context.c@ 16480

Last change on this file since 16480 was 16480, checked in by vboxsync, 16 years ago
crOpenGL: track visible regions on linux guests + some more exports
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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	/**
36	* This function should be called from MakeCurrent(). It'll detect if
37	* we're in a multi-thread situation, and do the right thing for dispatch.
38	*/
39	#ifdef CHROMIUM_THREADSAFE
40	static void
41	stubCheckMultithread( void )
42	{
43	static unsigned long knownID;
44	static GLboolean firstCall = GL_TRUE;
45
46	if (stub.threadSafe)
47	return; /* nothing new, nothing to do */
48
49	if (firstCall) {
50	knownID = crThreadID();
51	firstCall = GL_FALSE;
52	}
53	else if (knownID != crThreadID()) {
54	/* going thread-safe now! */
55	stub.threadSafe = GL_TRUE;
56	crSPUCopyDispatchTable(&glim, &stubThreadsafeDispatch);
57	}
58	}
59	#endif
60
61
62	/**
63	* Install the given dispatch table as the table used for all gl* calls.
64	*/
65	static void
66	stubSetDispatch( SPUDispatchTable *table )
67	{
68	CRASSERT(table);
69
70	#ifdef CHROMIUM_THREADSAFE
71	/* always set the per-thread dispatch pointer */
72	crSetTSD(&stub.dispatchTSD, (void *) table);
73	if (stub.threadSafe) {
74	/* Do nothing - the thread-safe dispatch functions will call GetTSD()
75	* to get a pointer to the dispatch table, and jump through it.
76	*/
77	}
78	else
79	#endif
80	{
81	/* Single thread mode - just install the caller's dispatch table */
82	/* This conditional is an optimization to try to avoid unnecessary
83	* copying. It seems to work with atlantis, multiwin, etc. but
84	* _could_ be a problem. (Brian)
85	*/
86	if (glim.copy_of != table->copy_of)
87	crSPUCopyDispatchTable(&glim, table);
88	}
89	}
90
91
92	/**
93	* Create a new _Chromium_ window, not GLX, WGL or CGL.
94	* Called by crWindowCreate() only.
95	*/
96	GLint
97	stubNewWindow( const char *dpyName, GLint visBits )
98	{
99	WindowInfo *winInfo;
100	GLint spuWin, size[2];
101
102	spuWin = stub.spu->dispatch_table.WindowCreate( dpyName, visBits );
103	if (spuWin < 0) {
104	return -1;
105	}
106
107	winInfo = (WindowInfo *) crCalloc(sizeof(WindowInfo));
108	if (!winInfo) {
109	stub.spu->dispatch_table.WindowDestroy(spuWin);
110	return -1;
111	}
112
113	winInfo->type = CHROMIUM;
114
115	/* Ask the head SPU for the initial window size */
116	size[0] = size[1] = 0;
117	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, 0, GL_INT, 2, size);
118	if (size[0] == 0 && size[1] == 0) {
119	/* use some reasonable defaults */
120	size[0] = size[1] = 512;
121	}
122	winInfo->width = size[0];
123	winInfo->height = size[1];
124	winInfo->mapped = 1;
125
126	if (!dpyName)
127	dpyName = "";
128
129	crStrncpy(winInfo->dpyName, dpyName, MAX_DPY_NAME);
130	winInfo->dpyName[MAX_DPY_NAME-1] = 0;
131
132	/* Use spuWin as the hash table index and GLX/WGL handle */
133	#ifdef WINDOWS
134	winInfo->drawable = (HDC) spuWin;
135	winInfo->hVisibleRegion = INVALID_HANDLE_VALUE;
136	#elif defined(Darwin)
137	winInfo->drawable = (CGSWindowID) spuWin;
138	#elif defined(GLX)
139	winInfo->drawable = (GLXDrawable) spuWin;
140	winInfo->pVisibleRegions = NULL;
141	#endif
142	winInfo->spuWindow = spuWin;
143
144	crHashtableAdd(stub.windowTable, (unsigned int) spuWin, winInfo);
145
146	return spuWin;
147	}
148
149
150	GLboolean
151	stubIsWindowVisible( const WindowInfo *win )
152	{
153	#if defined(WINDOWS)
154	return GL_TRUE;
155	#elif defined(Darwin)
156	return GL_TRUE;
157	#elif defined(GLX)
158	if (win->dpy) {
159	XWindowAttributes attr;
160	XGetWindowAttributes(win->dpy, win->drawable, &attr);
161	return (attr.map_state != IsUnmapped);
162	}
163	else {
164	/* probably created by crWindowCreate() */
165	return win->mapped;
166	}
167	#endif
168	}
169
170
171	/**
172	* Given a Windows HDC or GLX Drawable, return the corresponding
173	* WindowInfo structure. Create a new one if needed.
174	*/
175	WindowInfo *
176	#ifdef WINDOWS
177	stubGetWindowInfo( HDC drawable )
178	#elif defined(Darwin)
179	stubGetWindowInfo( CGSWindowID drawable )
180	#elif defined(GLX)
181	stubGetWindowInfo( Display *dpy, GLXDrawable drawable )
182	#endif
183	{
184	#ifndef WINDOWS
185	WindowInfo winInfo = (WindowInfo ) crHashtableSearch(stub.windowTable, (unsigned int) drawable);
186	#else
187	WindowInfo *winInfo;
188	HWND hwnd;
189	hwnd = WindowFromDC(drawable);
190
191	if (!hwnd)
192	{
193	crError("Can't get HWND for given HDC(%x)", drawable);
194	}
195
196	winInfo = (WindowInfo *) crHashtableSearch(stub.windowTable, (unsigned int) hwnd);
197	#endif
198	if (!winInfo) {
199	winInfo = (WindowInfo *) crCalloc(sizeof(WindowInfo));
200	if (!winInfo)
201	return NULL;
202	#ifdef GLX
203	crStrncpy(winInfo->dpyName, DisplayString(dpy), MAX_DPY_NAME);
204	winInfo->dpyName[MAX_DPY_NAME-1] = 0;
205	winInfo->dpy = dpy;
206	winInfo->pVisibleRegions = NULL;
207	#elif defined(Darwin)
208	winInfo->connection = _CGSDefaultConnection(); // store our connection as default
209	#elif defined(WINDOWS)
210	winInfo->hVisibleRegion = INVALID_HANDLE_VALUE;
211	winInfo->hWnd = hwnd;
212	#endif
213	winInfo->drawable = drawable;
214	winInfo->type = UNDECIDED;
215	winInfo->spuWindow = -1;
216	winInfo->mapped = -1; /* don't know */
217	#ifndef WINDOWS
218	crHashtableAdd(stub.windowTable, (unsigned int) drawable, winInfo);
219	#else
220	crHashtableAdd(stub.windowTable, (unsigned int) hwnd, winInfo);
221	#endif
222	}
223	return winInfo;
224	}
225
226
227	/**
228	* Allocate a new ContextInfo object, initialize it, put it into the
229	* context hash table. If type==CHROMIUM, call the head SPU's
230	* CreateContext() function too.
231	*/
232	ContextInfo *
233	stubNewContext( const char *dpyName, GLint visBits, ContextType type,
234	unsigned long shareCtx )
235	{
236	GLint spuContext = -1, spuShareCtx = 0;
237	ContextInfo *context;
238
239	if (shareCtx > 0) {
240	/* translate shareCtx to a SPU context ID */
241	context = (ContextInfo *)
242	crHashtableSearch(stub.contextTable, shareCtx);
243	if (context)
244	spuShareCtx = context->spuContext;
245	}
246
247	if (type == CHROMIUM) {
248	spuContext
249	= stub.spu->dispatch_table.CreateContext(dpyName, visBits, spuShareCtx);
250	if (spuContext < 0)
251	return NULL;
252	}
253
254	context = crCalloc(sizeof(ContextInfo));
255	if (!context) {
256	stub.spu->dispatch_table.DestroyContext(spuContext);
257	return NULL;
258	}
259
260	if (!dpyName)
261	dpyName = "";
262
263	context->id = stub.freeContextNumber++;
264	context->type = type;
265	context->spuContext = spuContext;
266	context->visBits = visBits;
267	context->currentDrawable = NULL;
268	context->pOwnWindow = NULL;
269	crStrncpy(context->dpyName, dpyName, MAX_DPY_NAME);
270	context->dpyName[MAX_DPY_NAME-1] = 0;
271
272	#if defined(GLX) \|\| defined(DARWIN)
273	context->share = (ContextInfo *)
274	crHashtableSearch(stub.contextTable, (unsigned long) shareCtx);
275	#endif
276
277	crHashtableAdd(stub.contextTable, context->id, (void *) context);
278
279	return context;
280	}
281
282
283	#ifdef Darwin
284
285	#define SET_ATTR(l,i,a) ( (l)[(i)++] = (a) )
286	#define SET_ATTR_V(l,i,a,v) ( SET_ATTR(l,i,a), SET_ATTR(l,i,v) )
287
288	void stubSetPFA( ContextInfo ctx, CGLPixelFormatAttribute attribs, int size, GLint *num ) {
289	GLuint visual = ctx->visBits;
290	int i = 0;
291
292	CRASSERT(visual & CR_RGB_BIT);
293
294	SET_ATTR_V(attribs, i, kCGLPFAColorSize, 8);
295
296	if( visual & CR_DEPTH_BIT )
297	SET_ATTR_V(attribs, i, kCGLPFADepthSize, 16);
298
299	if( visual & CR_ACCUM_BIT )
300	SET_ATTR_V(attribs, i, kCGLPFAAccumSize, 1);
301
302	if( visual & CR_STENCIL_BIT )
303	SET_ATTR_V(attribs, i, kCGLPFAStencilSize, 1);
304
305	if( visual & CR_ALPHA_BIT )
306	SET_ATTR_V(attribs, i, kCGLPFAAlphaSize, 1);
307
308	if( visual & CR_DOUBLE_BIT )
309	SET_ATTR(attribs, i, kCGLPFADoubleBuffer);
310
311	if( visual & CR_STEREO_BIT )
312	SET_ATTR(attribs, i, kCGLPFAStereo);
313
314	/* SET_ATTR_V(attribs, i, kCGLPFASampleBuffers, 1);
315	SET_ATTR_V(attribs, i, kCGLPFASamples, 0);
316	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, 0); */
317	SET_ATTR(attribs, i, kCGLPFABackingStore);
318	SET_ATTR(attribs, i, kCGLPFAWindow);
319	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, ctx->disp_mask);
320
321	SET_ATTR(attribs, i, 0);
322
323	*num = i;
324	}
325
326	#endif
327
328	/**
329	* This creates a native GLX/WGL context.
330	*/
331	static GLboolean
332	InstantiateNativeContext( WindowInfo window, ContextInfo context )
333	{
334	#ifdef WINDOWS
335	context->hglrc = stub.wsInterface.wglCreateContext( window->drawable );
336	return context->hglrc ? GL_TRUE : GL_FALSE;
337	#elif defined(Darwin)
338	CGLContextObj shareCtx = NULL;
339	CGLPixelFormatObj pix;
340	long npix;
341
342	CGLPixelFormatAttribute attribs[16];
343	GLint ind = 0;
344
345	if( context->share ) {
346	if( context->cglc != context->share->cglc ) {
347	crWarning("CGLCreateContext() is trying to share a non-existant "
348	"CGL context. Setting share context to zero.");
349	shareCtx = 0;
350	}
351	else
352	shareCtx = context->cglc;
353	}
354
355	stubSetPFA( context, attribs, 16, &ind );
356
357	stub.wsInterface.CGLChoosePixelFormat( attribs, &pix, &npix );
358	stub.wsInterface.CGLCreateContext( pix, shareCtx, &context->cglc );
359	if( !context->cglc )
360	crError("InstantiateNativeContext: Couldn't Create the context!");
361
362	stub.wsInterface.CGLDestroyPixelFormat( pix );
363
364	if( context->parambits ) {
365	/* Set the delayed parameters */
366	if( context->parambits & VISBIT_SWAP_RECT )
367	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapRectangle, context->swap_rect );
368
369	if( context->parambits & VISBIT_SWAP_INTERVAL )
370	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapInterval, &(context->swap_interval) );
371
372	if( context->parambits & VISBIT_CLIENT_STORAGE )
373	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPClientStorage, (long*)&(context->client_storage) );
374
375	context->parambits = 0;
376	}
377
378	return context->cglc ? GL_TRUE : GL_FALSE;
379	#elif defined(GLX)
380	GLXContext shareCtx = 0;
381
382	/* sort out context sharing here */
383	if (context->share) {
384	if (context->glxContext != context->share->glxContext) {
385	crWarning("glXCreateContext() is trying to share a non-existant "
386	"GLX context. Setting share context to zero.");
387	shareCtx = 0;
388	}
389	else {
390	shareCtx = context->glxContext;
391	}
392	}
393
394	context->glxContext = stub.wsInterface.glXCreateContext( window->dpy,
395	context->visual, shareCtx, context->direct );
396
397	return context->glxContext ? GL_TRUE : GL_FALSE;
398	#endif
399	}
400
401
402	/**
403	* Utility functions to get window size and titlebar text.
404	*/
405	#ifdef WINDOWS
406
407	void
408	stubGetWindowGeometry( const WindowInfo window, int x, int *y,
409	unsigned int w, unsigned int h )
410	{
411	RECT rect;
412	HWND hwnd;
413
414	if (!window->drawable) {
415	w = h = 0;
416	return;
417	}
418
419	hwnd = WindowFromDC( window->drawable );
420
421	if (!hwnd) {
422	*w = 0;
423	*h = 0;
424	}
425	else {
426	GetClientRect( hwnd, &rect );
427	*w = rect.right - rect.left;
428	*h = rect.bottom - rect.top;
429	ClientToScreen( hwnd, (LPPOINT) &rect );
430	*x = rect.left;
431	*y = rect.top;
432	}
433	}
434
435	static void
436	GetWindowTitle( const WindowInfo window, char title )
437	{
438	HWND hwnd;
439	/* XXX - we don't handle recurseUp */
440	hwnd = WindowFromDC( window->drawable );
441	if (hwnd)
442	GetWindowText(hwnd, title, 100);
443	else
444	title[0] = 0;
445	}
446
447	static void
448	GetCursorPosition( const WindowInfo *window, int pos[2] )
449	{
450	RECT rect;
451	POINT point;
452	GLint size[2], x, y;
453	unsigned int NativeHeight, NativeWidth, ChromiumHeight, ChromiumWidth;
454	float WidthRatio, HeightRatio;
455	static int DebugFlag = 0;
456
457	// apparently the "window" parameter passed to this
458	// function contains the native window information
459	HWND NATIVEhwnd = WindowFromDC( window->drawable );
460
461	// get the native window's height and width
462	stubGetWindowGeometry(window, &x, &y, &NativeWidth, &NativeHeight);
463
464	// get the spu window's height and width
465	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, window->spuWindow, GL_INT, 2, size);
466	ChromiumWidth = size[0];
467	ChromiumHeight = size[1];
468
469	// get the ratio of the size of the native window to the cr window
470	WidthRatio = (float)ChromiumWidth / (float)NativeWidth;
471	HeightRatio = (float)ChromiumHeight / (float)NativeHeight;
472
473	// output some debug information at the beginning
474	if(DebugFlag)
475	{
476	DebugFlag = 0;
477	crDebug("Native Window Handle = %d", NATIVEhwnd);
478	crDebug("Native Width = %i", NativeWidth);
479	crDebug("Native Height = %i", NativeHeight);
480	crDebug("Chromium Width = %i", ChromiumWidth);
481	crDebug("Chromium Height = %i", ChromiumHeight);
482	}
483
484	if (NATIVEhwnd)
485	{
486	GetClientRect( NATIVEhwnd, &rect );
487	GetCursorPos (&point);
488
489	// make sure these coordinates are relative to the native window,
490	// not the whole desktop
491	ScreenToClient(NATIVEhwnd, &point);
492
493	// calculate the new position of the virtual cursor
494	pos[0] = (int)(point.x * WidthRatio);
495	pos[1] = (int)((NativeHeight - point.y) * HeightRatio);
496	}
497	else
498	{
499	pos[0] = 0;
500	pos[1] = 0;
501	}
502	}
503
504	#elif defined(Darwin)
505
506	extern OSStatus CGSGetScreenRectForWindow( CGSConnectionID cid, CGSWindowID wid, float *outRect );
507	extern OSStatus CGSGetWindowBounds( CGSConnectionID cid, CGSWindowID wid, float *bounds );
508
509	void
510	stubGetWindowGeometry( const WindowInfo window, int x, int y, unsigned int w, unsigned int *h )
511	{
512	float rect[4];
513
514	if( !window \|\|
515	!window->connection \|\|
516	!window->drawable \|\|
517	CGSGetWindowBounds( window->connection, window->drawable, rect ) != noErr )
518	{
519	x = y = 0;
520	w = h = 0;
521	} else {
522	*x = (int) rect[0];
523	*y = (int) rect[1];
524	*w = (int) rect[2];
525	*h = (int) rect[3];
526	}
527	}
528
529
530	static void
531	GetWindowTitle( const WindowInfo window, char title )
532	{
533	/* XXX \todo Darwin window Title */
534	title[0] = '\0';
535	}
536
537
538	static void
539	GetCursorPosition( const WindowInfo *window, int pos[2] )
540	{
541	Point mouse_pos;
542	float window_rect[4];
543
544	GetMouse( &mouse_pos );
545	CGSGetScreenRectForWindow( window->connection, window->drawable, window_rect );
546
547	pos[0] = mouse_pos.h - (int) window_rect[0];
548	pos[1] = (int) window_rect[3] - (mouse_pos.v - (int) window_rect[1]);
549
550	/crDebug( "%i %i", pos[0], pos[1] );/
551	}
552
553	#elif defined(GLX)
554
555	void
556	stubGetWindowGeometry( const WindowInfo window, int x, int *y,
557	unsigned int w, unsigned int h )
558	{
559	Window root, child;
560	unsigned int border, depth;
561
562	//@todo: Performing those checks is expensive operation, especially for simple apps with high FPS.
563	// Disabling those tripples glxgears fps, thus using xevens instead of per frame polling is much more preffered.
564	//@todo: Check similiar on windows guests, though doubtfull as there're no XSync like calls on windows.
565	if (!window
566	\|\| !window->dpy
567	\|\| !window->drawable
568	\|\| !XGetGeometry(window->dpy, window->drawable, &root,
569	x, y, w, h, &border, &depth)
570	\|\| !XTranslateCoordinates(window->dpy, window->drawable, root,
571	0, 0, x, y, &child))
572	{
573	crWarning("Failed to get windows geometry for %x, try xwininfo", (int) window);
574	x = y = 0;
575	w = h = 0;
576	}
577	}
578
579	static char *
580	GetWindowTitleHelper( Display *dpy, Window window, GLboolean recurseUp )
581	{
582	while (1) {
583	char *name;
584	if (!XFetchName(dpy, window, &name))
585	return NULL;
586	if (name[0]) {
587	return name;
588	}
589	else if (recurseUp) {
590	/* This window has no name, try the parent */
591	Status stat;
592	Window root, parent, *children;
593	unsigned int numChildren;
594	stat = XQueryTree( dpy, window, &root, &parent,
595	&children, &numChildren );
596	if (!stat \|\| window == root)
597	return NULL;
598	if (children)
599	XFree(children);
600	window = parent;
601	}
602	else {
603	XFree(name);
604	return NULL;
605	}
606	}
607	}
608
609	static void
610	GetWindowTitle( const WindowInfo window, char title )
611	{
612	char *t = GetWindowTitleHelper(window->dpy, window->drawable, GL_TRUE);
613	if (t) {
614	crStrcpy(title, t);
615	XFree(t);
616	}
617	else {
618	title[0] = 0;
619	}
620	}
621
622
623	/**
624	*Return current cursor position in local window coords.
625	*/
626	static void
627	GetCursorPosition( const WindowInfo *window, int pos[2] )
628	{
629	int rootX, rootY;
630	Window root, child;
631	unsigned int mask;
632	int x, y;
633	Bool q = XQueryPointer(window->dpy, window->drawable, &root, &child,
634	&rootX, &rootY, &pos[0], &pos[1], &mask);
635	if (q) {
636	unsigned int w, h;
637	stubGetWindowGeometry( window, &x, &y, &w, &h );
638	/* invert Y */
639	pos[1] = (int) h - pos[1] - 1;
640	}
641	else {
642	pos[0] = pos[1] = 0;
643	}
644	}
645
646	#endif
647
648
649	/**
650	* This function is called by MakeCurrent() and determines whether or
651	* not a new rendering context should be bound to Chromium or the native
652	* OpenGL.
653	* \return GL_FALSE if native OpenGL should be used, or GL_TRUE if Chromium
654	* should be used.
655	*/
656	static GLboolean
657	stubCheckUseChromium( WindowInfo *window )
658	{
659	int x, y;
660	unsigned int w, h;
661
662	/* If the provided window is CHROMIUM, we're clearly intended
663	* to create a CHROMIUM context.
664	*/
665	if (window->type == CHROMIUM)
666	return GL_TRUE;
667
668	if (stub.ignoreFreeglutMenus) {
669	const char *glutMenuTitle = "freeglut menu";
670	char title[1000];
671	GetWindowTitle(window, title);
672	if (crStrcmp(title, glutMenuTitle) == 0) {
673	crDebug("GL faker: Ignoring freeglut menu window");
674	return GL_FALSE;
675	}
676	}
677
678	/* If the user's specified a window count for Chromium, see if
679	* this window satisfies that criterium.
680	*/
681	stub.matchChromiumWindowCounter++;
682	if (stub.matchChromiumWindowCount > 0) {
683	if (stub.matchChromiumWindowCounter != stub.matchChromiumWindowCount) {
684	crDebug("Using native GL, app window doesn't meet match_window_count");
685	return GL_FALSE;
686	}
687	}
688
689	/* If the user's specified a window list to ignore, see if this
690	* window satisfies that criterium.
691	*/
692	if (stub.matchChromiumWindowID) {
693	GLuint i;
694
695	for (i = 0; i <= stub.numIgnoreWindowID; i++) {
696	if (stub.matchChromiumWindowID[i] == stub.matchChromiumWindowCounter) {
697	crDebug("Ignore window ID %d, using native GL", stub.matchChromiumWindowID[i]);
698	return GL_FALSE;
699	}
700	}
701	}
702
703	/* If the user's specified a minimum window size for Chromium, see if
704	* this window satisfies that criterium.
705	*/
706	if (stub.minChromiumWindowWidth > 0 &&
707	stub.minChromiumWindowHeight > 0) {
708	stubGetWindowGeometry( window, &x, &y, &w, &h );
709	if (w >= stub.minChromiumWindowWidth &&
710	h >= stub.minChromiumWindowHeight) {
711
712	/* Check for maximum sized window now too */
713	if (stub.maxChromiumWindowWidth &&
714	stub.maxChromiumWindowHeight) {
715	if (w < stub.maxChromiumWindowWidth &&
716	h < stub.maxChromiumWindowHeight)
717	return GL_TRUE;
718	else
719	return GL_FALSE;
720	}
721
722	return GL_TRUE;
723	}
724	crDebug("Using native GL, app window doesn't meet minimum_window_size");
725	return GL_FALSE;
726	}
727	else if (stub.matchWindowTitle) {
728	/* If the user's specified a window title for Chromium, see if this
729	* window satisfies that criterium.
730	*/
731	GLboolean wildcard = GL_FALSE;
732	char title[1000];
733	char *titlePattern;
734	int len;
735	/* check for leading '' wildcard /
736	if (stub.matchWindowTitle[0] == '*') {
737	titlePattern = crStrdup( stub.matchWindowTitle + 1 );
738	wildcard = GL_TRUE;
739	}
740	else {
741	titlePattern = crStrdup( stub.matchWindowTitle );
742	}
743	/* check for trailing '' wildcard /
744	len = crStrlen(titlePattern);
745	if (len > 0 && titlePattern[len - 1] == '*') {
746	titlePattern[len - 1] = '\0'; /* terminate here */
747	wildcard = GL_TRUE;
748	}
749
750	GetWindowTitle( window, title );
751	if (title[0]) {
752	if (wildcard) {
753	if (crStrstr(title, titlePattern)) {
754	crFree(titlePattern);
755	return GL_TRUE;
756	}
757	}
758	else if (crStrcmp(title, titlePattern) == 0) {
759	crFree(titlePattern);
760	return GL_TRUE;
761	}
762	}
763	crFree(titlePattern);
764	crDebug("Using native GL, app window title doesn't match match_window_title string (\"%s\" != \"%s\")", title, stub.matchWindowTitle);
765	return GL_FALSE;
766	}
767
768	/* Window title and size don't matter */
769	CRASSERT(stub.minChromiumWindowWidth == 0);
770	CRASSERT(stub.minChromiumWindowHeight == 0);
771	CRASSERT(stub.matchWindowTitle == NULL);
772
773	/* User hasn't specified a width/height or window title.
774	* We'll use chromium for this window (and context) if no other is.
775	*/
776
777	return GL_TRUE; /* use Chromium! */
778	}
779
780
781	GLboolean
782	stubMakeCurrent( WindowInfo window, ContextInfo context )
783	{
784	GLboolean retVal;
785
786	/*
787	* Get WindowInfo and ContextInfo pointers.
788	*/
789
790	if (!context \|\| !window) {
791	if (stub.currentContext)
792	stub.currentContext->currentDrawable = NULL;
793	if (context)
794	context->currentDrawable = NULL;
795	stub.currentContext = NULL;
796	return GL_TRUE; /* OK */
797	}
798
799	#ifdef CHROMIUM_THREADSAFE
800	stubCheckMultithread();
801	#endif
802
803	if (context->type == UNDECIDED) {
804	/* Here's where we really create contexts */
805	#ifdef CHROMIUM_THREADSAFE
806	crLockMutex(&stub.mutex);
807	#endif
808
809	if (stubCheckUseChromium(window)) {
810	/*
811	* Create a Chromium context.
812	*/
813	#if defined(GLX) \|\| defined(DARWIN)
814	GLint spuShareCtx = context->share ? context->share->spuContext : 0;
815	#else
816	GLint spuShareCtx = 0;
817	#endif
818
819	CRASSERT(stub.spu);
820	CRASSERT(stub.spu->dispatch_table.CreateContext);
821	context->type = CHROMIUM;
822
823	context->spuContext
824	= stub.spu->dispatch_table.CreateContext( context->dpyName,
825	context->visBits,
826	spuShareCtx );
827	if (window->spuWindow == -1)
828	{
829	window->spuWindow = stub.spu->dispatch_table.WindowCreate( window->dpyName, context->visBits );
830	CRASSERT(!context->pOwnWindow);
831	context->pOwnWindow = window;
832	}
833	}
834	else {
835	/*
836	* Create a native OpenGL context.
837	*/
838	if (!InstantiateNativeContext(window, context))
839	{
840	#ifdef CHROMIUM_THREADSAFE
841	crUnlockMutex(&stub.mutex);
842	#endif
843	return 0; /* false */
844	}
845	context->type = NATIVE;
846	}
847
848	#ifdef CHROMIUM_THREADSAFE
849	crUnlockMutex(&stub.mutex);
850	#endif
851	}
852
853
854	if (context->type == NATIVE) {
855	/*
856	* Native OpenGL MakeCurrent().
857	*/
858	#ifdef WINDOWS
859	retVal = (GLboolean) stub.wsInterface.wglMakeCurrent( window->drawable, context->hglrc );
860	#elif defined(Darwin)
861	// XXX \todo We need to differentiate between these two..
862	retVal = ( stub.wsInterface.CGLSetSurface(context->cglc, window->connection, window->drawable, window->surface) == noErr );
863	retVal = ( stub.wsInterface.CGLSetCurrentContext(context->cglc) == noErr );
864	#elif defined(GLX)
865	retVal = (GLboolean) stub.wsInterface.glXMakeCurrent( window->dpy, window->drawable, context->glxContext );
866	#endif
867	}
868	else {
869	/*
870	* SPU chain MakeCurrent().
871	*/
872	CRASSERT(context->type == CHROMIUM);
873	CRASSERT(context->spuContext >= 0);
874
875	if (context->currentDrawable && context->currentDrawable != window)
876	crWarning("Rebinding context %p to a different window", context);
877
878	if (window->type == NATIVE) {
879	crWarning("Can't rebind a chromium context to a native window\n");
880	retVal = 0;
881	}
882	else {
883	if (window->spuWindow == -1)
884	{
885	window->spuWindow = stub.spu->dispatch_table.WindowCreate( window->dpyName, context->visBits );
886	CRASSERT(!context->pOwnWindow);
887	context->pOwnWindow = window;
888	}
889
890	if (window->spuWindow != (GLint)window->drawable)
891	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, (GLint) window->drawable, context->spuContext );
892	else
893	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, 0, /* native window handle */ context->spuContext );
894
895	retVal = 1;
896	}
897	}
898
899	window->type = context->type;
900	context->currentDrawable = window;
901	stub.currentContext = context;
902
903	if (retVal) {
904	/* Now, if we've transitions from Chromium to native rendering, or
905	* vice versa, we have to change all the OpenGL entrypoint pointers.
906	*/
907	if (context->type == NATIVE) {
908	/* Switch to native API */
909	/printf(" Switching to native API\n");/
910	stubSetDispatch(&stub.nativeDispatch);
911	}
912	else if (context->type == CHROMIUM) {
913	/* Switch to stub (SPU) API */
914	/printf(" Switching to spu API\n");/
915	stubSetDispatch(&stub.spuDispatch);
916	}
917	else {
918	/* no API switch needed */
919	}
920	}
921
922	if (!window->width && window->type == CHROMIUM) {
923	/* One time window setup */
924	int x, y;
925	unsigned int winW, winH;
926
927	stubGetWindowGeometry( window, &x, &y, &winW, &winH );
928
929	/* If we're not using GLX/WGL (no app window) we'll always get
930	* a width and height of zero here. In that case, skip the viewport
931	* call since we're probably using a tilesort SPU with fake_window_dims
932	* which the tilesort SPU will use for the viewport.
933	*/
934	window->width = winW;
935	window->height = winH;
936	if (stub.trackWindowSize)
937	stub.spuDispatch.WindowSize( window->spuWindow, winW, winH );
938	if (winW > 0 && winH > 0)
939	stub.spu->dispatch_table.Viewport( 0, 0, winW, winH );
940	}
941
942	/* Update window mapping state.
943	* Basically, this lets us hide render SPU windows which correspond
944	* to unmapped application windows. Without this, perfly (for example)
945	* opens lots of temporary windows which otherwise clutter the screen.
946	*/
947	if (stub.trackWindowVisibility && window->type == CHROMIUM && window->drawable) {
948	const int mapped = stubIsWindowVisible(window);
949	if (mapped != window->mapped) {
950	crDebug("Dispatched: WindowShow(%i, %i)", window->spuWindow, mapped);
951	stub.spu->dispatch_table.WindowShow(window->spuWindow, mapped);
952	window->mapped = mapped;
953	}
954	}
955
956	return retVal;
957	}
958
959
960
961	void
962	stubDestroyContext( unsigned long contextId )
963	{
964	ContextInfo *context;
965
966	if (!stub.contextTable) {
967	return;
968	}
969	context = (ContextInfo *) crHashtableSearch(stub.contextTable, contextId);
970
971	CRASSERT(context);
972
973	if (context->type == NATIVE) {
974	#ifdef WINDOWS
975	stub.wsInterface.wglDeleteContext( context->hglrc );
976	#elif defined(Darwin)
977	stub.wsInterface.CGLDestroyContext( context->cglc );
978	#elif defined(GLX)
979	stub.wsInterface.glXDestroyContext( context->dpy, context->glxContext );
980	#endif
981	}
982	else if (context->type == CHROMIUM) {
983	/* Have pack SPU or tilesort SPU, etc. destroy the context */
984	CRASSERT(context->spuContext >= 0);
985	stub.spu->dispatch_table.DestroyContext( context->spuContext );
986	if (context->pOwnWindow)
987	{
988	/* Note: can't use WindowFromDC(context->pOwnWindow->drawable) here
989	because GL context is already released from DC and actual guest window
990	could be destroyed.
991	*/
992	#ifdef WINDOWS
993	crWindowDestroy((GLint)context->pOwnWindow->hWnd);
994	#else
995	crWindowDestroy((GLint)context->pOwnWindow->drawable);
996	#endif
997	}
998	}
999
1000	if (stub.currentContext == context) {
1001	stub.currentContext = NULL;
1002	}
1003
1004	crMemZero(context, sizeof(ContextInfo)); /* just to be safe */
1005	crHashtableDelete(stub.contextTable, contextId, crFree);
1006	}
1007
1008
1009	void
1010	stubSwapBuffers( const WindowInfo *window, GLint flags )
1011	{
1012	if (!window)
1013	return;
1014
1015	/* Determine if this window is being rendered natively or through
1016	* Chromium.
1017	*/
1018
1019	if (window->type == NATIVE) {
1020	/printf("** Swapping native window %d\n", (int) drawable);*/
1021	#ifdef WINDOWS
1022	(void) stub.wsInterface.wglSwapBuffers( window->drawable );
1023	#elif defined(Darwin)
1024	/* ...is this ok? */
1025	/* stub.wsInterface.CGLFlushDrawable( context->cglc ); */
1026	crDebug("stubSwapBuffers: unable to swap (no context!)");
1027	#elif defined(GLX)
1028	stub.wsInterface.glXSwapBuffers( window->dpy, window->drawable );
1029	#endif
1030	}
1031	else if (window->type == CHROMIUM) {
1032	/* Let the SPU do the buffer swap */
1033	/printf("** Swapping chromium window %d\n", (int) drawable);*/
1034	if (stub.appDrawCursor) {
1035	int pos[2];
1036	GetCursorPosition(window, pos);
1037	stub.spu->dispatch_table.ChromiumParametervCR(GL_CURSOR_POSITION_CR, GL_INT, 2, pos);
1038	}
1039	stub.spu->dispatch_table.SwapBuffers( window->spuWindow, flags );
1040	}
1041	else {
1042	crDebug("Calling SwapBuffers on a window we haven't seen before (no-op).");
1043	}
1044	}

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source: vbox/trunk/src/VBox/Additions/WINNT/Graphics/crOpenGL/context.c@ 16480

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