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_restore_pixel_format(struct wined3d_context *ctx)
 723 {
 724     const struct wined3d_gl_info *gl_info = ctx->gl_info;
 725     BOOL ret = FALSE;
 726
 727     if (ctx->restore_pf && IsWindow(ctx->restore_pf_win))
 728     {
 729         if (ctx->gl_info->supported[WGL_WINE_PIXEL_FORMAT_PASSTHROUGH])
 730         {
 731             HDC dc = GetDC(ctx->restore_pf_win);
 732             if (dc)
 733             {
 734                 if (!(ret = GL_EXTCALL(wglSetPixelFormatWINE(dc, ctx->restore_pf))))
 735                 {
 736                     ERR("wglSetPixelFormatWINE failed to restore pixel format %d on window %p.\n",
 737                             ctx->restore_pf, ctx->restore_pf_win);
 738                 }
 739                 ReleaseDC(ctx->restore_pf_win, dc);
 740             }
 741         }
 742         else
 743         {
 744             ERR("can't restore pixel format %d on window %p\n", ctx->restore_pf, ctx->restore_pf_win);
 745         }
 746     }
 747
 748     ctx->restore_pf = 0;
 749     ctx->restore_pf_win = NULL;
 750     return ret;
 751 }
 752
 753 static BOOL context_set_pixel_format(struct wined3d_context *context, HDC dc, BOOL private, int format)
 754 {
 755     const struct wined3d_gl_info *gl_info = context->gl_info;
 756     int current;
 757
 758     if (dc == context->hdc && context->hdc_is_private && context->hdc_has_format)
 759         return TRUE;
 760
 761     current = GetPixelFormat(dc);
 762     if (current == format) goto success;
 763
 764     if (!current)
 765     {
 766         if (!SetPixelFormat(dc, format, NULL))
 767         {
 768             /* This may also happen if the dc belongs to a destroyed window. */
 769             WARN("Failed to set pixel format %d on device context %p, last error %#x.\n",
 770                     format, dc, GetLastError());
 771             return FALSE;
 772         }
 773
 774         context->restore_pf = 0;
 775         context->restore_pf_win = private ? NULL : WindowFromDC(dc);
 776         goto success;
 777     }
 778
 779     /* By default WGL doesn't allow pixel format adjustments but we need it
 780      * here. For this reason there's a Wine specific wglSetPixelFormat()
 781      * which allows us to set the pixel format multiple times. Only use it
 782      * when really needed. */
 783     if (gl_info->supported[WGL_WINE_PIXEL_FORMAT_PASSTHROUGH])
 784     {
 785         HWND win;
 786
 787         if (!GL_EXTCALL(wglSetPixelFormatWINE(dc, format)))
 788         {
 789             ERR("wglSetPixelFormatWINE failed to set pixel format %d on device context %p.\n",
 790                     format, dc);
 791             return FALSE;
 792         }
 793
 794         win = private ? NULL : WindowFromDC(dc);
 795         if (win != context->restore_pf_win)
 796         {
 797             context_restore_pixel_format(context);
 798
 799             context->restore_pf = private ? 0 : current;
 800             context->restore_pf_win = win;
 801         }
 802
 803         goto success;
 804     }
 805
 806     /* OpenGL doesn't allow pixel format adjustments. Print an error and
 807      * continue using the old format. There's a big chance that the old
 808      * format works although with a performance hit and perhaps rendering
 809      * errors. */
 810     ERR("Unable to set pixel format %d on device context %p. Already using format %d.\n",
 811             format, dc, current);
 812     return TRUE;
 813
 814 success:
 815     if (dc == context->hdc && context->hdc_is_private)
 816         context->hdc_has_format = TRUE;
 817     return TRUE;
 818 }
 819
 820 static BOOL context_set_gl_context(struct wined3d_context *ctx)
 821 {
 822     struct wined3d_swapchain *swapchain = ctx->swapchain;
 823     BOOL backup = FALSE;
 824
 825     if (!context_set_pixel_format(ctx, ctx->hdc, ctx->hdc_is_private, ctx->pixel_format))
 826     {
 827         WARN("Failed to set pixel format %d on device context %p.\n",
 828                 ctx->pixel_format, ctx->hdc);
 829         backup = TRUE;
 830     }
 831
 832     if (backup || !wglMakeCurrent(ctx->hdc, ctx->glCtx))
 833     {
 834         HDC dc;
 835
 836         WARN("Failed to make GL context %p current on device context %p, last error %#x.\n",
 837                 ctx->glCtx, ctx->hdc, GetLastError());
 838         ctx->valid = 0;
 839         WARN("Trying fallback to the backup window.\n");
 840
 841         /* FIXME: If the context is destroyed it's no longer associated with
 842          * a swapchain, so we can't use the swapchain to get a backup dc. To
 843          * make this work windowless contexts would need to be handled by the
 844          * device. */
 845         if (ctx->destroyed)
 846         {
 847             FIXME("Unable to get backup dc for destroyed context %p.\n", ctx);
 848             context_set_current(NULL);
 849             return FALSE;
 850         }
 851
 852         if (!(dc = swapchain_get_backup_dc(swapchain)))
 853         {
 854             context_set_current(NULL);
 855             return FALSE;
 856         }
 857
 858         if (!context_set_pixel_format(ctx, dc, TRUE, ctx->pixel_format))
 859         {
 860             ERR("Failed to set pixel format %d on device context %p.\n",
 861                     ctx->pixel_format, dc);
 862             context_set_current(NULL);
 863             return FALSE;
 864         }
 865
 866         if (!wglMakeCurrent(dc, ctx->glCtx))
 867         {
 868             ERR("Fallback to backup window (dc %p) failed too, last error %#x.\n",
 869                     dc, GetLastError());
 870             context_set_current(NULL);
 871             return FALSE;
 872         }
 873
 874         ctx->valid = 1;
 875     }
 876     ctx->needs_set = 0;
 877     return TRUE;
 878 }
 879
 880 static void context_restore_gl_context(const struct wined3d_gl_info *gl_info, HDC dc, HGLRC gl_ctx)
 881 {
 882     if (!wglMakeCurrent(dc, gl_ctx))
 883     {
 884         ERR("Failed to restore GL context %p on device context %p, last error %#x.\n",
 885                 gl_ctx, dc, GetLastError());
 886         context_set_current(NULL);
 887     }
 888 }
 889
 890 static void context_update_window(struct wined3d_context *context)
 891 {
 892     if (context->win_handle == context->swapchain->win_handle)
 893         return;
 894
 895     TRACE("Updating context %p window from %p to %p.\n",
 896             context, context->win_handle, context->swapchain->win_handle);
 897
 898     if (context->hdc)
 899         wined3d_release_dc(context->win_handle, context->hdc);
 900
 901     context->win_handle = context->swapchain->win_handle;
 902     context->hdc_is_private = FALSE;
 903     context->hdc_has_format = FALSE;
 904     context->needs_set = 1;
 905     context->valid = 1;
 906
 907     if (!(context->hdc = GetDC(context->win_handle)))
 908     {
 909         ERR("Failed to get a device context for window %p.\n", context->win_handle);
 910         context->valid = 0;
 911     }
 912 }
 913
 914 static void context_destroy_gl_resources(struct wined3d_context *context)
 915 {
 916     const struct wined3d_gl_info *gl_info = context->gl_info;
 917     struct wined3d_occlusion_query *occlusion_query;
 918     struct wined3d_event_query *event_query;
 919     struct fbo_entry *entry, *entry2;
 920     HGLRC restore_ctx;
 921     HDC restore_dc;
 922     unsigned int i;
 923
 924     restore_ctx = wglGetCurrentContext();
 925     restore_dc = wglGetCurrentDC();
 926
 927     if (restore_ctx == context->glCtx)
 928         restore_ctx = NULL;
 929     else if (context->valid)
 930         context_set_gl_context(context);
 931
 932     LIST_FOR_EACH_ENTRY(occlusion_query, &context->occlusion_queries, struct wined3d_occlusion_query, entry)
 933     {
 934         if (context->valid && gl_info->supported[ARB_OCCLUSION_QUERY])
 935             GL_EXTCALL(glDeleteQueriesARB(1, &occlusion_query->id));
 936         occlusion_query->context = NULL;
 937     }
 938
 939     LIST_FOR_EACH_ENTRY(event_query, &context->event_queries, struct wined3d_event_query, entry)
 940     {
 941         if (context->valid)
 942         {
 943             if (gl_info->supported[ARB_SYNC])
 944             {
 945                 if (event_query->object.sync) GL_EXTCALL(glDeleteSync(event_query->object.sync));
 946             }
 947             else if (gl_info->supported[APPLE_FENCE]) GL_EXTCALL(glDeleteFencesAPPLE(1, &event_query->object.id));
 948             else if (gl_info->supported[NV_FENCE]) GL_EXTCALL(glDeleteFencesNV(1, &event_query->object.id));
 949         }
 950         event_query->context = NULL;
 951     }
 952
 953     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
 954     {
 955         if (!context->valid) entry->id = 0;
 956         context_destroy_fbo_entry(context, entry);
 957     }
 958
 959     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
 960     {
 961         if (!context->valid) entry->id = 0;
 962         context_destroy_fbo_entry(context, entry);
 963     }
 964
 965     if (context->valid)
 966     {
 967         if (context->dummy_arbfp_prog)
 968         {
 969             GL_EXTCALL(glDeleteProgramsARB(1, &context->dummy_arbfp_prog));
 970         }
 971
 972         if (gl_info->supported[ARB_OCCLUSION_QUERY])
 973             GL_EXTCALL(glDeleteQueriesARB(context->free_occlusion_query_count, context->free_occlusion_queries));
 974
 975         if (gl_info->supported[ARB_SYNC])
 976         {
 977             for (i = 0; i < context->free_event_query_count; ++i)
 978             {
 979                 GL_EXTCALL(glDeleteSync(context->free_event_queries[i].sync));
 980             }
 981         }
 982         else if (gl_info->supported[APPLE_FENCE])
 983         {
 984             for (i = 0; i < context->free_event_query_count; ++i)
 985             {
 986                 GL_EXTCALL(glDeleteFencesAPPLE(1, &context->free_event_queries[i].id));
 987             }
 988         }
 989         else if (gl_info->supported[NV_FENCE])
 990         {
 991             for (i = 0; i < context->free_event_query_count; ++i)
 992             {
 993                 GL_EXTCALL(glDeleteFencesNV(1, &context->free_event_queries[i].id));
 994             }
 995         }
 996
 997         checkGLcall("context cleanup");
 998     }
 999
1000     HeapFree(GetProcessHeap(), 0, context->free_occlusion_queries);
1001     HeapFree(GetProcessHeap(), 0, context->free_event_queries);
1002
1003     context_restore_pixel_format(context);
1004     if (restore_ctx)
1005     {
1006         context_restore_gl_context(gl_info, restore_dc, restore_ctx);
1007     }
1008     else if (wglGetCurrentContext() && !wglMakeCurrent(NULL, NULL))
1009     {
1010         ERR("Failed to disable GL context.\n");
1011     }
1012
1013     wined3d_release_dc(context->win_handle, context->hdc);
1014
1015     if (!wglDeleteContext(context->glCtx))
1016     {
1017         DWORD err = GetLastError();
1018         ERR("wglDeleteContext(%p) failed, last error %#x.\n", context->glCtx, err);
1019     }
1020 }
1021
1022 DWORD context_get_tls_idx(void)
1023 {
1024     return wined3d_context_tls_idx;
1025 }
1026
1027 void context_set_tls_idx(DWORD idx)
1028 {
1029     wined3d_context_tls_idx = idx;
1030 }
1031
1032 struct wined3d_context *context_get_current(void)
1033 {
1034     return TlsGetValue(wined3d_context_tls_idx);
1035 }
1036
1037 BOOL context_set_current(struct wined3d_context *ctx)
1038 {
1039     struct wined3d_context *old = context_get_current();
1040
1041     if (old == ctx)
1042     {
1043         TRACE("Already using D3D context %p.\n", ctx);
1044         return TRUE;
1045     }
1046
1047     if (old)
1048     {
1049         if (old->destroyed)
1050         {
1051             TRACE("Switching away from destroyed context %p.\n", old);
1052             context_destroy_gl_resources(old);
1053             HeapFree(GetProcessHeap(), 0, (void *)old->gl_info);
1054             HeapFree(GetProcessHeap(), 0, old);
1055         }
1056         else
1057         {
1058             old->current = 0;
1059         }
1060     }
1061
1062     if (ctx)
1063     {
1064         if (!ctx->valid)
1065         {
1066             ERR("Trying to make invalid context %p current\n", ctx);
1067             return FALSE;
1068         }
1069
1070         TRACE("Switching to D3D context %p, GL context %p, device context %p.\n", ctx, ctx->glCtx, ctx->hdc);
1071         if (!context_set_gl_context(ctx))
1072             return FALSE;
1073         ctx->current = 1;
1074     }
1075     else if(wglGetCurrentContext())
1076     {
1077         TRACE("Clearing current D3D context.\n");
1078         if (!wglMakeCurrent(NULL, NULL))
1079         {
1080             DWORD err = GetLastError();
1081             ERR("Failed to clear current GL context, last error %#x.\n", err);
1082             TlsSetValue(wined3d_context_tls_idx, NULL);
1083             return FALSE;
1084         }
1085     }
1086
1087     return TlsSetValue(wined3d_context_tls_idx, ctx);
1088 }
1089
1090 void context_release(struct wined3d_context *context)
1091 {
1092     TRACE("Releasing context %p, level %u.\n", context, context->level);
1093
1094     if (WARN_ON(d3d))
1095     {
1096         if (!context->level)
1097             WARN("Context %p is not active.\n", context);
1098         else if (context != context_get_current())
1099             WARN("Context %p is not the current context.\n", context);
1100     }
1101
1102     if (!--context->level)
1103     {
1104         if (context_restore_pixel_format(context))
1105             context->needs_set = 1;
1106         if (context->restore_ctx)
1107         {
1108             TRACE("Restoring GL context %p on device context %p.\n", context->restore_ctx, context->restore_dc);
1109             context_restore_gl_context(context->gl_info, context->restore_dc, context->restore_ctx);
1110             context->restore_ctx = NULL;
1111             context->restore_dc = NULL;
1112         }
1113     }
1114 }
1115
1116 static void context_enter(struct wined3d_context *context)
1117 {
1118     TRACE("Entering context %p, level %u.\n", context, context->level + 1);
1119
1120     if (!context->level++)
1121     {
1122         const struct wined3d_context *current_context = context_get_current();
1123         HGLRC current_gl = wglGetCurrentContext();
1124
1125         if (current_gl && (!current_context || current_context->glCtx != current_gl))
1126         {
1127             TRACE("Another GL context (%p on device context %p) is already current.\n",
1128                     current_gl, wglGetCurrentDC());
1129             context->restore_ctx = current_gl;
1130             context->restore_dc = wglGetCurrentDC();
1131             context->needs_set = 1;
1132         }
1133         else if (!context->needs_set && !(context->hdc_is_private && context->hdc_has_format)
1134                     && context->pixel_format != GetPixelFormat(context->hdc))
1135             context->needs_set = 1;
1136     }
1137 }
1138
1139 void context_invalidate_state(struct wined3d_context *context, DWORD state)
1140 {
1141     DWORD rep = context->state_table[state].representative;
1142     DWORD idx;
1143     BYTE shift;
1144
1145     if (isStateDirty(context, rep)) return;
1146
1147     context->dirtyArray[context->numDirtyEntries++] = rep;
1148     idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
1149     shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
1150     context->isStateDirty[idx] |= (1 << shift);
1151 }
1152
1153 /* This function takes care of wined3d pixel format selection. */
1154 static int context_choose_pixel_format(const struct wined3d_device *device, HDC hdc,
1155         const struct wined3d_format *color_format, const struct wined3d_format *ds_format,
1156         BOOL auxBuffers, BOOL findCompatible)
1157 {
1158     int iPixelFormat=0;
1159     BYTE redBits, greenBits, blueBits, alphaBits, colorBits;
1160     BYTE depthBits=0, stencilBits=0;
1161     unsigned int current_value;
1162     unsigned int cfg_count = device->adapter->cfg_count;
1163     unsigned int i;
1164
1165     TRACE("device %p, dc %p, color_format %s, ds_format %s, aux_buffers %#x, find_compatible %#x.\n",
1166             device, hdc, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id),
1167             auxBuffers, findCompatible);
1168
1169     if (!getColorBits(color_format, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits))
1170     {
1171         ERR("Unable to get color bits for format %s (%#x)!\n",
1172                 debug_d3dformat(color_format->id), color_format->id);
1173         return 0;
1174     }
1175
1176     getDepthStencilBits(ds_format, &depthBits, &stencilBits);
1177
1178     current_value = 0;
1179     for (i = 0; i < cfg_count; ++i)
1180     {
1181         const struct wined3d_pixel_format *cfg = &device->adapter->cfgs[i];
1182         unsigned int value;
1183
1184         /* For now only accept RGBA formats. Perhaps some day we will
1185          * allow floating point formats for pbuffers. */
1186         if (cfg->iPixelType != WGL_TYPE_RGBA_ARB)
1187             continue;
1188         /* In window mode we need a window drawable format and double buffering. */
1189         if (!(cfg->windowDrawable && cfg->doubleBuffer))
1190             continue;
1191         if (cfg->redSize < redBits)
1192             continue;
1193         if (cfg->greenSize < greenBits)
1194             continue;
1195         if (cfg->blueSize < blueBits)
1196             continue;
1197         if (cfg->alphaSize < alphaBits)
1198             continue;
1199         if (cfg->depthSize < depthBits)
1200             continue;
1201         if (stencilBits && cfg->stencilSize != stencilBits)
1202             continue;
1203         /* Check multisampling support. */
1204         if (cfg->numSamples)
1205             continue;
1206
1207         value = 1;
1208         /* We try to locate a format which matches our requirements exactly. In case of
1209          * depth it is no problem to emulate 16-bit using e.g. 24-bit, so accept that. */
1210         if (cfg->depthSize == depthBits)
1211             value += 1;
1212         if (cfg->stencilSize == stencilBits)
1213             value += 2;
1214         if (cfg->alphaSize == alphaBits)
1215             value += 4;
1216         /* We like to have aux buffers in backbuffer mode */
1217         if (auxBuffers && cfg->auxBuffers)
1218             value += 8;
1219         if (cfg->redSize == redBits
1220                 && cfg->greenSize == greenBits
1221                 && cfg->blueSize == blueBits)
1222             value += 16;
1223
1224         if (value > current_value)
1225         {
1226             iPixelFormat = cfg->iPixelFormat;
1227             current_value = value;
1228         }
1229     }
1230
1231     /* When findCompatible is set and no suitable format was found, let ChoosePixelFormat choose a pixel format in order not to crash. */
1232     if(!iPixelFormat && !findCompatible) {
1233         ERR("Can't find a suitable iPixelFormat\n");
1234         return FALSE;
1235     } else if(!iPixelFormat) {
1236         PIXELFORMATDESCRIPTOR pfd;
1237
1238         TRACE("Falling back to ChoosePixelFormat as we weren't able to find an exactly matching pixel format\n");
1239         /* PixelFormat selection */
1240         ZeroMemory(&pfd, sizeof(pfd));
1241         pfd.nSize      = sizeof(pfd);
1242         pfd.nVersion   = 1;
1243         pfd.dwFlags    = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW;/*PFD_GENERIC_ACCELERATED*/
1244         pfd.iPixelType = PFD_TYPE_RGBA;
1245         pfd.cAlphaBits = alphaBits;
1246         pfd.cColorBits = colorBits;
1247         pfd.cDepthBits = depthBits;
1248         pfd.cStencilBits = stencilBits;
1249         pfd.iLayerType = PFD_MAIN_PLANE;
1250
1251         iPixelFormat = ChoosePixelFormat(hdc, &pfd);
1252         if(!iPixelFormat) {
1253             /* If this happens something is very wrong as ChoosePixelFormat barely fails */
1254             ERR("Can't find a suitable iPixelFormat\n");
1255             return FALSE;
1256         }
1257     }
1258
1259     TRACE("Found iPixelFormat=%d for ColorFormat=%s, DepthStencilFormat=%s\n",
1260             iPixelFormat, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id));
1261     return iPixelFormat;
1262 }
1263
1264 /* Context activation is done by the caller. */
1265 static void bind_dummy_textures(const struct wined3d_device *device, const struct wined3d_context *context)
1266 {
1267     const struct wined3d_gl_info *gl_info = context->gl_info;
1268     unsigned int i, count = min(MAX_COMBINED_SAMPLERS, gl_info->limits.combined_samplers);
1269
1270     for (i = 0; i < count; ++i)
1271     {
1272         GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + i));
1273         checkGLcall("glActiveTextureARB");
1274
1275         gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[i]);
1276         checkGLcall("glBindTexture");
1277
1278         if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1279         {
1280             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[i]);
1281             checkGLcall("glBindTexture");
1282         }
1283
1284         if (gl_info->supported[EXT_TEXTURE3D])
1285         {
1286             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[i]);
1287             checkGLcall("glBindTexture");
1288         }
1289
1290         if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1291         {
1292             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[i]);
1293             checkGLcall("glBindTexture");
1294         }
1295     }
1296 }
1297
1298 BOOL context_debug_output_enabled(const struct wined3d_gl_info *gl_info)
1299 {
1300     return gl_info->supported[ARB_DEBUG_OUTPUT]
1301             && (ERR_ON(d3d) || FIXME_ON(d3d) || WARN_ON(d3d_perf));
1302 }
1303
1304 static void WINE_GLAPI wined3d_debug_callback(GLenum source, GLenum type, GLuint id,
1305         GLenum severity, GLsizei length, const char *message, void *ctx)
1306 {
1307     switch (type)
1308     {
1309         case GL_DEBUG_TYPE_ERROR_ARB:
1310             ERR("%p: %s.\n", ctx, debugstr_an(message, length));
1311             break;
1312
1313         case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB:
1314         case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB:
1315         case GL_DEBUG_TYPE_PORTABILITY_ARB:
1316             FIXME("%p: %s.\n", ctx, debugstr_an(message, length));
1317             break;
1318
1319         case GL_DEBUG_TYPE_PERFORMANCE_ARB:
1320             WARN_(d3d_perf)("%p: %s.\n", ctx, debugstr_an(message, length));
1321             break;
1322
1323         default:
1324             FIXME("ctx %p, type %#x: %s.\n", ctx, type, debugstr_an(message, length));
1325             break;
1326     }
1327 }
1328
1329 struct wined3d_context *context_create(struct wined3d_swapchain *swapchain,
1330         struct wined3d_surface *target, const struct wined3d_format *ds_format)
1331 {
1332     struct wined3d_device *device = swapchain->device;
1333     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
1334     const struct wined3d_format *color_format;
1335     struct wined3d_context *ret;
1336     BOOL auxBuffers = FALSE;
1337     HGLRC ctx, share_ctx;
1338     int pixel_format;
1339     unsigned int s;
1340     int swap_interval;
1341     DWORD state;
1342     HDC hdc;
1343     BOOL hdc_is_private = FALSE;
1344
1345     TRACE("swapchain %p, target %p, window %p.\n", swapchain, target, swapchain->win_handle);
1346
1347     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ret));
1348     if (!ret)
1349         return NULL;
1350
1351     ret->blit_targets = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1352             gl_info->limits.buffers * sizeof(*ret->blit_targets));
1353     if (!ret->blit_targets)
1354         goto out;
1355
1356     ret->draw_buffers = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1357             gl_info->limits.buffers * sizeof(*ret->draw_buffers));
1358     if (!ret->draw_buffers)
1359         goto out;
1360
1361     ret->free_occlusion_query_size = 4;
1362     ret->free_occlusion_queries = HeapAlloc(GetProcessHeap(), 0,
1363             ret->free_occlusion_query_size * sizeof(*ret->free_occlusion_queries));
1364     if (!ret->free_occlusion_queries)
1365         goto out;
1366
1367     list_init(&ret->occlusion_queries);
1368
1369     ret->free_event_query_size = 4;
1370     ret->free_event_queries = HeapAlloc(GetProcessHeap(), 0,
1371             ret->free_event_query_size * sizeof(*ret->free_event_queries));
1372     if (!ret->free_event_queries)
1373         goto out;
1374
1375     list_init(&ret->event_queries);
1376     list_init(&ret->fbo_list);
1377     list_init(&ret->fbo_destroy_list);
1378
1379     if (!device->shader_backend->shader_allocate_context_data(ret))
1380     {
1381         ERR("Failed to allocate shader backend context data.\n");
1382         goto out;
1383     }
1384
1385     /* Initialize the texture unit mapping to a 1:1 mapping */
1386     for (s = 0; s < MAX_COMBINED_SAMPLERS; ++s)
1387     {
1388         if (s < gl_info->limits.fragment_samplers)
1389         {
1390             ret->tex_unit_map[s] = s;
1391             ret->rev_tex_unit_map[s] = s;
1392         }
1393         else
1394         {
1395             ret->tex_unit_map[s] = WINED3D_UNMAPPED_STAGE;
1396             ret->rev_tex_unit_map[s] = WINED3D_UNMAPPED_STAGE;
1397         }
1398     }
1399
1400     if (!(hdc = GetDC(swapchain->win_handle)))
1401     {
1402         WARN("Failed to retireve device context, trying swapchain backup.\n");
1403
1404         if ((hdc = swapchain_get_backup_dc(swapchain)))
1405             hdc_is_private = TRUE;
1406         else
1407         {
1408             ERR("Failed to retrieve a device context.\n");
1409             goto out;
1410         }
1411     }
1412
1413     color_format = target->resource.format;
1414
1415     /* In case of ORM_BACKBUFFER, make sure to request an alpha component for
1416      * X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
1417     if (wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER)
1418     {
1419         auxBuffers = TRUE;
1420
1421         if (color_format->id == WINED3DFMT_B4G4R4X4_UNORM)
1422             color_format = wined3d_get_format(gl_info, WINED3DFMT_B4G4R4A4_UNORM);
1423         else if (color_format->id == WINED3DFMT_B8G8R8X8_UNORM)
1424             color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1425     }
1426
1427     /* DirectDraw supports 8bit paletted render targets and these are used by
1428      * old games like StarCraft and C&C. Most modern hardware doesn't support
1429      * 8bit natively so we perform some form of 8bit -> 32bit conversion. The
1430      * conversion (ab)uses the alpha component for storing the palette index.
1431      * For this reason we require a format with 8bit alpha, so request
1432      * A8R8G8B8. */
1433     if (color_format->id == WINED3DFMT_P8_UINT)
1434         color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1435
1436     /* Try to find a pixel format which matches our requirements. */
1437     pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, FALSE);
1438
1439     /* Try to locate a compatible format if we weren't able to find anything. */
1440     if (!pixel_format)
1441     {
1442         TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1443         pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, TRUE);
1444     }
1445
1446     /* If we still don't have a pixel format, something is very wrong as ChoosePixelFormat barely fails */
1447     if (!pixel_format)
1448     {
1449         ERR("Can't find a suitable pixel format.\n");
1450         goto out;
1451     }
1452
1453     context_enter(ret);
1454
1455     ret->gl_info = gl_info;
1456
1457     if (!context_set_pixel_format(ret, hdc, hdc_is_private, pixel_format))
1458     {
1459         ERR("Failed to set pixel format %d on device context %p.\n", pixel_format, hdc);
1460         context_release(ret);
1461         goto out;
1462     }
1463
1464     share_ctx = device->context_count ? device->contexts[0]->glCtx : NULL;
1465     if (gl_info->p_wglCreateContextAttribsARB)
1466     {
1467         unsigned int ctx_attrib_idx = 0;
1468         GLint ctx_attribs[3];
1469
1470         if (context_debug_output_enabled(gl_info))
1471         {
1472             ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_FLAGS_ARB;
1473             ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_DEBUG_BIT_ARB;
1474         }
1475         ctx_attribs[ctx_attrib_idx] = 0;
1476
1477         if (!(ctx = gl_info->p_wglCreateContextAttribsARB(hdc, share_ctx, ctx_attribs)))
1478         {
1479             ERR("Failed to create a WGL context.\n");
1480             context_release(ret);
1481             goto out;
1482         }
1483     }
1484     else
1485     {
1486         if (!(ctx = wglCreateContext(hdc)))
1487         {
1488             ERR("Failed to create a WGL context.\n");
1489             context_release(ret);
1490             goto out;
1491         }
1492
1493         if (share_ctx && !wglShareLists(share_ctx, ctx))
1494         {
1495             ERR("wglShareLists(%p, %p) failed, last error %#x.\n", share_ctx, ctx, GetLastError());
1496             context_release(ret);
1497             if (!wglDeleteContext(ctx))
1498                 ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1499             goto out;
1500         }
1501     }
1502
1503     if (!device_context_add(device, ret))
1504     {
1505         ERR("Failed to add the newly created context to the context list\n");
1506         context_release(ret);
1507         if (!wglDeleteContext(ctx))
1508             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1509         goto out;
1510     }
1511
1512     ret->d3d_info = &device->adapter->d3d_info;
1513     ret->state_table = device->StateTable;
1514
1515     /* Mark all states dirty to force a proper initialization of the states
1516      * on the first use of the context. */
1517     for (state = 0; state <= STATE_HIGHEST; ++state)
1518     {
1519         if (ret->state_table[state].representative)
1520             context_invalidate_state(ret, state);
1521     }
1522
1523     ret->swapchain = swapchain;
1524     ret->current_rt = target;
1525     ret->tid = GetCurrentThreadId();
1526
1527     ret->render_offscreen = surface_is_offscreen(target);
1528     ret->draw_buffers_mask = context_generate_rt_mask(GL_BACK);
1529     ret->valid = 1;
1530
1531     ret->glCtx = ctx;
1532     ret->win_handle = swapchain->win_handle;
1533     ret->hdc = hdc;
1534     ret->hdc_is_private = hdc_is_private;
1535     ret->hdc_has_format = TRUE;
1536     ret->pixel_format = pixel_format;
1537     ret->needs_set = 1;
1538
1539     /* Set up the context defaults */
1540     if (!context_set_current(ret))
1541     {
1542         ERR("Cannot activate context to set up defaults.\n");
1543         device_context_remove(device, ret);
1544         context_release(ret);
1545         if (!wglDeleteContext(ctx))
1546             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1547         goto out;
1548     }
1549
1550     if (context_debug_output_enabled(gl_info))
1551     {
1552         GL_EXTCALL(glDebugMessageCallbackARB(wined3d_debug_callback, ret));
1553         if (TRACE_ON(d3d_synchronous))
1554             gl_info->gl_ops.gl.p_glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
1555         GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_FALSE));
1556         if (ERR_ON(d3d))
1557         {
1558             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_ERROR_ARB,
1559                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1560         }
1561         if (FIXME_ON(d3d))
1562         {
1563             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB,
1564                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1565             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB,
1566                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1567             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_PORTABILITY_ARB,
1568                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1569         }
1570         if (WARN_ON(d3d_perf))
1571         {
1572             GL_EXTCALL(glDebugMessageControlARB(GL_DONT_CARE, GL_DEBUG_TYPE_PERFORMANCE_ARB,
1573                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1574         }
1575     }
1576
1577     switch (swapchain->desc.swap_interval)
1578     {
1579         case WINED3DPRESENT_INTERVAL_IMMEDIATE:
1580             swap_interval = 0;
1581             break;
1582         case WINED3DPRESENT_INTERVAL_DEFAULT:
1583         case WINED3DPRESENT_INTERVAL_ONE:
1584             swap_interval = 1;
1585             break;
1586         case WINED3DPRESENT_INTERVAL_TWO:
1587             swap_interval = 2;
1588             break;
1589         case WINED3DPRESENT_INTERVAL_THREE:
1590             swap_interval = 3;
1591             break;
1592         case WINED3DPRESENT_INTERVAL_FOUR:
1593             swap_interval = 4;
1594             break;
1595         default:
1596             FIXME("Unknown swap interval %#x.\n", swapchain->desc.swap_interval);
1597             swap_interval = 1;
1598     }
1599
1600     if (gl_info->supported[WGL_EXT_SWAP_CONTROL])
1601     {
1602         if (!GL_EXTCALL(wglSwapIntervalEXT(swap_interval)))
1603             ERR("wglSwapIntervalEXT failed to set swap interval %d for context %p, last error %#x\n",
1604                 swap_interval, ret, GetLastError());
1605     }
1606
1607     gl_info->gl_ops.gl.p_glGetIntegerv(GL_AUX_BUFFERS, &ret->aux_buffers);
1608
1609     TRACE("Setting up the screen\n");
1610
1611     gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
1612     checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
1613
1614     gl_info->gl_ops.gl.p_glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
1615     checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
1616
1617     gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1618     checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
1619
1620     gl_info->gl_ops.gl.p_glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);
1621     checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);");
1622     gl_info->gl_ops.gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);
1623     checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);");
1624
1625     if (gl_info->supported[ARB_VERTEX_BLEND])
1626     {
1627         /* Direct3D always uses n-1 weights for n world matrices and uses
1628          * 1 - sum for the last one this is equal to GL_WEIGHT_SUM_UNITY_ARB.
1629          * Enabling it doesn't do anything unless GL_VERTEX_BLEND_ARB isn't
1630          * enabled as well. */
1631         gl_info->gl_ops.gl.p_glEnable(GL_WEIGHT_SUM_UNITY_ARB);
1632         checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
1633     }
1634     if (gl_info->supported[NV_TEXTURE_SHADER2])
1635     {
1636         /* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
1637          * the previous texture where to source the offset from is always unit - 1.
1638          */
1639         for (s = 1; s < gl_info->limits.textures; ++s)
1640         {
1641             context_active_texture(ret, gl_info, s);
1642             gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_SHADER_NV,
1643                     GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
1644             checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...");
1645         }
1646     }
1647     if (gl_info->supported[ARB_FRAGMENT_PROGRAM])
1648     {
1649         /* MacOS(radeon X1600 at least, but most likely others too) refuses to draw if GLSL and ARBFP are
1650          * enabled, but the currently bound arbfp program is 0. Enabling ARBFP with prog 0 is invalid, but
1651          * GLSL should bypass this. This causes problems in programs that never use the fixed function pipeline,
1652          * because the ARBFP extension is enabled by the ARBFP pipeline at context creation, but no program
1653          * is ever assigned.
1654          *
1655          * So make sure a program is assigned to each context. The first real ARBFP use will set a different
1656          * program and the dummy program is destroyed when the context is destroyed.
1657          */
1658         const char *dummy_program =
1659                 "!!ARBfp1.0\n"
1660                 "MOV result.color, fragment.color.primary;\n"
1661                 "END\n";
1662         GL_EXTCALL(glGenProgramsARB(1, &ret->dummy_arbfp_prog));
1663         GL_EXTCALL(glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, ret->dummy_arbfp_prog));
1664         GL_EXTCALL(glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(dummy_program), dummy_program));
1665     }
1666
1667     if (gl_info->supported[ARB_POINT_SPRITE])
1668     {
1669         for (s = 0; s < gl_info->limits.textures; ++s)
1670         {
1671             context_active_texture(ret, gl_info, s);
1672             gl_info->gl_ops.gl.p_glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
1673             checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)");
1674         }
1675     }
1676
1677     if (gl_info->supported[ARB_PROVOKING_VERTEX])
1678     {
1679         GL_EXTCALL(glProvokingVertex(GL_FIRST_VERTEX_CONVENTION));
1680     }
1681     else if (gl_info->supported[EXT_PROVOKING_VERTEX])
1682     {
1683         GL_EXTCALL(glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT));
1684     }
1685     ret->shader_update_mask = (1 << WINED3D_SHADER_TYPE_PIXEL)
1686             | (1 << WINED3D_SHADER_TYPE_VERTEX)
1687             | (1 << WINED3D_SHADER_TYPE_GEOMETRY);
1688
1689     /* If this happens to be the first context for the device, dummy textures
1690      * are not created yet. In that case, they will be created (and bound) by
1691      * create_dummy_textures right after this context is initialized. */
1692     if (device->dummy_texture_2d[0])
1693         bind_dummy_textures(device, ret);
1694
1695     TRACE("Created context %p.\n", ret);
1696
1697     return ret;
1698
1699 out:
1700     device->shader_backend->shader_free_context_data(ret);
1701     HeapFree(GetProcessHeap(), 0, ret->free_event_queries);
1702     HeapFree(GetProcessHeap(), 0, ret->free_occlusion_queries);
1703     HeapFree(GetProcessHeap(), 0, ret->draw_buffers);
1704     HeapFree(GetProcessHeap(), 0, ret->blit_targets);
1705     HeapFree(GetProcessHeap(), 0, ret);
1706     return NULL;
1707 }
1708
1709 void context_destroy(struct wined3d_device *device, struct wined3d_context *context)
1710 {
1711     BOOL destroy;
1712
1713     TRACE("Destroying ctx %p\n", context);
1714
1715     if (context->tid == GetCurrentThreadId() || !context->current)
1716     {
1717         context_destroy_gl_resources(context);
1718         TlsSetValue(wined3d_context_tls_idx, NULL);
1719         destroy = TRUE;
1720     }
1721     else
1722     {
1723         /* Make a copy of gl_info for context_destroy_gl_resources use, the one
1724            in wined3d_adapter may go away in the meantime */
1725         struct wined3d_gl_info *gl_info = HeapAlloc(GetProcessHeap(), 0, sizeof(*gl_info));
1726         *gl_info = *context->gl_info;
1727         context->gl_info = gl_info;
1728         context->destroyed = 1;
1729         destroy = FALSE;
1730     }
1731
1732     device->shader_backend->shader_free_context_data(context);
1733     HeapFree(GetProcessHeap(), 0, context->draw_buffers);
1734     HeapFree(GetProcessHeap(), 0, context->blit_targets);
1735     device_context_remove(device, context);
1736     if (destroy) HeapFree(GetProcessHeap(), 0, context);
1737 }
1738
1739 /* Context activation is done by the caller. */
1740 static void set_blit_dimension(const struct wined3d_gl_info *gl_info, UINT width, UINT height)
1741 {
1742     const GLdouble projection[] =
1743     {
1744         2.0 / width,          0.0,  0.0, 0.0,
1745                 0.0, 2.0 / height,  0.0, 0.0,
1746                 0.0,          0.0,  2.0, 0.0,
1747                -1.0,         -1.0, -1.0, 1.0,
1748     };
1749
1750     gl_info->gl_ops.gl.p_glMatrixMode(GL_PROJECTION);
1751     checkGLcall("glMatrixMode(GL_PROJECTION)");
1752     gl_info->gl_ops.gl.p_glLoadMatrixd(projection);
1753     checkGLcall("glLoadMatrixd");
1754     gl_info->gl_ops.gl.p_glViewport(0, 0, width, height);
1755     checkGLcall("glViewport");
1756 }
1757
1758 static void context_get_rt_size(const struct wined3d_context *context, SIZE *size)
1759 {
1760     const struct wined3d_surface *rt = context->current_rt;
1761
1762     if (rt->swapchain && rt->swapchain->front_buffer == rt)
1763     {
1764         RECT window_size;
1765
1766         GetClientRect(context->win_handle, &window_size);
1767         size->cx = window_size.right - window_size.left;
1768         size->cy = window_size.bottom - window_size.top;
1769
1770         return;
1771     }
1772
1773     size->cx = rt->resource.width;
1774     size->cy = rt->resource.height;
1775 }
1776
1777 /*****************************************************************************
1778  * SetupForBlit
1779  *
1780  * Sets up a context for DirectDraw blitting.
1781  * All texture units are disabled, texture unit 0 is set as current unit
1782  * fog, lighting, blending, alpha test, z test, scissor test, culling disabled
1783  * color writing enabled for all channels
1784  * register combiners disabled, shaders disabled
1785  * world matrix is set to identity, texture matrix 0 too
1786  * projection matrix is setup for drawing screen coordinates
1787  *
1788  * Params:
1789  *  This: Device to activate the context for
1790  *  context: Context to setup
1791  *
1792  *****************************************************************************/
1793 /* Context activation is done by the caller. */
1794 static void SetupForBlit(const struct wined3d_device *device, struct wined3d_context *context)
1795 {
1796     int i;
1797     const struct wined3d_gl_info *gl_info = context->gl_info;
1798     DWORD sampler;
1799     SIZE rt_size;
1800
1801     TRACE("Setting up context %p for blitting\n", context);
1802
1803     context_get_rt_size(context, &rt_size);
1804
1805     if (context->last_was_blit)
1806     {
1807         if (context->blit_w != rt_size.cx || context->blit_h != rt_size.cy)
1808         {
1809             set_blit_dimension(gl_info, rt_size.cx, rt_size.cy);
1810             context->blit_w = rt_size.cx;
1811             context->blit_h = rt_size.cy;
1812             /* No need to dirtify here, the states are still dirtified because
1813              * they weren't applied since the last SetupForBlit() call. */
1814         }
1815         TRACE("Context is already set up for blitting, nothing to do\n");
1816         return;
1817     }
1818     context->last_was_blit = TRUE;
1819
1820     /* Disable all textures. The caller can then bind a texture it wants to blit
1821      * from
1822      *
1823      * The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
1824      * function texture unit. No need to care for higher samplers
1825      */
1826     for (i = gl_info->limits.textures - 1; i > 0 ; --i)
1827     {
1828         sampler = context->rev_tex_unit_map[i];
1829         context_active_texture(context, gl_info, i);
1830
1831         if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1832         {
1833             gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1834             checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1835         }
1836         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
1837         checkGLcall("glDisable GL_TEXTURE_3D");
1838         if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1839         {
1840             gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
1841             checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1842         }
1843         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
1844         checkGLcall("glDisable GL_TEXTURE_2D");
1845
1846         gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1847         checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
1848
1849         if (sampler != WINED3D_UNMAPPED_STAGE)
1850         {
1851             if (sampler < MAX_TEXTURES)
1852                 context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_COLOR_OP));
1853             context_invalidate_state(context, STATE_SAMPLER(sampler));
1854         }
1855     }
1856     context_active_texture(context, gl_info, 0);
1857
1858     sampler = context->rev_tex_unit_map[0];
1859
1860     if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1861     {
1862         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1863         checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1864     }
1865     gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
1866     checkGLcall("glDisable GL_TEXTURE_3D");
1867     if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1868     {
1869         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
1870         checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1871     }
1872     gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
1873     checkGLcall("glDisable GL_TEXTURE_2D");
1874
1875     gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1876
1877     gl_info->gl_ops.gl.p_glMatrixMode(GL_TEXTURE);
1878     checkGLcall("glMatrixMode(GL_TEXTURE)");
1879     gl_info->gl_ops.gl.p_glLoadIdentity();
1880     checkGLcall("glLoadIdentity()");
1881
1882     if (gl_info->supported[EXT_TEXTURE_LOD_BIAS])
1883     {
1884         gl_info->gl_ops.gl.p_glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
1885                 GL_TEXTURE_LOD_BIAS_EXT, 0.0f);
1886         checkGLcall("glTexEnvf GL_TEXTURE_LOD_BIAS_EXT ...");
1887     }
1888
1889     if (sampler != WINED3D_UNMAPPED_STAGE)
1890     {
1891         if (sampler < MAX_TEXTURES)
1892         {
1893             context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_TEXTURE0 + sampler));
1894             context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_COLOR_OP));
1895         }
1896         context_invalidate_state(context, STATE_SAMPLER(sampler));
1897     }
1898
1899     /* Other misc states */
1900     gl_info->gl_ops.gl.p_glDisable(GL_ALPHA_TEST);
1901     checkGLcall("glDisable(GL_ALPHA_TEST)");
1902     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHATESTENABLE));
1903     gl_info->gl_ops.gl.p_glDisable(GL_LIGHTING);
1904     checkGLcall("glDisable GL_LIGHTING");
1905     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_LIGHTING));
1906     gl_info->gl_ops.gl.p_glDisable(GL_DEPTH_TEST);
1907     checkGLcall("glDisable GL_DEPTH_TEST");
1908     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ZENABLE));
1909     glDisableWINE(GL_FOG);
1910     checkGLcall("glDisable GL_FOG");
1911     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_FOGENABLE));
1912     gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
1913     checkGLcall("glDisable GL_BLEND");
1914     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
1915     gl_info->gl_ops.gl.p_glDisable(GL_CULL_FACE);
1916     checkGLcall("glDisable GL_CULL_FACE");
1917     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_CULLMODE));
1918     gl_info->gl_ops.gl.p_glDisable(GL_STENCIL_TEST);
1919     checkGLcall("glDisable GL_STENCIL_TEST");
1920     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_STENCILENABLE));
1921     gl_info->gl_ops.gl.p_glDisable(GL_SCISSOR_TEST);
1922     checkGLcall("glDisable GL_SCISSOR_TEST");
1923     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
1924     if (gl_info->supported[ARB_POINT_SPRITE])
1925     {
1926         gl_info->gl_ops.gl.p_glDisable(GL_POINT_SPRITE_ARB);
1927         checkGLcall("glDisable GL_POINT_SPRITE_ARB");
1928         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_POINTSPRITEENABLE));
1929     }
1930     gl_info->gl_ops.gl.p_glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
1931     checkGLcall("glColorMask");
1932     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
1933     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
1934     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
1935     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
1936     if (gl_info->supported[EXT_SECONDARY_COLOR])
1937     {
1938         gl_info->gl_ops.gl.p_glDisable(GL_COLOR_SUM_EXT);
1939         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SPECULARENABLE));
1940         checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
1941     }
1942
1943     /* Setup transforms */
1944     gl_info->gl_ops.gl.p_glMatrixMode(GL_MODELVIEW);
1945     checkGLcall("glMatrixMode(GL_MODELVIEW)");
1946     gl_info->gl_ops.gl.p_glLoadIdentity();
1947     checkGLcall("glLoadIdentity()");
1948     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_WORLD_MATRIX(0)));
1949
1950     context->last_was_rhw = TRUE;
1951     context_invalidate_state(context, STATE_VDECL); /* because of last_was_rhw = TRUE */
1952
1953     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
1954     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
1955     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
1956     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
1957     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
1958     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
1959     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_CLIPPING));
1960
1961     set_blit_dimension(gl_info, rt_size.cx, rt_size.cy);
1962
1963     /* Disable shaders */
1964     device->shader_backend->shader_disable(device->shader_priv, context);
1965
1966     context->blit_w = rt_size.cx;
1967     context->blit_h = rt_size.cy;
1968     context_invalidate_state(context, STATE_VIEWPORT);
1969     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
1970 }
1971
1972 static inline BOOL is_rt_mask_onscreen(DWORD rt_mask)
1973 {
1974     return rt_mask & (1 << 31);
1975 }
1976
1977 static inline GLenum draw_buffer_from_rt_mask(DWORD rt_mask)
1978 {
1979     return rt_mask & ~(1 << 31);
1980 }
1981
1982 /* Context activation is done by the caller. */
1983 static void context_apply_draw_buffers(struct wined3d_context *context, DWORD rt_mask)
1984 {
1985     const struct wined3d_gl_info *gl_info = context->gl_info;
1986
1987     if (!rt_mask)
1988     {
1989         gl_info->gl_ops.gl.p_glDrawBuffer(GL_NONE);
1990         checkGLcall("glDrawBuffer()");
1991     }
1992     else if (is_rt_mask_onscreen(rt_mask))
1993     {
1994         gl_info->gl_ops.gl.p_glDrawBuffer(draw_buffer_from_rt_mask(rt_mask));
1995         checkGLcall("glDrawBuffer()");
1996     }
1997     else
1998     {
1999         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2000         {
2001             unsigned int i = 0;
2002
2003             while (rt_mask)
2004             {
2005                 if (rt_mask & 1)
2006                     context->draw_buffers[i] = GL_COLOR_ATTACHMENT0 + i;
2007                 else
2008                     context->draw_buffers[i] = GL_NONE;
2009
2010                 rt_mask >>= 1;
2011                 ++i;
2012             }
2013
2014             if (gl_info->supported[ARB_DRAW_BUFFERS])
2015             {
2016                 GL_EXTCALL(glDrawBuffersARB(i, context->draw_buffers));
2017                 checkGLcall("glDrawBuffers()");
2018             }
2019             else
2020             {
2021                 gl_info->gl_ops.gl.p_glDrawBuffer(context->draw_buffers[0]);
2022                 checkGLcall("glDrawBuffer()");
2023             }
2024         }
2025         else
2026         {
2027             ERR("Unexpected draw buffers mask with backbuffer ORM.\n");
2028         }
2029     }
2030 }
2031
2032 /* Context activation is done by the caller. */
2033 void context_set_draw_buffer(struct wined3d_context *context, GLenum buffer)
2034 {
2035     const struct wined3d_gl_info *gl_info = context->gl_info;
2036     DWORD *current_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2037     DWORD new_mask = context_generate_rt_mask(buffer);
2038
2039     if (new_mask == *current_mask)
2040         return;
2041
2042     gl_info->gl_ops.gl.p_glDrawBuffer(buffer);
2043     checkGLcall("glDrawBuffer()");
2044
2045     *current_mask = new_mask;
2046 }
2047
2048 /* Context activation is done by the caller. */
2049 void context_active_texture(struct wined3d_context *context, const struct wined3d_gl_info *gl_info, unsigned int unit)
2050 {
2051     GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0 + unit));
2052     checkGLcall("glActiveTextureARB");
2053     context->active_texture = unit;
2054 }
2055
2056 void context_bind_texture(struct wined3d_context *context, GLenum target, GLuint name)
2057 {
2058     const struct wined3d_gl_info *gl_info = context->gl_info;
2059     DWORD unit = context->active_texture;
2060     DWORD old_texture_type = context->texture_type[unit];
2061
2062     if (name)
2063     {
2064         gl_info->gl_ops.gl.p_glBindTexture(target, name);
2065         checkGLcall("glBindTexture");
2066     }
2067     else
2068     {
2069         target = GL_NONE;
2070     }
2071
2072     if (old_texture_type != target)
2073     {
2074         const struct wined3d_device *device = context->swapchain->device;
2075
2076         switch (old_texture_type)
2077         {
2078             case GL_NONE:
2079                 /* nothing to do */
2080                 break;
2081             case GL_TEXTURE_2D:
2082                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[unit]);
2083                 checkGLcall("glBindTexture");
2084                 break;
2085             case GL_TEXTURE_RECTANGLE_ARB:
2086                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[unit]);
2087                 checkGLcall("glBindTexture");
2088                 break;
2089             case GL_TEXTURE_CUBE_MAP:
2090                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[unit]);
2091                 checkGLcall("glBindTexture");
2092                 break;
2093             case GL_TEXTURE_3D:
2094                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[unit]);
2095                 checkGLcall("glBindTexture");
2096                 break;
2097             default:
2098                 ERR("Unexpected texture target %#x\n", old_texture_type);
2099         }
2100
2101         context->texture_type[unit] = target;
2102     }
2103 }
2104
2105 static void context_set_render_offscreen(struct wined3d_context *context, BOOL offscreen)
2106 {
2107     if (context->render_offscreen == offscreen) return;
2108
2109     context_invalidate_state(context, STATE_POINTSPRITECOORDORIGIN);
2110     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
2111     context_invalidate_state(context, STATE_VIEWPORT);
2112     context_invalidate_state(context, STATE_SCISSORRECT);
2113     context_invalidate_state(context, STATE_FRONTFACE);
2114     context->render_offscreen = offscreen;
2115 }
2116
2117 static BOOL match_depth_stencil_format(const struct wined3d_format *existing,
2118         const struct wined3d_format *required)
2119 {
2120     BYTE existing_depth, existing_stencil, required_depth, required_stencil;
2121
2122     if (existing == required) return TRUE;
2123     if ((existing->flags & WINED3DFMT_FLAG_FLOAT) != (required->flags & WINED3DFMT_FLAG_FLOAT)) return FALSE;
2124
2125     getDepthStencilBits(existing, &existing_depth, &existing_stencil);
2126     getDepthStencilBits(required, &required_depth, &required_stencil);
2127
2128     if(existing_depth < required_depth) return FALSE;
2129     /* If stencil bits are used the exact amount is required - otherwise wrapping
2130      * won't work correctly */
2131     if(required_stencil && required_stencil != existing_stencil) return FALSE;
2132     return TRUE;
2133 }
2134
2135 /* The caller provides a context */
2136 static void context_validate_onscreen_formats(struct wined3d_context *context,
2137         const struct wined3d_surface *depth_stencil)
2138 {
2139     /* Onscreen surfaces are always in a swapchain */
2140     struct wined3d_swapchain *swapchain = context->current_rt->swapchain;
2141
2142     if (context->render_offscreen || !depth_stencil) return;
2143     if (match_depth_stencil_format(swapchain->ds_format, depth_stencil->resource.format)) return;
2144
2145     /* TODO: If the requested format would satisfy the needs of the existing one(reverse match),
2146      * or no onscreen depth buffer was created, the OpenGL drawable could be changed to the new
2147      * format. */
2148     WARN("Depth stencil format is not supported by WGL, rendering the backbuffer in an FBO\n");
2149
2150     /* The currently active context is the necessary context to access the swapchain's onscreen buffers */
2151     surface_load_location(context->current_rt, WINED3D_LOCATION_TEXTURE_RGB);
2152     swapchain->render_to_fbo = TRUE;
2153     swapchain_update_draw_bindings(swapchain);
2154     context_set_render_offscreen(context, TRUE);
2155 }
2156
2157 static DWORD context_generate_rt_mask_no_fbo(const struct wined3d_device *device, const struct wined3d_surface *rt)
2158 {
2159     if (!rt || rt->resource.format->id == WINED3DFMT_NULL)
2160         return 0;
2161     else if (rt->swapchain)
2162         return context_generate_rt_mask_from_surface(rt);
2163     else
2164         return context_generate_rt_mask(device->offscreenBuffer);
2165 }
2166
2167 /* Context activation is done by the caller. */
2168 void context_apply_blit_state(struct wined3d_context *context, const struct wined3d_device *device)
2169 {
2170     struct wined3d_surface *rt = context->current_rt;
2171     DWORD rt_mask, *cur_mask;
2172
2173     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2174     {
2175         context_validate_onscreen_formats(context, NULL);
2176
2177         if (context->render_offscreen)
2178         {
2179             wined3d_texture_load(rt->container, context, FALSE);
2180
2181             context_apply_fbo_state_blit(context, GL_FRAMEBUFFER, rt, NULL, rt->draw_binding);
2182             if (rt->resource.format->id != WINED3DFMT_NULL)
2183                 rt_mask = 1;
2184             else
2185                 rt_mask = 0;
2186         }
2187         else
2188         {
2189             context->current_fbo = NULL;
2190             context_bind_fbo(context, GL_FRAMEBUFFER, 0);
2191             rt_mask = context_generate_rt_mask_from_surface(rt);
2192         }
2193     }
2194     else
2195     {
2196         rt_mask = context_generate_rt_mask_no_fbo(device, rt);
2197     }
2198
2199     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2200
2201     if (rt_mask != *cur_mask)
2202     {
2203         context_apply_draw_buffers(context, rt_mask);
2204         *cur_mask = rt_mask;
2205     }
2206
2207     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2208     {
2209         context_check_fbo_status(context, GL_FRAMEBUFFER);
2210     }
2211
2212     SetupForBlit(device, context);
2213     context_invalidate_state(context, STATE_FRAMEBUFFER);
2214 }
2215
2216 static BOOL context_validate_rt_config(UINT rt_count,
2217         struct wined3d_surface * const *rts, const struct wined3d_surface *ds)
2218 {
2219     unsigned int i;
2220
2221     if (ds) return TRUE;
2222
2223     for (i = 0; i < rt_count; ++i)
2224     {
2225         if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL)
2226             return TRUE;
2227     }
2228
2229     WARN("Invalid render target config, need at least one attachment.\n");
2230     return FALSE;
2231 }
2232
2233 /* Context activation is done by the caller. */
2234 BOOL context_apply_clear_state(struct wined3d_context *context, const struct wined3d_device *device,
2235         UINT rt_count, const struct wined3d_fb_state *fb)
2236 {
2237     const struct wined3d_gl_info *gl_info = context->gl_info;
2238     DWORD rt_mask = 0, *cur_mask;
2239     UINT i;
2240     struct wined3d_surface **rts = fb->render_targets;
2241
2242     if (isStateDirty(context, STATE_FRAMEBUFFER) || fb != &device->fb
2243             || rt_count != context->gl_info->limits.buffers)
2244     {
2245         if (!context_validate_rt_config(rt_count, rts, fb->depth_stencil))
2246             return FALSE;
2247
2248         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2249         {
2250             context_validate_onscreen_formats(context, fb->depth_stencil);
2251
2252             if (!rt_count || surface_is_offscreen(rts[0]))
2253             {
2254                 for (i = 0; i < rt_count; ++i)
2255                 {
2256                     context->blit_targets[i] = rts[i];
2257                     if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL)
2258                         rt_mask |= (1 << i);
2259                 }
2260                 while (i < context->gl_info->limits.buffers)
2261                 {
2262                     context->blit_targets[i] = NULL;
2263                     ++i;
2264                 }
2265                 context_apply_fbo_state(context, GL_FRAMEBUFFER, context->blit_targets, fb->depth_stencil,
2266                         rt_count ? rts[0]->draw_binding : WINED3D_LOCATION_TEXTURE_RGB);
2267             }
2268             else
2269             {
2270                 context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL, WINED3D_LOCATION_DRAWABLE);
2271                 rt_mask = context_generate_rt_mask_from_surface(rts[0]);
2272             }
2273
2274             /* If the framebuffer is not the device's fb the device's fb has to be reapplied
2275              * next draw. Otherwise we could mark the framebuffer state clean here, once the
2276              * state management allows this */
2277             context_invalidate_state(context, STATE_FRAMEBUFFER);
2278         }
2279         else
2280         {
2281             rt_mask = context_generate_rt_mask_no_fbo(device, rt_count ? rts[0] : NULL);
2282         }
2283     }
2284     else if (wined3d_settings.offscreen_rendering_mode == ORM_FBO
2285             && (!rt_count || surface_is_offscreen(rts[0])))
2286     {
2287         for (i = 0; i < rt_count; ++i)
2288         {
2289             if (rts[i] && rts[i]->resource.format->id != WINED3DFMT_NULL) rt_mask |= (1 << i);
2290         }
2291     }
2292     else
2293     {
2294         rt_mask = context_generate_rt_mask_no_fbo(device, rt_count ? rts[0] : NULL);
2295     }
2296
2297     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2298
2299     if (rt_mask != *cur_mask)
2300     {
2301         context_apply_draw_buffers(context, rt_mask);
2302         *cur_mask = rt_mask;
2303         context_invalidate_state(context, STATE_FRAMEBUFFER);
2304     }
2305
2306     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2307     {
2308         context_check_fbo_status(context, GL_FRAMEBUFFER);
2309     }
2310
2311     if (context->last_was_blit)
2312         context->last_was_blit = FALSE;
2313
2314     /* Blending and clearing should be orthogonal, but tests on the nvidia
2315      * driver show that disabling blending when clearing improves the clearing
2316      * performance incredibly. */
2317     gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
2318     gl_info->gl_ops.gl.p_glEnable(GL_SCISSOR_TEST);
2319     checkGLcall("glEnable GL_SCISSOR_TEST");
2320
2321     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2322     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
2323     context_invalidate_state(context, STATE_SCISSORRECT);
2324
2325     return TRUE;
2326 }
2327
2328 static DWORD find_draw_buffers_mask(const struct wined3d_context *context, const struct wined3d_device *device)
2329 {
2330     const struct wined3d_state *state = &device->state;
2331     struct wined3d_surface **rts = state->fb->render_targets;
2332     struct wined3d_shader *ps = state->shader[WINED3D_SHADER_TYPE_PIXEL];
2333     DWORD rt_mask, rt_mask_bits;
2334     unsigned int i;
2335
2336     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) return context_generate_rt_mask_no_fbo(device, rts[0]);
2337     else if (!context->render_offscreen) return context_generate_rt_mask_from_surface(rts[0]);
2338
2339     rt_mask = ps ? ps->reg_maps.rt_mask : 1;
2340     rt_mask &= context->d3d_info->valid_rt_mask;
2341     rt_mask_bits = rt_mask;
2342     i = 0;
2343     while (rt_mask_bits)
2344     {
2345         rt_mask_bits &= ~(1 << i);
2346         if (!rts[i] || rts[i]->resource.format->id == WINED3DFMT_NULL)
2347             rt_mask &= ~(1 << i);
2348
2349         i++;
2350     }
2351
2352     return rt_mask;
2353 }
2354
2355 /* Context activation is done by the caller. */
2356 void context_state_fb(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2357 {
2358     const struct wined3d_device *device = context->swapchain->device;
2359     const struct wined3d_fb_state *fb = state->fb;
2360     DWORD rt_mask = find_draw_buffers_mask(context, device);
2361     DWORD *cur_mask;
2362
2363     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2364     {
2365         if (!context->render_offscreen)
2366         {
2367             context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL, WINED3D_LOCATION_DRAWABLE);
2368         }
2369         else
2370         {
2371             context_apply_fbo_state(context, GL_FRAMEBUFFER, fb->render_targets, fb->depth_stencil,
2372                     fb->render_targets[0]->draw_binding);
2373         }
2374     }
2375
2376     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2377     if (rt_mask != *cur_mask)
2378     {
2379         context_apply_draw_buffers(context, rt_mask);
2380         *cur_mask = rt_mask;
2381     }
2382 }
2383
2384 static void context_map_stage(struct wined3d_context *context, DWORD stage, DWORD unit)
2385 {
2386     DWORD i = context->rev_tex_unit_map[unit];
2387     DWORD j = context->tex_unit_map[stage];
2388
2389     context->tex_unit_map[stage] = unit;
2390     if (i != WINED3D_UNMAPPED_STAGE && i != stage)
2391         context->tex_unit_map[i] = WINED3D_UNMAPPED_STAGE;
2392
2393     context->rev_tex_unit_map[unit] = stage;
2394     if (j != WINED3D_UNMAPPED_STAGE && j != unit)
2395         context->rev_tex_unit_map[j] = WINED3D_UNMAPPED_STAGE;
2396 }
2397
2398 static void context_invalidate_texture_stage(struct wined3d_context *context, DWORD stage)
2399 {
2400     DWORD i;
2401
2402     for (i = 0; i <= WINED3D_HIGHEST_TEXTURE_STATE; ++i)
2403         context_invalidate_state(context, STATE_TEXTURESTAGE(stage, i));
2404 }
2405
2406 static void context_update_fixed_function_usage_map(struct wined3d_context *context,
2407         const struct wined3d_state *state)
2408 {
2409     UINT i, start, end;
2410
2411     context->fixed_function_usage_map = 0;
2412     for (i = 0; i < MAX_TEXTURES; ++i)
2413     {
2414         enum wined3d_texture_op color_op = state->texture_states[i][WINED3D_TSS_COLOR_OP];
2415         enum wined3d_texture_op alpha_op = state->texture_states[i][WINED3D_TSS_ALPHA_OP];
2416         DWORD color_arg1 = state->texture_states[i][WINED3D_TSS_COLOR_ARG1] & WINED3DTA_SELECTMASK;
2417         DWORD color_arg2 = state->texture_states[i][WINED3D_TSS_COLOR_ARG2] & WINED3DTA_SELECTMASK;
2418         DWORD color_arg3 = state->texture_states[i][WINED3D_TSS_COLOR_ARG0] & WINED3DTA_SELECTMASK;
2419         DWORD alpha_arg1 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG1] & WINED3DTA_SELECTMASK;
2420         DWORD alpha_arg2 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG2] & WINED3DTA_SELECTMASK;
2421         DWORD alpha_arg3 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG0] & WINED3DTA_SELECTMASK;
2422
2423         /* Not used, and disable higher stages. */
2424         if (color_op == WINED3D_TOP_DISABLE)
2425             break;
2426
2427         if (((color_arg1 == WINED3DTA_TEXTURE) && color_op != WINED3D_TOP_SELECT_ARG2)
2428                 || ((color_arg2 == WINED3DTA_TEXTURE) && color_op != WINED3D_TOP_SELECT_ARG1)
2429                 || ((color_arg3 == WINED3DTA_TEXTURE)
2430                     && (color_op == WINED3D_TOP_MULTIPLY_ADD || color_op == WINED3D_TOP_LERP))
2431                 || ((alpha_arg1 == WINED3DTA_TEXTURE) && alpha_op != WINED3D_TOP_SELECT_ARG2)
2432                 || ((alpha_arg2 == WINED3DTA_TEXTURE) && alpha_op != WINED3D_TOP_SELECT_ARG1)
2433                 || ((alpha_arg3 == WINED3DTA_TEXTURE)
2434                     && (alpha_op == WINED3D_TOP_MULTIPLY_ADD || alpha_op == WINED3D_TOP_LERP)))
2435             context->fixed_function_usage_map |= (1 << i);
2436
2437         if ((color_op == WINED3D_TOP_BUMPENVMAP || color_op == WINED3D_TOP_BUMPENVMAP_LUMINANCE)
2438                 && i < MAX_TEXTURES - 1)
2439             context->fixed_function_usage_map |= (1 << (i + 1));
2440     }
2441
2442     if (i < context->lowest_disabled_stage)
2443     {
2444         start = i;
2445         end = context->lowest_disabled_stage;
2446     }
2447     else
2448     {
2449         start = context->lowest_disabled_stage;
2450         end = i;
2451     }
2452
2453     context->lowest_disabled_stage = i;
2454     for (i = start + 1; i < end; ++i)
2455     {
2456         context_invalidate_state(context, STATE_TEXTURESTAGE(i, WINED3D_TSS_COLOR_OP));
2457     }
2458 }
2459
2460 static void context_map_fixed_function_samplers(struct wined3d_context *context,
2461         const struct wined3d_state *state)
2462 {
2463     unsigned int i, tex;
2464     WORD ffu_map;
2465     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2466
2467     context_update_fixed_function_usage_map(context, state);
2468     ffu_map = context->fixed_function_usage_map;
2469
2470     if (d3d_info->limits.ffp_textures == d3d_info->limits.ffp_blend_stages
2471             || context->lowest_disabled_stage <= d3d_info->limits.ffp_textures)
2472     {
2473         for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2474         {
2475             if (!(ffu_map & 1))
2476                 continue;
2477
2478             if (context->tex_unit_map[i] != i)
2479             {
2480                 context_map_stage(context, i, i);
2481                 context_invalidate_state(context, STATE_SAMPLER(i));
2482                 context_invalidate_texture_stage(context, i);
2483             }
2484         }
2485         return;
2486     }
2487
2488     /* Now work out the mapping */
2489     tex = 0;
2490     for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2491     {
2492         if (!(ffu_map & 1))
2493             continue;
2494
2495         if (context->tex_unit_map[i] != tex)
2496         {
2497             context_map_stage(context, i, tex);
2498             context_invalidate_state(context, STATE_SAMPLER(i));
2499             context_invalidate_texture_stage(context, i);
2500         }
2501
2502         ++tex;
2503     }
2504 }
2505
2506 static void context_map_psamplers(struct wined3d_context *context, const struct wined3d_state *state)
2507 {
2508     const enum wined3d_sampler_texture_type *sampler_type =
2509             state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.sampler_type;
2510     unsigned int i;
2511     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2512
2513     for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i)
2514     {
2515         if (sampler_type[i] && context->tex_unit_map[i] != i)
2516         {
2517             context_map_stage(context, i, i);
2518             context_invalidate_state(context, STATE_SAMPLER(i));
2519             if (i < d3d_info->limits.ffp_blend_stages)
2520                 context_invalidate_texture_stage(context, i);
2521         }
2522     }
2523 }
2524
2525 static BOOL context_unit_free_for_vs(const struct wined3d_context *context,
2526         const enum wined3d_sampler_texture_type *pshader_sampler_tokens,
2527         const enum wined3d_sampler_texture_type *vshader_sampler_tokens, DWORD unit)
2528 {
2529     DWORD current_mapping = context->rev_tex_unit_map[unit];
2530
2531     /* Not currently used */
2532     if (current_mapping == WINED3D_UNMAPPED_STAGE)
2533         return TRUE;
2534
2535     if (current_mapping < MAX_FRAGMENT_SAMPLERS)
2536     {
2537         /* Used by a fragment sampler */
2538
2539         if (!pshader_sampler_tokens)
2540         {
2541             /* No pixel shader, check fixed function */
2542             return current_mapping >= MAX_TEXTURES || !(context->fixed_function_usage_map & (1 << current_mapping));
2543         }
2544
2545         /* Pixel shader, check the shader's sampler map */
2546         return !pshader_sampler_tokens[current_mapping];
2547     }
2548
2549     /* Used by a vertex sampler */
2550     return !vshader_sampler_tokens[current_mapping - MAX_FRAGMENT_SAMPLERS];
2551 }
2552
2553 static void context_map_vsamplers(struct wined3d_context *context, BOOL ps, const struct wined3d_state *state)
2554 {
2555     const enum wined3d_sampler_texture_type *vshader_sampler_type =
2556             state->shader[WINED3D_SHADER_TYPE_VERTEX]->reg_maps.sampler_type;
2557     const enum wined3d_sampler_texture_type *pshader_sampler_type = NULL;
2558     const struct wined3d_gl_info *gl_info = context->gl_info;
2559     int start = min(MAX_COMBINED_SAMPLERS, gl_info->limits.combined_samplers) - 1;
2560     int i;
2561
2562     if (ps)
2563     {
2564         /* Note that we only care if a sampler is sampled or not, not the sampler's specific type.
2565          * Otherwise we'd need to call shader_update_samplers() here for 1.x pixelshaders. */
2566         pshader_sampler_type = state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.sampler_type;
2567     }
2568
2569     for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i) {
2570         DWORD vsampler_idx = i + MAX_FRAGMENT_SAMPLERS;
2571         if (vshader_sampler_type[i])
2572         {
2573             if (context->tex_unit_map[vsampler_idx] != WINED3D_UNMAPPED_STAGE)
2574             {
2575                 /* Already mapped somewhere */
2576                 continue;
2577             }
2578
2579             while (start >= 0)
2580             {
2581                 if (context_unit_free_for_vs(context, pshader_sampler_type, vshader_sampler_type, start))
2582                 {
2583                     context_map_stage(context, vsampler_idx, start);
2584                     context_invalidate_state(context, STATE_SAMPLER(vsampler_idx));
2585
2586                     --start;
2587                     break;
2588                 }
2589
2590                 --start;
2591             }
2592         }
2593     }
2594 }
2595
2596 static void context_update_tex_unit_map(struct wined3d_context *context, const struct wined3d_state *state)
2597 {
2598     BOOL vs = use_vs(state);
2599     BOOL ps = use_ps(state);
2600     /*
2601      * Rules are:
2602      * -> Pixel shaders need a 1:1 map. In theory the shader input could be mapped too, but
2603      * that would be really messy and require shader recompilation
2604      * -> When the mapping of a stage is changed, sampler and ALL texture stage states have
2605      * to be reset. Because of that try to work with a 1:1 mapping as much as possible
2606      */
2607     if (ps)
2608         context_map_psamplers(context, state);
2609     else
2610         context_map_fixed_function_samplers(context, state);
2611
2612     if (vs)
2613         context_map_vsamplers(context, ps, state);
2614 }
2615
2616 /* Context activation is done by the caller. */
2617 void context_state_drawbuf(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2618 {
2619     const struct wined3d_device *device = context->swapchain->device;
2620     DWORD rt_mask, *cur_mask;
2621
2622     if (isStateDirty(context, STATE_FRAMEBUFFER)) return;
2623
2624     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2625     rt_mask = find_draw_buffers_mask(context, device);
2626     if (rt_mask != *cur_mask)
2627     {
2628         context_apply_draw_buffers(context, rt_mask);
2629         *cur_mask = rt_mask;
2630     }
2631 }
2632
2633 static BOOL fixed_get_input(BYTE usage, BYTE usage_idx, unsigned int *regnum)
2634 {
2635     if ((usage == WINED3D_DECL_USAGE_POSITION || usage == WINED3D_DECL_USAGE_POSITIONT) && !usage_idx)
2636         *regnum = WINED3D_FFP_POSITION;
2637     else if (usage == WINED3D_DECL_USAGE_BLEND_WEIGHT && !usage_idx)
2638         *regnum = WINED3D_FFP_BLENDWEIGHT;
2639     else if (usage == WINED3D_DECL_USAGE_BLEND_INDICES && !usage_idx)
2640         *regnum = WINED3D_FFP_BLENDINDICES;
2641     else if (usage == WINED3D_DECL_USAGE_NORMAL && !usage_idx)
2642         *regnum = WINED3D_FFP_NORMAL;
2643     else if (usage == WINED3D_DECL_USAGE_PSIZE && !usage_idx)
2644         *regnum = WINED3D_FFP_PSIZE;
2645     else if (usage == WINED3D_DECL_USAGE_COLOR && !usage_idx)
2646         *regnum = WINED3D_FFP_DIFFUSE;
2647     else if (usage == WINED3D_DECL_USAGE_COLOR && usage_idx == 1)
2648         *regnum = WINED3D_FFP_SPECULAR;
2649     else if (usage == WINED3D_DECL_USAGE_TEXCOORD && usage_idx < WINED3DDP_MAXTEXCOORD)
2650         *regnum = WINED3D_FFP_TEXCOORD0 + usage_idx;
2651     else
2652     {
2653         FIXME("Unsupported input stream [usage=%s, usage_idx=%u].\n", debug_d3ddeclusage(usage), usage_idx);
2654         *regnum = ~0U;
2655         return FALSE;
2656     }
2657
2658     return TRUE;
2659 }
2660
2661 /* FIXME: Separate buffer loading from declaration decoding */
2662 /* Context activation is done by the caller. */
2663 void context_stream_info_from_declaration(struct wined3d_context *context,
2664         const struct wined3d_state *state, struct wined3d_stream_info *stream_info)
2665 {
2666     /* We need to deal with frequency data! */
2667     struct wined3d_vertex_declaration *declaration = state->vertex_declaration;
2668     BOOL use_vshader = use_vs(state);
2669     unsigned int i;
2670     WORD map;
2671
2672     stream_info->use_map = 0;
2673     stream_info->swizzle_map = 0;
2674     stream_info->all_vbo = 1;
2675     stream_info->position_transformed = declaration->position_transformed;
2676
2677     /* Translate the declaration into strided data. */
2678     for (i = 0; i < declaration->element_count; ++i)
2679     {
2680         const struct wined3d_vertex_declaration_element *element = &declaration->elements[i];
2681         const struct wined3d_stream_state *stream = &state->streams[element->input_slot];
2682         struct wined3d_buffer *buffer = stream->buffer;
2683         struct wined3d_bo_address data;
2684         BOOL stride_used;
2685         unsigned int idx;
2686         DWORD stride;
2687
2688         TRACE("%p Element %p (%u of %u).\n", declaration->elements,
2689                 element, i + 1, declaration->element_count);
2690
2691         if (!buffer) continue;
2692
2693         stride = stream->stride;
2694         TRACE("Stream %u in buffer %p.\n", element->input_slot, buffer);
2695         buffer_get_memory(buffer, context, &data);
2696
2697         /* Can't use vbo's if the base vertex index is negative. OpenGL doesn't accept negative offsets
2698          * (or rather offsets bigger than the vbo, because the pointer is unsigned), so use system memory
2699          * sources. In most sane cases the pointer - offset will still be > 0, otherwise it will wrap
2700          * around to some big value. Hope that with the indices, the driver wraps it back internally. If
2701          * not, drawStridedSlow is needed, including a vertex buffer path. */
2702         if (state->load_base_vertex_index < 0)
2703         {
2704             WARN_(d3d_perf)("load_base_vertex_index is < 0 (%d), not using VBOs.\n",
2705                     state->load_base_vertex_index);
2706             data.buffer_object = 0;
2707             data.addr = buffer_get_sysmem(buffer, context);
2708             if ((UINT_PTR)data.addr < -state->load_base_vertex_index * stride)
2709             {
2710                 FIXME("System memory vertex data load offset is negative!\n");
2711             }
2712         }
2713         data.addr += element->offset;
2714
2715         TRACE("offset %u input_slot %u usage_idx %d.\n", element->offset, element->input_slot, element->usage_idx);
2716
2717         if (use_vshader)
2718         {
2719             if (element->output_slot == ~0U)
2720             {
2721                 /* TODO: Assuming vertexdeclarations are usually used with the
2722                  * same or a similar shader, it might be worth it to store the
2723                  * last used output slot and try that one first. */
2724                 stride_used = vshader_get_input(state->shader[WINED3D_SHADER_TYPE_VERTEX],
2725                         element->usage, element->usage_idx, &idx);
2726             }
2727             else
2728             {
2729                 idx = element->output_slot;
2730                 stride_used = TRUE;
2731             }
2732         }
2733         else
2734         {
2735             if (!element->ffp_valid)
2736             {
2737                 WARN("Skipping unsupported fixed function element of format %s and usage %s.\n",
2738                         debug_d3dformat(element->format->id), debug_d3ddeclusage(element->usage));
2739                 stride_used = FALSE;
2740             }
2741             else
2742             {
2743                 stride_used = fixed_get_input(element->usage, element->usage_idx, &idx);
2744             }
2745         }
2746
2747         if (stride_used)
2748         {
2749             TRACE("Load %s array %u [usage %s, usage_idx %u, "
2750                     "input_slot %u, offset %u, stride %u, format %s, buffer_object %u].\n",
2751                     use_vshader ? "shader": "fixed function", idx,
2752                     debug_d3ddeclusage(element->usage), element->usage_idx, element->input_slot,
2753                     element->offset, stride, debug_d3dformat(element->format->id), data.buffer_object);
2754
2755             data.addr += stream->offset;
2756
2757             stream_info->elements[idx].format = element->format;
2758             stream_info->elements[idx].data = data;
2759             stream_info->elements[idx].stride = stride;
2760             stream_info->elements[idx].stream_idx = element->input_slot;
2761
2762             if (!context->gl_info->supported[ARB_VERTEX_ARRAY_BGRA]
2763                     && element->format->id == WINED3DFMT_B8G8R8A8_UNORM)
2764             {
2765                 stream_info->swizzle_map |= 1 << idx;
2766             }
2767             stream_info->use_map |= 1 << idx;
2768         }
2769     }
2770
2771     /* Preload the vertex buffers. */
2772     context->num_buffer_queries = 0;
2773     for (i = 0, map = stream_info->use_map; map; map >>= 1, ++i)
2774     {
2775         struct wined3d_stream_info_element *element;
2776         struct wined3d_buffer *buffer;
2777
2778         if (!(map & 1))
2779             continue;
2780
2781         element = &stream_info->elements[i];
2782         buffer = state->streams[element->stream_idx].buffer;
2783         buffer_internal_preload(buffer, context, state);
2784
2785         /* If the preload dropped the buffer object, update the stream info. */
2786         if (buffer->buffer_object != element->data.buffer_object)
2787         {
2788             element->data.buffer_object = 0;
2789             element->data.addr = buffer_get_sysmem(buffer, context)
2790                     + (ptrdiff_t)element->data.addr;
2791         }
2792
2793         if (!buffer->buffer_object)
2794             stream_info->all_vbo = 0;
2795
2796         if (buffer->query)
2797             context->buffer_queries[context->num_buffer_queries++] = buffer->query;
2798     }
2799 }
2800
2801 /* Context activation is done by the caller. */
2802 static void context_update_stream_info(struct wined3d_context *context, const struct wined3d_state *state)
2803 {
2804     const struct wined3d_gl_info *gl_info = context->gl_info;
2805     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2806     struct wined3d_stream_info *stream_info = &context->stream_info;
2807     DWORD prev_all_vbo = stream_info->all_vbo;
2808
2809     TRACE("============================= Vertex Declaration =============================\n");
2810     context_stream_info_from_declaration(context, state, stream_info);
2811
2812     if (use_vs(state))
2813     {
2814         if (state->vertex_declaration->half_float_conv_needed && !stream_info->all_vbo)
2815         {
2816             TRACE("Using drawStridedSlow with vertex shaders for FLOAT16 conversion.\n");
2817             context->use_immediate_mode_draw = TRUE;
2818         }
2819         else
2820         {
2821             context->use_immediate_mode_draw = FALSE;
2822         }
2823     }
2824     else
2825     {
2826         WORD slow_mask = (1 << WINED3D_FFP_PSIZE);
2827         slow_mask |= -!gl_info->supported[ARB_VERTEX_ARRAY_BGRA]
2828                 & ((1 << WINED3D_FFP_DIFFUSE) | (1 << WINED3D_FFP_SPECULAR));
2829
2830         if (((stream_info->position_transformed && !d3d_info->xyzrhw)
2831                 || (stream_info->use_map & slow_mask)) && !stream_info->all_vbo)
2832             context->use_immediate_mode_draw = TRUE;
2833         else
2834             context->use_immediate_mode_draw = FALSE;
2835     }
2836
2837     if (prev_all_vbo != stream_info->all_vbo)
2838         context_invalidate_state(context, STATE_INDEXBUFFER);
2839 }
2840
2841 /* Context activation is done by the caller. */
2842 static void context_preload_texture(struct wined3d_context *context,
2843         const struct wined3d_state *state, unsigned int idx)
2844 {
2845     struct wined3d_texture *texture;
2846
2847     if (!(texture = state->textures[idx]))
2848         return;
2849
2850     wined3d_texture_load(texture, context, state->sampler_states[idx][WINED3D_SAMP_SRGB_TEXTURE]);
2851 }
2852
2853 /* Context activation is done by the caller. */
2854 static void context_preload_textures(struct wined3d_context *context, const struct wined3d_state *state)
2855 {
2856     unsigned int i;
2857
2858     if (use_vs(state))
2859     {
2860         for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i)
2861         {
2862             if (state->shader[WINED3D_SHADER_TYPE_VERTEX]->reg_maps.sampler_type[i])
2863                 context_preload_texture(context, state, MAX_FRAGMENT_SAMPLERS + i);
2864         }
2865     }
2866
2867     if (use_ps(state))
2868     {
2869         for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i)
2870         {
2871             if (state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.sampler_type[i])
2872                 context_preload_texture(context, state, i);
2873         }
2874     }
2875     else
2876     {
2877         WORD ffu_map = context->fixed_function_usage_map;
2878
2879         for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2880         {
2881             if (ffu_map & 1)
2882                 context_preload_texture(context, state, i);
2883         }
2884     }
2885 }
2886
2887 /* Context activation is done by the caller. */
2888 BOOL context_apply_draw_state(struct wined3d_context *context, struct wined3d_device *device)
2889 {
2890     const struct wined3d_state *state = &device->state;
2891     const struct StateEntry *state_table = context->state_table;
2892     const struct wined3d_fb_state *fb = state->fb;
2893     unsigned int i;
2894
2895     if (!context_validate_rt_config(context->gl_info->limits.buffers,
2896             fb->render_targets, fb->depth_stencil))
2897         return FALSE;
2898
2899     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO && isStateDirty(context, STATE_FRAMEBUFFER))
2900     {
2901         context_validate_onscreen_formats(context, fb->depth_stencil);
2902     }
2903
2904     /* Preload resources before FBO setup. Texture preload in particular may
2905      * result in changes to the current FBO, due to using e.g. FBO blits for
2906      * updating a resource location. */
2907     context_update_tex_unit_map(context, state);
2908     context_preload_textures(context, state);
2909     if (isStateDirty(context, STATE_VDECL) || isStateDirty(context, STATE_STREAMSRC))
2910         context_update_stream_info(context, state);
2911     if (state->index_buffer)
2912     {
2913         if (context->stream_info.all_vbo)
2914             buffer_internal_preload(state->index_buffer, context, state);
2915         else
2916             buffer_get_sysmem(state->index_buffer, context);
2917     }
2918
2919     for (i = 0; i < context->numDirtyEntries; ++i)
2920     {
2921         DWORD rep = context->dirtyArray[i];
2922         DWORD idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
2923         BYTE shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
2924         context->isStateDirty[idx] &= ~(1 << shift);
2925         state_table[rep].apply(context, state, rep);
2926     }
2927
2928     if (context->shader_update_mask)
2929     {
2930         device->shader_backend->shader_select(device->shader_priv, context, state);
2931         context->shader_update_mask = 0;
2932     }
2933
2934     if (context->constant_update_mask)
2935     {
2936         device->shader_backend->shader_load_constants(device->shader_priv, context, state);
2937         context->constant_update_mask = 0;
2938     }
2939
2940     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2941     {
2942         context_check_fbo_status(context, GL_FRAMEBUFFER);
2943     }
2944
2945     context->numDirtyEntries = 0; /* This makes the whole list clean */
2946     context->last_was_blit = FALSE;
2947
2948     return TRUE;
2949 }
2950
2951 static void context_setup_target(struct wined3d_context *context, struct wined3d_surface *target)
2952 {
2953     BOOL old_render_offscreen = context->render_offscreen, render_offscreen;
2954
2955     render_offscreen = surface_is_offscreen(target);
2956     if (context->current_rt == target && render_offscreen == old_render_offscreen) return;
2957
2958     /* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
2959      * the alpha blend state changes with different render target formats. */
2960     if (!context->current_rt)
2961     {
2962         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2963     }
2964     else
2965     {
2966         const struct wined3d_format *old = context->current_rt->resource.format;
2967         const struct wined3d_format *new = target->resource.format;
2968
2969         if (old->id != new->id)
2970         {
2971             /* Disable blending when the alpha mask has changed and when a format doesn't support blending. */
2972             if ((old->alpha_size && !new->alpha_size) || (!old->alpha_size && new->alpha_size)
2973                     || !(new->flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
2974                 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2975
2976             /* Update sRGB writing when switching between formats that do/do not support sRGB writing */
2977             if ((old->flags & WINED3DFMT_FLAG_SRGB_WRITE) != (new->flags & WINED3DFMT_FLAG_SRGB_WRITE))
2978                 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SRGBWRITEENABLE));
2979         }
2980
2981         /* When switching away from an offscreen render target, and we're not
2982          * using FBOs, we have to read the drawable into the texture. This is
2983          * done via PreLoad (and WINED3D_LOCATION_DRAWABLE set on the surface).
2984          * There are some things that need care though. PreLoad needs a GL context,
2985          * and FindContext is called before the context is activated. It also
2986          * has to be called with the old rendertarget active, otherwise a
2987          * wrong drawable is read. */
2988         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
2989                 && old_render_offscreen && context->current_rt != target)
2990         {
2991             struct wined3d_texture *texture = context->current_rt->container;
2992
2993             /* Read the back buffer of the old drawable into the destination texture. */
2994             if (texture->texture_srgb.name)
2995                 wined3d_texture_load(texture, context, TRUE);
2996             wined3d_texture_load(texture, context, FALSE);
2997             surface_invalidate_location(context->current_rt, WINED3D_LOCATION_DRAWABLE);
2998         }
2999     }
3000
3001     context->current_rt = target;
3002     context_set_render_offscreen(context, render_offscreen);
3003 }
3004
3005 struct wined3d_context *context_acquire(const struct wined3d_device *device, struct wined3d_surface *target)
3006 {
3007     struct wined3d_context *current_context = context_get_current();
3008     struct wined3d_context *context;
3009
3010     TRACE("device %p, target %p.\n", device, target);
3011
3012     if (current_context && current_context->destroyed)
3013         current_context = NULL;
3014
3015     if (!target)
3016     {
3017         if (current_context
3018                 && current_context->current_rt
3019                 && current_context->swapchain->device == device)
3020         {
3021             target = current_context->current_rt;
3022         }
3023         else
3024         {
3025             struct wined3d_swapchain *swapchain = device->swapchains[0];
3026             if (swapchain->back_buffers)
3027                 target = swapchain->back_buffers[0];
3028             else
3029                 target = swapchain->front_buffer;
3030         }
3031     }
3032
3033     if (current_context && current_context->current_rt == target)
3034     {
3035         context = current_context;
3036     }
3037     else if (target->swapchain)
3038     {
3039         TRACE("Rendering onscreen.\n");
3040
3041         context = swapchain_get_context(target->swapchain);
3042     }
3043     else
3044     {
3045         TRACE("Rendering offscreen.\n");
3046
3047         /* Stay with the current context if possible. Otherwise use the
3048          * context for the primary swapchain. */
3049         if (current_context && current_context->swapchain->device == device)
3050             context = current_context;
3051         else
3052             context = swapchain_get_context(device->swapchains[0]);
3053     }
3054
3055     context_enter(context);
3056     context_update_window(context);
3057     context_setup_target(context, target);
3058     if (!context->valid) return context;
3059
3060     if (context != current_context)
3061     {
3062         if (!context_set_current(context))
3063             ERR("Failed to activate the new context.\n");
3064     }
3065     else if (context->needs_set)
3066     {
3067         context_set_gl_context(context);
3068     }
3069
3070     return context;
3071 }