context.c@ 33684

Last change on this file since 33684 was 33684, checked in by vboxsync, 14 years ago
wddm/3d: fix hgcm fallback (for insufficient hgsmi resources)
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File size: 87.2 KB

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1	/*
2	* Context and render target management in wined3d
3	*
4	* Copyright 2007-2008 Stefan Dösinger for CodeWeavers
5	* Copyright 2009 Henri Verbeet for CodeWeavers
6	*
7	* This library is free software; you can redistribute it and/or
8	* modify it under the terms of the GNU Lesser General Public
9	* License as published by the Free Software Foundation; either
10	* version 2.1 of the License, or (at your option) any later version.
11	*
12	* This library is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15	* Lesser General Public License for more details.
16	*
17	* You should have received a copy of the GNU Lesser General Public
18	* License along with this library; if not, write to the Free Software
19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20	*/
21
22	/*
23	* Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice
24	* other than GPL or LGPL is available it will apply instead, Oracle elects to use only
25	* the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where
26	* a choice of LGPL license versions is made available with the language indicating
27	* that LGPLv2 or any later version may be used, or where a choice of which version
28	* of the LGPL is applied is otherwise unspecified.
29	*/
30
31	#include "config.h"
32	#include <stdio.h>
33	#ifdef HAVE_FLOAT_H
34	# include <float.h>
35	#endif
36	#include "wined3d_private.h"
37
38	WINE_DEFAULT_DEBUG_CHANNEL(d3d);
39
40	#define GLINFO_LOCATION (*gl_info)
41
42	static DWORD wined3d_context_tls_idx;
43
44	/* FBO helper functions */
45
46	/* GL locking is done by the caller */
47	void context_bind_fbo(struct wined3d_context context, GLenum target, GLuint fbo)
48	{
49	const struct wined3d_gl_info *gl_info = context->gl_info;
50	GLuint f;
51
52	if (!fbo)
53	{
54	f = 0;
55	}
56	else
57	{
58	if (!*fbo)
59	{
60	gl_info->fbo_ops.glGenFramebuffers(1, fbo);
61	checkGLcall("glGenFramebuffers()");
62	TRACE("Created FBO %u.\n", *fbo);
63	}
64	f = *fbo;
65	}
66
67	switch (target)
68	{
69	case GL_READ_FRAMEBUFFER:
70	if (context->fbo_read_binding == f) return;
71	context->fbo_read_binding = f;
72	break;
73
74	case GL_DRAW_FRAMEBUFFER:
75	if (context->fbo_draw_binding == f) return;
76	context->fbo_draw_binding = f;
77	break;
78
79	case GL_FRAMEBUFFER:
80	if (context->fbo_read_binding == f
81	&& context->fbo_draw_binding == f) return;
82	context->fbo_read_binding = f;
83	context->fbo_draw_binding = f;
84	break;
85
86	default:
87	FIXME("Unhandled target %#x.\n", target);
88	break;
89	}
90
91	gl_info->fbo_ops.glBindFramebuffer(target, f);
92	checkGLcall("glBindFramebuffer()");
93	}
94
95	/* GL locking is done by the caller */
96	static void context_clean_fbo_attachments(const struct wined3d_gl_info *gl_info)
97	{
98	unsigned int i;
99
100	for (i = 0; i < gl_info->limits.buffers; ++i)
101	{
102	gl_info->fbo_ops.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i, GL_TEXTURE_2D, 0, 0);
103	checkGLcall("glFramebufferTexture2D()");
104	}
105	gl_info->fbo_ops.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
106	checkGLcall("glFramebufferTexture2D()");
107
108	gl_info->fbo_ops.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
109	checkGLcall("glFramebufferTexture2D()");
110	}
111
112	/* GL locking is done by the caller */
113	static void context_destroy_fbo(struct wined3d_context context, GLuint fbo)
114	{
115	const struct wined3d_gl_info *gl_info = context->gl_info;
116
117	context_bind_fbo(context, GL_FRAMEBUFFER, fbo);
118	context_clean_fbo_attachments(gl_info);
119	context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
120
121	gl_info->fbo_ops.glDeleteFramebuffers(1, fbo);
122	checkGLcall("glDeleteFramebuffers()");
123	}
124
125	/* GL locking is done by the caller */
126	static void context_apply_attachment_filter_states(IWineD3DSurfaceImpl *surface)
127	{
128	IWineD3DBaseTextureImpl *texture_impl;
129
130	/* Update base texture states array */
131	if (SUCCEEDED(IWineD3DSurface_GetContainer((IWineD3DSurface *)surface,
132	&IID_IWineD3DBaseTexture, (void **)&texture_impl)))
133	{
134	IWineD3DDeviceImpl *device = surface->resource.device;
135	BOOL update_minfilter = FALSE;
136	BOOL update_magfilter = FALSE;
137
138	if (texture_impl->baseTexture.texture_rgb.states[WINED3DTEXSTA_MINFILTER] != WINED3DTEXF_POINT
139	\|\| texture_impl->baseTexture.texture_rgb.states[WINED3DTEXSTA_MIPFILTER] != WINED3DTEXF_NONE)
140	{
141	texture_impl->baseTexture.texture_rgb.states[WINED3DTEXSTA_MINFILTER] = WINED3DTEXF_POINT;
142	texture_impl->baseTexture.texture_rgb.states[WINED3DTEXSTA_MIPFILTER] = WINED3DTEXF_NONE;
143	update_minfilter = TRUE;
144	}
145
146	if (texture_impl->baseTexture.texture_rgb.states[WINED3DTEXSTA_MAGFILTER] != WINED3DTEXF_POINT)
147	{
148	texture_impl->baseTexture.texture_rgb.states[WINED3DTEXSTA_MAGFILTER] = WINED3DTEXF_POINT;
149	update_magfilter = TRUE;
150	}
151
152	if (texture_impl->baseTexture.bindCount)
153	{
154	WARN("Render targets should not be bound to a sampler\n");
155	IWineD3DDeviceImpl_MarkStateDirty(device, STATE_SAMPLER(texture_impl->baseTexture.sampler));
156	}
157
158	IWineD3DBaseTexture_Release((IWineD3DBaseTexture *)texture_impl);
159
160	if (update_minfilter \|\| update_magfilter)
161	{
162	GLenum target, bind_target;
163	GLint old_binding;
164
165	target = surface->texture_target;
166	if (target == GL_TEXTURE_2D)
167	{
168	bind_target = GL_TEXTURE_2D;
169	glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
170	}
171	else if (target == GL_TEXTURE_RECTANGLE_ARB)
172	{
173	bind_target = GL_TEXTURE_RECTANGLE_ARB;
174	glGetIntegerv(GL_TEXTURE_BINDING_RECTANGLE_ARB, &old_binding);
175	}
176	else
177	{
178	bind_target = GL_TEXTURE_CUBE_MAP_ARB;
179	glGetIntegerv(GL_TEXTURE_BINDING_CUBE_MAP_ARB, &old_binding);
180	}
181
182	glBindTexture(bind_target, surface->texture_name);
183	if (update_minfilter) glTexParameteri(bind_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
184	if (update_magfilter) glTexParameteri(bind_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
185	glBindTexture(bind_target, old_binding);
186	}
187
188	checkGLcall("apply_attachment_filter_states()");
189	}
190	}
191
192	/* GL locking is done by the caller */
193	void context_attach_depth_stencil_fbo(struct wined3d_context *context,
194	GLenum fbo_target, IWineD3DSurfaceImpl *depth_stencil, BOOL use_render_buffer)
195	{
196	const struct wined3d_gl_info *gl_info = context->gl_info;
197
198	TRACE("Attach depth stencil %p\n", depth_stencil);
199
200	if (depth_stencil)
201	{
202	DWORD format_flags = depth_stencil->resource.format_desc->Flags;
203
204	if (use_render_buffer && depth_stencil->current_renderbuffer)
205	{
206	if (format_flags & WINED3DFMT_FLAG_DEPTH)
207	{
208	gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_DEPTH_ATTACHMENT,
209	GL_RENDERBUFFER, depth_stencil->current_renderbuffer->id);
210	checkGLcall("glFramebufferRenderbuffer()");
211	}
212
213	if (format_flags & WINED3DFMT_FLAG_STENCIL)
214	{
215	gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_STENCIL_ATTACHMENT,
216	GL_RENDERBUFFER, depth_stencil->current_renderbuffer->id);
217	checkGLcall("glFramebufferRenderbuffer()");
218	}
219	}
220	else
221	{
222	surface_prepare_texture(depth_stencil, gl_info, FALSE);
223	context_apply_attachment_filter_states(depth_stencil);
224
225	if (format_flags & WINED3DFMT_FLAG_DEPTH)
226	{
227	gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT,
228	depth_stencil->texture_target, depth_stencil->texture_name,
229	depth_stencil->texture_level);
230	checkGLcall("glFramebufferTexture2D()");
231	}
232
233	if (format_flags & WINED3DFMT_FLAG_STENCIL)
234	{
235	gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT,
236	depth_stencil->texture_target, depth_stencil->texture_name,
237	depth_stencil->texture_level);
238	checkGLcall("glFramebufferTexture2D()");
239	}
240	}
241
242	if (!(format_flags & WINED3DFMT_FLAG_DEPTH))
243	{
244	gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
245	checkGLcall("glFramebufferTexture2D()");
246	}
247
248	if (!(format_flags & WINED3DFMT_FLAG_STENCIL))
249	{
250	gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
251	checkGLcall("glFramebufferTexture2D()");
252	}
253	}
254	else
255	{
256	gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
257	checkGLcall("glFramebufferTexture2D()");
258
259	gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
260	checkGLcall("glFramebufferTexture2D()");
261	}
262	}
263
264	/* GL locking is done by the caller */
265	void context_attach_surface_fbo(const struct wined3d_context *context,
266	GLenum fbo_target, DWORD idx, IWineD3DSurfaceImpl *surface)
267	{
268	const struct wined3d_gl_info *gl_info = context->gl_info;
269
270	TRACE("Attach surface %p to %u\n", surface, idx);
271
272	if (surface)
273	{
274	surface_prepare_texture(surface, gl_info, FALSE);
275	context_apply_attachment_filter_states(surface);
276
277	gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_COLOR_ATTACHMENT0 + idx, surface->texture_target,
278	surface->texture_name, surface->texture_level);
279	checkGLcall("glFramebufferTexture2D()");
280	}
281	else
282	{
283	gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_COLOR_ATTACHMENT0 + idx, GL_TEXTURE_2D, 0, 0);
284	checkGLcall("glFramebufferTexture2D()");
285	}
286	}
287
288	/* GL locking is done by the caller */
289	static void context_check_fbo_status(struct wined3d_context *context)
290	{
291	const struct wined3d_gl_info *gl_info = context->gl_info;
292	GLenum status;
293
294	status = gl_info->fbo_ops.glCheckFramebufferStatus(GL_FRAMEBUFFER);
295	if (status == GL_FRAMEBUFFER_COMPLETE)
296	{
297	TRACE("FBO complete\n");
298	} else {
299	IWineD3DSurfaceImpl *attachment;
300	unsigned int i;
301	FIXME("FBO status %s (%#x)\n", debug_fbostatus(status), status);
302
303	if (!context->current_fbo)
304	{
305	ERR("FBO 0 is incomplete, driver bug?\n");
306	return;
307	}
308
309	/* Dump the FBO attachments */
310	for (i = 0; i < gl_info->limits.buffers; ++i)
311	{
312	attachment = context->current_fbo->render_targets[i];
313	if (attachment)
314	{
315	FIXME("\tColor attachment %d: (%p) %s %ux%u\n",
316	i, attachment, debug_d3dformat(attachment->resource.format_desc->format),
317	attachment->pow2Width, attachment->pow2Height);
318	}
319	}
320	attachment = context->current_fbo->depth_stencil;
321	if (attachment)
322	{
323	FIXME("\tDepth attachment: (%p) %s %ux%u\n",
324	attachment, debug_d3dformat(attachment->resource.format_desc->format),
325	attachment->pow2Width, attachment->pow2Height);
326	}
327	}
328	}
329
330	static struct fbo_entry context_create_fbo_entry(struct wined3d_context context)
331	{
332	const struct wined3d_gl_info *gl_info = context->gl_info;
333	#ifdef VBOX_WITH_WDDM
334	IWineD3DDeviceImpl *device = context->device;
335	#else
336	IWineD3DDeviceImpl *device = context->swapchain->device;
337	#endif
338	struct fbo_entry *entry;
339
340	entry = HeapAlloc(GetProcessHeap(), 0, sizeof(*entry));
341	entry->render_targets = HeapAlloc(GetProcessHeap(), 0, gl_info->limits.buffers * sizeof(*entry->render_targets));
342	memcpy(entry->render_targets, device->render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets));
343	entry->depth_stencil = (IWineD3DSurfaceImpl *)device->stencilBufferTarget;
344	entry->attached = FALSE;
345	entry->id = 0;
346
347	return entry;
348	}
349
350	/* GL locking is done by the caller */
351	static void context_reuse_fbo_entry(struct wined3d_context context, struct fbo_entry entry)
352	{
353	const struct wined3d_gl_info *gl_info = context->gl_info;
354	#ifdef VBOX_WITH_WDDM
355	IWineD3DDeviceImpl *device = context->device;
356	#else
357	IWineD3DDeviceImpl *device = context->swapchain->device;
358	#endif
359
360	context_bind_fbo(context, GL_FRAMEBUFFER, &entry->id);
361	context_clean_fbo_attachments(gl_info);
362
363	memcpy(entry->render_targets, device->render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets));
364	entry->depth_stencil = (IWineD3DSurfaceImpl *)device->stencilBufferTarget;
365	entry->attached = FALSE;
366	}
367
368	/* GL locking is done by the caller */
369	static void context_destroy_fbo_entry(struct wined3d_context context, struct fbo_entry entry)
370	{
371	if (entry->id)
372	{
373	TRACE("Destroy FBO %d\n", entry->id);
374	context_destroy_fbo(context, &entry->id);
375	}
376	--context->fbo_entry_count;
377	list_remove(&entry->entry);
378	HeapFree(GetProcessHeap(), 0, entry->render_targets);
379	HeapFree(GetProcessHeap(), 0, entry);
380	}
381
382
383	/* GL locking is done by the caller */
384	static struct fbo_entry context_find_fbo_entry(struct wined3d_context context)
385	{
386	const struct wined3d_gl_info *gl_info = context->gl_info;
387	#ifdef VBOX_WITH_WDDM
388	IWineD3DDeviceImpl *device = context->device;
389	#else
390	IWineD3DDeviceImpl *device = context->swapchain->device;
391	#endif
392	struct fbo_entry *entry;
393
394	LIST_FOR_EACH_ENTRY(entry, &context->fbo_list, struct fbo_entry, entry)
395	{
396	if (!memcmp(entry->render_targets,
397	device->render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets))
398	&& entry->depth_stencil == (IWineD3DSurfaceImpl *)device->stencilBufferTarget)
399	{
400	list_remove(&entry->entry);
401	list_add_head(&context->fbo_list, &entry->entry);
402	return entry;
403	}
404	}
405
406	if (context->fbo_entry_count < WINED3D_MAX_FBO_ENTRIES)
407	{
408	entry = context_create_fbo_entry(context);
409	list_add_head(&context->fbo_list, &entry->entry);
410	++context->fbo_entry_count;
411	}
412	else
413	{
414	entry = LIST_ENTRY(list_tail(&context->fbo_list), struct fbo_entry, entry);
415	context_reuse_fbo_entry(context, entry);
416	list_remove(&entry->entry);
417	list_add_head(&context->fbo_list, &entry->entry);
418	}
419
420	return entry;
421	}
422
423	/* GL locking is done by the caller */
424	static void context_apply_fbo_entry(struct wined3d_context context, struct fbo_entry entry)
425	{
426	const struct wined3d_gl_info *gl_info = context->gl_info;
427	#ifdef VBOX_WITH_WDDM
428	IWineD3DDeviceImpl *device = context->device;
429	#else
430	IWineD3DDeviceImpl *device = context->swapchain->device;
431	#endif
432	unsigned int i;
433
434	context_bind_fbo(context, GL_FRAMEBUFFER, &entry->id);
435
436	if (!entry->attached)
437	{
438	/* Apply render targets */
439	for (i = 0; i < gl_info->limits.buffers; ++i)
440	{
441	IWineD3DSurfaceImpl render_target = (IWineD3DSurfaceImpl )device->render_targets[i];
442	context_attach_surface_fbo(context, GL_FRAMEBUFFER, i, render_target);
443	}
444
445	/* Apply depth targets */
446	if (device->stencilBufferTarget)
447	{
448	unsigned int w = ((IWineD3DSurfaceImpl *)device->render_targets[0])->pow2Width;
449	unsigned int h = ((IWineD3DSurfaceImpl *)device->render_targets[0])->pow2Height;
450
451	surface_set_compatible_renderbuffer(device->stencilBufferTarget, w, h);
452	}
453	context_attach_depth_stencil_fbo(context, GL_FRAMEBUFFER, (IWineD3DSurfaceImpl *)device->stencilBufferTarget, TRUE);
454
455	entry->attached = TRUE;
456	}
457	else
458	{
459	for (i = 0; i < gl_info->limits.buffers; ++i)
460	{
461	if (device->render_targets[i])
462	context_apply_attachment_filter_states((IWineD3DSurfaceImpl *)device->render_targets[i]);
463	}
464	if (device->stencilBufferTarget)
465	context_apply_attachment_filter_states((IWineD3DSurfaceImpl *)device->stencilBufferTarget);
466	}
467
468	for (i = 0; i < gl_info->limits.buffers; ++i)
469	{
470	if (device->render_targets[i])
471	device->draw_buffers[i] = GL_COLOR_ATTACHMENT0 + i;
472	else
473	device->draw_buffers[i] = GL_NONE;
474	}
475	}
476
477	/* GL locking is done by the caller */
478	static void context_apply_fbo_state(struct wined3d_context *context)
479	{
480	struct fbo_entry entry, entry2;
481
482	LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
483	{
484	context_destroy_fbo_entry(context, entry);
485	}
486
487	if (context->rebind_fbo)
488	{
489	context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
490	context->rebind_fbo = FALSE;
491	}
492
493	if (context->render_offscreen)
494	{
495	context->current_fbo = context_find_fbo_entry(context);
496	context_apply_fbo_entry(context, context->current_fbo);
497	} else {
498	context->current_fbo = NULL;
499	context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
500	}
501
502	#if defined(DEBUG) && !defined(DEBUG_misha)
503	context_check_fbo_status(context);
504	#endif
505	}
506
507	/* Context activation is done by the caller. */
508	void context_alloc_occlusion_query(struct wined3d_context context, struct wined3d_occlusion_query query)
509	{
510	const struct wined3d_gl_info *gl_info = context->gl_info;
511
512	if (context->free_occlusion_query_count)
513	{
514	query->id = context->free_occlusion_queries[--context->free_occlusion_query_count];
515	}
516	else
517	{
518	if (gl_info->supported[ARB_OCCLUSION_QUERY])
519	{
520	ENTER_GL();
521	GL_EXTCALL(glGenQueriesARB(1, &query->id));
522	checkGLcall("glGenQueriesARB");
523	LEAVE_GL();
524
525	TRACE("Allocated occlusion query %u in context %p.\n", query->id, context);
526	}
527	else
528	{
529	WARN("Occlusion queries not supported, not allocating query id.\n");
530	query->id = 0;
531	}
532	}
533
534	query->context = context;
535	list_add_head(&context->occlusion_queries, &query->entry);
536	}
537
538	void context_free_occlusion_query(struct wined3d_occlusion_query *query)
539	{
540	struct wined3d_context *context = query->context;
541
542	list_remove(&query->entry);
543	query->context = NULL;
544
545	if (context->free_occlusion_query_count >= context->free_occlusion_query_size - 1)
546	{
547	UINT new_size = context->free_occlusion_query_size << 1;
548	GLuint *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_occlusion_queries,
549	new_size * sizeof(*context->free_occlusion_queries));
550
551	if (!new_data)
552	{
553	ERR("Failed to grow free list, leaking query %u in context %p.\n", query->id, context);
554	return;
555	}
556
557	context->free_occlusion_query_size = new_size;
558	context->free_occlusion_queries = new_data;
559	}
560
561	context->free_occlusion_queries[context->free_occlusion_query_count++] = query->id;
562	}
563
564	/* Context activation is done by the caller. */
565	void context_alloc_event_query(struct wined3d_context context, struct wined3d_event_query query)
566	{
567	const struct wined3d_gl_info *gl_info = context->gl_info;
568
569	if (context->free_event_query_count)
570	{
571	query->object = context->free_event_queries[--context->free_event_query_count];
572	}
573	else
574	{
575	if (gl_info->supported[ARB_SYNC])
576	{
577	/* Using ARB_sync, not much to do here. */
578	query->object.sync = NULL;
579	TRACE("Allocated event query %p in context %p.\n", query->object.sync, context);
580	}
581	else if (gl_info->supported[APPLE_FENCE])
582	{
583	ENTER_GL();
584	GL_EXTCALL(glGenFencesAPPLE(1, &query->object.id));
585	checkGLcall("glGenFencesAPPLE");
586	LEAVE_GL();
587
588	TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
589	}
590	else if(gl_info->supported[NV_FENCE])
591	{
592	ENTER_GL();
593	GL_EXTCALL(glGenFencesNV(1, &query->object.id));
594	checkGLcall("glGenFencesNV");
595	LEAVE_GL();
596
597	TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
598	}
599	else
600	{
601	WARN("Event queries not supported, not allocating query id.\n");
602	query->object.id = 0;
603	}
604	}
605
606	query->context = context;
607	list_add_head(&context->event_queries, &query->entry);
608	}
609
610	void context_free_event_query(struct wined3d_event_query *query)
611	{
612	struct wined3d_context *context = query->context;
613
614	list_remove(&query->entry);
615	query->context = NULL;
616
617	if (context->free_event_query_count >= context->free_event_query_size - 1)
618	{
619	UINT new_size = context->free_event_query_size << 1;
620	union wined3d_gl_query_object *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_event_queries,
621	new_size * sizeof(*context->free_event_queries));
622
623	if (!new_data)
624	{
625	ERR("Failed to grow free list, leaking query %u in context %p.\n", query->object.id, context);
626	return;
627	}
628
629	context->free_event_query_size = new_size;
630	context->free_event_queries = new_data;
631	}
632
633	context->free_event_queries[context->free_event_query_count++] = query->object;
634	}
635
636	void context_resource_released(IWineD3DDevice iface, IWineD3DResource resource, WINED3DRESOURCETYPE type)
637	{
638	IWineD3DDeviceImpl This = (IWineD3DDeviceImpl )iface;
639	UINT i;
640
641	if (!This->d3d_initialized) return;
642
643	switch(type)
644	{
645	case WINED3DRTYPE_SURFACE:
646	{
647	for (i = 0; i < This->numContexts; ++i)
648	{
649	struct wined3d_context *context = This->contexts[i];
650	const struct wined3d_gl_info *gl_info = context->gl_info;
651	struct fbo_entry entry, entry2;
652
653	if (context->current_rt == (IWineD3DSurface *)resource) context->current_rt = NULL;
654
655	LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
656	{
657	UINT j;
658
659	if (entry->depth_stencil == (IWineD3DSurfaceImpl *)resource)
660	{
661	list_remove(&entry->entry);
662	list_add_head(&context->fbo_destroy_list, &entry->entry);
663	continue;
664	}
665
666	for (j = 0; j < gl_info->limits.buffers; ++j)
667	{
668	if (entry->render_targets[j] == (IWineD3DSurfaceImpl *)resource)
669	{
670	list_remove(&entry->entry);
671	list_add_head(&context->fbo_destroy_list, &entry->entry);
672	break;
673	}
674	}
675	}
676	}
677
678	break;
679	}
680
681	default:
682	break;
683	}
684	}
685
686	void context_surface_update(struct wined3d_context context, IWineD3DSurfaceImpl surface)
687	{
688	const struct wined3d_gl_info *gl_info = context->gl_info;
689	struct fbo_entry *entry = context->current_fbo;
690	unsigned int i;
691
692	if (!entry \|\| context->rebind_fbo) return;
693
694	for (i = 0; i < gl_info->limits.buffers; ++i)
695	{
696	if (surface == entry->render_targets[i])
697	{
698	TRACE("Updated surface %p is bound as color attachment %u to the current FBO.\n", surface, i);
699	context->rebind_fbo = TRUE;
700	return;
701	}
702	}
703
704	if (surface == entry->depth_stencil)
705	{
706	TRACE("Updated surface %p is bound as depth attachment to the current FBO.\n", surface);
707	context->rebind_fbo = TRUE;
708	}
709	}
710
711	static BOOL context_set_pixel_format(const struct wined3d_gl_info *gl_info, HDC dc, int format)
712	{
713	int current = GetPixelFormat(dc);
714
715	if (current == format) return TRUE;
716
717	if (!current)
718	{
719	if (!SetPixelFormat(dc, format, NULL))
720	{
721	ERR("Failed to set pixel format %d on device context %p, last error %#x.\n",
722	format, dc, GetLastError());
723	return FALSE;
724	}
725	return TRUE;
726	}
727
728	/* By default WGL doesn't allow pixel format adjustments but we need it
729	* here. For this reason there's a Wine specific wglSetPixelFormat()
730	* which allows us to set the pixel format multiple times. Only use it
731	* when really needed. */
732	if (gl_info->supported[WGL_WINE_PIXEL_FORMAT_PASSTHROUGH])
733	{
734	if (!GL_EXTCALL(wglSetPixelFormatWINE(dc, format, NULL)))
735	{
736	ERR("wglSetPixelFormatWINE failed to set pixel format %d on device context %p.\n",
737	format, dc);
738	return FALSE;
739	}
740	return TRUE;
741	}
742
743	/* OpenGL doesn't allow pixel format adjustments. Print an error and
744	* continue using the old format. There's a big chance that the old
745	* format works although with a performance hit and perhaps rendering
746	* errors. */
747	ERR("Unable to set pixel format %d on device context %p. Already using format %d.\n",
748	format, dc, current);
749	return TRUE;
750	}
751
752	static void context_update_window(struct wined3d_context *context
753	#ifdef VBOX_WITH_WDDM
754	, IWineD3DSwapChainImpl *swapchain
755	#endif
756	)
757	{
758	#ifdef VBOX_WITH_WDDM
759	TRACE("Updating context %p window from %p to %p.\n",
760	context, context->win_handle, swapchain->win_handle);
761	#else
762	TRACE("Updating context %p window from %p to %p.\n",
763	context, context->win_handle, context->swapchain->win_handle);
764	#endif
765
766	if (context->valid)
767	{
768	if (!ReleaseDC(context->win_handle, context->hdc))
769	{
770	ERR("Failed to release device context %p, last error %#x.\n",
771	context->hdc, GetLastError());
772	}
773	}
774	else context->valid = 1;
775
776	#ifdef VBOX_WITH_WDDM
777	context->win_handle = swapchain->win_handle;
778	context->currentSwapchain = swapchain;
779	#else
780	context->win_handle = context->swapchain->win_handle;
781	#endif
782	if (!(context->hdc = GetDC(context->win_handle)))
783	{
784	ERR("Failed to get a device context for window %p.\n", context->win_handle);
785	goto err;
786	}
787
788	if (!context_set_pixel_format(context->gl_info, context->hdc, context->pixel_format))
789	{
790	ERR("Failed to set pixel format %d on device context %p.\n",
791	context->pixel_format, context->hdc);
792	goto err;
793	}
794
795	if (!pwglMakeCurrent(context->hdc, context->glCtx))
796	{
797	ERR("Failed to make GL context %p current on device context %p, last error %#x.\n",
798	context->glCtx, context->hdc, GetLastError());
799	goto err;
800	}
801
802	return;
803
804	err:
805	context->valid = 0;
806	}
807
808	static void context_validate(struct wined3d_context *context
809	#ifdef VBOX_WITH_WDDM
810	, IWineD3DSwapChainImpl *swapchain
811	#endif
812	)
813	{
814	HWND wnd = WindowFromDC(context->hdc);
815
816	if (wnd != context->win_handle)
817	{
818	WARN("DC %p belongs to window %p instead of %p.\n",
819	context->hdc, wnd, context->win_handle);
820	context->valid = 0;
821	}
822
823	if (
824	#ifdef VBOX_WITH_WDDM
825	swapchain && context->win_handle != swapchain->win_handle
826	#else
827	context->win_handle != context->swapchain->win_handle
828	#endif
829	)
830	{
831	context_update_window(context
832	#ifdef VBOX_WITH_WDDM
833	, swapchain
834	#endif
835	);
836	}
837	}
838
839	static void context_destroy_gl_resources(struct wined3d_context *context)
840	{
841	const struct wined3d_gl_info *gl_info = context->gl_info;
842	struct wined3d_occlusion_query *occlusion_query;
843	struct wined3d_event_query *event_query;
844	struct fbo_entry entry, entry2;
845	HGLRC restore_ctx;
846	HDC restore_dc;
847	unsigned int i;
848
849	restore_ctx = pwglGetCurrentContext();
850	restore_dc = pwglGetCurrentDC();
851
852	context_validate(context
853	#ifdef VBOX_WITH_WDDM/* tmp work-around */
854	, NULL //(IWineD3DSwapChainImpl*)context->device->swapchains[context->device->NumberOfSwapChains-1]
855	#endif
856	);
857	if (context->valid && restore_ctx != context->glCtx) pwglMakeCurrent(context->hdc, context->glCtx);
858	else restore_ctx = NULL;
859
860	ENTER_GL();
861
862	LIST_FOR_EACH_ENTRY(occlusion_query, &context->occlusion_queries, struct wined3d_occlusion_query, entry)
863	{
864	if (context->valid && gl_info->supported[ARB_OCCLUSION_QUERY])
865	GL_EXTCALL(glDeleteQueriesARB(1, &occlusion_query->id));
866	occlusion_query->context = NULL;
867	}
868
869	LIST_FOR_EACH_ENTRY(event_query, &context->event_queries, struct wined3d_event_query, entry)
870	{
871	if (context->valid)
872	{
873	if (gl_info->supported[ARB_SYNC])
874	{
875	if (event_query->object.sync) GL_EXTCALL(glDeleteSync(event_query->object.sync));
876	}
877	else if (gl_info->supported[APPLE_FENCE]) GL_EXTCALL(glDeleteFencesAPPLE(1, &event_query->object.id));
878	else if (gl_info->supported[NV_FENCE]) GL_EXTCALL(glDeleteFencesNV(1, &event_query->object.id));
879	}
880	event_query->context = NULL;
881	}
882
883	LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
884	{
885	if (!context->valid) entry->id = 0;
886	context_destroy_fbo_entry(context, entry);
887	}
888
889	LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
890	{
891	if (!context->valid) entry->id = 0;
892	context_destroy_fbo_entry(context, entry);
893	}
894
895	if (context->valid)
896	{
897	if (context->src_fbo)
898	{
899	TRACE("Destroy src FBO %d\n", context->src_fbo);
900	context_destroy_fbo(context, &context->src_fbo);
901	}
902	if (context->dst_fbo)
903	{
904	TRACE("Destroy dst FBO %d\n", context->dst_fbo);
905	context_destroy_fbo(context, &context->dst_fbo);
906	}
907	if (context->dummy_arbfp_prog)
908	{
909	GL_EXTCALL(glDeleteProgramsARB(1, &context->dummy_arbfp_prog));
910	}
911
912	if (gl_info->supported[ARB_OCCLUSION_QUERY])
913	GL_EXTCALL(glDeleteQueriesARB(context->free_occlusion_query_count, context->free_occlusion_queries));
914
915	if (gl_info->supported[ARB_SYNC])
916	{
917	if (event_query->object.sync) GL_EXTCALL(glDeleteSync(event_query->object.sync));
918	}
919	else if (gl_info->supported[APPLE_FENCE])
920	{
921	for (i = 0; i < context->free_event_query_count; ++i)
922	{
923	GL_EXTCALL(glDeleteFencesAPPLE(1, &context->free_event_queries[i].id));
924	}
925	}
926	else if (gl_info->supported[NV_FENCE])
927	{
928	for (i = 0; i < context->free_event_query_count; ++i)
929	{
930	GL_EXTCALL(glDeleteFencesNV(1, &context->free_event_queries[i].id));
931	}
932	}
933
934	checkGLcall("context cleanup");
935	}
936
937	LEAVE_GL();
938
939	HeapFree(GetProcessHeap(), 0, context->free_occlusion_queries);
940	HeapFree(GetProcessHeap(), 0, context->free_event_queries);
941
942	if (restore_ctx)
943	{
944	if (!pwglMakeCurrent(restore_dc, restore_ctx))
945	{
946	DWORD err = GetLastError();
947	ERR("Failed to restore GL context %p on device context %p, last error %#x.\n",
948	restore_ctx, restore_dc, err);
949	}
950	}
951	else if (pwglGetCurrentContext() && !pwglMakeCurrent(NULL, NULL))
952	{
953	ERR("Failed to disable GL context.\n");
954	}
955
956	ReleaseDC(context->win_handle, context->hdc);
957
958	if (!pwglDeleteContext(context->glCtx))
959	{
960	DWORD err = GetLastError();
961	ERR("wglDeleteContext(%p) failed, last error %#x.\n", context->glCtx, err);
962	}
963	}
964
965	DWORD context_get_tls_idx(void)
966	{
967	return wined3d_context_tls_idx;
968	}
969
970	void context_set_tls_idx(DWORD idx)
971	{
972	wined3d_context_tls_idx = idx;
973	}
974
975	struct wined3d_context *context_get_current(void)
976	{
977	return TlsGetValue(wined3d_context_tls_idx);
978	}
979
980	BOOL context_set_current(struct wined3d_context *ctx)
981	{
982	struct wined3d_context *old = context_get_current();
983
984	if (old == ctx)
985	{
986	TRACE("Already using D3D context %p.\n", ctx);
987	return TRUE;
988	}
989
990	if (old)
991	{
992	if (old->destroyed)
993	{
994	TRACE("Switching away from destroyed context %p.\n", old);
995	context_destroy_gl_resources(old);
996	HeapFree(GetProcessHeap(), 0, old);
997	}
998	else
999	{
1000	old->current = 0;
1001	}
1002	}
1003
1004	if (ctx)
1005	{
1006	TRACE("Switching to D3D context %p, GL context %p, device context %p.\n", ctx, ctx->glCtx, ctx->hdc);
1007	if (!pwglMakeCurrent(ctx->hdc, ctx->glCtx))
1008	{
1009	DWORD err = GetLastError();
1010	ERR("Failed to make GL context %p current on device context %p, last error %#x.\n",
1011	ctx->glCtx, ctx->hdc, err);
1012	TlsSetValue(wined3d_context_tls_idx, NULL);
1013	return FALSE;
1014	}
1015	ctx->current = 1;
1016	}
1017	else if(pwglGetCurrentContext())
1018	{
1019	TRACE("Clearing current D3D context.\n");
1020	if (!pwglMakeCurrent(NULL, NULL))
1021	{
1022	DWORD err = GetLastError();
1023	ERR("Failed to clear current GL context, last error %#x.\n", err);
1024	TlsSetValue(wined3d_context_tls_idx, NULL);
1025	return FALSE;
1026	}
1027	}
1028
1029	return TlsSetValue(wined3d_context_tls_idx, ctx);
1030	}
1031
1032	void context_release(struct wined3d_context *context)
1033	{
1034	TRACE("Releasing context %p, level %u.\n", context, context->level);
1035
1036	if (WARN_ON(d3d))
1037	{
1038	if (!context->level)
1039	WARN("Context %p is not active.\n", context);
1040	else if (context != context_get_current())
1041	WARN("Context %p is not the current context.\n", context);
1042	}
1043
1044	if (!--context->level && context->restore_ctx)
1045	{
1046	TRACE("Restoring GL context %p on device context %p.\n", context->restore_ctx, context->restore_dc);
1047	if (!pwglMakeCurrent(context->restore_dc, context->restore_ctx))
1048	{
1049	DWORD err = GetLastError();
1050	ERR("Failed to restore GL context %p on device context %p, last error %#x.\n",
1051	context->restore_ctx, context->restore_dc, err);
1052	}
1053	context->restore_ctx = NULL;
1054	context->restore_dc = NULL;
1055	}
1056	}
1057
1058	static void context_enter(struct wined3d_context *context)
1059	{
1060	TRACE("Entering context %p, level %u.\n", context, context->level + 1);
1061
1062	if (!context->level++)
1063	{
1064	const struct wined3d_context *current_context = context_get_current();
1065	HGLRC current_gl = pwglGetCurrentContext();
1066
1067	if (current_gl && (!current_context \|\| current_context->glCtx != current_gl))
1068	{
1069	TRACE("Another GL context (%p on device context %p) is already current.\n",
1070	current_gl, pwglGetCurrentDC());
1071	context->restore_ctx = current_gl;
1072	context->restore_dc = pwglGetCurrentDC();
1073	}
1074	}
1075	}
1076
1077	/*****************************************************************************
1078	* Context_MarkStateDirty
1079	*
1080	* Marks a state in a context dirty. Only one context, opposed to
1081	* IWineD3DDeviceImpl_MarkStateDirty, which marks the state dirty in all
1082	* contexts
1083	*
1084	* Params:
1085	* context: Context to mark the state dirty in
1086	* state: State to mark dirty
1087	* StateTable: Pointer to the state table in use(for state grouping)
1088	*
1089	*****************************************************************************/
1090	static void Context_MarkStateDirty(struct wined3d_context context, DWORD state, const struct StateEntry StateTable)
1091	{
1092	DWORD rep = StateTable[state].representative;
1093	DWORD idx;
1094	BYTE shift;
1095
1096	if (isStateDirty(context, rep)) return;
1097
1098	context->dirtyArray[context->numDirtyEntries++] = rep;
1099	idx = rep / (sizeof(context->isStateDirty) CHAR_BIT);
1100	shift = rep & ((sizeof(context->isStateDirty) CHAR_BIT) - 1);
1101	context->isStateDirty[idx] \|= (1 << shift);
1102	}
1103
1104	/* This function takes care of WineD3D pixel format selection. */
1105	static int WineD3D_ChoosePixelFormat(IWineD3DDeviceImpl *This, HDC hdc,
1106	const struct wined3d_format_desc color_format_desc, const struct wined3d_format_desc ds_format_desc,
1107	BOOL auxBuffers, int numSamples, BOOL findCompatible)
1108	{
1109	int iPixelFormat=0;
1110	unsigned int matchtry;
1111	short redBits, greenBits, blueBits, alphaBits, colorBits;
1112	short depthBits=0, stencilBits=0;
1113
1114	struct match_type {
1115	BOOL require_aux;
1116	BOOL exact_alpha;
1117	BOOL exact_color;
1118	} matches[] = {
1119	/* First, try without alpha match buffers. MacOS supports aux buffers only
1120	* on A8R8G8B8, and we prefer better offscreen rendering over an alpha match.
1121	* Then try without aux buffers - this is the most common cause for not
1122	* finding a pixel format. Also some drivers(the open source ones)
1123	* only offer 32 bit ARB pixel formats. First try without an exact alpha
1124	* match, then try without an exact alpha and color match.
1125	*/
1126	{ TRUE, TRUE, TRUE },
1127	{ TRUE, FALSE, TRUE },
1128	{ FALSE, TRUE, TRUE },
1129	{ FALSE, FALSE, TRUE },
1130	{ TRUE, FALSE, FALSE },
1131	{ FALSE, FALSE, FALSE },
1132	};
1133
1134	int i = 0;
1135	int nCfgs = This->adapter->nCfgs;
1136
1137	TRACE("ColorFormat=%s, DepthStencilFormat=%s, auxBuffers=%d, numSamples=%d, findCompatible=%d\n",
1138	debug_d3dformat(color_format_desc->format), debug_d3dformat(ds_format_desc->format),
1139	auxBuffers, numSamples, findCompatible);
1140
1141	if (!getColorBits(color_format_desc, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits))
1142	{
1143	ERR("Unable to get color bits for format %s (%#x)!\n",
1144	debug_d3dformat(color_format_desc->format), color_format_desc->format);
1145	return 0;
1146	}
1147
1148	getDepthStencilBits(ds_format_desc, &depthBits, &stencilBits);
1149
1150	for(matchtry = 0; matchtry < (sizeof(matches) / sizeof(matches[0])) && !iPixelFormat; matchtry++) {
1151	for(i=0; i<nCfgs; i++) {
1152	BOOL exactDepthMatch = TRUE;
1153	WineD3D_PixelFormat *cfg = &This->adapter->cfgs[i];
1154
1155	/* For now only accept RGBA formats. Perhaps some day we will
1156	* allow floating point formats for pbuffers. */
1157	if(cfg->iPixelType != WGL_TYPE_RGBA_ARB)
1158	continue;
1159
1160	/* In window mode we need a window drawable format and double buffering. */
1161	if(!(cfg->windowDrawable && cfg->doubleBuffer))
1162	continue;
1163
1164	/* We like to have aux buffers in backbuffer mode */
1165	if(auxBuffers && !cfg->auxBuffers && matches[matchtry].require_aux)
1166	continue;
1167
1168	if(matches[matchtry].exact_color) {
1169	if(cfg->redSize != redBits)
1170	continue;
1171	if(cfg->greenSize != greenBits)
1172	continue;
1173	if(cfg->blueSize != blueBits)
1174	continue;
1175	} else {
1176	if(cfg->redSize < redBits)
1177	continue;
1178	if(cfg->greenSize < greenBits)
1179	continue;
1180	if(cfg->blueSize < blueBits)
1181	continue;
1182	}
1183	if(matches[matchtry].exact_alpha) {
1184	if(cfg->alphaSize != alphaBits)
1185	continue;
1186	} else {
1187	if(cfg->alphaSize < alphaBits)
1188	continue;
1189	}
1190
1191	/* We try to locate a format which matches our requirements exactly. In case of
1192	* depth it is no problem to emulate 16-bit using e.g. 24-bit, so accept that. */
1193	if(cfg->depthSize < depthBits)
1194	continue;
1195	else if(cfg->depthSize > depthBits)
1196	exactDepthMatch = FALSE;
1197
1198	/* In all cases make sure the number of stencil bits matches our requirements
1199	* even when we don't need stencil because it could affect performance EXCEPT
1200	* on cards which don't offer depth formats without stencil like the i915 drivers
1201	* on Linux. */
1202	if(stencilBits != cfg->stencilSize && !(This->adapter->brokenStencil && stencilBits <= cfg->stencilSize))
1203	continue;
1204
1205	/* Check multisampling support */
1206	if(cfg->numSamples != numSamples)
1207	continue;
1208
1209	/* When we have passed all the checks then we have found a format which matches our
1210	* requirements. Note that we only check for a limit number of capabilities right now,
1211	* so there can easily be a dozen of pixel formats which appear to be the 'same' but
1212	* can still differ in things like multisampling, stereo, SRGB and other flags.
1213	*/
1214
1215	/* Exit the loop as we have found a format :) */
1216	if(exactDepthMatch) {
1217	iPixelFormat = cfg->iPixelFormat;
1218	break;
1219	} else if(!iPixelFormat) {
1220	/* In the end we might end up with a format which doesn't exactly match our depth
1221	* requirements. Accept the first format we found because formats with higher iPixelFormat
1222	* values tend to have more extended capabilities (e.g. multisampling) which we don't need. */
1223	iPixelFormat = cfg->iPixelFormat;
1224	}
1225	}
1226	}
1227
1228	/* When findCompatible is set and no suitable format was found, let ChoosePixelFormat choose a pixel format in order not to crash. */
1229	if(!iPixelFormat && !findCompatible) {
1230	ERR("Can't find a suitable iPixelFormat\n");
1231	return FALSE;
1232	} else if(!iPixelFormat) {
1233	PIXELFORMATDESCRIPTOR pfd;
1234
1235	TRACE("Falling back to ChoosePixelFormat as we weren't able to find an exactly matching pixel format\n");
1236	/* PixelFormat selection */
1237	ZeroMemory(&pfd, sizeof(pfd));
1238	pfd.nSize = sizeof(pfd);
1239	pfd.nVersion = 1;
1240	pfd.dwFlags = PFD_SUPPORT_OPENGL \| PFD_DOUBLEBUFFER \| PFD_DRAW_TO_WINDOW;/PFD_GENERIC_ACCELERATED/
1241	pfd.iPixelType = PFD_TYPE_RGBA;
1242	pfd.cAlphaBits = alphaBits;
1243	pfd.cColorBits = colorBits;
1244	pfd.cDepthBits = depthBits;
1245	pfd.cStencilBits = stencilBits;
1246	pfd.iLayerType = PFD_MAIN_PLANE;
1247
1248	iPixelFormat = ChoosePixelFormat(hdc, &pfd);
1249	if(!iPixelFormat) {
1250	/* If this happens something is very wrong as ChoosePixelFormat barely fails */
1251	ERR("Can't find a suitable iPixelFormat\n");
1252	return FALSE;
1253	}
1254	}
1255
1256	TRACE("Found iPixelFormat=%d for ColorFormat=%s, DepthStencilFormat=%s\n",
1257	iPixelFormat, debug_d3dformat(color_format_desc->format), debug_d3dformat(ds_format_desc->format));
1258	return iPixelFormat;
1259	}
1260
1261
1262
1263
1264	/*****************************************************************************
1265	* context_create
1266	*
1267	* Creates a new context.
1268	*
1269	* * Params:
1270	* This: Device to activate the context for
1271	* target: Surface this context will render to
1272	* win_handle: handle to the window which we are drawing to
1273	* pPresentParameters: contains the pixelformats to use for onscreen rendering
1274	*
1275	*****************************************************************************/
1276	struct wined3d_context context_create(IWineD3DSwapChainImpl swapchain, IWineD3DSurfaceImpl *target,
1277	const struct wined3d_format_desc *ds_format_desc)
1278	{
1279	IWineD3DDeviceImpl *device = swapchain->device;
1280	const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
1281	const struct wined3d_format_desc *color_format_desc;
1282	struct wined3d_context *ret;
1283	PIXELFORMATDESCRIPTOR pfd;
1284	BOOL auxBuffers = FALSE;
1285	int numSamples = 0;
1286	int pixel_format;
1287	unsigned int s;
1288	DWORD state;
1289	HGLRC ctx;
1290	HDC hdc;
1291
1292	TRACE("swapchain %p, target %p, window %p.\n", swapchain, target, swapchain->win_handle);
1293
1294	ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ret));
1295	if (!ret)
1296	{
1297	ERR("Failed to allocate context memory.\n");
1298	return NULL;
1299	}
1300
1301	if (!(hdc = GetDC(swapchain->win_handle)))
1302	{
1303	ERR("Failed to retrieve a device context.\n");
1304	goto out;
1305	}
1306
1307	color_format_desc = target->resource.format_desc;
1308
1309	/* In case of ORM_BACKBUFFER, make sure to request an alpha component for
1310	* X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
1311	if (wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER)
1312	{
1313	auxBuffers = TRUE;
1314
1315	if (color_format_desc->format == WINED3DFMT_B4G4R4X4_UNORM)
1316	color_format_desc = getFormatDescEntry(WINED3DFMT_B4G4R4A4_UNORM, gl_info);
1317	else if (color_format_desc->format == WINED3DFMT_B8G8R8X8_UNORM)
1318	color_format_desc = getFormatDescEntry(WINED3DFMT_B8G8R8A8_UNORM, gl_info);
1319	}
1320
1321	/* DirectDraw supports 8bit paletted render targets and these are used by
1322	* old games like Starcraft and C&C. Most modern hardware doesn't support
1323	* 8bit natively so we perform some form of 8bit -> 32bit conversion. The
1324	* conversion (ab)uses the alpha component for storing the palette index.
1325	* For this reason we require a format with 8bit alpha, so request
1326	* A8R8G8B8. */
1327	if (color_format_desc->format == WINED3DFMT_P8_UINT)
1328	color_format_desc = getFormatDescEntry(WINED3DFMT_B8G8R8A8_UNORM, gl_info);
1329
1330	/* Retrieve the depth stencil format from the present parameters.
1331	* The choice of the proper format can give a nice performance boost
1332	* in case of GPU limited programs. */
1333	if (swapchain->presentParms.EnableAutoDepthStencil)
1334	{
1335	TRACE("Auto depth stencil enabled, using format %s.\n",
1336	debug_d3dformat(swapchain->presentParms.AutoDepthStencilFormat));
1337	ds_format_desc = getFormatDescEntry(swapchain->presentParms.AutoDepthStencilFormat, gl_info);
1338	}
1339
1340	/* D3D only allows multisampling when SwapEffect is set to WINED3DSWAPEFFECT_DISCARD. */
1341	if (swapchain->presentParms.MultiSampleType && (swapchain->presentParms.SwapEffect == WINED3DSWAPEFFECT_DISCARD))
1342	{
1343	if (!gl_info->supported[ARB_MULTISAMPLE])
1344	WARN("The application is requesting multisampling without support.\n");
1345	else
1346	{
1347	TRACE("Requesting multisample type %#x.\n", swapchain->presentParms.MultiSampleType);
1348	numSamples = swapchain->presentParms.MultiSampleType;
1349	}
1350	}
1351
1352	/* Try to find a pixel format which matches our requirements. */
1353	pixel_format = WineD3D_ChoosePixelFormat(device, hdc, color_format_desc, ds_format_desc,
1354	auxBuffers, numSamples, FALSE /* findCompatible */);
1355
1356	/* Try to locate a compatible format if we weren't able to find anything. */
1357	if (!pixel_format)
1358	{
1359	TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1360	pixel_format = WineD3D_ChoosePixelFormat(device, hdc, color_format_desc, ds_format_desc,
1361	auxBuffers, 0 /* numSamples /, TRUE / findCompatible */);
1362	}
1363
1364	/* If we still don't have a pixel format, something is very wrong as ChoosePixelFormat barely fails */
1365	if (!pixel_format)
1366	{
1367	ERR("Can't find a suitable pixel format.\n");
1368	goto out;
1369	}
1370
1371	DescribePixelFormat(hdc, pixel_format, sizeof(pfd), &pfd);
1372	if (!context_set_pixel_format(gl_info, hdc, pixel_format))
1373	{
1374	ERR("Failed to set pixel format %d on device context %p.\n", pixel_format, hdc);
1375	goto out;
1376	}
1377
1378	ctx = pwglCreateContext(hdc);
1379	if (device->numContexts)
1380	{
1381	if (!pwglShareLists(device->contexts[0]->glCtx, ctx))
1382	{
1383	DWORD err = GetLastError();
1384	ERR("wglShareLists(%p, %p) failed, last error %#x.\n",
1385	device->contexts[0]->glCtx, ctx, err);
1386	}
1387	}
1388
1389	if(!ctx) {
1390	ERR("Failed to create a WGL context\n");
1391	goto out;
1392	}
1393
1394	if (!device_context_add(device, ret))
1395	{
1396	ERR("Failed to add the newly created context to the context list\n");
1397	if (!pwglDeleteContext(ctx))
1398	{
1399	DWORD err = GetLastError();
1400	ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, err);
1401	}
1402	goto out;
1403	}
1404
1405	ret->gl_info = gl_info;
1406
1407	/* Mark all states dirty to force a proper initialization of the states
1408	* on the first use of the context. */
1409	for (state = 0; state <= STATE_HIGHEST; ++state)
1410	{
1411	if (device->StateTable[state].representative)
1412	Context_MarkStateDirty(ret, state, device->StateTable);
1413	}
1414
1415	#ifdef VBOX_WITH_WDDM
1416	ret->device = device;
1417	ret->currentSwapchain = swapchain;
1418	#else
1419	ret->swapchain = swapchain;
1420	#endif
1421	ret->current_rt = (IWineD3DSurface *)target;
1422	ret->tid = GetCurrentThreadId();
1423
1424	ret->render_offscreen = surface_is_offscreen((IWineD3DSurface *) target);
1425	ret->draw_buffer_dirty = TRUE;
1426	ret->valid = 1;
1427
1428	ret->glCtx = ctx;
1429	ret->win_handle = swapchain->win_handle;
1430	ret->hdc = hdc;
1431	ret->pixel_format = pixel_format;
1432
1433	if (device->shader_backend->shader_dirtifyable_constants((IWineD3DDevice *)device))
1434	{
1435	/* Create the dirty constants array and initialize them to dirty */
1436	ret->vshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
1437	sizeof(ret->vshader_const_dirty) device->d3d_vshader_constantF);
1438	ret->pshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
1439	sizeof(ret->pshader_const_dirty) device->d3d_pshader_constantF);
1440	memset(ret->vshader_const_dirty, 1,
1441	sizeof(ret->vshader_const_dirty) device->d3d_vshader_constantF);
1442	memset(ret->pshader_const_dirty, 1,
1443	sizeof(ret->pshader_const_dirty) device->d3d_pshader_constantF);
1444	}
1445
1446	ret->free_occlusion_query_size = 4;
1447	ret->free_occlusion_queries = HeapAlloc(GetProcessHeap(), 0,
1448	ret->free_occlusion_query_size * sizeof(*ret->free_occlusion_queries));
1449	if (!ret->free_occlusion_queries) goto out;
1450
1451	list_init(&ret->occlusion_queries);
1452
1453	ret->free_event_query_size = 4;
1454	ret->free_event_queries = HeapAlloc(GetProcessHeap(), 0,
1455	ret->free_event_query_size * sizeof(*ret->free_event_queries));
1456	if (!ret->free_event_queries) goto out;
1457
1458	list_init(&ret->event_queries);
1459
1460	TRACE("Successfully created new context %p\n", ret);
1461
1462	list_init(&ret->fbo_list);
1463	list_init(&ret->fbo_destroy_list);
1464
1465	context_enter(ret);
1466
1467	/* Set up the context defaults */
1468	if (!context_set_current(ret))
1469	{
1470	ERR("Cannot activate context to set up defaults\n");
1471	context_release(ret);
1472	goto out;
1473	}
1474
1475	ENTER_GL();
1476
1477	glGetIntegerv(GL_AUX_BUFFERS, &ret->aux_buffers);
1478
1479	TRACE("Setting up the screen\n");
1480	/* Clear the screen */
1481	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
1482	checkGLcall("glClearColor");
1483	glClearIndex(0);
1484	glClearDepth(1);
1485	glClearStencil(0xffff);
1486
1487	checkGLcall("glClear");
1488
1489	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
1490	checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
1491
1492	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
1493	checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
1494
1495	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1496	checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
1497
1498	glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);
1499	checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);");
1500	glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);
1501	checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);");
1502
1503	if (gl_info->supported[APPLE_CLIENT_STORAGE])
1504	{
1505	/* Most textures will use client storage if supported. Exceptions are non-native power of 2 textures
1506	* and textures in DIB sections(due to the memory protection).
1507	*/
1508	glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
1509	checkGLcall("glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE)");
1510	}
1511	if (gl_info->supported[ARB_VERTEX_BLEND])
1512	{
1513	/* Direct3D always uses n-1 weights for n world matrices and uses 1 - sum for the last one
1514	* this is equal to GL_WEIGHT_SUM_UNITY_ARB. Enabling it doesn't do anything unless
1515	* GL_VERTEX_BLEND_ARB isn't enabled too
1516	*/
1517	glEnable(GL_WEIGHT_SUM_UNITY_ARB);
1518	checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
1519	}
1520	if (gl_info->supported[NV_TEXTURE_SHADER2])
1521	{
1522	/* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
1523	* the previous texture where to source the offset from is always unit - 1.
1524	*/
1525	for (s = 1; s < gl_info->limits.textures; ++s)
1526	{
1527	GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + s));
1528	glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
1529	checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...");
1530	}
1531	}
1532	if (gl_info->supported[ARB_FRAGMENT_PROGRAM])
1533	{
1534	/* MacOS(radeon X1600 at least, but most likely others too) refuses to draw if GLSL and ARBFP are
1535	* enabled, but the currently bound arbfp program is 0. Enabling ARBFP with prog 0 is invalid, but
1536	* GLSL should bypass this. This causes problems in programs that never use the fixed function pipeline,
1537	* because the ARBFP extension is enabled by the ARBFP pipeline at context creation, but no program
1538	* is ever assigned.
1539	*
1540	* So make sure a program is assigned to each context. The first real ARBFP use will set a different
1541	* program and the dummy program is destroyed when the context is destroyed.
1542	*/
1543	const char *dummy_program =
1544	"!!ARBfp1.0\n"
1545	"MOV result.color, fragment.color.primary;\n"
1546	"END\n";
1547	GL_EXTCALL(glGenProgramsARB(1, &ret->dummy_arbfp_prog));
1548	GL_EXTCALL(glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, ret->dummy_arbfp_prog));
1549	GL_EXTCALL(glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(dummy_program), dummy_program));
1550	}
1551
1552	for (s = 0; s < gl_info->limits.point_sprite_units; ++s)
1553	{
1554	GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + s));
1555	glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
1556	checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)");
1557	}
1558
1559	if (gl_info->supported[ARB_PROVOKING_VERTEX])
1560	{
1561	GL_EXTCALL(glProvokingVertex(GL_FIRST_VERTEX_CONVENTION));
1562	}
1563	else if (gl_info->supported[EXT_PROVOKING_VERTEX])
1564	{
1565	GL_EXTCALL(glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT));
1566	}
1567
1568	#ifdef VBOX_WITH_WDDM
1569	GL_EXTCALL(glChromiumParameteriCR(GL_SHARE_CONTEXT_RESOURCES_CR, GL_TRUE));
1570	#endif
1571
1572	LEAVE_GL();
1573
1574	device->frag_pipe->enable_extension((IWineD3DDevice *)device, TRUE);
1575
1576	TRACE("Created context %p.\n", ret);
1577
1578	return ret;
1579
1580	out:
1581	HeapFree(GetProcessHeap(), 0, ret->free_event_queries);
1582	HeapFree(GetProcessHeap(), 0, ret->free_occlusion_queries);
1583	HeapFree(GetProcessHeap(), 0, ret->pshader_const_dirty);
1584	HeapFree(GetProcessHeap(), 0, ret->vshader_const_dirty);
1585	HeapFree(GetProcessHeap(), 0, ret);
1586	return NULL;
1587	}
1588
1589	#ifdef VBOX_WITH_WDDM
1590	static void context_setup_target(IWineD3DDeviceImpl device, struct wined3d_context context, IWineD3DSurface *target);
1591	static void context_apply_state(struct wined3d_context context, IWineD3DDeviceImpl device, enum ContextUsage usage);
1592
1593	BOOL context_acquire_context(struct wined3d_context * context, IWineD3DSurface *target, enum ContextUsage usage, BOOL bReValidate)
1594	{
1595	IWineD3DDeviceImpl *device = context->device;
1596	struct wined3d_context *current_context = context_get_current();
1597	if (bReValidate)
1598	{
1599	IWineD3DSwapChain *swapchain = NULL;
1600	if (target && SUCCEEDED(IWineD3DSurface_GetContainer(target, &IID_IWineD3DSwapChain, (void **)&swapchain))) {
1601	context_validate(current_context, (IWineD3DSwapChainImpl*)swapchain);
1602	IWineD3DSwapChain_Release(swapchain);
1603	}
1604	else {
1605	/* tmp work-around */
1606	context_validate(current_context,
1607	NULL //(IWineD3DSwapChainImpl*)current_context->device->swapchains[current_context->device->NumberOfSwapChains-1]
1608	);
1609	}
1610	}
1611	context_setup_target(device, context, target);
1612	context_enter(context);
1613	// Assert(context->valid);
1614	if (!context->valid) return FALSE;
1615
1616	if (context != current_context)
1617	{
1618	if (!context_set_current(context)) ERR("Failed to activate the new context.\n");
1619	else device->frag_pipe->enable_extension((IWineD3DDevice *)device, !context->last_was_blit);
1620
1621	if (context->vshader_const_dirty)
1622	{
1623	memset(context->vshader_const_dirty, 1,
1624	sizeof(context->vshader_const_dirty) device->d3d_vshader_constantF);
1625	device->highest_dirty_vs_const = device->d3d_vshader_constantF;
1626	}
1627	if (context->pshader_const_dirty)
1628	{
1629	memset(context->pshader_const_dirty, 1,
1630	sizeof(context->pshader_const_dirty) device->d3d_pshader_constantF);
1631	device->highest_dirty_ps_const = device->d3d_pshader_constantF;
1632	}
1633	}
1634	else if (context->restore_ctx)
1635	{
1636	if (!pwglMakeCurrent(context->hdc, context->glCtx))
1637	{
1638	DWORD err = GetLastError();
1639	ERR("Failed to make GL context %p current on device context %p, last error %#x.\n",
1640	context->hdc, context->glCtx, err);
1641	}
1642	}
1643
1644	context_apply_state(context, device, usage);
1645
1646	return TRUE;
1647	}
1648
1649	struct wined3d_context context_find_create(IWineD3DDeviceImpl device, IWineD3DSwapChainImpl swapchain, IWineD3DSurfaceImpl target,
1650	const struct wined3d_format_desc *ds_format_desc)
1651	{
1652	UINT i;
1653	DWORD tid = GetCurrentThreadId();
1654	struct wined3d_context *context = NULL;
1655
1656	for(i = 0 ; i < device->numContexts ; i ++)
1657	{
1658	if(device->contexts[i]->tid == tid) {
1659	context = device->contexts[i];
1660	break;
1661	}
1662	}
1663
1664	if (!context)
1665	{
1666	Assert(!device->NumberOfSwapChains);
1667	context = context_create(swapchain, target, ds_format_desc);
1668	}
1669	else
1670	{
1671	if(!context_acquire_context(context, (IWineD3DSurface*)target, CTXUSAGE_RESOURCELOAD, TRUE))
1672	{
1673	ERR("Failed to acquire the context.\n");
1674	Assert(0);
1675	Assert(!context->valid);
1676	context = NULL;
1677	}
1678	else
1679	{
1680	Assert(context->valid);
1681	}
1682	}
1683
1684	return context;
1685	}
1686	#endif
1687
1688	/*****************************************************************************
1689	* context_destroy
1690	*
1691	* Destroys a wined3d context
1692	*
1693	* Params:
1694	* This: Device to activate the context for
1695	* context: Context to destroy
1696	*
1697	*****************************************************************************/
1698	void context_destroy(IWineD3DDeviceImpl This, struct wined3d_context context)
1699	{
1700	BOOL destroy;
1701
1702	TRACE("Destroying ctx %p\n", context);
1703
1704	if (context->tid == GetCurrentThreadId() \|\| !context->current)
1705	{
1706	context_destroy_gl_resources(context);
1707	TlsSetValue(wined3d_context_tls_idx, NULL);
1708	destroy = TRUE;
1709	}
1710	else
1711	{
1712	context->destroyed = 1;
1713	destroy = FALSE;
1714	}
1715
1716	HeapFree(GetProcessHeap(), 0, context->vshader_const_dirty);
1717	HeapFree(GetProcessHeap(), 0, context->pshader_const_dirty);
1718	device_context_remove(This, context);
1719	if (destroy) HeapFree(GetProcessHeap(), 0, context);
1720	}
1721
1722	/* GL locking is done by the caller */
1723	static inline void set_blit_dimension(UINT width, UINT height) {
1724	glMatrixMode(GL_PROJECTION);
1725	checkGLcall("glMatrixMode(GL_PROJECTION)");
1726	glLoadIdentity();
1727	checkGLcall("glLoadIdentity()");
1728	glOrtho(0, width, height, 0, 0.0, -1.0);
1729	checkGLcall("glOrtho");
1730	glViewport(0, 0, width, height);
1731	checkGLcall("glViewport");
1732	}
1733
1734	/*****************************************************************************
1735	* SetupForBlit
1736	*
1737	* Sets up a context for DirectDraw blitting.
1738	* All texture units are disabled, texture unit 0 is set as current unit
1739	* fog, lighting, blending, alpha test, z test, scissor test, culling disabled
1740	* color writing enabled for all channels
1741	* register combiners disabled, shaders disabled
1742	* world matrix is set to identity, texture matrix 0 too
1743	* projection matrix is setup for drawing screen coordinates
1744	*
1745	* Params:
1746	* This: Device to activate the context for
1747	* context: Context to setup
1748	*
1749	*****************************************************************************/
1750	/* Context activation is done by the caller. */
1751	static void SetupForBlit(IWineD3DDeviceImpl This, struct wined3d_context context)
1752	{
1753	int i;
1754	const struct StateEntry *StateTable = This->StateTable;
1755	const struct wined3d_gl_info *gl_info = context->gl_info;
1756	UINT width = ((IWineD3DSurfaceImpl *)context->current_rt)->currentDesc.Width;
1757	UINT height = ((IWineD3DSurfaceImpl *)context->current_rt)->currentDesc.Height;
1758	DWORD sampler;
1759
1760	TRACE("Setting up context %p for blitting\n", context);
1761	if(context->last_was_blit) {
1762	if(context->blit_w != width \|\| context->blit_h != height) {
1763	ENTER_GL();
1764	set_blit_dimension(width, height);
1765	LEAVE_GL();
1766	context->blit_w = width; context->blit_h = height;
1767	/* No need to dirtify here, the states are still dirtified because they weren't
1768	* applied since the last SetupForBlit call. Otherwise last_was_blit would not
1769	* be set
1770	*/
1771	}
1772	TRACE("Context is already set up for blitting, nothing to do\n");
1773	return;
1774	}
1775	context->last_was_blit = TRUE;
1776
1777	/* TODO: Use a display list */
1778
1779	/* Disable shaders */
1780	ENTER_GL();
1781	This->shader_backend->shader_select(context, FALSE, FALSE);
1782	LEAVE_GL();
1783
1784	Context_MarkStateDirty(context, STATE_VSHADER, StateTable);
1785	Context_MarkStateDirty(context, STATE_PIXELSHADER, StateTable);
1786
1787	/* Call ENTER_GL() once for all gl calls below. In theory we should not call
1788	* helper functions in between gl calls. This function is full of Context_MarkStateDirty
1789	* which can safely be called from here, we only lock once instead locking/unlocking
1790	* after each GL call.
1791	*/
1792	ENTER_GL();
1793
1794	/* Disable all textures. The caller can then bind a texture it wants to blit
1795	* from
1796	*
1797	* The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
1798	* function texture unit. No need to care for higher samplers
1799	*/
1800	for (i = gl_info->limits.textures - 1; i > 0 ; --i)
1801	{
1802	sampler = This->rev_tex_unit_map[i];
1803	GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + i));
1804	checkGLcall("glActiveTextureARB");
1805
1806	if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1807	{
1808	glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1809	checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1810	}
1811	glDisable(GL_TEXTURE_3D);
1812	checkGLcall("glDisable GL_TEXTURE_3D");
1813	if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1814	{
1815	glDisable(GL_TEXTURE_RECTANGLE_ARB);
1816	checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1817	}
1818	glDisable(GL_TEXTURE_2D);
1819	checkGLcall("glDisable GL_TEXTURE_2D");
1820
1821	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1822	checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
1823
1824	if (sampler != WINED3D_UNMAPPED_STAGE)
1825	{
1826	if (sampler < MAX_TEXTURES) {
1827	Context_MarkStateDirty(context, STATE_TEXTURESTAGE(sampler, WINED3DTSS_COLOROP), StateTable);
1828	}
1829	Context_MarkStateDirty(context, STATE_SAMPLER(sampler), StateTable);
1830	}
1831	}
1832	GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
1833	checkGLcall("glActiveTextureARB");
1834
1835	sampler = This->rev_tex_unit_map[0];
1836
1837	if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1838	{
1839	glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1840	checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1841	}
1842	glDisable(GL_TEXTURE_3D);
1843	checkGLcall("glDisable GL_TEXTURE_3D");
1844	if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1845	{
1846	glDisable(GL_TEXTURE_RECTANGLE_ARB);
1847	checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1848	}
1849	glDisable(GL_TEXTURE_2D);
1850	checkGLcall("glDisable GL_TEXTURE_2D");
1851
1852	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1853
1854	glMatrixMode(GL_TEXTURE);
1855	checkGLcall("glMatrixMode(GL_TEXTURE)");
1856	glLoadIdentity();
1857	checkGLcall("glLoadIdentity()");
1858
1859	if (gl_info->supported[EXT_TEXTURE_LOD_BIAS])
1860	{
1861	glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
1862	GL_TEXTURE_LOD_BIAS_EXT,
1863	0.0f);
1864	checkGLcall("glTexEnvi GL_TEXTURE_LOD_BIAS_EXT ...");
1865	}
1866
1867	if (sampler != WINED3D_UNMAPPED_STAGE)
1868	{
1869	if (sampler < MAX_TEXTURES) {
1870	Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_TEXTURE0 + sampler), StateTable);
1871	Context_MarkStateDirty(context, STATE_TEXTURESTAGE(sampler, WINED3DTSS_COLOROP), StateTable);
1872	}
1873	Context_MarkStateDirty(context, STATE_SAMPLER(sampler), StateTable);
1874	}
1875
1876	/* Other misc states */
1877	glDisable(GL_ALPHA_TEST);
1878	checkGLcall("glDisable(GL_ALPHA_TEST)");
1879	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHATESTENABLE), StateTable);
1880	glDisable(GL_LIGHTING);
1881	checkGLcall("glDisable GL_LIGHTING");
1882	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_LIGHTING), StateTable);
1883	glDisable(GL_DEPTH_TEST);
1884	checkGLcall("glDisable GL_DEPTH_TEST");
1885	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ZENABLE), StateTable);
1886	glDisableWINE(GL_FOG);
1887	checkGLcall("glDisable GL_FOG");
1888	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_FOGENABLE), StateTable);
1889	glDisable(GL_BLEND);
1890	checkGLcall("glDisable GL_BLEND");
1891	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
1892	glDisable(GL_CULL_FACE);
1893	checkGLcall("glDisable GL_CULL_FACE");
1894	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CULLMODE), StateTable);
1895	glDisable(GL_STENCIL_TEST);
1896	checkGLcall("glDisable GL_STENCIL_TEST");
1897	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_STENCILENABLE), StateTable);
1898	glDisable(GL_SCISSOR_TEST);
1899	checkGLcall("glDisable GL_SCISSOR_TEST");
1900	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE), StateTable);
1901	if (gl_info->supported[ARB_POINT_SPRITE])
1902	{
1903	glDisable(GL_POINT_SPRITE_ARB);
1904	checkGLcall("glDisable GL_POINT_SPRITE_ARB");
1905	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_POINTSPRITEENABLE), StateTable);
1906	}
1907	glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
1908	checkGLcall("glColorMask");
1909	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE), StateTable);
1910	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE1), StateTable);
1911	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE2), StateTable);
1912	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE3), StateTable);
1913	if (gl_info->supported[EXT_SECONDARY_COLOR])
1914	{
1915	glDisable(GL_COLOR_SUM_EXT);
1916	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SPECULARENABLE), StateTable);
1917	checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
1918	}
1919
1920	/* Setup transforms */
1921	glMatrixMode(GL_MODELVIEW);
1922	checkGLcall("glMatrixMode(GL_MODELVIEW)");
1923	glLoadIdentity();
1924	checkGLcall("glLoadIdentity()");
1925	Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_WORLDMATRIX(0)), StateTable);
1926
1927	context->last_was_rhw = TRUE;
1928	Context_MarkStateDirty(context, STATE_VDECL, StateTable); /* because of last_was_rhw = TRUE */
1929
1930	glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
1931	glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
1932	glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
1933	glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
1934	glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
1935	glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
1936	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CLIPPING), StateTable);
1937
1938	set_blit_dimension(width, height);
1939
1940	LEAVE_GL();
1941
1942	context->blit_w = width; context->blit_h = height;
1943	Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
1944	Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_PROJECTION), StateTable);
1945
1946
1947	This->frag_pipe->enable_extension((IWineD3DDevice *) This, FALSE);
1948	}
1949
1950	/*****************************************************************************
1951	* findThreadContextForSwapChain
1952	*
1953	* Searches a swapchain for all contexts and picks one for the thread tid.
1954	* If none can be found the swapchain is requested to create a new context
1955	*
1956	*****************************************************************************/
1957	static struct wined3d_context findThreadContextForSwapChain(IWineD3DSwapChain swapchain, DWORD tid)
1958	{
1959	unsigned int i;
1960	#ifdef VBOX_WITH_WDDM
1961	IWineD3DDeviceImpl device = ((IWineD3DSwapChainImpl)swapchain)->device;
1962	for (i = 0; i < device->numContexts; ++i)
1963	{
1964	if (device->contexts[i]->tid == tid)
1965	return device->contexts[i];
1966	}
1967	#else
1968	for(i = 0; i < ((IWineD3DSwapChainImpl *) swapchain)->num_contexts; i++) {
1969	if(((IWineD3DSwapChainImpl *) swapchain)->context[i]->tid == tid) {
1970	return ((IWineD3DSwapChainImpl *) swapchain)->context[i];
1971	}
1972	}
1973	#endif
1974
1975	/* Create a new context for the thread */
1976	return swapchain_create_context_for_thread(swapchain);
1977	}
1978
1979	/*****************************************************************************
1980	* FindContext
1981	*
1982	* Finds a context for the current render target and thread
1983	*
1984	* Parameters:
1985	* target: Render target to find the context for
1986	* tid: Thread to activate the context for
1987	*
1988	* Returns: The needed context
1989	*
1990	*****************************************************************************/
1991	static struct wined3d_context FindContext(IWineD3DDeviceImpl This, IWineD3DSurface *target)
1992	{
1993	IWineD3DSwapChain *swapchain = NULL;
1994	struct wined3d_context *current_context = context_get_current();
1995	DWORD tid = GetCurrentThreadId();
1996	struct wined3d_context *context;
1997
1998	if (current_context && current_context->destroyed) current_context = NULL;
1999
2000	if (!target)
2001	{
2002	if (current_context
2003	&& current_context->current_rt
2004	#ifdef VBOX_WITH_WDDM
2005	&& current_context->device == This
2006	#else
2007	&& current_context->swapchain->device == This
2008	#endif
2009	)
2010	{
2011	target = current_context->current_rt;
2012	}
2013	else
2014	{
2015	#ifdef VBOX_WITH_WDDM
2016	/* tmp work-around */
2017	IWineD3DSwapChainImpl swapchain = (IWineD3DSwapChainImpl )This->swapchains[This->NumberOfSwapChains-1];
2018	#else
2019	IWineD3DSwapChainImpl swapchain = (IWineD3DSwapChainImpl )This->swapchains[0];
2020	#endif
2021	if (swapchain->backBuffer) target = swapchain->backBuffer[0];
2022	else target = swapchain->frontBuffer;
2023	}
2024	}
2025
2026	if (current_context && current_context->current_rt == target)
2027	{
2028	#ifdef VBOX_WITH_WDDM
2029	IWineD3DSwapChain *swapchain = NULL;
2030	if (SUCCEEDED(IWineD3DSurface_GetContainer(target, &IID_IWineD3DSwapChain, (void **)&swapchain))) {
2031	context_validate(current_context, (IWineD3DSwapChainImpl*)swapchain);
2032	IWineD3DSwapChain_Release(swapchain);
2033	}
2034	else {
2035	/* tmp work-around */
2036	context_validate(current_context,
2037	NULL //(IWineD3DSwapChainImpl*)current_context->device->swapchains[current_context->device->NumberOfSwapChains-1]
2038	);
2039	}
2040	#else
2041	context_validate(current_context);
2042	#endif
2043	return current_context;
2044	}
2045
2046	if (SUCCEEDED(IWineD3DSurface_GetContainer(target, &IID_IWineD3DSwapChain, (void **)&swapchain))) {
2047	TRACE("Rendering onscreen\n");
2048
2049	context = findThreadContextForSwapChain(swapchain, tid);
2050	#ifdef VBOX_WITH_WDDM
2051	context_validate(context, (IWineD3DSwapChainImpl*)swapchain);
2052	#endif
2053	IWineD3DSwapChain_Release(swapchain);
2054	}
2055	else
2056	{
2057	TRACE("Rendering offscreen\n");
2058
2059	/* Stay with the currently active context. */
2060	if (current_context
2061	#ifdef VBOX_WITH_WDDM
2062	&& current_context->device == This
2063	#else
2064	&& current_context->swapchain->device == This
2065	#endif
2066	)
2067	{
2068	context = current_context;
2069	}
2070	else
2071	{
2072	/* This may happen if the app jumps straight into offscreen rendering
2073	* Start using the context of the primary swapchain. tid == 0 is no problem
2074	* for findThreadContextForSwapChain.
2075	*
2076	* Can also happen on thread switches - in that case findThreadContextForSwapChain
2077	* is perfect to call. */
2078	#ifdef VBOX_WITH_WDDM /* tmp work-around */
2079	context = findThreadContextForSwapChain(This->swapchains[This->NumberOfSwapChains-1], tid);
2080	#else
2081	context = findThreadContextForSwapChain(This->swapchains[0], tid);
2082	#endif
2083	}
2084	#ifdef VBOX_WITH_WDDM
2085	context_validate(context,
2086	NULL //(IWineD3DSwapChainImpl)This->swapchains[This->NumberOfSwapChains-1] / tmp work-around */
2087	);
2088	#endif
2089	}
2090
2091	#ifndef VBOX_WITH_WDDM
2092	context_validate(context);
2093	#endif
2094
2095	return context;
2096	}
2097
2098	/* Context activation is done by the caller. */
2099	static void context_apply_draw_buffer(struct wined3d_context *context, BOOL blit)
2100	{
2101	const struct wined3d_gl_info *gl_info = context->gl_info;
2102	IWineD3DSurface *rt = context->current_rt;
2103	IWineD3DDeviceImpl *device;
2104
2105	device = ((IWineD3DSurfaceImpl *)rt)->resource.device;
2106	if (!surface_is_offscreen(rt))
2107	{
2108	ENTER_GL();
2109	glDrawBuffer(surface_get_gl_buffer(rt));
2110	checkGLcall("glDrawBuffers()");
2111	LEAVE_GL();
2112	}
2113	else
2114	{
2115	ENTER_GL();
2116	if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2117	{
2118	if (!blit)
2119	{
2120	if (gl_info->supported[ARB_DRAW_BUFFERS])
2121	{
2122	GL_EXTCALL(glDrawBuffersARB(gl_info->limits.buffers, device->draw_buffers));
2123	checkGLcall("glDrawBuffers()");
2124	}
2125	else
2126	{
2127	glDrawBuffer(device->draw_buffers[0]);
2128	checkGLcall("glDrawBuffer()");
2129	}
2130	} else {
2131	glDrawBuffer(GL_COLOR_ATTACHMENT0);
2132	checkGLcall("glDrawBuffer()");
2133	}
2134	}
2135	else
2136	{
2137	glDrawBuffer(device->offscreenBuffer);
2138	checkGLcall("glDrawBuffer()");
2139	}
2140	LEAVE_GL();
2141	}
2142	}
2143
2144	/* GL locking is done by the caller. */
2145	void context_set_draw_buffer(struct wined3d_context *context, GLenum buffer)
2146	{
2147	glDrawBuffer(buffer);
2148	checkGLcall("glDrawBuffer()");
2149	context->draw_buffer_dirty = TRUE;
2150	}
2151
2152	static inline void context_set_render_offscreen(struct wined3d_context context, const struct StateEntry StateTable,
2153	BOOL offscreen)
2154	{
2155	if (context->render_offscreen == offscreen) return;
2156
2157	Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_PROJECTION), StateTable);
2158	Context_MarkStateDirty(context, STATE_VDECL, StateTable);
2159	Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
2160	Context_MarkStateDirty(context, STATE_SCISSORRECT, StateTable);
2161	Context_MarkStateDirty(context, STATE_FRONTFACE, StateTable);
2162	context->render_offscreen = offscreen;
2163	}
2164
2165	static BOOL match_depth_stencil_format(const struct wined3d_format_desc *existing,
2166	const struct wined3d_format_desc *required)
2167	{
2168	short existing_depth, existing_stencil, required_depth, required_stencil;
2169
2170	if(existing == required) return TRUE;
2171	if((existing->Flags & WINED3DFMT_FLAG_FLOAT) != (required->Flags & WINED3DFMT_FLAG_FLOAT)) return FALSE;
2172
2173	getDepthStencilBits(existing, &existing_depth, &existing_stencil);
2174	getDepthStencilBits(required, &required_depth, &required_stencil);
2175
2176	if(existing_depth < required_depth) return FALSE;
2177	/* If stencil bits are used the exact amount is required - otherwise wrapping
2178	* won't work correctly */
2179	if(required_stencil && required_stencil != existing_stencil) return FALSE;
2180	return TRUE;
2181	}
2182	/* The caller provides a context */
2183	static void context_validate_onscreen_formats(IWineD3DDeviceImpl device, struct wined3d_context context)
2184	{
2185	/* Onscreen surfaces are always in a swapchain */
2186	IWineD3DSurfaceImpl depth_stencil = (IWineD3DSurfaceImpl ) device->stencilBufferTarget;
2187	IWineD3DSwapChainImpl swapchain = (IWineD3DSwapChainImpl ) ((IWineD3DSurfaceImpl *)context->current_rt)->container;
2188
2189	if (!depth_stencil) return;
2190	if (match_depth_stencil_format(swapchain->ds_format, depth_stencil->resource.format_desc)) return;
2191
2192	/* TODO: If the requested format would satisfy the needs of the existing one(reverse match),
2193	* or no onscreen depth buffer was created, the OpenGL drawable could be changed to the new
2194	* format. */
2195	WARN("Depth stencil format is not supported by WGL, rendering the backbuffer in an FBO\n");
2196
2197	/* The currently active context is the necessary context to access the swapchain's onscreen buffers */
2198	IWineD3DSurface_LoadLocation(context->current_rt, SFLAG_INTEXTURE, NULL);
2199	swapchain->render_to_fbo = TRUE;
2200	context_set_render_offscreen(context, device->StateTable, TRUE);
2201	}
2202
2203	/* Context activation is done by the caller. */
2204	static void context_apply_state(struct wined3d_context context, IWineD3DDeviceImpl device, enum ContextUsage usage)
2205	{
2206	const struct StateEntry *state_table = device->StateTable;
2207	unsigned int i;
2208
2209	switch (usage) {
2210	case CTXUSAGE_CLEAR:
2211	case CTXUSAGE_DRAWPRIM:
2212	if (wined3d_settings.offscreen_rendering_mode == ORM_FBO) {
2213	if (!context->render_offscreen) context_validate_onscreen_formats(device, context);
2214	ENTER_GL();
2215	context_apply_fbo_state(context);
2216	LEAVE_GL();
2217	}
2218	if (context->draw_buffer_dirty) {
2219	context_apply_draw_buffer(context, FALSE);
2220	context->draw_buffer_dirty = FALSE;
2221	}
2222	break;
2223
2224	case CTXUSAGE_BLIT:
2225	if (wined3d_settings.offscreen_rendering_mode == ORM_FBO) {
2226	if (!context->render_offscreen) context_validate_onscreen_formats(device, context);
2227	if (context->render_offscreen)
2228	{
2229	FIXME("Activating for CTXUSAGE_BLIT for an offscreen target with ORM_FBO. This should be avoided.\n");
2230	surface_internal_preload(context->current_rt, SRGB_RGB);
2231
2232	ENTER_GL();
2233	context_bind_fbo(context, GL_FRAMEBUFFER, &context->dst_fbo);
2234	context_attach_surface_fbo(context, GL_FRAMEBUFFER, 0, (IWineD3DSurfaceImpl *)context->current_rt);
2235	context_attach_depth_stencil_fbo(context, GL_FRAMEBUFFER, NULL, FALSE);
2236	LEAVE_GL();
2237	} else {
2238	ENTER_GL();
2239	context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
2240	LEAVE_GL();
2241	}
2242	context->draw_buffer_dirty = TRUE;
2243	}
2244	if (context->draw_buffer_dirty) {
2245	context_apply_draw_buffer(context, TRUE);
2246	if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) {
2247	context->draw_buffer_dirty = FALSE;
2248	}
2249	}
2250	break;
2251
2252	default:
2253	break;
2254	}
2255
2256	switch(usage) {
2257	case CTXUSAGE_RESOURCELOAD:
2258	/* This does not require any special states to be set up */
2259	break;
2260
2261	case CTXUSAGE_CLEAR:
2262	if(context->last_was_blit) {
2263	device->frag_pipe->enable_extension((IWineD3DDevice *)device, TRUE);
2264	}
2265
2266	/* Blending and clearing should be orthogonal, but tests on the nvidia driver show that disabling
2267	* blending when clearing improves the clearing performance incredibly.
2268	*/
2269	ENTER_GL();
2270	glDisable(GL_BLEND);
2271	LEAVE_GL();
2272	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), state_table);
2273
2274	ENTER_GL();
2275	glEnable(GL_SCISSOR_TEST);
2276	checkGLcall("glEnable GL_SCISSOR_TEST");
2277	LEAVE_GL();
2278	context->last_was_blit = FALSE;
2279	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE), state_table);
2280	Context_MarkStateDirty(context, STATE_SCISSORRECT, state_table);
2281	break;
2282
2283	case CTXUSAGE_DRAWPRIM:
2284	/* This needs all dirty states applied */
2285	if(context->last_was_blit) {
2286	device->frag_pipe->enable_extension((IWineD3DDevice *)device, TRUE);
2287	}
2288
2289	IWineD3DDeviceImpl_FindTexUnitMap(device);
2290	device_preload_textures(device);
2291	if (isStateDirty(context, STATE_VDECL))
2292	device_update_stream_info(device, context->gl_info);
2293
2294	ENTER_GL();
2295	for (i = 0; i < context->numDirtyEntries; ++i)
2296	{
2297	DWORD rep = context->dirtyArray[i];
2298	DWORD idx = rep / (sizeof(context->isStateDirty) CHAR_BIT);
2299	BYTE shift = rep & ((sizeof(context->isStateDirty) CHAR_BIT) - 1);
2300	context->isStateDirty[idx] &= ~(1 << shift);
2301	state_table[rep].apply(rep, device->stateBlock, context);
2302	}
2303	LEAVE_GL();
2304	context->numDirtyEntries = 0; /* This makes the whole list clean */
2305	context->last_was_blit = FALSE;
2306	break;
2307
2308	case CTXUSAGE_BLIT:
2309	SetupForBlit(device, context);
2310	break;
2311
2312	default:
2313	FIXME("Unexpected context usage requested\n");
2314	}
2315	}
2316
2317	static void context_setup_target(IWineD3DDeviceImpl device, struct wined3d_context context, IWineD3DSurface *target)
2318	{
2319	BOOL old_render_offscreen = context->render_offscreen, render_offscreen;
2320	const struct StateEntry *StateTable = device->StateTable;
2321
2322	if (!target) return;
2323	else if (context->current_rt == target) return;
2324	render_offscreen = surface_is_offscreen(target);
2325
2326	context_set_render_offscreen(context, StateTable, render_offscreen);
2327
2328	/* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
2329	* the alpha blend state changes with different render target formats. */
2330	if (!context->current_rt)
2331	{
2332	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
2333	}
2334	else
2335	{
2336	const struct wined3d_format_desc old = ((IWineD3DSurfaceImpl )context->current_rt)->resource.format_desc;
2337	const struct wined3d_format_desc new = ((IWineD3DSurfaceImpl )target)->resource.format_desc;
2338
2339	if (old->format != new->format)
2340	{
2341	/* Disable blending when the alpha mask has changed and when a format doesn't support blending. */
2342	if ((old->alpha_mask && !new->alpha_mask) \|\| (!old->alpha_mask && new->alpha_mask)
2343	\|\| !(new->Flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
2344	{
2345	Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
2346	}
2347	}
2348
2349	/* When switching away from an offscreen render target, and we're not
2350	* using FBOs, we have to read the drawable into the texture. This is
2351	* done via PreLoad (and SFLAG_INDRAWABLE set on the surface). There
2352	* are some things that need care though. PreLoad needs a GL context,
2353	* and FindContext is called before the context is activated. It also
2354	* has to be called with the old rendertarget active, otherwise a
2355	* wrong drawable is read. */
2356	if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
2357	&& old_render_offscreen && context->current_rt != target)
2358	{
2359	BOOL oldInDraw = device->isInDraw;
2360
2361	/* surface_internal_preload() requires a context to load the
2362	* texture, so it will call context_acquire(). Set isInDraw to true
2363	* to signal surface_internal_preload() that it has a context. */
2364
2365	/* FIXME: This is just broken. There's no guarantee whatsoever
2366	* that the currently active context, if any, is appropriate for
2367	* reading back the render target. We should probably call
2368	* context_set_current(context) here and then rely on
2369	* context_acquire() doing the right thing. */
2370	device->isInDraw = TRUE;
2371
2372	/* Read the back buffer of the old drawable into the destination texture. */
2373	if (((IWineD3DSurfaceImpl *)context->current_rt)->texture_name_srgb)
2374	{
2375	surface_internal_preload(context->current_rt, SRGB_BOTH);
2376	}
2377	else
2378	{
2379	surface_internal_preload(context->current_rt, SRGB_RGB);
2380	}
2381
2382	IWineD3DSurface_ModifyLocation(context->current_rt, SFLAG_INDRAWABLE, FALSE);
2383
2384	device->isInDraw = oldInDraw;
2385	}
2386	}
2387
2388	context->draw_buffer_dirty = TRUE;
2389	context->current_rt = target;
2390	}
2391
2392	/*****************************************************************************
2393	* context_acquire
2394	*
2395	* Finds a rendering context and drawable matching the device and render
2396	* target for the current thread, activates them and puts them into the
2397	* requested state.
2398	*
2399	* Params:
2400	* This: Device to activate the context for
2401	* target: Requested render target
2402	* usage: Prepares the context for blitting, drawing or other actions
2403	*
2404	*****************************************************************************/
2405	struct wined3d_context context_acquire(IWineD3DDeviceImpl device, IWineD3DSurface *target, enum ContextUsage usage)
2406	{
2407	struct wined3d_context *current_context = context_get_current();
2408	struct wined3d_context *context;
2409
2410	TRACE("device %p, target %p, usage %#x.\n", device, target, usage);
2411
2412	context = FindContext(device, target);
2413	context_setup_target(device, context, target);
2414	context_enter(context);
2415	if (!context->valid) return context;
2416
2417	if (context != current_context)
2418	{
2419	if (!context_set_current(context)) ERR("Failed to activate the new context.\n");
2420	else device->frag_pipe->enable_extension((IWineD3DDevice *)device, !context->last_was_blit);
2421
2422	if (context->vshader_const_dirty)
2423	{
2424	memset(context->vshader_const_dirty, 1,
2425	sizeof(context->vshader_const_dirty) device->d3d_vshader_constantF);
2426	device->highest_dirty_vs_const = device->d3d_vshader_constantF;
2427	}
2428	if (context->pshader_const_dirty)
2429	{
2430	memset(context->pshader_const_dirty, 1,
2431	sizeof(context->pshader_const_dirty) device->d3d_pshader_constantF);
2432	device->highest_dirty_ps_const = device->d3d_pshader_constantF;
2433	}
2434	}
2435	else if (context->restore_ctx)
2436	{
2437	if (!pwglMakeCurrent(context->hdc, context->glCtx))
2438	{
2439	DWORD err = GetLastError();
2440	ERR("Failed to make GL context %p current on device context %p, last error %#x.\n",
2441	context->hdc, context->glCtx, err);
2442	}
2443	}
2444
2445	context_apply_state(context, device, usage);
2446
2447	return context;
2448	}

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source: vbox/trunk/src/VBox/Additions/WINNT/Graphics/Wine/wined3d/context.c@ 33684

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