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

   1 /*
   2  * Context and render target management in wined3d
   3  *
   4  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
   5  * Copyright 2009 Henri Verbeet for CodeWeavers
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include <stdio.h>
  24 #ifdef HAVE_FLOAT_H
  25 # include <float.h>
  26 #endif
  27 #include "wined3d_private.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  30
  31 #define GLINFO_LOCATION (*gl_info)
  32
  33 static DWORD wined3d_context_tls_idx;
  34
  35 /* FBO helper functions */
  36
  37 /* GL locking is done by the caller */
  38 void context_bind_fbo(struct wined3d_context *context, GLenum target, GLuint *fbo)
  39 {
  40     const struct wined3d_gl_info *gl_info = context->gl_info;
  41     GLuint f;
  42
  43     if (!fbo)
  44     {
  45         f = 0;
  46     }
  47     else
  48     {
  49         if (!*fbo)
  50         {
  51             GL_EXTCALL(glGenFramebuffersEXT(1, fbo));
  52             checkGLcall("glGenFramebuffersEXT()");
  53             TRACE("Created FBO %u.\n", *fbo);
  54         }
  55         f = *fbo;
  56     }
  57
  58     switch (target)
  59     {
  60         case GL_READ_FRAMEBUFFER_EXT:
  61             if (context->fbo_read_binding == f) return;
  62             context->fbo_read_binding = f;
  63             break;
  64
  65         case GL_DRAW_FRAMEBUFFER_EXT:
  66             if (context->fbo_draw_binding == f) return;
  67             context->fbo_draw_binding = f;
  68             break;
  69
  70         case GL_FRAMEBUFFER_EXT:
  71             if (context->fbo_read_binding == f
  72                     && context->fbo_draw_binding == f) return;
  73             context->fbo_read_binding = f;
  74             context->fbo_draw_binding = f;
  75             break;
  76
  77         default:
  78             FIXME("Unhandled target %#x.\n", target);
  79             break;
  80     }
  81
  82     GL_EXTCALL(glBindFramebufferEXT(target, f));
  83     checkGLcall("glBindFramebuffer()");
  84 }
  85
  86 /* GL locking is done by the caller */
  87 static void context_clean_fbo_attachments(const struct wined3d_gl_info *gl_info)
  88 {
  89     unsigned int i;
  90
  91     for (i = 0; i < GL_LIMITS(buffers); ++i)
  92     {
  93         GL_EXTCALL(glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT + i, GL_TEXTURE_2D, 0, 0));
  94         checkGLcall("glFramebufferTexture2D()");
  95     }
  96     GL_EXTCALL(glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
  97     checkGLcall("glFramebufferTexture2D()");
  98
  99     GL_EXTCALL(glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
 100     checkGLcall("glFramebufferTexture2D()");
 101 }
 102
 103 /* GL locking is done by the caller */
 104 static void context_destroy_fbo(struct wined3d_context *context, GLuint *fbo)
 105 {
 106     const struct wined3d_gl_info *gl_info = context->gl_info;
 107
 108     context_bind_fbo(context, GL_FRAMEBUFFER_EXT, fbo);
 109     context_clean_fbo_attachments(gl_info);
 110     context_bind_fbo(context, GL_FRAMEBUFFER_EXT, NULL);
 111
 112     GL_EXTCALL(glDeleteFramebuffersEXT(1, fbo));
 113     checkGLcall("glDeleteFramebuffers()");
 114 }
 115
 116 /* GL locking is done by the caller */
 117 static void context_apply_attachment_filter_states(IWineD3DSurface *surface, BOOL force_preload)
 118 {
 119     const IWineD3DSurfaceImpl *surface_impl = (IWineD3DSurfaceImpl *)surface;
 120     IWineD3DDeviceImpl *device = surface_impl->resource.wineD3DDevice;
 121     IWineD3DBaseTextureImpl *texture_impl;
 122     BOOL update_minfilter = FALSE;
 123     BOOL update_magfilter = FALSE;
 124
 125     /* Update base texture states array */
 126     if (SUCCEEDED(IWineD3DSurface_GetContainer(surface, &IID_IWineD3DBaseTexture, (void **)&texture_impl)))
 127     {
 128         if (texture_impl->baseTexture.states[WINED3DTEXSTA_MINFILTER] != WINED3DTEXF_POINT
 129             || texture_impl->baseTexture.states[WINED3DTEXSTA_MIPFILTER] != WINED3DTEXF_NONE)
 130         {
 131             texture_impl->baseTexture.states[WINED3DTEXSTA_MINFILTER] = WINED3DTEXF_POINT;
 132             texture_impl->baseTexture.states[WINED3DTEXSTA_MIPFILTER] = WINED3DTEXF_NONE;
 133             update_minfilter = TRUE;
 134         }
 135
 136         if (texture_impl->baseTexture.states[WINED3DTEXSTA_MAGFILTER] != WINED3DTEXF_POINT)
 137         {
 138             texture_impl->baseTexture.states[WINED3DTEXSTA_MAGFILTER] = WINED3DTEXF_POINT;
 139             update_magfilter = TRUE;
 140         }
 141
 142         if (texture_impl->baseTexture.bindCount)
 143         {
 144             WARN("Render targets should not be bound to a sampler\n");
 145             IWineD3DDeviceImpl_MarkStateDirty(device, STATE_SAMPLER(texture_impl->baseTexture.sampler));
 146         }
 147
 148         IWineD3DBaseTexture_Release((IWineD3DBaseTexture *)texture_impl);
 149     }
 150
 151     if (update_minfilter || update_magfilter || force_preload)
 152     {
 153         GLenum target, bind_target;
 154         GLint old_binding;
 155
 156         target = surface_impl->texture_target;
 157         if (target == GL_TEXTURE_2D)
 158         {
 159             bind_target = GL_TEXTURE_2D;
 160             glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
 161         } else if (target == GL_TEXTURE_RECTANGLE_ARB) {
 162             bind_target = GL_TEXTURE_RECTANGLE_ARB;
 163             glGetIntegerv(GL_TEXTURE_BINDING_RECTANGLE_ARB, &old_binding);
 164         } else {
 165             bind_target = GL_TEXTURE_CUBE_MAP_ARB;
 166             glGetIntegerv(GL_TEXTURE_BINDING_CUBE_MAP_ARB, &old_binding);
 167         }
 168
 169         surface_internal_preload(surface, SRGB_RGB);
 170
 171         glBindTexture(bind_target, surface_impl->texture_name);
 172         if (update_minfilter) glTexParameteri(bind_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 173         if (update_magfilter) glTexParameteri(bind_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 174         glBindTexture(bind_target, old_binding);
 175     }
 176
 177     checkGLcall("apply_attachment_filter_states()");
 178 }
 179
 180 /* GL locking is done by the caller */
 181 void context_attach_depth_stencil_fbo(struct wined3d_context *context,
 182         GLenum fbo_target, IWineD3DSurface *depth_stencil, BOOL use_render_buffer)
 183 {
 184     IWineD3DSurfaceImpl *depth_stencil_impl = (IWineD3DSurfaceImpl *)depth_stencil;
 185     const struct wined3d_gl_info *gl_info = context->gl_info;
 186
 187     TRACE("Attach depth stencil %p\n", depth_stencil);
 188
 189     if (depth_stencil)
 190     {
 191         DWORD format_flags = depth_stencil_impl->resource.format_desc->Flags;
 192
 193         if (use_render_buffer && depth_stencil_impl->current_renderbuffer)
 194         {
 195             if (format_flags & WINED3DFMT_FLAG_DEPTH)
 196             {
 197                 GL_EXTCALL(glFramebufferRenderbufferEXT(fbo_target, GL_DEPTH_ATTACHMENT_EXT,
 198                         GL_RENDERBUFFER_EXT, depth_stencil_impl->current_renderbuffer->id));
 199                 checkGLcall("glFramebufferRenderbufferEXT()");
 200             }
 201
 202             if (format_flags & WINED3DFMT_FLAG_STENCIL)
 203             {
 204                 GL_EXTCALL(glFramebufferRenderbufferEXT(fbo_target, GL_STENCIL_ATTACHMENT_EXT,
 205                         GL_RENDERBUFFER_EXT, depth_stencil_impl->current_renderbuffer->id));
 206                 checkGLcall("glFramebufferRenderbufferEXT()");
 207             }
 208         }
 209         else
 210         {
 211             context_apply_attachment_filter_states(depth_stencil, TRUE);
 212
 213             if (format_flags & WINED3DFMT_FLAG_DEPTH)
 214             {
 215                 GL_EXTCALL(glFramebufferTexture2DEXT(fbo_target, GL_DEPTH_ATTACHMENT_EXT,
 216                         depth_stencil_impl->texture_target, depth_stencil_impl->texture_name,
 217                         depth_stencil_impl->texture_level));
 218                 checkGLcall("glFramebufferTexture2DEXT()");
 219             }
 220
 221             if (format_flags & WINED3DFMT_FLAG_STENCIL)
 222             {
 223                 GL_EXTCALL(glFramebufferTexture2DEXT(fbo_target, GL_STENCIL_ATTACHMENT_EXT,
 224                         depth_stencil_impl->texture_target, depth_stencil_impl->texture_name,
 225                         depth_stencil_impl->texture_level));
 226                 checkGLcall("glFramebufferTexture2DEXT()");
 227             }
 228         }
 229
 230         if (!(format_flags & WINED3DFMT_FLAG_DEPTH))
 231         {
 232             GL_EXTCALL(glFramebufferTexture2DEXT(fbo_target, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
 233             checkGLcall("glFramebufferTexture2DEXT()");
 234         }
 235
 236         if (!(format_flags & WINED3DFMT_FLAG_STENCIL))
 237         {
 238             GL_EXTCALL(glFramebufferTexture2DEXT(fbo_target, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
 239             checkGLcall("glFramebufferTexture2DEXT()");
 240         }
 241     }
 242     else
 243     {
 244         GL_EXTCALL(glFramebufferTexture2DEXT(fbo_target, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
 245         checkGLcall("glFramebufferTexture2DEXT()");
 246
 247         GL_EXTCALL(glFramebufferTexture2DEXT(fbo_target, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
 248         checkGLcall("glFramebufferTexture2DEXT()");
 249     }
 250 }
 251
 252 /* GL locking is done by the caller */
 253 void context_attach_surface_fbo(const struct wined3d_context *context,
 254         GLenum fbo_target, DWORD idx, IWineD3DSurface *surface)
 255 {
 256     const IWineD3DSurfaceImpl *surface_impl = (IWineD3DSurfaceImpl *)surface;
 257     const struct wined3d_gl_info *gl_info = context->gl_info;
 258
 259     TRACE("Attach surface %p to %u\n", surface, idx);
 260
 261     if (surface)
 262     {
 263         context_apply_attachment_filter_states(surface, TRUE);
 264
 265         GL_EXTCALL(glFramebufferTexture2DEXT(fbo_target, GL_COLOR_ATTACHMENT0_EXT + idx, surface_impl->texture_target,
 266                 surface_impl->texture_name, surface_impl->texture_level));
 267         checkGLcall("glFramebufferTexture2DEXT()");
 268     } else {
 269         GL_EXTCALL(glFramebufferTexture2DEXT(fbo_target, GL_COLOR_ATTACHMENT0_EXT + idx, GL_TEXTURE_2D, 0, 0));
 270         checkGLcall("glFramebufferTexture2DEXT()");
 271     }
 272 }
 273
 274 /* GL locking is done by the caller */
 275 static void context_check_fbo_status(struct wined3d_context *context)
 276 {
 277     const struct wined3d_gl_info *gl_info = context->gl_info;
 278     GLenum status;
 279
 280     status = GL_EXTCALL(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
 281     if (status == GL_FRAMEBUFFER_COMPLETE_EXT)
 282     {
 283         TRACE("FBO complete\n");
 284     } else {
 285         IWineD3DSurfaceImpl *attachment;
 286         unsigned int i;
 287         FIXME("FBO status %s (%#x)\n", debug_fbostatus(status), status);
 288
 289         /* Dump the FBO attachments */
 290         for (i = 0; i < GL_LIMITS(buffers); ++i)
 291         {
 292             attachment = (IWineD3DSurfaceImpl *)context->current_fbo->render_targets[i];
 293             if (attachment)
 294             {
 295                 FIXME("\tColor attachment %d: (%p) %s %ux%u\n",
 296                         i, attachment, debug_d3dformat(attachment->resource.format_desc->format),
 297                         attachment->pow2Width, attachment->pow2Height);
 298             }
 299         }
 300         attachment = (IWineD3DSurfaceImpl *)context->current_fbo->depth_stencil;
 301         if (attachment)
 302         {
 303             FIXME("\tDepth attachment: (%p) %s %ux%u\n",
 304                     attachment, debug_d3dformat(attachment->resource.format_desc->format),
 305                     attachment->pow2Width, attachment->pow2Height);
 306         }
 307     }
 308 }
 309
 310 static struct fbo_entry *context_create_fbo_entry(struct wined3d_context *context)
 311 {
 312     IWineD3DDeviceImpl *device = ((IWineD3DSurfaceImpl *)context->surface)->resource.wineD3DDevice;
 313     const struct wined3d_gl_info *gl_info = context->gl_info;
 314     struct fbo_entry *entry;
 315
 316     entry = HeapAlloc(GetProcessHeap(), 0, sizeof(*entry));
 317     entry->render_targets = HeapAlloc(GetProcessHeap(), 0, GL_LIMITS(buffers) * sizeof(*entry->render_targets));
 318     memcpy(entry->render_targets, device->render_targets, GL_LIMITS(buffers) * sizeof(*entry->render_targets));
 319     entry->depth_stencil = device->stencilBufferTarget;
 320     entry->attached = FALSE;
 321     entry->id = 0;
 322
 323     return entry;
 324 }
 325
 326 /* GL locking is done by the caller */
 327 static void context_reuse_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
 328 {
 329     IWineD3DDeviceImpl *device = ((IWineD3DSurfaceImpl *)context->surface)->resource.wineD3DDevice;
 330     const struct wined3d_gl_info *gl_info = context->gl_info;
 331
 332     context_bind_fbo(context, GL_FRAMEBUFFER_EXT, &entry->id);
 333     context_clean_fbo_attachments(gl_info);
 334
 335     memcpy(entry->render_targets, device->render_targets, GL_LIMITS(buffers) * sizeof(*entry->render_targets));
 336     entry->depth_stencil = device->stencilBufferTarget;
 337     entry->attached = FALSE;
 338 }
 339
 340 /* GL locking is done by the caller */
 341 static void context_destroy_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
 342 {
 343     if (entry->id)
 344     {
 345         TRACE("Destroy FBO %d\n", entry->id);
 346         context_destroy_fbo(context, &entry->id);
 347     }
 348     --context->fbo_entry_count;
 349     list_remove(&entry->entry);
 350     HeapFree(GetProcessHeap(), 0, entry->render_targets);
 351     HeapFree(GetProcessHeap(), 0, entry);
 352 }
 353
 354
 355 /* GL locking is done by the caller */
 356 static struct fbo_entry *context_find_fbo_entry(struct wined3d_context *context)
 357 {
 358     IWineD3DDeviceImpl *device = ((IWineD3DSurfaceImpl *)context->surface)->resource.wineD3DDevice;
 359     const struct wined3d_gl_info *gl_info = context->gl_info;
 360     struct fbo_entry *entry;
 361
 362     LIST_FOR_EACH_ENTRY(entry, &context->fbo_list, struct fbo_entry, entry)
 363     {
 364         if (!memcmp(entry->render_targets, device->render_targets, GL_LIMITS(buffers) * sizeof(*entry->render_targets))
 365                 && entry->depth_stencil == device->stencilBufferTarget)
 366         {
 367             list_remove(&entry->entry);
 368             list_add_head(&context->fbo_list, &entry->entry);
 369             return entry;
 370         }
 371     }
 372
 373     if (context->fbo_entry_count < WINED3D_MAX_FBO_ENTRIES)
 374     {
 375         entry = context_create_fbo_entry(context);
 376         list_add_head(&context->fbo_list, &entry->entry);
 377         ++context->fbo_entry_count;
 378     }
 379     else
 380     {
 381         entry = LIST_ENTRY(list_tail(&context->fbo_list), struct fbo_entry, entry);
 382         context_reuse_fbo_entry(context, entry);
 383         list_remove(&entry->entry);
 384         list_add_head(&context->fbo_list, &entry->entry);
 385     }
 386
 387     return entry;
 388 }
 389
 390 /* GL locking is done by the caller */
 391 static void context_apply_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
 392 {
 393     IWineD3DDeviceImpl *device = ((IWineD3DSurfaceImpl *)context->surface)->resource.wineD3DDevice;
 394     const struct wined3d_gl_info *gl_info = context->gl_info;
 395     unsigned int i;
 396
 397     context_bind_fbo(context, GL_FRAMEBUFFER_EXT, &entry->id);
 398
 399     if (!entry->attached)
 400     {
 401         /* Apply render targets */
 402         for (i = 0; i < GL_LIMITS(buffers); ++i)
 403         {
 404             IWineD3DSurface *render_target = device->render_targets[i];
 405             context_attach_surface_fbo(context, GL_FRAMEBUFFER_EXT, i, render_target);
 406         }
 407
 408         /* Apply depth targets */
 409         if (device->stencilBufferTarget)
 410         {
 411             unsigned int w = ((IWineD3DSurfaceImpl *)device->render_targets[0])->pow2Width;
 412             unsigned int h = ((IWineD3DSurfaceImpl *)device->render_targets[0])->pow2Height;
 413
 414             surface_set_compatible_renderbuffer(device->stencilBufferTarget, w, h);
 415         }
 416         context_attach_depth_stencil_fbo(context, GL_FRAMEBUFFER_EXT, device->stencilBufferTarget, TRUE);
 417
 418         entry->attached = TRUE;
 419     } else {
 420         for (i = 0; i < GL_LIMITS(buffers); ++i)
 421         {
 422             if (device->render_targets[i])
 423                 context_apply_attachment_filter_states(device->render_targets[i], FALSE);
 424         }
 425         if (device->stencilBufferTarget)
 426             context_apply_attachment_filter_states(device->stencilBufferTarget, FALSE);
 427     }
 428
 429     for (i = 0; i < GL_LIMITS(buffers); ++i)
 430     {
 431         if (device->render_targets[i])
 432             device->draw_buffers[i] = GL_COLOR_ATTACHMENT0_EXT + i;
 433         else
 434             device->draw_buffers[i] = GL_NONE;
 435     }
 436 }
 437
 438 /* GL locking is done by the caller */
 439 static void context_apply_fbo_state(struct wined3d_context *context)
 440 {
 441     if (context->render_offscreen)
 442     {
 443         context->current_fbo = context_find_fbo_entry(context);
 444         context_apply_fbo_entry(context, context->current_fbo);
 445     } else {
 446         context->current_fbo = NULL;
 447         context_bind_fbo(context, GL_FRAMEBUFFER_EXT, NULL);
 448     }
 449
 450     context_check_fbo_status(context);
 451 }
 452
 453 /* Context activation is done by the caller. */
 454 void context_alloc_occlusion_query(struct wined3d_context *context, struct wined3d_occlusion_query *query)
 455 {
 456     const struct wined3d_gl_info *gl_info = context->gl_info;
 457
 458     if (context->free_occlusion_query_count)
 459     {
 460         query->id = context->free_occlusion_queries[--context->free_occlusion_query_count];
 461     }
 462     else
 463     {
 464         if (GL_SUPPORT(ARB_OCCLUSION_QUERY))
 465         {
 466             ENTER_GL();
 467             GL_EXTCALL(glGenQueriesARB(1, &query->id));
 468             checkGLcall("glGenQueriesARB");
 469             LEAVE_GL();
 470
 471             TRACE("Allocated occlusion query %u in context %p.\n", query->id, context);
 472         }
 473         else
 474         {
 475             WARN("Occlusion queries not supported, not allocating query id.\n");
 476             query->id = 0;
 477         }
 478     }
 479
 480     query->context = context;
 481     list_add_head(&context->occlusion_queries, &query->entry);
 482 }
 483
 484 void context_free_occlusion_query(struct wined3d_occlusion_query *query)
 485 {
 486     struct wined3d_context *context = query->context;
 487
 488     list_remove(&query->entry);
 489     query->context = NULL;
 490
 491     if (context->free_occlusion_query_count >= context->free_occlusion_query_size - 1)
 492     {
 493         UINT new_size = context->free_occlusion_query_size << 1;
 494         GLuint *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_occlusion_queries,
 495                 new_size * sizeof(*context->free_occlusion_queries));
 496
 497         if (!new_data)
 498         {
 499             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->id, context);
 500             return;
 501         }
 502
 503         context->free_occlusion_query_size = new_size;
 504         context->free_occlusion_queries = new_data;
 505     }
 506
 507     context->free_occlusion_queries[context->free_occlusion_query_count++] = query->id;
 508 }
 509
 510 /* Context activation is done by the caller. */
 511 void context_alloc_event_query(struct wined3d_context *context, struct wined3d_event_query *query)
 512 {
 513     const struct wined3d_gl_info *gl_info = context->gl_info;
 514
 515     if (context->free_event_query_count)
 516     {
 517         query->id = context->free_event_queries[--context->free_event_query_count];
 518     }
 519     else
 520     {
 521         if (GL_SUPPORT(APPLE_FENCE))
 522         {
 523             ENTER_GL();
 524             GL_EXTCALL(glGenFencesAPPLE(1, &query->id));
 525             checkGLcall("glGenFencesAPPLE");
 526             LEAVE_GL();
 527
 528             TRACE("Allocated event query %u in context %p.\n", query->id, context);
 529         }
 530         else if(GL_SUPPORT(NV_FENCE))
 531         {
 532             ENTER_GL();
 533             GL_EXTCALL(glGenFencesNV(1, &query->id));
 534             checkGLcall("glGenFencesNV");
 535             LEAVE_GL();
 536
 537             TRACE("Allocated event query %u in context %p.\n", query->id, context);
 538         }
 539         else
 540         {
 541             WARN("Event queries not supported, not allocating query id.\n");
 542             query->id = 0;
 543         }
 544     }
 545
 546     query->context = context;
 547     list_add_head(&context->event_queries, &query->entry);
 548 }
 549
 550 void context_free_event_query(struct wined3d_event_query *query)
 551 {
 552     struct wined3d_context *context = query->context;
 553
 554     list_remove(&query->entry);
 555     query->context = NULL;
 556
 557     if (context->free_event_query_count >= context->free_event_query_size - 1)
 558     {
 559         UINT new_size = context->free_event_query_size << 1;
 560         GLuint *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_event_queries,
 561                 new_size * sizeof(*context->free_event_queries));
 562
 563         if (!new_data)
 564         {
 565             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->id, context);
 566             return;
 567         }
 568
 569         context->free_event_query_size = new_size;
 570         context->free_event_queries = new_data;
 571     }
 572
 573     context->free_event_queries[context->free_event_query_count++] = query->id;
 574 }
 575
 576 void context_resource_released(IWineD3DDevice *iface, IWineD3DResource *resource, WINED3DRESOURCETYPE type)
 577 {
 578     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 579     UINT i;
 580
 581     if (!This->d3d_initialized) return;
 582
 583     switch(type)
 584     {
 585         case WINED3DRTYPE_SURFACE:
 586         {
 587             ActivateContext(This, NULL, CTXUSAGE_RESOURCELOAD);
 588
 589             for (i = 0; i < This->numContexts; ++i)
 590             {
 591                 struct wined3d_context *context = This->contexts[i];
 592                 const struct wined3d_gl_info *gl_info = context->gl_info;
 593                 struct fbo_entry *entry, *entry2;
 594
 595                 if (context->current_rt == (IWineD3DSurface *)resource) context->current_rt = NULL;
 596
 597                 ENTER_GL();
 598
 599                 LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
 600                 {
 601                     BOOL destroyed = FALSE;
 602                     UINT j;
 603
 604                     for (j = 0; !destroyed && j < GL_LIMITS(buffers); ++j)
 605                     {
 606                         if (entry->render_targets[j] == (IWineD3DSurface *)resource)
 607                         {
 608                             context_destroy_fbo_entry(context, entry);
 609                             destroyed = TRUE;
 610                         }
 611                     }
 612
 613                     if (!destroyed && entry->depth_stencil == (IWineD3DSurface *)resource)
 614                         context_destroy_fbo_entry(context, entry);
 615                 }
 616
 617                 LEAVE_GL();
 618             }
 619
 620             break;
 621         }
 622
 623         default:
 624             break;
 625     }
 626 }
 627
 628 static void context_destroy_gl_resources(struct wined3d_context *context)
 629 {
 630     const struct wined3d_gl_info *gl_info = context->gl_info;
 631     struct wined3d_occlusion_query *occlusion_query;
 632     struct wined3d_event_query *event_query;
 633     struct fbo_entry *entry, *entry2;
 634     BOOL has_glctx;
 635
 636     has_glctx = pwglMakeCurrent(context->hdc, context->glCtx);
 637     if (!has_glctx) WARN("Failed to activate context. Window already destroyed?\n");
 638
 639     ENTER_GL();
 640
 641     LIST_FOR_EACH_ENTRY(occlusion_query, &context->occlusion_queries, struct wined3d_occlusion_query, entry)
 642     {
 643         if (has_glctx && GL_SUPPORT(ARB_OCCLUSION_QUERY)) GL_EXTCALL(glDeleteQueriesARB(1, &occlusion_query->id));
 644         occlusion_query->context = NULL;
 645     }
 646
 647     LIST_FOR_EACH_ENTRY(event_query, &context->event_queries, struct wined3d_event_query, entry)
 648     {
 649         if (has_glctx)
 650         {
 651             if (GL_SUPPORT(APPLE_FENCE)) GL_EXTCALL(glDeleteFencesAPPLE(1, &event_query->id));
 652             else if (GL_SUPPORT(NV_FENCE)) GL_EXTCALL(glDeleteFencesNV(1, &event_query->id));
 653         }
 654         event_query->context = NULL;
 655     }
 656
 657     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry) {
 658         if (!has_glctx) entry->id = 0;
 659         context_destroy_fbo_entry(context, entry);
 660     }
 661     if (has_glctx)
 662     {
 663         if (context->src_fbo)
 664         {
 665             TRACE("Destroy src FBO %d\n", context->src_fbo);
 666             context_destroy_fbo(context, &context->src_fbo);
 667         }
 668         if (context->dst_fbo)
 669         {
 670             TRACE("Destroy dst FBO %d\n", context->dst_fbo);
 671             context_destroy_fbo(context, &context->dst_fbo);
 672         }
 673         if (context->dummy_arbfp_prog)
 674         {
 675             GL_EXTCALL(glDeleteProgramsARB(1, &context->dummy_arbfp_prog));
 676         }
 677
 678         GL_EXTCALL(glDeleteQueriesARB(context->free_occlusion_query_count, context->free_occlusion_queries));
 679
 680         if (GL_SUPPORT(APPLE_FENCE))
 681             GL_EXTCALL(glDeleteFencesAPPLE(context->free_event_query_count, context->free_event_queries));
 682         else if (GL_SUPPORT(NV_FENCE))
 683             GL_EXTCALL(glDeleteFencesNV(context->free_event_query_count, context->free_event_queries));
 684
 685         checkGLcall("context cleanup");
 686     }
 687
 688     LEAVE_GL();
 689
 690     HeapFree(GetProcessHeap(), 0, context->free_occlusion_queries);
 691     HeapFree(GetProcessHeap(), 0, context->free_event_queries);
 692
 693     if (!pwglMakeCurrent(NULL, NULL))
 694     {
 695         ERR("Failed to disable GL context.\n");
 696     }
 697
 698     if (context->isPBuffer)
 699     {
 700         GL_EXTCALL(wglReleasePbufferDCARB(context->pbuffer, context->hdc));
 701         GL_EXTCALL(wglDestroyPbufferARB(context->pbuffer));
 702     }
 703     else
 704     {
 705         ReleaseDC(context->win_handle, context->hdc);
 706     }
 707
 708     if (!pwglDeleteContext(context->glCtx))
 709     {
 710         DWORD err = GetLastError();
 711         ERR("wglDeleteContext(%p) failed, last error %#x.\n", context->glCtx, err);
 712     }
 713 }
 714
 715 DWORD context_get_tls_idx(void)
 716 {
 717     return wined3d_context_tls_idx;
 718 }
 719
 720 void context_set_tls_idx(DWORD idx)
 721 {
 722     wined3d_context_tls_idx = idx;
 723 }
 724
 725 struct wined3d_context *context_get_current(void)
 726 {
 727     return TlsGetValue(wined3d_context_tls_idx);
 728 }
 729
 730 BOOL context_set_current(struct wined3d_context *ctx)
 731 {
 732     struct wined3d_context *old = context_get_current();
 733
 734     if (old == ctx)
 735     {
 736         TRACE("Already using D3D context %p.\n", ctx);
 737         return TRUE;
 738     }
 739
 740     if (old)
 741     {
 742         if (old->destroyed)
 743         {
 744             TRACE("Switching away from destroyed context %p.\n", old);
 745             context_destroy_gl_resources(old);
 746             HeapFree(GetProcessHeap(), 0, old);
 747         }
 748         else
 749         {
 750             old->current = 0;
 751         }
 752     }
 753
 754     if (ctx)
 755     {
 756         TRACE("Switching to D3D context %p, GL context %p, device context %p.\n", ctx, ctx->glCtx, ctx->hdc);
 757         if (!pwglMakeCurrent(ctx->hdc, ctx->glCtx))
 758         {
 759             ERR("Failed to make GL context %p current on device context %p.\n", ctx->glCtx, ctx->hdc);
 760             return FALSE;
 761         }
 762         ctx->current = 1;
 763     }
 764     else
 765     {
 766         TRACE("Clearing current D3D context.\n");
 767         if (!pwglMakeCurrent(NULL, NULL))
 768         {
 769             ERR("Failed to clear current GL context.\n");
 770             return FALSE;
 771         }
 772     }
 773
 774     return TlsSetValue(wined3d_context_tls_idx, ctx);
 775 }
 776
 777 /*****************************************************************************
 778  * Context_MarkStateDirty
 779  *
 780  * Marks a state in a context dirty. Only one context, opposed to
 781  * IWineD3DDeviceImpl_MarkStateDirty, which marks the state dirty in all
 782  * contexts
 783  *
 784  * Params:
 785  *  context: Context to mark the state dirty in
 786  *  state: State to mark dirty
 787  *  StateTable: Pointer to the state table in use(for state grouping)
 788  *
 789  *****************************************************************************/
 790 static void Context_MarkStateDirty(struct wined3d_context *context, DWORD state, const struct StateEntry *StateTable)
 791 {
 792     DWORD rep = StateTable[state].representative;
 793     DWORD idx;
 794     BYTE shift;
 795
 796     if(!rep || isStateDirty(context, rep)) return;
 797
 798     context->dirtyArray[context->numDirtyEntries++] = rep;
 799     idx = rep >> 5;
 800     shift = rep & 0x1f;
 801     context->isStateDirty[idx] |= (1 << shift);
 802 }
 803
 804 /*****************************************************************************
 805  * AddContextToArray
 806  *
 807  * Adds a context to the context array. Helper function for CreateContext
 808  *
 809  * This method is not called in performance-critical code paths, only when a
 810  * new render target or swapchain is created. Thus performance is not an issue
 811  * here.
 812  *
 813  * Params:
 814  *  This: Device to add the context for
 815  *  hdc: device context
 816  *  glCtx: WGL context to add
 817  *  pbuffer: optional pbuffer used with this context
 818  *
 819  *****************************************************************************/
 820 static struct wined3d_context *AddContextToArray(IWineD3DDeviceImpl *This,
 821         HWND win_handle, HDC hdc, HGLRC glCtx, HPBUFFERARB pbuffer)
 822 {
 823     struct wined3d_context **oldArray = This->contexts;
 824     DWORD state;
 825
 826     This->contexts = HeapAlloc(GetProcessHeap(), 0, sizeof(*This->contexts) * (This->numContexts + 1));
 827     if(This->contexts == NULL) {
 828         ERR("Unable to grow the context array\n");
 829         This->contexts = oldArray;
 830         return NULL;
 831     }
 832     if(oldArray) {
 833         memcpy(This->contexts, oldArray, sizeof(*This->contexts) * This->numContexts);
 834     }
 835
 836     This->contexts[This->numContexts] = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(**This->contexts));
 837     if(This->contexts[This->numContexts] == NULL) {
 838         ERR("Unable to allocate a new context\n");
 839         HeapFree(GetProcessHeap(), 0, This->contexts);
 840         This->contexts = oldArray;
 841         return NULL;
 842     }
 843
 844     This->contexts[This->numContexts]->hdc = hdc;
 845     This->contexts[This->numContexts]->glCtx = glCtx;
 846     This->contexts[This->numContexts]->pbuffer = pbuffer;
 847     This->contexts[This->numContexts]->win_handle = win_handle;
 848     HeapFree(GetProcessHeap(), 0, oldArray);
 849
 850     /* Mark all states dirty to force a proper initialization of the states on the first use of the context
 851      */
 852     for(state = 0; state <= STATE_HIGHEST; state++) {
 853         Context_MarkStateDirty(This->contexts[This->numContexts], state, This->StateTable);
 854     }
 855
 856     This->numContexts++;
 857     TRACE("Created context %p\n", This->contexts[This->numContexts - 1]);
 858     return This->contexts[This->numContexts - 1];
 859 }
 860
 861 /* This function takes care of WineD3D pixel format selection. */
 862 static int WineD3D_ChoosePixelFormat(IWineD3DDeviceImpl *This, HDC hdc,
 863         const struct GlPixelFormatDesc *color_format_desc, const struct GlPixelFormatDesc *ds_format_desc,
 864         BOOL auxBuffers, int numSamples, BOOL pbuffer, BOOL findCompatible)
 865 {
 866     int iPixelFormat=0;
 867     unsigned int matchtry;
 868     short redBits, greenBits, blueBits, alphaBits, colorBits;
 869     short depthBits=0, stencilBits=0;
 870
 871     struct match_type {
 872         BOOL require_aux;
 873         BOOL exact_alpha;
 874         BOOL exact_color;
 875     } matches[] = {
 876         /* First, try without alpha match buffers. MacOS supports aux buffers only
 877          * on A8R8G8B8, and we prefer better offscreen rendering over an alpha match.
 878          * Then try without aux buffers - this is the most common cause for not
 879          * finding a pixel format. Also some drivers(the open source ones)
 880          * only offer 32 bit ARB pixel formats. First try without an exact alpha
 881          * match, then try without an exact alpha and color match.
 882          */
 883         { TRUE,  TRUE,  TRUE  },
 884         { TRUE,  FALSE, TRUE  },
 885         { FALSE, TRUE,  TRUE  },
 886         { FALSE, FALSE, TRUE  },
 887         { TRUE,  FALSE, FALSE },
 888         { FALSE, FALSE, FALSE },
 889     };
 890
 891     int i = 0;
 892     int nCfgs = This->adapter->nCfgs;
 893
 894     TRACE("ColorFormat=%s, DepthStencilFormat=%s, auxBuffers=%d, numSamples=%d, pbuffer=%d, findCompatible=%d\n",
 895           debug_d3dformat(color_format_desc->format), debug_d3dformat(ds_format_desc->format),
 896           auxBuffers, numSamples, pbuffer, findCompatible);
 897
 898     if (!getColorBits(color_format_desc, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits))
 899     {
 900         ERR("Unable to get color bits for format %s (%#x)!\n",
 901                 debug_d3dformat(color_format_desc->format), color_format_desc->format);
 902         return 0;
 903     }
 904
 905     /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 906      * You are able to add a depth + stencil surface at a later stage when you need it.
 907      * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
 908      * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
 909      * context, need torecreate shaders, textures and other resources.
 910      *
 911      * The context manager already takes care of the state problem and for the other tasks code from Reset
 912      * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
 913      * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
 914      * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
 915      * issue needs to be fixed. */
 916     if (ds_format_desc->format != WINED3DFMT_D24S8)
 917     {
 918         FIXME("Add OpenGL context recreation support to SetDepthStencilSurface\n");
 919         ds_format_desc = getFormatDescEntry(WINED3DFMT_D24S8, &This->adapter->gl_info);
 920     }
 921
 922     getDepthStencilBits(ds_format_desc, &depthBits, &stencilBits);
 923
 924     for(matchtry = 0; matchtry < (sizeof(matches) / sizeof(matches[0])) && !iPixelFormat; matchtry++) {
 925         for(i=0; i<nCfgs; i++) {
 926             BOOL exactDepthMatch = TRUE;
 927             WineD3D_PixelFormat *cfg = &This->adapter->cfgs[i];
 928
 929             /* For now only accept RGBA formats. Perhaps some day we will
 930              * allow floating point formats for pbuffers. */
 931             if(cfg->iPixelType != WGL_TYPE_RGBA_ARB)
 932                 continue;
 933
 934             /* In window mode (!pbuffer) we need a window drawable format and double buffering. */
 935             if(!pbuffer && !(cfg->windowDrawable && cfg->doubleBuffer))
 936                 continue;
 937
 938             /* We like to have aux buffers in backbuffer mode */
 939             if(auxBuffers && !cfg->auxBuffers && matches[matchtry].require_aux)
 940                 continue;
 941
 942             /* In pbuffer-mode we need a pbuffer-capable format but we don't want double buffering */
 943             if(pbuffer && (!cfg->pbufferDrawable || cfg->doubleBuffer))
 944                 continue;
 945
 946             if(matches[matchtry].exact_color) {
 947                 if(cfg->redSize != redBits)
 948                     continue;
 949                 if(cfg->greenSize != greenBits)
 950                     continue;
 951                 if(cfg->blueSize != blueBits)
 952                     continue;
 953             } else {
 954                 if(cfg->redSize < redBits)
 955                     continue;
 956                 if(cfg->greenSize < greenBits)
 957                     continue;
 958                 if(cfg->blueSize < blueBits)
 959                     continue;
 960             }
 961             if(matches[matchtry].exact_alpha) {
 962                 if(cfg->alphaSize != alphaBits)
 963                     continue;
 964             } else {
 965                 if(cfg->alphaSize < alphaBits)
 966                     continue;
 967             }
 968
 969             /* We try to locate a format which matches our requirements exactly. In case of
 970              * depth it is no problem to emulate 16-bit using e.g. 24-bit, so accept that. */
 971             if(cfg->depthSize < depthBits)
 972                 continue;
 973             else if(cfg->depthSize > depthBits)
 974                 exactDepthMatch = FALSE;
 975
 976             /* In all cases make sure the number of stencil bits matches our requirements
 977              * even when we don't need stencil because it could affect performance EXCEPT
 978              * on cards which don't offer depth formats without stencil like the i915 drivers
 979              * on Linux. */
 980             if(stencilBits != cfg->stencilSize && !(This->adapter->brokenStencil && stencilBits <= cfg->stencilSize))
 981                 continue;
 982
 983             /* Check multisampling support */
 984             if(cfg->numSamples != numSamples)
 985                 continue;
 986
 987             /* When we have passed all the checks then we have found a format which matches our
 988              * requirements. Note that we only check for a limit number of capabilities right now,
 989              * so there can easily be a dozen of pixel formats which appear to be the 'same' but
 990              * can still differ in things like multisampling, stereo, SRGB and other flags.
 991              */
 992
 993             /* Exit the loop as we have found a format :) */
 994             if(exactDepthMatch) {
 995                 iPixelFormat = cfg->iPixelFormat;
 996                 break;
 997             } else if(!iPixelFormat) {
 998                 /* In the end we might end up with a format which doesn't exactly match our depth
 999                  * requirements. Accept the first format we found because formats with higher iPixelFormat
1000                  * values tend to have more extended capabilities (e.g. multisampling) which we don't need. */
1001                 iPixelFormat = cfg->iPixelFormat;
1002             }
1003         }
1004     }
1005
1006     /* When findCompatible is set and no suitable format was found, let ChoosePixelFormat choose a pixel format in order not to crash. */
1007     if(!iPixelFormat && !findCompatible) {
1008         ERR("Can't find a suitable iPixelFormat\n");
1009         return FALSE;
1010     } else if(!iPixelFormat) {
1011         PIXELFORMATDESCRIPTOR pfd;
1012
1013         TRACE("Falling back to ChoosePixelFormat as we weren't able to find an exactly matching pixel format\n");
1014         /* PixelFormat selection */
1015         ZeroMemory(&pfd, sizeof(pfd));
1016         pfd.nSize      = sizeof(pfd);
1017         pfd.nVersion   = 1;
1018         pfd.dwFlags    = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW;/*PFD_GENERIC_ACCELERATED*/
1019         pfd.iPixelType = PFD_TYPE_RGBA;
1020         pfd.cAlphaBits = alphaBits;
1021         pfd.cColorBits = colorBits;
1022         pfd.cDepthBits = depthBits;
1023         pfd.cStencilBits = stencilBits;
1024         pfd.iLayerType = PFD_MAIN_PLANE;
1025
1026         iPixelFormat = ChoosePixelFormat(hdc, &pfd);
1027         if(!iPixelFormat) {
1028             /* If this happens something is very wrong as ChoosePixelFormat barely fails */
1029             ERR("Can't find a suitable iPixelFormat\n");
1030             return FALSE;
1031         }
1032     }
1033
1034     TRACE("Found iPixelFormat=%d for ColorFormat=%s, DepthStencilFormat=%s\n",
1035             iPixelFormat, debug_d3dformat(color_format_desc->format), debug_d3dformat(ds_format_desc->format));
1036     return iPixelFormat;
1037 }
1038
1039 /*****************************************************************************
1040  * CreateContext
1041  *
1042  * Creates a new context for a window, or a pbuffer context.
1043  *
1044  * * Params:
1045  *  This: Device to activate the context for
1046  *  target: Surface this context will render to
1047  *  win_handle: handle to the window which we are drawing to
1048  *  create_pbuffer: tells whether to create a pbuffer or not
1049  *  pPresentParameters: contains the pixelformats to use for onscreen rendering
1050  *
1051  *****************************************************************************/
1052 struct wined3d_context *CreateContext(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *target,
1053         HWND win_handle, BOOL create_pbuffer, const WINED3DPRESENT_PARAMETERS *pPresentParms)
1054 {
1055     const struct wined3d_gl_info *gl_info = &This->adapter->gl_info;
1056     struct wined3d_context *ret = NULL;
1057     HPBUFFERARB pbuffer = NULL;
1058     unsigned int s;
1059     HGLRC ctx;
1060     HDC hdc;
1061
1062     TRACE("(%p): Creating a %s context for render target %p\n", This, create_pbuffer ? "offscreen" : "onscreen", target);
1063
1064     if(create_pbuffer) {
1065         HDC hdc_parent = GetDC(win_handle);
1066         int iPixelFormat = 0;
1067
1068         IWineD3DSurface *StencilSurface = This->stencilBufferTarget;
1069         const struct GlPixelFormatDesc *ds_format_desc = StencilSurface
1070                 ? ((IWineD3DSurfaceImpl *)StencilSurface)->resource.format_desc
1071                 : getFormatDescEntry(WINED3DFMT_UNKNOWN, &This->adapter->gl_info);
1072
1073         /* Try to find a pixel format with pbuffer support. */
1074         iPixelFormat = WineD3D_ChoosePixelFormat(This, hdc_parent, target->resource.format_desc,
1075                 ds_format_desc, FALSE /* auxBuffers */, 0 /* numSamples */, TRUE /* PBUFFER */,
1076                 FALSE /* findCompatible */);
1077         if(!iPixelFormat) {
1078             TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1079
1080             /* For some reason we weren't able to find a format, try to find something instead of crashing.
1081              * A reason for failure could have been wglChoosePixelFormatARB strictness. */
1082             iPixelFormat = WineD3D_ChoosePixelFormat(This, hdc_parent, target->resource.format_desc,
1083                     ds_format_desc, FALSE /* auxBuffer */, 0 /* numSamples */, TRUE /* PBUFFER */,
1084                     TRUE /* findCompatible */);
1085         }
1086
1087         /* This shouldn't happen as ChoosePixelFormat always returns something */
1088         if(!iPixelFormat) {
1089             ERR("Unable to locate a pixel format for a pbuffer\n");
1090             ReleaseDC(win_handle, hdc_parent);
1091             goto out;
1092         }
1093
1094         TRACE("Creating a pBuffer drawable for the new context\n");
1095         pbuffer = GL_EXTCALL(wglCreatePbufferARB(hdc_parent, iPixelFormat, target->currentDesc.Width, target->currentDesc.Height, 0));
1096         if(!pbuffer) {
1097             ERR("Cannot create a pbuffer\n");
1098             ReleaseDC(win_handle, hdc_parent);
1099             goto out;
1100         }
1101
1102         /* In WGL a pbuffer is 'wrapped' inside a HDC to 'fool' wglMakeCurrent */
1103         hdc = GL_EXTCALL(wglGetPbufferDCARB(pbuffer));
1104         if(!hdc) {
1105             ERR("Cannot get a HDC for pbuffer (%p)\n", pbuffer);
1106             GL_EXTCALL(wglDestroyPbufferARB(pbuffer));
1107             ReleaseDC(win_handle, hdc_parent);
1108             goto out;
1109         }
1110         ReleaseDC(win_handle, hdc_parent);
1111     } else {
1112         PIXELFORMATDESCRIPTOR pfd;
1113         int iPixelFormat;
1114         int res;
1115         const struct GlPixelFormatDesc *color_format_desc = target->resource.format_desc;
1116         const struct GlPixelFormatDesc *ds_format_desc = getFormatDescEntry(WINED3DFMT_UNKNOWN,
1117                 &This->adapter->gl_info);
1118         BOOL auxBuffers = FALSE;
1119         int numSamples = 0;
1120
1121         hdc = GetDC(win_handle);
1122         if(hdc == NULL) {
1123             ERR("Cannot retrieve a device context!\n");
1124             goto out;
1125         }
1126
1127         /* In case of ORM_BACKBUFFER, make sure to request an alpha component for X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
1128         if(wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER) {
1129             auxBuffers = TRUE;
1130
1131             if (color_format_desc->format == WINED3DFMT_X4R4G4B4)
1132                 color_format_desc = getFormatDescEntry(WINED3DFMT_A4R4G4B4, &This->adapter->gl_info);
1133             else if (color_format_desc->format == WINED3DFMT_X8R8G8B8)
1134                 color_format_desc = getFormatDescEntry(WINED3DFMT_A8R8G8B8, &This->adapter->gl_info);
1135         }
1136
1137         /* DirectDraw supports 8bit paletted render targets and these are used by old games like Starcraft and C&C.
1138          * Most modern hardware doesn't support 8bit natively so we perform some form of 8bit -> 32bit conversion.
1139          * The conversion (ab)uses the alpha component for storing the palette index. For this reason we require
1140          * a format with 8bit alpha, so request A8R8G8B8. */
1141         if (color_format_desc->format == WINED3DFMT_P8)
1142             color_format_desc = getFormatDescEntry(WINED3DFMT_A8R8G8B8, &This->adapter->gl_info);
1143
1144         /* Retrieve the depth stencil format from the present parameters.
1145          * The choice of the proper format can give a nice performance boost
1146          * in case of GPU limited programs. */
1147         if(pPresentParms->EnableAutoDepthStencil) {
1148             TRACE("pPresentParms->EnableAutoDepthStencil=enabled; using AutoDepthStencilFormat=%s\n", debug_d3dformat(pPresentParms->AutoDepthStencilFormat));
1149             ds_format_desc = getFormatDescEntry(pPresentParms->AutoDepthStencilFormat, &This->adapter->gl_info);
1150         }
1151
1152         /* D3D only allows multisampling when SwapEffect is set to WINED3DSWAPEFFECT_DISCARD */
1153         if(pPresentParms->MultiSampleType && (pPresentParms->SwapEffect == WINED3DSWAPEFFECT_DISCARD)) {
1154             if(!GL_SUPPORT(ARB_MULTISAMPLE))
1155                 ERR("The program is requesting multisampling without support!\n");
1156             else {
1157                 ERR("Requesting MultiSampleType=%d\n", pPresentParms->MultiSampleType);
1158                 numSamples = pPresentParms->MultiSampleType;
1159             }
1160         }
1161
1162         /* Try to find a pixel format which matches our requirements */
1163         iPixelFormat = WineD3D_ChoosePixelFormat(This, hdc, color_format_desc, ds_format_desc,
1164                 auxBuffers, numSamples, FALSE /* PBUFFER */, FALSE /* findCompatible */);
1165
1166         /* Try to locate a compatible format if we weren't able to find anything */
1167         if(!iPixelFormat) {
1168             TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1169             iPixelFormat = WineD3D_ChoosePixelFormat(This, hdc, color_format_desc, ds_format_desc,
1170                     auxBuffers, 0 /* numSamples */, FALSE /* PBUFFER */, TRUE /* findCompatible */ );
1171         }
1172
1173         /* If we still don't have a pixel format, something is very wrong as ChoosePixelFormat barely fails */
1174         if(!iPixelFormat) {
1175             ERR("Can't find a suitable iPixelFormat\n");
1176             return NULL;
1177         }
1178
1179         DescribePixelFormat(hdc, iPixelFormat, sizeof(pfd), &pfd);
1180         res = SetPixelFormat(hdc, iPixelFormat, NULL);
1181         if(!res) {
1182             int oldPixelFormat = GetPixelFormat(hdc);
1183
1184             /* By default WGL doesn't allow pixel format adjustments but we need it here.
1185              * For this reason there is a WINE-specific wglSetPixelFormat which allows you to
1186              * set the pixel format multiple times. Only use it when it is really needed. */
1187
1188             if(oldPixelFormat == iPixelFormat) {
1189                 /* We don't have to do anything as the formats are the same :) */
1190             } else if(oldPixelFormat && GL_SUPPORT(WGL_WINE_PIXEL_FORMAT_PASSTHROUGH)) {
1191                 res = GL_EXTCALL(wglSetPixelFormatWINE(hdc, iPixelFormat, NULL));
1192
1193                 if(!res) {
1194                     ERR("wglSetPixelFormatWINE failed on HDC=%p for iPixelFormat=%d\n", hdc, iPixelFormat);
1195                     return NULL;
1196                 }
1197             } else if(oldPixelFormat) {
1198                 /* OpenGL doesn't allow pixel format adjustments. Print an error and continue using the old format.
1199                  * There's a big chance that the old format works although with a performance hit and perhaps rendering errors. */
1200                 ERR("HDC=%p is already set to iPixelFormat=%d and OpenGL doesn't allow changes!\n", hdc, oldPixelFormat);
1201             } else {
1202                 ERR("SetPixelFormat failed on HDC=%p for iPixelFormat=%d\n", hdc, iPixelFormat);
1203                 return NULL;
1204             }
1205         }
1206     }
1207
1208     ctx = pwglCreateContext(hdc);
1209     if (This->numContexts)
1210     {
1211         if (!pwglShareLists(This->contexts[0]->glCtx, ctx))
1212         {
1213             DWORD err = GetLastError();
1214             ERR("wglShareLists(%p, %p) failed, last error %#x.\n",
1215                     This->contexts[0]->glCtx, ctx, err);
1216         }
1217     }
1218
1219     if(!ctx) {
1220         ERR("Failed to create a WGL context\n");
1221         if(create_pbuffer) {
1222             GL_EXTCALL(wglReleasePbufferDCARB(pbuffer, hdc));
1223             GL_EXTCALL(wglDestroyPbufferARB(pbuffer));
1224         }
1225         goto out;
1226     }
1227     ret = AddContextToArray(This, win_handle, hdc, ctx, pbuffer);
1228     if(!ret) {
1229         ERR("Failed to add the newly created context to the context list\n");
1230         if (!pwglDeleteContext(ctx))
1231         {
1232             DWORD err = GetLastError();
1233             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, err);
1234         }
1235         if(create_pbuffer) {
1236             GL_EXTCALL(wglReleasePbufferDCARB(pbuffer, hdc));
1237             GL_EXTCALL(wglDestroyPbufferARB(pbuffer));
1238         }
1239         goto out;
1240     }
1241     ret->gl_info = &This->adapter->gl_info;
1242     ret->surface = (IWineD3DSurface *) target;
1243     ret->current_rt = (IWineD3DSurface *)target;
1244     ret->isPBuffer = create_pbuffer;
1245     ret->tid = GetCurrentThreadId();
1246     if(This->shader_backend->shader_dirtifyable_constants((IWineD3DDevice *) This)) {
1247         /* Create the dirty constants array and initialize them to dirty */
1248         ret->vshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
1249                 sizeof(*ret->vshader_const_dirty) * GL_LIMITS(vshader_constantsF));
1250         ret->pshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
1251                 sizeof(*ret->pshader_const_dirty) * GL_LIMITS(pshader_constantsF));
1252         memset(ret->vshader_const_dirty, 1,
1253                sizeof(*ret->vshader_const_dirty) * GL_LIMITS(vshader_constantsF));
1254         memset(ret->pshader_const_dirty, 1,
1255                 sizeof(*ret->pshader_const_dirty) * GL_LIMITS(pshader_constantsF));
1256     }
1257
1258     ret->free_occlusion_query_size = 4;
1259     ret->free_occlusion_queries = HeapAlloc(GetProcessHeap(), 0,
1260             ret->free_occlusion_query_size * sizeof(*ret->free_occlusion_queries));
1261     if (!ret->free_occlusion_queries) goto out;
1262
1263     list_init(&ret->occlusion_queries);
1264
1265     ret->free_event_query_size = 4;
1266     ret->free_event_queries = HeapAlloc(GetProcessHeap(), 0,
1267             ret->free_event_query_size * sizeof(*ret->free_event_queries));
1268     if (!ret->free_event_queries) goto out;
1269
1270     list_init(&ret->event_queries);
1271
1272     TRACE("Successfully created new context %p\n", ret);
1273
1274     list_init(&ret->fbo_list);
1275
1276     /* Set up the context defaults */
1277     if (!context_set_current(ret))
1278     {
1279         ERR("Cannot activate context to set up defaults\n");
1280         goto out;
1281     }
1282
1283     ENTER_GL();
1284
1285     glGetIntegerv(GL_AUX_BUFFERS, &ret->aux_buffers);
1286
1287     TRACE("Setting up the screen\n");
1288     /* Clear the screen */
1289     glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
1290     checkGLcall("glClearColor");
1291     glClearIndex(0);
1292     glClearDepth(1);
1293     glClearStencil(0xffff);
1294
1295     checkGLcall("glClear");
1296
1297     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
1298     checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
1299
1300     glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
1301     checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
1302
1303     glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1304     checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
1305
1306     glPixelStorei(GL_PACK_ALIGNMENT, This->surface_alignment);
1307     checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, This->surface_alignment);");
1308     glPixelStorei(GL_UNPACK_ALIGNMENT, This->surface_alignment);
1309     checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, This->surface_alignment);");
1310
1311     if(GL_SUPPORT(APPLE_CLIENT_STORAGE)) {
1312         /* Most textures will use client storage if supported. Exceptions are non-native power of 2 textures
1313          * and textures in DIB sections(due to the memory protection).
1314          */
1315         glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
1316         checkGLcall("glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE)");
1317     }
1318     if(GL_SUPPORT(ARB_VERTEX_BLEND)) {
1319         /* Direct3D always uses n-1 weights for n world matrices and uses 1 - sum for the last one
1320          * this is equal to GL_WEIGHT_SUM_UNITY_ARB. Enabling it doesn't do anything unless
1321          * GL_VERTEX_BLEND_ARB isn't enabled too
1322          */
1323         glEnable(GL_WEIGHT_SUM_UNITY_ARB);
1324         checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
1325     }
1326     if(GL_SUPPORT(NV_TEXTURE_SHADER2)) {
1327         /* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
1328          * the previous texture where to source the offset from is always unit - 1.
1329          */
1330         for(s = 1; s < GL_LIMITS(textures); s++) {
1331             GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + s));
1332             glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
1333             checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...");
1334         }
1335     }
1336     if(GL_SUPPORT(ARB_FRAGMENT_PROGRAM)) {
1337         /* MacOS(radeon X1600 at least, but most likely others too) refuses to draw if GLSL and ARBFP are
1338          * enabled, but the currently bound arbfp program is 0. Enabling ARBFP with prog 0 is invalid, but
1339          * GLSL should bypass this. This causes problems in programs that never use the fixed function pipeline,
1340          * because the ARBFP extension is enabled by the ARBFP pipeline at context creation, but no program
1341          * is ever assigned.
1342          *
1343          * So make sure a program is assigned to each context. The first real ARBFP use will set a different
1344          * program and the dummy program is destroyed when the context is destroyed.
1345          */
1346         const char *dummy_program =
1347                 "!!ARBfp1.0\n"
1348                 "MOV result.color, fragment.color.primary;\n"
1349                 "END\n";
1350         GL_EXTCALL(glGenProgramsARB(1, &ret->dummy_arbfp_prog));
1351         GL_EXTCALL(glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, ret->dummy_arbfp_prog));
1352         GL_EXTCALL(glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(dummy_program), dummy_program));
1353     }
1354
1355     for(s = 0; s < GL_LIMITS(point_sprite_units); s++) {
1356         GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + s));
1357         glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
1358         checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)");
1359     }
1360
1361     if (GL_SUPPORT(EXT_PROVOKING_VERTEX))
1362     {
1363         GL_EXTCALL(glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT));
1364     }
1365
1366     LEAVE_GL();
1367
1368     This->frag_pipe->enable_extension((IWineD3DDevice *) This, TRUE);
1369
1370     return ret;
1371
1372 out:
1373     if (ret)
1374     {
1375         HeapFree(GetProcessHeap(), 0, ret->free_event_queries);
1376         HeapFree(GetProcessHeap(), 0, ret->free_occlusion_queries);
1377         HeapFree(GetProcessHeap(), 0, ret->pshader_const_dirty);
1378         HeapFree(GetProcessHeap(), 0, ret->vshader_const_dirty);
1379         HeapFree(GetProcessHeap(), 0, ret);
1380     }
1381     return NULL;
1382 }
1383
1384 /*****************************************************************************
1385  * RemoveContextFromArray
1386  *
1387  * Removes a context from the context manager. The opengl context is not
1388  * destroyed or unset. context is not a valid pointer after that call.
1389  *
1390  * Similar to the former call this isn't a performance critical function. A
1391  * helper function for DestroyContext.
1392  *
1393  * Params:
1394  *  This: Device to activate the context for
1395  *  context: Context to remove
1396  *
1397  *****************************************************************************/
1398 static void RemoveContextFromArray(IWineD3DDeviceImpl *This, struct wined3d_context *context)
1399 {
1400     struct wined3d_context **new_array;
1401     BOOL found = FALSE;
1402     UINT i;
1403
1404     TRACE("Removing ctx %p\n", context);
1405
1406     for (i = 0; i < This->numContexts; ++i)
1407     {
1408         if (This->contexts[i] == context)
1409         {
1410             found = TRUE;
1411             break;
1412         }
1413     }
1414
1415     if (!found)
1416     {
1417         ERR("Context %p doesn't exist in context array\n", context);
1418         return;
1419     }
1420
1421     while (i < This->numContexts - 1)
1422     {
1423         This->contexts[i] = This->contexts[i + 1];
1424         ++i;
1425     }
1426
1427     --This->numContexts;
1428     if (!This->numContexts)
1429     {
1430         HeapFree(GetProcessHeap(), 0, This->contexts);
1431         This->contexts = NULL;
1432         return;
1433     }
1434
1435     new_array = HeapReAlloc(GetProcessHeap(), 0, This->contexts, This->numContexts * sizeof(*This->contexts));
1436     if (!new_array)
1437     {
1438         ERR("Failed to shrink context array. Oh well.\n");
1439         return;
1440     }
1441
1442     This->contexts = new_array;
1443 }
1444
1445 /*****************************************************************************
1446  * DestroyContext
1447  *
1448  * Destroys a wineD3DContext
1449  *
1450  * Params:
1451  *  This: Device to activate the context for
1452  *  context: Context to destroy
1453  *
1454  *****************************************************************************/
1455 void DestroyContext(IWineD3DDeviceImpl *This, struct wined3d_context *context)
1456 {
1457     BOOL destroy;
1458
1459     TRACE("Destroying ctx %p\n", context);
1460
1461     if (context->tid == GetCurrentThreadId() || !context->current)
1462     {
1463         context_destroy_gl_resources(context);
1464         destroy = TRUE;
1465
1466         if (!context_set_current(NULL))
1467         {
1468             ERR("Failed to clear current D3D context.\n");
1469         }
1470     }
1471     else
1472     {
1473         context->destroyed = 1;
1474         destroy = FALSE;
1475     }
1476
1477     HeapFree(GetProcessHeap(), 0, context->vshader_const_dirty);
1478     HeapFree(GetProcessHeap(), 0, context->pshader_const_dirty);
1479     RemoveContextFromArray(This, context);
1480     if (destroy) HeapFree(GetProcessHeap(), 0, context);
1481 }
1482
1483 /* GL locking is done by the caller */
1484 static inline void set_blit_dimension(UINT width, UINT height) {
1485     glMatrixMode(GL_PROJECTION);
1486     checkGLcall("glMatrixMode(GL_PROJECTION)");
1487     glLoadIdentity();
1488     checkGLcall("glLoadIdentity()");
1489     glOrtho(0, width, height, 0, 0.0, -1.0);
1490     checkGLcall("glOrtho");
1491     glViewport(0, 0, width, height);
1492     checkGLcall("glViewport");
1493 }
1494
1495 /*****************************************************************************
1496  * SetupForBlit
1497  *
1498  * Sets up a context for DirectDraw blitting.
1499  * All texture units are disabled, texture unit 0 is set as current unit
1500  * fog, lighting, blending, alpha test, z test, scissor test, culling disabled
1501  * color writing enabled for all channels
1502  * register combiners disabled, shaders disabled
1503  * world matrix is set to identity, texture matrix 0 too
1504  * projection matrix is setup for drawing screen coordinates
1505  *
1506  * Params:
1507  *  This: Device to activate the context for
1508  *  context: Context to setup
1509  *  width: render target width
1510  *  height: render target height
1511  *
1512  *****************************************************************************/
1513 /* Context activation is done by the caller. */
1514 static inline void SetupForBlit(IWineD3DDeviceImpl *This, struct wined3d_context *context, UINT width, UINT height)
1515 {
1516     int i, sampler;
1517     const struct StateEntry *StateTable = This->StateTable;
1518     const struct wined3d_gl_info *gl_info = context->gl_info;
1519
1520     TRACE("Setting up context %p for blitting\n", context);
1521     if(context->last_was_blit) {
1522         if(context->blit_w != width || context->blit_h != height) {
1523             ENTER_GL();
1524             set_blit_dimension(width, height);
1525             LEAVE_GL();
1526             context->blit_w = width; context->blit_h = height;
1527             /* No need to dirtify here, the states are still dirtified because they weren't
1528              * applied since the last SetupForBlit call. Otherwise last_was_blit would not
1529              * be set
1530              */
1531         }
1532         TRACE("Context is already set up for blitting, nothing to do\n");
1533         return;
1534     }
1535     context->last_was_blit = TRUE;
1536
1537     /* TODO: Use a display list */
1538
1539     /* Disable shaders */
1540     ENTER_GL();
1541     This->shader_backend->shader_select(context, FALSE, FALSE);
1542     LEAVE_GL();
1543
1544     Context_MarkStateDirty(context, STATE_VSHADER, StateTable);
1545     Context_MarkStateDirty(context, STATE_PIXELSHADER, StateTable);
1546
1547     /* Call ENTER_GL() once for all gl calls below. In theory we should not call
1548      * helper functions in between gl calls. This function is full of Context_MarkStateDirty
1549      * which can safely be called from here, we only lock once instead locking/unlocking
1550      * after each GL call.
1551      */
1552     ENTER_GL();
1553
1554     /* Disable all textures. The caller can then bind a texture it wants to blit
1555      * from
1556      *
1557      * The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
1558      * function texture unit. No need to care for higher samplers
1559      */
1560     for(i = GL_LIMITS(textures) - 1; i > 0 ; i--) {
1561         sampler = This->rev_tex_unit_map[i];
1562         GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + i));
1563         checkGLcall("glActiveTextureARB");
1564
1565         if(GL_SUPPORT(ARB_TEXTURE_CUBE_MAP)) {
1566             glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1567             checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1568         }
1569         glDisable(GL_TEXTURE_3D);
1570         checkGLcall("glDisable GL_TEXTURE_3D");
1571         if(GL_SUPPORT(ARB_TEXTURE_RECTANGLE)) {
1572             glDisable(GL_TEXTURE_RECTANGLE_ARB);
1573             checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1574         }
1575         glDisable(GL_TEXTURE_2D);
1576         checkGLcall("glDisable GL_TEXTURE_2D");
1577
1578         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1579         checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
1580
1581         if (sampler != -1) {
1582             if (sampler < MAX_TEXTURES) {
1583                 Context_MarkStateDirty(context, STATE_TEXTURESTAGE(sampler, WINED3DTSS_COLOROP), StateTable);
1584             }
1585             Context_MarkStateDirty(context, STATE_SAMPLER(sampler), StateTable);
1586         }
1587     }
1588     GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
1589     checkGLcall("glActiveTextureARB");
1590
1591     sampler = This->rev_tex_unit_map[0];
1592
1593     if(GL_SUPPORT(ARB_TEXTURE_CUBE_MAP)) {
1594         glDisable(GL_TEXTURE_CUBE_MAP_ARB);
1595         checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
1596     }
1597     glDisable(GL_TEXTURE_3D);
1598     checkGLcall("glDisable GL_TEXTURE_3D");
1599     if(GL_SUPPORT(ARB_TEXTURE_RECTANGLE)) {
1600         glDisable(GL_TEXTURE_RECTANGLE_ARB);
1601         checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
1602     }
1603     glDisable(GL_TEXTURE_2D);
1604     checkGLcall("glDisable GL_TEXTURE_2D");
1605
1606     glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1607
1608     glMatrixMode(GL_TEXTURE);
1609     checkGLcall("glMatrixMode(GL_TEXTURE)");
1610     glLoadIdentity();
1611     checkGLcall("glLoadIdentity()");
1612
1613     if (GL_SUPPORT(EXT_TEXTURE_LOD_BIAS)) {
1614         glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
1615                   GL_TEXTURE_LOD_BIAS_EXT,
1616                   0.0f);
1617         checkGLcall("glTexEnvi GL_TEXTURE_LOD_BIAS_EXT ...");
1618     }
1619
1620     if (sampler != -1) {
1621         if (sampler < MAX_TEXTURES) {
1622             Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_TEXTURE0 + sampler), StateTable);
1623             Context_MarkStateDirty(context, STATE_TEXTURESTAGE(sampler, WINED3DTSS_COLOROP), StateTable);
1624         }
1625         Context_MarkStateDirty(context, STATE_SAMPLER(sampler), StateTable);
1626     }
1627
1628     /* Other misc states */
1629     glDisable(GL_ALPHA_TEST);
1630     checkGLcall("glDisable(GL_ALPHA_TEST)");
1631     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHATESTENABLE), StateTable);
1632     glDisable(GL_LIGHTING);
1633     checkGLcall("glDisable GL_LIGHTING");
1634     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_LIGHTING), StateTable);
1635     glDisable(GL_DEPTH_TEST);
1636     checkGLcall("glDisable GL_DEPTH_TEST");
1637     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ZENABLE), StateTable);
1638     glDisableWINE(GL_FOG);
1639     checkGLcall("glDisable GL_FOG");
1640     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_FOGENABLE), StateTable);
1641     glDisable(GL_BLEND);
1642     checkGLcall("glDisable GL_BLEND");
1643     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
1644     glDisable(GL_CULL_FACE);
1645     checkGLcall("glDisable GL_CULL_FACE");
1646     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CULLMODE), StateTable);
1647     glDisable(GL_STENCIL_TEST);
1648     checkGLcall("glDisable GL_STENCIL_TEST");
1649     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_STENCILENABLE), StateTable);
1650     glDisable(GL_SCISSOR_TEST);
1651     checkGLcall("glDisable GL_SCISSOR_TEST");
1652     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE), StateTable);
1653     if(GL_SUPPORT(ARB_POINT_SPRITE)) {
1654         glDisable(GL_POINT_SPRITE_ARB);
1655         checkGLcall("glDisable GL_POINT_SPRITE_ARB");
1656         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_POINTSPRITEENABLE), StateTable);
1657     }
1658     glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
1659     checkGLcall("glColorMask");
1660     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE), StateTable);
1661     if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
1662         glDisable(GL_COLOR_SUM_EXT);
1663         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SPECULARENABLE), StateTable);
1664         checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
1665     }
1666
1667     /* Setup transforms */
1668     glMatrixMode(GL_MODELVIEW);
1669     checkGLcall("glMatrixMode(GL_MODELVIEW)");
1670     glLoadIdentity();
1671     checkGLcall("glLoadIdentity()");
1672     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_WORLDMATRIX(0)), StateTable);
1673
1674     context->last_was_rhw = TRUE;
1675     Context_MarkStateDirty(context, STATE_VDECL, StateTable); /* because of last_was_rhw = TRUE */
1676
1677     glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
1678     glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
1679     glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
1680     glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
1681     glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
1682     glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
1683     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CLIPPING), StateTable);
1684
1685     set_blit_dimension(width, height);
1686
1687     LEAVE_GL();
1688
1689     context->blit_w = width; context->blit_h = height;
1690     Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
1691     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_PROJECTION), StateTable);
1692
1693
1694     This->frag_pipe->enable_extension((IWineD3DDevice *) This, FALSE);
1695 }
1696
1697 /*****************************************************************************
1698  * findThreadContextForSwapChain
1699  *
1700  * Searches a swapchain for all contexts and picks one for the thread tid.
1701  * If none can be found the swapchain is requested to create a new context
1702  *
1703  *****************************************************************************/
1704 static struct wined3d_context *findThreadContextForSwapChain(IWineD3DSwapChain *swapchain, DWORD tid)
1705 {
1706     unsigned int i;
1707
1708     for(i = 0; i < ((IWineD3DSwapChainImpl *) swapchain)->num_contexts; i++) {
1709         if(((IWineD3DSwapChainImpl *) swapchain)->context[i]->tid == tid) {
1710             return ((IWineD3DSwapChainImpl *) swapchain)->context[i];
1711         }
1712
1713     }
1714
1715     /* Create a new context for the thread */
1716     return IWineD3DSwapChainImpl_CreateContextForThread(swapchain);
1717 }
1718
1719 /*****************************************************************************
1720  * FindContext
1721  *
1722  * Finds a context for the current render target and thread
1723  *
1724  * Parameters:
1725  *  target: Render target to find the context for
1726  *  tid: Thread to activate the context for
1727  *
1728  * Returns: The needed context
1729  *
1730  *****************************************************************************/
1731 static inline struct wined3d_context *FindContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, DWORD tid)
1732 {
1733     IWineD3DSwapChain *swapchain = NULL;
1734     struct wined3d_context *current_context = context_get_current();
1735     const struct StateEntry *StateTable = This->StateTable;
1736     struct wined3d_context *context;
1737     BOOL old_render_offscreen;
1738
1739     if (current_context && current_context->destroyed) current_context = NULL;
1740
1741     if (!target)
1742     {
1743         if (current_context
1744                 && current_context->current_rt
1745                 && ((IWineD3DSurfaceImpl *)current_context->surface)->resource.wineD3DDevice == This)
1746         {
1747             target = current_context->current_rt;
1748         }
1749         else
1750         {
1751             IWineD3DSwapChainImpl *swapchain = (IWineD3DSwapChainImpl *)This->swapchains[0];
1752             if (swapchain->backBuffer) target = swapchain->backBuffer[0];
1753             else target = swapchain->frontBuffer;
1754         }
1755     }
1756
1757     if (current_context && current_context->current_rt == target)
1758     {
1759         return current_context;
1760     }
1761
1762     if (SUCCEEDED(IWineD3DSurface_GetContainer(target, &IID_IWineD3DSwapChain, (void **)&swapchain))) {
1763         TRACE("Rendering onscreen\n");
1764
1765         context = findThreadContextForSwapChain(swapchain, tid);
1766
1767         old_render_offscreen = context->render_offscreen;
1768         context->render_offscreen = FALSE;
1769         /* The context != This->activeContext will catch a NOP context change. This can occur
1770          * if we are switching back to swapchain rendering in case of FBO or Back Buffer offscreen
1771          * rendering. No context change is needed in that case
1772          */
1773
1774         if(wined3d_settings.offscreen_rendering_mode == ORM_PBUFFER) {
1775             if(This->pbufferContext && tid == This->pbufferContext->tid) {
1776                 This->pbufferContext->tid = 0;
1777             }
1778         }
1779         IWineD3DSwapChain_Release(swapchain);
1780     }
1781     else
1782     {
1783         TRACE("Rendering offscreen\n");
1784
1785 retry:
1786         if (wined3d_settings.offscreen_rendering_mode == ORM_PBUFFER)
1787         {
1788             IWineD3DSurfaceImpl *targetimpl = (IWineD3DSurfaceImpl *)target;
1789             if (!This->pbufferContext
1790                     || This->pbufferWidth < targetimpl->currentDesc.Width
1791                     || This->pbufferHeight < targetimpl->currentDesc.Height)
1792             {
1793                 if (This->pbufferContext) DestroyContext(This, This->pbufferContext);
1794
1795                 /* The display is irrelevant here, the window is 0. But
1796                  * CreateContext needs a valid X connection. Create the context
1797                  * on the same server as the primary swapchain. The primary
1798                  * swapchain is exists at this point. */
1799                 This->pbufferContext = CreateContext(This, targetimpl,
1800                         ((IWineD3DSwapChainImpl *)This->swapchains[0])->context[0]->win_handle,
1801                         TRUE /* pbuffer */, &((IWineD3DSwapChainImpl *)This->swapchains[0])->presentParms);
1802                 This->pbufferWidth = targetimpl->currentDesc.Width;
1803                 This->pbufferHeight = targetimpl->currentDesc.Height;
1804             }
1805
1806             if (This->pbufferContext)
1807             {
1808                 if (This->pbufferContext->tid && This->pbufferContext->tid != tid)
1809                 {
1810                     FIXME("The PBuffer context is only supported for one thread for now!\n");
1811                 }
1812                 This->pbufferContext->tid = tid;
1813                 context = This->pbufferContext;
1814             }
1815             else
1816             {
1817                 ERR("Failed to create a buffer context and drawable, falling back to back buffer offscreen rendering.\n");
1818                 wined3d_settings.offscreen_rendering_mode = ORM_BACKBUFFER;
1819                 goto retry;
1820             }
1821         }
1822         else
1823         {
1824             /* Stay with the currently active context. */
1825             if (current_context
1826                     && ((IWineD3DSurfaceImpl *)current_context->surface)->resource.wineD3DDevice == This)
1827             {
1828                 context = current_context;
1829             }
1830             else
1831             {
1832                 /* This may happen if the app jumps straight into offscreen rendering
1833                  * Start using the context of the primary swapchain. tid == 0 is no problem
1834                  * for findThreadContextForSwapChain.
1835                  *
1836                  * Can also happen on thread switches - in that case findThreadContextForSwapChain
1837                  * is perfect to call. */
1838                 context = findThreadContextForSwapChain(This->swapchains[0], tid);
1839             }
1840         }
1841
1842         old_render_offscreen = context->render_offscreen;
1843         context->render_offscreen = TRUE;
1844     }
1845
1846     if (context->render_offscreen != old_render_offscreen)
1847     {
1848         Context_MarkStateDirty(context, WINED3DTS_PROJECTION, StateTable);
1849         Context_MarkStateDirty(context, STATE_VDECL, StateTable);
1850         Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
1851         Context_MarkStateDirty(context, STATE_SCISSORRECT, StateTable);
1852         Context_MarkStateDirty(context, STATE_FRONTFACE, StateTable);
1853     }
1854
1855     /* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
1856      * the alpha blend state changes with different render target formats. */
1857     if (!context->current_rt)
1858     {
1859         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
1860     }
1861     else
1862     {
1863         const struct GlPixelFormatDesc *old = ((IWineD3DSurfaceImpl *)context->current_rt)->resource.format_desc;
1864         const struct GlPixelFormatDesc *new = ((IWineD3DSurfaceImpl *)target)->resource.format_desc;
1865
1866         if (old->format != new->format)
1867         {
1868             /* Disable blending when the alpha mask has changed and when a format doesn't support blending. */
1869             if ((old->alpha_mask && !new->alpha_mask) || (!old->alpha_mask && new->alpha_mask)
1870                     || !(new->Flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
1871             {
1872                 Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
1873             }
1874         }
1875
1876         /* When switching away from an offscreen render target, and we're not
1877          * using FBOs, we have to read the drawable into the texture. This is
1878          * done via PreLoad (and SFLAG_INDRAWABLE set on the surface). There
1879          * are some things that need care though. PreLoad needs a GL context,
1880          * and FindContext is called before the context is activated. It also
1881          * has to be called with the old rendertarget active, otherwise a
1882          * wrong drawable is read. */
1883         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
1884                 && old_render_offscreen && context->current_rt != target)
1885         {
1886             BOOL oldInDraw = This->isInDraw;
1887
1888             /* surface_internal_preload() requires a context to load the
1889              * texture, so it will call ActivateContext. Set isInDraw to true
1890              * to signal surface_internal_preload() that it has a context. */
1891
1892             /* FIXME: This is just broken. There's no guarantee whatsoever
1893              * that the currently active context, if any, is appropriate for
1894              * reading back the render target. We should probably call
1895              * context_set_current(context) here and then rely on
1896              * ActivateContext() doing the right thing. */
1897             This->isInDraw = TRUE;
1898
1899             /* Read the back buffer of the old drawable into the destination texture. */
1900             if (((IWineD3DSurfaceImpl *)context->current_rt)->texture_name_srgb)
1901             {
1902                 surface_internal_preload(context->current_rt, SRGB_BOTH);
1903             }
1904             else
1905             {
1906                 surface_internal_preload(context->current_rt, SRGB_RGB);
1907             }
1908
1909             IWineD3DSurface_ModifyLocation(context->current_rt, SFLAG_INDRAWABLE, FALSE);
1910
1911             This->isInDraw = oldInDraw;
1912         }
1913     }
1914
1915     context->draw_buffer_dirty = TRUE;
1916     context->current_rt = target;
1917
1918     return context;
1919 }
1920
1921 /* Context activation is done by the caller. */
1922 static void context_apply_draw_buffer(struct wined3d_context *context, BOOL blit)
1923 {
1924     const struct wined3d_gl_info *gl_info = context->gl_info;
1925     IWineD3DSurface *rt = context->current_rt;
1926     IWineD3DSwapChain *swapchain;
1927     IWineD3DDeviceImpl *device;
1928
1929     device = ((IWineD3DSurfaceImpl *)rt)->resource.wineD3DDevice;
1930     if (SUCCEEDED(IWineD3DSurface_GetContainer(rt, &IID_IWineD3DSwapChain, (void **)&swapchain)))
1931     {
1932         IWineD3DSwapChain_Release((IUnknown *)swapchain);
1933         ENTER_GL();
1934         glDrawBuffer(surface_get_gl_buffer(rt, swapchain));
1935         checkGLcall("glDrawBuffers()");
1936         LEAVE_GL();
1937     }
1938     else
1939     {
1940         ENTER_GL();
1941         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
1942         {
1943             if (!blit)
1944             {
1945                 if (GL_SUPPORT(ARB_DRAW_BUFFERS))
1946                 {
1947                     GL_EXTCALL(glDrawBuffersARB(GL_LIMITS(buffers), device->draw_buffers));
1948                     checkGLcall("glDrawBuffers()");
1949                 }
1950                 else
1951                 {
1952                     glDrawBuffer(device->draw_buffers[0]);
1953                     checkGLcall("glDrawBuffer()");
1954                 }
1955             } else {
1956                 glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
1957                 checkGLcall("glDrawBuffer()");
1958             }
1959         }
1960         else
1961         {
1962             glDrawBuffer(device->offscreenBuffer);
1963             checkGLcall("glDrawBuffer()");
1964         }
1965         LEAVE_GL();
1966     }
1967 }
1968
1969 /*****************************************************************************
1970  * ActivateContext
1971  *
1972  * Finds a rendering context and drawable matching the device and render
1973  * target for the current thread, activates them and puts them into the
1974  * requested state.
1975  *
1976  * Params:
1977  *  This: Device to activate the context for
1978  *  target: Requested render target
1979  *  usage: Prepares the context for blitting, drawing or other actions
1980  *
1981  *****************************************************************************/
1982 struct wined3d_context *ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, enum ContextUsage usage)
1983 {
1984     struct wined3d_context *current_context = context_get_current();
1985     DWORD                         tid = GetCurrentThreadId();
1986     DWORD                         i, dirtyState, idx;
1987     BYTE                          shift;
1988     const struct StateEntry       *StateTable = This->StateTable;
1989     const struct wined3d_gl_info *gl_info;
1990     struct wined3d_context *context;
1991
1992     TRACE("(%p): Selecting context for render target %p, thread %d\n", This, target, tid);
1993
1994     context = FindContext(This, target, tid);
1995
1996     gl_info = context->gl_info;
1997
1998     /* Activate the opengl context */
1999     if (context != current_context)
2000     {
2001         if (!context_set_current(context)) ERR("Failed to activate the new context.\n");
2002         else This->frag_pipe->enable_extension((IWineD3DDevice *)This, !context->last_was_blit);
2003
2004         if (context->vshader_const_dirty)
2005         {
2006             memset(context->vshader_const_dirty, 1,
2007                     sizeof(*context->vshader_const_dirty) * GL_LIMITS(vshader_constantsF));
2008             This->highest_dirty_vs_const = GL_LIMITS(vshader_constantsF);
2009         }
2010         if (context->pshader_const_dirty)
2011         {
2012             memset(context->pshader_const_dirty, 1,
2013                    sizeof(*context->pshader_const_dirty) * GL_LIMITS(pshader_constantsF));
2014             This->highest_dirty_ps_const = GL_LIMITS(pshader_constantsF);
2015         }
2016     }
2017
2018     switch (usage) {
2019         case CTXUSAGE_CLEAR:
2020         case CTXUSAGE_DRAWPRIM:
2021             if (wined3d_settings.offscreen_rendering_mode == ORM_FBO) {
2022                 ENTER_GL();
2023                 context_apply_fbo_state(context);
2024                 LEAVE_GL();
2025             }
2026             if (context->draw_buffer_dirty) {
2027                 context_apply_draw_buffer(context, FALSE);
2028                 context->draw_buffer_dirty = FALSE;
2029             }
2030             break;
2031
2032         case CTXUSAGE_BLIT:
2033             if (wined3d_settings.offscreen_rendering_mode == ORM_FBO) {
2034                 if (context->render_offscreen)
2035                 {
2036                     FIXME("Activating for CTXUSAGE_BLIT for an offscreen target with ORM_FBO. This should be avoided.\n");
2037                     ENTER_GL();
2038                     context_bind_fbo(context, GL_FRAMEBUFFER_EXT, &context->dst_fbo);
2039                     context_attach_surface_fbo(context, GL_FRAMEBUFFER_EXT, 0, target);
2040                     context_attach_depth_stencil_fbo(context, GL_FRAMEBUFFER_EXT, NULL, FALSE);
2041                     LEAVE_GL();
2042                 } else {
2043                     ENTER_GL();
2044                     context_bind_fbo(context, GL_FRAMEBUFFER_EXT, NULL);
2045                     LEAVE_GL();
2046                 }
2047                 context->draw_buffer_dirty = TRUE;
2048             }
2049             if (context->draw_buffer_dirty) {
2050                 context_apply_draw_buffer(context, TRUE);
2051                 if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) {
2052                     context->draw_buffer_dirty = FALSE;
2053                 }
2054             }
2055             break;
2056
2057         default:
2058             break;
2059     }
2060
2061     switch(usage) {
2062         case CTXUSAGE_RESOURCELOAD:
2063             /* This does not require any special states to be set up */
2064             break;
2065
2066         case CTXUSAGE_CLEAR:
2067             if(context->last_was_blit) {
2068                 This->frag_pipe->enable_extension((IWineD3DDevice *) This, TRUE);
2069             }
2070
2071             /* Blending and clearing should be orthogonal, but tests on the nvidia driver show that disabling
2072              * blending when clearing improves the clearing performance incredibly.
2073              */
2074             ENTER_GL();
2075             glDisable(GL_BLEND);
2076             LEAVE_GL();
2077             Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
2078
2079             ENTER_GL();
2080             glEnable(GL_SCISSOR_TEST);
2081             checkGLcall("glEnable GL_SCISSOR_TEST");
2082             LEAVE_GL();
2083             context->last_was_blit = FALSE;
2084             Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE), StateTable);
2085             Context_MarkStateDirty(context, STATE_SCISSORRECT, StateTable);
2086             break;
2087
2088         case CTXUSAGE_DRAWPRIM:
2089             /* This needs all dirty states applied */
2090             if(context->last_was_blit) {
2091                 This->frag_pipe->enable_extension((IWineD3DDevice *) This, TRUE);
2092             }
2093
2094             IWineD3DDeviceImpl_FindTexUnitMap(This);
2095
2096             ENTER_GL();
2097             for(i=0; i < context->numDirtyEntries; i++) {
2098                 dirtyState = context->dirtyArray[i];
2099                 idx = dirtyState >> 5;
2100                 shift = dirtyState & 0x1f;
2101                 context->isStateDirty[idx] &= ~(1 << shift);
2102                 StateTable[dirtyState].apply(dirtyState, This->stateBlock, context);
2103             }
2104             LEAVE_GL();
2105             context->numDirtyEntries = 0; /* This makes the whole list clean */
2106             context->last_was_blit = FALSE;
2107             break;
2108
2109         case CTXUSAGE_BLIT:
2110             SetupForBlit(This, context,
2111                          ((IWineD3DSurfaceImpl *)target)->currentDesc.Width,
2112                          ((IWineD3DSurfaceImpl *)target)->currentDesc.Height);
2113             break;
2114
2115         default:
2116             FIXME("Unexpected context usage requested\n");
2117     }
2118
2119     return context;
2120 }