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wined3d: Remove a useless NULL check (Coverity).
[wine/multimedia.git] / dlls / wined3d / context.c
blobe44ee81f2d65081eb21942d19de9ea5cb366b5fd
1 /*
2 * Context and render target management in wined3d
3 *
4 * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
5 * Copyright 2009-2011 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 #include "config.h"
23 #include <stdio.h>
24 #ifdef HAVE_FLOAT_H
25 # include <float.h>
26 #endif
27 #include "wined3d_private.h"
28
29 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
30
31 static DWORD wined3d_context_tls_idx;
32
33 /* FBO helper functions */
34
35 /* GL locking is done by the caller */
36 static void context_bind_fbo(struct wined3d_context *context, GLenum target, GLuint *fbo)
37 {
38 const struct wined3d_gl_info *gl_info = context->gl_info;
39 GLuint f;
40
41 if (!fbo)
42 {
43 f = 0;
44 }
45 else
46 {
47 if (!*fbo)
48 {
49 gl_info->fbo_ops.glGenFramebuffers(1, fbo);
50 checkGLcall("glGenFramebuffers()");
51 TRACE("Created FBO %u.\n", *fbo);
52 }
53 f = *fbo;
54 }
55
56 switch (target)
57 {
58 case GL_READ_FRAMEBUFFER:
59 if (context->fbo_read_binding == f) return;
60 context->fbo_read_binding = f;
61 break;
62
63 case GL_DRAW_FRAMEBUFFER:
64 if (context->fbo_draw_binding == f) return;
65 context->fbo_draw_binding = f;
66 break;
67
68 case GL_FRAMEBUFFER:
69 if (context->fbo_read_binding == f
70 && context->fbo_draw_binding == f) return;
71 context->fbo_read_binding = f;
72 context->fbo_draw_binding = f;
73 break;
74
75 default:
76 FIXME("Unhandled target %#x.\n", target);
77 break;
78 }
79
80 gl_info->fbo_ops.glBindFramebuffer(target, f);
81 checkGLcall("glBindFramebuffer()");
82 }
83
84 /* GL locking is done by the caller */
85 static void context_clean_fbo_attachments(const struct wined3d_gl_info *gl_info, GLenum target)
86 {
87 unsigned int i;
88
89 for (i = 0; i < gl_info->limits.buffers; ++i)
90 {
91 gl_info->fbo_ops.glFramebufferTexture2D(target, GL_COLOR_ATTACHMENT0 + i, GL_TEXTURE_2D, 0, 0);
92 checkGLcall("glFramebufferTexture2D()");
93 }
94 gl_info->fbo_ops.glFramebufferTexture2D(target, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
95 checkGLcall("glFramebufferTexture2D()");
96
97 gl_info->fbo_ops.glFramebufferTexture2D(target, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
98 checkGLcall("glFramebufferTexture2D()");
99 }
100
101 /* GL locking is done by the caller */
102 static void context_destroy_fbo(struct wined3d_context *context, GLuint *fbo)
103 {
104 const struct wined3d_gl_info *gl_info = context->gl_info;
105
106 context_bind_fbo(context, GL_FRAMEBUFFER, fbo);
107 context_clean_fbo_attachments(gl_info, GL_FRAMEBUFFER);
108 context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
109
110 gl_info->fbo_ops.glDeleteFramebuffers(1, fbo);
111 checkGLcall("glDeleteFramebuffers()");
112 }
113
114 static void context_attach_depth_stencil_rb(const struct wined3d_gl_info *gl_info,
115 GLenum fbo_target, DWORD format_flags, GLuint rb)
116 {
117 if (format_flags & WINED3DFMT_FLAG_DEPTH)
118 {
119 gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rb);
120 checkGLcall("glFramebufferRenderbuffer()");
121 }
122
123 if (format_flags & WINED3DFMT_FLAG_STENCIL)
124 {
125 gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rb);
126 checkGLcall("glFramebufferRenderbuffer()");
127 }
128 }
129
130 /* GL locking is done by the caller */
131 static void context_attach_depth_stencil_fbo(struct wined3d_context *context,
132 GLenum fbo_target, struct wined3d_surface *depth_stencil, DWORD location)
133 {
134 const struct wined3d_gl_info *gl_info = context->gl_info;
135
136 TRACE("Attach depth stencil %p\n", depth_stencil);
137
138 if (depth_stencil)
139 {
140 DWORD format_flags = depth_stencil->resource.format->flags;
141
142 if (depth_stencil->current_renderbuffer)
143 {
144 context_attach_depth_stencil_rb(gl_info, fbo_target,
145 format_flags, depth_stencil->current_renderbuffer->id);
146 }
147 else
148 {
149 switch (location)
150 {
151 case SFLAG_INTEXTURE:
152 case SFLAG_INSRGBTEX:
153 surface_prepare_texture(depth_stencil, context, FALSE);
154
155 if (format_flags & WINED3DFMT_FLAG_DEPTH)
156 {
157 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT,
158 depth_stencil->texture_target, depth_stencil->texture_name,
159 depth_stencil->texture_level);
160 checkGLcall("glFramebufferTexture2D()");
161 }
162
163 if (format_flags & WINED3DFMT_FLAG_STENCIL)
164 {
165 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT,
166 depth_stencil->texture_target, depth_stencil->texture_name,
167 depth_stencil->texture_level);
168 checkGLcall("glFramebufferTexture2D()");
169 }
170 break;
171
172 case SFLAG_INRB_MULTISAMPLE:
173 surface_prepare_rb(depth_stencil, gl_info, TRUE);
174 context_attach_depth_stencil_rb(gl_info, fbo_target,
175 format_flags, depth_stencil->rb_multisample);
176 break;
177
178 case SFLAG_INRB_RESOLVED:
179 surface_prepare_rb(depth_stencil, gl_info, FALSE);
180 context_attach_depth_stencil_rb(gl_info, fbo_target,
181 format_flags, depth_stencil->rb_resolved);
182 break;
183
184 default:
185 ERR("Unsupported location %s (%#x).\n", debug_surflocation(location), location);
186 break;
187 }
188 }
189
190 if (!(format_flags & WINED3DFMT_FLAG_DEPTH))
191 {
192 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
193 checkGLcall("glFramebufferTexture2D()");
194 }
195
196 if (!(format_flags & WINED3DFMT_FLAG_STENCIL))
197 {
198 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
199 checkGLcall("glFramebufferTexture2D()");
200 }
201 }
202 else
203 {
204 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
205 checkGLcall("glFramebufferTexture2D()");
206
207 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
208 checkGLcall("glFramebufferTexture2D()");
209 }
210 }
211
212 /* GL locking is done by the caller */
213 static void context_attach_surface_fbo(struct wined3d_context *context,
214 GLenum fbo_target, DWORD idx, struct wined3d_surface *surface, DWORD location)
215 {
216 const struct wined3d_gl_info *gl_info = context->gl_info;
217
218 TRACE("Attach surface %p to %u\n", surface, idx);
219
220 if (surface && surface->resource.format->id != WINED3DFMT_NULL)
221 {
222 BOOL srgb;
223
224 switch (location)
225 {
226 case SFLAG_INTEXTURE:
227 case SFLAG_INSRGBTEX:
228 srgb = location == SFLAG_INSRGBTEX;
229 surface_prepare_texture(surface, context, srgb);
230 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_COLOR_ATTACHMENT0 + idx,
231 surface->texture_target, surface_get_texture_name(surface, gl_info, srgb),
232 surface->texture_level);
233 checkGLcall("glFramebufferTexture2D()");
234 break;
235
236 case SFLAG_INRB_MULTISAMPLE:
237 surface_prepare_rb(surface, gl_info, TRUE);
238 gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_COLOR_ATTACHMENT0 + idx,
239 GL_RENDERBUFFER, surface->rb_multisample);
240 checkGLcall("glFramebufferRenderbuffer()");
241 break;
242
243 case SFLAG_INRB_RESOLVED:
244 surface_prepare_rb(surface, gl_info, FALSE);
245 gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_COLOR_ATTACHMENT0 + idx,
246 GL_RENDERBUFFER, surface->rb_resolved);
247 checkGLcall("glFramebufferRenderbuffer()");
248 break;
249
250 default:
251 ERR("Unsupported location %s (%#x).\n", debug_surflocation(location), location);
252 break;
253 }
254 }
255 else
256 {
257 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_COLOR_ATTACHMENT0 + idx, GL_TEXTURE_2D, 0, 0);
258 checkGLcall("glFramebufferTexture2D()");
259 }
260 }
261
262 /* GL locking is done by the caller */
263 void context_check_fbo_status(const struct wined3d_context *context, GLenum target)
264 {
265 const struct wined3d_gl_info *gl_info = context->gl_info;
266 GLenum status;
267
268 if (!FIXME_ON(d3d)) return;
269
270 status = gl_info->fbo_ops.glCheckFramebufferStatus(target);
271 if (status == GL_FRAMEBUFFER_COMPLETE)
272 {
273 TRACE("FBO complete\n");
274 }
275 else
276 {
277 const struct wined3d_surface *attachment;
278 unsigned int i;
279
280 FIXME("FBO status %s (%#x)\n", debug_fbostatus(status), status);
281
282 if (!context->current_fbo)
283 {
284 ERR("FBO 0 is incomplete, driver bug?\n");
285 return;
286 }
287
288 FIXME("\tLocation %s (%#x).\n", debug_surflocation(context->current_fbo->location),
289 context->current_fbo->location);
290
291 /* Dump the FBO attachments */
292 for (i = 0; i < gl_info->limits.buffers; ++i)
293 {
294 attachment = context->current_fbo->render_targets[i];
295 if (attachment)
296 {
297 FIXME("\tColor attachment %d: (%p) %s %ux%u %u samples.\n",
298 i, attachment, debug_d3dformat(attachment->resource.format->id),
299 attachment->pow2Width, attachment->pow2Height, attachment->resource.multisample_type);
300 }
301 }
302 attachment = context->current_fbo->depth_stencil;
303 if (attachment)
304 {
305 FIXME("\tDepth attachment: (%p) %s %ux%u %u samples.\n",
306 attachment, debug_d3dformat(attachment->resource.format->id),
307 attachment->pow2Width, attachment->pow2Height, attachment->resource.multisample_type);
308 }
309 }
310 }
311
312 static inline DWORD context_generate_rt_mask(GLenum buffer)
313 {
314 /* Should take care of all the GL_FRONT/GL_BACK/GL_AUXi/GL_NONE... cases */
315 return buffer ? (1 << 31) | buffer : 0;
316 }
317
318 static inline DWORD context_generate_rt_mask_from_surface(const struct wined3d_surface *target)
319 {
320 return (1 << 31) | surface_get_gl_buffer(target);
321 }
322
323 static struct fbo_entry *context_create_fbo_entry(const struct wined3d_context *context,
324 struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil, DWORD location)
325 {
326 const struct wined3d_gl_info *gl_info = context->gl_info;
327 struct fbo_entry *entry;
328
329 entry = HeapAlloc(GetProcessHeap(), 0, sizeof(*entry));
330 entry->render_targets = HeapAlloc(GetProcessHeap(), 0, gl_info->limits.buffers * sizeof(*entry->render_targets));
331 memcpy(entry->render_targets, render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets));
332 entry->depth_stencil = depth_stencil;
333 entry->location = location;
334 entry->rt_mask = context_generate_rt_mask(GL_COLOR_ATTACHMENT0);
335 entry->attached = FALSE;
336 entry->id = 0;
337
338 return entry;
339 }
340
341 /* GL locking is done by the caller */
342 static void context_reuse_fbo_entry(struct wined3d_context *context, GLenum target,
343 struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil,
344 DWORD location, struct fbo_entry *entry)
345 {
346 const struct wined3d_gl_info *gl_info = context->gl_info;
347
348 context_bind_fbo(context, target, &entry->id);
349 context_clean_fbo_attachments(gl_info, target);
350
351 memcpy(entry->render_targets, render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets));
352 entry->depth_stencil = depth_stencil;
353 entry->location = location;
354 entry->attached = FALSE;
355 }
356
357 /* GL locking is done by the caller */
358 static void context_destroy_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
359 {
360 if (entry->id)
361 {
362 TRACE("Destroy FBO %d\n", entry->id);
363 context_destroy_fbo(context, &entry->id);
364 }
365 --context->fbo_entry_count;
366 list_remove(&entry->entry);
367 HeapFree(GetProcessHeap(), 0, entry->render_targets);
368 HeapFree(GetProcessHeap(), 0, entry);
369 }
370
371
372 /* GL locking is done by the caller */
373 static struct fbo_entry *context_find_fbo_entry(struct wined3d_context *context, GLenum target,
374 struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil, DWORD location)
375 {
376 const struct wined3d_gl_info *gl_info = context->gl_info;
377 struct fbo_entry *entry;
378
379 if (depth_stencil && render_targets && render_targets[0])
380 {
381 if (depth_stencil->resource.width < render_targets[0]->resource.width ||
382 depth_stencil->resource.height < render_targets[0]->resource.height)
383 {
384 WARN("Depth stencil is smaller than the primary color buffer, disabling\n");
385 depth_stencil = NULL;
386 }
387 }
388
389 LIST_FOR_EACH_ENTRY(entry, &context->fbo_list, struct fbo_entry, entry)
390 {
391 if (!memcmp(entry->render_targets,
392 render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets))
393 && entry->depth_stencil == depth_stencil && entry->location == location)
394 {
395 list_remove(&entry->entry);
396 list_add_head(&context->fbo_list, &entry->entry);
397 return entry;
398 }
399 }
400
401 if (context->fbo_entry_count < WINED3D_MAX_FBO_ENTRIES)
402 {
403 entry = context_create_fbo_entry(context, render_targets, depth_stencil, location);
404 list_add_head(&context->fbo_list, &entry->entry);
405 ++context->fbo_entry_count;
406 }
407 else
408 {
409 entry = LIST_ENTRY(list_tail(&context->fbo_list), struct fbo_entry, entry);
410 context_reuse_fbo_entry(context, target, render_targets, depth_stencil, location, entry);
411 list_remove(&entry->entry);
412 list_add_head(&context->fbo_list, &entry->entry);
413 }
414
415 return entry;
416 }
417
418 /* GL locking is done by the caller */
419 static void context_apply_fbo_entry(struct wined3d_context *context, GLenum target, struct fbo_entry *entry)
420 {
421 const struct wined3d_gl_info *gl_info = context->gl_info;
422 unsigned int i;
423
424 context_bind_fbo(context, target, &entry->id);
425
426 if (entry->attached) return;
427
428 /* Apply render targets */
429 for (i = 0; i < gl_info->limits.buffers; ++i)
430 {
431 context_attach_surface_fbo(context, target, i, entry->render_targets[i], entry->location);
432 }
433
434 /* Apply depth targets */
435 if (entry->depth_stencil)
436 surface_set_compatible_renderbuffer(entry->depth_stencil, entry->render_targets[0]);
437 context_attach_depth_stencil_fbo(context, target, entry->depth_stencil, entry->location);
438
439 entry->attached = TRUE;
440 }
441
442 /* GL locking is done by the caller */
443 static void context_apply_fbo_state(struct wined3d_context *context, GLenum target,
444 struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil, DWORD location)
445 {
446 struct fbo_entry *entry, *entry2;
447
448 LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
449 {
450 context_destroy_fbo_entry(context, entry);
451 }
452
453 if (context->rebind_fbo)
454 {
455 context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
456 context->rebind_fbo = FALSE;
457 }
458
459 if (location == SFLAG_INDRAWABLE)
460 {
461 context->current_fbo = NULL;
462 context_bind_fbo(context, target, NULL);
463 }
464 else
465 {
466 context->current_fbo = context_find_fbo_entry(context, target, render_targets, depth_stencil, location);
467 context_apply_fbo_entry(context, target, context->current_fbo);
468 }
469 }
470
471 /* GL locking is done by the caller */
472 void context_apply_fbo_state_blit(struct wined3d_context *context, GLenum target,
473 struct wined3d_surface *render_target, struct wined3d_surface *depth_stencil, DWORD location)
474 {
475 UINT clear_size = (context->gl_info->limits.buffers - 1) * sizeof(*context->blit_targets);
476
477 context->blit_targets[0] = render_target;
478 if (clear_size)
479 memset(&context->blit_targets[1], 0, clear_size);
480 context_apply_fbo_state(context, target, context->blit_targets, depth_stencil, location);
481 }
482
483 /* Context activation is done by the caller. */
484 void context_alloc_occlusion_query(struct wined3d_context *context, struct wined3d_occlusion_query *query)
485 {
486 const struct wined3d_gl_info *gl_info = context->gl_info;
487
488 if (context->free_occlusion_query_count)
489 {
490 query->id = context->free_occlusion_queries[--context->free_occlusion_query_count];
491 }
492 else
493 {
494 if (gl_info->supported[ARB_OCCLUSION_QUERY])
495 {
496 ENTER_GL();
497 GL_EXTCALL(glGenQueriesARB(1, &query->id));
498 checkGLcall("glGenQueriesARB");
499 LEAVE_GL();
500
501 TRACE("Allocated occlusion query %u in context %p.\n", query->id, context);
502 }
503 else
504 {
505 WARN("Occlusion queries not supported, not allocating query id.\n");
506 query->id = 0;
507 }
508 }
509
510 query->context = context;
511 list_add_head(&context->occlusion_queries, &query->entry);
512 }
513
514 void context_free_occlusion_query(struct wined3d_occlusion_query *query)
515 {
516 struct wined3d_context *context = query->context;
517
518 list_remove(&query->entry);
519 query->context = NULL;
520
521 if (context->free_occlusion_query_count >= context->free_occlusion_query_size - 1)
522 {
523 UINT new_size = context->free_occlusion_query_size << 1;
524 GLuint *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_occlusion_queries,
525 new_size * sizeof(*context->free_occlusion_queries));
526
527 if (!new_data)
528 {
529 ERR("Failed to grow free list, leaking query %u in context %p.\n", query->id, context);
530 return;
531 }
532
533 context->free_occlusion_query_size = new_size;
534 context->free_occlusion_queries = new_data;
535 }
536
537 context->free_occlusion_queries[context->free_occlusion_query_count++] = query->id;
538 }
539
540 /* Context activation is done by the caller. */
541 void context_alloc_event_query(struct wined3d_context *context, struct wined3d_event_query *query)
542 {
543 const struct wined3d_gl_info *gl_info = context->gl_info;
544
545 if (context->free_event_query_count)
546 {
547 query->object = context->free_event_queries[--context->free_event_query_count];
548 }
549 else
550 {
551 if (gl_info->supported[ARB_SYNC])
552 {
553 /* Using ARB_sync, not much to do here. */
554 query->object.sync = NULL;
555 TRACE("Allocated event query %p in context %p.\n", query->object.sync, context);
556 }
557 else if (gl_info->supported[APPLE_FENCE])
558 {
559 ENTER_GL();
560 GL_EXTCALL(glGenFencesAPPLE(1, &query->object.id));
561 checkGLcall("glGenFencesAPPLE");
562 LEAVE_GL();
563
564 TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
565 }
566 else if(gl_info->supported[NV_FENCE])
567 {
568 ENTER_GL();
569 GL_EXTCALL(glGenFencesNV(1, &query->object.id));
570 checkGLcall("glGenFencesNV");
571 LEAVE_GL();
572
573 TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
574 }
575 else
576 {
577 WARN("Event queries not supported, not allocating query id.\n");
578 query->object.id = 0;
579 }
580 }
581
582 query->context = context;
583 list_add_head(&context->event_queries, &query->entry);
584 }
585
586 void context_free_event_query(struct wined3d_event_query *query)
587 {
588 struct wined3d_context *context = query->context;
589
590 list_remove(&query->entry);
591 query->context = NULL;
592
593 if (context->free_event_query_count >= context->free_event_query_size - 1)
594 {
595 UINT new_size = context->free_event_query_size << 1;
596 union wined3d_gl_query_object *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_event_queries,
597 new_size * sizeof(*context->free_event_queries));
598
599 if (!new_data)
600 {
601 ERR("Failed to grow free list, leaking query %u in context %p.\n", query->object.id, context);
602 return;
603 }
604
605 context->free_event_query_size = new_size;
606 context->free_event_queries = new_data;
607 }
608
609 context->free_event_queries[context->free_event_query_count++] = query->object;
610 }
611
612 typedef void (context_fbo_entry_func_t)(struct wined3d_context *context, struct fbo_entry *entry);
613
614 static void context_enum_surface_fbo_entries(const struct wined3d_device *device,
615 const struct wined3d_surface *surface, context_fbo_entry_func_t *callback)
616 {
617 UINT i;
618
619 for (i = 0; i < device->context_count; ++i)
620 {
621 struct wined3d_context *context = device->contexts[i];
622 const struct wined3d_gl_info *gl_info = context->gl_info;
623 struct fbo_entry *entry, *entry2;
624
625 if (context->current_rt == surface) context->current_rt = NULL;
626
627 LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
628 {
629 UINT j;
630
631 if (entry->depth_stencil == surface)
632 {
633 callback(context, entry);
634 continue;
635 }
636
637 for (j = 0; j < gl_info->limits.buffers; ++j)
638 {
639 if (entry->render_targets[j] == surface)
640 {
641 callback(context, entry);
642 break;
643 }
644 }
645 }
646 }
647 }
648
649 static void context_queue_fbo_entry_destruction(struct wined3d_context *context, struct fbo_entry *entry)
650 {
651 list_remove(&entry->entry);
652 list_add_head(&context->fbo_destroy_list, &entry->entry);
653 }
654
655 void context_resource_released(const struct wined3d_device *device,
656 struct wined3d_resource *resource, WINED3DRESOURCETYPE type)
657 {
658 if (!device->d3d_initialized) return;
659
660 switch (type)
661 {
662 case WINED3DRTYPE_SURFACE:
663 context_enum_surface_fbo_entries(device, surface_from_resource(resource),
664 context_queue_fbo_entry_destruction);
665 break;
666
667 default:
668 break;
669 }
670 }
671
672 static void context_detach_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
673 {
674 entry->attached = FALSE;
675 }
676
677 void context_resource_unloaded(const struct wined3d_device *device,
678 struct wined3d_resource *resource, WINED3DRESOURCETYPE type)
679 {
680 switch (type)
681 {
682 case WINED3DRTYPE_SURFACE:
683 context_enum_surface_fbo_entries(device, surface_from_resource(resource),
684 context_detach_fbo_entry);
685 break;
686
687 default:
688 break;
689 }
690 }
691
692 void context_surface_update(struct wined3d_context *context, const struct wined3d_surface *surface)
693 {
694 const struct wined3d_gl_info *gl_info = context->gl_info;
695 struct fbo_entry *entry = context->current_fbo;
696 unsigned int i;
697
698 if (!entry || context->rebind_fbo) return;
699
700 for (i = 0; i < gl_info->limits.buffers; ++i)
701 {
702 if (surface == entry->render_targets[i])
703 {
704 TRACE("Updated surface %p is bound as color attachment %u to the current FBO.\n", surface, i);
705 context->rebind_fbo = TRUE;
706 return;
707 }
708 }
709
710 if (surface == entry->depth_stencil)
711 {
712 TRACE("Updated surface %p is bound as depth attachment to the current FBO.\n", surface);
713 context->rebind_fbo = TRUE;
714 }
715 }
716
717 static BOOL context_set_pixel_format(const struct wined3d_gl_info *gl_info, HDC dc, int format)
718 {
719 int current = GetPixelFormat(dc);
720
721 if (current == format) return TRUE;
722
723 if (!current)
724 {
725 if (!SetPixelFormat(dc, format, NULL))
726 {
727 ERR("Failed to set pixel format %d on device context %p, last error %#x.\n",
728 format, dc, GetLastError());
729 return FALSE;
730 }
731 return TRUE;
732 }
733
734 /* By default WGL doesn't allow pixel format adjustments but we need it
735 * here. For this reason there's a Wine specific wglSetPixelFormat()
736 * which allows us to set the pixel format multiple times. Only use it
737 * when really needed. */
738 if (gl_info->supported[WGL_WINE_PIXEL_FORMAT_PASSTHROUGH])
739 {
740 if (!GL_EXTCALL(wglSetPixelFormatWINE(dc, format, NULL)))
741 {
742 ERR("wglSetPixelFormatWINE failed to set pixel format %d on device context %p.\n",
743 format, dc);
744 return FALSE;
745 }
746 return TRUE;
747 }
748
749 /* OpenGL doesn't allow pixel format adjustments. Print an error and
750 * continue using the old format. There's a big chance that the old
751 * format works although with a performance hit and perhaps rendering
752 * errors. */
753 ERR("Unable to set pixel format %d on device context %p. Already using format %d.\n",
754 format, dc, current);
755 return TRUE;
756 }
757
758 static BOOL context_set_gl_context(struct wined3d_context *ctx)
759 {
760 struct wined3d_swapchain *swapchain = ctx->swapchain;
761
762 if (!pwglMakeCurrent(ctx->hdc, ctx->glCtx))
763 {
764 HDC dc;
765
766 WARN("Failed to make GL context %p current on device context %p, last error %#x.\n",
767 ctx->glCtx, ctx->hdc, GetLastError());
768 ctx->valid = 0;
769 WARN("Trying fallback to the backup window.\n");
770
771 if (!(dc = swapchain_get_backup_dc(swapchain)))
772 {
773 context_set_current(NULL);
774 return FALSE;
775 }
776
777 if (!context_set_pixel_format(ctx->gl_info, dc, ctx->pixel_format))
778 {
779 ERR("Failed to set pixel format %d on device context %p.\n",
780 ctx->pixel_format, dc);
781 context_set_current(NULL);
782 return FALSE;
783 }
784
785 if (!pwglMakeCurrent(dc, ctx->glCtx))
786 {
787 ERR("Fallback to backup window (dc %p) failed too, last error %#x.\n",
788 dc, GetLastError());
789 context_set_current(NULL);
790 return FALSE;
791 }
792 }
793 return TRUE;
794 }
795
796 static void context_restore_gl_context(HDC dc, HGLRC gl_ctx)
797 {
798 if (!pwglMakeCurrent(dc, gl_ctx))
799 {
800 ERR("Failed to restore GL context %p on device context %p, last error %#x.\n",
801 gl_ctx, dc, GetLastError());
802 context_set_current(NULL);
803 }
804 }
805
806 static void context_update_window(struct wined3d_context *context)
807 {
808 if (context->win_handle == context->swapchain->win_handle)
809 return;
810
811 TRACE("Updating context %p window from %p to %p.\n",
812 context, context->win_handle, context->swapchain->win_handle);
813
814 if (context->valid)
815 {
816 /* You'd figure ReleaseDC() would fail if the DC doesn't match the
817 * window. However, that's not what actually happens, and there are
818 * user32 tests that confirm ReleaseDC() with the wrong window is
819 * supposed to succeed. So explicitly check that the DC belongs to
820 * the window, since we want to avoid releasing a DC that belongs to
821 * some other window if the original window was already destroyed. */
822 if (WindowFromDC(context->hdc) != context->win_handle)
823 {
824 WARN("DC %p does not belong to window %p.\n",
825 context->hdc, context->win_handle);
826 }
827 else if (!ReleaseDC(context->win_handle, context->hdc))
828 {
829 ERR("Failed to release device context %p, last error %#x.\n",
830 context->hdc, GetLastError());
831 }
832 }
833 else context->valid = 1;
834
835 context->win_handle = context->swapchain->win_handle;
836
837 if (!(context->hdc = GetDC(context->win_handle)))
838 {
839 ERR("Failed to get a device context for window %p.\n", context->win_handle);
840 goto err;
841 }
842
843 if (!context_set_pixel_format(context->gl_info, context->hdc, context->pixel_format))
844 {
845 ERR("Failed to set pixel format %d on device context %p.\n",
846 context->pixel_format, context->hdc);
847 goto err;
848 }
849
850 context_set_gl_context(context);
851
852 return;
853
854 err:
855 context->valid = 0;
856 }
857
858 /* Do not call while under the GL lock. */
859 static void context_destroy_gl_resources(struct wined3d_context *context)
860 {
861 const struct wined3d_gl_info *gl_info = context->gl_info;
862 struct wined3d_occlusion_query *occlusion_query;
863 struct wined3d_event_query *event_query;
864 struct fbo_entry *entry, *entry2;
865 HGLRC restore_ctx;
866 HDC restore_dc;
867 unsigned int i;
868
869 restore_ctx = pwglGetCurrentContext();
870 restore_dc = pwglGetCurrentDC();
871
872 context_update_window(context);
873 if (context->valid && restore_ctx != context->glCtx)
874 context_set_gl_context(context);
875 else restore_ctx = NULL;
876
877 ENTER_GL();
878
879 LIST_FOR_EACH_ENTRY(occlusion_query, &context->occlusion_queries, struct wined3d_occlusion_query, entry)
880 {
881 if (context->valid && gl_info->supported[ARB_OCCLUSION_QUERY])
882 GL_EXTCALL(glDeleteQueriesARB(1, &occlusion_query->id));
883 occlusion_query->context = NULL;
884 }
885
886 LIST_FOR_EACH_ENTRY(event_query, &context->event_queries, struct wined3d_event_query, entry)
887 {
888 if (context->valid)
889 {
890 if (gl_info->supported[ARB_SYNC])
891 {
892 if (event_query->object.sync) GL_EXTCALL(glDeleteSync(event_query->object.sync));
893 }
894 else if (gl_info->supported[APPLE_FENCE]) GL_EXTCALL(glDeleteFencesAPPLE(1, &event_query->object.id));
895 else if (gl_info->supported[NV_FENCE]) GL_EXTCALL(glDeleteFencesNV(1, &event_query->object.id));
896 }
897 event_query->context = NULL;
898 }
899
900 LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
901 {
902 if (!context->valid) entry->id = 0;
903 context_destroy_fbo_entry(context, entry);
904 }
905
906 LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
907 {
908 if (!context->valid) entry->id = 0;
909 context_destroy_fbo_entry(context, entry);
910 }
911
912 if (context->valid)
913 {
914 if (context->dummy_arbfp_prog)
915 {
916 GL_EXTCALL(glDeleteProgramsARB(1, &context->dummy_arbfp_prog));
917 }
918
919 if (gl_info->supported[ARB_OCCLUSION_QUERY])
920 GL_EXTCALL(glDeleteQueriesARB(context->free_occlusion_query_count, context->free_occlusion_queries));
921
922 if (gl_info->supported[ARB_SYNC])
923 {
924 for (i = 0; i < context->free_event_query_count; ++i)
925 {
926 GL_EXTCALL(glDeleteSync(context->free_event_queries[i].sync));
927 }
928 }
929 else if (gl_info->supported[APPLE_FENCE])
930 {
931 for (i = 0; i < context->free_event_query_count; ++i)
932 {
933 GL_EXTCALL(glDeleteFencesAPPLE(1, &context->free_event_queries[i].id));
934 }
935 }
936 else if (gl_info->supported[NV_FENCE])
937 {
938 for (i = 0; i < context->free_event_query_count; ++i)
939 {
940 GL_EXTCALL(glDeleteFencesNV(1, &context->free_event_queries[i].id));
941 }
942 }
943
944 checkGLcall("context cleanup");
945 }
946
947 LEAVE_GL();
948
949 HeapFree(GetProcessHeap(), 0, context->free_occlusion_queries);
950 HeapFree(GetProcessHeap(), 0, context->free_event_queries);
951
952 if (restore_ctx)
953 {
954 context_restore_gl_context(restore_dc, restore_ctx);
955 }
956 else if (pwglGetCurrentContext() && !pwglMakeCurrent(NULL, NULL))
957 {
958 ERR("Failed to disable GL context.\n");
959 }
960
961 ReleaseDC(context->win_handle, context->hdc);
962
963 if (!pwglDeleteContext(context->glCtx))
964 {
965 DWORD err = GetLastError();
966 ERR("wglDeleteContext(%p) failed, last error %#x.\n", context->glCtx, err);
967 }
968 }
969
970 DWORD context_get_tls_idx(void)
971 {
972 return wined3d_context_tls_idx;
973 }
974
975 void context_set_tls_idx(DWORD idx)
976 {
977 wined3d_context_tls_idx = idx;
978 }
979
980 struct wined3d_context *context_get_current(void)
981 {
982 return TlsGetValue(wined3d_context_tls_idx);
983 }
984
985 /* Do not call while under the GL lock. */
986 BOOL context_set_current(struct wined3d_context *ctx)
987 {
988 struct wined3d_context *old = context_get_current();
989
990 if (old == ctx)
991 {
992 TRACE("Already using D3D context %p.\n", ctx);
993 return TRUE;
994 }
995
996 if (old)
997 {
998 if (old->destroyed)
999 {
1000 TRACE("Switching away from destroyed context %p.\n", old);
1001 context_destroy_gl_resources(old);
1002 HeapFree(GetProcessHeap(), 0, old);
1003 }
1004 else
1005 {
1006 old->current = 0;
1007 }
1008 }
1009
1010 if (ctx)
1011 {
1012 if (!ctx->valid)
1013 {
1014 ERR("Trying to make invalid context %p current\n", ctx);
1015 return FALSE;
1016 }
1017
1018 TRACE("Switching to D3D context %p, GL context %p, device context %p.\n", ctx, ctx->glCtx, ctx->hdc);
1019 if (!context_set_gl_context(ctx))
1020 return FALSE;
1021 ctx->current = 1;
1022 }
1023 else if(pwglGetCurrentContext())
1024 {
1025 TRACE("Clearing current D3D context.\n");
1026 if (!pwglMakeCurrent(NULL, NULL))
1027 {
1028 DWORD err = GetLastError();
1029 ERR("Failed to clear current GL context, last error %#x.\n", err);
1030 TlsSetValue(wined3d_context_tls_idx, NULL);
1031 return FALSE;
1032 }
1033 }
1034
1035 return TlsSetValue(wined3d_context_tls_idx, ctx);
1036 }
1037
1038 void context_release(struct wined3d_context *context)
1039 {
1040 TRACE("Releasing context %p, level %u.\n", context, context->level);
1041
1042 if (WARN_ON(d3d))
1043 {
1044 if (!context->level)
1045 WARN("Context %p is not active.\n", context);
1046 else if (context != context_get_current())
1047 WARN("Context %p is not the current context.\n", context);
1048 }
1049
1050 if (!--context->level && context->restore_ctx)
1051 {
1052 TRACE("Restoring GL context %p on device context %p.\n", context->restore_ctx, context->restore_dc);
1053 context_restore_gl_context(context->restore_dc, context->restore_ctx);
1054 context->restore_ctx = NULL;
1055 context->restore_dc = NULL;
1056 }
1057 }
1058
1059 static void context_enter(struct wined3d_context *context)
1060 {
1061 TRACE("Entering context %p, level %u.\n", context, context->level + 1);
1062
1063 if (!context->level++)
1064 {
1065 const struct wined3d_context *current_context = context_get_current();
1066 HGLRC current_gl = pwglGetCurrentContext();
1067
1068 if (current_gl && (!current_context || current_context->glCtx != current_gl))
1069 {
1070 TRACE("Another GL context (%p on device context %p) is already current.\n",
1071 current_gl, pwglGetCurrentDC());
1072 context->restore_ctx = current_gl;
1073 context->restore_dc = pwglGetCurrentDC();
1074 }
1075 }
1076 }
1077
1078 void context_invalidate_state(struct wined3d_context *context, DWORD state)
1079 {
1080 DWORD rep = context->state_table[state].representative;
1081 DWORD idx;
1082 BYTE shift;
1083
1084 if (isStateDirty(context, rep)) return;
1085
1086 context->dirtyArray[context->numDirtyEntries++] = rep;
1087 idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
1088 shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
1089 context->isStateDirty[idx] |= (1 << shift);
1090 }
1091
1092 /* This function takes care of wined3d pixel format selection. */
1093 static int context_choose_pixel_format(struct wined3d_device *device, HDC hdc,
1094 const struct wined3d_format *color_format, const struct wined3d_format *ds_format,
1095 BOOL auxBuffers, BOOL findCompatible)
1096 {
1097 int iPixelFormat=0;
1098 unsigned int matchtry;
1099 BYTE redBits, greenBits, blueBits, alphaBits, colorBits;
1100 BYTE depthBits=0, stencilBits=0;
1101
1102 static const struct
1103 {
1104 BOOL require_aux;
1105 BOOL exact_alpha;
1106 BOOL exact_color;
1107 }
1108 matches[] =
1109 {
1110 /* First, try without alpha match buffers. MacOS supports aux buffers only
1111 * on A8R8G8B8, and we prefer better offscreen rendering over an alpha match.
1112 * Then try without aux buffers - this is the most common cause for not
1113 * finding a pixel format. Also some drivers(the open source ones)
1114 * only offer 32 bit ARB pixel formats. First try without an exact alpha
1115 * match, then try without an exact alpha and color match.
1116 */
1117 { TRUE, TRUE, TRUE },
1118 { TRUE, FALSE, TRUE },
1119 { FALSE, TRUE, TRUE },
1120 { FALSE, FALSE, TRUE },
1121 { TRUE, FALSE, FALSE },
1122 { FALSE, FALSE, FALSE },
1123 };
1124
1125 int i = 0;
1126 int nCfgs = device->adapter->nCfgs;
1127
1128 TRACE("device %p, dc %p, color_format %s, ds_format %s, aux_buffers %#x, find_compatible %#x.\n",
1129 device, hdc, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id),
1130 auxBuffers, findCompatible);
1131
1132 if (!getColorBits(color_format, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits))
1133 {
1134 ERR("Unable to get color bits for format %s (%#x)!\n",
1135 debug_d3dformat(color_format->id), color_format->id);
1136 return 0;
1137 }
1138
1139 getDepthStencilBits(ds_format, &depthBits, &stencilBits);
1140
1141 for (matchtry = 0; matchtry < (sizeof(matches) / sizeof(*matches)) && !iPixelFormat; ++matchtry)
1142 {
1143 for (i = 0; i < nCfgs; ++i)
1144 {
1145 const struct wined3d_pixel_format *cfg = &device->adapter->cfgs[i];
1146 BOOL exactDepthMatch = TRUE;
1147
1148 /* For now only accept RGBA formats. Perhaps some day we will
1149 * allow floating point formats for pbuffers. */
1150 if(cfg->iPixelType != WGL_TYPE_RGBA_ARB)
1151 continue;
1152
1153 /* In window mode we need a window drawable format and double buffering. */
1154 if(!(cfg->windowDrawable && cfg->doubleBuffer))
1155 continue;
1156
1157 /* We like to have aux buffers in backbuffer mode */
1158 if(auxBuffers && !cfg->auxBuffers && matches[matchtry].require_aux)
1159 continue;
1160
1161 if(matches[matchtry].exact_color) {
1162 if(cfg->redSize != redBits)
1163 continue;
1164 if(cfg->greenSize != greenBits)
1165 continue;
1166 if(cfg->blueSize != blueBits)
1167 continue;
1168 } else {
1169 if(cfg->redSize < redBits)
1170 continue;
1171 if(cfg->greenSize < greenBits)
1172 continue;
1173 if(cfg->blueSize < blueBits)
1174 continue;
1175 }
1176 if(matches[matchtry].exact_alpha) {
1177 if(cfg->alphaSize != alphaBits)
1178 continue;
1179 } else {
1180 if(cfg->alphaSize < alphaBits)
1181 continue;
1182 }
1183
1184 /* We try to locate a format which matches our requirements exactly. In case of
1185 * depth it is no problem to emulate 16-bit using e.g. 24-bit, so accept that. */
1186 if(cfg->depthSize < depthBits)
1187 continue;
1188 else if(cfg->depthSize > depthBits)
1189 exactDepthMatch = FALSE;
1190
1191 /* In all cases make sure the number of stencil bits matches our requirements
1192 * even when we don't need stencil because it could affect performance EXCEPT
1193 * on cards which don't offer depth formats without stencil like the i915 drivers
1194 * on Linux. */
1195 if (stencilBits != cfg->stencilSize
1196 && !(device->adapter->brokenStencil && stencilBits <= cfg->stencilSize))
1197 continue;
1198
1199 /* Check multisampling support */
1200 if (cfg->numSamples)
1201 continue;
1202
1203 /* When we have passed all the checks then we have found a format which matches our
1204 * requirements. Note that we only check for a limit number of capabilities right now,
1205 * so there can easily be a dozen of pixel formats which appear to be the 'same' but
1206 * can still differ in things like multisampling, stereo, SRGB and other flags.
1207 */
1208
1209 /* Exit the loop as we have found a format :) */
1210 if(exactDepthMatch) {
1211 iPixelFormat = cfg->iPixelFormat;
1212 break;
1213 } else if(!iPixelFormat) {
1214 /* In the end we might end up with a format which doesn't exactly match our depth
1215 * requirements. Accept the first format we found because formats with higher iPixelFormat
1216 * values tend to have more extended capabilities (e.g. multisampling) which we don't need. */
1217 iPixelFormat = cfg->iPixelFormat;
1218 }
1219 }
1220 }
1221
1222 /* When findCompatible is set and no suitable format was found, let ChoosePixelFormat choose a pixel format in order not to crash. */
1223 if(!iPixelFormat && !findCompatible) {
1224 ERR("Can't find a suitable iPixelFormat\n");
1225 return FALSE;
1226 } else if(!iPixelFormat) {
1227 PIXELFORMATDESCRIPTOR pfd;
1228
1229 TRACE("Falling back to ChoosePixelFormat as we weren't able to find an exactly matching pixel format\n");
1230 /* PixelFormat selection */
1231 ZeroMemory(&pfd, sizeof(pfd));
1232 pfd.nSize = sizeof(pfd);
1233 pfd.nVersion = 1;
1234 pfd.dwFlags = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW;/*PFD_GENERIC_ACCELERATED*/
1235 pfd.iPixelType = PFD_TYPE_RGBA;
1236 pfd.cAlphaBits = alphaBits;
1237 pfd.cColorBits = colorBits;
1238 pfd.cDepthBits = depthBits;
1239 pfd.cStencilBits = stencilBits;
1240 pfd.iLayerType = PFD_MAIN_PLANE;
1241
1242 iPixelFormat = ChoosePixelFormat(hdc, &pfd);
1243 if(!iPixelFormat) {
1244 /* If this happens something is very wrong as ChoosePixelFormat barely fails */
1245 ERR("Can't find a suitable iPixelFormat\n");
1246 return FALSE;
1247 }
1248 }
1249
1250 TRACE("Found iPixelFormat=%d for ColorFormat=%s, DepthStencilFormat=%s\n",
1251 iPixelFormat, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id));
1252 return iPixelFormat;
1253 }
1254
1255 /* GL locking is done by the caller */
1256 static void bind_dummy_textures(const struct wined3d_device *device, struct wined3d_context *context)
1257 {
1258 const struct wined3d_gl_info *gl_info = context->gl_info;
1259 unsigned int i, count = min(MAX_COMBINED_SAMPLERS, gl_info->limits.combined_samplers);
1260
1261 for (i = 0; i < count; ++i)
1262 {
1263 GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + i));
1264 checkGLcall("glActiveTextureARB");
1265
1266 glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[i]);
1267 checkGLcall("glBindTexture");
1268
1269 if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1270 {
1271 glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[i]);
1272 checkGLcall("glBindTexture");
1273 }
1274
1275 if (gl_info->supported[EXT_TEXTURE3D])
1276 {
1277 glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[i]);
1278 checkGLcall("glBindTexture");
1279 }
1280
1281 if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1282 {
1283 glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[i]);
1284 checkGLcall("glBindTexture");
1285 }
1286 }
1287 }
1288
1289 /* Do not call while under the GL lock. */
1290 struct wined3d_context *context_create(struct wined3d_swapchain *swapchain,
1291 struct wined3d_surface *target, const struct wined3d_format *ds_format)
1292 {
1293 struct wined3d_device *device = swapchain->device;
1294 const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
1295 const struct wined3d_format *color_format;
1296 struct wined3d_context *ret;
1297 PIXELFORMATDESCRIPTOR pfd;
1298 BOOL auxBuffers = FALSE;
1299 int pixel_format;
1300 unsigned int s;
1301 int swap_interval;
1302 DWORD state;
1303 HGLRC ctx;
1304 HDC hdc;
1305
1306 TRACE("swapchain %p, target %p, window %p.\n", swapchain, target, swapchain->win_handle);
1307
1308 ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ret));
1309 if (!ret)
1310 {
1311 ERR("Failed to allocate context memory.\n");
1312 return NULL;
1313 }
1314
1315 if (!(hdc = GetDC(swapchain->win_handle)))
1316 {
1317 WARN("Failed to retireve device context, trying swapchain backup.\n");
1318
1319 if (!(hdc = swapchain_get_backup_dc(swapchain)))
1320 {
1321 ERR("Failed to retrieve a device context.\n");
1322 goto out;
1323 }
1324 }
1325
1326 color_format = target->resource.format;
1327
1328 /* In case of ORM_BACKBUFFER, make sure to request an alpha component for
1329 * X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
1330 if (wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER)
1331 {
1332 auxBuffers = TRUE;
1333
1334 if (color_format->id == WINED3DFMT_B4G4R4X4_UNORM)
1335 color_format = wined3d_get_format(gl_info, WINED3DFMT_B4G4R4A4_UNORM);
1336 else if (color_format->id == WINED3DFMT_B8G8R8X8_UNORM)
1337 color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1338 }
1339
1340 /* DirectDraw supports 8bit paletted render targets and these are used by
1341 * old games like StarCraft and C&C. Most modern hardware doesn't support
1342 * 8bit natively so we perform some form of 8bit -> 32bit conversion. The
1343 * conversion (ab)uses the alpha component for storing the palette index.
1344 * For this reason we require a format with 8bit alpha, so request
1345 * A8R8G8B8. */
1346 if (color_format->id == WINED3DFMT_P8_UINT)
1347 color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1348
1349 /* Try to find a pixel format which matches our requirements. */
1350 pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, FALSE);
1351
1352 /* Try to locate a compatible format if we weren't able to find anything. */
1353 if (!pixel_format)
1354 {
1355 TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1356 pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, TRUE);
1357 }
1358
1359 /* If we still don't have a pixel format, something is very wrong as ChoosePixelFormat barely fails */
1360 if (!pixel_format)
1361 {
1362 ERR("Can't find a suitable pixel format.\n");
1363 goto out;
1364 }
1365
1366 DescribePixelFormat(hdc, pixel_format, sizeof(pfd), &pfd);
1367 if (!context_set_pixel_format(gl_info, hdc, pixel_format))
1368 {
1369 ERR("Failed to set pixel format %d on device context %p.\n", pixel_format, hdc);
1370 goto out;
1371 }
1372
1373 ctx = pwglCreateContext(hdc);
1374 if (device->context_count)
1375 {
1376 if (!pwglShareLists(device->contexts[0]->glCtx, ctx))
1377 {
1378 DWORD err = GetLastError();
1379 ERR("wglShareLists(%p, %p) failed, last error %#x.\n",
1380 device->contexts[0]->glCtx, ctx, err);
1381 }
1382 }
1383
1384 if(!ctx) {
1385 ERR("Failed to create a WGL context\n");
1386 goto out;
1387 }
1388
1389 if (!device_context_add(device, ret))
1390 {
1391 ERR("Failed to add the newly created context to the context list\n");
1392 if (!pwglDeleteContext(ctx))
1393 {
1394 DWORD err = GetLastError();
1395 ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, err);
1396 }
1397 goto out;
1398 }
1399
1400 ret->gl_info = gl_info;
1401 ret->state_table = device->StateTable;
1402
1403 /* Mark all states dirty to force a proper initialization of the states
1404 * on the first use of the context. */
1405 for (state = 0; state <= STATE_HIGHEST; ++state)
1406 {
1407 if (ret->state_table[state].representative)
1408 context_invalidate_state(ret, state);
1409 }
1410
1411 ret->swapchain = swapchain;
1412 ret->current_rt = target;
1413 ret->tid = GetCurrentThreadId();
1414
1415 ret->render_offscreen = surface_is_offscreen(target);
1416 ret->draw_buffers_mask = context_generate_rt_mask(GL_BACK);
1417 ret->valid = 1;
1418
1419 ret->glCtx = ctx;
1420 ret->win_handle = swapchain->win_handle;
1421 ret->hdc = hdc;
1422 ret->pixel_format = pixel_format;
1423
1424 if (device->shader_backend->shader_dirtifyable_constants())
1425 {
1426 /* Create the dirty constants array and initialize them to dirty */
1427 ret->vshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
1428 sizeof(*ret->vshader_const_dirty) * device->d3d_vshader_constantF);
1429 ret->pshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
1430 sizeof(*ret->pshader_const_dirty) * device->d3d_pshader_constantF);
1431 memset(ret->vshader_const_dirty, 1,
1432 sizeof(*ret->vshader_const_dirty) * device->d3d_vshader_constantF);
1433 memset(ret->pshader_const_dirty, 1,
1434 sizeof(*ret->pshader_const_dirty) * device->d3d_pshader_constantF);
1435 }
1436
1437 ret->blit_targets = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1438 gl_info->limits.buffers * sizeof(*ret->blit_targets));
1439 if (!ret->blit_targets) goto out;
1440
1441 ret->draw_buffers = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1442 gl_info->limits.buffers * sizeof(*ret->draw_buffers));
1443 if (!ret->draw_buffers) goto out;
1444
1445 ret->free_occlusion_query_size = 4;
1446 ret->free_occlusion_queries = HeapAlloc(GetProcessHeap(), 0,
1447 ret->free_occlusion_query_size * sizeof(*ret->free_occlusion_queries));
1448 if (!ret->free_occlusion_queries) goto out;
1449
1450 list_init(&ret->occlusion_queries);
1451
1452 ret->free_event_query_size = 4;
1453 ret->free_event_queries = HeapAlloc(GetProcessHeap(), 0,
1454 ret->free_event_query_size * sizeof(*ret->free_event_queries));
1455 if (!ret->free_event_queries) goto out;
1456
1457 list_init(&ret->event_queries);
1458
1459 TRACE("Successfully created new context %p\n", ret);
1460
1461 list_init(&ret->fbo_list);
1462 list_init(&ret->fbo_destroy_list);
1463
1464 context_enter(ret);
1465
1466 /* Set up the context defaults */
1467 if (!context_set_current(ret))
1468 {
1469 ERR("Cannot activate context to set up defaults\n");
1470 context_release(ret);
1471 goto out;
1472 }
1473
1474 switch (swapchain->presentParms.PresentationInterval)
1475 {
1476 case WINED3DPRESENT_INTERVAL_IMMEDIATE:
1477 swap_interval = 0;
1478 break;
1479 case WINED3DPRESENT_INTERVAL_DEFAULT:
1480 case WINED3DPRESENT_INTERVAL_ONE:
1481 swap_interval = 1;
1482 break;
1483 case WINED3DPRESENT_INTERVAL_TWO:
1484 swap_interval = 2;
1485 break;
1486 case WINED3DPRESENT_INTERVAL_THREE:
1487 swap_interval = 3;
1488 break;
1489 case WINED3DPRESENT_INTERVAL_FOUR:
1490 swap_interval = 4;
1491 break;
1492 default:
1493 FIXME("Unknown presentation interval %08x\n", swapchain->presentParms.PresentationInterval);
1494 swap_interval = 1;
1495 }
1496
1497 if (gl_info->supported[WGL_EXT_SWAP_CONTROL])
1498 {
1499 if (!GL_EXTCALL(wglSwapIntervalEXT(swap_interval)))
1500 ERR("wglSwapIntervalEXT failed to set swap interval %d for context %p, last error %#x\n",
1501 swap_interval, ret, GetLastError());
1502 }
1503
1504 ENTER_GL();
1505
1506 glGetIntegerv(GL_AUX_BUFFERS, &ret->aux_buffers);
1507
1508 TRACE("Setting up the screen\n");
1509 /* Clear the screen */
1510 glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
1511 checkGLcall("glClearColor");
1512 glClearIndex(0);
1513 glClearDepth(1);
1514 glClearStencil(0xffff);
1515
1516 checkGLcall("glClear");
1517
1518 glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
1519 checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
1520
1521 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
1522 checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
1523
1524 glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1525 checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
1526
1527 glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);
1528 checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);");
1529 glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);
1530 checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);");
1531
1532 if (gl_info->supported[APPLE_CLIENT_STORAGE])
1533 {
1534 /* Most textures will use client storage if supported. Exceptions are non-native power of 2 textures
1535 * and textures in DIB sections(due to the memory protection).
1536 */
1537 glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
1538 checkGLcall("glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE)");
1539 }
1540 if (gl_info->supported[ARB_VERTEX_BLEND])
1541 {
1542 /* Direct3D always uses n-1 weights for n world matrices and uses 1 - sum for the last one
1543 * this is equal to GL_WEIGHT_SUM_UNITY_ARB. Enabling it doesn't do anything unless
1544 * GL_VERTEX_BLEND_ARB isn't enabled too
1545 */
1546 glEnable(GL_WEIGHT_SUM_UNITY_ARB);
1547 checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
1548 }
1549 if (gl_info->supported[NV_TEXTURE_SHADER2])
1550 {
1551 /* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
1552 * the previous texture where to source the offset from is always unit - 1.
1553 */
1554 for (s = 1; s < gl_info->limits.textures; ++s)
1555 {
1556 context_active_texture(ret, gl_info, s);
1557 glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
1558 checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...");
1559 }
1560 }
1561 if (gl_info->supported[ARB_FRAGMENT_PROGRAM])
1562 {
1563 /* MacOS(radeon X1600 at least, but most likely others too) refuses to draw if GLSL and ARBFP are
1564 * enabled, but the currently bound arbfp program is 0. Enabling ARBFP with prog 0 is invalid, but
1565 * GLSL should bypass this. This causes problems in programs that never use the fixed function pipeline,
1566 * because the ARBFP extension is enabled by the ARBFP pipeline at context creation, but no program
1567 * is ever assigned.
1568 *
1569 * So make sure a program is assigned to each context. The first real ARBFP use will set a different
1570 * program and the dummy program is destroyed when the context is destroyed.
1571 */
1572 const char *dummy_program =
1573 "!!ARBfp1.0\n"
1574 "MOV result.color, fragment.color.primary;\n"
1575 "END\n";
1576 GL_EXTCALL(glGenProgramsARB(1, &ret->dummy_arbfp_prog));
1577 GL_EXTCALL(glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, ret->dummy_arbfp_prog));
1578 GL_EXTCALL(glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(dummy_program), dummy_program));
1579 }
1580
1581 if (gl_info->supported[ARB_POINT_SPRITE])
1582 {
1583 for (s = 0; s < gl_info->limits.textures; ++s)
1584 {
1585 context_active_texture(ret, gl_info, s);
1586 glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
1587 checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)");
1588 }
1589 }
1590
1591 if (gl_info->supported[ARB_PROVOKING_VERTEX])
1592 {
1593 GL_EXTCALL(glProvokingVertex(GL_FIRST_VERTEX_CONVENTION));
1594 }
1595 else if (gl_info->supported[EXT_PROVOKING_VERTEX])
1596 {
1597 GL_EXTCALL(glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT));
1598 }
1599 device->frag_pipe->enable_extension(TRUE);
1600
1601 /* If this happens to be the first context for the device, dummy textures
1602 * are not created yet. In that case, they will be created (and bound) by
1603 * create_dummy_textures right after this context is initialized. */
1604 if (device->dummy_texture_2d[0])
1605 bind_dummy_textures(device, ret);
1606
1607 LEAVE_GL();
1608
1609 TRACE("Created context %p.\n", ret);
1610
1611 return ret;
1612
1613 out:
1614 HeapFree(GetProcessHeap(), 0, ret->free_event_queries);
1615 HeapFree(GetProcessHeap(), 0, ret->free_occlusion_queries);
1616 HeapFree(GetProcessHeap(), 0, ret->draw_buffers);
1617 HeapFree(GetProcessHeap(), 0, ret->blit_targets);
1618 HeapFree(GetProcessHeap(), 0, ret->pshader_const_dirty);
1619 HeapFree(GetProcessHeap(), 0, ret->vshader_const_dirty);
1620 HeapFree(GetProcessHeap(), 0, ret);
1621 return NULL;
1622 }
1623
1624 /* Do not call while under the GL lock. */
1625 void context_destroy(struct wined3d_device *device, struct wined3d_context *context)
1626 {
1627 BOOL destroy;
1628
1629 TRACE("Destroying ctx %p\n", context);
1630
1631 if (context->tid == GetCurrentThreadId() || !context->current)
1632 {
1633 context_destroy_gl_resources(context);
1634 TlsSetValue(wined3d_context_tls_idx, NULL);
1635 destroy = TRUE;
1636 }
1637 else
1638 {
1639 context->destroyed = 1;
1640 destroy = FALSE;
1641 }
1642
1643 HeapFree(GetProcessHeap(), 0, context->draw_buffers);
1644 HeapFree(GetProcessHeap(), 0, context->blit_targets);
1645 HeapFree(GetProcessHeap(), 0, context->vshader_const_dirty);
1646 HeapFree(GetProcessHeap(), 0, context->pshader_const_dirty);
1647 device_context_remove(device, context);
1648 if (destroy) HeapFree(GetProcessHeap(), 0, context);
1649 }
1650
1651 /* GL locking is done by the caller */
1652 static inline void set_blit_dimension(UINT width, UINT height) {
1653 glMatrixMode(GL_PROJECTION);
1654 checkGLcall("glMatrixMode(GL_PROJECTION)");
1655 glLoadIdentity();
1656 checkGLcall("glLoadIdentity()");
1657 glOrtho(0, width, 0, height, 0.0, -1.0);
1658 checkGLcall("glOrtho");
1659 glViewport(0, 0, width, height);
1660 checkGLcall("glViewport");
1661 }
1662
1663 /*****************************************************************************
1664 * SetupForBlit
1665 *
1666 * Sets up a context for DirectDraw blitting.
1667 * All texture units are disabled, texture unit 0 is set as current unit
1668 * fog, lighting, blending, alpha test, z test, scissor test, culling disabled
1669 * color writing enabled for all channels
1670 * register combiners disabled, shaders disabled
1671 * world matrix is set to identity, texture matrix 0 too
1672 * projection matrix is setup for drawing screen coordinates
1673 *
1674 * Params:
1675 * This: Device to activate the context for
1676 * context: Context to setup
1677 *
1678 *****************************************************************************/
1679 /* Context activation is done by the caller. */
1680 static void SetupForBlit(struct wined3d_device *device, struct wined3d_context *context)
1681 {
1682 int i;
1683 const struct wined3d_gl_info *gl_info = context->gl_info;
1684 UINT width = context->current_rt->resource.width;
1685 UINT height = context->current_rt->resource.height;
1686 DWORD sampler;
1687
1688 TRACE("Setting up context %p for blitting\n", context);
1689 if(context->last_was_blit) {
1690 if(context->blit_w != width || context->blit_h != height) {
1691 ENTER_GL();
1692 set_blit_dimension(width, height);
1693 LEAVE_GL();
1694 context->blit_w = width; context->blit_h = height;
1695 /* No need to dirtify here, the states are still dirtified because they weren't
1696 * applied since the last SetupForBlit call. Otherwise last_was_blit would not
1697 * be set
1698 */
1699 }
1700 TRACE("Context is already set up for blitting, nothing to do\n");
1701 return;
1702 }
1703 context->last_was_blit = TRUE;
1704
1705 /* TODO: Use a display list */
1706
1707 /* Disable shaders */
1708 ENTER_GL();
1709 device->shader_backend->shader_select(context, FALSE, FALSE);
1710 LEAVE_GL();
1711
1712 context_invalidate_state(context, STATE_VSHADER);
1713 context_invalidate_state(context, STATE_PIXELSHADER);
1714
1715 /* Call ENTER_GL() once for all gl calls below. In theory we should not call
1716 * helper functions in between gl calls. This function is full of context_invalidate_state
1717 * which can safely be called from here, we only lock once instead locking/unlocking
1718 * after each GL call.
1719 */
1720 ENTER_GL();
1721
1722 /* Disable all textures. The caller can then bind a texture it wants to blit
1723 * from
1724 *
1725 * The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
1726 * function texture unit. No need to care for higher samplers
1727 */
1728 for (i = gl_info->limits.textures - 1; i > 0 ; --i)
1729 {
1730 sampler = device->rev_tex_unit_map[i];
1731 context_active_texture(context, gl_info, i);
1732
1733 if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1734 {
1735 glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1736 checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1737 }
1738 glDisable(GL_TEXTURE_3D);
1739 checkGLcall("glDisable GL_TEXTURE_3D");
1740 if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1741 {
1742 glDisable(GL_TEXTURE_RECTANGLE_ARB);
1743 checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1744 }
1745 glDisable(GL_TEXTURE_2D);
1746 checkGLcall("glDisable GL_TEXTURE_2D");
1747
1748 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1749 checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
1750
1751 if (sampler != WINED3D_UNMAPPED_STAGE)
1752 {
1753 if (sampler < MAX_TEXTURES)
1754 context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3DTSS_COLOROP));
1755 context_invalidate_state(context, STATE_SAMPLER(sampler));
1756 }
1757 }
1758 context_active_texture(context, gl_info, 0);
1759
1760 sampler = device->rev_tex_unit_map[0];
1761
1762 if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1763 {
1764 glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1765 checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1766 }
1767 glDisable(GL_TEXTURE_3D);
1768 checkGLcall("glDisable GL_TEXTURE_3D");
1769 if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1770 {
1771 glDisable(GL_TEXTURE_RECTANGLE_ARB);
1772 checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1773 }
1774 glDisable(GL_TEXTURE_2D);
1775 checkGLcall("glDisable GL_TEXTURE_2D");
1776
1777 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1778
1779 glMatrixMode(GL_TEXTURE);
1780 checkGLcall("glMatrixMode(GL_TEXTURE)");
1781 glLoadIdentity();
1782 checkGLcall("glLoadIdentity()");
1783
1784 if (gl_info->supported[EXT_TEXTURE_LOD_BIAS])
1785 {
1786 glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
1787 GL_TEXTURE_LOD_BIAS_EXT,
1788 0.0f);
1789 checkGLcall("glTexEnvf GL_TEXTURE_LOD_BIAS_EXT ...");
1790 }
1791
1792 if (sampler != WINED3D_UNMAPPED_STAGE)
1793 {
1794 if (sampler < MAX_TEXTURES)
1795 {
1796 context_invalidate_state(context, STATE_TRANSFORM(WINED3DTS_TEXTURE0 + sampler));
1797 context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3DTSS_COLOROP));
1798 }
1799 context_invalidate_state(context, STATE_SAMPLER(sampler));
1800 }
1801
1802 /* Other misc states */
1803 glDisable(GL_ALPHA_TEST);
1804 checkGLcall("glDisable(GL_ALPHA_TEST)");
1805 context_invalidate_state(context, STATE_RENDER(WINED3DRS_ALPHATESTENABLE));
1806 glDisable(GL_LIGHTING);
1807 checkGLcall("glDisable GL_LIGHTING");
1808 context_invalidate_state(context, STATE_RENDER(WINED3DRS_LIGHTING));
1809 glDisable(GL_DEPTH_TEST);
1810 checkGLcall("glDisable GL_DEPTH_TEST");
1811 context_invalidate_state(context, STATE_RENDER(WINED3DRS_ZENABLE));
1812 glDisableWINE(GL_FOG);
1813 checkGLcall("glDisable GL_FOG");
1814 context_invalidate_state(context, STATE_RENDER(WINED3DRS_FOGENABLE));
1815 glDisable(GL_BLEND);
1816 checkGLcall("glDisable GL_BLEND");
1817 context_invalidate_state(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE));
1818 glDisable(GL_CULL_FACE);
1819 checkGLcall("glDisable GL_CULL_FACE");
1820 context_invalidate_state(context, STATE_RENDER(WINED3DRS_CULLMODE));
1821 glDisable(GL_STENCIL_TEST);
1822 checkGLcall("glDisable GL_STENCIL_TEST");
1823 context_invalidate_state(context, STATE_RENDER(WINED3DRS_STENCILENABLE));
1824 glDisable(GL_SCISSOR_TEST);
1825 checkGLcall("glDisable GL_SCISSOR_TEST");
1826 context_invalidate_state(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE));
1827 if (gl_info->supported[ARB_POINT_SPRITE])
1828 {
1829 glDisable(GL_POINT_SPRITE_ARB);
1830 checkGLcall("glDisable GL_POINT_SPRITE_ARB");
1831 context_invalidate_state(context, STATE_RENDER(WINED3DRS_POINTSPRITEENABLE));
1832 }
1833 glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
1834 checkGLcall("glColorMask");
1835 context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE));
1836 context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE1));
1837 context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE2));
1838 context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE3));
1839 if (gl_info->supported[EXT_SECONDARY_COLOR])
1840 {
1841 glDisable(GL_COLOR_SUM_EXT);
1842 context_invalidate_state(context, STATE_RENDER(WINED3DRS_SPECULARENABLE));
1843 checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
1844 }
1845
1846 /* Setup transforms */
1847 glMatrixMode(GL_MODELVIEW);
1848 checkGLcall("glMatrixMode(GL_MODELVIEW)");
1849 glLoadIdentity();
1850 checkGLcall("glLoadIdentity()");
1851 context_invalidate_state(context, STATE_TRANSFORM(WINED3DTS_WORLDMATRIX(0)));
1852
1853 context->last_was_rhw = TRUE;
1854 context_invalidate_state(context, STATE_VDECL); /* because of last_was_rhw = TRUE */
1855
1856 glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
1857 glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
1858 glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
1859 glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
1860 glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
1861 glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
1862 context_invalidate_state(context, STATE_RENDER(WINED3DRS_CLIPPING));
1863
1864 set_blit_dimension(width, height);
1865 device->frag_pipe->enable_extension(FALSE);
1866
1867 LEAVE_GL();
1868
1869 context->blit_w = width; context->blit_h = height;
1870 context_invalidate_state(context, STATE_VIEWPORT);
1871 context_invalidate_state(context, STATE_TRANSFORM(WINED3DTS_PROJECTION));
1872 }
1873
1874 static inline BOOL is_rt_mask_onscreen(DWORD rt_mask)
1875 {
1876 return rt_mask & (1 << 31);
1877 }
1878
1879 static inline GLenum draw_buffer_from_rt_mask(DWORD rt_mask)
1880 {
1881 return rt_mask & ~(1 << 31);
1882 }
1883
1884 /* Context activation and GL locking are done by the caller. */
1885 static void context_apply_draw_buffers(struct wined3d_context *context, DWORD rt_mask)
1886 {
1887 if (!rt_mask)
1888 {
1889 glDrawBuffer(GL_NONE);
1890 checkGLcall("glDrawBuffer()");
1891 }
1892 else if (is_rt_mask_onscreen(rt_mask))
1893 {
1894 glDrawBuffer(draw_buffer_from_rt_mask(rt_mask));
1895 checkGLcall("glDrawBuffer()");
1896 }
1897 else
1898 {
1899 if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
1900 {
1901 const struct wined3d_gl_info *gl_info = context->gl_info;
1902 unsigned int i = 0;
1903
1904 while (rt_mask)
1905 {
1906 if (rt_mask & 1)
1907 context->draw_buffers[i] = GL_COLOR_ATTACHMENT0 + i;
1908 else
1909 context->draw_buffers[i] = GL_NONE;
1910
1911 rt_mask >>= 1;
1912 ++i;
1913 }
1914
1915 if (gl_info->supported[ARB_DRAW_BUFFERS])
1916 {
1917 GL_EXTCALL(glDrawBuffersARB(i, context->draw_buffers));
1918 checkGLcall("glDrawBuffers()");
1919 }
1920 else
1921 {
1922 glDrawBuffer(context->draw_buffers[0]);
1923 checkGLcall("glDrawBuffer()");
1924 }
1925 }
1926 else
1927 {
1928 ERR("Unexpected draw buffers mask with backbuffer ORM.\n");
1929 }
1930 }
1931 }
1932
1933 /* GL locking is done by the caller. */
1934 void context_set_draw_buffer(struct wined3d_context *context, GLenum buffer)
1935 {
1936 glDrawBuffer(buffer);
1937 checkGLcall("glDrawBuffer()");
1938 if (context->current_fbo)
1939 context->current_fbo->rt_mask = context_generate_rt_mask(buffer);
1940 else
1941 context->draw_buffers_mask = context_generate_rt_mask(buffer);
1942 }
1943
1944 /* GL locking is done by the caller. */
1945 void context_active_texture(struct wined3d_context *context, const struct wined3d_gl_info *gl_info, unsigned int unit)
1946 {
1947 GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0 + unit));
1948 checkGLcall("glActiveTextureARB");
1949 context->active_texture = unit;
1950 }
1951
1952 void context_bind_texture(struct wined3d_context *context, GLenum target, GLuint name)
1953 {
1954 DWORD unit = context->active_texture;
1955 DWORD old_texture_type = context->texture_type[unit];
1956
1957 if (name)
1958 {
1959 glBindTexture(target, name);
1960 checkGLcall("glBindTexture");
1961 }
1962 else
1963 {
1964 target = GL_NONE;
1965 }
1966
1967 if (old_texture_type != target)
1968 {
1969 const struct wined3d_device *device = context->swapchain->device;
1970
1971 switch (old_texture_type)
1972 {
1973 case GL_NONE:
1974 /* nothing to do */
1975 break;
1976 case GL_TEXTURE_2D:
1977 glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[unit]);
1978 checkGLcall("glBindTexture");
1979 break;
1980 case GL_TEXTURE_RECTANGLE_ARB:
1981 glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[unit]);
1982 checkGLcall("glBindTexture");
1983 break;
1984 case GL_TEXTURE_CUBE_MAP:
1985 glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[unit]);
1986 checkGLcall("glBindTexture");
1987 break;
1988 case GL_TEXTURE_3D:
1989 glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[unit]);
1990 checkGLcall("glBindTexture");
1991 break;
1992 default:
1993 ERR("Unexpected texture target %#x\n", old_texture_type);
1994 }
1995
1996 context->texture_type[unit] = target;
1997 }
1998 }
1999
2000 static void context_set_render_offscreen(struct wined3d_context *context, BOOL offscreen)
2001 {
2002 if (context->render_offscreen == offscreen) return;
2003
2004 context_invalidate_state(context, STATE_POINTSPRITECOORDORIGIN);
2005 context_invalidate_state(context, STATE_TRANSFORM(WINED3DTS_PROJECTION));
2006 context_invalidate_state(context, STATE_VIEWPORT);
2007 context_invalidate_state(context, STATE_SCISSORRECT);
2008 context_invalidate_state(context, STATE_FRONTFACE);
2009 context->render_offscreen = offscreen;
2010 }
2011
2012 static BOOL match_depth_stencil_format(const struct wined3d_format *existing,
2013 const struct wined3d_format *required)
2014 {
2015 BYTE existing_depth, existing_stencil, required_depth, required_stencil;
2016
2017 if (existing == required) return TRUE;
2018 if ((existing->flags & WINED3DFMT_FLAG_FLOAT) != (required->flags & WINED3DFMT_FLAG_FLOAT)) return FALSE;
2019
2020 getDepthStencilBits(existing, &existing_depth, &existing_stencil);
2021 getDepthStencilBits(required, &required_depth, &required_stencil);
2022
2023 if(existing_depth < required_depth) return FALSE;
2024 /* If stencil bits are used the exact amount is required - otherwise wrapping
2025 * won't work correctly */
2026 if(required_stencil && required_stencil != existing_stencil) return FALSE;
2027 return TRUE;
2028 }
2029
2030 /* The caller provides a context */
2031 static void context_validate_onscreen_formats(struct wined3d_context *context,
2032 const struct wined3d_surface *depth_stencil)
2033 {
2034 /* Onscreen surfaces are always in a swapchain */
2035 struct wined3d_swapchain *swapchain = context->current_rt->container.u.swapchain;
2036
2037 if (context->render_offscreen || !depth_stencil) return;
2038 if (match_depth_stencil_format(swapchain->ds_format, depth_stencil->resource.format)) return;
2039
2040 /* TODO: If the requested format would satisfy the needs of the existing one(reverse match),
2041 * or no onscreen depth buffer was created, the OpenGL drawable could be changed to the new
2042 * format. */
2043 WARN("Depth stencil format is not supported by WGL, rendering the backbuffer in an FBO\n");
2044
2045 /* The currently active context is the necessary context to access the swapchain's onscreen buffers */
2046 surface_load_location(context->current_rt, SFLAG_INTEXTURE, NULL);
2047 swapchain->render_to_fbo = TRUE;
2048 swapchain_update_draw_bindings(swapchain);
2049 context_set_render_offscreen(context, TRUE);
2050 }
2051
2052 static DWORD context_generate_rt_mask_no_fbo(const struct wined3d_device *device, const struct wined3d_surface *rt)
2053 {
2054 if (!rt || rt->resource.format->id == WINED3DFMT_NULL)
2055 return 0;
2056 else if (rt->container.type == WINED3D_CONTAINER_SWAPCHAIN)
2057 return context_generate_rt_mask_from_surface(rt);
2058 else
2059 return context_generate_rt_mask(device->offscreenBuffer);
2060 }
2061
2062 /* Context activation is done by the caller. */
2063 void context_apply_blit_state(struct wined3d_context *context, struct wined3d_device *device)
2064 {
2065 struct wined3d_surface *rt = context->current_rt;
2066 DWORD rt_mask, old_mask;
2067
2068 if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2069 {
2070 context_validate_onscreen_formats(context, NULL);
2071
2072 if (context->render_offscreen)
2073 {
2074 surface_internal_preload(rt, SRGB_RGB);
2075
2076 ENTER_GL();
2077 context_apply_fbo_state_blit(context, GL_FRAMEBUFFER, rt, NULL, rt->draw_binding);
2078 LEAVE_GL();
2079 if (rt->resource.format->id != WINED3DFMT_NULL)
2080 rt_mask = 1;
2081 else
2082 rt_mask = 0;
2083 }
2084 else
2085 {
2086 ENTER_GL();
2087 context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
2088 LEAVE_GL();
2089 rt_mask = context_generate_rt_mask_from_surface(rt);
2090 }
2091 }
2092 else
2093 {
2094 rt_mask = context_generate_rt_mask_no_fbo(device, rt);
2095 }
2096
2097 old_mask = context->current_fbo ? context->current_fbo->rt_mask : context->draw_buffers_mask;
2098
2099 ENTER_GL();
2100 if (rt_mask != old_mask)
2101 {
2102 context_apply_draw_buffers(context, rt_mask);
2103 context->draw_buffers_mask = rt_mask;
2104 }
2105
2106 if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2107 {
2108 context_check_fbo_status(context, GL_FRAMEBUFFER);
2109 }
2110 LEAVE_GL();
2111
2112 SetupForBlit(device, context);
2113 context_invalidate_state(context, STATE_FRAMEBUFFER);
2114 }
2115
2116 static BOOL context_validate_rt_config(UINT rt_count,
2117 struct wined3d_surface * const *rts, const struct wined3d_surface *ds)
2118 {
2119 unsigned int i;
2120
2121 if (ds) return TRUE;
2122
2123 for (i = 0; i < rt_count; ++i)
2124 {
2125 if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL)
2126 return TRUE;
2127 }
2128
2129 WARN("Invalid render target config, need at least one attachment.\n");
2130 return FALSE;
2131 }
2132
2133 /* Context activation is done by the caller. */
2134 BOOL context_apply_clear_state(struct wined3d_context *context, struct wined3d_device *device,
2135 UINT rt_count, const struct wined3d_fb_state *fb)
2136 {
2137 DWORD rt_mask = 0, old_mask;
2138 UINT i;
2139 struct wined3d_surface **rts = fb->render_targets;
2140
2141 if (isStateDirty(context, STATE_FRAMEBUFFER) || fb != &device->fb
2142 || rt_count != context->gl_info->limits.buffers)
2143 {
2144 if (!context_validate_rt_config(rt_count, rts, fb->depth_stencil))
2145 return FALSE;
2146
2147 if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2148 {
2149 context_validate_onscreen_formats(context, fb->depth_stencil);
2150
2151 ENTER_GL();
2152
2153 if (!rt_count || surface_is_offscreen(rts[0]))
2154 {
2155 for (i = 0; i < rt_count; ++i)
2156 {
2157 context->blit_targets[i] = rts[i];
2158 if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL)
2159 rt_mask |= (1 << i);
2160 }
2161 while (i < context->gl_info->limits.buffers)
2162 {
2163 context->blit_targets[i] = NULL;
2164 ++i;
2165 }
2166 context_apply_fbo_state(context, GL_FRAMEBUFFER, context->blit_targets, fb->depth_stencil,
2167 rt_count ? rts[0]->draw_binding : SFLAG_INTEXTURE);
2168 glReadBuffer(GL_NONE);
2169 checkGLcall("glReadBuffer");
2170 }
2171 else
2172 {
2173 context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL, SFLAG_INDRAWABLE);
2174 rt_mask = context_generate_rt_mask_from_surface(rts[0]);
2175 }
2176
2177 LEAVE_GL();
2178
2179 /* If the framebuffer is not the device's fb the device's fb has to be reapplied
2180 * next draw. Otherwise we could mark the framebuffer state clean here, once the
2181 * state management allows this */
2182 context_invalidate_state(context, STATE_FRAMEBUFFER);
2183 }
2184 else
2185 {
2186 rt_mask = context_generate_rt_mask_no_fbo(device, rt_count ? rts[0] : NULL);
2187 }
2188 }
2189 else if (wined3d_settings.offscreen_rendering_mode == ORM_FBO
2190 && (!rt_count || surface_is_offscreen(rts[0])))
2191 {
2192 for (i = 0; i < rt_count; ++i)
2193 {
2194 if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL) rt_mask |= (1 << i);
2195 }
2196 }
2197 else
2198 {
2199 rt_mask = context_generate_rt_mask_no_fbo(device, rt_count ? rts[0] : NULL);
2200 }
2201
2202 old_mask = context->current_fbo ? context->current_fbo->rt_mask : context->draw_buffers_mask;
2203
2204 ENTER_GL();
2205 if (rt_mask != old_mask)
2206 {
2207 context_apply_draw_buffers(context, rt_mask);
2208 context->draw_buffers_mask = rt_mask;
2209 context_invalidate_state(context, STATE_FRAMEBUFFER);
2210 }
2211
2212 if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2213 {
2214 context_check_fbo_status(context, GL_FRAMEBUFFER);
2215 }
2216
2217 if (context->last_was_blit)
2218 {
2219 device->frag_pipe->enable_extension(TRUE);
2220 context->last_was_blit = FALSE;
2221 }
2222
2223 /* Blending and clearing should be orthogonal, but tests on the nvidia
2224 * driver show that disabling blending when clearing improves the clearing
2225 * performance incredibly. */
2226 glDisable(GL_BLEND);
2227 glEnable(GL_SCISSOR_TEST);
2228 checkGLcall("glEnable GL_SCISSOR_TEST");
2229 LEAVE_GL();
2230
2231 context_invalidate_state(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE));
2232 context_invalidate_state(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE));
2233 context_invalidate_state(context, STATE_SCISSORRECT);
2234
2235 return TRUE;
2236 }
2237
2238 static DWORD find_draw_buffers_mask(const struct wined3d_context *context, const struct wined3d_device *device)
2239 {
2240 const struct wined3d_state *state = &device->stateBlock->state;
2241 struct wined3d_surface **rts = state->fb->render_targets;
2242 struct wined3d_shader *ps = state->pixel_shader;
2243 DWORD rt_mask, rt_mask_bits;
2244 unsigned int i;
2245
2246 if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) return context_generate_rt_mask_no_fbo(device, rts[0]);
2247 else if (!context->render_offscreen) return context_generate_rt_mask_from_surface(rts[0]);
2248
2249 rt_mask = ps ? ps->reg_maps.rt_mask : 1;
2250 rt_mask &= device->valid_rt_mask;
2251 rt_mask_bits = rt_mask;
2252 i = 0;
2253 while (rt_mask_bits)
2254 {
2255 rt_mask_bits &= ~(1 << i);
2256 if (!rts[i] || rts[i]->resource.format->id == WINED3DFMT_NULL)
2257 rt_mask &= ~(1 << i);
2258
2259 i++;
2260 }
2261
2262 return rt_mask;
2263 }
2264
2265 /* GL locking and context activation are done by the caller */
2266 void context_state_fb(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2267 {
2268 const struct wined3d_device *device = context->swapchain->device;
2269 const struct wined3d_fb_state *fb = state->fb;
2270 DWORD rt_mask = find_draw_buffers_mask(context, device);
2271 DWORD old_mask;
2272
2273 if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2274 {
2275 if (!context->render_offscreen)
2276 {
2277 context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL, SFLAG_INDRAWABLE);
2278 }
2279 else
2280 {
2281 context_apply_fbo_state(context, GL_FRAMEBUFFER, fb->render_targets, fb->depth_stencil,
2282 fb->render_targets[0]->draw_binding);
2283 glReadBuffer(GL_NONE);
2284 checkGLcall("glReadBuffer");
2285 }
2286 }
2287
2288 old_mask = context->current_fbo ? context->current_fbo->rt_mask : context->draw_buffers_mask;
2289 if (rt_mask != old_mask)
2290 {
2291 context_apply_draw_buffers(context, rt_mask);
2292 context->draw_buffers_mask = rt_mask;
2293 }
2294 }
2295
2296 /* GL locking and context activation are done by the caller */
2297 void context_state_drawbuf(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2298 {
2299 const struct wined3d_device *device = context->swapchain->device;
2300 DWORD rt_mask, old_mask;
2301
2302 if (isStateDirty(context, STATE_FRAMEBUFFER)) return;
2303
2304 old_mask = context->current_fbo ? context->current_fbo->rt_mask : context->draw_buffers_mask;
2305 rt_mask = find_draw_buffers_mask(context, device);
2306 if (rt_mask != old_mask)
2307 {
2308 context_apply_draw_buffers(context, rt_mask);
2309 context->draw_buffers_mask = rt_mask;
2310 }
2311 }
2312
2313 /* Context activation is done by the caller. */
2314 BOOL context_apply_draw_state(struct wined3d_context *context, struct wined3d_device *device)
2315 {
2316 const struct wined3d_state *state = &device->stateBlock->state;
2317 const struct StateEntry *state_table = context->state_table;
2318 const struct wined3d_fb_state *fb = state->fb;
2319 unsigned int i;
2320
2321 if (!context_validate_rt_config(context->gl_info->limits.buffers,
2322 fb->render_targets, fb->depth_stencil))
2323 return FALSE;
2324
2325 if (wined3d_settings.offscreen_rendering_mode == ORM_FBO && isStateDirty(context, STATE_FRAMEBUFFER))
2326 {
2327 context_validate_onscreen_formats(context, fb->depth_stencil);
2328 }
2329
2330 /* Preload resources before FBO setup. Texture preload in particular may
2331 * result in changes to the current FBO, due to using e.g. FBO blits for
2332 * updating a resource location. */
2333 device_update_tex_unit_map(device);
2334 device_preload_textures(device);
2335 if (isStateDirty(context, STATE_VDECL) || isStateDirty(context, STATE_STREAMSRC))
2336 device_update_stream_info(device, context->gl_info);
2337
2338 ENTER_GL();
2339 if (context->last_was_blit)
2340 {
2341 device->frag_pipe->enable_extension(TRUE);
2342 }
2343
2344 for (i = 0; i < context->numDirtyEntries; ++i)
2345 {
2346 DWORD rep = context->dirtyArray[i];
2347 DWORD idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
2348 BYTE shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
2349 context->isStateDirty[idx] &= ~(1 << shift);
2350 state_table[rep].apply(context, state, rep);
2351 }
2352
2353 if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2354 {
2355 context_check_fbo_status(context, GL_FRAMEBUFFER);
2356 }
2357
2358 LEAVE_GL();
2359 context->numDirtyEntries = 0; /* This makes the whole list clean */
2360 context->last_was_blit = FALSE;
2361
2362 return TRUE;
2363 }
2364
2365 static void context_setup_target(struct wined3d_device *device,
2366 struct wined3d_context *context, struct wined3d_surface *target)
2367 {
2368 BOOL old_render_offscreen = context->render_offscreen, render_offscreen;
2369
2370 render_offscreen = surface_is_offscreen(target);
2371 if (context->current_rt == target && render_offscreen == old_render_offscreen) return;
2372
2373 /* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
2374 * the alpha blend state changes with different render target formats. */
2375 if (!context->current_rt)
2376 {
2377 context_invalidate_state(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE));
2378 }
2379 else
2380 {
2381 const struct wined3d_format *old = context->current_rt->resource.format;
2382 const struct wined3d_format *new = target->resource.format;
2383
2384 if (old->id != new->id)
2385 {
2386 /* Disable blending when the alpha mask has changed and when a format doesn't support blending. */
2387 if ((old->alpha_mask && !new->alpha_mask) || (!old->alpha_mask && new->alpha_mask)
2388 || !(new->flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
2389 context_invalidate_state(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE));
2390
2391 /* Update sRGB writing when switching between formats that do/do not support sRGB writing */
2392 if ((old->flags & WINED3DFMT_FLAG_SRGB_WRITE) != (new->flags & WINED3DFMT_FLAG_SRGB_WRITE))
2393 context_invalidate_state(context, STATE_RENDER(WINED3DRS_SRGBWRITEENABLE));
2394 }
2395
2396 /* When switching away from an offscreen render target, and we're not
2397 * using FBOs, we have to read the drawable into the texture. This is
2398 * done via PreLoad (and SFLAG_INDRAWABLE set on the surface). There
2399 * are some things that need care though. PreLoad needs a GL context,
2400 * and FindContext is called before the context is activated. It also
2401 * has to be called with the old rendertarget active, otherwise a
2402 * wrong drawable is read. */
2403 if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
2404 && old_render_offscreen && context->current_rt != target)
2405 {
2406 /* Read the back buffer of the old drawable into the destination texture. */
2407 if (context->current_rt->texture_name_srgb)
2408 surface_internal_preload(context->current_rt, SRGB_SRGB);
2409 surface_internal_preload(context->current_rt, SRGB_RGB);
2410 surface_modify_location(context->current_rt, SFLAG_INDRAWABLE, FALSE);
2411 }
2412 }
2413
2414 context->current_rt = target;
2415 context_set_render_offscreen(context, render_offscreen);
2416 }
2417
2418 /* Do not call while under the GL lock. */
2419 struct wined3d_context *context_acquire(struct wined3d_device *device, struct wined3d_surface *target)
2420 {
2421 struct wined3d_context *current_context = context_get_current();
2422 struct wined3d_context *context;
2423
2424 TRACE("device %p, target %p.\n", device, target);
2425
2426 if (current_context && current_context->destroyed)
2427 current_context = NULL;
2428
2429 if (!target)
2430 {
2431 if (current_context
2432 && current_context->current_rt
2433 && current_context->swapchain->device == device)
2434 {
2435 target = current_context->current_rt;
2436 }
2437 else
2438 {
2439 struct wined3d_swapchain *swapchain = device->swapchains[0];
2440 if (swapchain->back_buffers)
2441 target = swapchain->back_buffers[0];
2442 else
2443 target = swapchain->front_buffer;
2444 }
2445 }
2446
2447 if (current_context && current_context->current_rt == target)
2448 {
2449 context = current_context;
2450 }
2451 else if (target->container.type == WINED3D_CONTAINER_SWAPCHAIN)
2452 {
2453 TRACE("Rendering onscreen.\n");
2454
2455 context = swapchain_get_context(target->container.u.swapchain);
2456 }
2457 else
2458 {
2459 TRACE("Rendering offscreen.\n");
2460
2461 /* Stay with the current context if possible. Otherwise use the
2462 * context for the primary swapchain. */
2463 if (current_context && current_context->swapchain->device == device)
2464 context = current_context;
2465 else
2466 context = swapchain_get_context(device->swapchains[0]);
2467 }
2468
2469 context_update_window(context);
2470 context_setup_target(device, context, target);
2471 context_enter(context);
2472 if (!context->valid) return context;
2473
2474 if (context != current_context)
2475 {
2476 if (!context_set_current(context))
2477 {
2478 ERR("Failed to activate the new context.\n");
2479 }
2480 else
2481 {
2482 ENTER_GL();
2483 device->frag_pipe->enable_extension(!context->last_was_blit);
2484 LEAVE_GL();
2485 }
2486
2487 if (context->vshader_const_dirty)
2488 {
2489 memset(context->vshader_const_dirty, 1,
2490 sizeof(*context->vshader_const_dirty) * device->d3d_vshader_constantF);
2491 device->highest_dirty_vs_const = device->d3d_vshader_constantF;
2492 }
2493 if (context->pshader_const_dirty)
2494 {
2495 memset(context->pshader_const_dirty, 1,
2496 sizeof(*context->pshader_const_dirty) * device->d3d_pshader_constantF);
2497 device->highest_dirty_ps_const = device->d3d_pshader_constantF;
2498 }
2499 }
2500 else if (context->restore_ctx)
2501 {
2502 context_set_gl_context(context);
2503 }
2504
2505 return context;
2506 }
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