#endif
991
992	if (stubCheckUseChromium(window)) {
993	/*
994	* Create a Chromium context.
995	*/
996	#if defined(GLX) \|\| defined(DARWIN)
997	GLint spuShareCtx = context->share ? context->share->spuContext : 0;
998	#else
999	GLint spuShareCtx = 0;
1000	#endif
1001
1002	CRASSERT(stub.spu);
1003	CRASSERT(stub.spu->dispatch_table.CreateContext);
1004	context->type = CHROMIUM;
1005
1006	context->spuContext
1007	= stub.spu->dispatch_table.CreateContext( context->dpyName,
1008	context->visBits,
1009	spuShareCtx );
1010	if (window->spuWindow == -1)
1011	{
1012	/crDebug("(1)stubMakeCurrent ctx=%p(%i) window=%p(%i)", context, context->spuContext, window, window->spuWindow);/
1013	window->spuWindow = stub.spu->dispatch_table.WindowCreate( window->dpyName, context->visBits );
1014	#ifdef CR_NEWWINTRACK
1015	window->u32ClientID = stub.spu->dispatch_table.VBoxPackGetInjectID();
1016	#endif
1017	}
1018	}
1019	else {
1020	/*
1021	* Create a native OpenGL context.
1022	*/
1023	if (!InstantiateNativeContext(window, context))
1024	{
1025	#ifdef CHROMIUM_THREADSAFE
1026	crUnlockMutex(&stub.mutex);
1027	#endif
1028	return 0; /* false */
1029	}
1030	context->type = NATIVE;
1031	}
1032
1033	#ifdef CHROMIUM_THREADSAFE
1034	crUnlockMutex(&stub.mutex);
1035	#endif
1036	}
1037
1038
1039	if (context->type == NATIVE) {
1040	/*
1041	* Native OpenGL MakeCurrent().
1042	*/
1043	#ifdef WINDOWS
1044	retVal = (GLboolean) stub.wsInterface.wglMakeCurrent( window->drawable, context->hglrc );
1045	#elif defined(Darwin)
1046	// XXX \todo We need to differentiate between these two..
1047	retVal = ( stub.wsInterface.CGLSetSurface(context->cglc, window->connection, window->drawable, window->surface) == noErr );
1048	retVal = ( stub.wsInterface.CGLSetCurrentContext(context->cglc) == noErr );
1049	#elif defined(GLX)
1050	retVal = (GLboolean) stub.wsInterface.glXMakeCurrent( window->dpy, window->drawable, context->glxContext );
1051	#endif
1052	}
1053	else {
1054	/*
1055	* SPU chain MakeCurrent().
1056	*/
1057	CRASSERT(context->type == CHROMIUM);
1058	CRASSERT(context->spuContext >= 0);
1059
1060	/*if (context->currentDrawable && context->currentDrawable != window)
1061	crDebug("Rebinding context %p to a different window", context);*/
1062
1063	if (window->type == NATIVE) {
1064	crWarning("Can't rebind a chromium context to a native window\n");
1065	retVal = 0;
1066	}
1067	else {
1068	if (window->spuWindow == -1)
1069	{
1070	/crDebug("(2)stubMakeCurrent ctx=%p(%i) window=%p(%i)", context, context->spuContext, window, window->spuWindow);/
1071	window->spuWindow = stub.spu->dispatch_table.WindowCreate( window->dpyName, context->visBits );
1072	#ifdef CR_NEWWINTRACK
1073	window->u32ClientID = stub.spu->dispatch_table.VBoxPackGetInjectID();
1074	#endif
1075	if (context->currentDrawable && context->currentDrawable->type==CHROMIUM
1076	&& context->currentDrawable->pOwner==context)
1077	{
1078	#ifdef WINDOWS
1079	if (context->currentDrawable->hWnd!=WindowFromDC(context->currentDrawable->drawable))
1080	{
1081	crWindowDestroy((GLint)context->currentDrawable->hWnd);
1082	}
1083	#else
1084	Window root;
1085	int x, y;
1086	unsigned int border, depth, w, h;
1087
1088	XLOCK(context->currentDrawable->dpy);
1089	if (!XGetGeometry(context->currentDrawable->dpy, context->currentDrawable->drawable, &root, &x, &y, &w, &h, &border, &depth))
1090	{
1091	crWindowDestroy((GLint)context->currentDrawable->drawable);
1092	}
1093	XUNLOCK(context->currentDrawable->dpy);
1094	#endif
1095
1096	}
1097	}
1098
1099	if (window->spuWindow != (GLint)window->drawable)
1100	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, (GLint) window->drawable, context->spuContext );
1101	else
1102	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, 0, /* native window handle */ context->spuContext );
1103
1104	retVal = 1;
1105	}
1106	}
1107
1108	window->type = context->type;
1109	window->pOwner = context;
1110	context->currentDrawable = window;
1111	stubSetCurrentContext(context);
1112
1113	if (retVal) {
1114	/* Now, if we've transitions from Chromium to native rendering, or
1115	* vice versa, we have to change all the OpenGL entrypoint pointers.
1116	*/
1117	if (context->type == NATIVE) {
1118	/* Switch to native API */
1119	/printf(" Switching to native API\n");/
1120	stubSetDispatch(&stub.nativeDispatch);
1121	}
1122	else if (context->type == CHROMIUM) {
1123	/* Switch to stub (SPU) API */
1124	/printf(" Switching to spu API\n");/
1125	stubSetDispatch(&stub.spuDispatch);
1126	}
1127	else {
1128	/* no API switch needed */
1129	}
1130	}
1131
1132	if (!window->width && window->type == CHROMIUM) {
1133	/* One time window setup */
1134	int x, y;
1135	unsigned int winW, winH;
1136
1137	stubGetWindowGeometry( window, &x, &y, &winW, &winH );
1138
1139	/* If we're not using GLX/WGL (no app window) we'll always get
1140	* a width and height of zero here. In that case, skip the viewport
1141	* call since we're probably using a tilesort SPU with fake_window_dims
1142	* which the tilesort SPU will use for the viewport.
1143	*/
1144	window->width = winW;
1145	window->height = winH;
1146	if (stub.trackWindowSize)
1147	stub.spuDispatch.WindowSize( window->spuWindow, winW, winH );
1148	if (stub.trackWindowPos)
1149	stub.spuDispatch.WindowPosition(window->spuWindow, x, y);
1150	if (winW > 0 && winH > 0)
1151	stub.spu->dispatch_table.Viewport( 0, 0, winW, winH );
1152	#ifdef VBOX_WITH_WDDM
1153	stub.spu->dispatch_table.WindowVisibleRegion(window->spuWindow, 0, NULL);
1154	#endif
1155	}
1156
1157	/* Update window mapping state.
1158	* Basically, this lets us hide render SPU windows which correspond
1159	* to unmapped application windows. Without this, "pertly" (for example)
1160	* opens lots of temporary windows which otherwise clutter the screen.
1161	*/
1162	if (stub.trackWindowVisibility && window->type == CHROMIUM && window->drawable) {
1163	const int mapped = stubIsWindowVisible(window);
1164	if (mapped != window->mapped) {
1165	crDebug("Dispatched: WindowShow(%i, %i)", window->spuWindow, mapped);
1166	stub.spu->dispatch_table.WindowShow(window->spuWindow, mapped);
1167	window->mapped = mapped;
1168	}
1169	}
1170
1171	return retVal;
1172	}
1173
1174	void
1175	stubDestroyContext( unsigned long contextId )
1176	{
1177	ContextInfo *context;
1178
1179	if (!stub.contextTable) {
1180	return;
1181	}
1182
1183	crHashtableLock(stub.contextTable);
1184
1185	context = (ContextInfo *) crHashtableSearch(stub.contextTable, contextId);
1186
1187	CRASSERT(context);
1188
1189	#ifdef CHROMIUM_THREADSAFE
1190	if (stubGetCurrentContext() == context) {
1191	stubSetCurrentContext(NULL);
1192	}
1193
1194	crTSDRefRelease(context);
1195	#else
1196	stubDestroyContextLocked(context);
1197
1198	if (stubGetCurrentContext() == context) {
1199	stubSetCurrentContext(NULL);
1200	}
1201	#endif
1202	crHashtableUnlock(stub.contextTable);
1203	}
1204
1205	void
1206	stubSwapBuffers(WindowInfo *window, GLint flags)
1207	{
1208	if (!window)
1209	return;
1210
1211	/* Determine if this window is being rendered natively or through
1212	* Chromium.
1213	*/
1214
1215	if (window->type == NATIVE) {
1216	/printf("** Swapping native window %d\n", (int) drawable);*/
1217	#ifdef WINDOWS
1218	(void) stub.wsInterface.wglSwapBuffers( window->drawable );
1219	#elif defined(Darwin)
1220	/* ...is this ok? */
1221	/* stub.wsInterface.CGLFlushDrawable( context->cglc ); */
1222	crDebug("stubSwapBuffers: unable to swap (no context!)");
1223	#elif defined(GLX)
1224	stub.wsInterface.glXSwapBuffers( window->dpy, window->drawable );
1225	#endif
1226	}
1227	else if (window->type == CHROMIUM) {
1228	/* Let the SPU do the buffer swap */
1229	/printf("** Swapping chromium window %d\n", (int) drawable);*/
1230	if (stub.appDrawCursor) {
1231	int pos[2];
1232	GetCursorPosition(window, pos);
1233	stub.spu->dispatch_table.ChromiumParametervCR(GL_CURSOR_POSITION_CR, GL_INT, 2, pos);
1234	}
1235	stub.spu->dispatch_table.SwapBuffers( window->spuWindow, flags );
1236	}
1237	else {
1238	crDebug("Calling SwapBuffers on a window we haven't seen before (no-op).");
1239	}
1240	}

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Additions/common/crOpenGL/context.c@ 39570

Download in other formats: