context.c@ 19420

Last change on this file since 19420 was 16718, checked in by vboxsync, 16 years ago
crOpenGL: another 8x speed up for compiz, xdamage but without regions info yet
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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	winInfo->cVisibleRegions = 0;
142	#endif
143	winInfo->spuWindow = spuWin;
144
145	crHashtableAdd(stub.windowTable, (unsigned int) spuWin, winInfo);
146
147	return spuWin;
148	}
149
150
151	GLboolean
152	stubIsWindowVisible( const WindowInfo *win )
153	{
154	#if defined(WINDOWS)
155	return GL_TRUE;
156	#elif defined(Darwin)
157	return GL_TRUE;
158	#elif defined(GLX)
159	if (win->dpy) {
160	XWindowAttributes attr;
161	XGetWindowAttributes(win->dpy, win->drawable, &attr);
162	return (attr.map_state != IsUnmapped);
163	}
164	else {
165	/* probably created by crWindowCreate() */
166	return win->mapped;
167	}
168	#endif
169	}
170
171
172	/**
173	* Given a Windows HDC or GLX Drawable, return the corresponding
174	* WindowInfo structure. Create a new one if needed.
175	*/
176	WindowInfo *
177	#ifdef WINDOWS
178	stubGetWindowInfo( HDC drawable )
179	#elif defined(Darwin)
180	stubGetWindowInfo( CGSWindowID drawable )
181	#elif defined(GLX)
182	stubGetWindowInfo( Display *dpy, GLXDrawable drawable )
183	#endif
184	{
185	#ifndef WINDOWS
186	WindowInfo winInfo = (WindowInfo ) crHashtableSearch(stub.windowTable, (unsigned int) drawable);
187	#else
188	WindowInfo *winInfo;
189	HWND hwnd;
190	hwnd = WindowFromDC(drawable);
191
192	if (!hwnd)
193	{
194	crError("Can't get HWND for given HDC(%x)", drawable);
195	}
196
197	winInfo = (WindowInfo *) crHashtableSearch(stub.windowTable, (unsigned int) hwnd);
198	#endif
199	if (!winInfo) {
200	winInfo = (WindowInfo *) crCalloc(sizeof(WindowInfo));
201	if (!winInfo)
202	return NULL;
203	#ifdef GLX
204	crStrncpy(winInfo->dpyName, DisplayString(dpy), MAX_DPY_NAME);
205	winInfo->dpyName[MAX_DPY_NAME-1] = 0;
206	winInfo->dpy = dpy;
207	winInfo->pVisibleRegions = NULL;
208	#elif defined(Darwin)
209	winInfo->connection = _CGSDefaultConnection(); // store our connection as default
210	#elif defined(WINDOWS)
211	winInfo->hVisibleRegion = INVALID_HANDLE_VALUE;
212	winInfo->hWnd = hwnd;
213	#endif
214	winInfo->drawable = drawable;
215	winInfo->type = UNDECIDED;
216	winInfo->spuWindow = -1;
217	winInfo->mapped = -1; /* don't know */
218	#ifndef WINDOWS
219	crHashtableAdd(stub.windowTable, (unsigned int) drawable, winInfo);
220	#else
221	crHashtableAdd(stub.windowTable, (unsigned int) hwnd, winInfo);
222	#endif
223	}
224	return winInfo;
225	}
226
227
228	/**
229	* Allocate a new ContextInfo object, initialize it, put it into the
230	* context hash table. If type==CHROMIUM, call the head SPU's
231	* CreateContext() function too.
232	*/
233	ContextInfo *
234	stubNewContext( const char *dpyName, GLint visBits, ContextType type,
235	unsigned long shareCtx )
236	{
237	GLint spuContext = -1, spuShareCtx = 0;
238	ContextInfo *context;
239
240	if (shareCtx > 0) {
241	/* translate shareCtx to a SPU context ID */
242	context = (ContextInfo *)
243	crHashtableSearch(stub.contextTable, shareCtx);
244	if (context)
245	spuShareCtx = context->spuContext;
246	}
247
248	if (type == CHROMIUM) {
249	spuContext
250	= stub.spu->dispatch_table.CreateContext(dpyName, visBits, spuShareCtx);
251	if (spuContext < 0)
252	return NULL;
253	}
254
255	context = crCalloc(sizeof(ContextInfo));
256	if (!context) {
257	stub.spu->dispatch_table.DestroyContext(spuContext);
258	return NULL;
259	}
260
261	if (!dpyName)
262	dpyName = "";
263
264	context->id = stub.freeContextNumber++;
265	context->type = type;
266	context->spuContext = spuContext;
267	context->visBits = visBits;
268	context->currentDrawable = NULL;
269	context->pOwnWindow = NULL;
270	crStrncpy(context->dpyName, dpyName, MAX_DPY_NAME);
271	context->dpyName[MAX_DPY_NAME-1] = 0;
272
273	#if defined(GLX) \|\| defined(DARWIN)
274	context->share = (ContextInfo *)
275	crHashtableSearch(stub.contextTable, (unsigned long) shareCtx);
276	#endif
277
278	#ifdef GLX
279	context->pGLXPixmapsHash = crAllocHashtable();
280	context->damageInitFailed = GL_FALSE;
281	context->damageDpy = NULL;
282	context->damageEventsBase = 0;
283	#endif
284
285	crHashtableAdd(stub.contextTable, context->id, (void *) context);
286
287	return context;
288	}
289
290
291	#ifdef Darwin
292
293	#define SET_ATTR(l,i,a) ( (l)[(i)++] = (a) )
294	#define SET_ATTR_V(l,i,a,v) ( SET_ATTR(l,i,a), SET_ATTR(l,i,v) )
295
296	void stubSetPFA( ContextInfo ctx, CGLPixelFormatAttribute attribs, int size, GLint *num ) {
297	GLuint visual = ctx->visBits;
298	int i = 0;
299
300	CRASSERT(visual & CR_RGB_BIT);
301
302	SET_ATTR_V(attribs, i, kCGLPFAColorSize, 8);
303
304	if( visual & CR_DEPTH_BIT )
305	SET_ATTR_V(attribs, i, kCGLPFADepthSize, 16);
306
307	if( visual & CR_ACCUM_BIT )
308	SET_ATTR_V(attribs, i, kCGLPFAAccumSize, 1);
309
310	if( visual & CR_STENCIL_BIT )
311	SET_ATTR_V(attribs, i, kCGLPFAStencilSize, 1);
312
313	if( visual & CR_ALPHA_BIT )
314	SET_ATTR_V(attribs, i, kCGLPFAAlphaSize, 1);
315
316	if( visual & CR_DOUBLE_BIT )
317	SET_ATTR(attribs, i, kCGLPFADoubleBuffer);
318
319	if( visual & CR_STEREO_BIT )
320	SET_ATTR(attribs, i, kCGLPFAStereo);
321
322	/* SET_ATTR_V(attribs, i, kCGLPFASampleBuffers, 1);
323	SET_ATTR_V(attribs, i, kCGLPFASamples, 0);
324	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, 0); */
325	SET_ATTR(attribs, i, kCGLPFABackingStore);
326	SET_ATTR(attribs, i, kCGLPFAWindow);
327	SET_ATTR_V(attribs, i, kCGLPFADisplayMask, ctx->disp_mask);
328
329	SET_ATTR(attribs, i, 0);
330
331	*num = i;
332	}
333
334	#endif
335
336	/**
337	* This creates a native GLX/WGL context.
338	*/
339	static GLboolean
340	InstantiateNativeContext( WindowInfo window, ContextInfo context )
341	{
342	#ifdef WINDOWS
343	context->hglrc = stub.wsInterface.wglCreateContext( window->drawable );
344	return context->hglrc ? GL_TRUE : GL_FALSE;
345	#elif defined(Darwin)
346	CGLContextObj shareCtx = NULL;
347	CGLPixelFormatObj pix;
348	long npix;
349
350	CGLPixelFormatAttribute attribs[16];
351	GLint ind = 0;
352
353	if( context->share ) {
354	if( context->cglc != context->share->cglc ) {
355	crWarning("CGLCreateContext() is trying to share a non-existant "
356	"CGL context. Setting share context to zero.");
357	shareCtx = 0;
358	}
359	else
360	shareCtx = context->cglc;
361	}
362
363	stubSetPFA( context, attribs, 16, &ind );
364
365	stub.wsInterface.CGLChoosePixelFormat( attribs, &pix, &npix );
366	stub.wsInterface.CGLCreateContext( pix, shareCtx, &context->cglc );
367	if( !context->cglc )
368	crError("InstantiateNativeContext: Couldn't Create the context!");
369
370	stub.wsInterface.CGLDestroyPixelFormat( pix );
371
372	if( context->parambits ) {
373	/* Set the delayed parameters */
374	if( context->parambits & VISBIT_SWAP_RECT )
375	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapRectangle, context->swap_rect );
376
377	if( context->parambits & VISBIT_SWAP_INTERVAL )
378	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPSwapInterval, &(context->swap_interval) );
379
380	if( context->parambits & VISBIT_CLIENT_STORAGE )
381	stub.wsInterface.CGLSetParameter( context->cglc, kCGLCPClientStorage, (long*)&(context->client_storage) );
382
383	context->parambits = 0;
384	}
385
386	return context->cglc ? GL_TRUE : GL_FALSE;
387	#elif defined(GLX)
388	GLXContext shareCtx = 0;
389
390	/* sort out context sharing here */
391	if (context->share) {
392	if (context->glxContext != context->share->glxContext) {
393	crWarning("glXCreateContext() is trying to share a non-existant "
394	"GLX context. Setting share context to zero.");
395	shareCtx = 0;
396	}
397	else {
398	shareCtx = context->glxContext;
399	}
400	}
401
402	context->glxContext = stub.wsInterface.glXCreateContext( window->dpy,
403	context->visual, shareCtx, context->direct );
404
405	return context->glxContext ? GL_TRUE : GL_FALSE;
406	#endif
407	}
408
409
410	/**
411	* Utility functions to get window size and titlebar text.
412	*/
413	#ifdef WINDOWS
414
415	void
416	stubGetWindowGeometry( const WindowInfo window, int x, int *y,
417	unsigned int w, unsigned int h )
418	{
419	RECT rect;
420	HWND hwnd;
421
422	if (!window->drawable) {
423	w = h = 0;
424	return;
425	}
426
427	hwnd = WindowFromDC( window->drawable );
428
429	if (!hwnd) {
430	*w = 0;
431	*h = 0;
432	}
433	else {
434	GetClientRect( hwnd, &rect );
435	*w = rect.right - rect.left;
436	*h = rect.bottom - rect.top;
437	ClientToScreen( hwnd, (LPPOINT) &rect );
438	*x = rect.left;
439	*y = rect.top;
440	}
441	}
442
443	static void
444	GetWindowTitle( const WindowInfo window, char title )
445	{
446	HWND hwnd;
447	/* XXX - we don't handle recurseUp */
448	hwnd = WindowFromDC( window->drawable );
449	if (hwnd)
450	GetWindowText(hwnd, title, 100);
451	else
452	title[0] = 0;
453	}
454
455	static void
456	GetCursorPosition( const WindowInfo *window, int pos[2] )
457	{
458	RECT rect;
459	POINT point;
460	GLint size[2], x, y;
461	unsigned int NativeHeight, NativeWidth, ChromiumHeight, ChromiumWidth;
462	float WidthRatio, HeightRatio;
463	static int DebugFlag = 0;
464
465	// apparently the "window" parameter passed to this
466	// function contains the native window information
467	HWND NATIVEhwnd = WindowFromDC( window->drawable );
468
469	// get the native window's height and width
470	stubGetWindowGeometry(window, &x, &y, &NativeWidth, &NativeHeight);
471
472	// get the spu window's height and width
473	stub.spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, window->spuWindow, GL_INT, 2, size);
474	ChromiumWidth = size[0];
475	ChromiumHeight = size[1];
476
477	// get the ratio of the size of the native window to the cr window
478	WidthRatio = (float)ChromiumWidth / (float)NativeWidth;
479	HeightRatio = (float)ChromiumHeight / (float)NativeHeight;
480
481	// output some debug information at the beginning
482	if(DebugFlag)
483	{
484	DebugFlag = 0;
485	crDebug("Native Window Handle = %d", NATIVEhwnd);
486	crDebug("Native Width = %i", NativeWidth);
487	crDebug("Native Height = %i", NativeHeight);
488	crDebug("Chromium Width = %i", ChromiumWidth);
489	crDebug("Chromium Height = %i", ChromiumHeight);
490	}
491
492	if (NATIVEhwnd)
493	{
494	GetClientRect( NATIVEhwnd, &rect );
495	GetCursorPos (&point);
496
497	// make sure these coordinates are relative to the native window,
498	// not the whole desktop
499	ScreenToClient(NATIVEhwnd, &point);
500
501	// calculate the new position of the virtual cursor
502	pos[0] = (int)(point.x * WidthRatio);
503	pos[1] = (int)((NativeHeight - point.y) * HeightRatio);
504	}
505	else
506	{
507	pos[0] = 0;
508	pos[1] = 0;
509	}
510	}
511
512	#elif defined(Darwin)
513
514	extern OSStatus CGSGetScreenRectForWindow( CGSConnectionID cid, CGSWindowID wid, float *outRect );
515	extern OSStatus CGSGetWindowBounds( CGSConnectionID cid, CGSWindowID wid, float *bounds );
516
517	void
518	stubGetWindowGeometry( const WindowInfo window, int x, int y, unsigned int w, unsigned int *h )
519	{
520	float rect[4];
521
522	if( !window \|\|
523	!window->connection \|\|
524	!window->drawable \|\|
525	CGSGetWindowBounds( window->connection, window->drawable, rect ) != noErr )
526	{
527	x = y = 0;
528	w = h = 0;
529	} else {
530	*x = (int) rect[0];
531	*y = (int) rect[1];
532	*w = (int) rect[2];
533	*h = (int) rect[3];
534	}
535	}
536
537
538	static void
539	GetWindowTitle( const WindowInfo window, char title )
540	{
541	/* XXX \todo Darwin window Title */
542	title[0] = '\0';
543	}
544
545
546	static void
547	GetCursorPosition( const WindowInfo *window, int pos[2] )
548	{
549	Point mouse_pos;
550	float window_rect[4];
551
552	GetMouse( &mouse_pos );
553	CGSGetScreenRectForWindow( window->connection, window->drawable, window_rect );
554
555	pos[0] = mouse_pos.h - (int) window_rect[0];
556	pos[1] = (int) window_rect[3] - (mouse_pos.v - (int) window_rect[1]);
557
558	/crDebug( "%i %i", pos[0], pos[1] );/
559	}
560
561	#elif defined(GLX)
562
563	void
564	stubGetWindowGeometry( const WindowInfo window, int x, int *y,
565	unsigned int w, unsigned int h )
566	{
567	Window root, child;
568	unsigned int border, depth;
569
570	//@todo: Performing those checks is expensive operation, especially for simple apps with high FPS.
571	// Disabling those tripples glxgears fps, thus using xevens instead of per frame polling is much more preffered.
572	//@todo: Check similiar on windows guests, though doubtfull as there're no XSync like calls on windows.
573	if (!window
574	\|\| !window->dpy
575	\|\| !window->drawable
576	\|\| !XGetGeometry(window->dpy, window->drawable, &root,
577	x, y, w, h, &border, &depth)
578	\|\| !XTranslateCoordinates(window->dpy, window->drawable, root,
579	0, 0, x, y, &child))
580	{
581	crWarning("Failed to get windows geometry for %x, try xwininfo", (int) window);
582	x = y = 0;
583	w = h = 0;
584	}
585	}
586
587	static char *
588	GetWindowTitleHelper( Display *dpy, Window window, GLboolean recurseUp )
589	{
590	while (1) {
591	char *name;
592	if (!XFetchName(dpy, window, &name))
593	return NULL;
594	if (name[0]) {
595	return name;
596	}
597	else if (recurseUp) {
598	/* This window has no name, try the parent */
599	Status stat;
600	Window root, parent, *children;
601	unsigned int numChildren;
602	stat = XQueryTree( dpy, window, &root, &parent,
603	&children, &numChildren );
604	if (!stat \|\| window == root)
605	return NULL;
606	if (children)
607	XFree(children);
608	window = parent;
609	}
610	else {
611	XFree(name);
612	return NULL;
613	}
614	}
615	}
616
617	static void
618	GetWindowTitle( const WindowInfo window, char title )
619	{
620	char *t = GetWindowTitleHelper(window->dpy, window->drawable, GL_TRUE);
621	if (t) {
622	crStrcpy(title, t);
623	XFree(t);
624	}
625	else {
626	title[0] = 0;
627	}
628	}
629
630
631	/**
632	*Return current cursor position in local window coords.
633	*/
634	static void
635	GetCursorPosition( const WindowInfo *window, int pos[2] )
636	{
637	int rootX, rootY;
638	Window root, child;
639	unsigned int mask;
640	int x, y;
641	Bool q = XQueryPointer(window->dpy, window->drawable, &root, &child,
642	&rootX, &rootY, &pos[0], &pos[1], &mask);
643	if (q) {
644	unsigned int w, h;
645	stubGetWindowGeometry( window, &x, &y, &w, &h );
646	/* invert Y */
647	pos[1] = (int) h - pos[1] - 1;
648	}
649	else {
650	pos[0] = pos[1] = 0;
651	}
652	}
653
654	#endif
655
656
657	/**
658	* This function is called by MakeCurrent() and determines whether or
659	* not a new rendering context should be bound to Chromium or the native
660	* OpenGL.
661	* \return GL_FALSE if native OpenGL should be used, or GL_TRUE if Chromium
662	* should be used.
663	*/
664	static GLboolean
665	stubCheckUseChromium( WindowInfo *window )
666	{
667	int x, y;
668	unsigned int w, h;
669
670	/* If the provided window is CHROMIUM, we're clearly intended
671	* to create a CHROMIUM context.
672	*/
673	if (window->type == CHROMIUM)
674	return GL_TRUE;
675
676	if (stub.ignoreFreeglutMenus) {
677	const char *glutMenuTitle = "freeglut menu";
678	char title[1000];
679	GetWindowTitle(window, title);
680	if (crStrcmp(title, glutMenuTitle) == 0) {
681	crDebug("GL faker: Ignoring freeglut menu window");
682	return GL_FALSE;
683	}
684	}
685
686	/* If the user's specified a window count for Chromium, see if
687	* this window satisfies that criterium.
688	*/
689	stub.matchChromiumWindowCounter++;
690	if (stub.matchChromiumWindowCount > 0) {
691	if (stub.matchChromiumWindowCounter != stub.matchChromiumWindowCount) {
692	crDebug("Using native GL, app window doesn't meet match_window_count");
693	return GL_FALSE;
694	}
695	}
696
697	/* If the user's specified a window list to ignore, see if this
698	* window satisfies that criterium.
699	*/
700	if (stub.matchChromiumWindowID) {
701	GLuint i;
702
703	for (i = 0; i <= stub.numIgnoreWindowID; i++) {
704	if (stub.matchChromiumWindowID[i] == stub.matchChromiumWindowCounter) {
705	crDebug("Ignore window ID %d, using native GL", stub.matchChromiumWindowID[i]);
706	return GL_FALSE;
707	}
708	}
709	}
710
711	/* If the user's specified a minimum window size for Chromium, see if
712	* this window satisfies that criterium.
713	*/
714	if (stub.minChromiumWindowWidth > 0 &&
715	stub.minChromiumWindowHeight > 0) {
716	stubGetWindowGeometry( window, &x, &y, &w, &h );
717	if (w >= stub.minChromiumWindowWidth &&
718	h >= stub.minChromiumWindowHeight) {
719
720	/* Check for maximum sized window now too */
721	if (stub.maxChromiumWindowWidth &&
722	stub.maxChromiumWindowHeight) {
723	if (w < stub.maxChromiumWindowWidth &&
724	h < stub.maxChromiumWindowHeight)
725	return GL_TRUE;
726	else
727	return GL_FALSE;
728	}
729
730	return GL_TRUE;
731	}
732	crDebug("Using native GL, app window doesn't meet minimum_window_size");
733	return GL_FALSE;
734	}
735	else if (stub.matchWindowTitle) {
736	/* If the user's specified a window title for Chromium, see if this
737	* window satisfies that criterium.
738	*/
739	GLboolean wildcard = GL_FALSE;
740	char title[1000];
741	char *titlePattern;
742	int len;
743	/* check for leading '' wildcard /
744	if (stub.matchWindowTitle[0] == '*') {
745	titlePattern = crStrdup( stub.matchWindowTitle + 1 );
746	wildcard = GL_TRUE;
747	}
748	else {
749	titlePattern = crStrdup( stub.matchWindowTitle );
750	}
751	/* check for trailing '' wildcard /
752	len = crStrlen(titlePattern);
753	if (len > 0 && titlePattern[len - 1] == '*') {
754	titlePattern[len - 1] = '\0'; /* terminate here */
755	wildcard = GL_TRUE;
756	}
757
758	GetWindowTitle( window, title );
759	if (title[0]) {
760	if (wildcard) {
761	if (crStrstr(title, titlePattern)) {
762	crFree(titlePattern);
763	return GL_TRUE;
764	}
765	}
766	else if (crStrcmp(title, titlePattern) == 0) {
767	crFree(titlePattern);
768	return GL_TRUE;
769	}
770	}
771	crFree(titlePattern);
772	crDebug("Using native GL, app window title doesn't match match_window_title string (\"%s\" != \"%s\")", title, stub.matchWindowTitle);
773	return GL_FALSE;
774	}
775
776	/* Window title and size don't matter */
777	CRASSERT(stub.minChromiumWindowWidth == 0);
778	CRASSERT(stub.minChromiumWindowHeight == 0);
779	CRASSERT(stub.matchWindowTitle == NULL);
780
781	/* User hasn't specified a width/height or window title.
782	* We'll use chromium for this window (and context) if no other is.
783	*/
784
785	return GL_TRUE; /* use Chromium! */
786	}
787
788
789	GLboolean
790	stubMakeCurrent( WindowInfo window, ContextInfo context )
791	{
792	GLboolean retVal;
793
794	/*
795	* Get WindowInfo and ContextInfo pointers.
796	*/
797
798	if (!context \|\| !window) {
799	if (stub.currentContext)
800	stub.currentContext->currentDrawable = NULL;
801	if (context)
802	context->currentDrawable = NULL;
803	stub.currentContext = NULL;
804	return GL_TRUE; /* OK */
805	}
806
807	#ifdef CHROMIUM_THREADSAFE
808	stubCheckMultithread();
809	#endif
810
811	if (context->type == UNDECIDED) {
812	/* Here's where we really create contexts */
813	#ifdef CHROMIUM_THREADSAFE
814	crLockMutex(&stub.mutex);
815	#endif
816
817	if (stubCheckUseChromium(window)) {
818	/*
819	* Create a Chromium context.
820	*/
821	#if defined(GLX) \|\| defined(DARWIN)
822	GLint spuShareCtx = context->share ? context->share->spuContext : 0;
823	#else
824	GLint spuShareCtx = 0;
825	#endif
826
827	CRASSERT(stub.spu);
828	CRASSERT(stub.spu->dispatch_table.CreateContext);
829	context->type = CHROMIUM;
830
831	context->spuContext
832	= stub.spu->dispatch_table.CreateContext( context->dpyName,
833	context->visBits,
834	spuShareCtx );
835	if (window->spuWindow == -1)
836	{
837	window->spuWindow = stub.spu->dispatch_table.WindowCreate( window->dpyName, context->visBits );
838	CRASSERT(!context->pOwnWindow);
839	context->pOwnWindow = window;
840	}
841	}
842	else {
843	/*
844	* Create a native OpenGL context.
845	*/
846	if (!InstantiateNativeContext(window, context))
847	{
848	#ifdef CHROMIUM_THREADSAFE
849	crUnlockMutex(&stub.mutex);
850	#endif
851	return 0; /* false */
852	}
853	context->type = NATIVE;
854	}
855
856	#ifdef CHROMIUM_THREADSAFE
857	crUnlockMutex(&stub.mutex);
858	#endif
859	}
860
861
862	if (context->type == NATIVE) {
863	/*
864	* Native OpenGL MakeCurrent().
865	*/
866	#ifdef WINDOWS
867	retVal = (GLboolean) stub.wsInterface.wglMakeCurrent( window->drawable, context->hglrc );
868	#elif defined(Darwin)
869	// XXX \todo We need to differentiate between these two..
870	retVal = ( stub.wsInterface.CGLSetSurface(context->cglc, window->connection, window->drawable, window->surface) == noErr );
871	retVal = ( stub.wsInterface.CGLSetCurrentContext(context->cglc) == noErr );
872	#elif defined(GLX)
873	retVal = (GLboolean) stub.wsInterface.glXMakeCurrent( window->dpy, window->drawable, context->glxContext );
874	#endif
875	}
876	else {
877	/*
878	* SPU chain MakeCurrent().
879	*/
880	CRASSERT(context->type == CHROMIUM);
881	CRASSERT(context->spuContext >= 0);
882
883	if (context->currentDrawable && context->currentDrawable != window)
884	crWarning("Rebinding context %p to a different window", context);
885
886	if (window->type == NATIVE) {
887	crWarning("Can't rebind a chromium context to a native window\n");
888	retVal = 0;
889	}
890	else {
891	if (window->spuWindow == -1)
892	{
893	window->spuWindow = stub.spu->dispatch_table.WindowCreate( window->dpyName, context->visBits );
894	CRASSERT(!context->pOwnWindow);
895	context->pOwnWindow = window;
896	}
897
898	if (window->spuWindow != (GLint)window->drawable)
899	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, (GLint) window->drawable, context->spuContext );
900	else
901	stub.spu->dispatch_table.MakeCurrent( window->spuWindow, 0, /* native window handle */ context->spuContext );
902
903	retVal = 1;
904	}
905	}
906
907	window->type = context->type;
908	context->currentDrawable = window;
909	stub.currentContext = context;
910
911	if (retVal) {
912	/* Now, if we've transitions from Chromium to native rendering, or
913	* vice versa, we have to change all the OpenGL entrypoint pointers.
914	*/
915	if (context->type == NATIVE) {
916	/* Switch to native API */
917	/printf(" Switching to native API\n");/
918	stubSetDispatch(&stub.nativeDispatch);
919	}
920	else if (context->type == CHROMIUM) {
921	/* Switch to stub (SPU) API */
922	/printf(" Switching to spu API\n");/
923	stubSetDispatch(&stub.spuDispatch);
924	}
925	else {
926	/* no API switch needed */
927	}
928	}
929
930	if (!window->width && window->type == CHROMIUM) {
931	/* One time window setup */
932	int x, y;
933	unsigned int winW, winH;
934
935	stubGetWindowGeometry( window, &x, &y, &winW, &winH );
936
937	/* If we're not using GLX/WGL (no app window) we'll always get
938	* a width and height of zero here. In that case, skip the viewport
939	* call since we're probably using a tilesort SPU with fake_window_dims
940	* which the tilesort SPU will use for the viewport.
941	*/
942	window->width = winW;
943	window->height = winH;
944	if (stub.trackWindowSize)
945	stub.spuDispatch.WindowSize( window->spuWindow, winW, winH );
946	if (winW > 0 && winH > 0)
947	stub.spu->dispatch_table.Viewport( 0, 0, winW, winH );
948	}
949
950	/* Update window mapping state.
951	* Basically, this lets us hide render SPU windows which correspond
952	* to unmapped application windows. Without this, perfly (for example)
953	* opens lots of temporary windows which otherwise clutter the screen.
954	*/
955	if (stub.trackWindowVisibility && window->type == CHROMIUM && window->drawable) {
956	const int mapped = stubIsWindowVisible(window);
957	if (mapped != window->mapped) {
958	crDebug("Dispatched: WindowShow(%i, %i)", window->spuWindow, mapped);
959	stub.spu->dispatch_table.WindowShow(window->spuWindow, mapped);
960	window->mapped = mapped;
961	}
962	}
963
964	return retVal;
965	}
966
967
968
969	void
970	stubDestroyContext( unsigned long contextId )
971	{
972	ContextInfo *context;
973
974	if (!stub.contextTable) {
975	return;
976	}
977	context = (ContextInfo *) crHashtableSearch(stub.contextTable, contextId);
978
979	CRASSERT(context);
980
981	if (context->type == NATIVE) {
982	#ifdef WINDOWS
983	stub.wsInterface.wglDeleteContext( context->hglrc );
984	#elif defined(Darwin)
985	stub.wsInterface.CGLDestroyContext( context->cglc );
986	#elif defined(GLX)
987	stub.wsInterface.glXDestroyContext( context->dpy, context->glxContext );
988	#endif
989	}
990	else if (context->type == CHROMIUM) {
991	/* Have pack SPU or tilesort SPU, etc. destroy the context */
992	CRASSERT(context->spuContext >= 0);
993	stub.spu->dispatch_table.DestroyContext( context->spuContext );
994	if (context->pOwnWindow)
995	{
996	/* Note: can't use WindowFromDC(context->pOwnWindow->drawable) here
997	because GL context is already released from DC and actual guest window
998	could be destroyed.
999	*/
1000	#ifdef WINDOWS
1001	crWindowDestroy((GLint)context->pOwnWindow->hWnd);
1002	#else
1003	crWindowDestroy((GLint)context->pOwnWindow->drawable);
1004	#endif
1005	}
1006	}
1007
1008	if (stub.currentContext == context) {
1009	stub.currentContext = NULL;
1010	}
1011
1012	#ifdef GLX
1013	crFreeHashtable(context->pGLXPixmapsHash, crFree);
1014	if (context->damageDpy)
1015	{
1016	XCloseDisplay(context->damageDpy);
1017	}
1018	#endif
1019
1020	crMemZero(context, sizeof(ContextInfo)); /* just to be safe */
1021	crHashtableDelete(stub.contextTable, contextId, crFree);
1022	}
1023
1024
1025	void
1026	stubSwapBuffers( const WindowInfo *window, GLint flags )
1027	{
1028	if (!window)
1029	return;
1030
1031	/* Determine if this window is being rendered natively or through
1032	* Chromium.
1033	*/
1034
1035	if (window->type == NATIVE) {
1036	/printf("** Swapping native window %d\n", (int) drawable);*/
1037	#ifdef WINDOWS
1038	(void) stub.wsInterface.wglSwapBuffers( window->drawable );
1039	#elif defined(Darwin)
1040	/* ...is this ok? */
1041	/* stub.wsInterface.CGLFlushDrawable( context->cglc ); */
1042	crDebug("stubSwapBuffers: unable to swap (no context!)");
1043	#elif defined(GLX)
1044	stub.wsInterface.glXSwapBuffers( window->dpy, window->drawable );
1045	#endif
1046	}
1047	else if (window->type == CHROMIUM) {
1048	/* Let the SPU do the buffer swap */
1049	/printf("** Swapping chromium window %d\n", (int) drawable);*/
1050	if (stub.appDrawCursor) {
1051	int pos[2];
1052	GetCursorPosition(window, pos);
1053	stub.spu->dispatch_table.ChromiumParametervCR(GL_CURSOR_POSITION_CR, GL_INT, 2, pos);
1054	}
1055	stub.spu->dispatch_table.SwapBuffers( window->spuWindow, flags );
1056	}
1057	else {
1058	crDebug("Calling SwapBuffers on a window we haven't seen before (no-op).");
1059	}
1060	}

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source: vbox/trunk/src/VBox/Additions/common/crOpenGL/context.c@ 19420

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