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 flags, GLuint rb)
 107 {
 108     if (flags & WINED3D_FBO_ENTRY_FLAG_DEPTH)
 109     {
 110         gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rb);
 111         checkGLcall("glFramebufferRenderbuffer()");
 112     }
 113
 114     if (flags & WINED3D_FBO_ENTRY_FLAG_STENCIL)
 115     {
 116         gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rb);
 117         checkGLcall("glFramebufferRenderbuffer()");
 118     }
 119 }
 120
 121 static void context_attach_gl_texture_fbo(struct wined3d_context *context,
 122         GLenum fbo_target, GLenum attachment, const struct wined3d_fbo_resource *resource)
 123 {
 124     const struct wined3d_gl_info *gl_info = context->gl_info;
 125
 126     if (!resource)
 127     {
 128         gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, attachment, GL_TEXTURE_2D, 0, 0);
 129         checkGLcall("glFramebufferTexture2D()");
 130     }
 131     else if (resource->target == GL_TEXTURE_2D_ARRAY)
 132     {
 133         if (!gl_info->fbo_ops.glFramebufferTextureLayer)
 134         {
 135             FIXME("OpenGL implementation doesn't support glFramebufferTextureLayer().\n");
 136             return;
 137         }
 138
 139         gl_info->fbo_ops.glFramebufferTextureLayer(fbo_target, attachment,
 140                 resource->object, resource->level, resource->layer);
 141         checkGLcall("glFramebufferTextureLayer()");
 142     }
 143     else
 144     {
 145         gl_info->fbo_ops.glFramebufferTexture2D(fbo_target, attachment,
 146                 resource->target, resource->object, resource->level);
 147         checkGLcall("glFramebufferTexture2D()");
 148     }
 149 }
 150
 151 /* Context activation is done by the caller. */
 152 static void context_attach_depth_stencil_fbo(struct wined3d_context *context,
 153         GLenum fbo_target, const struct wined3d_fbo_resource *resource, BOOL rb_namespace,
 154         DWORD flags)
 155 {
 156     const struct wined3d_gl_info *gl_info = context->gl_info;
 157
 158     if (resource->object)
 159     {
 160         TRACE("Attach depth stencil %u.\n", resource->object);
 161
 162         if (rb_namespace)
 163         {
 164             context_attach_depth_stencil_rb(gl_info, fbo_target,
 165                     flags, resource->object);
 166         }
 167         else
 168         {
 169             if (flags & WINED3D_FBO_ENTRY_FLAG_DEPTH)
 170                 context_attach_gl_texture_fbo(context, fbo_target, GL_DEPTH_ATTACHMENT, resource);
 171
 172             if (flags & WINED3D_FBO_ENTRY_FLAG_STENCIL)
 173                 context_attach_gl_texture_fbo(context, fbo_target, GL_STENCIL_ATTACHMENT, resource);
 174         }
 175
 176         if (!(flags & WINED3D_FBO_ENTRY_FLAG_DEPTH))
 177             context_attach_gl_texture_fbo(context, fbo_target, GL_DEPTH_ATTACHMENT, NULL);
 178
 179         if (!(flags & WINED3D_FBO_ENTRY_FLAG_STENCIL))
 180             context_attach_gl_texture_fbo(context, fbo_target, GL_STENCIL_ATTACHMENT, NULL);
 181     }
 182     else
 183     {
 184         TRACE("Attach depth stencil 0.\n");
 185
 186         context_attach_gl_texture_fbo(context, fbo_target, GL_DEPTH_ATTACHMENT, NULL);
 187         context_attach_gl_texture_fbo(context, fbo_target, GL_STENCIL_ATTACHMENT, NULL);
 188     }
 189 }
 190
 191 /* Context activation is done by the caller. */
 192 static void context_attach_surface_fbo(struct wined3d_context *context,
 193         GLenum fbo_target, DWORD idx, const struct wined3d_fbo_resource *resource, BOOL rb_namespace)
 194 {
 195     const struct wined3d_gl_info *gl_info = context->gl_info;
 196
 197     TRACE("Attach GL object %u to %u.\n", resource->object, idx);
 198
 199     if (resource->object)
 200     {
 201
 202         if (rb_namespace)
 203         {
 204             gl_info->fbo_ops.glFramebufferRenderbuffer(fbo_target, GL_COLOR_ATTACHMENT0 + idx,
 205                     GL_RENDERBUFFER, resource->object);
 206             checkGLcall("glFramebufferRenderbuffer()");
 207         }
 208         else
 209         {
 210             context_attach_gl_texture_fbo(context, fbo_target, GL_COLOR_ATTACHMENT0 + idx, resource);
 211         }
 212     }
 213     else
 214     {
 215         context_attach_gl_texture_fbo(context, fbo_target, GL_COLOR_ATTACHMENT0 + idx, NULL);
 216     }
 217 }
 218
 219 static void context_dump_fbo_attachment(const struct wined3d_gl_info *gl_info, GLenum target,
 220         GLenum attachment)
 221 {
 222     static const struct
 223     {
 224         GLenum target;
 225         GLenum binding;
 226         const char *str;
 227         enum wined3d_gl_extension extension;
 228     }
 229     texture_type[] =
 230     {
 231         {GL_TEXTURE_2D,            GL_TEXTURE_BINDING_2D,            "2d",        WINED3D_GL_EXT_NONE},
 232         {GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_BINDING_RECTANGLE_ARB, "rectangle", ARB_TEXTURE_RECTANGLE},
 233         {GL_TEXTURE_2D_ARRAY,      GL_TEXTURE_BINDING_2D_ARRAY,      "2d-array",  EXT_TEXTURE_ARRAY},
 234     };
 235
 236     GLint type, name, samples, width, height, old_texture, level, face, fmt, tex_target;
 237
 238     gl_info->fbo_ops.glGetFramebufferAttachmentParameteriv(target, attachment,
 239             GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, &name);
 240     gl_info->fbo_ops.glGetFramebufferAttachmentParameteriv(target, attachment,
 241             GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &type);
 242
 243     if (type == GL_RENDERBUFFER)
 244     {
 245         gl_info->fbo_ops.glBindRenderbuffer(GL_RENDERBUFFER, name);
 246         gl_info->fbo_ops.glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width);
 247         gl_info->fbo_ops.glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height);
 248         if (gl_info->limits.samples > 1)
 249             gl_info->fbo_ops.glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_SAMPLES, &samples);
 250         else
 251             samples = 1;
 252         gl_info->fbo_ops.glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_INTERNAL_FORMAT, &fmt);
 253         FIXME("    %s: renderbuffer %d, %dx%d, %d samples, format %#x.\n",
 254                 debug_fboattachment(attachment), name, width, height, samples, fmt);
 255     }
 256     else if (type == GL_TEXTURE)
 257     {
 258         const char *tex_type_str;
 259
 260         gl_info->fbo_ops.glGetFramebufferAttachmentParameteriv(target, attachment,
 261                 GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL, &level);
 262         gl_info->fbo_ops.glGetFramebufferAttachmentParameteriv(target, attachment,
 263                 GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE, &face);
 264
 265         if (face)
 266         {
 267             gl_info->gl_ops.gl.p_glGetIntegerv(GL_TEXTURE_BINDING_CUBE_MAP, &old_texture);
 268
 269             glBindTexture(GL_TEXTURE_CUBE_MAP, name);
 270             glGetTexLevelParameteriv(face, level, GL_TEXTURE_INTERNAL_FORMAT, &fmt);
 271             glGetTexLevelParameteriv(face, level, GL_TEXTURE_WIDTH, &width);
 272             glGetTexLevelParameteriv(face, level, GL_TEXTURE_HEIGHT, &height);
 273
 274             tex_target = GL_TEXTURE_CUBE_MAP;
 275             tex_type_str = "cube";
 276         }
 277         else
 278         {
 279             unsigned int i;
 280
 281             tex_type_str = NULL;
 282             for (i = 0; i < sizeof(texture_type) / sizeof(*texture_type); ++i)
 283             {
 284                 if (!gl_info->supported[texture_type[i].extension])
 285                     continue;
 286
 287                 gl_info->gl_ops.gl.p_glGetIntegerv(texture_type[i].binding, &old_texture);
 288                 while (gl_info->gl_ops.gl.p_glGetError());
 289
 290                 glBindTexture(texture_type[i].target, name);
 291                 if (!gl_info->gl_ops.gl.p_glGetError())
 292                 {
 293                     tex_target = texture_type[i].target;
 294                     tex_type_str = texture_type[i].str;
 295                     break;
 296                 }
 297                 glBindTexture(texture_type[i].target, old_texture);
 298             }
 299             if (!tex_type_str)
 300             {
 301                 FIXME("Cannot find type of texture %d.\n", name);
 302                 return;
 303             }
 304
 305             glGetTexLevelParameteriv(tex_target, level, GL_TEXTURE_INTERNAL_FORMAT, &fmt);
 306             glGetTexLevelParameteriv(tex_target, level, GL_TEXTURE_WIDTH, &width);
 307             glGetTexLevelParameteriv(tex_target, level, GL_TEXTURE_HEIGHT, &height);
 308         }
 309
 310         FIXME("    %s: %s texture %d, %dx%d, format %#x.\n", debug_fboattachment(attachment),
 311                 tex_type_str, name, width, height, fmt);
 312
 313         glBindTexture(tex_target, old_texture);
 314         checkGLcall("Guess texture type");
 315     }
 316     else if (type == GL_NONE)
 317     {
 318         FIXME("    %s: NONE.\n", debug_fboattachment(attachment));
 319     }
 320     else
 321     {
 322         ERR("    %s: Unknown attachment %#x.\n", debug_fboattachment(attachment), type);
 323     }
 324 }
 325
 326 /* Context activation is done by the caller. */
 327 void context_check_fbo_status(const struct wined3d_context *context, GLenum target)
 328 {
 329     const struct wined3d_gl_info *gl_info = context->gl_info;
 330     GLenum status;
 331
 332     if (!FIXME_ON(d3d)) return;
 333
 334     status = gl_info->fbo_ops.glCheckFramebufferStatus(target);
 335     if (status == GL_FRAMEBUFFER_COMPLETE)
 336     {
 337         TRACE("FBO complete\n");
 338     }
 339     else
 340     {
 341         unsigned int i;
 342
 343         FIXME("FBO status %s (%#x)\n", debug_fbostatus(status), status);
 344
 345         if (!context->current_fbo)
 346         {
 347             ERR("FBO 0 is incomplete, driver bug?\n");
 348             return;
 349         }
 350
 351         context_dump_fbo_attachment(gl_info, target, GL_DEPTH_ATTACHMENT);
 352         context_dump_fbo_attachment(gl_info, target, GL_STENCIL_ATTACHMENT);
 353
 354         for (i = 0; i < gl_info->limits.buffers; ++i)
 355             context_dump_fbo_attachment(gl_info, target, GL_COLOR_ATTACHMENT0 + i);
 356         checkGLcall("Dump FBO attachments");
 357     }
 358 }
 359
 360 static inline DWORD context_generate_rt_mask(GLenum buffer)
 361 {
 362     /* Should take care of all the GL_FRONT/GL_BACK/GL_AUXi/GL_NONE... cases */
 363     return buffer ? (1u << 31) | buffer : 0;
 364 }
 365
 366 static inline DWORD context_generate_rt_mask_from_resource(struct wined3d_resource *resource)
 367 {
 368     if (resource->type != WINED3D_RTYPE_TEXTURE_2D)
 369     {
 370         FIXME("Not implemented for %s resources.\n", debug_d3dresourcetype(resource->type));
 371         return 0;
 372     }
 373
 374     return (1u << 31) | wined3d_texture_get_gl_buffer(texture_from_resource(resource));
 375 }
 376
 377 static inline void context_set_fbo_key_for_surface(const struct wined3d_context *context,
 378         struct wined3d_fbo_entry_key *key, UINT idx, struct wined3d_surface *surface,
 379         DWORD location)
 380 {
 381     if (!surface)
 382     {
 383         key->objects[idx].object = 0;
 384         key->objects[idx].target = 0;
 385         key->objects[idx].level = key->objects[idx].layer = 0;
 386     }
 387     else if (surface->current_renderbuffer)
 388     {
 389         key->objects[idx].object = surface->current_renderbuffer->id;
 390         key->objects[idx].target = 0;
 391         key->objects[idx].level = key->objects[idx].layer = 0;
 392         key->rb_namespace |= 1 << idx;
 393     }
 394     else
 395     {
 396         switch (location)
 397         {
 398             case WINED3D_LOCATION_TEXTURE_RGB:
 399                 key->objects[idx].object = surface_get_texture_name(surface, context, FALSE);
 400                 key->objects[idx].target = surface->texture_target;
 401                 key->objects[idx].level = surface->texture_level;
 402                 key->objects[idx].layer = surface->texture_layer;
 403                 break;
 404
 405             case WINED3D_LOCATION_TEXTURE_SRGB:
 406                 key->objects[idx].object = surface_get_texture_name(surface, context, TRUE);
 407                 key->objects[idx].target = surface->texture_target;
 408                 key->objects[idx].level = surface->texture_level;
 409                 key->objects[idx].layer = surface->texture_layer;
 410                 break;
 411
 412             case WINED3D_LOCATION_RB_MULTISAMPLE:
 413                 key->objects[idx].object = surface->container->rb_multisample;
 414                 key->objects[idx].target = 0;
 415                 key->objects[idx].level = key->objects[idx].layer = 0;
 416                 key->rb_namespace |= 1 << idx;
 417                 break;
 418
 419             case WINED3D_LOCATION_RB_RESOLVED:
 420                 key->objects[idx].object = surface->container->rb_resolved;
 421                 key->objects[idx].target = 0;
 422                 key->objects[idx].level = key->objects[idx].layer = 0;
 423                 key->rb_namespace |= 1 << idx;
 424                 break;
 425         }
 426     }
 427 }
 428
 429 static void context_generate_fbo_key(const struct wined3d_context *context,
 430         struct wined3d_fbo_entry_key *key, struct wined3d_surface **render_targets,
 431         struct wined3d_surface *depth_stencil, DWORD color_location,
 432         DWORD ds_location)
 433 {
 434     UINT i;
 435
 436     key->rb_namespace = 0;
 437     context_set_fbo_key_for_surface(context, key, 0, depth_stencil, ds_location);
 438
 439     for (i = 0; i < context->gl_info->limits.buffers; ++i)
 440         context_set_fbo_key_for_surface(context, key, i + 1, render_targets[i], color_location);
 441 }
 442
 443 static struct fbo_entry *context_create_fbo_entry(const struct wined3d_context *context,
 444         struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil,
 445         DWORD color_location, DWORD ds_location)
 446 {
 447     const struct wined3d_gl_info *gl_info = context->gl_info;
 448     struct fbo_entry *entry;
 449     UINT object_count = gl_info->limits.buffers + 1;
 450
 451     entry = HeapAlloc(GetProcessHeap(), 0,
 452             FIELD_OFFSET(struct fbo_entry, key.objects[object_count]));
 453     memset(&entry->key, 0, FIELD_OFFSET(struct wined3d_fbo_entry_key, objects[object_count]));
 454     context_generate_fbo_key(context, &entry->key, render_targets, depth_stencil, color_location, ds_location);
 455     entry->flags = 0;
 456     if (depth_stencil)
 457     {
 458         if (depth_stencil->container->resource.format_flags & WINED3DFMT_FLAG_DEPTH)
 459             entry->flags |= WINED3D_FBO_ENTRY_FLAG_DEPTH;
 460         if (depth_stencil->container->resource.format_flags & WINED3DFMT_FLAG_STENCIL)
 461             entry->flags |= WINED3D_FBO_ENTRY_FLAG_STENCIL;
 462     }
 463     entry->rt_mask = context_generate_rt_mask(GL_COLOR_ATTACHMENT0);
 464     gl_info->fbo_ops.glGenFramebuffers(1, &entry->id);
 465     checkGLcall("glGenFramebuffers()");
 466     TRACE("Created FBO %u.\n", entry->id);
 467
 468     return entry;
 469 }
 470
 471 /* Context activation is done by the caller. */
 472 static void context_reuse_fbo_entry(struct wined3d_context *context, GLenum target,
 473         struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil,
 474         DWORD color_location, DWORD ds_location, struct fbo_entry *entry)
 475 {
 476     const struct wined3d_gl_info *gl_info = context->gl_info;
 477
 478     context_bind_fbo(context, target, entry->id);
 479     context_clean_fbo_attachments(gl_info, target);
 480
 481     context_generate_fbo_key(context, &entry->key, render_targets, depth_stencil, color_location, ds_location);
 482     entry->flags = 0;
 483     if (depth_stencil)
 484     {
 485         if (depth_stencil->container->resource.format_flags & WINED3DFMT_FLAG_DEPTH)
 486             entry->flags |= WINED3D_FBO_ENTRY_FLAG_DEPTH;
 487         if (depth_stencil->container->resource.format_flags & WINED3DFMT_FLAG_STENCIL)
 488             entry->flags |= WINED3D_FBO_ENTRY_FLAG_STENCIL;
 489     }
 490 }
 491
 492 /* Context activation is done by the caller. */
 493 static void context_destroy_fbo_entry(struct wined3d_context *context, struct fbo_entry *entry)
 494 {
 495     if (entry->id)
 496     {
 497         TRACE("Destroy FBO %u.\n", entry->id);
 498         context_destroy_fbo(context, entry->id);
 499     }
 500     --context->fbo_entry_count;
 501     list_remove(&entry->entry);
 502     HeapFree(GetProcessHeap(), 0, entry);
 503 }
 504
 505 /* Context activation is done by the caller. */
 506 static struct fbo_entry *context_find_fbo_entry(struct wined3d_context *context, GLenum target,
 507         struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil,
 508         DWORD color_location, DWORD ds_location)
 509 {
 510     const struct wined3d_gl_info *gl_info = context->gl_info;
 511     unsigned int object_count = gl_info->limits.buffers + 1;
 512     struct wined3d_texture *rt_texture, *ds_texture;
 513     struct fbo_entry *entry;
 514     unsigned int i;
 515
 516     if (depth_stencil && render_targets[0])
 517     {
 518         rt_texture = render_targets[0]->container;
 519         ds_texture = depth_stencil->container;
 520
 521         if (wined3d_texture_get_level_width(ds_texture, depth_stencil->texture_level)
 522                 < wined3d_texture_get_level_width(rt_texture, render_targets[0]->texture_level)
 523                 || wined3d_texture_get_level_height(ds_texture, depth_stencil->texture_level)
 524                 < wined3d_texture_get_level_height(rt_texture, render_targets[0]->texture_level))
 525         {
 526             WARN("Depth stencil is smaller than the primary color buffer, disabling.\n");
 527             depth_stencil = NULL;
 528         }
 529         else if (ds_texture->resource.multisample_type != rt_texture->resource.multisample_type
 530                 || ds_texture->resource.multisample_quality != rt_texture->resource.multisample_quality)
 531         {
 532             WARN("Color multisample type %u and quality %u, depth stencil has %u and %u, disabling ds buffer.\n",
 533                     rt_texture->resource.multisample_type, rt_texture->resource.multisample_quality,
 534                     ds_texture->resource.multisample_type, ds_texture->resource.multisample_quality);
 535             depth_stencil = NULL;
 536         }
 537         else
 538             surface_set_compatible_renderbuffer(depth_stencil, render_targets[0]);
 539     }
 540
 541     context_generate_fbo_key(context, context->fbo_key, render_targets, depth_stencil, color_location,
 542             ds_location);
 543
 544     if (TRACE_ON(d3d))
 545     {
 546         TRACE("Dumping FBO attachments:\n");
 547         for (i = 0; i < gl_info->limits.buffers; ++i)
 548         {
 549             if (render_targets[i])
 550             {
 551                 rt_texture = render_targets[i]->container;
 552                 TRACE("    Color attachment %u: %p format %s, %s %u, %ux%u, %u samples.\n",
 553                         i, render_targets[i], debug_d3dformat(rt_texture->resource.format->id),
 554                         context->fbo_key->rb_namespace & (1 << (i + 1)) ? "renderbuffer" : "texure",
 555                         context->fbo_key->objects[i + 1].object,
 556                         wined3d_texture_get_level_pow2_width(rt_texture, render_targets[i]->texture_level),
 557                         wined3d_texture_get_level_pow2_height(rt_texture, render_targets[i]->texture_level),
 558                         rt_texture->resource.multisample_type);
 559             }
 560         }
 561         if (depth_stencil)
 562         {
 563             ds_texture = depth_stencil->container;
 564             TRACE("    Depth attachment: %p format %s, %s %u, %ux%u, %u samples.\n",
 565                     depth_stencil, debug_d3dformat(ds_texture->resource.format->id),
 566                     context->fbo_key->rb_namespace & (1 << 0) ? "renderbuffer" : "texure",
 567                     context->fbo_key->objects[0].object,
 568                     wined3d_texture_get_level_pow2_width(ds_texture, depth_stencil->texture_level),
 569                     wined3d_texture_get_level_pow2_height(ds_texture, depth_stencil->texture_level),
 570                     ds_texture->resource.multisample_type);
 571         }
 572     }
 573
 574     LIST_FOR_EACH_ENTRY(entry, &context->fbo_list, struct fbo_entry, entry)
 575     {
 576         if (memcmp(context->fbo_key, &entry->key, FIELD_OFFSET(struct wined3d_fbo_entry_key, objects[object_count])))
 577             continue;
 578
 579         list_remove(&entry->entry);
 580         list_add_head(&context->fbo_list, &entry->entry);
 581         return entry;
 582     }
 583
 584     if (context->fbo_entry_count < WINED3D_MAX_FBO_ENTRIES)
 585     {
 586         entry = context_create_fbo_entry(context, render_targets, depth_stencil, color_location, ds_location);
 587         list_add_head(&context->fbo_list, &entry->entry);
 588         ++context->fbo_entry_count;
 589     }
 590     else
 591     {
 592         entry = LIST_ENTRY(list_tail(&context->fbo_list), struct fbo_entry, entry);
 593         context_reuse_fbo_entry(context, target, render_targets, depth_stencil, color_location, ds_location, entry);
 594         list_remove(&entry->entry);
 595         list_add_head(&context->fbo_list, &entry->entry);
 596     }
 597
 598     return entry;
 599 }
 600
 601 /* Context activation is done by the caller. */
 602 static void context_apply_fbo_entry(struct wined3d_context *context, GLenum target, struct fbo_entry *entry)
 603 {
 604     const struct wined3d_gl_info *gl_info = context->gl_info;
 605     unsigned int i;
 606     GLuint read_binding, draw_binding;
 607
 608     if (entry->flags & WINED3D_FBO_ENTRY_FLAG_ATTACHED)
 609     {
 610         context_bind_fbo(context, target, entry->id);
 611         return;
 612     }
 613
 614     read_binding = context->fbo_read_binding;
 615     draw_binding = context->fbo_draw_binding;
 616     context_bind_fbo(context, GL_FRAMEBUFFER, entry->id);
 617
 618     /* Apply render targets */
 619     for (i = 0; i < gl_info->limits.buffers; ++i)
 620     {
 621         context_attach_surface_fbo(context, target, i, &entry->key.objects[i + 1],
 622                 entry->key.rb_namespace & (1 << (i + 1)));
 623     }
 624
 625     context_attach_depth_stencil_fbo(context, target, &entry->key.objects[0],
 626             entry->key.rb_namespace & 0x1, entry->flags);
 627
 628     /* Set valid read and draw buffer bindings to satisfy pedantic pre-ES2_compatibility
 629      * GL contexts requirements. */
 630     gl_info->gl_ops.gl.p_glReadBuffer(GL_NONE);
 631     context_set_draw_buffer(context, GL_NONE);
 632     if (target != GL_FRAMEBUFFER)
 633     {
 634         if (target == GL_READ_FRAMEBUFFER)
 635             context_bind_fbo(context, GL_DRAW_FRAMEBUFFER, draw_binding);
 636         else
 637             context_bind_fbo(context, GL_READ_FRAMEBUFFER, read_binding);
 638     }
 639
 640     entry->flags |= WINED3D_FBO_ENTRY_FLAG_ATTACHED;
 641 }
 642
 643 /* Context activation is done by the caller. */
 644 static void context_apply_fbo_state(struct wined3d_context *context, GLenum target,
 645         struct wined3d_surface **render_targets, struct wined3d_surface *depth_stencil,
 646         DWORD color_location, DWORD ds_location)
 647 {
 648     struct fbo_entry *entry, *entry2;
 649
 650     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
 651     {
 652         context_destroy_fbo_entry(context, entry);
 653     }
 654
 655     if (context->rebind_fbo)
 656     {
 657         context_bind_fbo(context, GL_FRAMEBUFFER, 0);
 658         context->rebind_fbo = FALSE;
 659     }
 660
 661     if (color_location == WINED3D_LOCATION_DRAWABLE)
 662     {
 663         context->current_fbo = NULL;
 664         context_bind_fbo(context, target, 0);
 665     }
 666     else
 667     {
 668         context->current_fbo = context_find_fbo_entry(context, target, render_targets, depth_stencil,
 669                 color_location, ds_location);
 670         context_apply_fbo_entry(context, target, context->current_fbo);
 671     }
 672 }
 673
 674 /* Context activation is done by the caller. */
 675 void context_apply_fbo_state_blit(struct wined3d_context *context, GLenum target,
 676         struct wined3d_surface *render_target, struct wined3d_surface *depth_stencil, DWORD location)
 677 {
 678     UINT clear_size = (context->gl_info->limits.buffers - 1) * sizeof(*context->blit_targets);
 679
 680     context->blit_targets[0] = render_target;
 681     if (clear_size)
 682         memset(&context->blit_targets[1], 0, clear_size);
 683     context_apply_fbo_state(context, target, context->blit_targets, depth_stencil, location, location);
 684 }
 685
 686 /* Context activation is done by the caller. */
 687 void context_alloc_occlusion_query(struct wined3d_context *context, struct wined3d_occlusion_query *query)
 688 {
 689     const struct wined3d_gl_info *gl_info = context->gl_info;
 690
 691     if (context->free_occlusion_query_count)
 692     {
 693         query->id = context->free_occlusion_queries[--context->free_occlusion_query_count];
 694     }
 695     else
 696     {
 697         if (gl_info->supported[ARB_OCCLUSION_QUERY])
 698         {
 699             GL_EXTCALL(glGenQueries(1, &query->id));
 700             checkGLcall("glGenQueries");
 701
 702             TRACE("Allocated occlusion query %u in context %p.\n", query->id, context);
 703         }
 704         else
 705         {
 706             WARN("Occlusion queries not supported, not allocating query id.\n");
 707             query->id = 0;
 708         }
 709     }
 710
 711     query->context = context;
 712     list_add_head(&context->occlusion_queries, &query->entry);
 713 }
 714
 715 void context_free_occlusion_query(struct wined3d_occlusion_query *query)
 716 {
 717     struct wined3d_context *context = query->context;
 718
 719     list_remove(&query->entry);
 720     query->context = NULL;
 721
 722     if (context->free_occlusion_query_count >= context->free_occlusion_query_size - 1)
 723     {
 724         UINT new_size = context->free_occlusion_query_size << 1;
 725         GLuint *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_occlusion_queries,
 726                 new_size * sizeof(*context->free_occlusion_queries));
 727
 728         if (!new_data)
 729         {
 730             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->id, context);
 731             return;
 732         }
 733
 734         context->free_occlusion_query_size = new_size;
 735         context->free_occlusion_queries = new_data;
 736     }
 737
 738     context->free_occlusion_queries[context->free_occlusion_query_count++] = query->id;
 739 }
 740
 741 /* Context activation is done by the caller. */
 742 void context_alloc_event_query(struct wined3d_context *context, struct wined3d_event_query *query)
 743 {
 744     const struct wined3d_gl_info *gl_info = context->gl_info;
 745
 746     if (context->free_event_query_count)
 747     {
 748         query->object = context->free_event_queries[--context->free_event_query_count];
 749     }
 750     else
 751     {
 752         if (gl_info->supported[ARB_SYNC])
 753         {
 754             /* Using ARB_sync, not much to do here. */
 755             query->object.sync = NULL;
 756             TRACE("Allocated event query %p in context %p.\n", query->object.sync, context);
 757         }
 758         else if (gl_info->supported[APPLE_FENCE])
 759         {
 760             GL_EXTCALL(glGenFencesAPPLE(1, &query->object.id));
 761             checkGLcall("glGenFencesAPPLE");
 762
 763             TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
 764         }
 765         else if(gl_info->supported[NV_FENCE])
 766         {
 767             GL_EXTCALL(glGenFencesNV(1, &query->object.id));
 768             checkGLcall("glGenFencesNV");
 769
 770             TRACE("Allocated event query %u in context %p.\n", query->object.id, context);
 771         }
 772         else
 773         {
 774             WARN("Event queries not supported, not allocating query id.\n");
 775             query->object.id = 0;
 776         }
 777     }
 778
 779     query->context = context;
 780     list_add_head(&context->event_queries, &query->entry);
 781 }
 782
 783 void context_free_event_query(struct wined3d_event_query *query)
 784 {
 785     struct wined3d_context *context = query->context;
 786
 787     list_remove(&query->entry);
 788     query->context = NULL;
 789
 790     if (context->free_event_query_count >= context->free_event_query_size - 1)
 791     {
 792         UINT new_size = context->free_event_query_size << 1;
 793         union wined3d_gl_query_object *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_event_queries,
 794                 new_size * sizeof(*context->free_event_queries));
 795
 796         if (!new_data)
 797         {
 798             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->object.id, context);
 799             return;
 800         }
 801
 802         context->free_event_query_size = new_size;
 803         context->free_event_queries = new_data;
 804     }
 805
 806     context->free_event_queries[context->free_event_query_count++] = query->object;
 807 }
 808
 809 /* Context activation is done by the caller. */
 810 void context_alloc_timestamp_query(struct wined3d_context *context, struct wined3d_timestamp_query *query)
 811 {
 812     const struct wined3d_gl_info *gl_info = context->gl_info;
 813
 814     if (context->free_timestamp_query_count)
 815     {
 816         query->id = context->free_timestamp_queries[--context->free_timestamp_query_count];
 817     }
 818     else
 819     {
 820         GL_EXTCALL(glGenQueries(1, &query->id));
 821         checkGLcall("glGenQueries");
 822
 823         TRACE("Allocated timestamp query %u in context %p.\n", query->id, context);
 824     }
 825
 826     query->context = context;
 827     list_add_head(&context->timestamp_queries, &query->entry);
 828 }
 829
 830 void context_free_timestamp_query(struct wined3d_timestamp_query *query)
 831 {
 832     struct wined3d_context *context = query->context;
 833
 834     list_remove(&query->entry);
 835     query->context = NULL;
 836
 837     if (context->free_timestamp_query_count >= context->free_timestamp_query_size - 1)
 838     {
 839         UINT new_size = context->free_timestamp_query_size << 1;
 840         GLuint *new_data = HeapReAlloc(GetProcessHeap(), 0, context->free_timestamp_queries,
 841                 new_size * sizeof(*context->free_timestamp_queries));
 842
 843         if (!new_data)
 844         {
 845             ERR("Failed to grow free list, leaking query %u in context %p.\n", query->id, context);
 846             return;
 847         }
 848
 849         context->free_timestamp_query_size = new_size;
 850         context->free_timestamp_queries = new_data;
 851     }
 852
 853     context->free_timestamp_queries[context->free_timestamp_query_count++] = query->id;
 854 }
 855
 856 typedef void (context_fbo_entry_func_t)(struct wined3d_context *context, struct fbo_entry *entry);
 857
 858 static void context_enum_fbo_entries(const struct wined3d_device *device,
 859         GLuint name, BOOL rb_namespace, context_fbo_entry_func_t *callback)
 860 {
 861     UINT i;
 862
 863     for (i = 0; i < device->context_count; ++i)
 864     {
 865         struct wined3d_context *context = device->contexts[i];
 866         const struct wined3d_gl_info *gl_info = context->gl_info;
 867         struct fbo_entry *entry, *entry2;
 868
 869         LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
 870         {
 871             UINT j;
 872
 873             for (j = 0; j < gl_info->limits.buffers + 1; ++j)
 874             {
 875                 if (entry->key.objects[j].object == name
 876                         && !(entry->key.rb_namespace & (1 << j)) == !rb_namespace)
 877                 {
 878                     callback(context, entry);
 879                     break;
 880                 }
 881             }
 882         }
 883     }
 884 }
 885
 886 static void context_queue_fbo_entry_destruction(struct wined3d_context *context, struct fbo_entry *entry)
 887 {
 888     list_remove(&entry->entry);
 889     list_add_head(&context->fbo_destroy_list, &entry->entry);
 890 }
 891
 892 void context_resource_released(const struct wined3d_device *device,
 893         struct wined3d_resource *resource, enum wined3d_resource_type type)
 894 {
 895     struct wined3d_texture *texture;
 896     UINT i;
 897
 898     if (!device->d3d_initialized)
 899         return;
 900
 901     switch (type)
 902     {
 903         case WINED3D_RTYPE_TEXTURE_2D:
 904         case WINED3D_RTYPE_TEXTURE_3D:
 905             texture = texture_from_resource(resource);
 906
 907             for (i = 0; i < device->context_count; ++i)
 908             {
 909                 struct wined3d_context *context = device->contexts[i];
 910                 if (context->current_rt.texture == texture)
 911                 {
 912                     context->current_rt.texture = NULL;
 913                     context->current_rt.sub_resource_idx = 0;
 914                 }
 915             }
 916             break;
 917
 918         default:
 919             break;
 920     }
 921 }
 922
 923 void context_gl_resource_released(struct wined3d_device *device,
 924         GLuint name, BOOL rb_namespace)
 925 {
 926     context_enum_fbo_entries(device, name, rb_namespace, context_queue_fbo_entry_destruction);
 927 }
 928
 929 void context_surface_update(struct wined3d_context *context, const struct wined3d_surface *surface)
 930 {
 931     const struct wined3d_gl_info *gl_info = context->gl_info;
 932     struct fbo_entry *entry = context->current_fbo;
 933     unsigned int i;
 934
 935     if (!entry || context->rebind_fbo) return;
 936
 937     for (i = 0; i < gl_info->limits.buffers + 1; ++i)
 938     {
 939         if (surface->container->texture_rgb.name == entry->key.objects[i].object
 940                 || surface->container->texture_srgb.name == entry->key.objects[i].object)
 941         {
 942             TRACE("Updated surface %p is bound as attachment %u to the current FBO.\n", surface, i);
 943             context->rebind_fbo = TRUE;
 944             return;
 945         }
 946     }
 947 }
 948
 949 static BOOL context_restore_pixel_format(struct wined3d_context *ctx)
 950 {
 951     const struct wined3d_gl_info *gl_info = ctx->gl_info;
 952     BOOL ret = FALSE;
 953
 954     if (ctx->restore_pf && IsWindow(ctx->restore_pf_win))
 955     {
 956         if (ctx->gl_info->supported[WGL_WINE_PIXEL_FORMAT_PASSTHROUGH])
 957         {
 958             HDC dc = GetDCEx(ctx->restore_pf_win, 0, DCX_USESTYLE | DCX_CACHE);
 959             if (dc)
 960             {
 961                 if (!(ret = GL_EXTCALL(wglSetPixelFormatWINE(dc, ctx->restore_pf))))
 962                 {
 963                     ERR("wglSetPixelFormatWINE failed to restore pixel format %d on window %p.\n",
 964                             ctx->restore_pf, ctx->restore_pf_win);
 965                 }
 966                 ReleaseDC(ctx->restore_pf_win, dc);
 967             }
 968         }
 969         else
 970         {
 971             ERR("can't restore pixel format %d on window %p\n", ctx->restore_pf, ctx->restore_pf_win);
 972         }
 973     }
 974
 975     ctx->restore_pf = 0;
 976     ctx->restore_pf_win = NULL;
 977     return ret;
 978 }
 979
 980 static BOOL context_set_pixel_format(struct wined3d_context *context, HDC dc, BOOL private, int format)
 981 {
 982     const struct wined3d_gl_info *gl_info = context->gl_info;
 983     int current;
 984
 985     if (dc == context->hdc && context->hdc_is_private && context->hdc_has_format)
 986         return TRUE;
 987
 988     current = gl_info->gl_ops.wgl.p_wglGetPixelFormat(dc);
 989     if (current == format) goto success;
 990
 991     if (!current)
 992     {
 993         if (!SetPixelFormat(dc, format, NULL))
 994         {
 995             /* This may also happen if the dc belongs to a destroyed window. */
 996             WARN("Failed to set pixel format %d on device context %p, last error %#x.\n",
 997                     format, dc, GetLastError());
 998             return FALSE;
 999         }
1000
1001         context->restore_pf = 0;
1002         context->restore_pf_win = private ? NULL : WindowFromDC(dc);
1003         goto success;
1004     }
1005
1006     /* By default WGL doesn't allow pixel format adjustments but we need it
1007      * here. For this reason there's a Wine specific wglSetPixelFormat()
1008      * which allows us to set the pixel format multiple times. Only use it
1009      * when really needed. */
1010     if (gl_info->supported[WGL_WINE_PIXEL_FORMAT_PASSTHROUGH])
1011     {
1012         HWND win;
1013
1014         if (!GL_EXTCALL(wglSetPixelFormatWINE(dc, format)))
1015         {
1016             ERR("wglSetPixelFormatWINE failed to set pixel format %d on device context %p.\n",
1017                     format, dc);
1018             return FALSE;
1019         }
1020
1021         win = private ? NULL : WindowFromDC(dc);
1022         if (win != context->restore_pf_win)
1023         {
1024             context_restore_pixel_format(context);
1025
1026             context->restore_pf = private ? 0 : current;
1027             context->restore_pf_win = win;
1028         }
1029
1030         goto success;
1031     }
1032
1033     /* OpenGL doesn't allow pixel format adjustments. Print an error and
1034      * continue using the old format. There's a big chance that the old
1035      * format works although with a performance hit and perhaps rendering
1036      * errors. */
1037     ERR("Unable to set pixel format %d on device context %p. Already using format %d.\n",
1038             format, dc, current);
1039     return TRUE;
1040
1041 success:
1042     if (dc == context->hdc && context->hdc_is_private)
1043         context->hdc_has_format = TRUE;
1044     return TRUE;
1045 }
1046
1047 static BOOL context_set_gl_context(struct wined3d_context *ctx)
1048 {
1049     struct wined3d_swapchain *swapchain = ctx->swapchain;
1050     BOOL backup = FALSE;
1051
1052     if (!context_set_pixel_format(ctx, ctx->hdc, ctx->hdc_is_private, ctx->pixel_format))
1053     {
1054         WARN("Failed to set pixel format %d on device context %p.\n",
1055                 ctx->pixel_format, ctx->hdc);
1056         backup = TRUE;
1057     }
1058
1059     if (backup || !wglMakeCurrent(ctx->hdc, ctx->glCtx))
1060     {
1061         HDC dc;
1062
1063         WARN("Failed to make GL context %p current on device context %p, last error %#x.\n",
1064                 ctx->glCtx, ctx->hdc, GetLastError());
1065         ctx->valid = 0;
1066         WARN("Trying fallback to the backup window.\n");
1067
1068         /* FIXME: If the context is destroyed it's no longer associated with
1069          * a swapchain, so we can't use the swapchain to get a backup dc. To
1070          * make this work windowless contexts would need to be handled by the
1071          * device. */
1072         if (ctx->destroyed)
1073         {
1074             FIXME("Unable to get backup dc for destroyed context %p.\n", ctx);
1075             context_set_current(NULL);
1076             return FALSE;
1077         }
1078
1079         if (!(dc = swapchain_get_backup_dc(swapchain)))
1080         {
1081             context_set_current(NULL);
1082             return FALSE;
1083         }
1084
1085         if (!context_set_pixel_format(ctx, dc, TRUE, ctx->pixel_format))
1086         {
1087             ERR("Failed to set pixel format %d on device context %p.\n",
1088                     ctx->pixel_format, dc);
1089             context_set_current(NULL);
1090             return FALSE;
1091         }
1092
1093         if (!wglMakeCurrent(dc, ctx->glCtx))
1094         {
1095             ERR("Fallback to backup window (dc %p) failed too, last error %#x.\n",
1096                     dc, GetLastError());
1097             context_set_current(NULL);
1098             return FALSE;
1099         }
1100
1101         ctx->valid = 1;
1102     }
1103     ctx->needs_set = 0;
1104     return TRUE;
1105 }
1106
1107 static void context_restore_gl_context(const struct wined3d_gl_info *gl_info, HDC dc, HGLRC gl_ctx)
1108 {
1109     if (!wglMakeCurrent(dc, gl_ctx))
1110     {
1111         ERR("Failed to restore GL context %p on device context %p, last error %#x.\n",
1112                 gl_ctx, dc, GetLastError());
1113         context_set_current(NULL);
1114     }
1115 }
1116
1117 static void context_update_window(struct wined3d_context *context)
1118 {
1119     if (context->win_handle == context->swapchain->win_handle)
1120         return;
1121
1122     TRACE("Updating context %p window from %p to %p.\n",
1123             context, context->win_handle, context->swapchain->win_handle);
1124
1125     if (context->hdc)
1126         wined3d_release_dc(context->win_handle, context->hdc);
1127
1128     context->win_handle = context->swapchain->win_handle;
1129     context->hdc_is_private = FALSE;
1130     context->hdc_has_format = FALSE;
1131     context->needs_set = 1;
1132     context->valid = 1;
1133
1134     if (!(context->hdc = GetDCEx(context->win_handle, 0, DCX_USESTYLE | DCX_CACHE)))
1135     {
1136         ERR("Failed to get a device context for window %p.\n", context->win_handle);
1137         context->valid = 0;
1138     }
1139 }
1140
1141 static void context_destroy_gl_resources(struct wined3d_context *context)
1142 {
1143     const struct wined3d_gl_info *gl_info = context->gl_info;
1144     struct wined3d_timestamp_query *timestamp_query;
1145     struct wined3d_occlusion_query *occlusion_query;
1146     struct wined3d_event_query *event_query;
1147     struct fbo_entry *entry, *entry2;
1148     HGLRC restore_ctx;
1149     HDC restore_dc;
1150     unsigned int i;
1151
1152     restore_ctx = wglGetCurrentContext();
1153     restore_dc = wglGetCurrentDC();
1154
1155     if (restore_ctx == context->glCtx)
1156         restore_ctx = NULL;
1157     else if (context->valid)
1158         context_set_gl_context(context);
1159
1160     LIST_FOR_EACH_ENTRY(timestamp_query, &context->timestamp_queries, struct wined3d_timestamp_query, entry)
1161     {
1162         if (context->valid)
1163             GL_EXTCALL(glDeleteQueries(1, &timestamp_query->id));
1164         timestamp_query->context = NULL;
1165     }
1166
1167     LIST_FOR_EACH_ENTRY(occlusion_query, &context->occlusion_queries, struct wined3d_occlusion_query, entry)
1168     {
1169         if (context->valid && gl_info->supported[ARB_OCCLUSION_QUERY])
1170             GL_EXTCALL(glDeleteQueries(1, &occlusion_query->id));
1171         occlusion_query->context = NULL;
1172     }
1173
1174     LIST_FOR_EACH_ENTRY(event_query, &context->event_queries, struct wined3d_event_query, entry)
1175     {
1176         if (context->valid)
1177         {
1178             if (gl_info->supported[ARB_SYNC])
1179             {
1180                 if (event_query->object.sync) GL_EXTCALL(glDeleteSync(event_query->object.sync));
1181             }
1182             else if (gl_info->supported[APPLE_FENCE]) GL_EXTCALL(glDeleteFencesAPPLE(1, &event_query->object.id));
1183             else if (gl_info->supported[NV_FENCE]) GL_EXTCALL(glDeleteFencesNV(1, &event_query->object.id));
1184         }
1185         event_query->context = NULL;
1186     }
1187
1188     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_destroy_list, struct fbo_entry, entry)
1189     {
1190         if (!context->valid) entry->id = 0;
1191         context_destroy_fbo_entry(context, entry);
1192     }
1193
1194     LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, &context->fbo_list, struct fbo_entry, entry)
1195     {
1196         if (!context->valid) entry->id = 0;
1197         context_destroy_fbo_entry(context, entry);
1198     }
1199
1200     if (context->valid)
1201     {
1202         if (context->dummy_arbfp_prog)
1203         {
1204             GL_EXTCALL(glDeleteProgramsARB(1, &context->dummy_arbfp_prog));
1205         }
1206
1207         if (gl_info->supported[ARB_TIMER_QUERY])
1208             GL_EXTCALL(glDeleteQueries(context->free_timestamp_query_count, context->free_timestamp_queries));
1209
1210         if (gl_info->supported[ARB_OCCLUSION_QUERY])
1211             GL_EXTCALL(glDeleteQueries(context->free_occlusion_query_count, context->free_occlusion_queries));
1212
1213         if (gl_info->supported[ARB_SYNC])
1214         {
1215             for (i = 0; i < context->free_event_query_count; ++i)
1216             {
1217                 GL_EXTCALL(glDeleteSync(context->free_event_queries[i].sync));
1218             }
1219         }
1220         else if (gl_info->supported[APPLE_FENCE])
1221         {
1222             for (i = 0; i < context->free_event_query_count; ++i)
1223             {
1224                 GL_EXTCALL(glDeleteFencesAPPLE(1, &context->free_event_queries[i].id));
1225             }
1226         }
1227         else if (gl_info->supported[NV_FENCE])
1228         {
1229             for (i = 0; i < context->free_event_query_count; ++i)
1230             {
1231                 GL_EXTCALL(glDeleteFencesNV(1, &context->free_event_queries[i].id));
1232             }
1233         }
1234
1235         checkGLcall("context cleanup");
1236     }
1237
1238     HeapFree(GetProcessHeap(), 0, context->free_timestamp_queries);
1239     HeapFree(GetProcessHeap(), 0, context->free_occlusion_queries);
1240     HeapFree(GetProcessHeap(), 0, context->free_event_queries);
1241
1242     context_restore_pixel_format(context);
1243     if (restore_ctx)
1244     {
1245         context_restore_gl_context(gl_info, restore_dc, restore_ctx);
1246     }
1247     else if (wglGetCurrentContext() && !wglMakeCurrent(NULL, NULL))
1248     {
1249         ERR("Failed to disable GL context.\n");
1250     }
1251
1252     wined3d_release_dc(context->win_handle, context->hdc);
1253
1254     if (!wglDeleteContext(context->glCtx))
1255     {
1256         DWORD err = GetLastError();
1257         ERR("wglDeleteContext(%p) failed, last error %#x.\n", context->glCtx, err);
1258     }
1259 }
1260
1261 DWORD context_get_tls_idx(void)
1262 {
1263     return wined3d_context_tls_idx;
1264 }
1265
1266 void context_set_tls_idx(DWORD idx)
1267 {
1268     wined3d_context_tls_idx = idx;
1269 }
1270
1271 struct wined3d_context *context_get_current(void)
1272 {
1273     return TlsGetValue(wined3d_context_tls_idx);
1274 }
1275
1276 BOOL context_set_current(struct wined3d_context *ctx)
1277 {
1278     struct wined3d_context *old = context_get_current();
1279
1280     if (old == ctx)
1281     {
1282         TRACE("Already using D3D context %p.\n", ctx);
1283         return TRUE;
1284     }
1285
1286     if (old)
1287     {
1288         if (old->destroyed)
1289         {
1290             TRACE("Switching away from destroyed context %p.\n", old);
1291             context_destroy_gl_resources(old);
1292             HeapFree(GetProcessHeap(), 0, (void *)old->gl_info);
1293             HeapFree(GetProcessHeap(), 0, old);
1294         }
1295         else
1296         {
1297             if (wglGetCurrentContext())
1298             {
1299                 TRACE("Flushing context %p before switching to %p.\n", old, ctx);
1300                 glFlush();
1301             }
1302             old->current = 0;
1303         }
1304     }
1305
1306     if (ctx)
1307     {
1308         if (!ctx->valid)
1309         {
1310             ERR("Trying to make invalid context %p current\n", ctx);
1311             return FALSE;
1312         }
1313
1314         TRACE("Switching to D3D context %p, GL context %p, device context %p.\n", ctx, ctx->glCtx, ctx->hdc);
1315         if (!context_set_gl_context(ctx))
1316             return FALSE;
1317         ctx->current = 1;
1318     }
1319     else if(wglGetCurrentContext())
1320     {
1321         TRACE("Clearing current D3D context.\n");
1322         if (!wglMakeCurrent(NULL, NULL))
1323         {
1324             DWORD err = GetLastError();
1325             ERR("Failed to clear current GL context, last error %#x.\n", err);
1326             TlsSetValue(wined3d_context_tls_idx, NULL);
1327             return FALSE;
1328         }
1329     }
1330
1331     return TlsSetValue(wined3d_context_tls_idx, ctx);
1332 }
1333
1334 void context_release(struct wined3d_context *context)
1335 {
1336     TRACE("Releasing context %p, level %u.\n", context, context->level);
1337
1338     if (WARN_ON(d3d))
1339     {
1340         if (!context->level)
1341             WARN("Context %p is not active.\n", context);
1342         else if (context != context_get_current())
1343             WARN("Context %p is not the current context.\n", context);
1344     }
1345
1346     if (!--context->level)
1347     {
1348         if (context_restore_pixel_format(context))
1349             context->needs_set = 1;
1350         if (context->restore_ctx)
1351         {
1352             TRACE("Restoring GL context %p on device context %p.\n", context->restore_ctx, context->restore_dc);
1353             context_restore_gl_context(context->gl_info, context->restore_dc, context->restore_ctx);
1354             context->restore_ctx = NULL;
1355             context->restore_dc = NULL;
1356         }
1357     }
1358 }
1359
1360 /* This is used when a context for render target A is active, but a separate context is
1361  * needed to access the WGL framebuffer for render target B. Re-acquire a context for rt
1362  * A to avoid breaking caller code. */
1363 void context_restore(struct wined3d_context *context, struct wined3d_surface *restore)
1364 {
1365     if (context->current_rt.texture != restore->container
1366             || context->current_rt.sub_resource_idx != surface_get_sub_resource_idx(restore))
1367     {
1368         context_release(context);
1369         context = context_acquire(restore->container->resource.device, restore);
1370     }
1371
1372     context_release(context);
1373 }
1374
1375 static void context_enter(struct wined3d_context *context)
1376 {
1377     TRACE("Entering context %p, level %u.\n", context, context->level + 1);
1378
1379     if (!context->level++)
1380     {
1381         const struct wined3d_context *current_context = context_get_current();
1382         HGLRC current_gl = wglGetCurrentContext();
1383
1384         if (current_gl && (!current_context || current_context->glCtx != current_gl))
1385         {
1386             TRACE("Another GL context (%p on device context %p) is already current.\n",
1387                     current_gl, wglGetCurrentDC());
1388             context->restore_ctx = current_gl;
1389             context->restore_dc = wglGetCurrentDC();
1390             context->needs_set = 1;
1391         }
1392         else if (!context->needs_set && !(context->hdc_is_private && context->hdc_has_format)
1393                     && context->pixel_format != context->gl_info->gl_ops.wgl.p_wglGetPixelFormat(context->hdc))
1394             context->needs_set = 1;
1395     }
1396 }
1397
1398 void context_invalidate_state(struct wined3d_context *context, DWORD state)
1399 {
1400     DWORD rep = context->state_table[state].representative;
1401     DWORD idx;
1402     BYTE shift;
1403
1404     if (isStateDirty(context, rep)) return;
1405
1406     context->dirtyArray[context->numDirtyEntries++] = rep;
1407     idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
1408     shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
1409     context->isStateDirty[idx] |= (1u << shift);
1410 }
1411
1412 /* This function takes care of wined3d pixel format selection. */
1413 static int context_choose_pixel_format(const struct wined3d_device *device, HDC hdc,
1414         const struct wined3d_format *color_format, const struct wined3d_format *ds_format,
1415         BOOL auxBuffers, BOOL findCompatible)
1416 {
1417     int iPixelFormat=0;
1418     unsigned int current_value;
1419     unsigned int cfg_count = device->adapter->cfg_count;
1420     unsigned int i;
1421
1422     TRACE("device %p, dc %p, color_format %s, ds_format %s, aux_buffers %#x, find_compatible %#x.\n",
1423             device, hdc, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id),
1424             auxBuffers, findCompatible);
1425
1426     current_value = 0;
1427     for (i = 0; i < cfg_count; ++i)
1428     {
1429         const struct wined3d_pixel_format *cfg = &device->adapter->cfgs[i];
1430         unsigned int value;
1431
1432         /* For now only accept RGBA formats. Perhaps some day we will
1433          * allow floating point formats for pbuffers. */
1434         if (cfg->iPixelType != WGL_TYPE_RGBA_ARB)
1435             continue;
1436         /* In window mode we need a window drawable format and double buffering. */
1437         if (!(cfg->windowDrawable && cfg->doubleBuffer))
1438             continue;
1439         if (cfg->redSize < color_format->red_size)
1440             continue;
1441         if (cfg->greenSize < color_format->green_size)
1442             continue;
1443         if (cfg->blueSize < color_format->blue_size)
1444             continue;
1445         if (cfg->alphaSize < color_format->alpha_size)
1446             continue;
1447         if (cfg->depthSize < ds_format->depth_size)
1448             continue;
1449         if (ds_format->stencil_size && cfg->stencilSize != ds_format->stencil_size)
1450             continue;
1451         /* Check multisampling support. */
1452         if (cfg->numSamples)
1453             continue;
1454
1455         value = 1;
1456         /* We try to locate a format which matches our requirements exactly. In case of
1457          * depth it is no problem to emulate 16-bit using e.g. 24-bit, so accept that. */
1458         if (cfg->depthSize == ds_format->depth_size)
1459             value += 1;
1460         if (cfg->stencilSize == ds_format->stencil_size)
1461             value += 2;
1462         if (cfg->alphaSize == color_format->alpha_size)
1463             value += 4;
1464         /* We like to have aux buffers in backbuffer mode */
1465         if (auxBuffers && cfg->auxBuffers)
1466             value += 8;
1467         if (cfg->redSize == color_format->red_size
1468                 && cfg->greenSize == color_format->green_size
1469                 && cfg->blueSize == color_format->blue_size)
1470             value += 16;
1471
1472         if (value > current_value)
1473         {
1474             iPixelFormat = cfg->iPixelFormat;
1475             current_value = value;
1476         }
1477     }
1478
1479     /* When findCompatible is set and no suitable format was found, let ChoosePixelFormat choose a pixel format in order not to crash. */
1480     if(!iPixelFormat && !findCompatible) {
1481         ERR("Can't find a suitable iPixelFormat\n");
1482         return FALSE;
1483     } else if(!iPixelFormat) {
1484         PIXELFORMATDESCRIPTOR pfd;
1485
1486         TRACE("Falling back to ChoosePixelFormat as we weren't able to find an exactly matching pixel format\n");
1487         /* PixelFormat selection */
1488         ZeroMemory(&pfd, sizeof(pfd));
1489         pfd.nSize      = sizeof(pfd);
1490         pfd.nVersion   = 1;
1491         pfd.dwFlags    = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW;/*PFD_GENERIC_ACCELERATED*/
1492         pfd.iPixelType = PFD_TYPE_RGBA;
1493         pfd.cAlphaBits = color_format->alpha_size;
1494         pfd.cColorBits = color_format->red_size + color_format->green_size
1495                 + color_format->blue_size + color_format->alpha_size;
1496         pfd.cDepthBits = ds_format->depth_size;
1497         pfd.cStencilBits = ds_format->stencil_size;
1498         pfd.iLayerType = PFD_MAIN_PLANE;
1499
1500         iPixelFormat = ChoosePixelFormat(hdc, &pfd);
1501         if(!iPixelFormat) {
1502             /* If this happens something is very wrong as ChoosePixelFormat barely fails */
1503             ERR("Can't find a suitable iPixelFormat\n");
1504             return FALSE;
1505         }
1506     }
1507
1508     TRACE("Found iPixelFormat=%d for ColorFormat=%s, DepthStencilFormat=%s\n",
1509             iPixelFormat, debug_d3dformat(color_format->id), debug_d3dformat(ds_format->id));
1510     return iPixelFormat;
1511 }
1512
1513 /* Context activation is done by the caller. */
1514 static void bind_dummy_textures(const struct wined3d_device *device, const struct wined3d_context *context)
1515 {
1516     const struct wined3d_gl_info *gl_info = context->gl_info;
1517     unsigned int i, count = min(MAX_COMBINED_SAMPLERS, gl_info->limits.combined_samplers);
1518
1519     for (i = 0; i < count; ++i)
1520     {
1521         GL_EXTCALL(glActiveTexture(GL_TEXTURE0 + i));
1522         checkGLcall("glActiveTexture");
1523
1524         gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[i]);
1525         checkGLcall("glBindTexture");
1526
1527         if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
1528         {
1529             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[i]);
1530             checkGLcall("glBindTexture");
1531         }
1532
1533         if (gl_info->supported[EXT_TEXTURE3D])
1534         {
1535             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[i]);
1536             checkGLcall("glBindTexture");
1537         }
1538
1539         if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
1540         {
1541             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[i]);
1542             checkGLcall("glBindTexture");
1543         }
1544
1545         if (gl_info->supported[EXT_TEXTURE_ARRAY])
1546         {
1547             gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D_ARRAY, device->dummy_texture_2d_array[i]);
1548             checkGLcall("glBindTexture");
1549         }
1550     }
1551 }
1552
1553 static BOOL context_debug_output_enabled(const struct wined3d_gl_info *gl_info)
1554 {
1555     return gl_info->supported[ARB_DEBUG_OUTPUT]
1556             && (ERR_ON(d3d) || FIXME_ON(d3d) || WARN_ON(d3d_perf));
1557 }
1558
1559 static void WINE_GLAPI wined3d_debug_callback(GLenum source, GLenum type, GLuint id,
1560         GLenum severity, GLsizei length, const char *message, void *ctx)
1561 {
1562     switch (type)
1563     {
1564         case GL_DEBUG_TYPE_ERROR_ARB:
1565             ERR("%p: %s.\n", ctx, debugstr_an(message, length));
1566             break;
1567
1568         case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB:
1569         case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB:
1570         case GL_DEBUG_TYPE_PORTABILITY_ARB:
1571             FIXME("%p: %s.\n", ctx, debugstr_an(message, length));
1572             break;
1573
1574         case GL_DEBUG_TYPE_PERFORMANCE_ARB:
1575             WARN_(d3d_perf)("%p: %s.\n", ctx, debugstr_an(message, length));
1576             break;
1577
1578         default:
1579             FIXME("ctx %p, type %#x: %s.\n", ctx, type, debugstr_an(message, length));
1580             break;
1581     }
1582 }
1583
1584 HGLRC context_create_wgl_attribs(const struct wined3d_gl_info *gl_info, HDC hdc, HGLRC share_ctx)
1585 {
1586     HGLRC ctx;
1587     unsigned int ctx_attrib_idx = 0;
1588     GLint ctx_attribs[7], ctx_flags = 0;
1589
1590     if (context_debug_output_enabled(gl_info))
1591         ctx_flags = WGL_CONTEXT_DEBUG_BIT_ARB;
1592     ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
1593     ctx_attribs[ctx_attrib_idx++] = gl_info->selected_gl_version >> 16;
1594     ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_MINOR_VERSION_ARB;
1595     ctx_attribs[ctx_attrib_idx++] = gl_info->selected_gl_version & 0xffff;
1596     if (gl_info->selected_gl_version >= MAKEDWORD_VERSION(3, 2))
1597         ctx_flags |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
1598     if (ctx_flags)
1599     {
1600         ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_FLAGS_ARB;
1601         ctx_attribs[ctx_attrib_idx++] = ctx_flags;
1602     }
1603     ctx_attribs[ctx_attrib_idx] = 0;
1604
1605     if (!(ctx = gl_info->p_wglCreateContextAttribsARB(hdc, share_ctx, ctx_attribs)))
1606     {
1607         if (ctx_flags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
1608         {
1609             ctx_attribs[ctx_attrib_idx - 1] &= ~WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
1610             if (!(ctx = gl_info->p_wglCreateContextAttribsARB(hdc, share_ctx, ctx_attribs)))
1611                 WARN("Failed to create a WGL context with wglCreateContextAttribsARB, last error %#x.\n",
1612                         GetLastError());
1613         }
1614     }
1615     return ctx;
1616 }
1617
1618 struct wined3d_context *context_create(struct wined3d_swapchain *swapchain,
1619         struct wined3d_texture *target, const struct wined3d_format *ds_format)
1620 {
1621     struct wined3d_device *device = swapchain->device;
1622     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
1623     const struct wined3d_format *color_format;
1624     struct wined3d_context *ret;
1625     BOOL auxBuffers = FALSE;
1626     HGLRC ctx, share_ctx;
1627     int pixel_format;
1628     unsigned int s;
1629     DWORD state;
1630     HDC hdc = 0;
1631     BOOL hdc_is_private = FALSE;
1632
1633     TRACE("swapchain %p, target %p, window %p.\n", swapchain, target, swapchain->win_handle);
1634
1635     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ret));
1636     if (!ret)
1637         return NULL;
1638
1639     ret->blit_targets = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1640             gl_info->limits.buffers * sizeof(*ret->blit_targets));
1641     if (!ret->blit_targets)
1642         goto out;
1643
1644     ret->draw_buffers = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1645             gl_info->limits.buffers * sizeof(*ret->draw_buffers));
1646     if (!ret->draw_buffers)
1647         goto out;
1648
1649     ret->fbo_key = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1650             FIELD_OFFSET(struct wined3d_fbo_entry_key, objects[gl_info->limits.buffers + 1]));
1651     if (!ret->fbo_key)
1652         goto out;
1653
1654     ret->free_timestamp_query_size = 4;
1655     ret->free_timestamp_queries = HeapAlloc(GetProcessHeap(), 0,
1656             ret->free_timestamp_query_size * sizeof(*ret->free_timestamp_queries));
1657     if (!ret->free_timestamp_queries)
1658         goto out;
1659     list_init(&ret->timestamp_queries);
1660
1661     ret->free_occlusion_query_size = 4;
1662     ret->free_occlusion_queries = HeapAlloc(GetProcessHeap(), 0,
1663             ret->free_occlusion_query_size * sizeof(*ret->free_occlusion_queries));
1664     if (!ret->free_occlusion_queries)
1665         goto out;
1666
1667     list_init(&ret->occlusion_queries);
1668
1669     ret->free_event_query_size = 4;
1670     ret->free_event_queries = HeapAlloc(GetProcessHeap(), 0,
1671             ret->free_event_query_size * sizeof(*ret->free_event_queries));
1672     if (!ret->free_event_queries)
1673         goto out;
1674
1675     list_init(&ret->event_queries);
1676     list_init(&ret->fbo_list);
1677     list_init(&ret->fbo_destroy_list);
1678
1679     if (!device->shader_backend->shader_allocate_context_data(ret))
1680     {
1681         ERR("Failed to allocate shader backend context data.\n");
1682         goto out;
1683     }
1684     if (!device->adapter->fragment_pipe->allocate_context_data(ret))
1685     {
1686         ERR("Failed to allocate fragment pipeline context data.\n");
1687         goto out;
1688     }
1689
1690     /* Initialize the texture unit mapping to a 1:1 mapping */
1691     for (s = 0; s < MAX_COMBINED_SAMPLERS; ++s)
1692     {
1693         if (s < gl_info->limits.combined_samplers)
1694         {
1695             ret->tex_unit_map[s] = s;
1696             ret->rev_tex_unit_map[s] = s;
1697         }
1698         else
1699         {
1700             ret->tex_unit_map[s] = WINED3D_UNMAPPED_STAGE;
1701             ret->rev_tex_unit_map[s] = WINED3D_UNMAPPED_STAGE;
1702         }
1703     }
1704
1705     if (!(hdc = GetDCEx(swapchain->win_handle, 0, DCX_USESTYLE | DCX_CACHE)))
1706     {
1707         WARN("Failed to retrieve device context, trying swapchain backup.\n");
1708
1709         if ((hdc = swapchain_get_backup_dc(swapchain)))
1710             hdc_is_private = TRUE;
1711         else
1712         {
1713             ERR("Failed to retrieve a device context.\n");
1714             goto out;
1715         }
1716     }
1717
1718     color_format = target->resource.format;
1719
1720     /* In case of ORM_BACKBUFFER, make sure to request an alpha component for
1721      * X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
1722     if (wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER)
1723     {
1724         auxBuffers = TRUE;
1725
1726         if (color_format->id == WINED3DFMT_B4G4R4X4_UNORM)
1727             color_format = wined3d_get_format(gl_info, WINED3DFMT_B4G4R4A4_UNORM);
1728         else if (color_format->id == WINED3DFMT_B8G8R8X8_UNORM)
1729             color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1730     }
1731
1732     /* DirectDraw supports 8bit paletted render targets and these are used by
1733      * old games like StarCraft and C&C. Most modern hardware doesn't support
1734      * 8bit natively so we perform some form of 8bit -> 32bit conversion. The
1735      * conversion (ab)uses the alpha component for storing the palette index.
1736      * For this reason we require a format with 8bit alpha, so request
1737      * A8R8G8B8. */
1738     if (color_format->id == WINED3DFMT_P8_UINT)
1739         color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1740
1741     /* When "always_offscreen" is enabled, we only use the drawable for
1742      * presentation blits, and don't do any rendering to it. That means we
1743      * don't need depth or stencil buffers, and can mostly ignore the render
1744      * target format. This wouldn't necessarily be quite correct for 10bpc
1745      * display modes, but we don't currently support those.
1746      * Using the same format regardless of the color/depth/stencil targets
1747      * makes it much less likely that different wined3d instances will set
1748      * conflicting pixel formats. */
1749     if (wined3d_settings.offscreen_rendering_mode != ORM_BACKBUFFER
1750             && wined3d_settings.always_offscreen)
1751     {
1752         color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1753         ds_format = wined3d_get_format(gl_info, WINED3DFMT_UNKNOWN);
1754     }
1755
1756     /* Try to find a pixel format which matches our requirements. */
1757     pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, FALSE);
1758
1759     /* Try to locate a compatible format if we weren't able to find anything. */
1760     if (!pixel_format)
1761     {
1762         TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1763         pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, TRUE);
1764     }
1765
1766     /* If we still don't have a pixel format, something is very wrong as ChoosePixelFormat barely fails */
1767     if (!pixel_format)
1768     {
1769         ERR("Can't find a suitable pixel format.\n");
1770         goto out;
1771     }
1772
1773     ret->gl_info = gl_info;
1774
1775     context_enter(ret);
1776
1777     if (!context_set_pixel_format(ret, hdc, hdc_is_private, pixel_format))
1778     {
1779         ERR("Failed to set pixel format %d on device context %p.\n", pixel_format, hdc);
1780         context_release(ret);
1781         goto out;
1782     }
1783
1784     share_ctx = device->context_count ? device->contexts[0]->glCtx : NULL;
1785     if (gl_info->p_wglCreateContextAttribsARB)
1786     {
1787         if (!(ctx = context_create_wgl_attribs(gl_info, hdc, share_ctx)))
1788             goto out;
1789     }
1790     else
1791     {
1792         if (!(ctx = wglCreateContext(hdc)))
1793         {
1794             ERR("Failed to create a WGL context.\n");
1795             context_release(ret);
1796             goto out;
1797         }
1798
1799         if (share_ctx && !wglShareLists(share_ctx, ctx))
1800         {
1801             ERR("wglShareLists(%p, %p) failed, last error %#x.\n", share_ctx, ctx, GetLastError());
1802             context_release(ret);
1803             if (!wglDeleteContext(ctx))
1804                 ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1805             goto out;
1806         }
1807     }
1808
1809     if (!device_context_add(device, ret))
1810     {
1811         ERR("Failed to add the newly created context to the context list\n");
1812         context_release(ret);
1813         if (!wglDeleteContext(ctx))
1814             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1815         goto out;
1816     }
1817
1818     ret->d3d_info = &device->adapter->d3d_info;
1819     ret->state_table = device->StateTable;
1820
1821     /* Mark all states dirty to force a proper initialization of the states
1822      * on the first use of the context. */
1823     for (state = 0; state <= STATE_HIGHEST; ++state)
1824     {
1825         if (ret->state_table[state].representative)
1826             context_invalidate_state(ret, state);
1827     }
1828
1829     ret->swapchain = swapchain;
1830     ret->current_rt.texture = target;
1831     ret->current_rt.sub_resource_idx = 0;
1832     ret->tid = GetCurrentThreadId();
1833
1834     ret->render_offscreen = wined3d_resource_is_offscreen(&target->resource);
1835     ret->draw_buffers_mask = context_generate_rt_mask(GL_BACK);
1836     ret->valid = 1;
1837
1838     ret->glCtx = ctx;
1839     ret->win_handle = swapchain->win_handle;
1840     ret->hdc = hdc;
1841     ret->hdc_is_private = hdc_is_private;
1842     ret->hdc_has_format = TRUE;
1843     ret->pixel_format = pixel_format;
1844     ret->needs_set = 1;
1845
1846     /* Set up the context defaults */
1847     if (!context_set_current(ret))
1848     {
1849         ERR("Cannot activate context to set up defaults.\n");
1850         device_context_remove(device, ret);
1851         context_release(ret);
1852         if (!wglDeleteContext(ctx))
1853             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1854         goto out;
1855     }
1856
1857     if (context_debug_output_enabled(gl_info))
1858     {
1859         GL_EXTCALL(glDebugMessageCallback(wined3d_debug_callback, ret));
1860         if (TRACE_ON(d3d_synchronous))
1861             gl_info->gl_ops.gl.p_glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
1862         GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_FALSE));
1863         if (ERR_ON(d3d))
1864         {
1865             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_ERROR,
1866                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1867         }
1868         if (FIXME_ON(d3d))
1869         {
1870             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR,
1871                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1872             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR,
1873                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1874             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_PORTABILITY,
1875                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1876         }
1877         if (WARN_ON(d3d_perf))
1878         {
1879             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_PERFORMANCE,
1880                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1881         }
1882     }
1883
1884     gl_info->gl_ops.gl.p_glGetIntegerv(GL_AUX_BUFFERS, &ret->aux_buffers);
1885
1886     TRACE("Setting up the screen\n");
1887
1888     if (gl_info->supported[WINED3D_GL_LEGACY_CONTEXT])
1889     {
1890         gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
1891         checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
1892
1893         gl_info->gl_ops.gl.p_glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
1894         checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
1895
1896         gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1897         checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
1898     }
1899     else
1900     {
1901         GLuint vao;
1902
1903         GL_EXTCALL(glGenVertexArrays(1, &vao));
1904         GL_EXTCALL(glBindVertexArray(vao));
1905         checkGLcall("creating VAO");
1906     }
1907
1908     gl_info->gl_ops.gl.p_glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);
1909     checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);");
1910     gl_info->gl_ops.gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
1911     checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);");
1912
1913     if (gl_info->supported[ARB_VERTEX_BLEND])
1914     {
1915         /* Direct3D always uses n-1 weights for n world matrices and uses
1916          * 1 - sum for the last one this is equal to GL_WEIGHT_SUM_UNITY_ARB.
1917          * Enabling it doesn't do anything unless GL_VERTEX_BLEND_ARB isn't
1918          * enabled as well. */
1919         gl_info->gl_ops.gl.p_glEnable(GL_WEIGHT_SUM_UNITY_ARB);
1920         checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
1921     }
1922     if (gl_info->supported[NV_TEXTURE_SHADER2])
1923     {
1924         /* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
1925          * the previous texture where to source the offset from is always unit - 1.
1926          */
1927         for (s = 1; s < gl_info->limits.textures; ++s)
1928         {
1929             context_active_texture(ret, gl_info, s);
1930             gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_SHADER_NV,
1931                     GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
1932             checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...");
1933         }
1934     }
1935     if (gl_info->supported[ARB_FRAGMENT_PROGRAM])
1936     {
1937         /* MacOS(radeon X1600 at least, but most likely others too) refuses to draw if GLSL and ARBFP are
1938          * enabled, but the currently bound arbfp program is 0. Enabling ARBFP with prog 0 is invalid, but
1939          * GLSL should bypass this. This causes problems in programs that never use the fixed function pipeline,
1940          * because the ARBFP extension is enabled by the ARBFP pipeline at context creation, but no program
1941          * is ever assigned.
1942          *
1943          * So make sure a program is assigned to each context. The first real ARBFP use will set a different
1944          * program and the dummy program is destroyed when the context is destroyed.
1945          */
1946         static const char dummy_program[] =
1947                 "!!ARBfp1.0\n"
1948                 "MOV result.color, fragment.color.primary;\n"
1949                 "END\n";
1950         GL_EXTCALL(glGenProgramsARB(1, &ret->dummy_arbfp_prog));
1951         GL_EXTCALL(glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, ret->dummy_arbfp_prog));
1952         GL_EXTCALL(glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(dummy_program), dummy_program));
1953     }
1954
1955     if (gl_info->supported[ARB_POINT_SPRITE])
1956     {
1957         for (s = 0; s < gl_info->limits.textures; ++s)
1958         {
1959             context_active_texture(ret, gl_info, s);
1960             gl_info->gl_ops.gl.p_glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
1961             checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)");
1962         }
1963     }
1964
1965     if (gl_info->supported[ARB_PROVOKING_VERTEX])
1966     {
1967         GL_EXTCALL(glProvokingVertex(GL_FIRST_VERTEX_CONVENTION));
1968     }
1969     else if (gl_info->supported[EXT_PROVOKING_VERTEX])
1970     {
1971         GL_EXTCALL(glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT));
1972     }
1973     device->shader_backend->shader_init_context_state(ret);
1974     ret->shader_update_mask = (1u << WINED3D_SHADER_TYPE_PIXEL)
1975             | (1u << WINED3D_SHADER_TYPE_VERTEX)
1976             | (1u << WINED3D_SHADER_TYPE_GEOMETRY)
1977             | (1u << WINED3D_SHADER_TYPE_HULL)
1978             | (1u << WINED3D_SHADER_TYPE_DOMAIN);
1979
1980     /* If this happens to be the first context for the device, dummy textures
1981      * are not created yet. In that case, they will be created (and bound) by
1982      * create_dummy_textures right after this context is initialized. */
1983     if (device->dummy_texture_2d[0])
1984         bind_dummy_textures(device, ret);
1985
1986     TRACE("Created context %p.\n", ret);
1987
1988     return ret;
1989
1990 out:
1991     if (hdc) wined3d_release_dc(swapchain->win_handle, hdc);
1992     device->shader_backend->shader_free_context_data(ret);
1993     device->adapter->fragment_pipe->free_context_data(ret);
1994     HeapFree(GetProcessHeap(), 0, ret->free_event_queries);
1995     HeapFree(GetProcessHeap(), 0, ret->free_occlusion_queries);
1996     HeapFree(GetProcessHeap(), 0, ret->free_timestamp_queries);
1997     HeapFree(GetProcessHeap(), 0, ret->fbo_key);
1998     HeapFree(GetProcessHeap(), 0, ret->draw_buffers);
1999     HeapFree(GetProcessHeap(), 0, ret->blit_targets);
2000     HeapFree(GetProcessHeap(), 0, ret);
2001     return NULL;
2002 }
2003
2004 void context_destroy(struct wined3d_device *device, struct wined3d_context *context)
2005 {
2006     BOOL destroy;
2007
2008     TRACE("Destroying ctx %p\n", context);
2009
2010     if (context->tid == GetCurrentThreadId() || !context->current)
2011     {
2012         context_destroy_gl_resources(context);
2013         TlsSetValue(wined3d_context_tls_idx, NULL);
2014         destroy = TRUE;
2015     }
2016     else
2017     {
2018         /* Make a copy of gl_info for context_destroy_gl_resources use, the one
2019            in wined3d_adapter may go away in the meantime */
2020         struct wined3d_gl_info *gl_info = HeapAlloc(GetProcessHeap(), 0, sizeof(*gl_info));
2021         *gl_info = *context->gl_info;
2022         context->gl_info = gl_info;
2023         context->destroyed = 1;
2024         destroy = FALSE;
2025     }
2026
2027     device->shader_backend->shader_free_context_data(context);
2028     device->adapter->fragment_pipe->free_context_data(context);
2029     HeapFree(GetProcessHeap(), 0, context->fbo_key);
2030     HeapFree(GetProcessHeap(), 0, context->draw_buffers);
2031     HeapFree(GetProcessHeap(), 0, context->blit_targets);
2032     device_context_remove(device, context);
2033     if (destroy) HeapFree(GetProcessHeap(), 0, context);
2034 }
2035
2036 /* Context activation is done by the caller. */
2037 static void set_blit_dimension(const struct wined3d_gl_info *gl_info, UINT width, UINT height)
2038 {
2039     const GLdouble projection[] =
2040     {
2041         2.0 / width,          0.0,  0.0, 0.0,
2042                 0.0, 2.0 / height,  0.0, 0.0,
2043                 0.0,          0.0,  2.0, 0.0,
2044                -1.0,         -1.0, -1.0, 1.0,
2045     };
2046
2047     gl_info->gl_ops.gl.p_glMatrixMode(GL_PROJECTION);
2048     checkGLcall("glMatrixMode(GL_PROJECTION)");
2049     gl_info->gl_ops.gl.p_glLoadMatrixd(projection);
2050     checkGLcall("glLoadMatrixd");
2051     gl_info->gl_ops.gl.p_glViewport(0, 0, width, height);
2052     checkGLcall("glViewport");
2053 }
2054
2055 static void context_get_rt_size(const struct wined3d_context *context, SIZE *size)
2056 {
2057     const struct wined3d_texture *rt = context->current_rt.texture;
2058     unsigned int level;
2059
2060     if (rt->swapchain && rt->swapchain->front_buffer == rt)
2061     {
2062         RECT window_size;
2063
2064         GetClientRect(context->win_handle, &window_size);
2065         size->cx = window_size.right - window_size.left;
2066         size->cy = window_size.bottom - window_size.top;
2067
2068         return;
2069     }
2070
2071     level = context->current_rt.sub_resource_idx % rt->level_count;
2072     size->cx = wined3d_texture_get_level_width(rt, level);
2073     size->cy = wined3d_texture_get_level_height(rt, level);
2074 }
2075
2076 /*****************************************************************************
2077  * SetupForBlit
2078  *
2079  * Sets up a context for DirectDraw blitting.
2080  * All texture units are disabled, texture unit 0 is set as current unit
2081  * fog, lighting, blending, alpha test, z test, scissor test, culling disabled
2082  * color writing enabled for all channels
2083  * register combiners disabled, shaders disabled
2084  * world matrix is set to identity, texture matrix 0 too
2085  * projection matrix is setup for drawing screen coordinates
2086  *
2087  * Params:
2088  *  This: Device to activate the context for
2089  *  context: Context to setup
2090  *
2091  *****************************************************************************/
2092 /* Context activation is done by the caller. */
2093 static void SetupForBlit(const struct wined3d_device *device, struct wined3d_context *context)
2094 {
2095     int i;
2096     const struct wined3d_gl_info *gl_info = context->gl_info;
2097     DWORD sampler;
2098     SIZE rt_size;
2099
2100     TRACE("Setting up context %p for blitting\n", context);
2101
2102     context_get_rt_size(context, &rt_size);
2103
2104     if (context->last_was_blit)
2105     {
2106         if (context->blit_w != rt_size.cx || context->blit_h != rt_size.cy)
2107         {
2108             set_blit_dimension(gl_info, rt_size.cx, rt_size.cy);
2109             context->blit_w = rt_size.cx;
2110             context->blit_h = rt_size.cy;
2111             /* No need to dirtify here, the states are still dirtified because
2112              * they weren't applied since the last SetupForBlit() call. */
2113         }
2114         TRACE("Context is already set up for blitting, nothing to do\n");
2115         return;
2116     }
2117     context->last_was_blit = TRUE;
2118
2119     /* Disable all textures. The caller can then bind a texture it wants to blit
2120      * from
2121      *
2122      * The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
2123      * function texture unit. No need to care for higher samplers
2124      */
2125     for (i = gl_info->limits.textures - 1; i > 0 ; --i)
2126     {
2127         sampler = context->rev_tex_unit_map[i];
2128         context_active_texture(context, gl_info, i);
2129
2130         if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
2131         {
2132             gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
2133             checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
2134         }
2135         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
2136         checkGLcall("glDisable GL_TEXTURE_3D");
2137         if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
2138         {
2139             gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
2140             checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
2141         }
2142         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
2143         checkGLcall("glDisable GL_TEXTURE_2D");
2144
2145         gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
2146         checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
2147
2148         if (sampler != WINED3D_UNMAPPED_STAGE)
2149         {
2150             if (sampler < MAX_TEXTURES)
2151                 context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_COLOR_OP));
2152             context_invalidate_state(context, STATE_SAMPLER(sampler));
2153         }
2154     }
2155     if (gl_info->supported[ARB_SAMPLER_OBJECTS])
2156         GL_EXTCALL(glBindSampler(0, 0));
2157     context_active_texture(context, gl_info, 0);
2158
2159     sampler = context->rev_tex_unit_map[0];
2160
2161     if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
2162     {
2163         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
2164         checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
2165     }
2166     gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
2167     checkGLcall("glDisable GL_TEXTURE_3D");
2168     if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
2169     {
2170         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
2171         checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
2172     }
2173     gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
2174     checkGLcall("glDisable GL_TEXTURE_2D");
2175
2176     gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
2177
2178     gl_info->gl_ops.gl.p_glMatrixMode(GL_TEXTURE);
2179     checkGLcall("glMatrixMode(GL_TEXTURE)");
2180     gl_info->gl_ops.gl.p_glLoadIdentity();
2181     checkGLcall("glLoadIdentity()");
2182
2183     if (gl_info->supported[EXT_TEXTURE_LOD_BIAS])
2184     {
2185         gl_info->gl_ops.gl.p_glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
2186                 GL_TEXTURE_LOD_BIAS_EXT, 0.0f);
2187         checkGLcall("glTexEnvf GL_TEXTURE_LOD_BIAS_EXT ...");
2188     }
2189
2190     if (sampler != WINED3D_UNMAPPED_STAGE)
2191     {
2192         if (sampler < MAX_TEXTURES)
2193         {
2194             context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_TEXTURE0 + sampler));
2195             context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_COLOR_OP));
2196         }
2197         context_invalidate_state(context, STATE_SAMPLER(sampler));
2198     }
2199
2200     /* Other misc states */
2201     gl_info->gl_ops.gl.p_glDisable(GL_ALPHA_TEST);
2202     checkGLcall("glDisable(GL_ALPHA_TEST)");
2203     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHATESTENABLE));
2204     gl_info->gl_ops.gl.p_glDisable(GL_LIGHTING);
2205     checkGLcall("glDisable GL_LIGHTING");
2206     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_LIGHTING));
2207     gl_info->gl_ops.gl.p_glDisable(GL_DEPTH_TEST);
2208     checkGLcall("glDisable GL_DEPTH_TEST");
2209     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ZENABLE));
2210     glDisableWINE(GL_FOG);
2211     checkGLcall("glDisable GL_FOG");
2212     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_FOGENABLE));
2213     gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
2214     checkGLcall("glDisable GL_BLEND");
2215     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2216     gl_info->gl_ops.gl.p_glDisable(GL_CULL_FACE);
2217     checkGLcall("glDisable GL_CULL_FACE");
2218     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_CULLMODE));
2219     gl_info->gl_ops.gl.p_glDisable(GL_STENCIL_TEST);
2220     checkGLcall("glDisable GL_STENCIL_TEST");
2221     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_STENCILENABLE));
2222     gl_info->gl_ops.gl.p_glDisable(GL_SCISSOR_TEST);
2223     checkGLcall("glDisable GL_SCISSOR_TEST");
2224     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
2225     if (gl_info->supported[ARB_POINT_SPRITE])
2226     {
2227         gl_info->gl_ops.gl.p_glDisable(GL_POINT_SPRITE_ARB);
2228         checkGLcall("glDisable GL_POINT_SPRITE_ARB");
2229         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_POINTSPRITEENABLE));
2230     }
2231     gl_info->gl_ops.gl.p_glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
2232     checkGLcall("glColorMask");
2233     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
2234     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
2235     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
2236     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
2237     if (gl_info->supported[EXT_SECONDARY_COLOR])
2238     {
2239         gl_info->gl_ops.gl.p_glDisable(GL_COLOR_SUM_EXT);
2240         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SPECULARENABLE));
2241         checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
2242     }
2243
2244     /* Setup transforms */
2245     gl_info->gl_ops.gl.p_glMatrixMode(GL_MODELVIEW);
2246     checkGLcall("glMatrixMode(GL_MODELVIEW)");
2247     gl_info->gl_ops.gl.p_glLoadIdentity();
2248     checkGLcall("glLoadIdentity()");
2249     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_WORLD_MATRIX(0)));
2250
2251     context->last_was_rhw = TRUE;
2252     context_invalidate_state(context, STATE_VDECL); /* because of last_was_rhw = TRUE */
2253
2254     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
2255     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
2256     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
2257     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
2258     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
2259     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
2260     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_CLIPPING));
2261
2262     set_blit_dimension(gl_info, rt_size.cx, rt_size.cy);
2263
2264     /* Disable shaders */
2265     device->shader_backend->shader_disable(device->shader_priv, context);
2266
2267     context->blit_w = rt_size.cx;
2268     context->blit_h = rt_size.cy;
2269     context_invalidate_state(context, STATE_VIEWPORT);
2270     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
2271 }
2272
2273 static inline BOOL is_rt_mask_onscreen(DWORD rt_mask)
2274 {
2275     return rt_mask & (1u << 31);
2276 }
2277
2278 static inline GLenum draw_buffer_from_rt_mask(DWORD rt_mask)
2279 {
2280     return rt_mask & ~(1u << 31);
2281 }
2282
2283 /* Context activation is done by the caller. */
2284 static void context_apply_draw_buffers(struct wined3d_context *context, DWORD rt_mask)
2285 {
2286     const struct wined3d_gl_info *gl_info = context->gl_info;
2287
2288     if (!rt_mask)
2289     {
2290         gl_info->gl_ops.gl.p_glDrawBuffer(GL_NONE);
2291         checkGLcall("glDrawBuffer()");
2292     }
2293     else if (is_rt_mask_onscreen(rt_mask))
2294     {
2295         gl_info->gl_ops.gl.p_glDrawBuffer(draw_buffer_from_rt_mask(rt_mask));
2296         checkGLcall("glDrawBuffer()");
2297     }
2298     else
2299     {
2300         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2301         {
2302             unsigned int i = 0;
2303
2304             while (rt_mask)
2305             {
2306                 if (rt_mask & 1)
2307                     context->draw_buffers[i] = GL_COLOR_ATTACHMENT0 + i;
2308                 else
2309                     context->draw_buffers[i] = GL_NONE;
2310
2311                 rt_mask >>= 1;
2312                 ++i;
2313             }
2314
2315             if (gl_info->supported[ARB_DRAW_BUFFERS])
2316             {
2317                 GL_EXTCALL(glDrawBuffers(i, context->draw_buffers));
2318                 checkGLcall("glDrawBuffers()");
2319             }
2320             else
2321             {
2322                 gl_info->gl_ops.gl.p_glDrawBuffer(context->draw_buffers[0]);
2323                 checkGLcall("glDrawBuffer()");
2324             }
2325         }
2326         else
2327         {
2328             ERR("Unexpected draw buffers mask with backbuffer ORM.\n");
2329         }
2330     }
2331 }
2332
2333 /* Context activation is done by the caller. */
2334 void context_set_draw_buffer(struct wined3d_context *context, GLenum buffer)
2335 {
2336     const struct wined3d_gl_info *gl_info = context->gl_info;
2337     DWORD *current_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2338     DWORD new_mask = context_generate_rt_mask(buffer);
2339
2340     if (new_mask == *current_mask)
2341         return;
2342
2343     gl_info->gl_ops.gl.p_glDrawBuffer(buffer);
2344     checkGLcall("glDrawBuffer()");
2345
2346     *current_mask = new_mask;
2347 }
2348
2349 /* Context activation is done by the caller. */
2350 void context_active_texture(struct wined3d_context *context, const struct wined3d_gl_info *gl_info, unsigned int unit)
2351 {
2352     GL_EXTCALL(glActiveTexture(GL_TEXTURE0 + unit));
2353     checkGLcall("glActiveTexture");
2354     context->active_texture = unit;
2355 }
2356
2357 void context_bind_texture(struct wined3d_context *context, GLenum target, GLuint name)
2358 {
2359     const struct wined3d_gl_info *gl_info = context->gl_info;
2360     DWORD unit = context->active_texture;
2361     DWORD old_texture_type = context->texture_type[unit];
2362
2363     if (name)
2364     {
2365         gl_info->gl_ops.gl.p_glBindTexture(target, name);
2366         checkGLcall("glBindTexture");
2367     }
2368     else
2369     {
2370         target = GL_NONE;
2371     }
2372
2373     if (old_texture_type != target)
2374     {
2375         const struct wined3d_device *device = context->swapchain->device;
2376
2377         switch (old_texture_type)
2378         {
2379             case GL_NONE:
2380                 /* nothing to do */
2381                 break;
2382             case GL_TEXTURE_2D:
2383                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[unit]);
2384                 checkGLcall("glBindTexture");
2385                 break;
2386             case GL_TEXTURE_2D_ARRAY:
2387                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D_ARRAY, device->dummy_texture_2d_array[unit]);
2388                 checkGLcall("glBindTexture");
2389                 break;
2390             case GL_TEXTURE_RECTANGLE_ARB:
2391                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[unit]);
2392                 checkGLcall("glBindTexture");
2393                 break;
2394             case GL_TEXTURE_CUBE_MAP:
2395                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[unit]);
2396                 checkGLcall("glBindTexture");
2397                 break;
2398             case GL_TEXTURE_3D:
2399                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[unit]);
2400                 checkGLcall("glBindTexture");
2401                 break;
2402             default:
2403                 ERR("Unexpected texture target %#x.\n", old_texture_type);
2404         }
2405
2406         context->texture_type[unit] = target;
2407     }
2408 }
2409
2410 static void context_set_render_offscreen(struct wined3d_context *context, BOOL offscreen)
2411 {
2412     if (context->render_offscreen == offscreen) return;
2413
2414     context_invalidate_state(context, STATE_POINTSPRITECOORDORIGIN);
2415     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
2416     context_invalidate_state(context, STATE_VIEWPORT);
2417     context_invalidate_state(context, STATE_SCISSORRECT);
2418     context_invalidate_state(context, STATE_FRONTFACE);
2419     context->render_offscreen = offscreen;
2420 }
2421
2422 static BOOL match_depth_stencil_format(const struct wined3d_format *existing,
2423         const struct wined3d_format *required)
2424 {
2425     if (existing == required)
2426         return TRUE;
2427     if ((existing->flags[WINED3D_GL_RES_TYPE_TEX_2D] & WINED3DFMT_FLAG_FLOAT)
2428             != (required->flags[WINED3D_GL_RES_TYPE_TEX_2D] & WINED3DFMT_FLAG_FLOAT))
2429         return FALSE;
2430     if (existing->depth_size < required->depth_size)
2431         return FALSE;
2432     /* If stencil bits are used the exact amount is required - otherwise
2433      * wrapping won't work correctly. */
2434     if (required->stencil_size && required->stencil_size != existing->stencil_size)
2435         return FALSE;
2436     return TRUE;
2437 }
2438
2439 /* Context activation is done by the caller. */
2440 static void context_validate_onscreen_formats(struct wined3d_context *context,
2441         const struct wined3d_rendertarget_view *depth_stencil)
2442 {
2443     /* Onscreen surfaces are always in a swapchain */
2444     struct wined3d_swapchain *swapchain = context->current_rt.texture->swapchain;
2445     struct wined3d_surface *surface;
2446
2447     if (context->render_offscreen || !depth_stencil) return;
2448     if (match_depth_stencil_format(swapchain->ds_format, depth_stencil->format)) return;
2449
2450     /* TODO: If the requested format would satisfy the needs of the existing one(reverse match),
2451      * or no onscreen depth buffer was created, the OpenGL drawable could be changed to the new
2452      * format. */
2453     WARN("Depth stencil format is not supported by WGL, rendering the backbuffer in an FBO\n");
2454
2455     /* The currently active context is the necessary context to access the swapchain's onscreen buffers */
2456     surface = context->current_rt.texture->sub_resources[context->current_rt.sub_resource_idx].u.surface;
2457     surface_load_location(surface, context, WINED3D_LOCATION_TEXTURE_RGB);
2458     swapchain->render_to_fbo = TRUE;
2459     swapchain_update_draw_bindings(swapchain);
2460     context_set_render_offscreen(context, TRUE);
2461 }
2462
2463 GLenum context_get_offscreen_gl_buffer(const struct wined3d_context *context)
2464 {
2465     switch (wined3d_settings.offscreen_rendering_mode)
2466     {
2467         case ORM_FBO:
2468             return GL_COLOR_ATTACHMENT0;
2469
2470         case ORM_BACKBUFFER:
2471             return context->aux_buffers > 0 ? GL_AUX0 : GL_BACK;
2472
2473         default:
2474             FIXME("Unhandled offscreen rendering mode %#x.\n", wined3d_settings.offscreen_rendering_mode);
2475             return GL_BACK;
2476     }
2477 }
2478
2479 static DWORD context_generate_rt_mask_no_fbo(const struct wined3d_context *context, struct wined3d_texture *rt)
2480 {
2481     if (!rt || rt->resource.format->id == WINED3DFMT_NULL)
2482         return 0;
2483     else if (rt->swapchain)
2484         return context_generate_rt_mask_from_resource(&rt->resource);
2485     else
2486         return context_generate_rt_mask(context_get_offscreen_gl_buffer(context));
2487 }
2488
2489 /* Context activation is done by the caller. */
2490 void context_apply_blit_state(struct wined3d_context *context, const struct wined3d_device *device)
2491 {
2492     struct wined3d_texture *rt = context->current_rt.texture;
2493     struct wined3d_surface *surface;
2494     DWORD rt_mask, *cur_mask;
2495
2496     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2497     {
2498         context_validate_onscreen_formats(context, NULL);
2499
2500         if (context->render_offscreen)
2501         {
2502             wined3d_texture_load(rt, context, FALSE);
2503
2504             surface = rt->sub_resources[context->current_rt.sub_resource_idx].u.surface;
2505             context_apply_fbo_state_blit(context, GL_FRAMEBUFFER, surface, NULL, rt->resource.draw_binding);
2506             if (rt->resource.format->id != WINED3DFMT_NULL)
2507                 rt_mask = 1;
2508             else
2509                 rt_mask = 0;
2510         }
2511         else
2512         {
2513             context->current_fbo = NULL;
2514             context_bind_fbo(context, GL_FRAMEBUFFER, 0);
2515             rt_mask = context_generate_rt_mask_from_resource(&rt->resource);
2516         }
2517     }
2518     else
2519     {
2520         rt_mask = context_generate_rt_mask_no_fbo(context, rt);
2521     }
2522
2523     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2524
2525     if (rt_mask != *cur_mask)
2526     {
2527         context_apply_draw_buffers(context, rt_mask);
2528         *cur_mask = rt_mask;
2529     }
2530
2531     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2532     {
2533         context_check_fbo_status(context, GL_FRAMEBUFFER);
2534     }
2535
2536     SetupForBlit(device, context);
2537     context_invalidate_state(context, STATE_FRAMEBUFFER);
2538 }
2539
2540 static BOOL context_validate_rt_config(UINT rt_count, struct wined3d_rendertarget_view * const *rts,
2541         const struct wined3d_rendertarget_view *ds)
2542 {
2543     unsigned int i;
2544
2545     if (ds) return TRUE;
2546
2547     for (i = 0; i < rt_count; ++i)
2548     {
2549         if (rts[i] && rts[i]->format->id != WINED3DFMT_NULL)
2550             return TRUE;
2551     }
2552
2553     WARN("Invalid render target config, need at least one attachment.\n");
2554     return FALSE;
2555 }
2556
2557 /* Context activation is done by the caller. */
2558 BOOL context_apply_clear_state(struct wined3d_context *context, const struct wined3d_state *state,
2559         UINT rt_count, const struct wined3d_fb_state *fb)
2560 {
2561     struct wined3d_rendertarget_view **rts = fb->render_targets;
2562     struct wined3d_rendertarget_view *dsv = fb->depth_stencil;
2563     const struct wined3d_gl_info *gl_info = context->gl_info;
2564     DWORD rt_mask = 0, *cur_mask;
2565     UINT i;
2566
2567     if (isStateDirty(context, STATE_FRAMEBUFFER) || fb != state->fb
2568             || rt_count != gl_info->limits.buffers)
2569     {
2570         if (!context_validate_rt_config(rt_count, rts, dsv))
2571             return FALSE;
2572
2573         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2574         {
2575             context_validate_onscreen_formats(context, dsv);
2576
2577             if (!rt_count || wined3d_resource_is_offscreen(rts[0]->resource))
2578             {
2579                 for (i = 0; i < rt_count; ++i)
2580                 {
2581                     context->blit_targets[i] = wined3d_rendertarget_view_get_surface(rts[i]);
2582                     if (rts[i] && rts[i]->format->id != WINED3DFMT_NULL)
2583                         rt_mask |= (1u << i);
2584                 }
2585                 while (i < gl_info->limits.buffers)
2586                 {
2587                     context->blit_targets[i] = NULL;
2588                     ++i;
2589                 }
2590                 context_apply_fbo_state(context, GL_FRAMEBUFFER, context->blit_targets,
2591                         wined3d_rendertarget_view_get_surface(dsv),
2592                         rt_count ? rts[0]->resource->draw_binding : 0,
2593                         dsv ? dsv->resource->draw_binding : 0);
2594             }
2595             else
2596             {
2597                 context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL,
2598                         WINED3D_LOCATION_DRAWABLE, WINED3D_LOCATION_DRAWABLE);
2599                 rt_mask = context_generate_rt_mask_from_resource(rts[0]->resource);
2600             }
2601
2602             /* If the framebuffer is not the device's fb the device's fb has to be reapplied
2603              * next draw. Otherwise we could mark the framebuffer state clean here, once the
2604              * state management allows this */
2605             context_invalidate_state(context, STATE_FRAMEBUFFER);
2606         }
2607         else
2608         {
2609             rt_mask = context_generate_rt_mask_no_fbo(context,
2610                     rt_count ? wined3d_rendertarget_view_get_surface(rts[0])->container : NULL);
2611         }
2612     }
2613     else if (wined3d_settings.offscreen_rendering_mode == ORM_FBO
2614             && (!rt_count || wined3d_resource_is_offscreen(rts[0]->resource)))
2615     {
2616         for (i = 0; i < rt_count; ++i)
2617         {
2618             if (rts[i] && rts[i]->format->id != WINED3DFMT_NULL)
2619                 rt_mask |= (1u << i);
2620         }
2621     }
2622     else
2623     {
2624         rt_mask = context_generate_rt_mask_no_fbo(context,
2625                 rt_count ? wined3d_rendertarget_view_get_surface(rts[0])->container : NULL);
2626     }
2627
2628     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2629
2630     if (rt_mask != *cur_mask)
2631     {
2632         context_apply_draw_buffers(context, rt_mask);
2633         *cur_mask = rt_mask;
2634         context_invalidate_state(context, STATE_FRAMEBUFFER);
2635     }
2636
2637     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2638     {
2639         context_check_fbo_status(context, GL_FRAMEBUFFER);
2640     }
2641
2642     if (context->last_was_blit)
2643         context->last_was_blit = FALSE;
2644
2645     /* Blending and clearing should be orthogonal, but tests on the nvidia
2646      * driver show that disabling blending when clearing improves the clearing
2647      * performance incredibly. */
2648     gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
2649     gl_info->gl_ops.gl.p_glEnable(GL_SCISSOR_TEST);
2650     if (rt_count && gl_info->supported[ARB_FRAMEBUFFER_SRGB])
2651     {
2652         if (needs_srgb_write(context, state, fb))
2653             gl_info->gl_ops.gl.p_glEnable(GL_FRAMEBUFFER_SRGB);
2654         else
2655             gl_info->gl_ops.gl.p_glDisable(GL_FRAMEBUFFER_SRGB);
2656         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SRGBWRITEENABLE));
2657     }
2658     checkGLcall("setting up state for clear");
2659
2660     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2661     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
2662     context_invalidate_state(context, STATE_SCISSORRECT);
2663
2664     return TRUE;
2665 }
2666
2667 static DWORD find_draw_buffers_mask(const struct wined3d_context *context, const struct wined3d_state *state)
2668 {
2669     struct wined3d_rendertarget_view **rts = state->fb->render_targets;
2670     struct wined3d_shader *ps = state->shader[WINED3D_SHADER_TYPE_PIXEL];
2671     DWORD rt_mask, rt_mask_bits;
2672     unsigned int i;
2673
2674     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
2675         return context_generate_rt_mask_no_fbo(context, wined3d_rendertarget_view_get_surface(rts[0])->container);
2676     else if (!context->render_offscreen)
2677         return context_generate_rt_mask_from_resource(rts[0]->resource);
2678
2679     rt_mask = ps ? ps->reg_maps.rt_mask : 1;
2680     rt_mask &= context->d3d_info->valid_rt_mask;
2681     rt_mask_bits = rt_mask;
2682     i = 0;
2683     while (rt_mask_bits)
2684     {
2685         rt_mask_bits &= ~(1u << i);
2686         if (!rts[i] || rts[i]->format->id == WINED3DFMT_NULL)
2687             rt_mask &= ~(1u << i);
2688
2689         i++;
2690     }
2691
2692     return rt_mask;
2693 }
2694
2695 /* Context activation is done by the caller. */
2696 void context_state_fb(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2697 {
2698     DWORD rt_mask = find_draw_buffers_mask(context, state);
2699     const struct wined3d_fb_state *fb = state->fb;
2700     DWORD *cur_mask;
2701
2702     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2703     {
2704         if (!context->render_offscreen)
2705         {
2706             context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL,
2707                     WINED3D_LOCATION_DRAWABLE, WINED3D_LOCATION_DRAWABLE);
2708         }
2709         else
2710         {
2711             unsigned int i;
2712
2713             for (i = 0; i < context->gl_info->limits.buffers; ++i)
2714             {
2715                 context->blit_targets[i] = wined3d_rendertarget_view_get_surface(fb->render_targets[i]);
2716             }
2717             context_apply_fbo_state(context, GL_FRAMEBUFFER, context->blit_targets,
2718                     wined3d_rendertarget_view_get_surface(fb->depth_stencil),
2719                     fb->render_targets[0] ? fb->render_targets[0]->resource->draw_binding : 0,
2720                     fb->depth_stencil ? fb->depth_stencil->resource->draw_binding : 0);
2721         }
2722     }
2723
2724     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2725     if (rt_mask != *cur_mask)
2726     {
2727         context_apply_draw_buffers(context, rt_mask);
2728         *cur_mask = rt_mask;
2729     }
2730 }
2731
2732 static void context_map_stage(struct wined3d_context *context, DWORD stage, DWORD unit)
2733 {
2734     DWORD i = context->rev_tex_unit_map[unit];
2735     DWORD j = context->tex_unit_map[stage];
2736
2737     TRACE("Mapping stage %u to unit %u.\n", stage, unit);
2738     context->tex_unit_map[stage] = unit;
2739     if (i != WINED3D_UNMAPPED_STAGE && i != stage)
2740         context->tex_unit_map[i] = WINED3D_UNMAPPED_STAGE;
2741
2742     context->rev_tex_unit_map[unit] = stage;
2743     if (j != WINED3D_UNMAPPED_STAGE && j != unit)
2744         context->rev_tex_unit_map[j] = WINED3D_UNMAPPED_STAGE;
2745 }
2746
2747 static void context_invalidate_texture_stage(struct wined3d_context *context, DWORD stage)
2748 {
2749     DWORD i;
2750
2751     for (i = 0; i <= WINED3D_HIGHEST_TEXTURE_STATE; ++i)
2752         context_invalidate_state(context, STATE_TEXTURESTAGE(stage, i));
2753 }
2754
2755 static void context_update_fixed_function_usage_map(struct wined3d_context *context,
2756         const struct wined3d_state *state)
2757 {
2758     UINT i, start, end;
2759
2760     context->fixed_function_usage_map = 0;
2761     for (i = 0; i < MAX_TEXTURES; ++i)
2762     {
2763         enum wined3d_texture_op color_op = state->texture_states[i][WINED3D_TSS_COLOR_OP];
2764         enum wined3d_texture_op alpha_op = state->texture_states[i][WINED3D_TSS_ALPHA_OP];
2765         DWORD color_arg1 = state->texture_states[i][WINED3D_TSS_COLOR_ARG1] & WINED3DTA_SELECTMASK;
2766         DWORD color_arg2 = state->texture_states[i][WINED3D_TSS_COLOR_ARG2] & WINED3DTA_SELECTMASK;
2767         DWORD color_arg3 = state->texture_states[i][WINED3D_TSS_COLOR_ARG0] & WINED3DTA_SELECTMASK;
2768         DWORD alpha_arg1 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG1] & WINED3DTA_SELECTMASK;
2769         DWORD alpha_arg2 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG2] & WINED3DTA_SELECTMASK;
2770         DWORD alpha_arg3 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG0] & WINED3DTA_SELECTMASK;
2771
2772         /* Not used, and disable higher stages. */
2773         if (color_op == WINED3D_TOP_DISABLE)
2774             break;
2775
2776         if (((color_arg1 == WINED3DTA_TEXTURE) && color_op != WINED3D_TOP_SELECT_ARG2)
2777                 || ((color_arg2 == WINED3DTA_TEXTURE) && color_op != WINED3D_TOP_SELECT_ARG1)
2778                 || ((color_arg3 == WINED3DTA_TEXTURE)
2779                     && (color_op == WINED3D_TOP_MULTIPLY_ADD || color_op == WINED3D_TOP_LERP))
2780                 || ((alpha_arg1 == WINED3DTA_TEXTURE) && alpha_op != WINED3D_TOP_SELECT_ARG2)
2781                 || ((alpha_arg2 == WINED3DTA_TEXTURE) && alpha_op != WINED3D_TOP_SELECT_ARG1)
2782                 || ((alpha_arg3 == WINED3DTA_TEXTURE)
2783                     && (alpha_op == WINED3D_TOP_MULTIPLY_ADD || alpha_op == WINED3D_TOP_LERP)))
2784             context->fixed_function_usage_map |= (1u << i);
2785
2786         if ((color_op == WINED3D_TOP_BUMPENVMAP || color_op == WINED3D_TOP_BUMPENVMAP_LUMINANCE)
2787                 && i < MAX_TEXTURES - 1)
2788             context->fixed_function_usage_map |= (1u << (i + 1));
2789     }
2790
2791     if (i < context->lowest_disabled_stage)
2792     {
2793         start = i;
2794         end = context->lowest_disabled_stage;
2795     }
2796     else
2797     {
2798         start = context->lowest_disabled_stage;
2799         end = i;
2800     }
2801
2802     context->lowest_disabled_stage = i;
2803     for (i = start + 1; i < end; ++i)
2804     {
2805         context_invalidate_state(context, STATE_TEXTURESTAGE(i, WINED3D_TSS_COLOR_OP));
2806     }
2807 }
2808
2809 static void context_map_fixed_function_samplers(struct wined3d_context *context,
2810         const struct wined3d_state *state)
2811 {
2812     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2813     const struct wined3d_gl_info *gl_info = context->gl_info;
2814     unsigned int i, tex;
2815     WORD ffu_map;
2816
2817     context_update_fixed_function_usage_map(context, state);
2818
2819     if (gl_info->limits.combined_samplers >= MAX_COMBINED_SAMPLERS)
2820         return;
2821
2822     ffu_map = context->fixed_function_usage_map;
2823
2824     if (d3d_info->limits.ffp_textures == d3d_info->limits.ffp_blend_stages
2825             || context->lowest_disabled_stage <= d3d_info->limits.ffp_textures)
2826     {
2827         for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2828         {
2829             if (!(ffu_map & 1))
2830                 continue;
2831
2832             if (context->tex_unit_map[i] != i)
2833             {
2834                 context_map_stage(context, i, i);
2835                 context_invalidate_state(context, STATE_SAMPLER(i));
2836                 context_invalidate_texture_stage(context, i);
2837             }
2838         }
2839         return;
2840     }
2841
2842     /* Now work out the mapping */
2843     tex = 0;
2844     for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2845     {
2846         if (!(ffu_map & 1))
2847             continue;
2848
2849         if (context->tex_unit_map[i] != tex)
2850         {
2851             context_map_stage(context, i, tex);
2852             context_invalidate_state(context, STATE_SAMPLER(i));
2853             context_invalidate_texture_stage(context, i);
2854         }
2855
2856         ++tex;
2857     }
2858 }
2859
2860 static void context_map_psamplers(struct wined3d_context *context, const struct wined3d_state *state)
2861 {
2862     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2863     const struct wined3d_gl_info *gl_info = context->gl_info;
2864     const struct wined3d_shader_resource_info *resource_info =
2865             state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.resource_info;
2866     unsigned int i;
2867
2868     if (gl_info->limits.combined_samplers >= MAX_COMBINED_SAMPLERS)
2869         return;
2870
2871     for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i)
2872     {
2873         if (resource_info[i].type && context->tex_unit_map[i] != i)
2874         {
2875             context_map_stage(context, i, i);
2876             context_invalidate_state(context, STATE_SAMPLER(i));
2877             if (i < d3d_info->limits.ffp_blend_stages)
2878                 context_invalidate_texture_stage(context, i);
2879         }
2880     }
2881 }
2882
2883 static BOOL context_unit_free_for_vs(const struct wined3d_context *context,
2884         const struct wined3d_shader_resource_info *ps_resource_info, DWORD unit)
2885 {
2886     DWORD current_mapping = context->rev_tex_unit_map[unit];
2887
2888     /* Not currently used */
2889     if (current_mapping == WINED3D_UNMAPPED_STAGE)
2890         return TRUE;
2891
2892     if (current_mapping < MAX_FRAGMENT_SAMPLERS)
2893     {
2894         /* Used by a fragment sampler */
2895
2896         if (!ps_resource_info)
2897         {
2898             /* No pixel shader, check fixed function */
2899             return current_mapping >= MAX_TEXTURES || !(context->fixed_function_usage_map & (1u << current_mapping));
2900         }
2901
2902         /* Pixel shader, check the shader's sampler map */
2903         return !ps_resource_info[current_mapping].type;
2904     }
2905
2906     return TRUE;
2907 }
2908
2909 static void context_map_vsamplers(struct wined3d_context *context, BOOL ps, const struct wined3d_state *state)
2910 {
2911     const struct wined3d_shader_resource_info *vs_resource_info =
2912             state->shader[WINED3D_SHADER_TYPE_VERTEX]->reg_maps.resource_info;
2913     const struct wined3d_shader_resource_info *ps_resource_info = NULL;
2914     const struct wined3d_gl_info *gl_info = context->gl_info;
2915     int start = min(MAX_COMBINED_SAMPLERS, gl_info->limits.combined_samplers) - 1;
2916     int i;
2917
2918     if (gl_info->limits.combined_samplers >= MAX_COMBINED_SAMPLERS)
2919         return;
2920
2921     /* Note that we only care if a resource is used or not, not the
2922      * resource's specific type. Otherwise we'd need to call
2923      * shader_update_samplers() here for 1.x pixelshaders. */
2924     if (ps)
2925         ps_resource_info = state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.resource_info;
2926
2927     for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i)
2928     {
2929         DWORD vsampler_idx = i + MAX_FRAGMENT_SAMPLERS;
2930         if (vs_resource_info[i].type)
2931         {
2932             while (start >= 0)
2933             {
2934                 if (context_unit_free_for_vs(context, ps_resource_info, start))
2935                 {
2936                     if (context->tex_unit_map[vsampler_idx] != start)
2937                     {
2938                         context_map_stage(context, vsampler_idx, start);
2939                         context_invalidate_state(context, STATE_SAMPLER(vsampler_idx));
2940                     }
2941
2942                     --start;
2943                     break;
2944                 }
2945
2946                 --start;
2947             }
2948             if (context->tex_unit_map[vsampler_idx] == WINED3D_UNMAPPED_STAGE)
2949                 WARN("Couldn't find a free texture unit for vertex sampler %u.\n", i);
2950         }
2951     }
2952 }
2953
2954 static void context_update_tex_unit_map(struct wined3d_context *context, const struct wined3d_state *state)
2955 {
2956     BOOL vs = use_vs(state);
2957     BOOL ps = use_ps(state);
2958
2959     /* Try to go for a 1:1 mapping of the samplers when possible. Pixel shaders
2960      * need a 1:1 map at the moment.
2961      * When the mapping of a stage is changed, sampler and ALL texture stage
2962      * states have to be reset. */
2963
2964     if (ps)
2965         context_map_psamplers(context, state);
2966     else
2967         context_map_fixed_function_samplers(context, state);
2968
2969     if (vs)
2970         context_map_vsamplers(context, ps, state);
2971 }
2972
2973 /* Context activation is done by the caller. */
2974 void context_state_drawbuf(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2975 {
2976     DWORD rt_mask, *cur_mask;
2977
2978     if (isStateDirty(context, STATE_FRAMEBUFFER)) return;
2979
2980     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2981     rt_mask = find_draw_buffers_mask(context, state);
2982     if (rt_mask != *cur_mask)
2983     {
2984         context_apply_draw_buffers(context, rt_mask);
2985         *cur_mask = rt_mask;
2986     }
2987 }
2988
2989 static BOOL fixed_get_input(BYTE usage, BYTE usage_idx, unsigned int *regnum)
2990 {
2991     if ((usage == WINED3D_DECL_USAGE_POSITION || usage == WINED3D_DECL_USAGE_POSITIONT) && !usage_idx)
2992         *regnum = WINED3D_FFP_POSITION;
2993     else if (usage == WINED3D_DECL_USAGE_BLEND_WEIGHT && !usage_idx)
2994         *regnum = WINED3D_FFP_BLENDWEIGHT;
2995     else if (usage == WINED3D_DECL_USAGE_BLEND_INDICES && !usage_idx)
2996         *regnum = WINED3D_FFP_BLENDINDICES;
2997     else if (usage == WINED3D_DECL_USAGE_NORMAL && !usage_idx)
2998         *regnum = WINED3D_FFP_NORMAL;
2999     else if (usage == WINED3D_DECL_USAGE_PSIZE && !usage_idx)
3000         *regnum = WINED3D_FFP_PSIZE;
3001     else if (usage == WINED3D_DECL_USAGE_COLOR && !usage_idx)
3002         *regnum = WINED3D_FFP_DIFFUSE;
3003     else if (usage == WINED3D_DECL_USAGE_COLOR && usage_idx == 1)
3004         *regnum = WINED3D_FFP_SPECULAR;
3005     else if (usage == WINED3D_DECL_USAGE_TEXCOORD && usage_idx < WINED3DDP_MAXTEXCOORD)
3006         *regnum = WINED3D_FFP_TEXCOORD0 + usage_idx;
3007     else
3008     {
3009         FIXME("Unsupported input stream [usage=%s, usage_idx=%u].\n", debug_d3ddeclusage(usage), usage_idx);
3010         *regnum = ~0U;
3011         return FALSE;
3012     }
3013
3014     return TRUE;
3015 }
3016
3017 /* Context activation is done by the caller. */
3018 void context_stream_info_from_declaration(struct wined3d_context *context,
3019         const struct wined3d_state *state, struct wined3d_stream_info *stream_info)
3020 {
3021     /* We need to deal with frequency data! */
3022     struct wined3d_vertex_declaration *declaration = state->vertex_declaration;
3023     BOOL use_vshader = use_vs(state);
3024     BOOL generic_attributes = context->d3d_info->ffp_generic_attributes;
3025     unsigned int i;
3026
3027     stream_info->use_map = 0;
3028     stream_info->swizzle_map = 0;
3029     stream_info->position_transformed = declaration->position_transformed;
3030
3031     /* Translate the declaration into strided data. */
3032     for (i = 0; i < declaration->element_count; ++i)
3033     {
3034         const struct wined3d_vertex_declaration_element *element = &declaration->elements[i];
3035         const struct wined3d_stream_state *stream = &state->streams[element->input_slot];
3036         BOOL stride_used;
3037         unsigned int idx;
3038
3039         TRACE("%p Element %p (%u of %u).\n", declaration->elements,
3040                 element, i + 1, declaration->element_count);
3041
3042         if (!stream->buffer)
3043             continue;
3044
3045         TRACE("offset %u input_slot %u usage_idx %d.\n", element->offset, element->input_slot, element->usage_idx);
3046
3047         if (use_vshader)
3048         {
3049             if (element->output_slot == WINED3D_OUTPUT_SLOT_UNUSED)
3050             {
3051                 stride_used = FALSE;
3052             }
3053             else if (element->output_slot == WINED3D_OUTPUT_SLOT_SEMANTIC)
3054             {
3055                 /* TODO: Assuming vertexdeclarations are usually used with the
3056                  * same or a similar shader, it might be worth it to store the
3057                  * last used output slot and try that one first. */
3058                 stride_used = vshader_get_input(state->shader[WINED3D_SHADER_TYPE_VERTEX],
3059                         element->usage, element->usage_idx, &idx);
3060             }
3061             else
3062             {
3063                 idx = element->output_slot;
3064                 stride_used = TRUE;
3065             }
3066         }
3067         else
3068         {
3069             if (!generic_attributes && !element->ffp_valid)
3070             {
3071                 WARN("Skipping unsupported fixed function element of format %s and usage %s.\n",
3072                         debug_d3dformat(element->format->id), debug_d3ddeclusage(element->usage));
3073                 stride_used = FALSE;
3074             }
3075             else
3076             {
3077                 stride_used = fixed_get_input(element->usage, element->usage_idx, &idx);
3078             }
3079         }
3080
3081         if (stride_used)
3082         {
3083             TRACE("Load %s array %u [usage %s, usage_idx %u, "
3084                     "input_slot %u, offset %u, stride %u, format %s, class %s, step_rate %u].\n",
3085                     use_vshader ? "shader": "fixed function", idx,
3086                     debug_d3ddeclusage(element->usage), element->usage_idx, element->input_slot,
3087                     element->offset, stream->stride, debug_d3dformat(element->format->id),
3088                     debug_d3dinput_classification(element->input_slot_class), element->instance_data_step_rate);
3089
3090             stream_info->elements[idx].format = element->format;
3091             stream_info->elements[idx].data.buffer_object = 0;
3092             stream_info->elements[idx].data.addr = (BYTE *)NULL + stream->offset + element->offset;
3093             stream_info->elements[idx].stride = stream->stride;
3094             stream_info->elements[idx].stream_idx = element->input_slot;
3095             if (stream->flags & WINED3DSTREAMSOURCE_INSTANCEDATA)
3096             {
3097                 stream_info->elements[idx].divisor = 1;
3098             }
3099             else if (element->input_slot_class == WINED3D_INPUT_PER_INSTANCE_DATA)
3100             {
3101                 stream_info->elements[idx].divisor = element->instance_data_step_rate;
3102                 if (!element->instance_data_step_rate)
3103                     FIXME("Instance step rate 0 not implemented.\n");
3104             }
3105             else
3106             {
3107                 stream_info->elements[idx].divisor = 0;
3108             }
3109
3110             if (!context->gl_info->supported[ARB_VERTEX_ARRAY_BGRA]
3111                     && element->format->id == WINED3DFMT_B8G8R8A8_UNORM)
3112             {
3113                 stream_info->swizzle_map |= 1u << idx;
3114             }
3115             stream_info->use_map |= 1u << idx;
3116         }
3117     }
3118 }
3119
3120 /* Context activation is done by the caller. */
3121 static void context_update_stream_info(struct wined3d_context *context, const struct wined3d_state *state)
3122 {
3123     const struct wined3d_gl_info *gl_info = context->gl_info;
3124     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
3125     struct wined3d_stream_info *stream_info = &context->stream_info;
3126     DWORD prev_all_vbo = stream_info->all_vbo;
3127     unsigned int i;
3128     WORD map;
3129
3130     context_stream_info_from_declaration(context, state, stream_info);
3131
3132     stream_info->all_vbo = 1;
3133     context->num_buffer_queries = 0;
3134     for (i = 0, map = stream_info->use_map; map; map >>= 1, ++i)
3135     {
3136         struct wined3d_stream_info_element *element;
3137         struct wined3d_bo_address data;
3138         struct wined3d_buffer *buffer;
3139
3140         if (!(map & 1))
3141             continue;
3142
3143         element = &stream_info->elements[i];
3144         buffer = state->streams[element->stream_idx].buffer;
3145
3146         /* We can't use VBOs if the base vertex index is negative. OpenGL
3147          * doesn't accept negative offsets (or rather offsets bigger than the
3148          * VBO, because the pointer is unsigned), so use system memory
3149          * sources. In most sane cases the pointer - offset will still be > 0,
3150          * otherwise it will wrap around to some big value. Hope that with the
3151          * indices the driver wraps it back internally. If not,
3152          * draw_primitive_immediate_mode() is needed, including a vertex buffer
3153          * path. */
3154         if (state->load_base_vertex_index < 0)
3155         {
3156             WARN_(d3d_perf)("load_base_vertex_index is < 0 (%d), not using VBOs.\n",
3157                     state->load_base_vertex_index);
3158             element->data.buffer_object = 0;
3159             element->data.addr += (ULONG_PTR)buffer_get_sysmem(buffer, context);
3160             if ((UINT_PTR)element->data.addr < -state->load_base_vertex_index * element->stride)
3161                 FIXME("System memory vertex data load offset is negative!\n");
3162         }
3163         else
3164         {
3165             buffer_internal_preload(buffer, context, state);
3166             buffer_get_memory(buffer, context, &data);
3167             element->data.buffer_object = data.buffer_object;
3168             element->data.addr += (ULONG_PTR)data.addr;
3169         }
3170
3171         if (!element->data.buffer_object)
3172             stream_info->all_vbo = 0;
3173
3174         if (buffer->query)
3175             context->buffer_queries[context->num_buffer_queries++] = buffer->query;
3176
3177         TRACE("Load array %u {%#x:%p}.\n", i, element->data.buffer_object, element->data.addr);
3178     }
3179
3180     if (use_vs(state))
3181     {
3182         if (state->vertex_declaration->half_float_conv_needed && !stream_info->all_vbo)
3183         {
3184             TRACE("Using immediate mode draw with vertex shaders for FLOAT16 conversion.\n");
3185             context->use_immediate_mode_draw = TRUE;
3186         }
3187         else
3188         {
3189             context->use_immediate_mode_draw = FALSE;
3190         }
3191     }
3192     else
3193     {
3194         WORD slow_mask = -!d3d_info->ffp_generic_attributes & (1u << WINED3D_FFP_PSIZE);
3195         slow_mask |= -!gl_info->supported[ARB_VERTEX_ARRAY_BGRA]
3196                 & ((1u << WINED3D_FFP_DIFFUSE) | (1u << WINED3D_FFP_SPECULAR));
3197
3198         if (((stream_info->position_transformed && !d3d_info->xyzrhw)
3199                 || (stream_info->use_map & slow_mask)) && !stream_info->all_vbo)
3200             context->use_immediate_mode_draw = TRUE;
3201         else
3202             context->use_immediate_mode_draw = FALSE;
3203     }
3204
3205     if (prev_all_vbo != stream_info->all_vbo)
3206         context_invalidate_state(context, STATE_INDEXBUFFER);
3207 }
3208
3209 /* Context activation is done by the caller. */
3210 static void context_preload_texture(struct wined3d_context *context,
3211         const struct wined3d_state *state, unsigned int idx)
3212 {
3213     struct wined3d_texture *texture;
3214
3215     if (!(texture = state->textures[idx]))
3216         return;
3217
3218     wined3d_texture_load(texture, context, state->sampler_states[idx][WINED3D_SAMP_SRGB_TEXTURE]);
3219 }
3220
3221 /* Context activation is done by the caller. */
3222 static void context_preload_textures(struct wined3d_context *context, const struct wined3d_state *state)
3223 {
3224     unsigned int i;
3225
3226     if (use_vs(state))
3227     {
3228         for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i)
3229         {
3230             if (state->shader[WINED3D_SHADER_TYPE_VERTEX]->reg_maps.resource_info[i].type)
3231                 context_preload_texture(context, state, MAX_FRAGMENT_SAMPLERS + i);
3232         }
3233     }
3234
3235     if (use_ps(state))
3236     {
3237         for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i)
3238         {
3239             if (state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.resource_info[i].type)
3240                 context_preload_texture(context, state, i);
3241         }
3242     }
3243     else
3244     {
3245         WORD ffu_map = context->fixed_function_usage_map;
3246
3247         for (i = 0; ffu_map; ffu_map >>= 1, ++i)
3248         {
3249             if (ffu_map & 1)
3250                 context_preload_texture(context, state, i);
3251         }
3252     }
3253 }
3254
3255 static void context_load_shader_resources(struct wined3d_context *context, const struct wined3d_state *state)
3256 {
3257     struct wined3d_shader_sampler_map_entry *entry;
3258     struct wined3d_shader_resource_view *view;
3259     struct wined3d_shader *shader;
3260     unsigned int i, j;
3261
3262     for (i = 0; i < WINED3D_SHADER_TYPE_COUNT; ++i)
3263     {
3264         if (!(shader = state->shader[i]))
3265             continue;
3266
3267         for (j = 0; j < WINED3D_MAX_CBS; ++j)
3268         {
3269             if (state->cb[i][j])
3270                 buffer_internal_preload(state->cb[i][j], context, state);
3271         }
3272
3273         for (j = 0; j < shader->reg_maps.sampler_map.count; ++j)
3274         {
3275             entry = &shader->reg_maps.sampler_map.entries[j];
3276
3277             if (!(view = state->shader_resource_view[i][entry->resource_idx]))
3278             {
3279                 WARN("No resource view bound at index %u, %u.\n", i, entry->resource_idx);
3280                 continue;
3281             }
3282
3283             if (view->resource->type == WINED3D_RTYPE_BUFFER)
3284                 buffer_internal_preload(buffer_from_resource(view->resource), context, state);
3285             else
3286                 wined3d_texture_load(texture_from_resource(view->resource), context, FALSE);
3287         }
3288     }
3289 }
3290
3291 static void context_bind_shader_resources(struct wined3d_context *context, const struct wined3d_state *state)
3292 {
3293     const struct wined3d_device *device = context->swapchain->device;
3294     const struct wined3d_gl_info *gl_info = context->gl_info;
3295     struct wined3d_shader_sampler_map_entry *entry;
3296     struct wined3d_shader_resource_view *view;
3297     struct wined3d_sampler *sampler;
3298     struct wined3d_texture *texture;
3299     struct wined3d_shader *shader;
3300     unsigned int i, j, count;
3301     GLuint sampler_name;
3302
3303     static const struct
3304     {
3305         enum wined3d_shader_type type;
3306         unsigned int base_idx;
3307         unsigned int count;
3308     }
3309     shader_types[] =
3310     {
3311         {WINED3D_SHADER_TYPE_PIXEL,     0,                      MAX_FRAGMENT_SAMPLERS},
3312         {WINED3D_SHADER_TYPE_VERTEX,    MAX_FRAGMENT_SAMPLERS,  MAX_VERTEX_SAMPLERS},
3313     };
3314
3315     for (i = 0; i < ARRAY_SIZE(shader_types); ++i)
3316     {
3317         if (!(shader = state->shader[shader_types[i].type]))
3318             continue;
3319
3320         count = shader->reg_maps.sampler_map.count;
3321         if (count > shader_types[i].count)
3322         {
3323             FIXME("Shader %p needs %u samplers, but only %u are supported.\n",
3324                     shader, count, shader_types[i].count);
3325             count = shader_types[i].count;
3326         }
3327
3328         for (j = 0; j < count; ++j)
3329         {
3330             entry = &shader->reg_maps.sampler_map.entries[j];
3331
3332             if (!(view = state->shader_resource_view[shader_types[i].type][entry->resource_idx]))
3333             {
3334                 WARN("No resource view bound at index %u, %u.\n", shader_types[i].type, entry->resource_idx);
3335                 continue;
3336             }
3337
3338             if (view->resource->type == WINED3D_RTYPE_BUFFER)
3339             {
3340                 FIXME("Buffer shader resources not supported.\n");
3341                 continue;
3342             }
3343
3344             if (entry->sampler_idx == WINED3D_SAMPLER_DEFAULT)
3345             {
3346                 sampler_name = device->default_sampler;
3347             }
3348             else if ((sampler = state->sampler[shader_types[i].type][entry->sampler_idx]))
3349             {
3350                 sampler_name = sampler->name;
3351             }
3352             else
3353             {
3354                 WARN("No sampler object bound at index %u, %u.\n", shader_types[i].type, entry->sampler_idx);
3355                 continue;
3356             }
3357
3358             texture = texture_from_resource(view->resource);
3359             context_active_texture(context, gl_info, shader_types[i].base_idx + entry->bind_idx);
3360             wined3d_texture_bind(texture, context, FALSE);
3361
3362             GL_EXTCALL(glBindSampler(shader_types[i].base_idx + entry->bind_idx, sampler_name));
3363             checkGLcall("glBindSampler");
3364         }
3365     }
3366 }
3367
3368 /* Context activation is done by the caller. */
3369 BOOL context_apply_draw_state(struct wined3d_context *context,
3370         const struct wined3d_device *device, const struct wined3d_state *state)
3371 {
3372     const struct StateEntry *state_table = context->state_table;
3373     const struct wined3d_fb_state *fb = state->fb;
3374     unsigned int i;
3375     WORD map;
3376
3377     if (!context_validate_rt_config(context->gl_info->limits.buffers,
3378             fb->render_targets, fb->depth_stencil))
3379         return FALSE;
3380
3381     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO && isStateDirty(context, STATE_FRAMEBUFFER))
3382     {
3383         context_validate_onscreen_formats(context, fb->depth_stencil);
3384     }
3385
3386     /* Preload resources before FBO setup. Texture preload in particular may
3387      * result in changes to the current FBO, due to using e.g. FBO blits for
3388      * updating a resource location. */
3389     context_update_tex_unit_map(context, state);
3390     context_preload_textures(context, state);
3391     context_load_shader_resources(context, state);
3392     /* TODO: Right now the dependency on the vertex shader is necessary
3393      * since context_stream_info_from_declaration depends on the reg_maps of
3394      * the current VS but maybe it's possible to relax the coupling in some
3395      * situations at least. */
3396     if (isStateDirty(context, STATE_VDECL) || isStateDirty(context, STATE_STREAMSRC)
3397             || isStateDirty(context, STATE_SHADER(WINED3D_SHADER_TYPE_VERTEX)))
3398     {
3399         context_update_stream_info(context, state);
3400     }
3401     else
3402     {
3403         for (i = 0, map = context->stream_info.use_map; map; map >>= 1, ++i)
3404         {
3405             if (map & 1)
3406                 buffer_mark_used(state->streams[context->stream_info.elements[i].stream_idx].buffer);
3407         }
3408     }
3409     if (state->index_buffer)
3410     {
3411         if (context->stream_info.all_vbo)
3412             buffer_internal_preload(state->index_buffer, context, state);
3413         else
3414             buffer_get_sysmem(state->index_buffer, context);
3415     }
3416
3417     for (i = 0; i < context->numDirtyEntries; ++i)
3418     {
3419         DWORD rep = context->dirtyArray[i];
3420         DWORD idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
3421         BYTE shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
3422         context->isStateDirty[idx] &= ~(1u << shift);
3423         state_table[rep].apply(context, state, rep);
3424     }
3425
3426     if (context->shader_update_mask)
3427     {
3428         device->shader_backend->shader_select(device->shader_priv, context, state);
3429         context->shader_update_mask = 0;
3430     }
3431
3432     if (context->constant_update_mask)
3433     {
3434         device->shader_backend->shader_load_constants(device->shader_priv, context, state);
3435         context->constant_update_mask = 0;
3436     }
3437
3438     if (context->update_shader_resource_bindings)
3439     {
3440         context_bind_shader_resources(context, state);
3441         context->update_shader_resource_bindings = 0;
3442     }
3443
3444     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
3445     {
3446         context_check_fbo_status(context, GL_FRAMEBUFFER);
3447     }
3448
3449     context->numDirtyEntries = 0; /* This makes the whole list clean */
3450     context->last_was_blit = FALSE;
3451
3452     return TRUE;
3453 }
3454
3455 static void context_setup_target(struct wined3d_context *context,
3456         struct wined3d_texture *texture, unsigned int sub_resource_idx)
3457 {
3458     BOOL old_render_offscreen = context->render_offscreen, render_offscreen;
3459
3460     render_offscreen = wined3d_resource_is_offscreen(&texture->resource);
3461     if (context->current_rt.texture == texture
3462             && context->current_rt.sub_resource_idx == sub_resource_idx
3463             && render_offscreen == old_render_offscreen)
3464         return;
3465
3466     /* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
3467      * the alpha blend state changes with different render target formats. */
3468     if (!context->current_rt.texture)
3469     {
3470         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
3471     }
3472     else
3473     {
3474         const struct wined3d_format *old = context->current_rt.texture->resource.format;
3475         const struct wined3d_format *new = texture->resource.format;
3476
3477         if (old->id != new->id)
3478         {
3479             /* Disable blending when the alpha mask has changed and when a format doesn't support blending. */
3480             if ((old->alpha_size && !new->alpha_size) || (!old->alpha_size && new->alpha_size)
3481                     || !(texture->resource.format_flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
3482                 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
3483
3484             /* Update sRGB writing when switching between formats that do/do not support sRGB writing */
3485             if ((context->current_rt.texture->resource.format_flags & WINED3DFMT_FLAG_SRGB_WRITE)
3486                     != (texture->resource.format_flags & WINED3DFMT_FLAG_SRGB_WRITE))
3487                 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SRGBWRITEENABLE));
3488         }
3489
3490         /* When switching away from an offscreen render target, and we're not
3491          * using FBOs, we have to read the drawable into the texture. This is
3492          * done via PreLoad (and WINED3D_LOCATION_DRAWABLE set on the surface).
3493          * There are some things that need care though. PreLoad needs a GL context,
3494          * and FindContext is called before the context is activated. It also
3495          * has to be called with the old rendertarget active, otherwise a
3496          * wrong drawable is read. */
3497         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
3498                 && old_render_offscreen && (context->current_rt.texture != texture
3499                 || context->current_rt.sub_resource_idx != sub_resource_idx))
3500         {
3501             unsigned int prev_sub_resource_idx = context->current_rt.sub_resource_idx;
3502             struct wined3d_texture *prev_texture = context->current_rt.texture;
3503
3504             /* Read the back buffer of the old drawable into the destination texture. */
3505             if (prev_texture->texture_srgb.name)
3506                 wined3d_texture_load(prev_texture, context, TRUE);
3507             wined3d_texture_load(prev_texture, context, FALSE);
3508             wined3d_texture_invalidate_location(prev_texture, prev_sub_resource_idx, WINED3D_LOCATION_DRAWABLE);
3509         }
3510     }
3511
3512     context->current_rt.texture = texture;
3513     context->current_rt.sub_resource_idx = sub_resource_idx;
3514     context_set_render_offscreen(context, render_offscreen);
3515 }
3516
3517 struct wined3d_context *context_acquire(const struct wined3d_device *device, struct wined3d_surface *target)
3518 {
3519     struct wined3d_context *current_context = context_get_current();
3520     struct wined3d_texture *target_texture;
3521     unsigned int target_sub_resource_idx;
3522     struct wined3d_context *context;
3523
3524     TRACE("device %p, target %p.\n", device, target);
3525
3526     if (current_context && current_context->destroyed)
3527         current_context = NULL;
3528
3529     if (target)
3530     {
3531         target_texture = target->container;
3532         target_sub_resource_idx = surface_get_sub_resource_idx(target);
3533     }
3534     else
3535     {
3536         if (current_context
3537                 && current_context->current_rt.texture
3538                 && current_context->swapchain->device == device)
3539         {
3540             target_texture = current_context->current_rt.texture;
3541             target_sub_resource_idx = current_context->current_rt.sub_resource_idx;
3542         }
3543         else
3544         {
3545             struct wined3d_swapchain *swapchain = device->swapchains[0];
3546
3547             if (swapchain->back_buffers)
3548                 target_texture = swapchain->back_buffers[0];
3549             else
3550                 target_texture = swapchain->front_buffer;
3551             target_sub_resource_idx = 0;
3552         }
3553     }
3554
3555     if (current_context && current_context->current_rt.texture == target_texture)
3556     {
3557         context = current_context;
3558     }
3559     else if (target_texture->swapchain)
3560     {
3561         TRACE("Rendering onscreen.\n");
3562
3563         context = swapchain_get_context(target_texture->swapchain);
3564     }
3565     else
3566     {
3567         TRACE("Rendering offscreen.\n");
3568
3569         /* Stay with the current context if possible. Otherwise use the
3570          * context for the primary swapchain. */
3571         if (current_context && current_context->swapchain->device == device)
3572             context = current_context;
3573         else
3574             context = swapchain_get_context(device->swapchains[0]);
3575     }
3576
3577     context_enter(context);
3578     context_update_window(context);
3579     context_setup_target(context, target_texture, target_sub_resource_idx);
3580     if (!context->valid) return context;
3581
3582     if (context != current_context)
3583     {
3584         if (!context_set_current(context))
3585             ERR("Failed to activate the new context.\n");
3586     }
3587     else if (context->needs_set)
3588     {
3589         context_set_gl_context(context);
3590     }
3591
3592     return context;
3593 }