context.c@ 16241

Last change on this file since 16241 was 15532, checked in by vboxsync, 16 years ago
crOpenGL: export to OSE
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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	#endif
141	winInfo->spuWindow = spuWin;
142
143	crHashtableAdd(stub.windowTable, (unsigned int) spuWin, winInfo);
144
145	return spuWin;
146	}
147
148
149	GLboolean
150	stubIsWindowVisible( const WindowInfo *win )
151	{
152	#if defined(WINDOWS)
153	return GL_TRUE;
154	#elif defined(Darwin)
155	return GL_TRUE;
156	#elif defined(GLX)
157	if (win->dpy) {
158	XWindowAttributes attr;
159	XGetWindowAttributes(win->dpy, win->drawable, &attr);
160	return (attr.map_state != IsUnmapped);
161	}
162	else {
163	/* probably created by crWindowCreate() */
164	return win->mapped;
165	}
166	#endif
167	}
168
169
170	/**
171	* Given a Windows HDC or GLX Drawable, return the corresponding
172	* WindowInfo structure. Create a new one if needed.
173	*/
174	WindowInfo *
175	#ifdef WINDOWS
176	stubGetWindowInfo( HDC drawable )
177	#elif defined(Darwin)
178	stubGetWindowInfo( CGSWindowID drawable )
179	#elif defined(GLX)
180	stubGetWindowInfo( Display *dpy, GLXDrawable drawable )
181	#endif
182	{
183	#ifndef WINDOWS
184	WindowInfo winInfo = (WindowInfo ) crHashtableSearch(stub.windowTable, (unsigned int) drawable);
185	#else
186	WindowInfo *winInfo;
187	HWND hwnd;
188	hwnd = WindowFromDC(drawable);
189
190	if (!hwnd)
191	{
192	crError("Can't get HWND for given HDC(%x)", drawable);
193	}
194
195	winInfo = (WindowInfo *) crHashtableSearch(stub.windowTable, (unsigned int) hwnd);
196	#endif
197	if (!winInfo) {
198	winInfo = (WindowInfo *) crCalloc(sizeof(WindowInfo));
199	if (!winInfo)
200	return NULL;
201	#ifdef GLX
202	crStrncpy(winInfo->dpyName, DisplayString(dpy), MAX_DPY_NAME);
203	winInfo->dpyName[MAX_DPY_NAME-1] = 0;
204	winInfo->dpy = dpy;
205	#elif defined(Darwin)
206	winInfo->connection = _CGSDefaultConnection(); // store our connection as default
207	#elif defined(WINDOWS)
208	winInfo->hVisibleRegion = INVALID_HANDLE_VALUE;
209	winInfo->hWnd = hwnd;
210	#endif
211	winInfo->drawable = drawable;
212	winInfo->type = UNDECIDED;
213	winInfo->spuWindow = -1;
214	winInfo->mapped = -1; /* don't know */
215	#ifndef WINDOWS
216	crHashtableAdd(stub.windowTable, (unsigned int) drawable, winInfo);
217	#else
218	crHashtableAdd(stub.windowTable, (unsigned int) hwnd, winInfo);
219	#endif
220	}
221	return winInfo;
222	}
223
224
225	/**
226	* Allocate a new ContextInfo object, initialize it, put it into the
227	* context hash table. If type==CHROMIUM, call the head SPU's
228	* CreateContext() function too.
229	*/
230	ContextInfo *
231	stubNewContext( const char *dpyName, GLint visBits, ContextType type,
232	unsigned long shareCtx )
233	{
234	GLint spuContext = -1, spuShareCtx = 0;
235	ContextInfo *context;
236
237	if (shareCtx > 0) {
238	/* translate shareCtx to a SPU context ID */
239	context = (ContextInfo *)
240	crHashtableSearch(stub.contextTable, shareCtx);
241	if (context)
242	spuShareCtx = context->spuContext;
243	}
244
245	if (type == CHROMIUM) {
246	spuContext
247	= stub.spu->dispatch_table.CreateContext(dpyName, visBits, spuShareCtx);
248	if (spuContext < 0)
249	return NULL;
250	}
251
252	context = crCalloc(sizeof(ContextInfo));
253	if (!context) {
254	stub.spu->dispatch_table.DestroyContext(spuContext);
255	return NULL;
256	}
257
258	if (!dpyName)
259	dpyName = "";
260
261	context->id = stub.freeContextNumber++;
262	context->type = type;
263	context->spuContext = spuContext;
264	context->visBits = visBits;
265	context->currentDrawable = NULL;
266	context->pOwnWindow = NULL;
267	crStrncpy(context->dpyName, dpyName, MAX_DPY_NAME);
268	context->dpyName[MAX_DPY_NAME-1] = 0;
269
270	#if defined(GLX) \|\| defined(DARWIN)
271	context->share = (ContextInfo *)
272	crHashtableSearch(stub.contextTable, (unsigned long) shareCtx);
273	#endif
274
275	crHashtableAdd(stub.contextTable, context->id, (void *) context);
276
277	return context;
278	}
279
280
281	#ifdef Darwin
282
283	#define SET_ATTR(l,i,a) ( (l)[(i)++] = (a) )
284	#define SET_ATTR_V(l,i,a,v) ( SET_ATTR(l,i,a), SET_ATTR(l,i,v) )
285
286	void stubSetPFA( ContextInfo ctx, CGLPixelFormatAttribute attribs, int size, GLint *num ) {
287	GLuint visual = ctx->visBits;
288	int i = 0;
289
290	CRASSERT(visual & CR_RGB_BIT);
291
292	SET_ATTR_V(attribs, i, kCGLPFAColorSize, 8);
293
294	if( visual & CR_DEPTH_BIT )
295	SET_ATTR_V(attribs, i, kCGLPFADepthSize, 16);
296
297	if( visual & CR_ACCUM_BIT )
298	SET_ATTR_V(attribs, i, kCGLPFAAccumSize, 1);
299
300	if( visual & CR_STENCIL_BIT )
301	SET_ATTR_V(attribs, i, kCGLPFAStencilSize, 1);
302
303	if( visual & CR_ALPHA_BIT )
304	SET_ATTR_V(attribs, i, kCGLPFAAlphaSize, 1);
305
306	if( visual & CR_DOUBLE_BIT )
307	SET_ATTR(attribs, i, kCGLPFADoubleBuffer);
308
309	if( visual & CR_STEREO_BIT )
310	SET_ATTR(attribs, i, kCGLPFAStereo);
311
312	/* SET_ATTR_V(attribs, i, kCGLPFASampleBuffers, 1);
313	SET_ATTR_V(attribs, i, kCGLPFASamples, 0);
314	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, 0); */
315	SET_ATTR(attribs, i, kCGLPFABackingStore);
316	SET_ATTR(attribs, i, kCGLPFAWindow);
317	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, ctx->disp_mask);
318
319	SET_ATTR(attribs, i, 0);
320
321	*num = i;
322	}
323
324	#endif
325
326	/**
327	* This creates a native GLX/WGL context.
328	*/
329	static GLboolean
330	InstantiateNativeContext( WindowInfo window, ContextInfo context )
331	{
332	#ifdef WINDOWS
333	context->hglrc = stub.wsInterface.wglCreateContext( window->drawable );
334	return context->hglrc ? GL_TRUE : GL_FALSE;
335	#elif defined(Darwin)
336	CGLContextObj shareCtx = NULL;
337	CGLPixelFormatObj pix;
338	long npix;
339
340	CGLPixelFormatAttribute attribs[16];
341	GLint ind = 0;
342
343	if( context->share ) {
344	if( context->cglc != context->share->cglc ) {
345	crWarning("CGLCreateContext() is trying to share a non-existant "
346	"CGL context. Setting share context to zero.");
347	shareCtx = 0;
348	}
349	else
350	shareCtx = context->cglc;
351	}
352
353	stubSetPFA( context, attribs, 16, &ind );
354
355	stub.wsInterface.CGLChoosePixelFormat( attribs, &pix, &npix );
356	stub.wsInterface.CGLCreateContext( pix, shareCtx, &context->cglc );
357	if( !context->cglc )
358	crError("InstantiateNativeContext: Couldn't Create the context!");
359
360	stub.wsInterface.CGLDestroyPixelFormat( pix );
361
362	if( context->parambits ) {
363	/* Set the delayed parameters */
364	if( context->parambits & VISBIT_SWAP_RECT )
365	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapRectangle, context->swap_rect );
366
367	if( context->parambits & VISBIT_SWAP_INTERVAL )
368	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapInterval, &(context->swap_interval) );
369
370	if( context->parambits & VISBIT_CLIENT_STORAGE )
371	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPClientStorage, (long*)&(context->client_storage) );
372
373	context->parambits = 0;
374	}
375
376	return context->cglc ? GL_TRUE : GL_FALSE;
377	#elif defined(GLX)
378	GLXContext shareCtx = 0;
379
380	/* sort out context sharing here */
381	if (context->share) {
382	if (context->glxContext != context->share->glxContext) {
383	crWarning("glXCreateContext() is trying to share a non-existant "
384	"GLX context. Setting share context to zero.");
385	shareCtx = 0;
386	}
387	else {
388	shareCtx = context->glxContext;
389	}
390	}
391
392	context->glxContext = stub.wsInterface.glXCreateContext( window->dpy,
393	context->visual, shareCtx, context->direct );
394
395	return context->glxContext ? GL_TRUE : GL_FALSE;
396	#endif
397	}
398
399
400	/**
401	* Utility functions to get window size and titlebar text.
402	*/
403	#ifdef WINDOWS
404
405	void
406	stubGetWindowGeometry( const WindowInfo window, int x, int *y,
407	unsigned int w, unsigned int h )
408	{
409	RECT rect;
410	HWND hwnd;
411
412	if (!window->drawable) {
413	w = h = 0;
414	return;
415	}
416
417	hwnd = WindowFromDC( window->drawable );
418
419	if (!hwnd) {
420	*w = 0;
421	*h = 0;
422	}
423	else {
424	GetClientRect( hwnd, &rect );
425	*w = rect.right - rect.left;
426	*h = rect.bottom - rect.top;
427	ClientToScreen( hwnd, (LPPOINT) &rect );
428	*x = rect.left;
429	*y = rect.top;
430	}
431	}
432
433	static void
434	GetWindowTitle( const WindowInfo window, char title )
435	{
436	HWND hwnd;
437	/* XXX - we don't handle recurseUp */
438	hwnd = WindowFromDC( window->drawable );
439	if (hwnd)
440	GetWindowText(hwnd, title, 100);
441	else
442	title[0] = 0;
443	}
444
445	static void
446	GetCursorPosition( const WindowInfo *window, int pos[2] )
447	{
448	RECT rect;
449	POINT point;
450	GLint size[2], x, y;
451	unsigned int NativeHeight, NativeWidth, ChromiumHeight, ChromiumWidth;
452	float WidthRatio, HeightRatio;
453	static int DebugFlag = 0;
454
455	// apparently the "window" parameter passed to this
456	// function contains the native window information
457	HWND NATIVEhwnd = WindowFromDC( window->drawable );
458
459	// get the native window's height and width
460	stubGetWindowGeometry(window, &x, &y, &NativeWidth, &NativeHeight);
461
462	// get the spu window's height and width
463	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, window->spuWindow, GL_INT, 2, size);
464	ChromiumWidth = size[0];
465	ChromiumHeight = size[1];
466
467	// get the ratio of the size of the native window to the cr window
468	WidthRatio = (float)ChromiumWidth / (float)NativeWidth;
469	HeightRatio = (float)ChromiumHeight / (float)NativeHeight;
470
471	// output some debug information at the beginning
472	if(DebugFlag)
473	{
474	DebugFlag = 0;
475	crDebug("Native Window Handle = %d", NATIVEhwnd);
476	crDebug("Native Width = %i", NativeWidth);
477	crDebug("Native Height = %i", NativeHeight);
478	crDebug("Chromium Width = %i", ChromiumWidth);
479	crDebug("Chromium Height = %i", ChromiumHeight);
480	}
481
482	if (NATIVEhwnd)
483	{
484	GetClientRect( NATIVEhwnd, &rect );
485	GetCursorPos (&point);
486
487	// make sure these coordinates are relative to the native window,
488	// not the whole desktop
489	ScreenToClient(NATIVEhwnd, &point);
490
491	// calculate the new position of the virtual cursor
492	pos[0] = (int)(point.x * WidthRatio);
493	pos[1] = (int)((NativeHeight - point.y) * HeightRatio);
494	}
495	else
496	{
497	pos[0] = 0;
498	pos[1] = 0;
499	}
500	}
501
502	#elif defined(Darwin)
503
504	extern OSStatus CGSGetScreenRectForWindow( CGSConnectionID cid, CGSWindowID wid, float *outRect );
505	extern OSStatus CGSGetWindowBounds( CGSConnectionID cid, CGSWindowID wid, float *bounds );
506
507	void
508	stubGetWindowGeometry( const WindowInfo window, int x, int y, unsigned int w, unsigned int *h )
509	{
510	float rect[4];
511
512	if( !window \|\|
513	!window->connection \|\|
514	!window->drawable \|\|
515	CGSGetWindowBounds( window->connection, window->drawable, rect ) != noErr )
516	{
517	x = y = 0;
518	w = h = 0;
519	} else {
520	*x = (int) rect[0];
521	*y = (int) rect[1];
522	*w = (int) rect[2];
523	*h = (int) rect[3];
524	}
525	}
526
527
528	static void
529	GetWindowTitle( const WindowInfo window, char title )
530	{
531	/* XXX \todo Darwin window Title */
532	title[0] = '\0';
533	}
534
535
536	static void
537	GetCursorPosition( const WindowInfo *window, int pos[2] )
538	{
539	Point mouse_pos;
540	float window_rect[4];
541
542	GetMouse( &mouse_pos );
543	CGSGetScreenRectForWindow( window->connection, window->drawable, window_rect );
544
545	pos[0] = mouse_pos.h - (int) window_rect[0];
546	pos[1] = (int) window_rect[3] - (mouse_pos.v - (int) window_rect[1]);
547
548	/crDebug( "%i %i", pos[0], pos[1] );/
549	}
550
551	#elif defined(GLX)
552
553	void
554	stubGetWindowGeometry( const WindowInfo window, int x, int *y,
555	unsigned int w, unsigned int h )
556	{
557	Window root, child;
558	unsigned int border, depth;
559	if (!window
560	\|\| !window->dpy
561	\|\| !window->drawable
562	\|\| !XGetGeometry(window->dpy, window->drawable, &root,
563	x, y, w, h, &border, &depth)
564	\|\| !XTranslateCoordinates(window->dpy, window->drawable, root,
565	x, y, x, y, &child)) {
566	x = y = 0;
567	w = h = 0;
568	}
569	}
570
571	static char *
572	GetWindowTitleHelper( Display *dpy, Window window, GLboolean recurseUp )
573	{
574	while (1) {
575	char *name;
576	if (!XFetchName(dpy, window, &name))
577	return NULL;
578	if (name[0]) {
579	return name;
580	}
581	else if (recurseUp) {
582	/* This window has no name, try the parent */
583	Status stat;
584	Window root, parent, *children;
585	unsigned int numChildren;
586	stat = XQueryTree( dpy, window, &root, &parent,
587	&children, &numChildren );
588	if (!stat \|\| window == root)
589	return NULL;
590	if (children)
591	XFree(children);
592	window = parent;
593	}
594	else {
595	XFree(name);
596	return NULL;
597	}
598	}
599	}
600
601	static void
602	GetWindowTitle( const WindowInfo window, char title )
603	{
604	char *t = GetWindowTitleHelper(window->dpy, window->drawable, GL_TRUE);
605	if (t) {
606	crStrcpy(title, t);
607	XFree(t);
608	}
609	else {
610	title[0] = 0;
611	}
612	}
613
614
615	/**
616	*Return current cursor position in local window coords.
617	*/
618	static void
619	GetCursorPosition( const WindowInfo *window, int pos[2] )
620	{
621	int rootX, rootY;
622	Window root, child;
623	unsigned int mask;
624	int x, y;
625	Bool q = XQueryPointer(window->dpy, window->drawable, &root, &child,
626	&rootX, &rootY, &pos[0], &pos[1], &mask);
627	if (q) {
628	unsigned int w, h;
629	stubGetWindowGeometry( window, &x, &y, &w, &h );
630	/* invert Y */
631	pos[1] = (int) h - pos[1] - 1;
632	}
633	else {
634	pos[0] = pos[1] = 0;
635	}
636	}
637
638	#endif
639
640
641	/**
642	* This function is called by MakeCurrent() and determines whether or
643	* not a new rendering context should be bound to Chromium or the native
644	* OpenGL.
645	* \return GL_FALSE if native OpenGL should be used, or GL_TRUE if Chromium
646	* should be used.
647	*/
648	static GLboolean
649	stubCheckUseChromium( WindowInfo *window )
650	{
651	int x, y;
652	unsigned int w, h;
653
654	/* If the provided window is CHROMIUM, we're clearly intended
655	* to create a CHROMIUM context.
656	*/
657	if (window->type == CHROMIUM)
658	return GL_TRUE;
659
660	if (stub.ignoreFreeglutMenus) {
661	const char *glutMenuTitle = "freeglut menu";
662	char title[1000];
663	GetWindowTitle(window, title);
664	if (crStrcmp(title, glutMenuTitle) == 0) {
665	crDebug("GL faker: Ignoring freeglut menu window");
666	return GL_FALSE;
667	}
668	}
669
670	/* If the user's specified a window count for Chromium, see if
671	* this window satisfies that criterium.
672	*/
673	stub.matchChromiumWindowCounter++;
674	if (stub.matchChromiumWindowCount > 0) {
675	if (stub.matchChromiumWindowCounter != stub.matchChromiumWindowCount) {
676	crDebug("Using native GL, app window doesn't meet match_window_count");
677	return GL_FALSE;
678	}
679	}
680
681	/* If the user's specified a window list to ignore, see if this
682	* window satisfies that criterium.
683	*/
684	if (stub.matchChromiumWindowID) {
685	GLuint i;
686
687	for (i = 0; i <= stub.numIgnoreWindowID; i++) {
688	if (stub.matchChromiumWindowID[i] == stub.matchChromiumWindowCounter) {
689	crDebug("Ignore window ID %d, using native GL", stub.matchChromiumWindowID[i]);
690	return GL_FALSE;
691	}
692	}
693	}
694
695	/* If the user's specified a minimum window size for Chromium, see if
696	* this window satisfies that criterium.
697	*/
698	if (stub.minChromiumWindowWidth > 0 &&
699	stub.minChromiumWindowHeight > 0) {
700	stubGetWindowGeometry( window, &x, &y, &w, &h );
701	if (w >= stub.minChromiumWindowWidth &&
702	h >= stub.minChromiumWindowHeight) {
703
704	/* Check for maximum sized window now too */
705	if (stub.maxChromiumWindowWidth &&
706	stub.maxChromiumWindowHeight) {
707	if (w < stub.maxChromiumWindowWidth &&
708	h < stub.maxChromiumWindowHeight)
709	return GL_TRUE;
710	else
711	return GL_FALSE;
712	}
713
714	return GL_TRUE;
715	}
716	crDebug("Using native GL, app window doesn't meet minimum_window_size");
717	return GL_FALSE;
718	}
719	else if (stub.matchWindowTitle) {
720	/* If the user's specified a window title for Chromium, see if this
721	* window satisfies that criterium.
722	*/
723	GLboolean wildcard = GL_FALSE;
724	char title[1000];
725	char *titlePattern;
726	int len;
727	/* check for leading '' wildcard /
728	if (stub.matchWindowTitle[0] == '*') {
729	titlePattern = crStrdup( stub.matchWindowTitle + 1 );
730	wildcard = GL_TRUE;
731	}
732	else {
733	titlePattern = crStrdup( stub.matchWindowTitle );
734	}
735	/* check for trailing '' wildcard /
736	len = crStrlen(titlePattern);
737	if (len > 0 && titlePattern[len - 1] == '*') {
738	titlePattern[len - 1] = '\0'; /* terminate here */
739	wildcard = GL_TRUE;
740	}
741
742	GetWindowTitle( window, title );
743	if (title[0]) {
744	if (wildcard) {
745	if (crStrstr(title, titlePattern)) {
746	crFree(titlePattern);
747	return GL_TRUE;
748	}
749	}
750	else if (crStrcmp(title, titlePattern) == 0) {
751	crFree(titlePattern);
752	return GL_TRUE;
753	}
754	}
755	crFree(titlePattern);
756	crDebug("Using native GL, app window title doesn't match match_window_title string (\"%s\" != \"%s\")", title, stub.matchWindowTitle);
757	return GL_FALSE;
758	}
759
760	/* Window title and size don't matter */
761	CRASSERT(stub.minChromiumWindowWidth == 0);
762	CRASSERT(stub.minChromiumWindowHeight == 0);
763	CRASSERT(stub.matchWindowTitle == NULL);
764
765	/* User hasn't specified a width/height or window title.
766	* We'll use chromium for this window (and context) if no other is.
767	*/
768
769	return GL_TRUE; /* use Chromium! */
770	}
771
772
773	GLboolean
774	stubMakeCurrent( WindowInfo window, ContextInfo context )
775	{
776	GLboolean retVal;
777
778	/*
779	* Get WindowInfo and ContextInfo pointers.
780	*/
781
782	if (!context \|\| !window) {
783	if (stub.currentContext)
784	stub.currentContext->currentDrawable = NULL;
785	if (context)
786	context->currentDrawable = NULL;
787	stub.currentContext = NULL;
788	return GL_TRUE; /* OK */
789	}
790
791	#ifdef CHROMIUM_THREADSAFE
792	stubCheckMultithread();
793	#endif
794
795	if (context->type == UNDECIDED) {
796	/* Here's where we really create contexts */
797	#ifdef CHROMIUM_THREADSAFE
798	crLockMutex(&stub.mutex);
799	#endif
800
801	if (stubCheckUseChromium(window)) {
802	/*
803	* Create a Chromium context.
804	*/
805	#if defined(GLX) \|\| defined(DARWIN)
806	GLint spuShareCtx = context->share ? context->share->spuContext : 0;
807	#else
808	GLint spuShareCtx = 0;
809	#endif
810
811	CRASSERT(stub.spu);
812	CRASSERT(stub.spu->dispatch_table.CreateContext);
813	context->type = CHROMIUM;
814
815	context->spuContext
816	= stub.spu->dispatch_table.CreateContext( context->dpyName,
817	context->visBits,
818	spuShareCtx );
819	if (window->spuWindow == -1)
820	{
821	window->spuWindow = stub.spu->dispatch_table.WindowCreate( window->dpyName, context->visBits );
822	CRASSERT(!context->pOwnWindow);
823	context->pOwnWindow = window;
824	}
825	}
826	else {
827	/*
828	* Create a native OpenGL context.
829	*/
830	if (!InstantiateNativeContext(window, context))
831	{
832	#ifdef CHROMIUM_THREADSAFE
833	crUnlockMutex(&stub.mutex);
834	#endif
835	return 0; /* false */
836	}
837	context->type = NATIVE;
838	}
839
840	#ifdef CHROMIUM_THREADSAFE
841	crUnlockMutex(&stub.mutex);
842	#endif
843	}
844
845
846	if (context->type == NATIVE) {
847	/*
848	* Native OpenGL MakeCurrent().
849	*/
850	#ifdef WINDOWS
851	retVal = (GLboolean) stub.wsInterface.wglMakeCurrent( window->drawable, context->hglrc );
852	#elif defined(Darwin)
853	// XXX \todo We need to differentiate between these two..
854	retVal = ( stub.wsInterface.CGLSetSurface(context->cglc, window->connection, window->drawable, window->surface) == noErr );
855	retVal = ( stub.wsInterface.CGLSetCurrentContext(context->cglc) == noErr );
856	#elif defined(GLX)
857	retVal = (GLboolean) stub.wsInterface.glXMakeCurrent( window->dpy, window->drawable, context->glxContext );
858	#endif
859	}
860	else {
861	/*
862	* SPU chain MakeCurrent().
863	*/
864	CRASSERT(context->type == CHROMIUM);
865	CRASSERT(context->spuContext >= 0);
866
867	if (context->currentDrawable && context->currentDrawable != window)
868	crWarning("Rebinding context %p to a different window", context);
869
870	if (window->type == NATIVE) {
871	crWarning("Can't rebind a chromium context to a native window\n");
872	retVal = 0;
873	}
874	else {
875	if (window->spuWindow == -1)
876	{
877	window->spuWindow = stub.spu->dispatch_table.WindowCreate( window->dpyName, context->visBits );
878	CRASSERT(!context->pOwnWindow);
879	context->pOwnWindow = window;
880	}
881
882	if (window->spuWindow != (GLint)window->drawable)
883	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, (GLint) window->drawable, context->spuContext );
884	else
885	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, 0, /* native window handle */ context->spuContext );
886
887	retVal = 1;
888	}
889	}
890
891	window->type = context->type;
892	context->currentDrawable = window;
893	stub.currentContext = context;
894
895	if (retVal) {
896	/* Now, if we've transitions from Chromium to native rendering, or
897	* vice versa, we have to change all the OpenGL entrypoint pointers.
898	*/
899	if (context->type == NATIVE) {
900	/* Switch to native API */
901	/printf(" Switching to native API\n");/
902	stubSetDispatch(&stub.nativeDispatch);
903	}
904	else if (context->type == CHROMIUM) {
905	/* Switch to stub (SPU) API */
906	/printf(" Switching to spu API\n");/
907	stubSetDispatch(&stub.spuDispatch);
908	}
909	else {
910	/* no API switch needed */
911	}
912	}
913
914	if (!window->width && window->type == CHROMIUM) {
915	/* One time window setup */
916	int x, y;
917	unsigned int winW, winH;
918
919	stubGetWindowGeometry( window, &x, &y, &winW, &winH );
920
921	/* If we're not using GLX/WGL (no app window) we'll always get
922	* a width and height of zero here. In that case, skip the viewport
923	* call since we're probably using a tilesort SPU with fake_window_dims
924	* which the tilesort SPU will use for the viewport.
925	*/
926	window->width = winW;
927	window->height = winH;
928	if (stub.trackWindowSize)
929	stub.spuDispatch.WindowSize( window->spuWindow, winW, winH );
930	if (winW > 0 && winH > 0)
931	stub.spu->dispatch_table.Viewport( 0, 0, winW, winH );
932	}
933
934	/* Update window mapping state.
935	* Basically, this lets us hide render SPU windows which correspond
936	* to unmapped application windows. Without this, perfly (for example)
937	* opens lots of temporary windows which otherwise clutter the screen.
938	*/
939	if (stub.trackWindowVisibility && window->type == CHROMIUM && window->drawable) {
940	const int mapped = stubIsWindowVisible(window);
941	if (mapped != window->mapped) {
942	stub.spu->dispatch_table.WindowShow(window->spuWindow, mapped);
943	window->mapped = mapped;
944	}
945	}
946
947	return retVal;
948	}
949
950
951
952	void
953	stubDestroyContext( unsigned long contextId )
954	{
955	ContextInfo *context;
956
957	if (!stub.contextTable) {
958	return;
959	}
960	context = (ContextInfo *) crHashtableSearch(stub.contextTable, contextId);
961
962	CRASSERT(context);
963
964	if (context->type == NATIVE) {
965	#ifdef WINDOWS
966	stub.wsInterface.wglDeleteContext( context->hglrc );
967	#elif defined(Darwin)
968	stub.wsInterface.CGLDestroyContext( context->cglc );
969	#elif defined(GLX)
970	stub.wsInterface.glXDestroyContext( context->dpy, context->glxContext );
971	#endif
972	}
973	else if (context->type == CHROMIUM) {
974	/* Have pack SPU or tilesort SPU, etc. destroy the context */
975	CRASSERT(context->spuContext >= 0);
976	stub.spu->dispatch_table.DestroyContext( context->spuContext );
977	if (context->pOwnWindow)
978	{
979	/* Note: can't use WindowFromDC(context->pOwnWindow->drawable) here
980	because GL context is already released from DC and actual guest window
981	could be destroyed.
982	*/
983	crWindowDestroy((GLint)context->pOwnWindow->hWnd);
984	}
985	}
986
987	if (stub.currentContext == context) {
988	stub.currentContext = NULL;
989	}
990
991	crMemZero(context, sizeof(ContextInfo)); /* just to be safe */
992	crHashtableDelete(stub.contextTable, contextId, crFree);
993	}
994
995
996	void
997	stubSwapBuffers( const WindowInfo *window, GLint flags )
998	{
999	if (!window)
1000	return;
1001
1002	/* Determine if this window is being rendered natively or through
1003	* Chromium.
1004	*/
1005
1006	if (window->type == NATIVE) {
1007	/printf("** Swapping native window %d\n", (int) drawable);*/
1008	#ifdef WINDOWS
1009	(void) stub.wsInterface.wglSwapBuffers( window->drawable );
1010	#elif defined(Darwin)
1011	/* ...is this ok? */
1012	/* stub.wsInterface.CGLFlushDrawable( context->cglc ); */
1013	crDebug("stubSwapBuffers: unable to swap (no context!)");
1014	#elif defined(GLX)
1015	stub.wsInterface.glXSwapBuffers( window->dpy, window->drawable );
1016	#endif
1017	}
1018	else if (window->type == CHROMIUM) {
1019	/* Let the SPU do the buffer swap */
1020	/printf("** Swapping chromium window %d\n", (int) drawable);*/
1021	if (stub.appDrawCursor) {
1022	int pos[2];
1023	GetCursorPosition(window, pos);
1024	stub.spu->dispatch_table.ChromiumParametervCR(GL_CURSOR_POSITION_CR, GL_INT, 2, pos);
1025	}
1026	stub.spu->dispatch_table.SwapBuffers( window->spuWindow, flags );
1027	}
1028	else {
1029	crDebug("Calling SwapBuffers on a window we haven't seen before (no-op).");
1030	}
1031	}

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source: vbox/trunk/src/VBox/Additions/WINNT/Graphics/crOpenGL/context.c@ 16241

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