git.oblomov.eu Git - wine/blob - dlls/wined3d/context.c

   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 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 /* GL locking is done by the caller */
 115 static void context_apply_attachment_filter_states(const struct wined3d_context *context,
 116         IWineD3DSurfaceImpl *surface, DWORD location)
 117 {
 118     /* Update base texture states array */
 119     if (surface->container.type == WINED3D_CONTAINER_TEXTURE)
 120     {
 121         struct wined3d_texture *texture = surface->container.u.texture;
 122         IWineD3DDeviceImpl *device = surface->resource.device;
 123         BOOL update_minfilter = FALSE;
 124         BOOL update_magfilter = FALSE;
 125         struct gl_texture *gl_tex;
 126
 127         switch (location)
 128         {
 129             case SFLAG_INTEXTURE:
 130             case SFLAG_INSRGBTEX:
 131                 gl_tex = wined3d_texture_get_gl_texture(texture,
 132                         context->gl_info, location == SFLAG_INSRGBTEX);
 133                 break;
 134
 135             default:
 136                 ERR("Unsupported location %s (%#x).\n", debug_surflocation(location), location);
 137                 return;
 138         }
 139
 140         if (gl_tex->states[WINED3DTEXSTA_MINFILTER] != WINED3DTEXF_POINT
 141             || gl_tex->states[WINED3DTEXSTA_MIPFILTER] != WINED3DTEXF_NONE)
 142         {
 143             gl_tex->states[WINED3DTEXSTA_MINFILTER] = WINED3DTEXF_POINT;
 144             gl_tex->states[WINED3DTEXSTA_MIPFILTER] = WINED3DTEXF_NONE;
 145             update_minfilter = TRUE;
 146         }
 147
 148         if (gl_tex->states[WINED3DTEXSTA_MAGFILTER] != WINED3DTEXF_POINT)
 149         {
 150             gl_tex->states[WINED3DTEXSTA_MAGFILTER] = WINED3DTEXF_POINT;
 151             update_magfilter = TRUE;
 152         }
 153
 154         if (texture->bind_count)
 155         {
 156             WARN("Render targets should not be bound to a sampler\n");
 157             IWineD3DDeviceImpl_MarkStateDirty(device, STATE_SAMPLER(texture->sampler));
 158         }
 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, gl_tex->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->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(context, depth_stencil, SFLAG_INTEXTURE);
 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 static void context_attach_surface_fbo(const struct wined3d_context *context,
 266         GLenum fbo_target, DWORD idx, IWineD3DSurfaceImpl *surface, DWORD location)
 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 && surface->resource.format->id != WINED3DFMT_NULL)
 273     {
 274         BOOL srgb;
 275
 276         switch (location)
 277         {
 278             case SFLAG_INTEXTURE:
 279             case SFLAG_INSRGBTEX:
 280                 srgb = location == SFLAG_INSRGBTEX;
 281                 surface_prepare_texture(surface, gl_info, srgb);
 282                 context_apply_attachment_filter_states(context, surface, location);
 283                 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_COLOR_ATTACHMENT0 + idx,
 284                         surface->texture_target, surface_get_texture_name(surface, gl_info, srgb),
 285                         surface->texture_level);
 286                 break;
 287
 288             default:
 289                 ERR("Unsupported location %s (%#x).\n", debug_surflocation(location), location);
 290                 break;
 291         }
 292         checkGLcall("glFramebufferTexture2D()");
 293     }
 294     else
 295     {
 296         gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_COLOR_ATTACHMENT0 + idx, GL_TEXTURE_2D, 0, 0);
 297         checkGLcall("glFramebufferTexture2D()");
 298     }
 299 }
 300
 301 /* GL locking is done by the caller */
 302 static void context_check_fbo_status(struct wined3d_context *context, GLenum target)
 303 {
 304     const struct wined3d_gl_info *gl_info = context->gl_info;
 305     GLenum status;
 306
 307     status = gl_info->fbo_ops.glCheckFramebufferStatus(target);
 308     if (status == GL_FRAMEBUFFER_COMPLETE)
 309     {
 310         TRACE("FBO complete\n");
 311     } else {
 312         IWineD3DSurfaceImpl *attachment;
 313         unsigned int i;
 314         FIXME("FBO status %s (%#x)\n", debug_fbostatus(status), status);
 315
 316         if (!context->current_fbo)
 317         {
 318             ERR("FBO 0 is incomplete, driver bug?\n");
 319             return;
 320         }
 321
 322         FIXME("\tLocation %s (%#x).\n", debug_surflocation(context->current_fbo->location),
 323                 context->current_fbo->location);
 324
 325         /* Dump the FBO attachments */
 326         for (i = 0; i < gl_info->limits.buffers; ++i)
 327         {
 328             attachment = context->current_fbo->render_targets[i];
 329             if (attachment)
 330             {
 331                 FIXME("\tColor attachment %d: (%p) %s %ux%u\n",
 332                         i, attachment, debug_d3dformat(attachment->resource.format->id),
 333                         attachment->pow2Width, attachment->pow2Height);
 334             }
 335         }
 336         attachment = context->current_fbo->depth_stencil;
 337         if (attachment)
 338         {
 339             FIXME("\tDepth attachment: (%p) %s %ux%u\n",
 340                     attachment, debug_d3dformat(attachment->resource.format->id),
 341                     attachment->pow2Width, attachment->pow2Height);
 342         }
 343     }
 344 }
 345
 346 static struct fbo_entry *context_create_fbo_entry(struct wined3d_context *context,
 347         IWineD3DSurfaceImpl **render_targets, IWineD3DSurfaceImpl *depth_stencil, DWORD location)
 348 {
 349     const struct wined3d_gl_info *gl_info = context->gl_info;
 350     struct fbo_entry *entry;
 351
 352     entry = HeapAlloc(GetProcessHeap(), 0, sizeof(*entry));
 353     entry->render_targets = HeapAlloc(GetProcessHeap(), 0, gl_info->limits.buffers * sizeof(*entry->render_targets));
 354     memcpy(entry->render_targets, render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets));
 355     entry->depth_stencil = depth_stencil;
 356     entry->location = location;
 357     entry->attached = FALSE;
 358     entry->id = 0;
 359
 360     return entry;
 361 }
 362
 363 /* GL locking is done by the caller */
 364 static void context_reuse_fbo_entry(struct wined3d_context *context, GLenum target,
 365         IWineD3DSurfaceImpl **render_targets, IWineD3DSurfaceImpl *depth_stencil,
 366         DWORD location, struct fbo_entry *entry)
 367 {
 368     const struct wined3d_gl_info *gl_info = context->gl_info;
 369
 370     context_bind_fbo(context, target, &entry->id);
 371     context_clean_fbo_attachments(gl_info, target);
 372
 373     memcpy(entry->render_targets, render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets));
 374     entry->depth_stencil = depth_stencil;
 375     entry->location = location;
 376     entry->attached = FALSE;
 377 }
 378
 379 /* GL locking is done by the caller */
 380 static void context_destroy_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
 381 {
 382     if (entry->id)
 383     {
 384         TRACE("Destroy FBO %d\n", entry->id);
 385         context_destroy_fbo(context, &entry->id);
 386     }
 387     --context->fbo_entry_count;
 388     list_remove(&entry->entry);
 389     HeapFree(GetProcessHeap(), 0, entry->render_targets);
 390     HeapFree(GetProcessHeap(), 0, entry);
 391 }
 392
 393
 394 /* GL locking is done by the caller */
 395 static struct fbo_entry *context_find_fbo_entry(struct wined3d_context *context, GLenum target,
 396         IWineD3DSurfaceImpl **render_targets, IWineD3DSurfaceImpl *depth_stencil, DWORD location)
 397 {
 398     const struct wined3d_gl_info *gl_info = context->gl_info;
 399     struct fbo_entry *entry;
 400
 401     if (depth_stencil && render_targets && render_targets[0])
 402     {
 403         if (depth_stencil->resource.width < render_targets[0]->resource.width ||
 404             depth_stencil->resource.height < render_targets[0]->resource.height)
 405         {
 406             WARN("Depth stencil is smaller than the primary color buffer, disabling\n");
 407             depth_stencil = NULL;
 408         }
 409     }
 410
 411     LIST_FOR_EACH_ENTRY(entry, &context->fbo_list, struct fbo_entry, entry)
 412     {
 413         if (!memcmp(entry->render_targets,
 414                 render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets))
 415                 && entry->depth_stencil == depth_stencil && entry->location == location)
 416         {
 417             list_remove(&entry->entry);
 418             list_add_head(&context->fbo_list, &entry->entry);
 419             return entry;
 420         }
 421     }
 422
 423     if (context->fbo_entry_count < WINED3D_MAX_FBO_ENTRIES)
 424     {
 425         entry = context_create_fbo_entry(context, render_targets, depth_stencil, location);
 426         list_add_head(&context->fbo_list, &entry->entry);
 427         ++context->fbo_entry_count;
 428     }
 429     else
 430     {
 431         entry = LIST_ENTRY(list_tail(&context->fbo_list), struct fbo_entry, entry);
 432         context_reuse_fbo_entry(context, target, render_targets, depth_stencil, location, entry);
 433         list_remove(&entry->entry);
 434         list_add_head(&context->fbo_list, &entry->entry);
 435     }
 436
 437     return entry;
 438 }
 439
 440 /* GL locking is done by the caller */
 441 static void context_apply_fbo_entry(struct wined3d_context *context, GLenum target, struct fbo_entry *entry)
 442 {
 443     const struct wined3d_gl_info *gl_info = context->gl_info;
 444     unsigned int i;
 445
 446     context_bind_fbo(context, target, &entry->id);
 447
 448     if (!entry->attached)
 449     {
 450         /* Apply render targets */
 451         for (i = 0; i < gl_info->limits.buffers; ++i)
 452         {
 453             context_attach_surface_fbo(context, target, i, entry->render_targets[i], entry->location);
 454         }
 455
 456         /* Apply depth targets */
 457         if (entry->depth_stencil)
 458             surface_set_compatible_renderbuffer(entry->depth_stencil, entry->render_targets[0]);
 459         context_attach_depth_stencil_fbo(context, target, entry->depth_stencil, TRUE);
 460
 461         entry->attached = TRUE;
 462     }
 463     else
 464     {
 465         for (i = 0; i < gl_info->limits.buffers; ++i)
 466         {
 467             if (entry->render_targets[i])
 468                 context_apply_attachment_filter_states(context, entry->render_targets[i], entry->location);
 469         }
 470         if (entry->depth_stencil)
 471             context_apply_attachment_filter_states(context, entry->depth_stencil, SFLAG_INTEXTURE);
 472     }
 473 }
 474
 475 /* GL locking is done by the caller */
 476 static void context_apply_fbo_state(struct wined3d_context *context, GLenum target,
 477         IWineD3DSurfaceImpl **render_targets, IWineD3DSurfaceImpl *depth_stencil, DWORD location)
 478 {
 479     struct fbo_entry *entry, *entry2;
 480
 481     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
 482     {
 483         context_destroy_fbo_entry(context, entry);
 484     }
 485
 486     if (context->rebind_fbo)
 487     {
 488         context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
 489         context->rebind_fbo = FALSE;
 490     }
 491
 492     if (render_targets)
 493     {
 494         context->current_fbo = context_find_fbo_entry(context, target, render_targets, depth_stencil, location);
 495         context_apply_fbo_entry(context, target, context->current_fbo);
 496     }
 497     else
 498     {
 499         context->current_fbo = NULL;
 500         context_bind_fbo(context, target, NULL);
 501     }
 502
 503     context_check_fbo_status(context, target);
 504 }
 505
 506 /* GL locking is done by the caller */
 507 void context_apply_fbo_state_blit(struct wined3d_context *context, GLenum target,
 508         IWineD3DSurfaceImpl *render_target, IWineD3DSurfaceImpl *depth_stencil, DWORD location)
 509 {
 510     if (location != SFLAG_INDRAWABLE || surface_is_offscreen(render_target))
 511     {
 512         UINT clear_size = (context->gl_info->limits.buffers - 1) * sizeof(*context->blit_targets);
 513         context->blit_targets[0] = render_target;
 514         if (clear_size) memset(&context->blit_targets[1], 0, clear_size);
 515         context_apply_fbo_state(context, target, context->blit_targets, depth_stencil, location);
 516     }
 517     else
 518     {
 519         context_apply_fbo_state(context, target, NULL, NULL, location);
 520     }
 521 }
 522
 523 /* Context activation is done by the caller. */
 524 void context_alloc_occlusion_query(struct wined3d_context *context, struct wined3d_occlusion_query *query)
 525 {
 526     const struct wined3d_gl_info *gl_info = context->gl_info;
 527
 528     if (context->free_occlusion_query_count)
 529     {
 530         query->id = context->free_occlusion_queries[--context->free_occlusion_query_count];
 531     }
 532     else
 533     {
 534         if (gl_info->supported[ARB_OCCLUSION_QUERY])
 535         {
 536             ENTER_GL();
 537             GL_EXTCALL(glGenQueriesARB(1, &query->id));
 538             checkGLcall("glGenQueriesARB");
 539             LEAVE_GL();
 540
 541             TRACE("Allocated occlusion query %u in context %p.\n", query->id, context);
 542         }
 543         else
 544         {
 545             WARN("Occlusion queries not supported, not allocating query id.\n");
 546             query->id = 0;
 547         }
 548     }
 549
 550     query->context = context;
 551     list_add_head(&context->occlusion_queries, &query->entry);
 552 }
 553
 554 void context_free_occlusion_query(struct wined3d_occlusion_query *query)
 555 {
 556     struct wined3d_context *context = query->context;
 557
 558     list_remove(&query->entry);
 559     query->context = NULL;
 560
 561     if (context->free_occlusion_query_count >= context->free_occlusion_query_size - 1)
 562     {
 563         UINT new_size = context->free_occlusion_query_size << 1;
 564         GLuint *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_occlusion_queries,
 565                 new_size * sizeof(*context->free_occlusion_queries));
 566
 567         if (!new_data)
 568         {
 569             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->id, context);
 570             return;
 571         }
 572
 573         context->free_occlusion_query_size = new_size;
 574         context->free_occlusion_queries = new_data;
 575     }
 576
 577     context->free_occlusion_queries[context->free_occlusion_query_count++] = query->id;
 578 }
 579
 580 /* Context activation is done by the caller. */
 581 void context_alloc_event_query(struct wined3d_context *context, struct wined3d_event_query *query)
 582 {
 583     const struct wined3d_gl_info *gl_info = context->gl_info;
 584
 585     if (context->free_event_query_count)
 586     {
 587         query->object = context->free_event_queries[--context->free_event_query_count];
 588     }
 589     else
 590     {
 591         if (gl_info->supported[ARB_SYNC])
 592         {
 593             /* Using ARB_sync, not much to do here. */
 594             query->object.sync = NULL;
 595             TRACE("Allocated event query %p in context %p.\n", query->object.sync, context);
 596         }
 597         else if (gl_info->supported[APPLE_FENCE])
 598         {
 599             ENTER_GL();
 600             GL_EXTCALL(glGenFencesAPPLE(1, &query->object.id));
 601             checkGLcall("glGenFencesAPPLE");
 602             LEAVE_GL();
 603
 604             TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
 605         }
 606         else if(gl_info->supported[NV_FENCE])
 607         {
 608             ENTER_GL();
 609             GL_EXTCALL(glGenFencesNV(1, &query->object.id));
 610             checkGLcall("glGenFencesNV");
 611             LEAVE_GL();
 612
 613             TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
 614         }
 615         else
 616         {
 617             WARN("Event queries not supported, not allocating query id.\n");
 618             query->object.id = 0;
 619         }
 620     }
 621
 622     query->context = context;
 623     list_add_head(&context->event_queries, &query->entry);
 624 }
 625
 626 void context_free_event_query(struct wined3d_event_query *query)
 627 {
 628     struct wined3d_context *context = query->context;
 629
 630     list_remove(&query->entry);
 631     query->context = NULL;
 632
 633     if (context->free_event_query_count >= context->free_event_query_size - 1)
 634     {
 635         UINT new_size = context->free_event_query_size << 1;
 636         union wined3d_gl_query_object *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_event_queries,
 637                 new_size * sizeof(*context->free_event_queries));
 638
 639         if (!new_data)
 640         {
 641             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->object.id, context);
 642             return;
 643         }
 644
 645         context->free_event_query_size = new_size;
 646         context->free_event_queries = new_data;
 647     }
 648
 649     context->free_event_queries[context->free_event_query_count++] = query->object;
 650 }
 651
 652 typedef void (context_fbo_entry_func_t)(struct wined3d_context *context, struct fbo_entry *entry);
 653
 654 static void context_enum_surface_fbo_entries(IWineD3DDeviceImpl *device,
 655         IWineD3DSurfaceImpl *surface, context_fbo_entry_func_t *callback)
 656 {
 657     UINT i;
 658
 659     for (i = 0; i < device->context_count; ++i)
 660     {
 661         struct wined3d_context *context = device->contexts[i];
 662         const struct wined3d_gl_info *gl_info = context->gl_info;
 663         struct fbo_entry *entry, *entry2;
 664
 665         if (context->current_rt == surface) context->current_rt = NULL;
 666
 667         LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
 668         {
 669             UINT j;
 670
 671             if (entry->depth_stencil == surface)
 672             {
 673                 callback(context, entry);
 674                 continue;
 675             }
 676
 677             for (j = 0; j < gl_info->limits.buffers; ++j)
 678             {
 679                 if (entry->render_targets[j] == surface)
 680                 {
 681                     callback(context, entry);
 682                     break;
 683                 }
 684             }
 685         }
 686     }
 687 }
 688
 689 static void context_queue_fbo_entry_destruction(struct wined3d_context *context, struct fbo_entry *entry)
 690 {
 691     list_remove(&entry->entry);
 692     list_add_head(&context->fbo_destroy_list, &entry->entry);
 693 }
 694
 695 void context_resource_released(struct IWineD3DDeviceImpl *device,
 696         struct wined3d_resource *resource, WINED3DRESOURCETYPE type)
 697 {
 698     if (!device->d3d_initialized) return;
 699
 700     switch (type)
 701     {
 702         case WINED3DRTYPE_SURFACE:
 703             context_enum_surface_fbo_entries(device, surface_from_resource(resource),
 704                     context_queue_fbo_entry_destruction);
 705             break;
 706
 707         default:
 708             break;
 709     }
 710 }
 711
 712 static void context_detach_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
 713 {
 714     entry->attached = FALSE;
 715 }
 716
 717 void context_resource_unloaded(struct IWineD3DDeviceImpl *device,
 718         struct wined3d_resource *resource, WINED3DRESOURCETYPE type)
 719 {
 720     switch (type)
 721     {
 722         case WINED3DRTYPE_SURFACE:
 723             context_enum_surface_fbo_entries(device, surface_from_resource(resource),
 724                     context_detach_fbo_entry);
 725             break;
 726
 727         default:
 728             break;
 729     }
 730 }
 731
 732 void context_surface_update(struct wined3d_context *context, IWineD3DSurfaceImpl *surface)
 733 {
 734     const struct wined3d_gl_info *gl_info = context->gl_info;
 735     struct fbo_entry *entry = context->current_fbo;
 736     unsigned int i;
 737
 738     if (!entry || context->rebind_fbo) return;
 739
 740     for (i = 0; i < gl_info->limits.buffers; ++i)
 741     {
 742         if (surface == entry->render_targets[i])
 743         {
 744             TRACE("Updated surface %p is bound as color attachment %u to the current FBO.\n", surface, i);
 745             context->rebind_fbo = TRUE;
 746             return;
 747         }
 748     }
 749
 750     if (surface == entry->depth_stencil)
 751     {
 752         TRACE("Updated surface %p is bound as depth attachment to the current FBO.\n", surface);
 753         context->rebind_fbo = TRUE;
 754     }
 755 }
 756
 757 static BOOL context_set_pixel_format(const struct wined3d_gl_info *gl_info, HDC dc, int format)
 758 {
 759     int current = GetPixelFormat(dc);
 760
 761     if (current == format) return TRUE;
 762
 763     if (!current)
 764     {
 765         if (!SetPixelFormat(dc, format, NULL))
 766         {
 767             ERR("Failed to set pixel format %d on device context %p, last error %#x.\n",
 768                     format, dc, GetLastError());
 769             return FALSE;
 770         }
 771         return TRUE;
 772     }
 773
 774     /* By default WGL doesn't allow pixel format adjustments but we need it
 775      * here. For this reason there's a Wine specific wglSetPixelFormat()
 776      * which allows us to set the pixel format multiple times. Only use it
 777      * when really needed. */
 778     if (gl_info->supported[WGL_WINE_PIXEL_FORMAT_PASSTHROUGH])
 779     {
 780         if (!GL_EXTCALL(wglSetPixelFormatWINE(dc, format, NULL)))
 781         {
 782             ERR("wglSetPixelFormatWINE failed to set pixel format %d on device context %p.\n",
 783                     format, dc);
 784             return FALSE;
 785         }
 786         return TRUE;
 787     }
 788
 789     /* OpenGL doesn't allow pixel format adjustments. Print an error and
 790      * continue using the old format. There's a big chance that the old
 791      * format works although with a performance hit and perhaps rendering
 792      * errors. */
 793     ERR("Unable to set pixel format %d on device context %p. Already using format %d.\n",
 794             format, dc, current);
 795     return TRUE;
 796 }
 797
 798 static void context_update_window(struct wined3d_context *context)
 799 {
 800     if (context->win_handle == context->swapchain->win_handle)
 801         return;
 802
 803     TRACE("Updating context %p window from %p to %p.\n",
 804             context, context->win_handle, context->swapchain->win_handle);
 805
 806     if (context->valid)
 807     {
 808         if (!ReleaseDC(context->win_handle, context->hdc))
 809         {
 810             ERR("Failed to release device context %p, last error %#x.\n",
 811                     context->hdc, GetLastError());
 812         }
 813     }
 814     else context->valid = 1;
 815
 816     context->win_handle = context->swapchain->win_handle;
 817
 818     if (!(context->hdc = GetDC(context->win_handle)))
 819     {
 820         ERR("Failed to get a device context for window %p.\n", context->win_handle);
 821         goto err;
 822     }
 823
 824     if (!context_set_pixel_format(context->gl_info, context->hdc, context->pixel_format))
 825     {
 826         ERR("Failed to set pixel format %d on device context %p.\n",
 827                 context->pixel_format, context->hdc);
 828         goto err;
 829     }
 830
 831     if (!pwglMakeCurrent(context->hdc, context->glCtx))
 832     {
 833         ERR("Failed to make GL context %p current on device context %p, last error %#x.\n",
 834                 context->glCtx, context->hdc, GetLastError());
 835         goto err;
 836     }
 837
 838     return;
 839
 840 err:
 841     context->valid = 0;
 842 }
 843
 844 /* Do not call while under the GL lock. */
 845 static void context_destroy_gl_resources(struct wined3d_context *context)
 846 {
 847     const struct wined3d_gl_info *gl_info = context->gl_info;
 848     struct wined3d_occlusion_query *occlusion_query;
 849     struct wined3d_event_query *event_query;
 850     struct fbo_entry *entry, *entry2;
 851     HGLRC restore_ctx;
 852     HDC restore_dc;
 853     unsigned int i;
 854
 855     restore_ctx = pwglGetCurrentContext();
 856     restore_dc = pwglGetCurrentDC();
 857
 858     context_update_window(context);
 859     if (context->valid && restore_ctx != context->glCtx)
 860         context->valid = !!pwglMakeCurrent(context->hdc, context->glCtx);
 861     else restore_ctx = NULL;
 862
 863     ENTER_GL();
 864
 865     LIST_FOR_EACH_ENTRY(occlusion_query, &context->occlusion_queries, struct wined3d_occlusion_query, entry)
 866     {
 867         if (context->valid && gl_info->supported[ARB_OCCLUSION_QUERY])
 868             GL_EXTCALL(glDeleteQueriesARB(1, &occlusion_query->id));
 869         occlusion_query->context = NULL;
 870     }
 871
 872     LIST_FOR_EACH_ENTRY(event_query, &context->event_queries, struct wined3d_event_query, entry)
 873     {
 874         if (context->valid)
 875         {
 876             if (gl_info->supported[ARB_SYNC])
 877             {
 878                 if (event_query->object.sync) GL_EXTCALL(glDeleteSync(event_query->object.sync));
 879             }
 880             else if (gl_info->supported[APPLE_FENCE]) GL_EXTCALL(glDeleteFencesAPPLE(1, &event_query->object.id));
 881             else if (gl_info->supported[NV_FENCE]) GL_EXTCALL(glDeleteFencesNV(1, &event_query->object.id));
 882         }
 883         event_query->context = NULL;
 884     }
 885
 886     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
 887     {
 888         if (!context->valid) entry->id = 0;
 889         context_destroy_fbo_entry(context, entry);
 890     }
 891
 892     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
 893     {
 894         if (!context->valid) entry->id = 0;
 895         context_destroy_fbo_entry(context, entry);
 896     }
 897
 898     if (context->valid)
 899     {
 900         if (context->dst_fbo)
 901         {
 902             TRACE("Destroy dst FBO %d\n", context->dst_fbo);
 903             context_destroy_fbo(context, &context->dst_fbo);
 904         }
 905         if (context->dummy_arbfp_prog)
 906         {
 907             GL_EXTCALL(glDeleteProgramsARB(1, &context->dummy_arbfp_prog));
 908         }
 909
 910         if (gl_info->supported[ARB_OCCLUSION_QUERY])
 911             GL_EXTCALL(glDeleteQueriesARB(context->free_occlusion_query_count, context->free_occlusion_queries));
 912
 913         if (gl_info->supported[ARB_SYNC])
 914         {
 915             if (event_query->object.sync) GL_EXTCALL(glDeleteSync(event_query->object.sync));
 916         }
 917         else if (gl_info->supported[APPLE_FENCE])
 918         {
 919             for (i = 0; i < context->free_event_query_count; ++i)
 920             {
 921                 GL_EXTCALL(glDeleteFencesAPPLE(1, &context->free_event_queries[i].id));
 922             }
 923         }
 924         else if (gl_info->supported[NV_FENCE])
 925         {
 926             for (i = 0; i < context->free_event_query_count; ++i)
 927             {
 928                 GL_EXTCALL(glDeleteFencesNV(1, &context->free_event_queries[i].id));
 929             }
 930         }
 931
 932         checkGLcall("context cleanup");
 933     }
 934
 935     LEAVE_GL();
 936
 937     HeapFree(GetProcessHeap(), 0, context->free_occlusion_queries);
 938     HeapFree(GetProcessHeap(), 0, context->free_event_queries);
 939
 940     if (restore_ctx)
 941     {
 942         if (!pwglMakeCurrent(restore_dc, restore_ctx))
 943         {
 944             DWORD err = GetLastError();
 945             ERR("Failed to restore GL context %p on device context %p, last error %#x.\n",
 946                     restore_ctx, restore_dc, err);
 947         }
 948     }
 949     else if (pwglGetCurrentContext() && !pwglMakeCurrent(NULL, NULL))
 950     {
 951         ERR("Failed to disable GL context.\n");
 952     }
 953
 954     ReleaseDC(context->win_handle, context->hdc);
 955
 956     if (!pwglDeleteContext(context->glCtx))
 957     {
 958         DWORD err = GetLastError();
 959         ERR("wglDeleteContext(%p) failed, last error %#x.\n", context->glCtx, err);
 960     }
 961 }
 962
 963 DWORD context_get_tls_idx(void)
 964 {
 965     return wined3d_context_tls_idx;
 966 }
 967
 968 void context_set_tls_idx(DWORD idx)
 969 {
 970     wined3d_context_tls_idx = idx;
 971 }
 972
 973 struct wined3d_context *context_get_current(void)
 974 {
 975     return TlsGetValue(wined3d_context_tls_idx);
 976 }
 977
 978 /* Do not call while under the GL lock. */
 979 BOOL context_set_current(struct wined3d_context *ctx)
 980 {
 981     struct wined3d_context *old = context_get_current();
 982
 983     if (old == ctx)
 984     {
 985         TRACE("Already using D3D context %p.\n", ctx);
 986         return TRUE;
 987     }
 988
 989     if (old)
 990     {
 991         if (old->destroyed)
 992         {
 993             TRACE("Switching away from destroyed context %p.\n", old);
 994             context_destroy_gl_resources(old);
 995             HeapFree(GetProcessHeap(), 0, old);
 996         }
 997         else
 998         {
 999             old->current = 0;
1000         }
1001     }
1002
1003     if (ctx)
1004     {
1005         if (!ctx->valid)
1006         {
1007             ERR("Trying to make invalid context %p current\n", ctx);
1008             return FALSE;
1009         }
1010
1011         TRACE("Switching to D3D context %p, GL context %p, device context %p.\n", ctx, ctx->glCtx, ctx->hdc);
1012         if (!pwglMakeCurrent(ctx->hdc, ctx->glCtx))
1013         {
1014             DWORD err = GetLastError();
1015             ERR("Failed to make GL context %p current on device context %p, last error %#x.\n",
1016                     ctx->glCtx, ctx->hdc, err);
1017             ctx->valid = 0;
1018             pwglMakeCurrent(NULL, NULL);
1019             TlsSetValue(wined3d_context_tls_idx, NULL);
1020             return FALSE;
1021         }
1022         ctx->current = 1;
1023     }
1024     else if(pwglGetCurrentContext())
1025     {
1026         TRACE("Clearing current D3D context.\n");
1027         if (!pwglMakeCurrent(NULL, NULL))
1028         {
1029             DWORD err = GetLastError();
1030             ERR("Failed to clear current GL context, last error %#x.\n", err);
1031             TlsSetValue(wined3d_context_tls_idx, NULL);
1032             return FALSE;
1033         }
1034     }
1035
1036     return TlsSetValue(wined3d_context_tls_idx, ctx);
1037 }
1038
1039 void context_release(struct wined3d_context *context)
1040 {
1041     TRACE("Releasing context %p, level %u.\n", context, context->level);
1042
1043     if (WARN_ON(d3d))
1044     {
1045         if (!context->level)
1046             WARN("Context %p is not active.\n", context);
1047         else if (context != context_get_current())
1048             WARN("Context %p is not the current context.\n", context);
1049     }
1050
1051     if (!--context->level && context->restore_ctx)
1052     {
1053         TRACE("Restoring GL context %p on device context %p.\n", context->restore_ctx, context->restore_dc);
1054         if (!pwglMakeCurrent(context->restore_dc, context->restore_ctx))
1055         {
1056             DWORD err = GetLastError();
1057             ERR("Failed to restore GL context %p on device context %p, last error %#x.\n",
1058                     context->restore_ctx, context->restore_dc, err);
1059             context_set_current(NULL);
1060         }
1061         context->restore_ctx = NULL;
1062         context->restore_dc = NULL;
1063     }
1064 }
1065
1066 static void context_enter(struct wined3d_context *context)
1067 {
1068     TRACE("Entering context %p, level %u.\n", context, context->level + 1);
1069
1070     if (!context->level++)
1071     {
1072         const struct wined3d_context *current_context = context_get_current();
1073         HGLRC current_gl = pwglGetCurrentContext();
1074
1075         if (current_gl && (!current_context || current_context->glCtx != current_gl))
1076         {
1077             TRACE("Another GL context (%p on device context %p) is already current.\n",
1078                     current_gl, pwglGetCurrentDC());
1079             context->restore_ctx = current_gl;
1080             context->restore_dc = pwglGetCurrentDC();
1081         }
1082     }
1083 }
1084
1085 /*****************************************************************************
1086  * Context_MarkStateDirty
1087  *
1088  * Marks a state in a context dirty. Only one context, opposed to
1089  * IWineD3DDeviceImpl_MarkStateDirty, which marks the state dirty in all
1090  * contexts
1091  *
1092  * Params:
1093  *  context: Context to mark the state dirty in
1094  *  state: State to mark dirty
1095  *  StateTable: Pointer to the state table in use(for state grouping)
1096  *
1097  *****************************************************************************/
1098 static void Context_MarkStateDirty(struct wined3d_context *context, DWORD state, const struct StateEntry *StateTable)
1099 {
1100     DWORD rep = StateTable[state].representative;
1101     DWORD idx;
1102     BYTE shift;
1103
1104     if (isStateDirty(context, rep)) return;
1105
1106     context->dirtyArray[context->numDirtyEntries++] = rep;
1107     idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
1108     shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
1109     context->isStateDirty[idx] |= (1 << shift);
1110 }
1111
1112 /* This function takes care of WineD3D pixel format selection. */
1113 static int WineD3D_ChoosePixelFormat(IWineD3DDeviceImpl *This, HDC hdc,
1114         const struct wined3d_format *color_format, const struct wined3d_format *ds_format,
1115         BOOL auxBuffers, int numSamples, BOOL findCompatible)
1116 {
1117     int iPixelFormat=0;
1118     unsigned int matchtry;
1119     short redBits, greenBits, blueBits, alphaBits, colorBits;
1120     short depthBits=0, stencilBits=0;
1121
1122     static const struct
1123     {
1124         BOOL require_aux;
1125         BOOL exact_alpha;
1126         BOOL exact_color;
1127     }
1128     matches[] =
1129     {
1130         /* First, try without alpha match buffers. MacOS supports aux buffers only
1131          * on A8R8G8B8, and we prefer better offscreen rendering over an alpha match.
1132          * Then try without aux buffers - this is the most common cause for not
1133          * finding a pixel format. Also some drivers(the open source ones)
1134          * only offer 32 bit ARB pixel formats. First try without an exact alpha
1135          * match, then try without an exact alpha and color match.
1136          */
1137         { TRUE,  TRUE,  TRUE  },
1138         { TRUE,  FALSE, TRUE  },
1139         { FALSE, TRUE,  TRUE  },
1140         { FALSE, FALSE, TRUE  },
1141         { TRUE,  FALSE, FALSE },
1142         { FALSE, FALSE, FALSE },
1143     };
1144
1145     int i = 0;
1146     int nCfgs = This->adapter->nCfgs;
1147
1148     TRACE("ColorFormat=%s, DepthStencilFormat=%s, auxBuffers=%d, numSamples=%d, findCompatible=%d\n",
1149           debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id),
1150           auxBuffers, numSamples, findCompatible);
1151
1152     if (!getColorBits(color_format, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits))
1153     {
1154         ERR("Unable to get color bits for format %s (%#x)!\n",
1155                 debug_d3dformat(color_format->id), color_format->id);
1156         return 0;
1157     }
1158
1159     getDepthStencilBits(ds_format, &depthBits, &stencilBits);
1160
1161     for(matchtry = 0; matchtry < (sizeof(matches) / sizeof(matches[0])) && !iPixelFormat; matchtry++) {
1162         for(i=0; i<nCfgs; i++) {
1163             BOOL exactDepthMatch = TRUE;
1164             WineD3D_PixelFormat *cfg = &This->adapter->cfgs[i];
1165
1166             /* For now only accept RGBA formats. Perhaps some day we will
1167              * allow floating point formats for pbuffers. */
1168             if(cfg->iPixelType != WGL_TYPE_RGBA_ARB)
1169                 continue;
1170
1171             /* In window mode we need a window drawable format and double buffering. */
1172             if(!(cfg->windowDrawable && cfg->doubleBuffer))
1173                 continue;
1174
1175             /* We like to have aux buffers in backbuffer mode */
1176             if(auxBuffers && !cfg->auxBuffers && matches[matchtry].require_aux)
1177                 continue;
1178
1179             if(matches[matchtry].exact_color) {
1180                 if(cfg->redSize != redBits)
1181                     continue;
1182                 if(cfg->greenSize != greenBits)
1183                     continue;
1184                 if(cfg->blueSize != blueBits)
1185                     continue;
1186             } else {
1187                 if(cfg->redSize < redBits)
1188                     continue;
1189                 if(cfg->greenSize < greenBits)
1190                     continue;
1191                 if(cfg->blueSize < blueBits)
1192                     continue;
1193             }
1194             if(matches[matchtry].exact_alpha) {
1195                 if(cfg->alphaSize != alphaBits)
1196                     continue;
1197             } else {
1198                 if(cfg->alphaSize < alphaBits)
1199                     continue;
1200             }
1201
1202             /* We try to locate a format which matches our requirements exactly. In case of
1203              * depth it is no problem to emulate 16-bit using e.g. 24-bit, so accept that. */
1204             if(cfg->depthSize < depthBits)
1205                 continue;
1206             else if(cfg->depthSize > depthBits)
1207                 exactDepthMatch = FALSE;
1208
1209             /* In all cases make sure the number of stencil bits matches our requirements
1210              * even when we don't need stencil because it could affect performance EXCEPT
1211              * on cards which don't offer depth formats without stencil like the i915 drivers
1212              * on Linux. */
1213             if(stencilBits != cfg->stencilSize && !(This->adapter->brokenStencil && stencilBits <= cfg->stencilSize))
1214                 continue;
1215
1216             /* Check multisampling support */
1217             if(cfg->numSamples != numSamples)
1218                 continue;
1219
1220             /* When we have passed all the checks then we have found a format which matches our
1221              * requirements. Note that we only check for a limit number of capabilities right now,
1222              * so there can easily be a dozen of pixel formats which appear to be the 'same' but
1223              * can still differ in things like multisampling, stereo, SRGB and other flags.
1224              */
1225
1226             /* Exit the loop as we have found a format :) */
1227             if(exactDepthMatch) {
1228                 iPixelFormat = cfg->iPixelFormat;
1229                 break;
1230             } else if(!iPixelFormat) {
1231                 /* In the end we might end up with a format which doesn't exactly match our depth
1232                  * requirements. Accept the first format we found because formats with higher iPixelFormat
1233                  * values tend to have more extended capabilities (e.g. multisampling) which we don't need. */
1234                 iPixelFormat = cfg->iPixelFormat;
1235             }
1236         }
1237     }
1238
1239     /* When findCompatible is set and no suitable format was found, let ChoosePixelFormat choose a pixel format in order not to crash. */
1240     if(!iPixelFormat && !findCompatible) {
1241         ERR("Can't find a suitable iPixelFormat\n");
1242         return FALSE;
1243     } else if(!iPixelFormat) {
1244         PIXELFORMATDESCRIPTOR pfd;
1245
1246         TRACE("Falling back to ChoosePixelFormat as we weren't able to find an exactly matching pixel format\n");
1247         /* PixelFormat selection */
1248         ZeroMemory(&pfd, sizeof(pfd));
1249         pfd.nSize      = sizeof(pfd);
1250         pfd.nVersion   = 1;
1251         pfd.dwFlags    = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW;/*PFD_GENERIC_ACCELERATED*/
1252         pfd.iPixelType = PFD_TYPE_RGBA;
1253         pfd.cAlphaBits = alphaBits;
1254         pfd.cColorBits = colorBits;
1255         pfd.cDepthBits = depthBits;
1256         pfd.cStencilBits = stencilBits;
1257         pfd.iLayerType = PFD_MAIN_PLANE;
1258
1259         iPixelFormat = ChoosePixelFormat(hdc, &pfd);
1260         if(!iPixelFormat) {
1261             /* If this happens something is very wrong as ChoosePixelFormat barely fails */
1262             ERR("Can't find a suitable iPixelFormat\n");
1263             return FALSE;
1264         }
1265     }
1266
1267     TRACE("Found iPixelFormat=%d for ColorFormat=%s, DepthStencilFormat=%s\n",
1268             iPixelFormat, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id));
1269     return iPixelFormat;
1270 }
1271
1272 /* Do not call while under the GL lock. */
1273 struct wined3d_context *context_create(IWineD3DSwapChainImpl *swapchain,
1274         IWineD3DSurfaceImpl *target, const struct wined3d_format *ds_format)
1275 {
1276     IWineD3DDeviceImpl *device = swapchain->device;
1277     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
1278     const struct wined3d_format *color_format;
1279     struct wined3d_context *ret;
1280     PIXELFORMATDESCRIPTOR pfd;
1281     BOOL auxBuffers = FALSE;
1282     int numSamples = 0;
1283     int pixel_format;
1284     unsigned int s;
1285     int swap_interval;
1286     DWORD state;
1287     HGLRC ctx;
1288     HDC hdc;
1289
1290     TRACE("swapchain %p, target %p, window %p.\n", swapchain, target, swapchain->win_handle);
1291
1292     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ret));
1293     if (!ret)
1294     {
1295         ERR("Failed to allocate context memory.\n");
1296         return NULL;
1297     }
1298
1299     if (!(hdc = GetDC(swapchain->win_handle)))
1300     {
1301         ERR("Failed to retrieve a device context.\n");
1302         goto out;
1303     }
1304
1305     color_format = target->resource.format;
1306
1307     /* In case of ORM_BACKBUFFER, make sure to request an alpha component for
1308      * X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
1309     if (wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER)
1310     {
1311         auxBuffers = TRUE;
1312
1313         if (color_format->id == WINED3DFMT_B4G4R4X4_UNORM)
1314             color_format = wined3d_get_format(gl_info, WINED3DFMT_B4G4R4A4_UNORM);
1315         else if (color_format->id == WINED3DFMT_B8G8R8X8_UNORM)
1316             color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1317     }
1318
1319     /* DirectDraw supports 8bit paletted render targets and these are used by
1320      * old games like Starcraft and C&C. Most modern hardware doesn't support
1321      * 8bit natively so we perform some form of 8bit -> 32bit conversion. The
1322      * conversion (ab)uses the alpha component for storing the palette index.
1323      * For this reason we require a format with 8bit alpha, so request
1324      * A8R8G8B8. */
1325     if (color_format->id == WINED3DFMT_P8_UINT)
1326         color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1327
1328     /* D3D only allows multisampling when SwapEffect is set to WINED3DSWAPEFFECT_DISCARD. */
1329     if (swapchain->presentParms.MultiSampleType && (swapchain->presentParms.SwapEffect == WINED3DSWAPEFFECT_DISCARD))
1330     {
1331         if (!gl_info->supported[ARB_MULTISAMPLE])
1332             WARN("The application is requesting multisampling without support.\n");
1333         else
1334         {
1335             TRACE("Requesting multisample type %#x.\n", swapchain->presentParms.MultiSampleType);
1336             numSamples = swapchain->presentParms.MultiSampleType;
1337         }
1338     }
1339
1340     /* Try to find a pixel format which matches our requirements. */
1341     pixel_format = WineD3D_ChoosePixelFormat(device, hdc, color_format, ds_format,
1342             auxBuffers, numSamples, FALSE /* findCompatible */);
1343
1344     /* Try to locate a compatible format if we weren't able to find anything. */
1345     if (!pixel_format)
1346     {
1347         TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1348         pixel_format = WineD3D_ChoosePixelFormat(device, hdc, color_format, ds_format,
1349                 auxBuffers, 0 /* numSamples */, TRUE /* findCompatible */);
1350     }
1351
1352     /* If we still don't have a pixel format, something is very wrong as ChoosePixelFormat barely fails */
1353     if (!pixel_format)
1354     {
1355         ERR("Can't find a suitable pixel format.\n");
1356         goto out;
1357     }
1358
1359     DescribePixelFormat(hdc, pixel_format, sizeof(pfd), &pfd);
1360     if (!context_set_pixel_format(gl_info, hdc, pixel_format))
1361     {
1362         ERR("Failed to set pixel format %d on device context %p.\n", pixel_format, hdc);
1363         goto out;
1364     }
1365
1366     ctx = pwglCreateContext(hdc);
1367     if (device->context_count)
1368     {
1369         if (!pwglShareLists(device->contexts[0]->glCtx, ctx))
1370         {
1371             DWORD err = GetLastError();
1372             ERR("wglShareLists(%p, %p) failed, last error %#x.\n",
1373                     device->contexts[0]->glCtx, ctx, err);
1374         }
1375     }
1376
1377     if(!ctx) {
1378         ERR("Failed to create a WGL context\n");
1379         goto out;
1380     }
1381
1382     if (!device_context_add(device, ret))
1383     {
1384         ERR("Failed to add the newly created context to the context list\n");
1385         if (!pwglDeleteContext(ctx))
1386         {
1387             DWORD err = GetLastError();
1388             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, err);
1389         }
1390         goto out;
1391     }
1392
1393     ret->gl_info = gl_info;
1394
1395     /* Mark all states dirty to force a proper initialization of the states
1396      * on the first use of the context. */
1397     for (state = 0; state <= STATE_HIGHEST; ++state)
1398     {
1399         if (device->StateTable[state].representative)
1400             Context_MarkStateDirty(ret, state, device->StateTable);
1401     }
1402
1403     ret->swapchain = swapchain;
1404     ret->current_rt = target;
1405     ret->tid = GetCurrentThreadId();
1406
1407     ret->render_offscreen = surface_is_offscreen(target);
1408     ret->draw_buffer_dirty = TRUE;
1409     ret->valid = 1;
1410
1411     ret->glCtx = ctx;
1412     ret->win_handle = swapchain->win_handle;
1413     ret->hdc = hdc;
1414     ret->pixel_format = pixel_format;
1415
1416     if (device->shader_backend->shader_dirtifyable_constants())
1417     {
1418         /* Create the dirty constants array and initialize them to dirty */
1419         ret->vshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
1420                 sizeof(*ret->vshader_const_dirty) * device->d3d_vshader_constantF);
1421         ret->pshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
1422                 sizeof(*ret->pshader_const_dirty) * device->d3d_pshader_constantF);
1423         memset(ret->vshader_const_dirty, 1,
1424                sizeof(*ret->vshader_const_dirty) * device->d3d_vshader_constantF);
1425         memset(ret->pshader_const_dirty, 1,
1426                 sizeof(*ret->pshader_const_dirty) * device->d3d_pshader_constantF);
1427     }
1428
1429     ret->blit_targets = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1430             gl_info->limits.buffers * sizeof(*ret->blit_targets));
1431     if (!ret->blit_targets) goto out;
1432
1433     ret->draw_buffers = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1434             gl_info->limits.buffers * sizeof(*ret->draw_buffers));
1435     if (!ret->draw_buffers) goto out;
1436
1437     ret->free_occlusion_query_size = 4;
1438     ret->free_occlusion_queries = HeapAlloc(GetProcessHeap(), 0,
1439             ret->free_occlusion_query_size * sizeof(*ret->free_occlusion_queries));
1440     if (!ret->free_occlusion_queries) goto out;
1441
1442     list_init(&ret->occlusion_queries);
1443
1444     ret->free_event_query_size = 4;
1445     ret->free_event_queries = HeapAlloc(GetProcessHeap(), 0,
1446             ret->free_event_query_size * sizeof(*ret->free_event_queries));
1447     if (!ret->free_event_queries) goto out;
1448
1449     list_init(&ret->event_queries);
1450
1451     TRACE("Successfully created new context %p\n", ret);
1452
1453     list_init(&ret->fbo_list);
1454     list_init(&ret->fbo_destroy_list);
1455
1456     context_enter(ret);
1457
1458     /* Set up the context defaults */
1459     if (!context_set_current(ret))
1460     {
1461         ERR("Cannot activate context to set up defaults\n");
1462         context_release(ret);
1463         goto out;
1464     }
1465
1466     switch (swapchain->presentParms.PresentationInterval)
1467     {
1468         case WINED3DPRESENT_INTERVAL_IMMEDIATE:
1469             swap_interval = 0;
1470             break;
1471         case WINED3DPRESENT_INTERVAL_DEFAULT:
1472         case WINED3DPRESENT_INTERVAL_ONE:
1473             swap_interval = 1;
1474             break;
1475         case WINED3DPRESENT_INTERVAL_TWO:
1476             swap_interval = 2;
1477             break;
1478         case WINED3DPRESENT_INTERVAL_THREE:
1479             swap_interval = 3;
1480             break;
1481         case WINED3DPRESENT_INTERVAL_FOUR:
1482             swap_interval = 4;
1483             break;
1484         default:
1485             FIXME("Unknown presentation interval %08x\n", swapchain->presentParms.PresentationInterval);
1486             swap_interval = 1;
1487     }
1488
1489     if (gl_info->supported[WGL_EXT_SWAP_CONTROL])
1490     {
1491         if (!GL_EXTCALL(wglSwapIntervalEXT(swap_interval)))
1492             ERR("wglSwapIntervalEXT failed to set swap interval %d for context %p, last error %#x\n",
1493                 swap_interval, ret, GetLastError());
1494     }
1495
1496     ENTER_GL();
1497
1498     glGetIntegerv(GL_AUX_BUFFERS, &ret->aux_buffers);
1499
1500     TRACE("Setting up the screen\n");
1501     /* Clear the screen */
1502     glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
1503     checkGLcall("glClearColor");
1504     glClearIndex(0);
1505     glClearDepth(1);
1506     glClearStencil(0xffff);
1507
1508     checkGLcall("glClear");
1509
1510     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
1511     checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
1512
1513     glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
1514     checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
1515
1516     glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1517     checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
1518
1519     glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);
1520     checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);");
1521     glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);
1522     checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);");
1523
1524     if (gl_info->supported[APPLE_CLIENT_STORAGE])
1525     {
1526         /* Most textures will use client storage if supported. Exceptions are non-native power of 2 textures
1527          * and textures in DIB sections(due to the memory protection).
1528          */
1529         glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
1530         checkGLcall("glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE)");
1531     }
1532     if (gl_info->supported[ARB_VERTEX_BLEND])
1533     {
1534         /* Direct3D always uses n-1 weights for n world matrices and uses 1 - sum for the last one
1535          * this is equal to GL_WEIGHT_SUM_UNITY_ARB. Enabling it doesn't do anything unless
1536          * GL_VERTEX_BLEND_ARB isn't enabled too
1537          */
1538         glEnable(GL_WEIGHT_SUM_UNITY_ARB);
1539         checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
1540     }
1541     if (gl_info->supported[NV_TEXTURE_SHADER2])
1542     {
1543         /* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
1544          * the previous texture where to source the offset from is always unit - 1.
1545          */
1546         for (s = 1; s < gl_info->limits.textures; ++s)
1547         {
1548             GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + s));
1549             glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
1550             checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...");
1551         }
1552     }
1553     if (gl_info->supported[ARB_FRAGMENT_PROGRAM])
1554     {
1555         /* MacOS(radeon X1600 at least, but most likely others too) refuses to draw if GLSL and ARBFP are
1556          * enabled, but the currently bound arbfp program is 0. Enabling ARBFP with prog 0 is invalid, but
1557          * GLSL should bypass this. This causes problems in programs that never use the fixed function pipeline,
1558          * because the ARBFP extension is enabled by the ARBFP pipeline at context creation, but no program
1559          * is ever assigned.
1560          *
1561          * So make sure a program is assigned to each context. The first real ARBFP use will set a different
1562          * program and the dummy program is destroyed when the context is destroyed.
1563          */
1564         const char *dummy_program =
1565                 "!!ARBfp1.0\n"
1566                 "MOV result.color, fragment.color.primary;\n"
1567                 "END\n";
1568         GL_EXTCALL(glGenProgramsARB(1, &ret->dummy_arbfp_prog));
1569         GL_EXTCALL(glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, ret->dummy_arbfp_prog));
1570         GL_EXTCALL(glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(dummy_program), dummy_program));
1571     }
1572
1573     for (s = 0; s < gl_info->limits.point_sprite_units; ++s)
1574     {
1575         GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + s));
1576         glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
1577         checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)");
1578     }
1579
1580     if (gl_info->supported[ARB_PROVOKING_VERTEX])
1581     {
1582         GL_EXTCALL(glProvokingVertex(GL_FIRST_VERTEX_CONVENTION));
1583     }
1584     else if (gl_info->supported[EXT_PROVOKING_VERTEX])
1585     {
1586         GL_EXTCALL(glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT));
1587     }
1588
1589     LEAVE_GL();
1590
1591     device->frag_pipe->enable_extension(TRUE);
1592
1593     TRACE("Created context %p.\n", ret);
1594
1595     return ret;
1596
1597 out:
1598     HeapFree(GetProcessHeap(), 0, ret->free_event_queries);
1599     HeapFree(GetProcessHeap(), 0, ret->free_occlusion_queries);
1600     HeapFree(GetProcessHeap(), 0, ret->draw_buffers);
1601     HeapFree(GetProcessHeap(), 0, ret->blit_targets);
1602     HeapFree(GetProcessHeap(), 0, ret->pshader_const_dirty);
1603     HeapFree(GetProcessHeap(), 0, ret->vshader_const_dirty);
1604     HeapFree(GetProcessHeap(), 0, ret);
1605     return NULL;
1606 }
1607
1608 /* Do not call while under the GL lock. */
1609 void context_destroy(IWineD3DDeviceImpl *This, struct wined3d_context *context)
1610 {
1611     BOOL destroy;
1612
1613     TRACE("Destroying ctx %p\n", context);
1614
1615     if (context->tid == GetCurrentThreadId() || !context->current)
1616     {
1617         context_destroy_gl_resources(context);
1618         TlsSetValue(wined3d_context_tls_idx, NULL);
1619         destroy = TRUE;
1620     }
1621     else
1622     {
1623         context->destroyed = 1;
1624         destroy = FALSE;
1625     }
1626
1627     HeapFree(GetProcessHeap(), 0, context->draw_buffers);
1628     HeapFree(GetProcessHeap(), 0, context->blit_targets);
1629     HeapFree(GetProcessHeap(), 0, context->vshader_const_dirty);
1630     HeapFree(GetProcessHeap(), 0, context->pshader_const_dirty);
1631     device_context_remove(This, context);
1632     if (destroy) HeapFree(GetProcessHeap(), 0, context);
1633 }
1634
1635 /* GL locking is done by the caller */
1636 static inline void set_blit_dimension(UINT width, UINT height) {
1637     glMatrixMode(GL_PROJECTION);
1638     checkGLcall("glMatrixMode(GL_PROJECTION)");
1639     glLoadIdentity();
1640     checkGLcall("glLoadIdentity()");
1641     glOrtho(0, width, 0, height, 0.0, -1.0);
1642     checkGLcall("glOrtho");
1643     glViewport(0, 0, width, height);
1644     checkGLcall("glViewport");
1645 }
1646
1647 /*****************************************************************************
1648  * SetupForBlit
1649  *
1650  * Sets up a context for DirectDraw blitting.
1651  * All texture units are disabled, texture unit 0 is set as current unit
1652  * fog, lighting, blending, alpha test, z test, scissor test, culling disabled
1653  * color writing enabled for all channels
1654  * register combiners disabled, shaders disabled
1655  * world matrix is set to identity, texture matrix 0 too
1656  * projection matrix is setup for drawing screen coordinates
1657  *
1658  * Params:
1659  *  This: Device to activate the context for
1660  *  context: Context to setup
1661  *
1662  *****************************************************************************/
1663 /* Context activation is done by the caller. */
1664 static void SetupForBlit(IWineD3DDeviceImpl *This, struct wined3d_context *context)
1665 {
1666     int i;
1667     const struct StateEntry *StateTable = This->StateTable;
1668     const struct wined3d_gl_info *gl_info = context->gl_info;
1669     UINT width = context->current_rt->resource.width;
1670     UINT height = context->current_rt->resource.height;
1671     DWORD sampler;
1672
1673     TRACE("Setting up context %p for blitting\n", context);
1674     if(context->last_was_blit) {
1675         if(context->blit_w != width || context->blit_h != height) {
1676             ENTER_GL();
1677             set_blit_dimension(width, height);
1678             LEAVE_GL();
1679             context->blit_w = width; context->blit_h = height;
1680             /* No need to dirtify here, the states are still dirtified because they weren't
1681              * applied since the last SetupForBlit call. Otherwise last_was_blit would not
1682              * be set
1683              */
1684         }
1685         TRACE("Context is already set up for blitting, nothing to do\n");
1686         return;
1687     }
1688     context->last_was_blit = TRUE;
1689
1690     /* TODO: Use a display list */
1691
1692     /* Disable shaders */
1693     ENTER_GL();
1694     This->shader_backend->shader_select(context, FALSE, FALSE);
1695     LEAVE_GL();
1696
1697     Context_MarkStateDirty(context, STATE_VSHADER, StateTable);
1698     Context_MarkStateDirty(context, STATE_PIXELSHADER, StateTable);
1699
1700     /* Call ENTER_GL() once for all gl calls below. In theory we should not call
1701      * helper functions in between gl calls. This function is full of Context_MarkStateDirty
1702      * which can safely be called from here, we only lock once instead locking/unlocking
1703      * after each GL call.
1704      */
1705     ENTER_GL();
1706
1707     /* Disable all textures. The caller can then bind a texture it wants to blit
1708      * from
1709      *
1710      * The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
1711      * function texture unit. No need to care for higher samplers
1712      */
1713     for (i = gl_info->limits.textures - 1; i > 0 ; --i)
1714     {
1715         sampler = This->rev_tex_unit_map[i];
1716         GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + i));
1717         checkGLcall("glActiveTextureARB");
1718
1719         if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1720         {
1721             glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1722             checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1723         }
1724         glDisable(GL_TEXTURE_3D);
1725         checkGLcall("glDisable GL_TEXTURE_3D");
1726         if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1727         {
1728             glDisable(GL_TEXTURE_RECTANGLE_ARB);
1729             checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1730         }
1731         glDisable(GL_TEXTURE_2D);
1732         checkGLcall("glDisable GL_TEXTURE_2D");
1733
1734         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1735         checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
1736
1737         if (sampler != WINED3D_UNMAPPED_STAGE)
1738         {
1739             if (sampler < MAX_TEXTURES) {
1740                 Context_MarkStateDirty(context, STATE_TEXTURESTAGE(sampler, WINED3DTSS_COLOROP), StateTable);
1741             }
1742             Context_MarkStateDirty(context, STATE_SAMPLER(sampler), StateTable);
1743         }
1744     }
1745     GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
1746     checkGLcall("glActiveTextureARB");
1747
1748     sampler = This->rev_tex_unit_map[0];
1749
1750     if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1751     {
1752         glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1753         checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1754     }
1755     glDisable(GL_TEXTURE_3D);
1756     checkGLcall("glDisable GL_TEXTURE_3D");
1757     if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1758     {
1759         glDisable(GL_TEXTURE_RECTANGLE_ARB);
1760         checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1761     }
1762     glDisable(GL_TEXTURE_2D);
1763     checkGLcall("glDisable GL_TEXTURE_2D");
1764
1765     glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1766
1767     glMatrixMode(GL_TEXTURE);
1768     checkGLcall("glMatrixMode(GL_TEXTURE)");
1769     glLoadIdentity();
1770     checkGLcall("glLoadIdentity()");
1771
1772     if (gl_info->supported[EXT_TEXTURE_LOD_BIAS])
1773     {
1774         glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
1775                   GL_TEXTURE_LOD_BIAS_EXT,
1776                   0.0f);
1777         checkGLcall("glTexEnvf GL_TEXTURE_LOD_BIAS_EXT ...");
1778     }
1779
1780     if (sampler != WINED3D_UNMAPPED_STAGE)
1781     {
1782         if (sampler < MAX_TEXTURES) {
1783             Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_TEXTURE0 + sampler), StateTable);
1784             Context_MarkStateDirty(context, STATE_TEXTURESTAGE(sampler, WINED3DTSS_COLOROP), StateTable);
1785         }
1786         Context_MarkStateDirty(context, STATE_SAMPLER(sampler), StateTable);
1787     }
1788
1789     /* Other misc states */
1790     glDisable(GL_ALPHA_TEST);
1791     checkGLcall("glDisable(GL_ALPHA_TEST)");
1792     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHATESTENABLE), StateTable);
1793     glDisable(GL_LIGHTING);
1794     checkGLcall("glDisable GL_LIGHTING");
1795     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_LIGHTING), StateTable);
1796     glDisable(GL_DEPTH_TEST);
1797     checkGLcall("glDisable GL_DEPTH_TEST");
1798     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ZENABLE), StateTable);
1799     glDisableWINE(GL_FOG);
1800     checkGLcall("glDisable GL_FOG");
1801     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_FOGENABLE), StateTable);
1802     glDisable(GL_BLEND);
1803     checkGLcall("glDisable GL_BLEND");
1804     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
1805     glDisable(GL_CULL_FACE);
1806     checkGLcall("glDisable GL_CULL_FACE");
1807     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CULLMODE), StateTable);
1808     glDisable(GL_STENCIL_TEST);
1809     checkGLcall("glDisable GL_STENCIL_TEST");
1810     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_STENCILENABLE), StateTable);
1811     glDisable(GL_SCISSOR_TEST);
1812     checkGLcall("glDisable GL_SCISSOR_TEST");
1813     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE), StateTable);
1814     if (gl_info->supported[ARB_POINT_SPRITE])
1815     {
1816         glDisable(GL_POINT_SPRITE_ARB);
1817         checkGLcall("glDisable GL_POINT_SPRITE_ARB");
1818         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_POINTSPRITEENABLE), StateTable);
1819     }
1820     glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
1821     checkGLcall("glColorMask");
1822     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE), StateTable);
1823     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE1), StateTable);
1824     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE2), StateTable);
1825     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE3), StateTable);
1826     if (gl_info->supported[EXT_SECONDARY_COLOR])
1827     {
1828         glDisable(GL_COLOR_SUM_EXT);
1829         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SPECULARENABLE), StateTable);
1830         checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
1831     }
1832
1833     /* Setup transforms */
1834     glMatrixMode(GL_MODELVIEW);
1835     checkGLcall("glMatrixMode(GL_MODELVIEW)");
1836     glLoadIdentity();
1837     checkGLcall("glLoadIdentity()");
1838     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_WORLDMATRIX(0)), StateTable);
1839
1840     context->last_was_rhw = TRUE;
1841     Context_MarkStateDirty(context, STATE_VDECL, StateTable); /* because of last_was_rhw = TRUE */
1842
1843     glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
1844     glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
1845     glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
1846     glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
1847     glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
1848     glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
1849     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CLIPPING), StateTable);
1850
1851     set_blit_dimension(width, height);
1852
1853     LEAVE_GL();
1854
1855     context->blit_w = width; context->blit_h = height;
1856     Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
1857     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_PROJECTION), StateTable);
1858
1859     This->frag_pipe->enable_extension(FALSE);
1860 }
1861
1862 /* Do not call while under the GL lock. */
1863 static struct wined3d_context *FindContext(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *target)
1864 {
1865     struct wined3d_context *current_context = context_get_current();
1866     struct wined3d_context *context;
1867
1868     if (current_context && current_context->destroyed) current_context = NULL;
1869
1870     if (!target)
1871     {
1872         if (current_context
1873                 && current_context->current_rt
1874                 && current_context->swapchain->device == This)
1875         {
1876             target = current_context->current_rt;
1877         }
1878         else
1879         {
1880             IWineD3DSwapChainImpl *swapchain = This->swapchains[0];
1881             if (swapchain->back_buffers) target = swapchain->back_buffers[0];
1882             else target = swapchain->front_buffer;
1883         }
1884     }
1885
1886     if (current_context && current_context->current_rt == target)
1887     {
1888         context_update_window(current_context);
1889         return current_context;
1890     }
1891
1892     if (target->container.type == WINED3D_CONTAINER_SWAPCHAIN)
1893     {
1894         TRACE("Rendering onscreen\n");
1895
1896         context = swapchain_get_context(target->container.u.swapchain);
1897     }
1898     else
1899     {
1900         TRACE("Rendering offscreen\n");
1901
1902         /* Stay with the current context if possible. Otherwise use the
1903          * context for the primary swapchain. */
1904         if (current_context && current_context->swapchain->device == This)
1905             context = current_context;
1906         else
1907             context = swapchain_get_context(This->swapchains[0]);
1908     }
1909
1910     context_update_window(context);
1911
1912     return context;
1913 }
1914
1915 /* Context activation is done by the caller. */
1916 static void context_apply_draw_buffers(struct wined3d_context *context, UINT rt_count, IWineD3DSurfaceImpl **rts)
1917 {
1918     if (rt_count && !surface_is_offscreen(rts[0]))
1919     {
1920         ENTER_GL();
1921         glDrawBuffer(surface_get_gl_buffer(rts[0]));
1922         checkGLcall("glDrawBuffer()");
1923         LEAVE_GL();
1924     }
1925     else
1926     {
1927         ENTER_GL();
1928         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
1929         {
1930             const struct wined3d_gl_info *gl_info = context->gl_info;
1931             unsigned int i;
1932
1933             for (i = 0; i < gl_info->limits.buffers; ++i)
1934             {
1935                 if (i < rt_count && rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL)
1936                     context->draw_buffers[i] = GL_COLOR_ATTACHMENT0 + i;
1937                 else
1938                     context->draw_buffers[i] = GL_NONE;
1939             }
1940
1941             if (gl_info->supported[ARB_DRAW_BUFFERS])
1942             {
1943                 GL_EXTCALL(glDrawBuffersARB(gl_info->limits.buffers, context->draw_buffers));
1944                 checkGLcall("glDrawBuffers()");
1945             }
1946             else
1947             {
1948                 glDrawBuffer(context->draw_buffers[0]);
1949                 checkGLcall("glDrawBuffer()");
1950             }
1951         }
1952         else
1953         {
1954             glDrawBuffer(rt_count ? rts[0]->resource.device->offscreenBuffer : GL_NONE);
1955             checkGLcall("glDrawBuffer()");
1956         }
1957         LEAVE_GL();
1958     }
1959 }
1960
1961 /* GL locking is done by the caller. */
1962 void context_set_draw_buffer(struct wined3d_context *context, GLenum buffer)
1963 {
1964     glDrawBuffer(buffer);
1965     checkGLcall("glDrawBuffer()");
1966     context->draw_buffer_dirty = TRUE;
1967 }
1968
1969 static inline void context_set_render_offscreen(struct wined3d_context *context, const struct StateEntry *StateTable,
1970         BOOL offscreen)
1971 {
1972     if (context->render_offscreen == offscreen) return;
1973
1974     Context_MarkStateDirty(context, STATE_POINTSPRITECOORDORIGIN, StateTable);
1975     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_PROJECTION), StateTable);
1976     Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
1977     Context_MarkStateDirty(context, STATE_SCISSORRECT, StateTable);
1978     Context_MarkStateDirty(context, STATE_FRONTFACE, StateTable);
1979     context->render_offscreen = offscreen;
1980 }
1981
1982 static BOOL match_depth_stencil_format(const struct wined3d_format *existing,
1983         const struct wined3d_format *required)
1984 {
1985     short existing_depth, existing_stencil, required_depth, required_stencil;
1986
1987     if (existing == required) return TRUE;
1988     if ((existing->flags & WINED3DFMT_FLAG_FLOAT) != (required->flags & WINED3DFMT_FLAG_FLOAT)) return FALSE;
1989
1990     getDepthStencilBits(existing, &existing_depth, &existing_stencil);
1991     getDepthStencilBits(required, &required_depth, &required_stencil);
1992
1993     if(existing_depth < required_depth) return FALSE;
1994     /* If stencil bits are used the exact amount is required - otherwise wrapping
1995      * won't work correctly */
1996     if(required_stencil && required_stencil != existing_stencil) return FALSE;
1997     return TRUE;
1998 }
1999 /* The caller provides a context */
2000 static void context_validate_onscreen_formats(IWineD3DDeviceImpl *device,
2001         struct wined3d_context *context, IWineD3DSurfaceImpl *depth_stencil)
2002 {
2003     /* Onscreen surfaces are always in a swapchain */
2004     IWineD3DSwapChainImpl *swapchain = context->current_rt->container.u.swapchain;
2005
2006     if (context->render_offscreen || !depth_stencil) return;
2007     if (match_depth_stencil_format(swapchain->ds_format, depth_stencil->resource.format)) return;
2008
2009     /* TODO: If the requested format would satisfy the needs of the existing one(reverse match),
2010      * or no onscreen depth buffer was created, the OpenGL drawable could be changed to the new
2011      * format. */
2012     WARN("Depth stencil format is not supported by WGL, rendering the backbuffer in an FBO\n");
2013
2014     /* The currently active context is the necessary context to access the swapchain's onscreen buffers */
2015     surface_load_location(context->current_rt, SFLAG_INTEXTURE, NULL);
2016     swapchain->render_to_fbo = TRUE;
2017     context_set_render_offscreen(context, device->StateTable, TRUE);
2018 }
2019
2020 /* Context activation is done by the caller. */
2021 void context_apply_blit_state(struct wined3d_context *context, IWineD3DDeviceImpl *device)
2022 {
2023     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2024     {
2025         context_validate_onscreen_formats(device, context, NULL);
2026
2027         if (context->render_offscreen)
2028         {
2029             surface_internal_preload(context->current_rt, SRGB_RGB);
2030
2031             ENTER_GL();
2032             context_apply_fbo_state_blit(context, GL_FRAMEBUFFER, context->current_rt, NULL, SFLAG_INTEXTURE);
2033             LEAVE_GL();
2034         }
2035         else
2036         {
2037             ENTER_GL();
2038             context_bind_fbo(context, GL_FRAMEBUFFER, NULL);
2039             LEAVE_GL();
2040         }
2041
2042         context->draw_buffer_dirty = TRUE;
2043     }
2044
2045     if (context->draw_buffer_dirty)
2046     {
2047         context_apply_draw_buffers(context, 1, &context->current_rt);
2048         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
2049             context->draw_buffer_dirty = FALSE;
2050     }
2051
2052     SetupForBlit(device, context);
2053 }
2054
2055 static BOOL context_validate_rt_config(UINT rt_count,
2056         IWineD3DSurfaceImpl **rts, IWineD3DSurfaceImpl *ds)
2057 {
2058     unsigned int i;
2059
2060     if (ds) return TRUE;
2061
2062     for (i = 0; i < rt_count; ++i)
2063     {
2064         if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL)
2065             return TRUE;
2066     }
2067
2068     WARN("Invalid render target config, need at least one attachment.\n");
2069     return FALSE;
2070 }
2071
2072 /* Context activation is done by the caller. */
2073 BOOL context_apply_clear_state(struct wined3d_context *context, IWineD3DDeviceImpl *device,
2074         UINT rt_count, IWineD3DSurfaceImpl **rts, IWineD3DSurfaceImpl *depth_stencil)
2075 {
2076     const struct StateEntry *state_table = device->StateTable;
2077     UINT i;
2078
2079     if (!context_validate_rt_config(rt_count, rts, depth_stencil))
2080         return FALSE;
2081
2082
2083     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2084     {
2085         context_validate_onscreen_formats(device, context, depth_stencil);
2086
2087         ENTER_GL();
2088
2089         if (!rt_count || surface_is_offscreen(rts[0]))
2090         {
2091             for (i = 0; i < rt_count; ++i)
2092             {
2093                 context->blit_targets[i] = rts[i];
2094             }
2095             while (i < context->gl_info->limits.buffers)
2096             {
2097                 context->blit_targets[i] = NULL;
2098                 ++i;
2099             }
2100             context_apply_fbo_state(context, GL_FRAMEBUFFER, context->blit_targets, depth_stencil, SFLAG_INTEXTURE);
2101         }
2102         else
2103         {
2104             context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL, SFLAG_INDRAWABLE);
2105         }
2106
2107         LEAVE_GL();
2108     }
2109
2110     context_apply_draw_buffers(context, rt_count, rts);
2111     context->draw_buffer_dirty = TRUE;
2112
2113     if (context->last_was_blit)
2114     {
2115         device->frag_pipe->enable_extension(TRUE);
2116     }
2117
2118     /* Blending and clearing should be orthogonal, but tests on the nvidia
2119      * driver show that disabling blending when clearing improves the clearing
2120      * performance incredibly. */
2121     ENTER_GL();
2122     glDisable(GL_BLEND);
2123     glEnable(GL_SCISSOR_TEST);
2124     checkGLcall("glEnable GL_SCISSOR_TEST");
2125     LEAVE_GL();
2126
2127     context->last_was_blit = FALSE;
2128     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), state_table);
2129     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE), state_table);
2130     Context_MarkStateDirty(context, STATE_SCISSORRECT, state_table);
2131
2132     return TRUE;
2133 }
2134
2135 /* Context activation is done by the caller. */
2136 BOOL context_apply_draw_state(struct wined3d_context *context, IWineD3DDeviceImpl *device)
2137 {
2138     const struct StateEntry *state_table = device->StateTable;
2139     unsigned int i;
2140
2141     if (!context_validate_rt_config(context->gl_info->limits.buffers,
2142             device->render_targets, device->depth_stencil))
2143         return FALSE;
2144
2145     /* Preload resources before FBO setup. Texture preload in particular may
2146      * result in changes to the current FBO, due to using e.g. FBO blits for
2147      * updating a resource location. */
2148     IWineD3DDeviceImpl_FindTexUnitMap(device);
2149     device_preload_textures(device);
2150     if (isStateDirty(context, STATE_VDECL))
2151         device_update_stream_info(device, context->gl_info);
2152
2153     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2154     {
2155         context_validate_onscreen_formats(device, context, device->depth_stencil);
2156
2157         if (!context->render_offscreen)
2158         {
2159             ENTER_GL();
2160             context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL, SFLAG_INDRAWABLE);
2161             LEAVE_GL();
2162         }
2163         else
2164         {
2165             ENTER_GL();
2166             context_apply_fbo_state(context, GL_FRAMEBUFFER, device->render_targets,
2167                     device->depth_stencil, SFLAG_INTEXTURE);
2168             LEAVE_GL();
2169         }
2170     }
2171
2172     if (context->draw_buffer_dirty)
2173     {
2174         context_apply_draw_buffers(context, context->gl_info->limits.buffers, device->render_targets);
2175         context->draw_buffer_dirty = FALSE;
2176     }
2177
2178     if (context->last_was_blit)
2179     {
2180         device->frag_pipe->enable_extension(TRUE);
2181     }
2182
2183     ENTER_GL();
2184     for (i = 0; i < context->numDirtyEntries; ++i)
2185     {
2186         DWORD rep = context->dirtyArray[i];
2187         DWORD idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
2188         BYTE shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
2189         context->isStateDirty[idx] &= ~(1 << shift);
2190         state_table[rep].apply(rep, device->stateBlock, context);
2191     }
2192     LEAVE_GL();
2193     context->numDirtyEntries = 0; /* This makes the whole list clean */
2194     context->last_was_blit = FALSE;
2195
2196     return TRUE;
2197 }
2198
2199 static void context_setup_target(IWineD3DDeviceImpl *device,
2200         struct wined3d_context *context, IWineD3DSurfaceImpl *target)
2201 {
2202     BOOL old_render_offscreen = context->render_offscreen, render_offscreen;
2203     const struct StateEntry *StateTable = device->StateTable;
2204
2205     if (!target) return;
2206     render_offscreen = surface_is_offscreen(target);
2207     if (context->current_rt == target && render_offscreen == old_render_offscreen) return;
2208
2209     /* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
2210      * the alpha blend state changes with different render target formats. */
2211     if (!context->current_rt)
2212     {
2213         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
2214     }
2215     else
2216     {
2217         const struct wined3d_format *old = context->current_rt->resource.format;
2218         const struct wined3d_format *new = target->resource.format;
2219
2220         if (old->id != new->id)
2221         {
2222             /* Disable blending when the alpha mask has changed and when a format doesn't support blending. */
2223             if ((old->alpha_mask && !new->alpha_mask) || (!old->alpha_mask && new->alpha_mask)
2224                     || !(new->flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
2225             {
2226                 Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
2227             }
2228             /* Update sRGB writing when switching between formats that do/do not support sRGB writing */
2229             if ((old->flags & WINED3DFMT_FLAG_SRGB_WRITE) != (new->flags & WINED3DFMT_FLAG_SRGB_WRITE))
2230             {
2231                 Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SRGBWRITEENABLE), StateTable);
2232             }
2233         }
2234
2235         /* When switching away from an offscreen render target, and we're not
2236          * using FBOs, we have to read the drawable into the texture. This is
2237          * done via PreLoad (and SFLAG_INDRAWABLE set on the surface). There
2238          * are some things that need care though. PreLoad needs a GL context,
2239          * and FindContext is called before the context is activated. It also
2240          * has to be called with the old rendertarget active, otherwise a
2241          * wrong drawable is read. */
2242         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
2243                 && old_render_offscreen && context->current_rt != target)
2244         {
2245             /* Read the back buffer of the old drawable into the destination texture. */
2246             if (context->current_rt->texture_name_srgb)
2247             {
2248                 surface_internal_preload(context->current_rt, SRGB_BOTH);
2249             }
2250             else
2251             {
2252                 surface_internal_preload(context->current_rt, SRGB_RGB);
2253             }
2254
2255             surface_modify_location(context->current_rt, SFLAG_INDRAWABLE, FALSE);
2256         }
2257     }
2258
2259     context->draw_buffer_dirty = TRUE;
2260     context->current_rt = target;
2261     context_set_render_offscreen(context, StateTable, render_offscreen);
2262 }
2263
2264 /* Do not call while under the GL lock. */
2265 struct wined3d_context *context_acquire(IWineD3DDeviceImpl *device, IWineD3DSurfaceImpl *target)
2266 {
2267     struct wined3d_context *current_context = context_get_current();
2268     struct wined3d_context *context;
2269
2270     TRACE("device %p, target %p.\n", device, target);
2271
2272     context = FindContext(device, target);
2273     context_setup_target(device, context, target);
2274     context_enter(context);
2275     if (!context->valid) return context;
2276
2277     if (context != current_context)
2278     {
2279         if (!context_set_current(context)) ERR("Failed to activate the new context.\n");
2280         else device->frag_pipe->enable_extension(!context->last_was_blit);
2281
2282         if (context->vshader_const_dirty)
2283         {
2284             memset(context->vshader_const_dirty, 1,
2285                     sizeof(*context->vshader_const_dirty) * device->d3d_vshader_constantF);
2286             device->highest_dirty_vs_const = device->d3d_vshader_constantF;
2287         }
2288         if (context->pshader_const_dirty)
2289         {
2290             memset(context->pshader_const_dirty, 1,
2291                    sizeof(*context->pshader_const_dirty) * device->d3d_pshader_constantF);
2292             device->highest_dirty_ps_const = device->d3d_pshader_constantF;
2293         }
2294     }
2295     else if (context->restore_ctx)
2296     {
2297         if (!pwglMakeCurrent(context->hdc, context->glCtx))
2298         {
2299             DWORD err = GetLastError();
2300             ERR("Failed to make GL context %p current on device context %p, last error %#x.\n",
2301                     context->glCtx, context->hdc, err);
2302             context->valid = 0;
2303             pwglMakeCurrent(NULL, NULL);
2304         }
2305     }
2306
2307     return context;
2308 }