dlls/wined3d/context.c

   1 /*
   2  * Context and render target management in wined3d
   3  *
   4  * Copyright 2007-2011, 2013 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 "wine/port.h"
  24
  25 #include <stdio.h>
  26 #ifdef HAVE_FLOAT_H
  27 # include <float.h>
  28 #endif
  29
  30 #include "wined3d_private.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  33 WINE_DECLARE_DEBUG_CHANNEL(d3d_perf);
  34 WINE_DECLARE_DEBUG_CHANNEL(d3d_synchronous);
  35
  36 #define WINED3D_MAX_FBO_ENTRIES 64
  37
  38 static DWORD wined3d_context_tls_idx;
  39
  40 /* FBO helper functions */
  41
  42 /* Context activation is done by the caller. */
  43 static void context_bind_fbo(struct wined3d_context *context, GLenum target, GLuint fbo)
  44 {
  45     const struct wined3d_gl_info *gl_info = context->gl_info;
  46
  47     switch (target)
  48     {
  49         case GL_READ_FRAMEBUFFER:
  50             if (context->fbo_read_binding == fbo) return;
  51             context->fbo_read_binding = fbo;
  52             break;
  53
  54         case GL_DRAW_FRAMEBUFFER:
  55             if (context->fbo_draw_binding == fbo) return;
  56             context->fbo_draw_binding = fbo;
  57             break;
  58
  59         case GL_FRAMEBUFFER:
  60             if (context->fbo_read_binding == fbo
  61                     && context->fbo_draw_binding == fbo) return;
  62             context->fbo_read_binding = fbo;
  63             context->fbo_draw_binding = fbo;
  64             break;
  65
  66         default:
  67             FIXME("Unhandled target %#x.\n", target);
  68             break;
  69     }
  70
  71     gl_info->fbo_ops.glBindFramebuffer(target, fbo);
  72     checkGLcall("glBindFramebuffer()");
  73 }
  74
  75 /* Context activation is done by the caller. */
  76 static void context_clean_fbo_attachments(const struct wined3d_gl_info *gl_info, GLenum target)
  77 {
  78     unsigned int i;
  79
  80     for (i = 0; i < gl_info->limits.buffers; ++i)
  81     {
  82         gl_info->fbo_ops.glFramebufferTexture2D(target, GL_COLOR_ATTACHMENT0 + i, GL_TEXTURE_2D, 0, 0);
  83         checkGLcall("glFramebufferTexture2D()");
  84     }
  85     gl_info->fbo_ops.glFramebufferTexture2D(target, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
  86     checkGLcall("glFramebufferTexture2D()");
  87
  88     gl_info->fbo_ops.glFramebufferTexture2D(target, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
  89     checkGLcall("glFramebufferTexture2D()");
  90 }
  91
  92 /* Context activation is done by the caller. */
  93 static void context_destroy_fbo(struct wined3d_context *context, GLuint fbo)
  94 {
  95     const struct wined3d_gl_info *gl_info = context->gl_info;
  96
  97     context_bind_fbo(context, GL_FRAMEBUFFER, fbo);
  98     context_clean_fbo_attachments(gl_info, GL_FRAMEBUFFER);
  99     context_bind_fbo(context, GL_FRAMEBUFFER, 0);
 100
 101     gl_info->fbo_ops.glDeleteFramebuffers(1, &fbo);
 102     checkGLcall("glDeleteFramebuffers()");
 103 }
 104
 105 static void context_attach_depth_stencil_rb(const struct wined3d_gl_info *gl_info,
 106         GLenum fbo_target, DWORD format_flags, GLuint rb)
 107 {
 108     if (format_flags & WINED3DFMT_FLAG_DEPTH)
 109     {
 110         gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rb);
 111         checkGLcall("glFramebufferRenderbuffer()");
 112     }
 113
 114     if (format_flags & WINED3DFMT_FLAG_STENCIL)
 115     {
 116         gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rb);
 117         checkGLcall("glFramebufferRenderbuffer()");
 118     }
 119 }
 120
 121 /* Context activation is done by the caller. */
 122 static void context_attach_depth_stencil_fbo(struct wined3d_context *context,
 123         GLenum fbo_target, struct wined3d_surface *depth_stencil, DWORD location)
 124 {
 125     const struct wined3d_gl_info *gl_info = context->gl_info;
 126
 127     TRACE("Attach depth stencil %p\n", depth_stencil);
 128
 129     if (depth_stencil)
 130     {
 131         DWORD format_flags = depth_stencil->resource.format->flags;
 132
 133         if (depth_stencil->current_renderbuffer)
 134         {
 135             context_attach_depth_stencil_rb(gl_info, fbo_target,
 136                     format_flags, depth_stencil->current_renderbuffer->id);
 137         }
 138         else
 139         {
 140             switch (location)
 141             {
 142                 case WINED3D_LOCATION_TEXTURE_RGB:
 143                 case WINED3D_LOCATION_TEXTURE_SRGB:
 144                     surface_prepare_texture(depth_stencil, context, FALSE);
 145
 146                     if (format_flags & WINED3DFMT_FLAG_DEPTH)
 147                     {
 148                         gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT,
 149                                 depth_stencil->texture_target, depth_stencil->container->texture_rgb.name,
 150                                 depth_stencil->texture_level);
 151                         checkGLcall("glFramebufferTexture2D()");
 152                     }
 153
 154                     if (format_flags & WINED3DFMT_FLAG_STENCIL)
 155                     {
 156                         gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT,
 157                                 depth_stencil->texture_target, depth_stencil->container->texture_rgb.name,
 158                                 depth_stencil->texture_level);
 159                         checkGLcall("glFramebufferTexture2D()");
 160                     }
 161                     break;
 162
 163                 case WINED3D_LOCATION_RB_MULTISAMPLE:
 164                     surface_prepare_rb(depth_stencil, gl_info, TRUE);
 165                     context_attach_depth_stencil_rb(gl_info, fbo_target,
 166                             format_flags, depth_stencil->rb_multisample);
 167                     break;
 168
 169                 case WINED3D_LOCATION_RB_RESOLVED:
 170                     surface_prepare_rb(depth_stencil, gl_info, FALSE);
 171                     context_attach_depth_stencil_rb(gl_info, fbo_target,
 172                             format_flags, depth_stencil->rb_resolved);
 173                     break;
 174
 175                 default:
 176                     ERR("Unsupported location %s (%#x).\n", wined3d_debug_location(location), location);
 177                     break;
 178             }
 179         }
 180
 181         if (!(format_flags & WINED3DFMT_FLAG_DEPTH))
 182         {
 183             gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
 184             checkGLcall("glFramebufferTexture2D()");
 185         }
 186
 187         if (!(format_flags & WINED3DFMT_FLAG_STENCIL))
 188         {
 189             gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
 190             checkGLcall("glFramebufferTexture2D()");
 191         }
 192     }
 193     else
 194     {
 195         gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
 196         checkGLcall("glFramebufferTexture2D()");
 197
 198         gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
 199         checkGLcall("glFramebufferTexture2D()");
 200     }
 201 }
 202
 203 /* Context activation is done by the caller. */
 204 static void context_attach_surface_fbo(struct wined3d_context *context,
 205         GLenum fbo_target, DWORD idx, struct wined3d_surface *surface, DWORD location)
 206 {
 207     const struct wined3d_gl_info *gl_info = context->gl_info;
 208
 209     TRACE("Attach surface %p to %u\n", surface, idx);
 210
 211     if (surface && surface->resource.format->id != WINED3DFMT_NULL)
 212     {
 213         BOOL srgb;
 214
 215         switch (location)
 216         {
 217             case WINED3D_LOCATION_TEXTURE_RGB:
 218             case WINED3D_LOCATION_TEXTURE_SRGB:
 219                 srgb = location == WINED3D_LOCATION_TEXTURE_SRGB;
 220                 surface_prepare_texture(surface, context, srgb);
 221                 gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_COLOR_ATTACHMENT0 + idx,
 222                         surface->texture_target, surface_get_texture_name(surface, gl_info, srgb),
 223                         surface->texture_level);
 224                 checkGLcall("glFramebufferTexture2D()");
 225                 break;
 226
 227             case WINED3D_LOCATION_RB_MULTISAMPLE:
 228                 surface_prepare_rb(surface, gl_info, TRUE);
 229                 gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_COLOR_ATTACHMENT0 + idx,
 230                         GL_RENDERBUFFER, surface->rb_multisample);
 231                 checkGLcall("glFramebufferRenderbuffer()");
 232                 break;
 233
 234             case WINED3D_LOCATION_RB_RESOLVED:
 235                 surface_prepare_rb(surface, gl_info, FALSE);
 236                 gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_COLOR_ATTACHMENT0 + idx,
 237                         GL_RENDERBUFFER, surface->rb_resolved);
 238                 checkGLcall("glFramebufferRenderbuffer()");
 239                 break;
 240
 241             default:
 242                 ERR("Unsupported location %s (%#x).\n", wined3d_debug_location(location), location);
 243                 break;
 244         }
 245     }
 246     else
 247     {
 248         gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, GL_COLOR_ATTACHMENT0 + idx, GL_TEXTURE_2D, 0, 0);
 249         checkGLcall("glFramebufferTexture2D()");
 250     }
 251 }
 252
 253 /* Context activation is done by the caller. */
 254 void context_check_fbo_status(const struct wined3d_context *context, GLenum target)
 255 {
 256     const struct wined3d_gl_info *gl_info = context->gl_info;
 257     GLenum status;
 258
 259     if (!FIXME_ON(d3d)) return;
 260
 261     status = gl_info->fbo_ops.glCheckFramebufferStatus(target);
 262     if (status == GL_FRAMEBUFFER_COMPLETE)
 263     {
 264         TRACE("FBO complete\n");
 265     }
 266     else
 267     {
 268         const struct wined3d_surface *attachment;
 269         unsigned int i;
 270
 271         FIXME("FBO status %s (%#x)\n", debug_fbostatus(status), status);
 272
 273         if (!context->current_fbo)
 274         {
 275             ERR("FBO 0 is incomplete, driver bug?\n");
 276             return;
 277         }
 278
 279         FIXME("\tLocation %s (%#x).\n", wined3d_debug_location(context->current_fbo->location),
 280                 context->current_fbo->location);
 281
 282         /* Dump the FBO attachments */
 283         for (i = 0; i < gl_info->limits.buffers; ++i)
 284         {
 285             attachment = context->current_fbo->render_targets[i];
 286             if (attachment)
 287             {
 288                 FIXME("\tColor attachment %d: (%p) %s %ux%u %u samples.\n",
 289                         i, attachment, debug_d3dformat(attachment->resource.format->id),
 290                         attachment->pow2Width, attachment->pow2Height, attachment->resource.multisample_type);
 291             }
 292         }
 293         attachment = context->current_fbo->depth_stencil;
 294         if (attachment)
 295         {
 296             FIXME("\tDepth attachment: (%p) %s %ux%u %u samples.\n",
 297                     attachment, debug_d3dformat(attachment->resource.format->id),
 298                     attachment->pow2Width, attachment->pow2Height, attachment->resource.multisample_type);
 299         }
 300     }
 301 }
 302
 303 static inline DWORD context_generate_rt_mask(GLenum buffer)
 304 {
 305     /* Should take care of all the GL_FRONT/GL_BACK/GL_AUXi/GL_NONE... cases */
 306     return buffer ? (1 << 31) | buffer : 0;
 307 }
 308
 309 static inline DWORD context_generate_rt_mask_from_surface(const struct wined3d_surface *target)
 310 {
 311     return (1 << 31) | surface_get_gl_buffer(target);
 312 }
 313
 314 static struct fbo_entry *context_create_fbo_entry(const struct wined3d_context *context,
 315         struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil, DWORD location)
 316 {
 317     const struct wined3d_gl_info *gl_info = context->gl_info;
 318     struct fbo_entry *entry;
 319
 320     entry = HeapAlloc(GetProcessHeap(), 0, sizeof(*entry));
 321     entry->render_targets = HeapAlloc(GetProcessHeap(), 0, gl_info->limits.buffers * sizeof(*entry->render_targets));
 322     memcpy(entry->render_targets, render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets));
 323     entry->depth_stencil = depth_stencil;
 324     entry->location = location;
 325     entry->rt_mask = context_generate_rt_mask(GL_COLOR_ATTACHMENT0);
 326     entry->attached = FALSE;
 327     gl_info->fbo_ops.glGenFramebuffers(1, &entry->id);
 328     checkGLcall("glGenFramebuffers()");
 329     TRACE("Created FBO %u.\n", entry->id);
 330
 331     return entry;
 332 }
 333
 334 /* Context activation is done by the caller. */
 335 static void context_reuse_fbo_entry(struct wined3d_context *context, GLenum target,
 336         struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil,
 337         DWORD location, struct fbo_entry *entry)
 338 {
 339     const struct wined3d_gl_info *gl_info = context->gl_info;
 340
 341     context_bind_fbo(context, target, entry->id);
 342     context_clean_fbo_attachments(gl_info, target);
 343
 344     memcpy(entry->render_targets, render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets));
 345     entry->depth_stencil = depth_stencil;
 346     entry->location = location;
 347     entry->attached = FALSE;
 348 }
 349
 350 /* Context activation is done by the caller. */
 351 static void context_destroy_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
 352 {
 353     if (entry->id)
 354     {
 355         TRACE("Destroy FBO %u.\n", entry->id);
 356         context_destroy_fbo(context, entry->id);
 357     }
 358     --context->fbo_entry_count;
 359     list_remove(&entry->entry);
 360     HeapFree(GetProcessHeap(), 0, entry->render_targets);
 361     HeapFree(GetProcessHeap(), 0, entry);
 362 }
 363
 364 /* Context activation is done by the caller. */
 365 static struct fbo_entry *context_find_fbo_entry(struct wined3d_context *context, GLenum target,
 366         struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil, DWORD location)
 367 {
 368     const struct wined3d_gl_info *gl_info = context->gl_info;
 369     struct fbo_entry *entry;
 370
 371     if (depth_stencil && render_targets && render_targets[0])
 372     {
 373         if (depth_stencil->resource.width < render_targets[0]->resource.width ||
 374             depth_stencil->resource.height < render_targets[0]->resource.height)
 375         {
 376             WARN("Depth stencil is smaller than the primary color buffer, disabling\n");
 377             depth_stencil = NULL;
 378         }
 379     }
 380
 381     LIST_FOR_EACH_ENTRY(entry, &context->fbo_list, struct fbo_entry, entry)
 382     {
 383         if (!memcmp(entry->render_targets,
 384                 render_targets, gl_info->limits.buffers * sizeof(*entry->render_targets))
 385                 && entry->depth_stencil == depth_stencil && entry->location == location)
 386         {
 387             list_remove(&entry->entry);
 388             list_add_head(&context->fbo_list, &entry->entry);
 389             return entry;
 390         }
 391     }
 392
 393     if (context->fbo_entry_count < WINED3D_MAX_FBO_ENTRIES)
 394     {
 395         entry = context_create_fbo_entry(context, render_targets, depth_stencil, location);
 396         list_add_head(&context->fbo_list, &entry->entry);
 397         ++context->fbo_entry_count;
 398     }
 399     else
 400     {
 401         entry = LIST_ENTRY(list_tail(&context->fbo_list), struct fbo_entry, entry);
 402         context_reuse_fbo_entry(context, target, render_targets, depth_stencil, location, entry);
 403         list_remove(&entry->entry);
 404         list_add_head(&context->fbo_list, &entry->entry);
 405     }
 406
 407     return entry;
 408 }
 409
 410 /* Context activation is done by the caller. */
 411 static void context_apply_fbo_entry(struct wined3d_context *context, GLenum target, struct fbo_entry *entry)
 412 {
 413     const struct wined3d_gl_info *gl_info = context->gl_info;
 414     unsigned int i;
 415     GLuint read_binding, draw_binding;
 416
 417     if (entry->attached)
 418     {
 419         context_bind_fbo(context, target, entry->id);
 420         return;
 421     }
 422
 423     read_binding = context->fbo_read_binding;
 424     draw_binding = context->fbo_draw_binding;
 425     context_bind_fbo(context, GL_FRAMEBUFFER, entry->id);
 426
 427     /* Apply render targets */
 428     for (i = 0; i < gl_info->limits.buffers; ++i)
 429     {
 430         context_attach_surface_fbo(context, target, i, entry->render_targets[i], entry->location);
 431     }
 432
 433     /* Apply depth targets */
 434     if (entry->depth_stencil)
 435         surface_set_compatible_renderbuffer(entry->depth_stencil, entry->render_targets[0]);
 436     context_attach_depth_stencil_fbo(context, target, entry->depth_stencil, entry->location);
 437
 438     /* Set valid read and draw buffer bindings to satisfy pedantic pre-ES2_compatibility
 439      * GL contexts requirements. */
 440     glReadBuffer(GL_NONE);
 441     context_set_draw_buffer(context, GL_NONE);
 442     if (target != GL_FRAMEBUFFER)
 443     {
 444         if (target == GL_READ_FRAMEBUFFER)
 445             context_bind_fbo(context, GL_DRAW_FRAMEBUFFER, draw_binding);
 446         else
 447             context_bind_fbo(context, GL_READ_FRAMEBUFFER, read_binding);
 448     }
 449
 450     entry->attached = TRUE;
 451 }
 452
 453 /* Context activation is done by the caller. */
 454 static void context_apply_fbo_state(struct wined3d_context *context, GLenum target,
 455         struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil, DWORD location)
 456 {
 457     struct fbo_entry *entry, *entry2;
 458
 459     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
 460     {
 461         context_destroy_fbo_entry(context, entry);
 462     }
 463
 464     if (context->rebind_fbo)
 465     {
 466         context_bind_fbo(context, GL_FRAMEBUFFER, 0);
 467         context->rebind_fbo = FALSE;
 468     }
 469
 470     if (location == WINED3D_LOCATION_DRAWABLE)
 471     {
 472         context->current_fbo = NULL;
 473         context_bind_fbo(context, target, 0);
 474     }
 475     else
 476     {
 477         context->current_fbo = context_find_fbo_entry(context, target, render_targets, depth_stencil, location);
 478         context_apply_fbo_entry(context, target, context->current_fbo);
 479     }
 480 }
 481
 482 /* Context activation is done by the caller. */
 483 void context_apply_fbo_state_blit(struct wined3d_context *context, GLenum target,
 484         struct wined3d_surface *render_target, struct wined3d_surface *depth_stencil, DWORD location)
 485 {
 486     UINT clear_size = (context->gl_info->limits.buffers - 1) * sizeof(*context->blit_targets);
 487
 488     context->blit_targets[0] = render_target;
 489     if (clear_size)
 490         memset(&context->blit_targets[1], 0, clear_size);
 491     context_apply_fbo_state(context, target, context->blit_targets, depth_stencil, location);
 492 }
 493
 494 /* Context activation is done by the caller. */
 495 void context_alloc_occlusion_query(struct wined3d_context *context, struct wined3d_occlusion_query *query)
 496 {
 497     const struct wined3d_gl_info *gl_info = context->gl_info;
 498
 499     if (context->free_occlusion_query_count)
 500     {
 501         query->id = context->free_occlusion_queries[--context->free_occlusion_query_count];
 502     }
 503     else
 504     {
 505         if (gl_info->supported[ARB_OCCLUSION_QUERY])
 506         {
 507             GL_EXTCALL(glGenQueriesARB(1, &query->id));
 508             checkGLcall("glGenQueriesARB");
 509
 510             TRACE("Allocated occlusion query %u in context %p.\n", query->id, context);
 511         }
 512         else
 513         {
 514             WARN("Occlusion queries not supported, not allocating query id.\n");
 515             query->id = 0;
 516         }
 517     }
 518
 519     query->context = context;
 520     list_add_head(&context->occlusion_queries, &query->entry);
 521 }
 522
 523 void context_free_occlusion_query(struct wined3d_occlusion_query *query)
 524 {
 525     struct wined3d_context *context = query->context;
 526
 527     list_remove(&query->entry);
 528     query->context = NULL;
 529
 530     if (context->free_occlusion_query_count >= context->free_occlusion_query_size - 1)
 531     {
 532         UINT new_size = context->free_occlusion_query_size << 1;
 533         GLuint *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_occlusion_queries,
 534                 new_size * sizeof(*context->free_occlusion_queries));
 535
 536         if (!new_data)
 537         {
 538             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->id, context);
 539             return;
 540         }
 541
 542         context->free_occlusion_query_size = new_size;
 543         context->free_occlusion_queries = new_data;
 544     }
 545
 546     context->free_occlusion_queries[context->free_occlusion_query_count++] = query->id;
 547 }
 548
 549 /* Context activation is done by the caller. */
 550 void context_alloc_event_query(struct wined3d_context *context, struct wined3d_event_query *query)
 551 {
 552     const struct wined3d_gl_info *gl_info = context->gl_info;
 553
 554     if (context->free_event_query_count)
 555     {
 556         query->object = context->free_event_queries[--context->free_event_query_count];
 557     }
 558     else
 559     {
 560         if (gl_info->supported[ARB_SYNC])
 561         {
 562             /* Using ARB_sync, not much to do here. */
 563             query->object.sync = NULL;
 564             TRACE("Allocated event query %p in context %p.\n", query->object.sync, context);
 565         }
 566         else if (gl_info->supported[APPLE_FENCE])
 567         {
 568             GL_EXTCALL(glGenFencesAPPLE(1, &query->object.id));
 569             checkGLcall("glGenFencesAPPLE");
 570
 571             TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
 572         }
 573         else if(gl_info->supported[NV_FENCE])
 574         {
 575             GL_EXTCALL(glGenFencesNV(1, &query->object.id));
 576             checkGLcall("glGenFencesNV");
 577
 578             TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
 579         }
 580         else
 581         {
 582             WARN("Event queries not supported, not allocating query id.\n");
 583             query->object.id = 0;
 584         }
 585     }
 586
 587     query->context = context;
 588     list_add_head(&context->event_queries, &query->entry);
 589 }
 590
 591 void context_free_event_query(struct wined3d_event_query *query)
 592 {
 593     struct wined3d_context *context = query->context;
 594
 595     list_remove(&query->entry);
 596     query->context = NULL;
 597
 598     if (context->free_event_query_count >= context->free_event_query_size - 1)
 599     {
 600         UINT new_size = context->free_event_query_size << 1;
 601         union wined3d_gl_query_object *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_event_queries,
 602                 new_size * sizeof(*context->free_event_queries));
 603
 604         if (!new_data)
 605         {
 606             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->object.id, context);
 607             return;
 608         }
 609
 610         context->free_event_query_size = new_size;
 611         context->free_event_queries = new_data;
 612     }
 613
 614     context->free_event_queries[context->free_event_query_count++] = query->object;
 615 }
 616
 617 typedef void (context_fbo_entry_func_t)(struct wined3d_context *context, struct fbo_entry *entry);
 618
 619 static void context_enum_surface_fbo_entries(const struct wined3d_device *device,
 620         const struct wined3d_surface *surface, context_fbo_entry_func_t *callback)
 621 {
 622     UINT i;
 623
 624     for (i = 0; i < device->context_count; ++i)
 625     {
 626         struct wined3d_context *context = device->contexts[i];
 627         const struct wined3d_gl_info *gl_info = context->gl_info;
 628         struct fbo_entry *entry, *entry2;
 629
 630         if (context->current_rt == surface) context->current_rt = NULL;
 631
 632         LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
 633         {
 634             UINT j;
 635
 636             if (entry->depth_stencil == surface)
 637             {
 638                 callback(context, entry);
 639                 continue;
 640             }
 641
 642             for (j = 0; j < gl_info->limits.buffers; ++j)
 643             {
 644                 if (entry->render_targets[j] == surface)
 645                 {
 646                     callback(context, entry);
 647                     break;
 648                 }
 649             }
 650         }
 651     }
 652 }
 653
 654 static void context_queue_fbo_entry_destruction(struct wined3d_context *context, struct fbo_entry *entry)
 655 {
 656     list_remove(&entry->entry);
 657     list_add_head(&context->fbo_destroy_list, &entry->entry);
 658 }
 659
 660 void context_resource_released(const struct wined3d_device *device,
 661         struct wined3d_resource *resource, enum wined3d_resource_type type)
 662 {
 663     if (!device->d3d_initialized) return;
 664
 665     switch (type)
 666     {
 667         case WINED3D_RTYPE_SURFACE:
 668             context_enum_surface_fbo_entries(device, surface_from_resource(resource),
 669                     context_queue_fbo_entry_destruction);
 670             break;
 671
 672         default:
 673             break;
 674     }
 675 }
 676
 677 static void context_detach_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
 678 {
 679     entry->attached = FALSE;
 680 }
 681
 682 void context_resource_unloaded(const struct wined3d_device *device,
 683         struct wined3d_resource *resource, enum wined3d_resource_type type)
 684 {
 685     switch (type)
 686     {
 687         case WINED3D_RTYPE_SURFACE:
 688             context_enum_surface_fbo_entries(device, surface_from_resource(resource),
 689                     context_detach_fbo_entry);
 690             break;
 691
 692         default:
 693             break;
 694     }
 695 }
 696
 697 void context_surface_update(struct wined3d_context *context, const struct wined3d_surface *surface)
 698 {
 699     const struct wined3d_gl_info *gl_info = context->gl_info;
 700     struct fbo_entry *entry = context->current_fbo;
 701     unsigned int i;
 702
 703     if (!entry || context->rebind_fbo) return;
 704
 705     for (i = 0; i < gl_info->limits.buffers; ++i)
 706     {
 707         if (surface == entry->render_targets[i])
 708         {
 709             TRACE("Updated surface %p is bound as color attachment %u to the current FBO.\n", surface, i);
 710             context->rebind_fbo = TRUE;
 711             return;
 712         }
 713     }
 714
 715     if (surface == entry->depth_stencil)
 716     {
 717         TRACE("Updated surface %p is bound as depth attachment to the current FBO.\n", surface);
 718         context->rebind_fbo = TRUE;
 719     }
 720 }
 721
 722 static BOOL context_set_pixel_format(const struct wined3d_gl_info *gl_info, HDC dc, int format)
 723 {
 724     int current = GetPixelFormat(dc);
 725
 726     if (current == format) return TRUE;
 727
 728     if (!current)
 729     {
 730         if (!SetPixelFormat(dc, format, NULL))
 731         {
 732             /* This may also happen if the dc belongs to a destroyed window. */
 733             WARN("Failed to set pixel format %d on device context %p, last error %#x.\n",
 734                     format, dc, GetLastError());
 735             return FALSE;
 736         }
 737         return TRUE;
 738     }
 739
 740     /* By default WGL doesn't allow pixel format adjustments but we need it
 741      * here. For this reason there's a Wine specific wglSetPixelFormat()
 742      * which allows us to set the pixel format multiple times. Only use it
 743      * when really needed. */
 744     if (gl_info->supported[WGL_WINE_PIXEL_FORMAT_PASSTHROUGH])
 745     {
 746         if (!GL_EXTCALL(wglSetPixelFormatWINE(dc, format)))
 747         {
 748             ERR("wglSetPixelFormatWINE failed to set pixel format %d on device context %p.\n",
 749                     format, dc);
 750             return FALSE;
 751         }
 752         return TRUE;
 753     }
 754
 755     /* OpenGL doesn't allow pixel format adjustments. Print an error and
 756      * continue using the old format. There's a big chance that the old
 757      * format works although with a performance hit and perhaps rendering
 758      * errors. */
 759     ERR("Unable to set pixel format %d on device context %p. Already using format %d.\n",
 760             format, dc, current);
 761     return TRUE;
 762 }
 763
 764 static BOOL context_set_gl_context(struct wined3d_context *ctx)
 765 {
 766     struct wined3d_swapchain *swapchain = ctx->swapchain;
 767     BOOL backup = FALSE;
 768
 769     if (!context_set_pixel_format(ctx->gl_info, ctx->hdc, ctx->pixel_format))
 770     {
 771         WARN("Failed to set pixel format %d on device context %p.\n",
 772                 ctx->pixel_format, ctx->hdc);
 773         backup = TRUE;
 774     }
 775
 776     if (backup || !wglMakeCurrent(ctx->hdc, ctx->glCtx))
 777     {
 778         HDC dc;
 779
 780         WARN("Failed to make GL context %p current on device context %p, last error %#x.\n",
 781                 ctx->glCtx, ctx->hdc, GetLastError());
 782         ctx->valid = 0;
 783         WARN("Trying fallback to the backup window.\n");
 784
 785         /* FIXME: If the context is destroyed it's no longer associated with
 786          * a swapchain, so we can't use the swapchain to get a backup dc. To
 787          * make this work windowless contexts would need to be handled by the
 788          * device. */
 789         if (ctx->destroyed)
 790         {
 791             FIXME("Unable to get backup dc for destroyed context %p.\n", ctx);
 792             context_set_current(NULL);
 793             return FALSE;
 794         }
 795
 796         if (!(dc = swapchain_get_backup_dc(swapchain)))
 797         {
 798             context_set_current(NULL);
 799             return FALSE;
 800         }
 801
 802         if (!context_set_pixel_format(ctx->gl_info, dc, ctx->pixel_format))
 803         {
 804             ERR("Failed to set pixel format %d on device context %p.\n",
 805                     ctx->pixel_format, dc);
 806             context_set_current(NULL);
 807             return FALSE;
 808         }
 809
 810         if (!wglMakeCurrent(dc, ctx->glCtx))
 811         {
 812             ERR("Fallback to backup window (dc %p) failed too, last error %#x.\n",
 813                     dc, GetLastError());
 814             context_set_current(NULL);
 815             return FALSE;
 816         }
 817
 818         ctx->valid = 1;
 819     }
 820     return TRUE;
 821 }
 822
 823 static void context_restore_gl_context(const struct wined3d_gl_info *gl_info, HDC dc, HGLRC gl_ctx, int pf)
 824 {
 825     if (!context_set_pixel_format(gl_info, dc, pf))
 826     {
 827         ERR("Failed to restore pixel format %d on device context %p.\n", pf, dc);
 828         context_set_current(NULL);
 829         return;
 830     }
 831
 832     if (!wglMakeCurrent(dc, gl_ctx))
 833     {
 834         ERR("Failed to restore GL context %p on device context %p, last error %#x.\n",
 835                 gl_ctx, dc, GetLastError());
 836         context_set_current(NULL);
 837     }
 838 }
 839
 840 static void context_update_window(struct wined3d_context *context)
 841 {
 842     if (context->win_handle == context->swapchain->win_handle)
 843         return;
 844
 845     TRACE("Updating context %p window from %p to %p.\n",
 846             context, context->win_handle, context->swapchain->win_handle);
 847
 848     if (context->valid)
 849         wined3d_release_dc(context->win_handle, context->hdc);
 850     else
 851         context->valid = 1;
 852
 853     context->win_handle = context->swapchain->win_handle;
 854
 855     if (!(context->hdc = GetDC(context->win_handle)))
 856     {
 857         ERR("Failed to get a device context for window %p.\n", context->win_handle);
 858         goto err;
 859     }
 860
 861     if (!context_set_pixel_format(context->gl_info, context->hdc, context->pixel_format))
 862     {
 863         ERR("Failed to set pixel format %d on device context %p.\n",
 864                 context->pixel_format, context->hdc);
 865         goto err;
 866     }
 867
 868     context_set_gl_context(context);
 869
 870     return;
 871
 872 err:
 873     context->valid = 0;
 874 }
 875
 876 static void context_destroy_gl_resources(struct wined3d_context *context)
 877 {
 878     const struct wined3d_gl_info *gl_info = context->gl_info;
 879     struct wined3d_occlusion_query *occlusion_query;
 880     struct wined3d_event_query *event_query;
 881     struct fbo_entry *entry, *entry2;
 882     HGLRC restore_ctx;
 883     HDC restore_dc;
 884     unsigned int i;
 885     int restore_pf;
 886
 887     restore_ctx = wglGetCurrentContext();
 888     restore_dc = wglGetCurrentDC();
 889     restore_pf = GetPixelFormat(restore_dc);
 890
 891     if (restore_ctx == context->glCtx)
 892         restore_ctx = NULL;
 893     else if (context->valid)
 894         context_set_gl_context(context);
 895
 896     LIST_FOR_EACH_ENTRY(occlusion_query, &context->occlusion_queries, struct wined3d_occlusion_query, entry)
 897     {
 898         if (context->valid && gl_info->supported[ARB_OCCLUSION_QUERY])
 899             GL_EXTCALL(glDeleteQueriesARB(1, &occlusion_query->id));
 900         occlusion_query->context = NULL;
 901     }
 902
 903     LIST_FOR_EACH_ENTRY(event_query, &context->event_queries, struct wined3d_event_query, entry)
 904     {
 905         if (context->valid)
 906         {
 907             if (gl_info->supported[ARB_SYNC])
 908             {
 909                 if (event_query->object.sync) GL_EXTCALL(glDeleteSync(event_query->object.sync));
 910             }
 911             else if (gl_info->supported[APPLE_FENCE]) GL_EXTCALL(glDeleteFencesAPPLE(1, &event_query->object.id));
 912             else if (gl_info->supported[NV_FENCE]) GL_EXTCALL(glDeleteFencesNV(1, &event_query->object.id));
 913         }
 914         event_query->context = NULL;
 915     }
 916
 917     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
 918     {
 919         if (!context->valid) entry->id = 0;
 920         context_destroy_fbo_entry(context, entry);
 921     }
 922
 923     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
 924     {
 925         if (!context->valid) entry->id = 0;
 926         context_destroy_fbo_entry(context, entry);
 927     }
 928
 929     if (context->valid)
 930     {
 931         if (context->dummy_arbfp_prog)
 932         {
 933             GL_EXTCALL(glDeleteProgramsARB(1, &context->dummy_arbfp_prog));
 934         }
 935
 936         if (gl_info->supported[ARB_OCCLUSION_QUERY])
 937             GL_EXTCALL(glDeleteQueriesARB(context->free_occlusion_query_count, context->free_occlusion_queries));
 938
 939         if (gl_info->supported[ARB_SYNC])
 940         {
 941             for (i = 0; i < context->free_event_query_count; ++i)
 942             {
 943                 GL_EXTCALL(glDeleteSync(context->free_event_queries[i].sync));
 944             }
 945         }
 946         else if (gl_info->supported[APPLE_FENCE])
 947         {
 948             for (i = 0; i < context->free_event_query_count; ++i)
 949             {
 950                 GL_EXTCALL(glDeleteFencesAPPLE(1, &context->free_event_queries[i].id));
 951             }
 952         }
 953         else if (gl_info->supported[NV_FENCE])
 954         {
 955             for (i = 0; i < context->free_event_query_count; ++i)
 956             {
 957                 GL_EXTCALL(glDeleteFencesNV(1, &context->free_event_queries[i].id));
 958             }
 959         }
 960
 961         checkGLcall("context cleanup");
 962     }
 963
 964     HeapFree(GetProcessHeap(), 0, context->free_occlusion_queries);
 965     HeapFree(GetProcessHeap(), 0, context->free_event_queries);
 966
 967     if (restore_ctx)
 968     {
 969         context_restore_gl_context(gl_info, restore_dc, restore_ctx, restore_pf);
 970     }
 971     else if (wglGetCurrentContext() && !wglMakeCurrent(NULL, NULL))
 972     {
 973         ERR("Failed to disable GL context.\n");
 974     }
 975
 976     wined3d_release_dc(context->win_handle, context->hdc);
 977
 978     if (!wglDeleteContext(context->glCtx))
 979     {
 980         DWORD err = GetLastError();
 981         ERR("wglDeleteContext(%p) failed, last error %#x.\n", context->glCtx, err);
 982     }
 983 }
 984
 985 DWORD context_get_tls_idx(void)
 986 {
 987     return wined3d_context_tls_idx;
 988 }
 989
 990 void context_set_tls_idx(DWORD idx)
 991 {
 992     wined3d_context_tls_idx = idx;
 993 }
 994
 995 struct wined3d_context *context_get_current(void)
 996 {
 997     return TlsGetValue(wined3d_context_tls_idx);
 998 }
 999
1000 BOOL context_set_current(struct wined3d_context *ctx)
1001 {
1002     struct wined3d_context *old = context_get_current();
1003
1004     if (old == ctx)
1005     {
1006         TRACE("Already using D3D context %p.\n", ctx);
1007         return TRUE;
1008     }
1009
1010     if (old)
1011     {
1012         if (old->destroyed)
1013         {
1014             TRACE("Switching away from destroyed context %p.\n", old);
1015             context_destroy_gl_resources(old);
1016             HeapFree(GetProcessHeap(), 0, (void *)old->gl_info);
1017             HeapFree(GetProcessHeap(), 0, old);
1018         }
1019         else
1020         {
1021             old->current = 0;
1022         }
1023     }
1024
1025     if (ctx)
1026     {
1027         if (!ctx->valid)
1028         {
1029             ERR("Trying to make invalid context %p current\n", ctx);
1030             return FALSE;
1031         }
1032
1033         TRACE("Switching to D3D context %p, GL context %p, device context %p.\n", ctx, ctx->glCtx, ctx->hdc);
1034         if (!context_set_gl_context(ctx))
1035             return FALSE;
1036         ctx->current = 1;
1037     }
1038     else if(wglGetCurrentContext())
1039     {
1040         TRACE("Clearing current D3D context.\n");
1041         if (!wglMakeCurrent(NULL, NULL))
1042         {
1043             DWORD err = GetLastError();
1044             ERR("Failed to clear current GL context, last error %#x.\n", err);
1045             TlsSetValue(wined3d_context_tls_idx, NULL);
1046             return FALSE;
1047         }
1048     }
1049
1050     return TlsSetValue(wined3d_context_tls_idx, ctx);
1051 }
1052
1053 void context_release(struct wined3d_context *context)
1054 {
1055     TRACE("Releasing context %p, level %u.\n", context, context->level);
1056
1057     if (WARN_ON(d3d))
1058     {
1059         if (!context->level)
1060             WARN("Context %p is not active.\n", context);
1061         else if (context != context_get_current())
1062             WARN("Context %p is not the current context.\n", context);
1063     }
1064
1065     if (!--context->level && context->restore_ctx)
1066     {
1067         TRACE("Restoring GL context %p on device context %p.\n", context->restore_ctx, context->restore_dc);
1068         context_restore_gl_context(context->gl_info, context->restore_dc, context->restore_ctx, context->restore_pf);
1069         context->restore_ctx = NULL;
1070         context->restore_dc = NULL;
1071     }
1072 }
1073
1074 static void context_enter(struct wined3d_context *context)
1075 {
1076     TRACE("Entering context %p, level %u.\n", context, context->level + 1);
1077
1078     if (!context->level++)
1079     {
1080         const struct wined3d_context *current_context = context_get_current();
1081         HGLRC current_gl = wglGetCurrentContext();
1082
1083         if (current_gl && (!current_context || current_context->glCtx != current_gl))
1084         {
1085             TRACE("Another GL context (%p on device context %p) is already current.\n",
1086                     current_gl, wglGetCurrentDC());
1087             context->restore_ctx = current_gl;
1088             context->restore_dc = wglGetCurrentDC();
1089             context->restore_pf = GetPixelFormat(context->restore_dc);
1090         }
1091     }
1092 }
1093
1094 void context_invalidate_state(struct wined3d_context *context, DWORD state)
1095 {
1096     DWORD rep = context->state_table[state].representative;
1097     DWORD idx;
1098     BYTE shift;
1099
1100     if (isStateDirty(context, rep)) return;
1101
1102     context->dirtyArray[context->numDirtyEntries++] = rep;
1103     idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
1104     shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
1105     context->isStateDirty[idx] |= (1 << shift);
1106 }
1107
1108 /* This function takes care of wined3d pixel format selection. */
1109 static int context_choose_pixel_format(const struct wined3d_device *device, HDC hdc,
1110         const struct wined3d_format *color_format, const struct wined3d_format *ds_format,
1111         BOOL auxBuffers, BOOL findCompatible)
1112 {
1113     int iPixelFormat=0;
1114     BYTE redBits, greenBits, blueBits, alphaBits, colorBits;
1115     BYTE depthBits=0, stencilBits=0;
1116     unsigned int current_value;
1117     unsigned int cfg_count = device->adapter->cfg_count;
1118     unsigned int i;
1119
1120     TRACE("device %p, dc %p, color_format %s, ds_format %s, aux_buffers %#x, find_compatible %#x.\n",
1121             device, hdc, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id),
1122             auxBuffers, findCompatible);
1123
1124     if (!getColorBits(color_format, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits))
1125     {
1126         ERR("Unable to get color bits for format %s (%#x)!\n",
1127                 debug_d3dformat(color_format->id), color_format->id);
1128         return 0;
1129     }
1130
1131     getDepthStencilBits(ds_format, &depthBits, &stencilBits);
1132
1133     current_value = 0;
1134     for (i = 0; i < cfg_count; ++i)
1135     {
1136         const struct wined3d_pixel_format *cfg = &device->adapter->cfgs[i];
1137         unsigned int value;
1138
1139         /* For now only accept RGBA formats. Perhaps some day we will
1140          * allow floating point formats for pbuffers. */
1141         if (cfg->iPixelType != WGL_TYPE_RGBA_ARB)
1142             continue;
1143         /* In window mode we need a window drawable format and double buffering. */
1144         if (!(cfg->windowDrawable && cfg->doubleBuffer))
1145             continue;
1146         if (cfg->redSize < redBits)
1147             continue;
1148         if (cfg->greenSize < greenBits)
1149             continue;
1150         if (cfg->blueSize < blueBits)
1151             continue;
1152         if (cfg->alphaSize < alphaBits)
1153             continue;
1154         if (cfg->depthSize < depthBits)
1155             continue;
1156         if (stencilBits && cfg->stencilSize != stencilBits)
1157             continue;
1158         /* Check multisampling support. */
1159         if (cfg->numSamples)
1160             continue;
1161
1162         value = 1;
1163         /* We try to locate a format which matches our requirements exactly. In case of
1164          * depth it is no problem to emulate 16-bit using e.g. 24-bit, so accept that. */
1165         if (cfg->depthSize == depthBits)
1166             value += 1;
1167         if (cfg->stencilSize == stencilBits)
1168             value += 2;
1169         if (cfg->alphaSize == alphaBits)
1170             value += 4;
1171         /* We like to have aux buffers in backbuffer mode */
1172         if (auxBuffers && cfg->auxBuffers)
1173             value += 8;
1174         if (cfg->redSize == redBits
1175                 && cfg->greenSize == greenBits
1176                 && cfg->blueSize == blueBits)
1177             value += 16;
1178
1179         if (value > current_value)
1180         {
1181             iPixelFormat = cfg->iPixelFormat;
1182             current_value = value;
1183         }
1184     }
1185
1186     /* When findCompatible is set and no suitable format was found, let ChoosePixelFormat choose a pixel format in order not to crash. */
1187     if(!iPixelFormat && !findCompatible) {
1188         ERR("Can't find a suitable iPixelFormat\n");
1189         return FALSE;
1190     } else if(!iPixelFormat) {
1191         PIXELFORMATDESCRIPTOR pfd;
1192
1193         TRACE("Falling back to ChoosePixelFormat as we weren't able to find an exactly matching pixel format\n");
1194         /* PixelFormat selection */
1195         ZeroMemory(&pfd, sizeof(pfd));
1196         pfd.nSize      = sizeof(pfd);
1197         pfd.nVersion   = 1;
1198         pfd.dwFlags    = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW;/*PFD_GENERIC_ACCELERATED*/
1199         pfd.iPixelType = PFD_TYPE_RGBA;
1200         pfd.cAlphaBits = alphaBits;
1201         pfd.cColorBits = colorBits;
1202         pfd.cDepthBits = depthBits;
1203         pfd.cStencilBits = stencilBits;
1204         pfd.iLayerType = PFD_MAIN_PLANE;
1205
1206         iPixelFormat = ChoosePixelFormat(hdc, &pfd);
1207         if(!iPixelFormat) {
1208             /* If this happens something is very wrong as ChoosePixelFormat barely fails */
1209             ERR("Can't find a suitable iPixelFormat\n");
1210             return FALSE;
1211         }
1212     }
1213
1214     TRACE("Found iPixelFormat=%d for ColorFormat=%s, DepthStencilFormat=%s\n",
1215             iPixelFormat, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id));
1216     return iPixelFormat;
1217 }
1218
1219 /* Context activation is done by the caller. */
1220 static void bind_dummy_textures(const struct wined3d_device *device, const struct wined3d_context *context)
1221 {
1222     const struct wined3d_gl_info *gl_info = context->gl_info;
1223     unsigned int i, count = min(MAX_COMBINED_SAMPLERS, gl_info->limits.combined_samplers);
1224
1225     for (i = 0; i < count; ++i)
1226     {
1227         GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + i));
1228         checkGLcall("glActiveTextureARB");
1229
1230         gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[i]);
1231         checkGLcall("glBindTexture");
1232
1233         if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1234         {
1235             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[i]);
1236             checkGLcall("glBindTexture");
1237         }
1238
1239         if (gl_info->supported[EXT_TEXTURE3D])
1240         {
1241             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[i]);
1242             checkGLcall("glBindTexture");
1243         }
1244
1245         if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1246         {
1247             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[i]);
1248             checkGLcall("glBindTexture");
1249         }
1250     }
1251 }
1252
1253 BOOL context_debug_output_enabled(const struct wined3d_gl_info *gl_info)
1254 {
1255     return gl_info->supported[ARB_DEBUG_OUTPUT]
1256             && (ERR_ON(d3d) || FIXME_ON(d3d) || WARN_ON(d3d_perf));
1257 }
1258
1259 static void WINE_GLAPI wined3d_debug_callback(GLenum source, GLenum type, GLuint id,
1260         GLenum severity, GLsizei length, const char *message, void *ctx)
1261 {
1262     switch (type)
1263     {
1264         case GL_DEBUG_TYPE_ERROR_ARB:
1265             ERR("%p: %s.\n", ctx, debugstr_an(message, length));
1266             break;
1267
1268         case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB:
1269         case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB:
1270         case GL_DEBUG_TYPE_PORTABILITY_ARB:
1271             FIXME("%p: %s.\n", ctx, debugstr_an(message, length));
1272             break;
1273
1274         case GL_DEBUG_TYPE_PERFORMANCE_ARB:
1275             WARN_(d3d_perf)("%p: %s.\n", ctx, debugstr_an(message, length));
1276             break;
1277
1278         default:
1279             FIXME("ctx %p, type %#x: %s.\n", ctx, type, debugstr_an(message, length));
1280             break;
1281     }
1282 }
1283
1284 struct wined3d_context *context_create(struct wined3d_swapchain *swapchain,
1285         struct wined3d_surface *target, const struct wined3d_format *ds_format)
1286 {
1287     struct wined3d_device *device = swapchain->device;
1288     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
1289     const struct wined3d_format *color_format;
1290     struct wined3d_context *ret;
1291     BOOL auxBuffers = FALSE;
1292     HGLRC ctx, share_ctx;
1293     int pixel_format;
1294     unsigned int s;
1295     int swap_interval;
1296     DWORD state;
1297     HDC hdc;
1298
1299     TRACE("swapchain %p, target %p, window %p.\n", swapchain, target, swapchain->win_handle);
1300
1301     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ret));
1302     if (!ret)
1303         return NULL;
1304
1305     ret->blit_targets = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1306             gl_info->limits.buffers * sizeof(*ret->blit_targets));
1307     if (!ret->blit_targets)
1308         goto out;
1309
1310     ret->draw_buffers = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1311             gl_info->limits.buffers * sizeof(*ret->draw_buffers));
1312     if (!ret->draw_buffers)
1313         goto out;
1314
1315     ret->free_occlusion_query_size = 4;
1316     ret->free_occlusion_queries = HeapAlloc(GetProcessHeap(), 0,
1317             ret->free_occlusion_query_size * sizeof(*ret->free_occlusion_queries));
1318     if (!ret->free_occlusion_queries)
1319         goto out;
1320
1321     list_init(&ret->occlusion_queries);
1322
1323     ret->free_event_query_size = 4;
1324     ret->free_event_queries = HeapAlloc(GetProcessHeap(), 0,
1325             ret->free_event_query_size * sizeof(*ret->free_event_queries));
1326     if (!ret->free_event_queries)
1327         goto out;
1328
1329     list_init(&ret->event_queries);
1330     list_init(&ret->fbo_list);
1331     list_init(&ret->fbo_destroy_list);
1332
1333     if (!device->shader_backend->shader_allocate_context_data(ret))
1334     {
1335         ERR("Failed to allocate shader backend context data.\n");
1336         goto out;
1337     }
1338
1339     /* Initialize the texture unit mapping to a 1:1 mapping */
1340     for (s = 0; s < MAX_COMBINED_SAMPLERS; ++s)
1341     {
1342         if (s < gl_info->limits.fragment_samplers)
1343         {
1344             ret->tex_unit_map[s] = s;
1345             ret->rev_tex_unit_map[s] = s;
1346         }
1347         else
1348         {
1349             ret->tex_unit_map[s] = WINED3D_UNMAPPED_STAGE;
1350             ret->rev_tex_unit_map[s] = WINED3D_UNMAPPED_STAGE;
1351         }
1352     }
1353
1354     if (!(hdc = GetDC(swapchain->win_handle)))
1355     {
1356         WARN("Failed to retireve device context, trying swapchain backup.\n");
1357
1358         if (!(hdc = swapchain_get_backup_dc(swapchain)))
1359         {
1360             ERR("Failed to retrieve a device context.\n");
1361             goto out;
1362         }
1363     }
1364
1365     color_format = target->resource.format;
1366
1367     /* In case of ORM_BACKBUFFER, make sure to request an alpha component for
1368      * X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
1369     if (wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER)
1370     {
1371         auxBuffers = TRUE;
1372
1373         if (color_format->id == WINED3DFMT_B4G4R4X4_UNORM)
1374             color_format = wined3d_get_format(gl_info, WINED3DFMT_B4G4R4A4_UNORM);
1375         else if (color_format->id == WINED3DFMT_B8G8R8X8_UNORM)
1376             color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1377     }
1378
1379     /* DirectDraw supports 8bit paletted render targets and these are used by
1380      * old games like StarCraft and C&C. Most modern hardware doesn't support
1381      * 8bit natively so we perform some form of 8bit -> 32bit conversion. The
1382      * conversion (ab)uses the alpha component for storing the palette index.
1383      * For this reason we require a format with 8bit alpha, so request
1384      * A8R8G8B8. */
1385     if (color_format->id == WINED3DFMT_P8_UINT)
1386         color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1387
1388     /* Try to find a pixel format which matches our requirements. */
1389     pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, FALSE);
1390
1391     /* Try to locate a compatible format if we weren't able to find anything. */
1392     if (!pixel_format)
1393     {
1394         TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1395         pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, TRUE);
1396     }
1397
1398     /* If we still don't have a pixel format, something is very wrong as ChoosePixelFormat barely fails */
1399     if (!pixel_format)
1400     {
1401         ERR("Can't find a suitable pixel format.\n");
1402         goto out;
1403     }
1404
1405     context_enter(ret);
1406
1407     if (!context_set_pixel_format(gl_info, hdc, pixel_format))
1408     {
1409         ERR("Failed to set pixel format %d on device context %p.\n", pixel_format, hdc);
1410         context_release(ret);
1411         goto out;
1412     }
1413
1414     share_ctx = device->context_count ? device->contexts[0]->glCtx : NULL;
1415     if (gl_info->p_wglCreateContextAttribsARB)
1416     {
1417         unsigned int ctx_attrib_idx = 0;
1418         GLint ctx_attribs[3];
1419
1420         if (context_debug_output_enabled(gl_info))
1421         {
1422             ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_FLAGS_ARB;
1423             ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_DEBUG_BIT_ARB;
1424         }
1425         ctx_attribs[ctx_attrib_idx] = 0;
1426
1427         if (!(ctx = gl_info->p_wglCreateContextAttribsARB(hdc, share_ctx, ctx_attribs)))
1428         {
1429             ERR("Failed to create a WGL context.\n");
1430             context_release(ret);
1431             goto out;
1432         }
1433     }
1434     else
1435     {
1436         if (!(ctx = wglCreateContext(hdc)))
1437         {
1438             ERR("Failed to create a WGL context.\n");
1439             context_release(ret);
1440             goto out;
1441         }
1442
1443         if (share_ctx && !wglShareLists(share_ctx, ctx))
1444         {
1445             ERR("wglShareLists(%p, %p) failed, last error %#x.\n", share_ctx, ctx, GetLastError());
1446             context_release(ret);
1447             if (!wglDeleteContext(ctx))
1448                 ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1449             goto out;
1450         }
1451     }
1452
1453     if (!device_context_add(device, ret))
1454     {
1455         ERR("Failed to add the newly created context to the context list\n");
1456         context_release(ret);
1457         if (!wglDeleteContext(ctx))
1458             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1459         goto out;
1460     }
1461
1462     ret->gl_info = gl_info;
1463     ret->d3d_info = &device->adapter->d3d_info;
1464     ret->state_table = device->StateTable;
1465
1466     /* Mark all states dirty to force a proper initialization of the states
1467      * on the first use of the context. */
1468     for (state = 0; state <= STATE_HIGHEST; ++state)
1469     {
1470         if (ret->state_table[state].representative)
1471             context_invalidate_state(ret, state);
1472     }
1473
1474     ret->swapchain = swapchain;
1475     ret->current_rt = target;
1476     ret->tid = GetCurrentThreadId();
1477
1478     ret->render_offscreen = surface_is_offscreen(target);
1479     ret->draw_buffers_mask = context_generate_rt_mask(GL_BACK);
1480     ret->valid = 1;
1481
1482     ret->glCtx = ctx;
1483     ret->win_handle = swapchain->win_handle;
1484     ret->hdc = hdc;
1485     ret->pixel_format = pixel_format;
1486
1487     /* Set up the context defaults */
1488     if (!context_set_current(ret))
1489     {
1490         ERR("Cannot activate context to set up defaults.\n");
1491         device_context_remove(device, ret);
1492         context_release(ret);
1493         if (!wglDeleteContext(ctx))
1494             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1495         goto out;
1496     }
1497
1498     if (context_debug_output_enabled(gl_info))
1499     {
1500         GL_EXTCALL(glDebugMessageCallbackARB(wined3d_debug_callback, ret));
1501         if (TRACE_ON(d3d_synchronous))
1502             gl_info->gl_ops.gl.p_glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
1503         GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_FALSE));
1504         if (ERR_ON(d3d))
1505         {
1506             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_ERROR_ARB,
1507                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1508         }
1509         if (FIXME_ON(d3d))
1510         {
1511             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB,
1512                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1513             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB,
1514                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1515             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_PORTABILITY_ARB,
1516                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1517         }
1518         if (WARN_ON(d3d_perf))
1519         {
1520             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_PERFORMANCE_ARB,
1521                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1522         }
1523     }
1524
1525     switch (swapchain->desc.swap_interval)
1526     {
1527         case WINED3DPRESENT_INTERVAL_IMMEDIATE:
1528             swap_interval = 0;
1529             break;
1530         case WINED3DPRESENT_INTERVAL_DEFAULT:
1531         case WINED3DPRESENT_INTERVAL_ONE:
1532             swap_interval = 1;
1533             break;
1534         case WINED3DPRESENT_INTERVAL_TWO:
1535             swap_interval = 2;
1536             break;
1537         case WINED3DPRESENT_INTERVAL_THREE:
1538             swap_interval = 3;
1539             break;
1540         case WINED3DPRESENT_INTERVAL_FOUR:
1541             swap_interval = 4;
1542             break;
1543         default:
1544             FIXME("Unknown swap interval %#x.\n", swapchain->desc.swap_interval);
1545             swap_interval = 1;
1546     }
1547
1548     if (gl_info->supported[WGL_EXT_SWAP_CONTROL])
1549     {
1550         if (!GL_EXTCALL(wglSwapIntervalEXT(swap_interval)))
1551             ERR("wglSwapIntervalEXT failed to set swap interval %d for context %p, last error %#x\n",
1552                 swap_interval, ret, GetLastError());
1553     }
1554
1555     gl_info->gl_ops.gl.p_glGetIntegerv(GL_AUX_BUFFERS, &ret->aux_buffers);
1556
1557     TRACE("Setting up the screen\n");
1558
1559     gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
1560     checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
1561
1562     gl_info->gl_ops.gl.p_glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
1563     checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
1564
1565     gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1566     checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
1567
1568     gl_info->gl_ops.gl.p_glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);
1569     checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);");
1570     gl_info->gl_ops.gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);
1571     checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);");
1572
1573     if (gl_info->supported[ARB_VERTEX_BLEND])
1574     {
1575         /* Direct3D always uses n-1 weights for n world matrices and uses
1576          * 1 - sum for the last one this is equal to GL_WEIGHT_SUM_UNITY_ARB.
1577          * Enabling it doesn't do anything unless GL_VERTEX_BLEND_ARB isn't
1578          * enabled as well. */
1579         gl_info->gl_ops.gl.p_glEnable(GL_WEIGHT_SUM_UNITY_ARB);
1580         checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
1581     }
1582     if (gl_info->supported[NV_TEXTURE_SHADER2])
1583     {
1584         /* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
1585          * the previous texture where to source the offset from is always unit - 1.
1586          */
1587         for (s = 1; s < gl_info->limits.textures; ++s)
1588         {
1589             context_active_texture(ret, gl_info, s);
1590             gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_SHADER_NV,
1591                     GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
1592             checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...");
1593         }
1594     }
1595     if (gl_info->supported[ARB_FRAGMENT_PROGRAM])
1596     {
1597         /* MacOS(radeon X1600 at least, but most likely others too) refuses to draw if GLSL and ARBFP are
1598          * enabled, but the currently bound arbfp program is 0. Enabling ARBFP with prog 0 is invalid, but
1599          * GLSL should bypass this. This causes problems in programs that never use the fixed function pipeline,
1600          * because the ARBFP extension is enabled by the ARBFP pipeline at context creation, but no program
1601          * is ever assigned.
1602          *
1603          * So make sure a program is assigned to each context. The first real ARBFP use will set a different
1604          * program and the dummy program is destroyed when the context is destroyed.
1605          */
1606         const char *dummy_program =
1607                 "!!ARBfp1.0\n"
1608                 "MOV result.color, fragment.color.primary;\n"
1609                 "END\n";
1610         GL_EXTCALL(glGenProgramsARB(1, &ret->dummy_arbfp_prog));
1611         GL_EXTCALL(glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, ret->dummy_arbfp_prog));
1612         GL_EXTCALL(glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(dummy_program), dummy_program));
1613     }
1614
1615     if (gl_info->supported[ARB_POINT_SPRITE])
1616     {
1617         for (s = 0; s < gl_info->limits.textures; ++s)
1618         {
1619             context_active_texture(ret, gl_info, s);
1620             gl_info->gl_ops.gl.p_glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
1621             checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)");
1622         }
1623     }
1624
1625     if (gl_info->supported[ARB_PROVOKING_VERTEX])
1626     {
1627         GL_EXTCALL(glProvokingVertex(GL_FIRST_VERTEX_CONVENTION));
1628     }
1629     else if (gl_info->supported[EXT_PROVOKING_VERTEX])
1630     {
1631         GL_EXTCALL(glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT));
1632     }
1633     ret->shader_update_mask = (1 << WINED3D_SHADER_TYPE_PIXEL)
1634             | (1 << WINED3D_SHADER_TYPE_VERTEX)
1635             | (1 << WINED3D_SHADER_TYPE_GEOMETRY);
1636
1637     /* If this happens to be the first context for the device, dummy textures
1638      * are not created yet. In that case, they will be created (and bound) by
1639      * create_dummy_textures right after this context is initialized. */
1640     if (device->dummy_texture_2d[0])
1641         bind_dummy_textures(device, ret);
1642
1643     TRACE("Created context %p.\n", ret);
1644
1645     return ret;
1646
1647 out:
1648     device->shader_backend->shader_free_context_data(ret);
1649     HeapFree(GetProcessHeap(), 0, ret->free_event_queries);
1650     HeapFree(GetProcessHeap(), 0, ret->free_occlusion_queries);
1651     HeapFree(GetProcessHeap(), 0, ret->draw_buffers);
1652     HeapFree(GetProcessHeap(), 0, ret->blit_targets);
1653     HeapFree(GetProcessHeap(), 0, ret);
1654     return NULL;
1655 }
1656
1657 void context_destroy(struct wined3d_device *device, struct wined3d_context *context)
1658 {
1659     BOOL destroy;
1660
1661     TRACE("Destroying ctx %p\n", context);
1662
1663     if (context->tid == GetCurrentThreadId() || !context->current)
1664     {
1665         context_destroy_gl_resources(context);
1666         TlsSetValue(wined3d_context_tls_idx, NULL);
1667         destroy = TRUE;
1668     }
1669     else
1670     {
1671         /* Make a copy of gl_info for context_destroy_gl_resources use, the one
1672            in wined3d_adapter may go away in the meantime */
1673         struct wined3d_gl_info *gl_info = HeapAlloc(GetProcessHeap(), 0, sizeof(*gl_info));
1674         *gl_info = *context->gl_info;
1675         context->gl_info = gl_info;
1676         context->destroyed = 1;
1677         destroy = FALSE;
1678     }
1679
1680     device->shader_backend->shader_free_context_data(context);
1681     HeapFree(GetProcessHeap(), 0, context->draw_buffers);
1682     HeapFree(GetProcessHeap(), 0, context->blit_targets);
1683     device_context_remove(device, context);
1684     if (destroy) HeapFree(GetProcessHeap(), 0, context);
1685 }
1686
1687 /* Context activation is done by the caller. */
1688 static void set_blit_dimension(const struct wined3d_gl_info *gl_info, UINT width, UINT height)
1689 {
1690     const GLdouble projection[] =
1691     {
1692         2.0 / width,          0.0,  0.0, 0.0,
1693                 0.0, 2.0 / height,  0.0, 0.0,
1694                 0.0,          0.0,  2.0, 0.0,
1695                -1.0,         -1.0, -1.0, 1.0,
1696     };
1697
1698     gl_info->gl_ops.gl.p_glMatrixMode(GL_PROJECTION);
1699     checkGLcall("glMatrixMode(GL_PROJECTION)");
1700     gl_info->gl_ops.gl.p_glLoadMatrixd(projection);
1701     checkGLcall("glLoadMatrixd");
1702     gl_info->gl_ops.gl.p_glViewport(0, 0, width, height);
1703     checkGLcall("glViewport");
1704 }
1705
1706 static void context_get_rt_size(const struct wined3d_context *context, SIZE *size)
1707 {
1708     const struct wined3d_surface *rt = context->current_rt;
1709
1710     if (rt->swapchain && rt->swapchain->front_buffer == rt)
1711     {
1712         RECT window_size;
1713
1714         GetClientRect(context->win_handle, &window_size);
1715         size->cx = window_size.right - window_size.left;
1716         size->cy = window_size.bottom - window_size.top;
1717
1718         return;
1719     }
1720
1721     size->cx = rt->resource.width;
1722     size->cy = rt->resource.height;
1723 }
1724
1725 /*****************************************************************************
1726  * SetupForBlit
1727  *
1728  * Sets up a context for DirectDraw blitting.
1729  * All texture units are disabled, texture unit 0 is set as current unit
1730  * fog, lighting, blending, alpha test, z test, scissor test, culling disabled
1731  * color writing enabled for all channels
1732  * register combiners disabled, shaders disabled
1733  * world matrix is set to identity, texture matrix 0 too
1734  * projection matrix is setup for drawing screen coordinates
1735  *
1736  * Params:
1737  *  This: Device to activate the context for
1738  *  context: Context to setup
1739  *
1740  *****************************************************************************/
1741 /* Context activation is done by the caller. */
1742 static void SetupForBlit(const struct wined3d_device *device, struct wined3d_context *context)
1743 {
1744     int i;
1745     const struct wined3d_gl_info *gl_info = context->gl_info;
1746     DWORD sampler;
1747     SIZE rt_size;
1748
1749     TRACE("Setting up context %p for blitting\n", context);
1750
1751     context_get_rt_size(context, &rt_size);
1752
1753     if (context->last_was_blit)
1754     {
1755         if (context->blit_w != rt_size.cx || context->blit_h != rt_size.cy)
1756         {
1757             set_blit_dimension(gl_info, rt_size.cx, rt_size.cy);
1758             context->blit_w = rt_size.cx;
1759             context->blit_h = rt_size.cy;
1760             /* No need to dirtify here, the states are still dirtified because
1761              * they weren't applied since the last SetupForBlit() call. */
1762         }
1763         TRACE("Context is already set up for blitting, nothing to do\n");
1764         return;
1765     }
1766     context->last_was_blit = TRUE;
1767
1768     /* Disable all textures. The caller can then bind a texture it wants to blit
1769      * from
1770      *
1771      * The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
1772      * function texture unit. No need to care for higher samplers
1773      */
1774     for (i = gl_info->limits.textures - 1; i > 0 ; --i)
1775     {
1776         sampler = context->rev_tex_unit_map[i];
1777         context_active_texture(context, gl_info, i);
1778
1779         if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1780         {
1781             gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1782             checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1783         }
1784         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
1785         checkGLcall("glDisable GL_TEXTURE_3D");
1786         if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1787         {
1788             gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
1789             checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1790         }
1791         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
1792         checkGLcall("glDisable GL_TEXTURE_2D");
1793
1794         gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1795         checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
1796
1797         if (sampler != WINED3D_UNMAPPED_STAGE)
1798         {
1799             if (sampler < MAX_TEXTURES)
1800                 context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_COLOR_OP));
1801             context_invalidate_state(context, STATE_SAMPLER(sampler));
1802         }
1803     }
1804     context_active_texture(context, gl_info, 0);
1805
1806     sampler = context->rev_tex_unit_map[0];
1807
1808     if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1809     {
1810         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1811         checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1812     }
1813     gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
1814     checkGLcall("glDisable GL_TEXTURE_3D");
1815     if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1816     {
1817         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
1818         checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1819     }
1820     gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
1821     checkGLcall("glDisable GL_TEXTURE_2D");
1822
1823     gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1824
1825     gl_info->gl_ops.gl.p_glMatrixMode(GL_TEXTURE);
1826     checkGLcall("glMatrixMode(GL_TEXTURE)");
1827     gl_info->gl_ops.gl.p_glLoadIdentity();
1828     checkGLcall("glLoadIdentity()");
1829
1830     if (gl_info->supported[EXT_TEXTURE_LOD_BIAS])
1831     {
1832         gl_info->gl_ops.gl.p_glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
1833                 GL_TEXTURE_LOD_BIAS_EXT, 0.0f);
1834         checkGLcall("glTexEnvf GL_TEXTURE_LOD_BIAS_EXT ...");
1835     }
1836
1837     if (sampler != WINED3D_UNMAPPED_STAGE)
1838     {
1839         if (sampler < MAX_TEXTURES)
1840         {
1841             context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_TEXTURE0 + sampler));
1842             context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_COLOR_OP));
1843         }
1844         context_invalidate_state(context, STATE_SAMPLER(sampler));
1845     }
1846
1847     /* Other misc states */
1848     gl_info->gl_ops.gl.p_glDisable(GL_ALPHA_TEST);
1849     checkGLcall("glDisable(GL_ALPHA_TEST)");
1850     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHATESTENABLE));
1851     gl_info->gl_ops.gl.p_glDisable(GL_LIGHTING);
1852     checkGLcall("glDisable GL_LIGHTING");
1853     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_LIGHTING));
1854     gl_info->gl_ops.gl.p_glDisable(GL_DEPTH_TEST);
1855     checkGLcall("glDisable GL_DEPTH_TEST");
1856     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ZENABLE));
1857     glDisableWINE(GL_FOG);
1858     checkGLcall("glDisable GL_FOG");
1859     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_FOGENABLE));
1860     gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
1861     checkGLcall("glDisable GL_BLEND");
1862     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
1863     gl_info->gl_ops.gl.p_glDisable(GL_CULL_FACE);
1864     checkGLcall("glDisable GL_CULL_FACE");
1865     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_CULLMODE));
1866     gl_info->gl_ops.gl.p_glDisable(GL_STENCIL_TEST);
1867     checkGLcall("glDisable GL_STENCIL_TEST");
1868     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_STENCILENABLE));
1869     gl_info->gl_ops.gl.p_glDisable(GL_SCISSOR_TEST);
1870     checkGLcall("glDisable GL_SCISSOR_TEST");
1871     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
1872     if (gl_info->supported[ARB_POINT_SPRITE])
1873     {
1874         gl_info->gl_ops.gl.p_glDisable(GL_POINT_SPRITE_ARB);
1875         checkGLcall("glDisable GL_POINT_SPRITE_ARB");
1876         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_POINTSPRITEENABLE));
1877     }
1878     gl_info->gl_ops.gl.p_glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
1879     checkGLcall("glColorMask");
1880     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
1881     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
1882     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
1883     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
1884     if (gl_info->supported[EXT_SECONDARY_COLOR])
1885     {
1886         gl_info->gl_ops.gl.p_glDisable(GL_COLOR_SUM_EXT);
1887         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SPECULARENABLE));
1888         checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
1889     }
1890
1891     /* Setup transforms */
1892     gl_info->gl_ops.gl.p_glMatrixMode(GL_MODELVIEW);
1893     checkGLcall("glMatrixMode(GL_MODELVIEW)");
1894     gl_info->gl_ops.gl.p_glLoadIdentity();
1895     checkGLcall("glLoadIdentity()");
1896     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_WORLD_MATRIX(0)));
1897
1898     context->last_was_rhw = TRUE;
1899     context_invalidate_state(context, STATE_VDECL); /* because of last_was_rhw = TRUE */
1900
1901     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
1902     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
1903     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
1904     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
1905     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
1906     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
1907     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_CLIPPING));
1908
1909     set_blit_dimension(gl_info, rt_size.cx, rt_size.cy);
1910
1911     /* Disable shaders */
1912     device->shader_backend->shader_disable(device->shader_priv, context);
1913
1914     context->blit_w = rt_size.cx;
1915     context->blit_h = rt_size.cy;
1916     context_invalidate_state(context, STATE_VIEWPORT);
1917     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
1918 }
1919
1920 static inline BOOL is_rt_mask_onscreen(DWORD rt_mask)
1921 {
1922     return rt_mask & (1 << 31);
1923 }
1924
1925 static inline GLenum draw_buffer_from_rt_mask(DWORD rt_mask)
1926 {
1927     return rt_mask & ~(1 << 31);
1928 }
1929
1930 /* Context activation is done by the caller. */
1931 static void context_apply_draw_buffers(struct wined3d_context *context, DWORD rt_mask)
1932 {
1933     const struct wined3d_gl_info *gl_info = context->gl_info;
1934
1935     if (!rt_mask)
1936     {
1937         gl_info->gl_ops.gl.p_glDrawBuffer(GL_NONE);
1938         checkGLcall("glDrawBuffer()");
1939     }
1940     else if (is_rt_mask_onscreen(rt_mask))
1941     {
1942         gl_info->gl_ops.gl.p_glDrawBuffer(draw_buffer_from_rt_mask(rt_mask));
1943         checkGLcall("glDrawBuffer()");
1944     }
1945     else
1946     {
1947         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
1948         {
1949             unsigned int i = 0;
1950
1951             while (rt_mask)
1952             {
1953                 if (rt_mask & 1)
1954                     context->draw_buffers[i] = GL_COLOR_ATTACHMENT0 + i;
1955                 else
1956                     context->draw_buffers[i] = GL_NONE;
1957
1958                 rt_mask >>= 1;
1959                 ++i;
1960             }
1961
1962             if (gl_info->supported[ARB_DRAW_BUFFERS])
1963             {
1964                 GL_EXTCALL(glDrawBuffersARB(i, context->draw_buffers));
1965                 checkGLcall("glDrawBuffers()");
1966             }
1967             else
1968             {
1969                 gl_info->gl_ops.gl.p_glDrawBuffer(context->draw_buffers[0]);
1970                 checkGLcall("glDrawBuffer()");
1971             }
1972         }
1973         else
1974         {
1975             ERR("Unexpected draw buffers mask with backbuffer ORM.\n");
1976         }
1977     }
1978 }
1979
1980 /* Context activation is done by the caller. */
1981 void context_set_draw_buffer(struct wined3d_context *context, GLenum buffer)
1982 {
1983     const struct wined3d_gl_info *gl_info = context->gl_info;
1984     DWORD *current_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
1985     DWORD new_mask = context_generate_rt_mask(buffer);
1986
1987     if (new_mask == *current_mask)
1988         return;
1989
1990     gl_info->gl_ops.gl.p_glDrawBuffer(buffer);
1991     checkGLcall("glDrawBuffer()");
1992
1993     *current_mask = new_mask;
1994 }
1995
1996 /* Context activation is done by the caller. */
1997 void context_active_texture(struct wined3d_context *context, const struct wined3d_gl_info *gl_info, unsigned int unit)
1998 {
1999     GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0 + unit));
2000     checkGLcall("glActiveTextureARB");
2001     context->active_texture = unit;
2002 }
2003
2004 void context_bind_texture(struct wined3d_context *context, GLenum target, GLuint name)
2005 {
2006     const struct wined3d_gl_info *gl_info = context->gl_info;
2007     DWORD unit = context->active_texture;
2008     DWORD old_texture_type = context->texture_type[unit];
2009
2010     if (name)
2011     {
2012         gl_info->gl_ops.gl.p_glBindTexture(target, name);
2013         checkGLcall("glBindTexture");
2014     }
2015     else
2016     {
2017         target = GL_NONE;
2018     }
2019
2020     if (old_texture_type != target)
2021     {
2022         const struct wined3d_device *device = context->swapchain->device;
2023
2024         switch (old_texture_type)
2025         {
2026             case GL_NONE:
2027                 /* nothing to do */
2028                 break;
2029             case GL_TEXTURE_2D:
2030                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[unit]);
2031                 checkGLcall("glBindTexture");
2032                 break;
2033             case GL_TEXTURE_RECTANGLE_ARB:
2034                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[unit]);
2035                 checkGLcall("glBindTexture");
2036                 break;
2037             case GL_TEXTURE_CUBE_MAP:
2038                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[unit]);
2039                 checkGLcall("glBindTexture");
2040                 break;
2041             case GL_TEXTURE_3D:
2042                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[unit]);
2043                 checkGLcall("glBindTexture");
2044                 break;
2045             default:
2046                 ERR("Unexpected texture target %#x\n", old_texture_type);
2047         }
2048
2049         context->texture_type[unit] = target;
2050     }
2051 }
2052
2053 static void context_set_render_offscreen(struct wined3d_context *context, BOOL offscreen)
2054 {
2055     if (context->render_offscreen == offscreen) return;
2056
2057     context_invalidate_state(context, STATE_POINTSPRITECOORDORIGIN);
2058     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
2059     context_invalidate_state(context, STATE_VIEWPORT);
2060     context_invalidate_state(context, STATE_SCISSORRECT);
2061     context_invalidate_state(context, STATE_FRONTFACE);
2062     context->render_offscreen = offscreen;
2063 }
2064
2065 static BOOL match_depth_stencil_format(const struct wined3d_format *existing,
2066         const struct wined3d_format *required)
2067 {
2068     BYTE existing_depth, existing_stencil, required_depth, required_stencil;
2069
2070     if (existing == required) return TRUE;
2071     if ((existing->flags & WINED3DFMT_FLAG_FLOAT) != (required->flags & WINED3DFMT_FLAG_FLOAT)) return FALSE;
2072
2073     getDepthStencilBits(existing, &existing_depth, &existing_stencil);
2074     getDepthStencilBits(required, &required_depth, &required_stencil);
2075
2076     if(existing_depth < required_depth) return FALSE;
2077     /* If stencil bits are used the exact amount is required - otherwise wrapping
2078      * won't work correctly */
2079     if(required_stencil && required_stencil != existing_stencil) return FALSE;
2080     return TRUE;
2081 }
2082
2083 /* The caller provides a context */
2084 static void context_validate_onscreen_formats(struct wined3d_context *context,
2085         const struct wined3d_surface *depth_stencil)
2086 {
2087     /* Onscreen surfaces are always in a swapchain */
2088     struct wined3d_swapchain *swapchain = context->current_rt->swapchain;
2089
2090     if (context->render_offscreen || !depth_stencil) return;
2091     if (match_depth_stencil_format(swapchain->ds_format, depth_stencil->resource.format)) return;
2092
2093     /* TODO: If the requested format would satisfy the needs of the existing one(reverse match),
2094      * or no onscreen depth buffer was created, the OpenGL drawable could be changed to the new
2095      * format. */
2096     WARN("Depth stencil format is not supported by WGL, rendering the backbuffer in an FBO\n");
2097
2098     /* The currently active context is the necessary context to access the swapchain's onscreen buffers */
2099     surface_load_location(context->current_rt, WINED3D_LOCATION_TEXTURE_RGB);
2100     swapchain->render_to_fbo = TRUE;
2101     swapchain_update_draw_bindings(swapchain);
2102     context_set_render_offscreen(context, TRUE);
2103 }
2104
2105 static DWORD context_generate_rt_mask_no_fbo(const struct wined3d_device *device, const struct wined3d_surface *rt)
2106 {
2107     if (!rt || rt->resource.format->id == WINED3DFMT_NULL)
2108         return 0;
2109     else if (rt->swapchain)
2110         return context_generate_rt_mask_from_surface(rt);
2111     else
2112         return context_generate_rt_mask(device->offscreenBuffer);
2113 }
2114
2115 /* Context activation is done by the caller. */
2116 void context_apply_blit_state(struct wined3d_context *context, const struct wined3d_device *device)
2117 {
2118     struct wined3d_surface *rt = context->current_rt;
2119     DWORD rt_mask, *cur_mask;
2120
2121     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2122     {
2123         context_validate_onscreen_formats(context, NULL);
2124
2125         if (context->render_offscreen)
2126         {
2127             wined3d_texture_load(rt->container, context, FALSE);
2128
2129             context_apply_fbo_state_blit(context, GL_FRAMEBUFFER, rt, NULL, rt->draw_binding);
2130             if (rt->resource.format->id != WINED3DFMT_NULL)
2131                 rt_mask = 1;
2132             else
2133                 rt_mask = 0;
2134         }
2135         else
2136         {
2137             context->current_fbo = NULL;
2138             context_bind_fbo(context, GL_FRAMEBUFFER, 0);
2139             rt_mask = context_generate_rt_mask_from_surface(rt);
2140         }
2141     }
2142     else
2143     {
2144         rt_mask = context_generate_rt_mask_no_fbo(device, rt);
2145     }
2146
2147     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2148
2149     if (rt_mask != *cur_mask)
2150     {
2151         context_apply_draw_buffers(context, rt_mask);
2152         *cur_mask = rt_mask;
2153     }
2154
2155     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2156     {
2157         context_check_fbo_status(context, GL_FRAMEBUFFER);
2158     }
2159
2160     SetupForBlit(device, context);
2161     context_invalidate_state(context, STATE_FRAMEBUFFER);
2162 }
2163
2164 static BOOL context_validate_rt_config(UINT rt_count,
2165         struct wined3d_surface * const *rts, const struct wined3d_surface *ds)
2166 {
2167     unsigned int i;
2168
2169     if (ds) return TRUE;
2170
2171     for (i = 0; i < rt_count; ++i)
2172     {
2173         if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL)
2174             return TRUE;
2175     }
2176
2177     WARN("Invalid render target config, need at least one attachment.\n");
2178     return FALSE;
2179 }
2180
2181 /* Context activation is done by the caller. */
2182 BOOL context_apply_clear_state(struct wined3d_context *context, const struct wined3d_device *device,
2183         UINT rt_count, const struct wined3d_fb_state *fb)
2184 {
2185     const struct wined3d_gl_info *gl_info = context->gl_info;
2186     DWORD rt_mask = 0, *cur_mask;
2187     UINT i;
2188     struct wined3d_surface **rts = fb->render_targets;
2189
2190     if (isStateDirty(context, STATE_FRAMEBUFFER) || fb != &device->fb
2191             || rt_count != context->gl_info->limits.buffers)
2192     {
2193         if (!context_validate_rt_config(rt_count, rts, fb->depth_stencil))
2194             return FALSE;
2195
2196         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2197         {
2198             context_validate_onscreen_formats(context, fb->depth_stencil);
2199
2200             if (!rt_count || surface_is_offscreen(rts[0]))
2201             {
2202                 for (i = 0; i < rt_count; ++i)
2203                 {
2204                     context->blit_targets[i] = rts[i];
2205                     if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL)
2206                         rt_mask |= (1 << i);
2207                 }
2208                 while (i < context->gl_info->limits.buffers)
2209                 {
2210                     context->blit_targets[i] = NULL;
2211                     ++i;
2212                 }
2213                 context_apply_fbo_state(context, GL_FRAMEBUFFER, context->blit_targets, fb->depth_stencil,
2214                         rt_count ? rts[0]->draw_binding : WINED3D_LOCATION_TEXTURE_RGB);
2215             }
2216             else
2217             {
2218                 context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL, WINED3D_LOCATION_DRAWABLE);
2219                 rt_mask = context_generate_rt_mask_from_surface(rts[0]);
2220             }
2221
2222             /* If the framebuffer is not the device's fb the device's fb has to be reapplied
2223              * next draw. Otherwise we could mark the framebuffer state clean here, once the
2224              * state management allows this */
2225             context_invalidate_state(context, STATE_FRAMEBUFFER);
2226         }
2227         else
2228         {
2229             rt_mask = context_generate_rt_mask_no_fbo(device, rt_count ? rts[0] : NULL);
2230         }
2231     }
2232     else if (wined3d_settings.offscreen_rendering_mode == ORM_FBO
2233             && (!rt_count || surface_is_offscreen(rts[0])))
2234     {
2235         for (i = 0; i < rt_count; ++i)
2236         {
2237             if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL) rt_mask |= (1 << i);
2238         }
2239     }
2240     else
2241     {
2242         rt_mask = context_generate_rt_mask_no_fbo(device, rt_count ? rts[0] : NULL);
2243     }
2244
2245     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2246
2247     if (rt_mask != *cur_mask)
2248     {
2249         context_apply_draw_buffers(context, rt_mask);
2250         *cur_mask = rt_mask;
2251         context_invalidate_state(context, STATE_FRAMEBUFFER);
2252     }
2253
2254     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2255     {
2256         context_check_fbo_status(context, GL_FRAMEBUFFER);
2257     }
2258
2259     if (context->last_was_blit)
2260         context->last_was_blit = FALSE;
2261
2262     /* Blending and clearing should be orthogonal, but tests on the nvidia
2263      * driver show that disabling blending when clearing improves the clearing
2264      * performance incredibly. */
2265     gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
2266     gl_info->gl_ops.gl.p_glEnable(GL_SCISSOR_TEST);
2267     checkGLcall("glEnable GL_SCISSOR_TEST");
2268
2269     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2270     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
2271     context_invalidate_state(context, STATE_SCISSORRECT);
2272
2273     return TRUE;
2274 }
2275
2276 static DWORD find_draw_buffers_mask(const struct wined3d_context *context, const struct wined3d_device *device)
2277 {
2278     const struct wined3d_state *state = &device->state;
2279     struct wined3d_surface **rts = state->fb->render_targets;
2280     struct wined3d_shader *ps = state->shader[WINED3D_SHADER_TYPE_PIXEL];
2281     DWORD rt_mask, rt_mask_bits;
2282     unsigned int i;
2283
2284     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) return context_generate_rt_mask_no_fbo(device, rts[0]);
2285     else if (!context->render_offscreen) return context_generate_rt_mask_from_surface(rts[0]);
2286
2287     rt_mask = ps ? ps->reg_maps.rt_mask : 1;
2288     rt_mask &= context->d3d_info->valid_rt_mask;
2289     rt_mask_bits = rt_mask;
2290     i = 0;
2291     while (rt_mask_bits)
2292     {
2293         rt_mask_bits &= ~(1 << i);
2294         if (!rts[i] || rts[i]->resource.format->id == WINED3DFMT_NULL)
2295             rt_mask &= ~(1 << i);
2296
2297         i++;
2298     }
2299
2300     return rt_mask;
2301 }
2302
2303 /* Context activation is done by the caller. */
2304 void context_state_fb(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2305 {
2306     const struct wined3d_device *device = context->swapchain->device;
2307     const struct wined3d_fb_state *fb = state->fb;
2308     DWORD rt_mask = find_draw_buffers_mask(context, device);
2309     DWORD *cur_mask;
2310
2311     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2312     {
2313         if (!context->render_offscreen)
2314         {
2315             context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL, WINED3D_LOCATION_DRAWABLE);
2316         }
2317         else
2318         {
2319             context_apply_fbo_state(context, GL_FRAMEBUFFER, fb->render_targets, fb->depth_stencil,
2320                     fb->render_targets[0]->draw_binding);
2321         }
2322     }
2323
2324     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2325     if (rt_mask != *cur_mask)
2326     {
2327         context_apply_draw_buffers(context, rt_mask);
2328         *cur_mask = rt_mask;
2329     }
2330 }
2331
2332 static void context_map_stage(struct wined3d_context *context, DWORD stage, DWORD unit)
2333 {
2334     DWORD i = context->rev_tex_unit_map[unit];
2335     DWORD j = context->tex_unit_map[stage];
2336
2337     context->tex_unit_map[stage] = unit;
2338     if (i != WINED3D_UNMAPPED_STAGE && i != stage)
2339         context->tex_unit_map[i] = WINED3D_UNMAPPED_STAGE;
2340
2341     context->rev_tex_unit_map[unit] = stage;
2342     if (j != WINED3D_UNMAPPED_STAGE && j != unit)
2343         context->rev_tex_unit_map[j] = WINED3D_UNMAPPED_STAGE;
2344 }
2345
2346 static void context_invalidate_texture_stage(struct wined3d_context *context, DWORD stage)
2347 {
2348     DWORD i;
2349
2350     for (i = 0; i <= WINED3D_HIGHEST_TEXTURE_STATE; ++i)
2351         context_invalidate_state(context, STATE_TEXTURESTAGE(stage, i));
2352 }
2353
2354 static void context_update_fixed_function_usage_map(struct wined3d_context *context,
2355         const struct wined3d_state *state)
2356 {
2357     UINT i, start, end;
2358
2359     context->fixed_function_usage_map = 0;
2360     for (i = 0; i < MAX_TEXTURES; ++i)
2361     {
2362         enum wined3d_texture_op color_op = state->texture_states[i][WINED3D_TSS_COLOR_OP];
2363         enum wined3d_texture_op alpha_op = state->texture_states[i][WINED3D_TSS_ALPHA_OP];
2364         DWORD color_arg1 = state->texture_states[i][WINED3D_TSS_COLOR_ARG1] & WINED3DTA_SELECTMASK;
2365         DWORD color_arg2 = state->texture_states[i][WINED3D_TSS_COLOR_ARG2] & WINED3DTA_SELECTMASK;
2366         DWORD color_arg3 = state->texture_states[i][WINED3D_TSS_COLOR_ARG0] & WINED3DTA_SELECTMASK;
2367         DWORD alpha_arg1 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG1] & WINED3DTA_SELECTMASK;
2368         DWORD alpha_arg2 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG2] & WINED3DTA_SELECTMASK;
2369         DWORD alpha_arg3 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG0] & WINED3DTA_SELECTMASK;
2370
2371         /* Not used, and disable higher stages. */
2372         if (color_op == WINED3D_TOP_DISABLE)
2373             break;
2374
2375         if (((color_arg1 == WINED3DTA_TEXTURE) && color_op != WINED3D_TOP_SELECT_ARG2)
2376                 || ((color_arg2 == WINED3DTA_TEXTURE) && color_op != WINED3D_TOP_SELECT_ARG1)
2377                 || ((color_arg3 == WINED3DTA_TEXTURE)
2378                     && (color_op == WINED3D_TOP_MULTIPLY_ADD || color_op == WINED3D_TOP_LERP))
2379                 || ((alpha_arg1 == WINED3DTA_TEXTURE) && alpha_op != WINED3D_TOP_SELECT_ARG2)
2380                 || ((alpha_arg2 == WINED3DTA_TEXTURE) && alpha_op != WINED3D_TOP_SELECT_ARG1)
2381                 || ((alpha_arg3 == WINED3DTA_TEXTURE)
2382                     && (alpha_op == WINED3D_TOP_MULTIPLY_ADD || alpha_op == WINED3D_TOP_LERP)))
2383             context->fixed_function_usage_map |= (1 << i);
2384
2385         if ((color_op == WINED3D_TOP_BUMPENVMAP || color_op == WINED3D_TOP_BUMPENVMAP_LUMINANCE)
2386                 && i < MAX_TEXTURES - 1)
2387             context->fixed_function_usage_map |= (1 << (i + 1));
2388     }
2389
2390     if (i < context->lowest_disabled_stage)
2391     {
2392         start = i;
2393         end = context->lowest_disabled_stage;
2394     }
2395     else
2396     {
2397         start = context->lowest_disabled_stage;
2398         end = i;
2399     }
2400
2401     context->lowest_disabled_stage = i;
2402     for (i = start + 1; i < end; ++i)
2403     {
2404         context_invalidate_state(context, STATE_TEXTURESTAGE(i, WINED3D_TSS_COLOR_OP));
2405     }
2406 }
2407
2408 static void context_map_fixed_function_samplers(struct wined3d_context *context,
2409         const struct wined3d_state *state)
2410 {
2411     unsigned int i, tex;
2412     WORD ffu_map;
2413     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2414
2415     context_update_fixed_function_usage_map(context, state);
2416     ffu_map = context->fixed_function_usage_map;
2417
2418     if (d3d_info->limits.ffp_textures == d3d_info->limits.ffp_blend_stages
2419             || context->lowest_disabled_stage <= d3d_info->limits.ffp_textures)
2420     {
2421         for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2422         {
2423             if (!(ffu_map & 1))
2424                 continue;
2425
2426             if (context->tex_unit_map[i] != i)
2427             {
2428                 context_map_stage(context, i, i);
2429                 context_invalidate_state(context, STATE_SAMPLER(i));
2430                 context_invalidate_texture_stage(context, i);
2431             }
2432         }
2433         return;
2434     }
2435
2436     /* Now work out the mapping */
2437     tex = 0;
2438     for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2439     {
2440         if (!(ffu_map & 1))
2441             continue;
2442
2443         if (context->tex_unit_map[i] != tex)
2444         {
2445             context_map_stage(context, i, tex);
2446             context_invalidate_state(context, STATE_SAMPLER(i));
2447             context_invalidate_texture_stage(context, i);
2448         }
2449
2450         ++tex;
2451     }
2452 }
2453
2454 static void context_map_psamplers(struct wined3d_context *context, const struct wined3d_state *state)
2455 {
2456     const enum wined3d_sampler_texture_type *sampler_type =
2457             state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.sampler_type;
2458     unsigned int i;
2459     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2460
2461     for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i)
2462     {
2463         if (sampler_type[i] && context->tex_unit_map[i] != i)
2464         {
2465             context_map_stage(context, i, i);
2466             context_invalidate_state(context, STATE_SAMPLER(i));
2467             if (i < d3d_info->limits.ffp_blend_stages)
2468                 context_invalidate_texture_stage(context, i);
2469         }
2470     }
2471 }
2472
2473 static BOOL context_unit_free_for_vs(const struct wined3d_context *context,
2474         const enum wined3d_sampler_texture_type *pshader_sampler_tokens,
2475         const enum wined3d_sampler_texture_type *vshader_sampler_tokens, DWORD unit)
2476 {
2477     DWORD current_mapping = context->rev_tex_unit_map[unit];
2478
2479     /* Not currently used */
2480     if (current_mapping == WINED3D_UNMAPPED_STAGE)
2481         return TRUE;
2482
2483     if (current_mapping < MAX_FRAGMENT_SAMPLERS)
2484     {
2485         /* Used by a fragment sampler */
2486
2487         if (!pshader_sampler_tokens)
2488         {
2489             /* No pixel shader, check fixed function */
2490             return current_mapping >= MAX_TEXTURES || !(context->fixed_function_usage_map & (1 << current_mapping));
2491         }
2492
2493         /* Pixel shader, check the shader's sampler map */
2494         return !pshader_sampler_tokens[current_mapping];
2495     }
2496
2497     /* Used by a vertex sampler */
2498     return !vshader_sampler_tokens[current_mapping - MAX_FRAGMENT_SAMPLERS];
2499 }
2500
2501 static void context_map_vsamplers(struct wined3d_context *context, BOOL ps, const struct wined3d_state *state)
2502 {
2503     const enum wined3d_sampler_texture_type *vshader_sampler_type =
2504             state->shader[WINED3D_SHADER_TYPE_VERTEX]->reg_maps.sampler_type;
2505     const enum wined3d_sampler_texture_type *pshader_sampler_type = NULL;
2506     const struct wined3d_gl_info *gl_info = context->gl_info;
2507     int start = min(MAX_COMBINED_SAMPLERS, gl_info->limits.combined_samplers) - 1;
2508     int i;
2509
2510     if (ps)
2511     {
2512         /* Note that we only care if a sampler is sampled or not, not the sampler's specific type.
2513          * Otherwise we'd need to call shader_update_samplers() here for 1.x pixelshaders. */
2514         pshader_sampler_type = state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.sampler_type;
2515     }
2516
2517     for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i) {
2518         DWORD vsampler_idx = i + MAX_FRAGMENT_SAMPLERS;
2519         if (vshader_sampler_type[i])
2520         {
2521             if (context->tex_unit_map[vsampler_idx] != WINED3D_UNMAPPED_STAGE)
2522             {
2523                 /* Already mapped somewhere */
2524                 continue;
2525             }
2526
2527             while (start >= 0)
2528             {
2529                 if (context_unit_free_for_vs(context, pshader_sampler_type, vshader_sampler_type, start))
2530                 {
2531                     context_map_stage(context, vsampler_idx, start);
2532                     context_invalidate_state(context, STATE_SAMPLER(vsampler_idx));
2533
2534                     --start;
2535                     break;
2536                 }
2537
2538                 --start;
2539             }
2540         }
2541     }
2542 }
2543
2544 static void context_update_tex_unit_map(struct wined3d_context *context, const struct wined3d_state *state)
2545 {
2546     BOOL vs = use_vs(state);
2547     BOOL ps = use_ps(state);
2548     /*
2549      * Rules are:
2550      * -> Pixel shaders need a 1:1 map. In theory the shader input could be mapped too, but
2551      * that would be really messy and require shader recompilation
2552      * -> When the mapping of a stage is changed, sampler and ALL texture stage states have
2553      * to be reset. Because of that try to work with a 1:1 mapping as much as possible
2554      */
2555     if (ps)
2556         context_map_psamplers(context, state);
2557     else
2558         context_map_fixed_function_samplers(context, state);
2559
2560     if (vs)
2561         context_map_vsamplers(context, ps, state);
2562 }
2563
2564 /* Context activation is done by the caller. */
2565 void context_state_drawbuf(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2566 {
2567     const struct wined3d_device *device = context->swapchain->device;
2568     DWORD rt_mask, *cur_mask;
2569
2570     if (isStateDirty(context, STATE_FRAMEBUFFER)) return;
2571
2572     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2573     rt_mask = find_draw_buffers_mask(context, device);
2574     if (rt_mask != *cur_mask)
2575     {
2576         context_apply_draw_buffers(context, rt_mask);
2577         *cur_mask = rt_mask;
2578     }
2579 }
2580
2581 static BOOL fixed_get_input(BYTE usage, BYTE usage_idx, unsigned int *regnum)
2582 {
2583     if ((usage == WINED3D_DECL_USAGE_POSITION || usage == WINED3D_DECL_USAGE_POSITIONT) && !usage_idx)
2584         *regnum = WINED3D_FFP_POSITION;
2585     else if (usage == WINED3D_DECL_USAGE_BLEND_WEIGHT && !usage_idx)
2586         *regnum = WINED3D_FFP_BLENDWEIGHT;
2587     else if (usage == WINED3D_DECL_USAGE_BLEND_INDICES && !usage_idx)
2588         *regnum = WINED3D_FFP_BLENDINDICES;
2589     else if (usage == WINED3D_DECL_USAGE_NORMAL && !usage_idx)
2590         *regnum = WINED3D_FFP_NORMAL;
2591     else if (usage == WINED3D_DECL_USAGE_PSIZE && !usage_idx)
2592         *regnum = WINED3D_FFP_PSIZE;
2593     else if (usage == WINED3D_DECL_USAGE_COLOR && !usage_idx)
2594         *regnum = WINED3D_FFP_DIFFUSE;
2595     else if (usage == WINED3D_DECL_USAGE_COLOR && usage_idx == 1)
2596         *regnum = WINED3D_FFP_SPECULAR;
2597     else if (usage == WINED3D_DECL_USAGE_TEXCOORD && usage_idx < WINED3DDP_MAXTEXCOORD)
2598         *regnum = WINED3D_FFP_TEXCOORD0 + usage_idx;
2599     else
2600     {
2601         FIXME("Unsupported input stream [usage=%s, usage_idx=%u].\n", debug_d3ddeclusage(usage), usage_idx);
2602         *regnum = ~0U;
2603         return FALSE;
2604     }
2605
2606     return TRUE;
2607 }
2608
2609 /* FIXME: Separate buffer loading from declaration decoding */
2610 /* Context activation is done by the caller. */
2611 void context_stream_info_from_declaration(struct wined3d_context *context,
2612         const struct wined3d_state *state, struct wined3d_stream_info *stream_info)
2613 {
2614     /* We need to deal with frequency data! */
2615     struct wined3d_vertex_declaration *declaration = state->vertex_declaration;
2616     BOOL use_vshader = use_vs(state);
2617     unsigned int i;
2618     WORD map;
2619
2620     stream_info->use_map = 0;
2621     stream_info->swizzle_map = 0;
2622     stream_info->all_vbo = 1;
2623     stream_info->position_transformed = declaration->position_transformed;
2624
2625     /* Translate the declaration into strided data. */
2626     for (i = 0; i < declaration->element_count; ++i)
2627     {
2628         const struct wined3d_vertex_declaration_element *element = &declaration->elements[i];
2629         const struct wined3d_stream_state *stream = &state->streams[element->input_slot];
2630         struct wined3d_buffer *buffer = stream->buffer;
2631         struct wined3d_bo_address data;
2632         BOOL stride_used;
2633         unsigned int idx;
2634         DWORD stride;
2635
2636         TRACE("%p Element %p (%u of %u).\n", declaration->elements,
2637                 element, i + 1, declaration->element_count);
2638
2639         if (!buffer) continue;
2640
2641         stride = stream->stride;
2642         TRACE("Stream %u in buffer %p.\n", element->input_slot, buffer);
2643         buffer_get_memory(buffer, context, &data);
2644
2645         /* Can't use vbo's if the base vertex index is negative. OpenGL doesn't accept negative offsets
2646          * (or rather offsets bigger than the vbo, because the pointer is unsigned), so use system memory
2647          * sources. In most sane cases the pointer - offset will still be > 0, otherwise it will wrap
2648          * around to some big value. Hope that with the indices, the driver wraps it back internally. If
2649          * not, drawStridedSlow is needed, including a vertex buffer path. */
2650         if (state->load_base_vertex_index < 0)
2651         {
2652             WARN_(d3d_perf)("load_base_vertex_index is < 0 (%d), not using VBOs.\n",
2653                     state->load_base_vertex_index);
2654             data.buffer_object = 0;
2655             data.addr = buffer_get_sysmem(buffer, context);
2656             if ((UINT_PTR)data.addr < -state->load_base_vertex_index * stride)
2657             {
2658                 FIXME("System memory vertex data load offset is negative!\n");
2659             }
2660         }
2661         data.addr += element->offset;
2662
2663         TRACE("offset %u input_slot %u usage_idx %d.\n", element->offset, element->input_slot, element->usage_idx);
2664
2665         if (use_vshader)
2666         {
2667             if (element->output_slot == ~0U)
2668             {
2669                 /* TODO: Assuming vertexdeclarations are usually used with the
2670                  * same or a similar shader, it might be worth it to store the
2671                  * last used output slot and try that one first. */
2672                 stride_used = vshader_get_input(state->shader[WINED3D_SHADER_TYPE_VERTEX],
2673                         element->usage, element->usage_idx, &idx);
2674             }
2675             else
2676             {
2677                 idx = element->output_slot;
2678                 stride_used = TRUE;
2679             }
2680         }
2681         else
2682         {
2683             if (!element->ffp_valid)
2684             {
2685                 WARN("Skipping unsupported fixed function element of format %s and usage %s.\n",
2686                         debug_d3dformat(element->format->id), debug_d3ddeclusage(element->usage));
2687                 stride_used = FALSE;
2688             }
2689             else
2690             {
2691                 stride_used = fixed_get_input(element->usage, element->usage_idx, &idx);
2692             }
2693         }
2694
2695         if (stride_used)
2696         {
2697             TRACE("Load %s array %u [usage %s, usage_idx %u, "
2698                     "input_slot %u, offset %u, stride %u, format %s, buffer_object %u].\n",
2699                     use_vshader ? "shader": "fixed function", idx,
2700                     debug_d3ddeclusage(element->usage), element->usage_idx, element->input_slot,
2701                     element->offset, stride, debug_d3dformat(element->format->id), data.buffer_object);
2702
2703             data.addr += stream->offset;
2704
2705             stream_info->elements[idx].format = element->format;
2706             stream_info->elements[idx].data = data;
2707             stream_info->elements[idx].stride = stride;
2708             stream_info->elements[idx].stream_idx = element->input_slot;
2709
2710             if (!context->gl_info->supported[ARB_VERTEX_ARRAY_BGRA]
2711                     && element->format->id == WINED3DFMT_B8G8R8A8_UNORM)
2712             {
2713                 stream_info->swizzle_map |= 1 << idx;
2714             }
2715             stream_info->use_map |= 1 << idx;
2716         }
2717     }
2718
2719     /* Preload the vertex buffers. */
2720     context->num_buffer_queries = 0;
2721     for (i = 0, map = stream_info->use_map; map; map >>= 1, ++i)
2722     {
2723         struct wined3d_stream_info_element *element;
2724         struct wined3d_buffer *buffer;
2725
2726         if (!(map & 1))
2727             continue;
2728
2729         element = &stream_info->elements[i];
2730         buffer = state->streams[element->stream_idx].buffer;
2731         buffer_internal_preload(buffer, context, state);
2732
2733         /* If the preload dropped the buffer object, update the stream info. */
2734         if (buffer->buffer_object != element->data.buffer_object)
2735         {
2736             element->data.buffer_object = 0;
2737             element->data.addr = buffer_get_sysmem(buffer, context)
2738                     + (ptrdiff_t)element->data.addr;
2739         }
2740
2741         if (!buffer->buffer_object)
2742             stream_info->all_vbo = 0;
2743
2744         if (buffer->query)
2745             context->buffer_queries[context->num_buffer_queries++] = buffer->query;
2746     }
2747 }
2748
2749 /* Context activation is done by the caller. */
2750 static void context_update_stream_info(struct wined3d_context *context, const struct wined3d_state *state)
2751 {
2752     const struct wined3d_gl_info *gl_info = context->gl_info;
2753     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2754     struct wined3d_stream_info *stream_info = &context->stream_info;
2755     DWORD prev_all_vbo = stream_info->all_vbo;
2756
2757     TRACE("============================= Vertex Declaration =============================\n");
2758     context_stream_info_from_declaration(context, state, stream_info);
2759
2760     if (use_vs(state))
2761     {
2762         if (state->vertex_declaration->half_float_conv_needed && !stream_info->all_vbo)
2763         {
2764             TRACE("Using drawStridedSlow with vertex shaders for FLOAT16 conversion.\n");
2765             context->use_immediate_mode_draw = TRUE;
2766         }
2767         else
2768         {
2769             context->use_immediate_mode_draw = FALSE;
2770         }
2771     }
2772     else
2773     {
2774         WORD slow_mask = (1 << WINED3D_FFP_PSIZE);
2775         slow_mask |= -!gl_info->supported[ARB_VERTEX_ARRAY_BGRA]
2776                 & ((1 << WINED3D_FFP_DIFFUSE) | (1 << WINED3D_FFP_SPECULAR));
2777
2778         if (((stream_info->position_transformed && !d3d_info->xyzrhw)
2779                 || (stream_info->use_map & slow_mask)) && !stream_info->all_vbo)
2780             context->use_immediate_mode_draw = TRUE;
2781         else
2782             context->use_immediate_mode_draw = FALSE;
2783     }
2784
2785     if (prev_all_vbo != stream_info->all_vbo)
2786         context_invalidate_state(context, STATE_INDEXBUFFER);
2787 }
2788
2789 /* Context activation is done by the caller. */
2790 static void context_preload_texture(struct wined3d_context *context,
2791         const struct wined3d_state *state, unsigned int idx)
2792 {
2793     struct wined3d_texture *texture;
2794
2795     if (!(texture = state->textures[idx]))
2796         return;
2797
2798     wined3d_texture_load(texture, context, state->sampler_states[idx][WINED3D_SAMP_SRGB_TEXTURE]);
2799 }
2800
2801 /* Context activation is done by the caller. */
2802 static void context_preload_textures(struct wined3d_context *context, const struct wined3d_state *state)
2803 {
2804     unsigned int i;
2805
2806     if (use_vs(state))
2807     {
2808         for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i)
2809         {
2810             if (state->shader[WINED3D_SHADER_TYPE_VERTEX]->reg_maps.sampler_type[i])
2811                 context_preload_texture(context, state, MAX_FRAGMENT_SAMPLERS + i);
2812         }
2813     }
2814
2815     if (use_ps(state))
2816     {
2817         for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i)
2818         {
2819             if (state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.sampler_type[i])
2820                 context_preload_texture(context, state, i);
2821         }
2822     }
2823     else
2824     {
2825         WORD ffu_map = context->fixed_function_usage_map;
2826
2827         for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2828         {
2829             if (ffu_map & 1)
2830                 context_preload_texture(context, state, i);
2831         }
2832     }
2833 }
2834
2835 /* Context activation is done by the caller. */
2836 BOOL context_apply_draw_state(struct wined3d_context *context, struct wined3d_device *device)
2837 {
2838     const struct wined3d_state *state = &device->state;
2839     const struct StateEntry *state_table = context->state_table;
2840     const struct wined3d_fb_state *fb = state->fb;
2841     unsigned int i;
2842
2843     if (!context_validate_rt_config(context->gl_info->limits.buffers,
2844             fb->render_targets, fb->depth_stencil))
2845         return FALSE;
2846
2847     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO && isStateDirty(context, STATE_FRAMEBUFFER))
2848     {
2849         context_validate_onscreen_formats(context, fb->depth_stencil);
2850     }
2851
2852     /* Preload resources before FBO setup. Texture preload in particular may
2853      * result in changes to the current FBO, due to using e.g. FBO blits for
2854      * updating a resource location. */
2855     context_update_tex_unit_map(context, state);
2856     context_preload_textures(context, state);
2857     if (isStateDirty(context, STATE_VDECL) || isStateDirty(context, STATE_STREAMSRC))
2858         context_update_stream_info(context, state);
2859     if (state->index_buffer)
2860     {
2861         if (context->stream_info.all_vbo)
2862             buffer_internal_preload(state->index_buffer, context, state);
2863         else
2864             buffer_get_sysmem(state->index_buffer, context);
2865     }
2866
2867     for (i = 0; i < context->numDirtyEntries; ++i)
2868     {
2869         DWORD rep = context->dirtyArray[i];
2870         DWORD idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
2871         BYTE shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
2872         context->isStateDirty[idx] &= ~(1 << shift);
2873         state_table[rep].apply(context, state, rep);
2874     }
2875
2876     if (context->shader_update_mask)
2877     {
2878         device->shader_backend->shader_select(device->shader_priv, context, state);
2879         context->shader_update_mask = 0;
2880     }
2881
2882     if (context->constant_update_mask)
2883     {
2884         device->shader_backend->shader_load_constants(device->shader_priv, context, state);
2885         context->constant_update_mask = 0;
2886     }
2887
2888     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2889     {
2890         context_check_fbo_status(context, GL_FRAMEBUFFER);
2891     }
2892
2893     context->numDirtyEntries = 0; /* This makes the whole list clean */
2894     context->last_was_blit = FALSE;
2895
2896     return TRUE;
2897 }
2898
2899 static void context_setup_target(struct wined3d_context *context, struct wined3d_surface *target)
2900 {
2901     BOOL old_render_offscreen = context->render_offscreen, render_offscreen;
2902
2903     render_offscreen = surface_is_offscreen(target);
2904     if (context->current_rt == target && render_offscreen == old_render_offscreen) return;
2905
2906     /* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
2907      * the alpha blend state changes with different render target formats. */
2908     if (!context->current_rt)
2909     {
2910         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2911     }
2912     else
2913     {
2914         const struct wined3d_format *old = context->current_rt->resource.format;
2915         const struct wined3d_format *new = target->resource.format;
2916
2917         if (old->id != new->id)
2918         {
2919             /* Disable blending when the alpha mask has changed and when a format doesn't support blending. */
2920             if ((old->alpha_size && !new->alpha_size) || (!old->alpha_size && new->alpha_size)
2921                     || !(new->flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
2922                 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2923
2924             /* Update sRGB writing when switching between formats that do/do not support sRGB writing */
2925             if ((old->flags & WINED3DFMT_FLAG_SRGB_WRITE) != (new->flags & WINED3DFMT_FLAG_SRGB_WRITE))
2926                 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SRGBWRITEENABLE));
2927         }
2928
2929         /* When switching away from an offscreen render target, and we're not
2930          * using FBOs, we have to read the drawable into the texture. This is
2931          * done via PreLoad (and WINED3D_LOCATION_DRAWABLE set on the surface).
2932          * There are some things that need care though. PreLoad needs a GL context,
2933          * and FindContext is called before the context is activated. It also
2934          * has to be called with the old rendertarget active, otherwise a
2935          * wrong drawable is read. */
2936         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
2937                 && old_render_offscreen && context->current_rt != target)
2938         {
2939             struct wined3d_texture *texture = context->current_rt->container;
2940
2941             /* Read the back buffer of the old drawable into the destination texture. */
2942             if (texture->texture_srgb.name)
2943                 wined3d_texture_load(texture, context, TRUE);
2944             wined3d_texture_load(texture, context, FALSE);
2945             surface_invalidate_location(context->current_rt, WINED3D_LOCATION_DRAWABLE);
2946         }
2947     }
2948
2949     context->current_rt = target;
2950     context_set_render_offscreen(context, render_offscreen);
2951 }
2952
2953 struct wined3d_context *context_acquire(const struct wined3d_device *device, struct wined3d_surface *target)
2954 {
2955     struct wined3d_context *current_context = context_get_current();
2956     struct wined3d_context *context;
2957
2958     TRACE("device %p, target %p.\n", device, target);
2959
2960     if (current_context && current_context->destroyed)
2961         current_context = NULL;
2962
2963     if (!target)
2964     {
2965         if (current_context
2966                 && current_context->current_rt
2967                 && current_context->swapchain->device == device)
2968         {
2969             target = current_context->current_rt;
2970         }
2971         else
2972         {
2973             struct wined3d_swapchain *swapchain = device->swapchains[0];
2974             if (swapchain->back_buffers)
2975                 target = swapchain->back_buffers[0];
2976             else
2977                 target = swapchain->front_buffer;
2978         }
2979     }
2980
2981     if (current_context && current_context->current_rt == target)
2982     {
2983         context = current_context;
2984     }
2985     else if (target->swapchain)
2986     {
2987         TRACE("Rendering onscreen.\n");
2988
2989         context = swapchain_get_context(target->swapchain);
2990     }
2991     else
2992     {
2993         TRACE("Rendering offscreen.\n");
2994
2995         /* Stay with the current context if possible. Otherwise use the
2996          * context for the primary swapchain. */
2997         if (current_context && current_context->swapchain->device == device)
2998             context = current_context;
2999         else
3000             context = swapchain_get_context(device->swapchains[0]);
3001     }
3002
3003     context_update_window(context);
3004     context_setup_target(context, target);
3005     context_enter(context);
3006     if (!context->valid) return context;
3007
3008     if (context != current_context)
3009     {
3010         if (!context_set_current(context))
3011             ERR("Failed to activate the new context.\n");
3012     }
3013     else if (context->restore_ctx)
3014     {
3015         context_set_gl_context(context);
3016     }
3017
3018     return context;
3019 }