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 || surface->container->resource.format->id == WINED3DFMT_NULL)
 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 void wined3d_check_gl_call(const struct wined3d_gl_info *gl_info,
1554         const char *file, unsigned int line, const char *name)
1555 {
1556     GLint err;
1557
1558     if (gl_info->supported[ARB_DEBUG_OUTPUT] || (err = gl_info->gl_ops.gl.p_glGetError()) == GL_NO_ERROR)
1559     {
1560         TRACE("%s call ok %s / %u.\n", name, file, line);
1561         return;
1562     }
1563
1564     do
1565     {
1566         ERR(">>>>>>> %s (%#x) from %s @ %s / %u.\n",
1567                 debug_glerror(err), err, name, file,line);
1568         err = gl_info->gl_ops.gl.p_glGetError();
1569     } while (err != GL_NO_ERROR);
1570 }
1571
1572 static BOOL context_debug_output_enabled(const struct wined3d_gl_info *gl_info)
1573 {
1574     return gl_info->supported[ARB_DEBUG_OUTPUT]
1575             && (ERR_ON(d3d) || FIXME_ON(d3d) || WARN_ON(d3d_perf));
1576 }
1577
1578 static void WINE_GLAPI wined3d_debug_callback(GLenum source, GLenum type, GLuint id,
1579         GLenum severity, GLsizei length, const char *message, void *ctx)
1580 {
1581     switch (type)
1582     {
1583         case GL_DEBUG_TYPE_ERROR_ARB:
1584             ERR("%p: %s.\n", ctx, debugstr_an(message, length));
1585             break;
1586
1587         case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB:
1588         case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB:
1589         case GL_DEBUG_TYPE_PORTABILITY_ARB:
1590             FIXME("%p: %s.\n", ctx, debugstr_an(message, length));
1591             break;
1592
1593         case GL_DEBUG_TYPE_PERFORMANCE_ARB:
1594             WARN_(d3d_perf)("%p: %s.\n", ctx, debugstr_an(message, length));
1595             break;
1596
1597         default:
1598             FIXME("ctx %p, type %#x: %s.\n", ctx, type, debugstr_an(message, length));
1599             break;
1600     }
1601 }
1602
1603 HGLRC context_create_wgl_attribs(const struct wined3d_gl_info *gl_info, HDC hdc, HGLRC share_ctx)
1604 {
1605     HGLRC ctx;
1606     unsigned int ctx_attrib_idx = 0;
1607     GLint ctx_attribs[7], ctx_flags = 0;
1608
1609     if (context_debug_output_enabled(gl_info))
1610         ctx_flags = WGL_CONTEXT_DEBUG_BIT_ARB;
1611     ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
1612     ctx_attribs[ctx_attrib_idx++] = gl_info->selected_gl_version >> 16;
1613     ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_MINOR_VERSION_ARB;
1614     ctx_attribs[ctx_attrib_idx++] = gl_info->selected_gl_version & 0xffff;
1615     if (gl_info->selected_gl_version >= MAKEDWORD_VERSION(3, 2))
1616         ctx_flags |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
1617     if (ctx_flags)
1618     {
1619         ctx_attribs[ctx_attrib_idx++] = WGL_CONTEXT_FLAGS_ARB;
1620         ctx_attribs[ctx_attrib_idx++] = ctx_flags;
1621     }
1622     ctx_attribs[ctx_attrib_idx] = 0;
1623
1624     if (!(ctx = gl_info->p_wglCreateContextAttribsARB(hdc, share_ctx, ctx_attribs)))
1625     {
1626         if (ctx_flags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
1627         {
1628             ctx_attribs[ctx_attrib_idx - 1] &= ~WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
1629             if (!(ctx = gl_info->p_wglCreateContextAttribsARB(hdc, share_ctx, ctx_attribs)))
1630                 WARN("Failed to create a WGL context with wglCreateContextAttribsARB, last error %#x.\n",
1631                         GetLastError());
1632         }
1633     }
1634     return ctx;
1635 }
1636
1637 struct wined3d_context *context_create(struct wined3d_swapchain *swapchain,
1638         struct wined3d_texture *target, const struct wined3d_format *ds_format)
1639 {
1640     struct wined3d_device *device = swapchain->device;
1641     const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
1642     const struct wined3d_format *color_format;
1643     struct wined3d_context *ret;
1644     BOOL auxBuffers = FALSE;
1645     HGLRC ctx, share_ctx;
1646     int pixel_format;
1647     unsigned int s;
1648     DWORD state;
1649     HDC hdc = 0;
1650     BOOL hdc_is_private = FALSE;
1651
1652     TRACE("swapchain %p, target %p, window %p.\n", swapchain, target, swapchain->win_handle);
1653
1654     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ret));
1655     if (!ret)
1656         return NULL;
1657
1658     if (!(ret->blit_targets = wined3d_calloc(gl_info->limits.buffers, sizeof(*ret->blit_targets))))
1659         goto out;
1660
1661     if (!(ret->draw_buffers = wined3d_calloc(gl_info->limits.buffers, sizeof(*ret->draw_buffers))))
1662         goto out;
1663
1664     ret->fbo_key = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1665             FIELD_OFFSET(struct wined3d_fbo_entry_key, objects[gl_info->limits.buffers + 1]));
1666     if (!ret->fbo_key)
1667         goto out;
1668
1669     ret->free_timestamp_query_size = 4;
1670     if (!(ret->free_timestamp_queries = wined3d_calloc(ret->free_timestamp_query_size,
1671             sizeof(*ret->free_timestamp_queries))))
1672         goto out;
1673     list_init(&ret->timestamp_queries);
1674
1675     ret->free_occlusion_query_size = 4;
1676     if (!(ret->free_occlusion_queries = wined3d_calloc(ret->free_occlusion_query_size,
1677             sizeof(*ret->free_occlusion_queries))))
1678         goto out;
1679
1680     list_init(&ret->occlusion_queries);
1681
1682     ret->free_event_query_size = 4;
1683     if (!(ret->free_event_queries = wined3d_calloc(ret->free_event_query_size,
1684             sizeof(*ret->free_event_queries))))
1685         goto out;
1686
1687     list_init(&ret->event_queries);
1688     list_init(&ret->fbo_list);
1689     list_init(&ret->fbo_destroy_list);
1690
1691     if (!device->shader_backend->shader_allocate_context_data(ret))
1692     {
1693         ERR("Failed to allocate shader backend context data.\n");
1694         goto out;
1695     }
1696     if (!device->adapter->fragment_pipe->allocate_context_data(ret))
1697     {
1698         ERR("Failed to allocate fragment pipeline context data.\n");
1699         goto out;
1700     }
1701
1702     /* Initialize the texture unit mapping to a 1:1 mapping */
1703     for (s = 0; s < MAX_COMBINED_SAMPLERS; ++s)
1704     {
1705         if (s < gl_info->limits.combined_samplers)
1706         {
1707             ret->tex_unit_map[s] = s;
1708             ret->rev_tex_unit_map[s] = s;
1709         }
1710         else
1711         {
1712             ret->tex_unit_map[s] = WINED3D_UNMAPPED_STAGE;
1713             ret->rev_tex_unit_map[s] = WINED3D_UNMAPPED_STAGE;
1714         }
1715     }
1716
1717     if (!(hdc = GetDCEx(swapchain->win_handle, 0, DCX_USESTYLE | DCX_CACHE)))
1718     {
1719         WARN("Failed to retrieve device context, trying swapchain backup.\n");
1720
1721         if ((hdc = swapchain_get_backup_dc(swapchain)))
1722             hdc_is_private = TRUE;
1723         else
1724         {
1725             ERR("Failed to retrieve a device context.\n");
1726             goto out;
1727         }
1728     }
1729
1730     color_format = target->resource.format;
1731
1732     /* In case of ORM_BACKBUFFER, make sure to request an alpha component for
1733      * X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
1734     if (wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER)
1735     {
1736         auxBuffers = TRUE;
1737
1738         if (color_format->id == WINED3DFMT_B4G4R4X4_UNORM)
1739             color_format = wined3d_get_format(gl_info, WINED3DFMT_B4G4R4A4_UNORM);
1740         else if (color_format->id == WINED3DFMT_B8G8R8X8_UNORM)
1741             color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1742     }
1743
1744     /* DirectDraw supports 8bit paletted render targets and these are used by
1745      * old games like StarCraft and C&C. Most modern hardware doesn't support
1746      * 8bit natively so we perform some form of 8bit -> 32bit conversion. The
1747      * conversion (ab)uses the alpha component for storing the palette index.
1748      * For this reason we require a format with 8bit alpha, so request
1749      * A8R8G8B8. */
1750     if (color_format->id == WINED3DFMT_P8_UINT)
1751         color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1752
1753     /* When "always_offscreen" is enabled, we only use the drawable for
1754      * presentation blits, and don't do any rendering to it. That means we
1755      * don't need depth or stencil buffers, and can mostly ignore the render
1756      * target format. This wouldn't necessarily be quite correct for 10bpc
1757      * display modes, but we don't currently support those.
1758      * Using the same format regardless of the color/depth/stencil targets
1759      * makes it much less likely that different wined3d instances will set
1760      * conflicting pixel formats. */
1761     if (wined3d_settings.offscreen_rendering_mode != ORM_BACKBUFFER
1762             && wined3d_settings.always_offscreen)
1763     {
1764         color_format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
1765         ds_format = wined3d_get_format(gl_info, WINED3DFMT_UNKNOWN);
1766     }
1767
1768     /* Try to find a pixel format which matches our requirements. */
1769     pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, FALSE);
1770
1771     /* Try to locate a compatible format if we weren't able to find anything. */
1772     if (!pixel_format)
1773     {
1774         TRACE("Trying to locate a compatible pixel format because an exact match failed.\n");
1775         pixel_format = context_choose_pixel_format(device, hdc, color_format, ds_format, auxBuffers, TRUE);
1776     }
1777
1778     /* If we still don't have a pixel format, something is very wrong as ChoosePixelFormat barely fails */
1779     if (!pixel_format)
1780     {
1781         ERR("Can't find a suitable pixel format.\n");
1782         goto out;
1783     }
1784
1785     ret->gl_info = gl_info;
1786
1787     context_enter(ret);
1788
1789     if (!context_set_pixel_format(ret, hdc, hdc_is_private, pixel_format))
1790     {
1791         ERR("Failed to set pixel format %d on device context %p.\n", pixel_format, hdc);
1792         context_release(ret);
1793         goto out;
1794     }
1795
1796     share_ctx = device->context_count ? device->contexts[0]->glCtx : NULL;
1797     if (gl_info->p_wglCreateContextAttribsARB)
1798     {
1799         if (!(ctx = context_create_wgl_attribs(gl_info, hdc, share_ctx)))
1800             goto out;
1801     }
1802     else
1803     {
1804         if (!(ctx = wglCreateContext(hdc)))
1805         {
1806             ERR("Failed to create a WGL context.\n");
1807             context_release(ret);
1808             goto out;
1809         }
1810
1811         if (share_ctx && !wglShareLists(share_ctx, ctx))
1812         {
1813             ERR("wglShareLists(%p, %p) failed, last error %#x.\n", share_ctx, ctx, GetLastError());
1814             context_release(ret);
1815             if (!wglDeleteContext(ctx))
1816                 ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1817             goto out;
1818         }
1819     }
1820
1821     if (!device_context_add(device, ret))
1822     {
1823         ERR("Failed to add the newly created context to the context list\n");
1824         context_release(ret);
1825         if (!wglDeleteContext(ctx))
1826             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1827         goto out;
1828     }
1829
1830     ret->d3d_info = &device->adapter->d3d_info;
1831     ret->state_table = device->StateTable;
1832
1833     /* Mark all states dirty to force a proper initialization of the states
1834      * on the first use of the context. */
1835     for (state = 0; state <= STATE_HIGHEST; ++state)
1836     {
1837         if (ret->state_table[state].representative)
1838             context_invalidate_state(ret, state);
1839     }
1840
1841     ret->swapchain = swapchain;
1842     ret->current_rt.texture = target;
1843     ret->current_rt.sub_resource_idx = 0;
1844     ret->tid = GetCurrentThreadId();
1845
1846     ret->render_offscreen = wined3d_resource_is_offscreen(&target->resource);
1847     ret->draw_buffers_mask = context_generate_rt_mask(GL_BACK);
1848     ret->valid = 1;
1849
1850     ret->glCtx = ctx;
1851     ret->win_handle = swapchain->win_handle;
1852     ret->hdc = hdc;
1853     ret->hdc_is_private = hdc_is_private;
1854     ret->hdc_has_format = TRUE;
1855     ret->pixel_format = pixel_format;
1856     ret->needs_set = 1;
1857
1858     /* Set up the context defaults */
1859     if (!context_set_current(ret))
1860     {
1861         ERR("Cannot activate context to set up defaults.\n");
1862         device_context_remove(device, ret);
1863         context_release(ret);
1864         if (!wglDeleteContext(ctx))
1865             ERR("wglDeleteContext(%p) failed, last error %#x.\n", ctx, GetLastError());
1866         goto out;
1867     }
1868
1869     if (context_debug_output_enabled(gl_info))
1870     {
1871         GL_EXTCALL(glDebugMessageCallback(wined3d_debug_callback, ret));
1872         if (TRACE_ON(d3d_synchronous))
1873             gl_info->gl_ops.gl.p_glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
1874         GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_FALSE));
1875         if (ERR_ON(d3d))
1876         {
1877             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_ERROR,
1878                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1879         }
1880         if (FIXME_ON(d3d))
1881         {
1882             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR,
1883                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1884             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR,
1885                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1886             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_PORTABILITY,
1887                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1888         }
1889         if (WARN_ON(d3d_perf))
1890         {
1891             GL_EXTCALL(glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_PERFORMANCE,
1892                     GL_DONT_CARE, 0, NULL, GL_TRUE));
1893         }
1894     }
1895
1896     gl_info->gl_ops.gl.p_glGetIntegerv(GL_AUX_BUFFERS, &ret->aux_buffers);
1897
1898     TRACE("Setting up the screen\n");
1899
1900     if (gl_info->supported[WINED3D_GL_LEGACY_CONTEXT])
1901     {
1902         gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
1903         checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
1904
1905         gl_info->gl_ops.gl.p_glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
1906         checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
1907
1908         gl_info->gl_ops.gl.p_glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
1909         checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
1910     }
1911     else
1912     {
1913         GLuint vao;
1914
1915         GL_EXTCALL(glGenVertexArrays(1, &vao));
1916         GL_EXTCALL(glBindVertexArray(vao));
1917         checkGLcall("creating VAO");
1918     }
1919
1920     gl_info->gl_ops.gl.p_glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);
1921     checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, device->surface_alignment);");
1922     gl_info->gl_ops.gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
1923     checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, device->surface_alignment);");
1924
1925     if (gl_info->supported[ARB_VERTEX_BLEND])
1926     {
1927         /* Direct3D always uses n-1 weights for n world matrices and uses
1928          * 1 - sum for the last one this is equal to GL_WEIGHT_SUM_UNITY_ARB.
1929          * Enabling it doesn't do anything unless GL_VERTEX_BLEND_ARB isn't
1930          * enabled as well. */
1931         gl_info->gl_ops.gl.p_glEnable(GL_WEIGHT_SUM_UNITY_ARB);
1932         checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
1933     }
1934     if (gl_info->supported[NV_TEXTURE_SHADER2])
1935     {
1936         /* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
1937          * the previous texture where to source the offset from is always unit - 1.
1938          */
1939         for (s = 1; s < gl_info->limits.textures; ++s)
1940         {
1941             context_active_texture(ret, gl_info, s);
1942             gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_SHADER_NV,
1943                     GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
1944             checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...");
1945         }
1946     }
1947     if (gl_info->supported[ARB_FRAGMENT_PROGRAM])
1948     {
1949         /* MacOS(radeon X1600 at least, but most likely others too) refuses to draw if GLSL and ARBFP are
1950          * enabled, but the currently bound arbfp program is 0. Enabling ARBFP with prog 0 is invalid, but
1951          * GLSL should bypass this. This causes problems in programs that never use the fixed function pipeline,
1952          * because the ARBFP extension is enabled by the ARBFP pipeline at context creation, but no program
1953          * is ever assigned.
1954          *
1955          * So make sure a program is assigned to each context. The first real ARBFP use will set a different
1956          * program and the dummy program is destroyed when the context is destroyed.
1957          */
1958         static const char dummy_program[] =
1959                 "!!ARBfp1.0\n"
1960                 "MOV result.color, fragment.color.primary;\n"
1961                 "END\n";
1962         GL_EXTCALL(glGenProgramsARB(1, &ret->dummy_arbfp_prog));
1963         GL_EXTCALL(glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, ret->dummy_arbfp_prog));
1964         GL_EXTCALL(glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, strlen(dummy_program), dummy_program));
1965     }
1966
1967     if (gl_info->supported[ARB_POINT_SPRITE])
1968     {
1969         for (s = 0; s < gl_info->limits.textures; ++s)
1970         {
1971             context_active_texture(ret, gl_info, s);
1972             gl_info->gl_ops.gl.p_glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
1973             checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)");
1974         }
1975     }
1976
1977     if (gl_info->supported[ARB_PROVOKING_VERTEX])
1978     {
1979         GL_EXTCALL(glProvokingVertex(GL_FIRST_VERTEX_CONVENTION));
1980     }
1981     else if (gl_info->supported[EXT_PROVOKING_VERTEX])
1982     {
1983         GL_EXTCALL(glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT));
1984     }
1985     device->shader_backend->shader_init_context_state(ret);
1986     ret->shader_update_mask = (1u << WINED3D_SHADER_TYPE_PIXEL)
1987             | (1u << WINED3D_SHADER_TYPE_VERTEX)
1988             | (1u << WINED3D_SHADER_TYPE_GEOMETRY)
1989             | (1u << WINED3D_SHADER_TYPE_HULL)
1990             | (1u << WINED3D_SHADER_TYPE_DOMAIN)
1991             | (1u << WINED3D_SHADER_TYPE_COMPUTE);
1992
1993     /* If this happens to be the first context for the device, dummy textures
1994      * are not created yet. In that case, they will be created (and bound) by
1995      * create_dummy_textures right after this context is initialized. */
1996     if (device->dummy_texture_2d[0])
1997         bind_dummy_textures(device, ret);
1998
1999     TRACE("Created context %p.\n", ret);
2000
2001     return ret;
2002
2003 out:
2004     if (hdc) wined3d_release_dc(swapchain->win_handle, hdc);
2005     device->shader_backend->shader_free_context_data(ret);
2006     device->adapter->fragment_pipe->free_context_data(ret);
2007     HeapFree(GetProcessHeap(), 0, ret->free_event_queries);
2008     HeapFree(GetProcessHeap(), 0, ret->free_occlusion_queries);
2009     HeapFree(GetProcessHeap(), 0, ret->free_timestamp_queries);
2010     HeapFree(GetProcessHeap(), 0, ret->fbo_key);
2011     HeapFree(GetProcessHeap(), 0, ret->draw_buffers);
2012     HeapFree(GetProcessHeap(), 0, ret->blit_targets);
2013     HeapFree(GetProcessHeap(), 0, ret);
2014     return NULL;
2015 }
2016
2017 void context_destroy(struct wined3d_device *device, struct wined3d_context *context)
2018 {
2019     BOOL destroy;
2020
2021     TRACE("Destroying ctx %p\n", context);
2022
2023     if (context->tid == GetCurrentThreadId() || !context->current)
2024     {
2025         context_destroy_gl_resources(context);
2026         TlsSetValue(wined3d_context_tls_idx, NULL);
2027         destroy = TRUE;
2028     }
2029     else
2030     {
2031         /* Make a copy of gl_info for context_destroy_gl_resources use, the one
2032            in wined3d_adapter may go away in the meantime */
2033         struct wined3d_gl_info *gl_info = HeapAlloc(GetProcessHeap(), 0, sizeof(*gl_info));
2034         *gl_info = *context->gl_info;
2035         context->gl_info = gl_info;
2036         context->destroyed = 1;
2037         destroy = FALSE;
2038     }
2039
2040     device->shader_backend->shader_free_context_data(context);
2041     device->adapter->fragment_pipe->free_context_data(context);
2042     HeapFree(GetProcessHeap(), 0, context->fbo_key);
2043     HeapFree(GetProcessHeap(), 0, context->draw_buffers);
2044     HeapFree(GetProcessHeap(), 0, context->blit_targets);
2045     device_context_remove(device, context);
2046     if (destroy) HeapFree(GetProcessHeap(), 0, context);
2047 }
2048
2049 /* Context activation is done by the caller. */
2050 static void set_blit_dimension(const struct wined3d_gl_info *gl_info, UINT width, UINT height)
2051 {
2052     const GLdouble projection[] =
2053     {
2054         2.0 / width,          0.0,  0.0, 0.0,
2055                 0.0, 2.0 / height,  0.0, 0.0,
2056                 0.0,          0.0,  2.0, 0.0,
2057                -1.0,         -1.0, -1.0, 1.0,
2058     };
2059
2060     gl_info->gl_ops.gl.p_glMatrixMode(GL_PROJECTION);
2061     checkGLcall("glMatrixMode(GL_PROJECTION)");
2062     gl_info->gl_ops.gl.p_glLoadMatrixd(projection);
2063     checkGLcall("glLoadMatrixd");
2064     gl_info->gl_ops.gl.p_glViewport(0, 0, width, height);
2065     checkGLcall("glViewport");
2066 }
2067
2068 static void context_get_rt_size(const struct wined3d_context *context, SIZE *size)
2069 {
2070     const struct wined3d_texture *rt = context->current_rt.texture;
2071     unsigned int level;
2072
2073     if (rt->swapchain && rt->swapchain->front_buffer == rt)
2074     {
2075         RECT window_size;
2076
2077         GetClientRect(context->win_handle, &window_size);
2078         size->cx = window_size.right - window_size.left;
2079         size->cy = window_size.bottom - window_size.top;
2080
2081         return;
2082     }
2083
2084     level = context->current_rt.sub_resource_idx % rt->level_count;
2085     size->cx = wined3d_texture_get_level_width(rt, level);
2086     size->cy = wined3d_texture_get_level_height(rt, level);
2087 }
2088
2089 /*****************************************************************************
2090  * SetupForBlit
2091  *
2092  * Sets up a context for DirectDraw blitting.
2093  * All texture units are disabled, texture unit 0 is set as current unit
2094  * fog, lighting, blending, alpha test, z test, scissor test, culling disabled
2095  * color writing enabled for all channels
2096  * register combiners disabled, shaders disabled
2097  * world matrix is set to identity, texture matrix 0 too
2098  * projection matrix is setup for drawing screen coordinates
2099  *
2100  * Params:
2101  *  This: Device to activate the context for
2102  *  context: Context to setup
2103  *
2104  *****************************************************************************/
2105 /* Context activation is done by the caller. */
2106 static void SetupForBlit(const struct wined3d_device *device, struct wined3d_context *context)
2107 {
2108     int i;
2109     const struct wined3d_gl_info *gl_info = context->gl_info;
2110     DWORD sampler;
2111     SIZE rt_size;
2112
2113     TRACE("Setting up context %p for blitting\n", context);
2114
2115     context_get_rt_size(context, &rt_size);
2116
2117     if (context->last_was_blit)
2118     {
2119         if (context->blit_w != rt_size.cx || context->blit_h != rt_size.cy)
2120         {
2121             set_blit_dimension(gl_info, rt_size.cx, rt_size.cy);
2122             context->blit_w = rt_size.cx;
2123             context->blit_h = rt_size.cy;
2124             /* No need to dirtify here, the states are still dirtified because
2125              * they weren't applied since the last SetupForBlit() call. */
2126         }
2127         TRACE("Context is already set up for blitting, nothing to do\n");
2128         return;
2129     }
2130     context->last_was_blit = TRUE;
2131
2132     /* Disable all textures. The caller can then bind a texture it wants to blit
2133      * from
2134      *
2135      * The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
2136      * function texture unit. No need to care for higher samplers
2137      */
2138     for (i = gl_info->limits.textures - 1; i > 0 ; --i)
2139     {
2140         sampler = context->rev_tex_unit_map[i];
2141         context_active_texture(context, gl_info, i);
2142
2143         if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
2144         {
2145             gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
2146             checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
2147         }
2148         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
2149         checkGLcall("glDisable GL_TEXTURE_3D");
2150         if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
2151         {
2152             gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
2153             checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
2154         }
2155         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
2156         checkGLcall("glDisable GL_TEXTURE_2D");
2157
2158         gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
2159         checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
2160
2161         if (sampler != WINED3D_UNMAPPED_STAGE)
2162         {
2163             if (sampler < MAX_TEXTURES)
2164                 context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_COLOR_OP));
2165             context_invalidate_state(context, STATE_SAMPLER(sampler));
2166         }
2167     }
2168     if (gl_info->supported[ARB_SAMPLER_OBJECTS])
2169         GL_EXTCALL(glBindSampler(0, 0));
2170     context_active_texture(context, gl_info, 0);
2171
2172     sampler = context->rev_tex_unit_map[0];
2173
2174     if (gl_info->supported[ARB_TEXTURE_CUBE_MAP])
2175     {
2176         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_CUBE_MAP_ARB);
2177         checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
2178     }
2179     gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_3D);
2180     checkGLcall("glDisable GL_TEXTURE_3D");
2181     if (gl_info->supported[ARB_TEXTURE_RECTANGLE])
2182     {
2183         gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_RECTANGLE_ARB);
2184         checkGLcall("glDisable GL_TEXTURE_RECTANGLE_ARB");
2185     }
2186     gl_info->gl_ops.gl.p_glDisable(GL_TEXTURE_2D);
2187     checkGLcall("glDisable GL_TEXTURE_2D");
2188
2189     gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
2190
2191     gl_info->gl_ops.gl.p_glMatrixMode(GL_TEXTURE);
2192     checkGLcall("glMatrixMode(GL_TEXTURE)");
2193     gl_info->gl_ops.gl.p_glLoadIdentity();
2194     checkGLcall("glLoadIdentity()");
2195
2196     if (gl_info->supported[EXT_TEXTURE_LOD_BIAS])
2197     {
2198         gl_info->gl_ops.gl.p_glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
2199                 GL_TEXTURE_LOD_BIAS_EXT, 0.0f);
2200         checkGLcall("glTexEnvf GL_TEXTURE_LOD_BIAS_EXT ...");
2201     }
2202
2203     if (sampler != WINED3D_UNMAPPED_STAGE)
2204     {
2205         if (sampler < MAX_TEXTURES)
2206         {
2207             context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_TEXTURE0 + sampler));
2208             context_invalidate_state(context, STATE_TEXTURESTAGE(sampler, WINED3D_TSS_COLOR_OP));
2209         }
2210         context_invalidate_state(context, STATE_SAMPLER(sampler));
2211     }
2212
2213     /* Other misc states */
2214     gl_info->gl_ops.gl.p_glDisable(GL_ALPHA_TEST);
2215     checkGLcall("glDisable(GL_ALPHA_TEST)");
2216     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHATESTENABLE));
2217     gl_info->gl_ops.gl.p_glDisable(GL_LIGHTING);
2218     checkGLcall("glDisable GL_LIGHTING");
2219     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_LIGHTING));
2220     gl_info->gl_ops.gl.p_glDisable(GL_DEPTH_TEST);
2221     checkGLcall("glDisable GL_DEPTH_TEST");
2222     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ZENABLE));
2223     glDisableWINE(GL_FOG);
2224     checkGLcall("glDisable GL_FOG");
2225     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_FOGENABLE));
2226     gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
2227     checkGLcall("glDisable GL_BLEND");
2228     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2229     gl_info->gl_ops.gl.p_glDisable(GL_CULL_FACE);
2230     checkGLcall("glDisable GL_CULL_FACE");
2231     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_CULLMODE));
2232     gl_info->gl_ops.gl.p_glDisable(GL_STENCIL_TEST);
2233     checkGLcall("glDisable GL_STENCIL_TEST");
2234     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_STENCILENABLE));
2235     gl_info->gl_ops.gl.p_glDisable(GL_SCISSOR_TEST);
2236     checkGLcall("glDisable GL_SCISSOR_TEST");
2237     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
2238     if (gl_info->supported[ARB_POINT_SPRITE])
2239     {
2240         gl_info->gl_ops.gl.p_glDisable(GL_POINT_SPRITE_ARB);
2241         checkGLcall("glDisable GL_POINT_SPRITE_ARB");
2242         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_POINTSPRITEENABLE));
2243     }
2244     gl_info->gl_ops.gl.p_glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
2245     checkGLcall("glColorMask");
2246     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
2247     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
2248     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
2249     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
2250     if (gl_info->supported[EXT_SECONDARY_COLOR])
2251     {
2252         gl_info->gl_ops.gl.p_glDisable(GL_COLOR_SUM_EXT);
2253         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SPECULARENABLE));
2254         checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
2255     }
2256
2257     /* Setup transforms */
2258     gl_info->gl_ops.gl.p_glMatrixMode(GL_MODELVIEW);
2259     checkGLcall("glMatrixMode(GL_MODELVIEW)");
2260     gl_info->gl_ops.gl.p_glLoadIdentity();
2261     checkGLcall("glLoadIdentity()");
2262     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_WORLD_MATRIX(0)));
2263
2264     context->last_was_rhw = TRUE;
2265     context_invalidate_state(context, STATE_VDECL); /* because of last_was_rhw = TRUE */
2266
2267     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
2268     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
2269     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
2270     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
2271     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
2272     gl_info->gl_ops.gl.p_glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
2273     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_CLIPPING));
2274
2275     set_blit_dimension(gl_info, rt_size.cx, rt_size.cy);
2276
2277     /* Disable shaders */
2278     device->shader_backend->shader_disable(device->shader_priv, context);
2279
2280     context->blit_w = rt_size.cx;
2281     context->blit_h = rt_size.cy;
2282     context_invalidate_state(context, STATE_VIEWPORT);
2283     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
2284 }
2285
2286 static inline BOOL is_rt_mask_onscreen(DWORD rt_mask)
2287 {
2288     return rt_mask & (1u << 31);
2289 }
2290
2291 static inline GLenum draw_buffer_from_rt_mask(DWORD rt_mask)
2292 {
2293     return rt_mask & ~(1u << 31);
2294 }
2295
2296 /* Context activation is done by the caller. */
2297 static void context_apply_draw_buffers(struct wined3d_context *context, DWORD rt_mask)
2298 {
2299     const struct wined3d_gl_info *gl_info = context->gl_info;
2300
2301     if (!rt_mask)
2302     {
2303         gl_info->gl_ops.gl.p_glDrawBuffer(GL_NONE);
2304         checkGLcall("glDrawBuffer()");
2305     }
2306     else if (is_rt_mask_onscreen(rt_mask))
2307     {
2308         gl_info->gl_ops.gl.p_glDrawBuffer(draw_buffer_from_rt_mask(rt_mask));
2309         checkGLcall("glDrawBuffer()");
2310     }
2311     else
2312     {
2313         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2314         {
2315             unsigned int i = 0;
2316
2317             while (rt_mask)
2318             {
2319                 if (rt_mask & 1)
2320                     context->draw_buffers[i] = GL_COLOR_ATTACHMENT0 + i;
2321                 else
2322                     context->draw_buffers[i] = GL_NONE;
2323
2324                 rt_mask >>= 1;
2325                 ++i;
2326             }
2327
2328             if (gl_info->supported[ARB_DRAW_BUFFERS])
2329             {
2330                 GL_EXTCALL(glDrawBuffers(i, context->draw_buffers));
2331                 checkGLcall("glDrawBuffers()");
2332             }
2333             else
2334             {
2335                 gl_info->gl_ops.gl.p_glDrawBuffer(context->draw_buffers[0]);
2336                 checkGLcall("glDrawBuffer()");
2337             }
2338         }
2339         else
2340         {
2341             ERR("Unexpected draw buffers mask with backbuffer ORM.\n");
2342         }
2343     }
2344 }
2345
2346 /* Context activation is done by the caller. */
2347 void context_set_draw_buffer(struct wined3d_context *context, GLenum buffer)
2348 {
2349     const struct wined3d_gl_info *gl_info = context->gl_info;
2350     DWORD *current_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2351     DWORD new_mask = context_generate_rt_mask(buffer);
2352
2353     if (new_mask == *current_mask)
2354         return;
2355
2356     gl_info->gl_ops.gl.p_glDrawBuffer(buffer);
2357     checkGLcall("glDrawBuffer()");
2358
2359     *current_mask = new_mask;
2360 }
2361
2362 /* Context activation is done by the caller. */
2363 void context_active_texture(struct wined3d_context *context, const struct wined3d_gl_info *gl_info, unsigned int unit)
2364 {
2365     GL_EXTCALL(glActiveTexture(GL_TEXTURE0 + unit));
2366     checkGLcall("glActiveTexture");
2367     context->active_texture = unit;
2368 }
2369
2370 void context_bind_texture(struct wined3d_context *context, GLenum target, GLuint name)
2371 {
2372     const struct wined3d_gl_info *gl_info = context->gl_info;
2373     DWORD unit = context->active_texture;
2374     DWORD old_texture_type = context->texture_type[unit];
2375
2376     if (name)
2377     {
2378         gl_info->gl_ops.gl.p_glBindTexture(target, name);
2379         checkGLcall("glBindTexture");
2380     }
2381     else
2382     {
2383         target = GL_NONE;
2384     }
2385
2386     if (old_texture_type != target)
2387     {
2388         const struct wined3d_device *device = context->swapchain->device;
2389
2390         switch (old_texture_type)
2391         {
2392             case GL_NONE:
2393                 /* nothing to do */
2394                 break;
2395             case GL_TEXTURE_2D:
2396                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D, device->dummy_texture_2d[unit]);
2397                 checkGLcall("glBindTexture");
2398                 break;
2399             case GL_TEXTURE_2D_ARRAY:
2400                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D_ARRAY, device->dummy_texture_2d_array[unit]);
2401                 checkGLcall("glBindTexture");
2402                 break;
2403             case GL_TEXTURE_RECTANGLE_ARB:
2404                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_RECTANGLE_ARB, device->dummy_texture_rect[unit]);
2405                 checkGLcall("glBindTexture");
2406                 break;
2407             case GL_TEXTURE_CUBE_MAP:
2408                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_CUBE_MAP, device->dummy_texture_cube[unit]);
2409                 checkGLcall("glBindTexture");
2410                 break;
2411             case GL_TEXTURE_3D:
2412                 gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_3D, device->dummy_texture_3d[unit]);
2413                 checkGLcall("glBindTexture");
2414                 break;
2415             default:
2416                 ERR("Unexpected texture target %#x.\n", old_texture_type);
2417         }
2418
2419         context->texture_type[unit] = target;
2420     }
2421 }
2422
2423 static void context_set_render_offscreen(struct wined3d_context *context, BOOL offscreen)
2424 {
2425     if (context->render_offscreen == offscreen) return;
2426
2427     context_invalidate_state(context, STATE_POINTSPRITECOORDORIGIN);
2428     context_invalidate_state(context, STATE_TRANSFORM(WINED3D_TS_PROJECTION));
2429     context_invalidate_state(context, STATE_VIEWPORT);
2430     context_invalidate_state(context, STATE_SCISSORRECT);
2431     context_invalidate_state(context, STATE_FRONTFACE);
2432     context->render_offscreen = offscreen;
2433 }
2434
2435 static BOOL match_depth_stencil_format(const struct wined3d_format *existing,
2436         const struct wined3d_format *required)
2437 {
2438     if (existing == required)
2439         return TRUE;
2440     if ((existing->flags[WINED3D_GL_RES_TYPE_TEX_2D] & WINED3DFMT_FLAG_FLOAT)
2441             != (required->flags[WINED3D_GL_RES_TYPE_TEX_2D] & WINED3DFMT_FLAG_FLOAT))
2442         return FALSE;
2443     if (existing->depth_size < required->depth_size)
2444         return FALSE;
2445     /* If stencil bits are used the exact amount is required - otherwise
2446      * wrapping won't work correctly. */
2447     if (required->stencil_size && required->stencil_size != existing->stencil_size)
2448         return FALSE;
2449     return TRUE;
2450 }
2451
2452 /* Context activation is done by the caller. */
2453 static void context_validate_onscreen_formats(struct wined3d_context *context,
2454         const struct wined3d_rendertarget_view *depth_stencil)
2455 {
2456     /* Onscreen surfaces are always in a swapchain */
2457     struct wined3d_swapchain *swapchain = context->current_rt.texture->swapchain;
2458     struct wined3d_surface *surface;
2459
2460     if (context->render_offscreen || !depth_stencil) return;
2461     if (match_depth_stencil_format(swapchain->ds_format, depth_stencil->format)) return;
2462
2463     /* TODO: If the requested format would satisfy the needs of the existing one(reverse match),
2464      * or no onscreen depth buffer was created, the OpenGL drawable could be changed to the new
2465      * format. */
2466     WARN("Depth stencil format is not supported by WGL, rendering the backbuffer in an FBO\n");
2467
2468     /* The currently active context is the necessary context to access the swapchain's onscreen buffers */
2469     surface = context->current_rt.texture->sub_resources[context->current_rt.sub_resource_idx].u.surface;
2470     surface_load_location(surface, context, WINED3D_LOCATION_TEXTURE_RGB);
2471     swapchain->render_to_fbo = TRUE;
2472     swapchain_update_draw_bindings(swapchain);
2473     context_set_render_offscreen(context, TRUE);
2474 }
2475
2476 GLenum context_get_offscreen_gl_buffer(const struct wined3d_context *context)
2477 {
2478     switch (wined3d_settings.offscreen_rendering_mode)
2479     {
2480         case ORM_FBO:
2481             return GL_COLOR_ATTACHMENT0;
2482
2483         case ORM_BACKBUFFER:
2484             return context->aux_buffers > 0 ? GL_AUX0 : GL_BACK;
2485
2486         default:
2487             FIXME("Unhandled offscreen rendering mode %#x.\n", wined3d_settings.offscreen_rendering_mode);
2488             return GL_BACK;
2489     }
2490 }
2491
2492 static DWORD context_generate_rt_mask_no_fbo(const struct wined3d_context *context, struct wined3d_texture *rt)
2493 {
2494     if (!rt || rt->resource.format->id == WINED3DFMT_NULL)
2495         return 0;
2496     else if (rt->swapchain)
2497         return context_generate_rt_mask_from_resource(&rt->resource);
2498     else
2499         return context_generate_rt_mask(context_get_offscreen_gl_buffer(context));
2500 }
2501
2502 /* Context activation is done by the caller. */
2503 void context_apply_blit_state(struct wined3d_context *context, const struct wined3d_device *device)
2504 {
2505     struct wined3d_texture *rt = context->current_rt.texture;
2506     struct wined3d_surface *surface;
2507     DWORD rt_mask, *cur_mask;
2508
2509     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2510     {
2511         context_validate_onscreen_formats(context, NULL);
2512
2513         if (context->render_offscreen)
2514         {
2515             wined3d_texture_load(rt, context, FALSE);
2516
2517             surface = rt->sub_resources[context->current_rt.sub_resource_idx].u.surface;
2518             context_apply_fbo_state_blit(context, GL_FRAMEBUFFER, surface, NULL, rt->resource.draw_binding);
2519             if (rt->resource.format->id != WINED3DFMT_NULL)
2520                 rt_mask = 1;
2521             else
2522                 rt_mask = 0;
2523         }
2524         else
2525         {
2526             context->current_fbo = NULL;
2527             context_bind_fbo(context, GL_FRAMEBUFFER, 0);
2528             rt_mask = context_generate_rt_mask_from_resource(&rt->resource);
2529         }
2530     }
2531     else
2532     {
2533         rt_mask = context_generate_rt_mask_no_fbo(context, rt);
2534     }
2535
2536     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2537
2538     if (rt_mask != *cur_mask)
2539     {
2540         context_apply_draw_buffers(context, rt_mask);
2541         *cur_mask = rt_mask;
2542     }
2543
2544     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2545     {
2546         context_check_fbo_status(context, GL_FRAMEBUFFER);
2547     }
2548
2549     SetupForBlit(device, context);
2550     context_invalidate_state(context, STATE_FRAMEBUFFER);
2551 }
2552
2553 static BOOL context_validate_rt_config(UINT rt_count, struct wined3d_rendertarget_view * const *rts,
2554         const struct wined3d_rendertarget_view *ds)
2555 {
2556     unsigned int i;
2557
2558     if (ds) return TRUE;
2559
2560     for (i = 0; i < rt_count; ++i)
2561     {
2562         if (rts[i] && rts[i]->format->id != WINED3DFMT_NULL)
2563             return TRUE;
2564     }
2565
2566     WARN("Invalid render target config, need at least one attachment.\n");
2567     return FALSE;
2568 }
2569
2570 /* Context activation is done by the caller. */
2571 BOOL context_apply_clear_state(struct wined3d_context *context, const struct wined3d_state *state,
2572         UINT rt_count, const struct wined3d_fb_state *fb)
2573 {
2574     struct wined3d_rendertarget_view **rts = fb->render_targets;
2575     struct wined3d_rendertarget_view *dsv = fb->depth_stencil;
2576     const struct wined3d_gl_info *gl_info = context->gl_info;
2577     DWORD rt_mask = 0, *cur_mask;
2578     UINT i;
2579
2580     if (isStateDirty(context, STATE_FRAMEBUFFER) || fb != state->fb
2581             || rt_count != gl_info->limits.buffers)
2582     {
2583         if (!context_validate_rt_config(rt_count, rts, dsv))
2584             return FALSE;
2585
2586         if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2587         {
2588             context_validate_onscreen_formats(context, dsv);
2589
2590             if (!rt_count || wined3d_resource_is_offscreen(rts[0]->resource))
2591             {
2592                 for (i = 0; i < rt_count; ++i)
2593                 {
2594                     context->blit_targets[i] = wined3d_rendertarget_view_get_surface(rts[i]);
2595                     if (rts[i] && rts[i]->format->id != WINED3DFMT_NULL)
2596                         rt_mask |= (1u << i);
2597                 }
2598                 while (i < gl_info->limits.buffers)
2599                 {
2600                     context->blit_targets[i] = NULL;
2601                     ++i;
2602                 }
2603                 context_apply_fbo_state(context, GL_FRAMEBUFFER, context->blit_targets,
2604                         wined3d_rendertarget_view_get_surface(dsv),
2605                         rt_count ? rts[0]->resource->draw_binding : 0,
2606                         dsv ? dsv->resource->draw_binding : 0);
2607             }
2608             else
2609             {
2610                 context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL,
2611                         WINED3D_LOCATION_DRAWABLE, WINED3D_LOCATION_DRAWABLE);
2612                 rt_mask = context_generate_rt_mask_from_resource(rts[0]->resource);
2613             }
2614
2615             /* If the framebuffer is not the device's fb the device's fb has to be reapplied
2616              * next draw. Otherwise we could mark the framebuffer state clean here, once the
2617              * state management allows this */
2618             context_invalidate_state(context, STATE_FRAMEBUFFER);
2619         }
2620         else
2621         {
2622             rt_mask = context_generate_rt_mask_no_fbo(context,
2623                     rt_count ? wined3d_rendertarget_view_get_surface(rts[0])->container : NULL);
2624         }
2625     }
2626     else if (wined3d_settings.offscreen_rendering_mode == ORM_FBO
2627             && (!rt_count || wined3d_resource_is_offscreen(rts[0]->resource)))
2628     {
2629         for (i = 0; i < rt_count; ++i)
2630         {
2631             if (rts[i] && rts[i]->format->id != WINED3DFMT_NULL)
2632                 rt_mask |= (1u << i);
2633         }
2634     }
2635     else
2636     {
2637         rt_mask = context_generate_rt_mask_no_fbo(context,
2638                 rt_count ? wined3d_rendertarget_view_get_surface(rts[0])->container : NULL);
2639     }
2640
2641     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2642
2643     if (rt_mask != *cur_mask)
2644     {
2645         context_apply_draw_buffers(context, rt_mask);
2646         *cur_mask = rt_mask;
2647         context_invalidate_state(context, STATE_FRAMEBUFFER);
2648     }
2649
2650     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2651     {
2652         context_check_fbo_status(context, GL_FRAMEBUFFER);
2653     }
2654
2655     if (context->last_was_blit)
2656         context->last_was_blit = FALSE;
2657
2658     /* Blending and clearing should be orthogonal, but tests on the nvidia
2659      * driver show that disabling blending when clearing improves the clearing
2660      * performance incredibly. */
2661     gl_info->gl_ops.gl.p_glDisable(GL_BLEND);
2662     gl_info->gl_ops.gl.p_glEnable(GL_SCISSOR_TEST);
2663     if (rt_count && gl_info->supported[ARB_FRAMEBUFFER_SRGB])
2664     {
2665         if (needs_srgb_write(context, state, fb))
2666             gl_info->gl_ops.gl.p_glEnable(GL_FRAMEBUFFER_SRGB);
2667         else
2668             gl_info->gl_ops.gl.p_glDisable(GL_FRAMEBUFFER_SRGB);
2669         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SRGBWRITEENABLE));
2670     }
2671     checkGLcall("setting up state for clear");
2672
2673     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
2674     context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
2675     context_invalidate_state(context, STATE_SCISSORRECT);
2676
2677     return TRUE;
2678 }
2679
2680 static DWORD find_draw_buffers_mask(const struct wined3d_context *context, const struct wined3d_state *state)
2681 {
2682     struct wined3d_rendertarget_view **rts = state->fb->render_targets;
2683     struct wined3d_shader *ps = state->shader[WINED3D_SHADER_TYPE_PIXEL];
2684     DWORD rt_mask, rt_mask_bits;
2685     unsigned int i;
2686
2687     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
2688         return context_generate_rt_mask_no_fbo(context, wined3d_rendertarget_view_get_surface(rts[0])->container);
2689     else if (!context->render_offscreen)
2690         return context_generate_rt_mask_from_resource(rts[0]->resource);
2691
2692     rt_mask = ps ? ps->reg_maps.rt_mask : 1;
2693     rt_mask &= context->d3d_info->valid_rt_mask;
2694     rt_mask_bits = rt_mask;
2695     i = 0;
2696     while (rt_mask_bits)
2697     {
2698         rt_mask_bits &= ~(1u << i);
2699         if (!rts[i] || rts[i]->format->id == WINED3DFMT_NULL)
2700             rt_mask &= ~(1u << i);
2701
2702         i++;
2703     }
2704
2705     return rt_mask;
2706 }
2707
2708 /* Context activation is done by the caller. */
2709 void context_state_fb(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2710 {
2711     DWORD rt_mask = find_draw_buffers_mask(context, state);
2712     const struct wined3d_fb_state *fb = state->fb;
2713     DWORD *cur_mask;
2714
2715     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
2716     {
2717         if (!context->render_offscreen)
2718         {
2719             context_apply_fbo_state(context, GL_FRAMEBUFFER, NULL, NULL,
2720                     WINED3D_LOCATION_DRAWABLE, WINED3D_LOCATION_DRAWABLE);
2721         }
2722         else
2723         {
2724             unsigned int i;
2725
2726             for (i = 0; i < context->gl_info->limits.buffers; ++i)
2727             {
2728                 context->blit_targets[i] = wined3d_rendertarget_view_get_surface(fb->render_targets[i]);
2729             }
2730             context_apply_fbo_state(context, GL_FRAMEBUFFER, context->blit_targets,
2731                     wined3d_rendertarget_view_get_surface(fb->depth_stencil),
2732                     fb->render_targets[0] ? fb->render_targets[0]->resource->draw_binding : 0,
2733                     fb->depth_stencil ? fb->depth_stencil->resource->draw_binding : 0);
2734         }
2735     }
2736
2737     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2738     if (rt_mask != *cur_mask)
2739     {
2740         context_apply_draw_buffers(context, rt_mask);
2741         *cur_mask = rt_mask;
2742     }
2743 }
2744
2745 static void context_map_stage(struct wined3d_context *context, DWORD stage, DWORD unit)
2746 {
2747     DWORD i = context->rev_tex_unit_map[unit];
2748     DWORD j = context->tex_unit_map[stage];
2749
2750     TRACE("Mapping stage %u to unit %u.\n", stage, unit);
2751     context->tex_unit_map[stage] = unit;
2752     if (i != WINED3D_UNMAPPED_STAGE && i != stage)
2753         context->tex_unit_map[i] = WINED3D_UNMAPPED_STAGE;
2754
2755     context->rev_tex_unit_map[unit] = stage;
2756     if (j != WINED3D_UNMAPPED_STAGE && j != unit)
2757         context->rev_tex_unit_map[j] = WINED3D_UNMAPPED_STAGE;
2758 }
2759
2760 static void context_invalidate_texture_stage(struct wined3d_context *context, DWORD stage)
2761 {
2762     DWORD i;
2763
2764     for (i = 0; i <= WINED3D_HIGHEST_TEXTURE_STATE; ++i)
2765         context_invalidate_state(context, STATE_TEXTURESTAGE(stage, i));
2766 }
2767
2768 static void context_update_fixed_function_usage_map(struct wined3d_context *context,
2769         const struct wined3d_state *state)
2770 {
2771     UINT i, start, end;
2772
2773     context->fixed_function_usage_map = 0;
2774     for (i = 0; i < MAX_TEXTURES; ++i)
2775     {
2776         enum wined3d_texture_op color_op = state->texture_states[i][WINED3D_TSS_COLOR_OP];
2777         enum wined3d_texture_op alpha_op = state->texture_states[i][WINED3D_TSS_ALPHA_OP];
2778         DWORD color_arg1 = state->texture_states[i][WINED3D_TSS_COLOR_ARG1] & WINED3DTA_SELECTMASK;
2779         DWORD color_arg2 = state->texture_states[i][WINED3D_TSS_COLOR_ARG2] & WINED3DTA_SELECTMASK;
2780         DWORD color_arg3 = state->texture_states[i][WINED3D_TSS_COLOR_ARG0] & WINED3DTA_SELECTMASK;
2781         DWORD alpha_arg1 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG1] & WINED3DTA_SELECTMASK;
2782         DWORD alpha_arg2 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG2] & WINED3DTA_SELECTMASK;
2783         DWORD alpha_arg3 = state->texture_states[i][WINED3D_TSS_ALPHA_ARG0] & WINED3DTA_SELECTMASK;
2784
2785         /* Not used, and disable higher stages. */
2786         if (color_op == WINED3D_TOP_DISABLE)
2787             break;
2788
2789         if (((color_arg1 == WINED3DTA_TEXTURE) && color_op != WINED3D_TOP_SELECT_ARG2)
2790                 || ((color_arg2 == WINED3DTA_TEXTURE) && color_op != WINED3D_TOP_SELECT_ARG1)
2791                 || ((color_arg3 == WINED3DTA_TEXTURE)
2792                     && (color_op == WINED3D_TOP_MULTIPLY_ADD || color_op == WINED3D_TOP_LERP))
2793                 || ((alpha_arg1 == WINED3DTA_TEXTURE) && alpha_op != WINED3D_TOP_SELECT_ARG2)
2794                 || ((alpha_arg2 == WINED3DTA_TEXTURE) && alpha_op != WINED3D_TOP_SELECT_ARG1)
2795                 || ((alpha_arg3 == WINED3DTA_TEXTURE)
2796                     && (alpha_op == WINED3D_TOP_MULTIPLY_ADD || alpha_op == WINED3D_TOP_LERP)))
2797             context->fixed_function_usage_map |= (1u << i);
2798
2799         if ((color_op == WINED3D_TOP_BUMPENVMAP || color_op == WINED3D_TOP_BUMPENVMAP_LUMINANCE)
2800                 && i < MAX_TEXTURES - 1)
2801             context->fixed_function_usage_map |= (1u << (i + 1));
2802     }
2803
2804     if (i < context->lowest_disabled_stage)
2805     {
2806         start = i;
2807         end = context->lowest_disabled_stage;
2808     }
2809     else
2810     {
2811         start = context->lowest_disabled_stage;
2812         end = i;
2813     }
2814
2815     context->lowest_disabled_stage = i;
2816     for (i = start + 1; i < end; ++i)
2817     {
2818         context_invalidate_state(context, STATE_TEXTURESTAGE(i, WINED3D_TSS_COLOR_OP));
2819     }
2820 }
2821
2822 static void context_map_fixed_function_samplers(struct wined3d_context *context,
2823         const struct wined3d_state *state)
2824 {
2825     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2826     const struct wined3d_gl_info *gl_info = context->gl_info;
2827     unsigned int i, tex;
2828     WORD ffu_map;
2829
2830     context_update_fixed_function_usage_map(context, state);
2831
2832     if (gl_info->limits.combined_samplers >= MAX_COMBINED_SAMPLERS)
2833         return;
2834
2835     ffu_map = context->fixed_function_usage_map;
2836
2837     if (d3d_info->limits.ffp_textures == d3d_info->limits.ffp_blend_stages
2838             || context->lowest_disabled_stage <= d3d_info->limits.ffp_textures)
2839     {
2840         for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2841         {
2842             if (!(ffu_map & 1))
2843                 continue;
2844
2845             if (context->tex_unit_map[i] != i)
2846             {
2847                 context_map_stage(context, i, i);
2848                 context_invalidate_state(context, STATE_SAMPLER(i));
2849                 context_invalidate_texture_stage(context, i);
2850             }
2851         }
2852         return;
2853     }
2854
2855     /* Now work out the mapping */
2856     tex = 0;
2857     for (i = 0; ffu_map; ffu_map >>= 1, ++i)
2858     {
2859         if (!(ffu_map & 1))
2860             continue;
2861
2862         if (context->tex_unit_map[i] != tex)
2863         {
2864             context_map_stage(context, i, tex);
2865             context_invalidate_state(context, STATE_SAMPLER(i));
2866             context_invalidate_texture_stage(context, i);
2867         }
2868
2869         ++tex;
2870     }
2871 }
2872
2873 static void context_map_psamplers(struct wined3d_context *context, const struct wined3d_state *state)
2874 {
2875     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
2876     const struct wined3d_gl_info *gl_info = context->gl_info;
2877     const struct wined3d_shader_resource_info *resource_info =
2878             state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.resource_info;
2879     unsigned int i;
2880
2881     if (gl_info->limits.combined_samplers >= MAX_COMBINED_SAMPLERS)
2882         return;
2883
2884     for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i)
2885     {
2886         if (resource_info[i].type && context->tex_unit_map[i] != i)
2887         {
2888             context_map_stage(context, i, i);
2889             context_invalidate_state(context, STATE_SAMPLER(i));
2890             if (i < d3d_info->limits.ffp_blend_stages)
2891                 context_invalidate_texture_stage(context, i);
2892         }
2893     }
2894 }
2895
2896 static BOOL context_unit_free_for_vs(const struct wined3d_context *context,
2897         const struct wined3d_shader_resource_info *ps_resource_info, DWORD unit)
2898 {
2899     DWORD current_mapping = context->rev_tex_unit_map[unit];
2900
2901     /* Not currently used */
2902     if (current_mapping == WINED3D_UNMAPPED_STAGE)
2903         return TRUE;
2904
2905     if (current_mapping < MAX_FRAGMENT_SAMPLERS)
2906     {
2907         /* Used by a fragment sampler */
2908
2909         if (!ps_resource_info)
2910         {
2911             /* No pixel shader, check fixed function */
2912             return current_mapping >= MAX_TEXTURES || !(context->fixed_function_usage_map & (1u << current_mapping));
2913         }
2914
2915         /* Pixel shader, check the shader's sampler map */
2916         return !ps_resource_info[current_mapping].type;
2917     }
2918
2919     return TRUE;
2920 }
2921
2922 static void context_map_vsamplers(struct wined3d_context *context, BOOL ps, const struct wined3d_state *state)
2923 {
2924     const struct wined3d_shader_resource_info *vs_resource_info =
2925             state->shader[WINED3D_SHADER_TYPE_VERTEX]->reg_maps.resource_info;
2926     const struct wined3d_shader_resource_info *ps_resource_info = NULL;
2927     const struct wined3d_gl_info *gl_info = context->gl_info;
2928     int start = min(MAX_COMBINED_SAMPLERS, gl_info->limits.combined_samplers) - 1;
2929     int i;
2930
2931     if (gl_info->limits.combined_samplers >= MAX_COMBINED_SAMPLERS)
2932         return;
2933
2934     /* Note that we only care if a resource is used or not, not the
2935      * resource's specific type. Otherwise we'd need to call
2936      * shader_update_samplers() here for 1.x pixelshaders. */
2937     if (ps)
2938         ps_resource_info = state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.resource_info;
2939
2940     for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i)
2941     {
2942         DWORD vsampler_idx = i + MAX_FRAGMENT_SAMPLERS;
2943         if (vs_resource_info[i].type)
2944         {
2945             while (start >= 0)
2946             {
2947                 if (context_unit_free_for_vs(context, ps_resource_info, start))
2948                 {
2949                     if (context->tex_unit_map[vsampler_idx] != start)
2950                     {
2951                         context_map_stage(context, vsampler_idx, start);
2952                         context_invalidate_state(context, STATE_SAMPLER(vsampler_idx));
2953                     }
2954
2955                     --start;
2956                     break;
2957                 }
2958
2959                 --start;
2960             }
2961             if (context->tex_unit_map[vsampler_idx] == WINED3D_UNMAPPED_STAGE)
2962                 WARN("Couldn't find a free texture unit for vertex sampler %u.\n", i);
2963         }
2964     }
2965 }
2966
2967 static void context_update_tex_unit_map(struct wined3d_context *context, const struct wined3d_state *state)
2968 {
2969     BOOL vs = use_vs(state);
2970     BOOL ps = use_ps(state);
2971
2972     /* Try to go for a 1:1 mapping of the samplers when possible. Pixel shaders
2973      * need a 1:1 map at the moment.
2974      * When the mapping of a stage is changed, sampler and ALL texture stage
2975      * states have to be reset. */
2976
2977     if (ps)
2978         context_map_psamplers(context, state);
2979     else
2980         context_map_fixed_function_samplers(context, state);
2981
2982     if (vs)
2983         context_map_vsamplers(context, ps, state);
2984 }
2985
2986 /* Context activation is done by the caller. */
2987 void context_state_drawbuf(struct wined3d_context *context, const struct wined3d_state *state, DWORD state_id)
2988 {
2989     DWORD rt_mask, *cur_mask;
2990
2991     if (isStateDirty(context, STATE_FRAMEBUFFER)) return;
2992
2993     cur_mask = context->current_fbo ? &context->current_fbo->rt_mask : &context->draw_buffers_mask;
2994     rt_mask = find_draw_buffers_mask(context, state);
2995     if (rt_mask != *cur_mask)
2996     {
2997         context_apply_draw_buffers(context, rt_mask);
2998         *cur_mask = rt_mask;
2999     }
3000 }
3001
3002 static BOOL fixed_get_input(BYTE usage, BYTE usage_idx, unsigned int *regnum)
3003 {
3004     if ((usage == WINED3D_DECL_USAGE_POSITION || usage == WINED3D_DECL_USAGE_POSITIONT) && !usage_idx)
3005         *regnum = WINED3D_FFP_POSITION;
3006     else if (usage == WINED3D_DECL_USAGE_BLEND_WEIGHT && !usage_idx)
3007         *regnum = WINED3D_FFP_BLENDWEIGHT;
3008     else if (usage == WINED3D_DECL_USAGE_BLEND_INDICES && !usage_idx)
3009         *regnum = WINED3D_FFP_BLENDINDICES;
3010     else if (usage == WINED3D_DECL_USAGE_NORMAL && !usage_idx)
3011         *regnum = WINED3D_FFP_NORMAL;
3012     else if (usage == WINED3D_DECL_USAGE_PSIZE && !usage_idx)
3013         *regnum = WINED3D_FFP_PSIZE;
3014     else if (usage == WINED3D_DECL_USAGE_COLOR && !usage_idx)
3015         *regnum = WINED3D_FFP_DIFFUSE;
3016     else if (usage == WINED3D_DECL_USAGE_COLOR && usage_idx == 1)
3017         *regnum = WINED3D_FFP_SPECULAR;
3018     else if (usage == WINED3D_DECL_USAGE_TEXCOORD && usage_idx < WINED3DDP_MAXTEXCOORD)
3019         *regnum = WINED3D_FFP_TEXCOORD0 + usage_idx;
3020     else
3021     {
3022         FIXME("Unsupported input stream [usage=%s, usage_idx=%u].\n", debug_d3ddeclusage(usage), usage_idx);
3023         *regnum = ~0U;
3024         return FALSE;
3025     }
3026
3027     return TRUE;
3028 }
3029
3030 /* Context activation is done by the caller. */
3031 void context_stream_info_from_declaration(struct wined3d_context *context,
3032         const struct wined3d_state *state, struct wined3d_stream_info *stream_info)
3033 {
3034     /* We need to deal with frequency data! */
3035     struct wined3d_vertex_declaration *declaration = state->vertex_declaration;
3036     BOOL generic_attributes = context->d3d_info->ffp_generic_attributes;
3037     BOOL use_vshader = use_vs(state);
3038     unsigned int i;
3039
3040     stream_info->use_map = 0;
3041     stream_info->swizzle_map = 0;
3042     stream_info->position_transformed = 0;
3043
3044     if (!declaration)
3045         return;
3046
3047     stream_info->position_transformed = declaration->position_transformed;
3048
3049     /* Translate the declaration into strided data. */
3050     for (i = 0; i < declaration->element_count; ++i)
3051     {
3052         const struct wined3d_vertex_declaration_element *element = &declaration->elements[i];
3053         const struct wined3d_stream_state *stream = &state->streams[element->input_slot];
3054         BOOL stride_used;
3055         unsigned int idx;
3056
3057         TRACE("%p Element %p (%u of %u).\n", declaration->elements,
3058                 element, i + 1, declaration->element_count);
3059
3060         if (!stream->buffer)
3061             continue;
3062
3063         TRACE("offset %u input_slot %u usage_idx %d.\n", element->offset, element->input_slot, element->usage_idx);
3064
3065         if (use_vshader)
3066         {
3067             if (element->output_slot == WINED3D_OUTPUT_SLOT_UNUSED)
3068             {
3069                 stride_used = FALSE;
3070             }
3071             else if (element->output_slot == WINED3D_OUTPUT_SLOT_SEMANTIC)
3072             {
3073                 /* TODO: Assuming vertexdeclarations are usually used with the
3074                  * same or a similar shader, it might be worth it to store the
3075                  * last used output slot and try that one first. */
3076                 stride_used = vshader_get_input(state->shader[WINED3D_SHADER_TYPE_VERTEX],
3077                         element->usage, element->usage_idx, &idx);
3078             }
3079             else
3080             {
3081                 idx = element->output_slot;
3082                 stride_used = TRUE;
3083             }
3084         }
3085         else
3086         {
3087             if (!generic_attributes && !element->ffp_valid)
3088             {
3089                 WARN("Skipping unsupported fixed function element of format %s and usage %s.\n",
3090                         debug_d3dformat(element->format->id), debug_d3ddeclusage(element->usage));
3091                 stride_used = FALSE;
3092             }
3093             else
3094             {
3095                 stride_used = fixed_get_input(element->usage, element->usage_idx, &idx);
3096             }
3097         }
3098
3099         if (stride_used)
3100         {
3101             TRACE("Load %s array %u [usage %s, usage_idx %u, "
3102                     "input_slot %u, offset %u, stride %u, format %s, class %s, step_rate %u].\n",
3103                     use_vshader ? "shader": "fixed function", idx,
3104                     debug_d3ddeclusage(element->usage), element->usage_idx, element->input_slot,
3105                     element->offset, stream->stride, debug_d3dformat(element->format->id),
3106                     debug_d3dinput_classification(element->input_slot_class), element->instance_data_step_rate);
3107
3108             stream_info->elements[idx].format = element->format;
3109             stream_info->elements[idx].data.buffer_object = 0;
3110             stream_info->elements[idx].data.addr = (BYTE *)NULL + stream->offset + element->offset;
3111             stream_info->elements[idx].stride = stream->stride;
3112             stream_info->elements[idx].stream_idx = element->input_slot;
3113             if (stream->flags & WINED3DSTREAMSOURCE_INSTANCEDATA)
3114             {
3115                 stream_info->elements[idx].divisor = 1;
3116             }
3117             else if (element->input_slot_class == WINED3D_INPUT_PER_INSTANCE_DATA)
3118             {
3119                 stream_info->elements[idx].divisor = element->instance_data_step_rate;
3120                 if (!element->instance_data_step_rate)
3121                     FIXME("Instance step rate 0 not implemented.\n");
3122             }
3123             else
3124             {
3125                 stream_info->elements[idx].divisor = 0;
3126             }
3127
3128             if (!context->gl_info->supported[ARB_VERTEX_ARRAY_BGRA]
3129                     && element->format->id == WINED3DFMT_B8G8R8A8_UNORM)
3130             {
3131                 stream_info->swizzle_map |= 1u << idx;
3132             }
3133             stream_info->use_map |= 1u << idx;
3134         }
3135     }
3136 }
3137
3138 /* Context activation is done by the caller. */
3139 static void context_update_stream_info(struct wined3d_context *context, const struct wined3d_state *state)
3140 {
3141     struct wined3d_stream_info *stream_info = &context->stream_info;
3142     const struct wined3d_d3d_info *d3d_info = context->d3d_info;
3143     const struct wined3d_gl_info *gl_info = context->gl_info;
3144     DWORD prev_all_vbo = stream_info->all_vbo;
3145     unsigned int i;
3146     WORD map;
3147
3148     context_stream_info_from_declaration(context, state, stream_info);
3149
3150     stream_info->all_vbo = 1;
3151     context->num_buffer_queries = 0;
3152     for (i = 0, map = stream_info->use_map; map; map >>= 1, ++i)
3153     {
3154         struct wined3d_stream_info_element *element;
3155         struct wined3d_bo_address data;
3156         struct wined3d_buffer *buffer;
3157
3158         if (!(map & 1))
3159             continue;
3160
3161         element = &stream_info->elements[i];
3162         buffer = state->streams[element->stream_idx].buffer;
3163
3164         /* We can't use VBOs if the base vertex index is negative. OpenGL
3165          * doesn't accept negative offsets (or rather offsets bigger than the
3166          * VBO, because the pointer is unsigned), so use system memory
3167          * sources. In most sane cases the pointer - offset will still be > 0,
3168          * otherwise it will wrap around to some big value. Hope that with the
3169          * indices the driver wraps it back internally. If not,
3170          * draw_primitive_immediate_mode() is needed, including a vertex buffer
3171          * path. */
3172         if (state->load_base_vertex_index < 0)
3173         {
3174             WARN_(d3d_perf)("load_base_vertex_index is < 0 (%d), not using VBOs.\n",
3175                     state->load_base_vertex_index);
3176             element->data.buffer_object = 0;
3177             element->data.addr += (ULONG_PTR)buffer_get_sysmem(buffer, context);
3178             if ((UINT_PTR)element->data.addr < -state->load_base_vertex_index * element->stride)
3179                 FIXME("System memory vertex data load offset is negative!\n");
3180         }
3181         else
3182         {
3183             buffer_internal_preload(buffer, context, state);
3184             buffer_get_memory(buffer, context, &data);
3185             element->data.buffer_object = data.buffer_object;
3186             element->data.addr += (ULONG_PTR)data.addr;
3187         }
3188
3189         if (!element->data.buffer_object)
3190             stream_info->all_vbo = 0;
3191
3192         if (buffer->query)
3193             context->buffer_queries[context->num_buffer_queries++] = buffer->query;
3194
3195         TRACE("Load array %u {%#x:%p}.\n", i, element->data.buffer_object, element->data.addr);
3196     }
3197
3198     if (prev_all_vbo != stream_info->all_vbo)
3199         context_invalidate_state(context, STATE_INDEXBUFFER);
3200
3201     context->use_immediate_mode_draw = FALSE;
3202
3203     if (stream_info->all_vbo)
3204         return;
3205
3206     if (use_vs(state))
3207     {
3208         if (state->vertex_declaration->half_float_conv_needed)
3209         {
3210             TRACE("Using immediate mode draw with vertex shaders for FLOAT16 conversion.\n");
3211             context->use_immediate_mode_draw = TRUE;
3212         }
3213     }
3214     else
3215     {
3216         WORD slow_mask = -!d3d_info->ffp_generic_attributes & (1u << WINED3D_FFP_PSIZE);
3217         slow_mask |= -(!gl_info->supported[ARB_VERTEX_ARRAY_BGRA] && !d3d_info->ffp_generic_attributes)
3218                 & ((1u << WINED3D_FFP_DIFFUSE) | (1u << WINED3D_FFP_SPECULAR) | (1u << WINED3D_FFP_BLENDWEIGHT));
3219
3220         if ((stream_info->position_transformed && !d3d_info->xyzrhw)
3221                 || (stream_info->use_map & slow_mask))
3222             context->use_immediate_mode_draw = TRUE;
3223     }
3224 }
3225
3226 /* Context activation is done by the caller. */
3227 static void context_preload_texture(struct wined3d_context *context,
3228         const struct wined3d_state *state, unsigned int idx)
3229 {
3230     struct wined3d_texture *texture;
3231
3232     if (!(texture = state->textures[idx]))
3233         return;
3234
3235     wined3d_texture_load(texture, context, state->sampler_states[idx][WINED3D_SAMP_SRGB_TEXTURE]);
3236 }
3237
3238 /* Context activation is done by the caller. */
3239 static void context_preload_textures(struct wined3d_context *context, const struct wined3d_state *state)
3240 {
3241     unsigned int i;
3242
3243     if (use_vs(state))
3244     {
3245         for (i = 0; i < MAX_VERTEX_SAMPLERS; ++i)
3246         {
3247             if (state->shader[WINED3D_SHADER_TYPE_VERTEX]->reg_maps.resource_info[i].type)
3248                 context_preload_texture(context, state, MAX_FRAGMENT_SAMPLERS + i);
3249         }
3250     }
3251
3252     if (use_ps(state))
3253     {
3254         for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i)
3255         {
3256             if (state->shader[WINED3D_SHADER_TYPE_PIXEL]->reg_maps.resource_info[i].type)
3257                 context_preload_texture(context, state, i);
3258         }
3259     }
3260     else
3261     {
3262         WORD ffu_map = context->fixed_function_usage_map;
3263
3264         for (i = 0; ffu_map; ffu_map >>= 1, ++i)
3265         {
3266             if (ffu_map & 1)
3267                 context_preload_texture(context, state, i);
3268         }
3269     }
3270 }
3271
3272 static void context_load_shader_resources(struct wined3d_context *context, const struct wined3d_state *state)
3273 {
3274     struct wined3d_shader_sampler_map_entry *entry;
3275     struct wined3d_shader_resource_view *view;
3276     struct wined3d_shader *shader;
3277     unsigned int i, j;
3278
3279     for (i = 0; i < WINED3D_SHADER_TYPE_COUNT; ++i)
3280     {
3281         if (!(shader = state->shader[i]))
3282             continue;
3283
3284         for (j = 0; j < WINED3D_MAX_CBS; ++j)
3285         {
3286             if (state->cb[i][j])
3287                 buffer_internal_preload(state->cb[i][j], context, state);
3288         }
3289
3290         for (j = 0; j < shader->reg_maps.sampler_map.count; ++j)
3291         {
3292             entry = &shader->reg_maps.sampler_map.entries[j];
3293
3294             if (!(view = state->shader_resource_view[i][entry->resource_idx]))
3295             {
3296                 WARN("No resource view bound at index %u, %u.\n", i, entry->resource_idx);
3297                 continue;
3298             }
3299
3300             if (view->resource->type == WINED3D_RTYPE_BUFFER)
3301                 buffer_internal_preload(buffer_from_resource(view->resource), context, state);
3302             else
3303                 wined3d_texture_load(texture_from_resource(view->resource), context, FALSE);
3304         }
3305     }
3306 }
3307
3308 static void context_bind_shader_resources(struct wined3d_context *context, const struct wined3d_state *state)
3309 {
3310     const struct wined3d_device *device = context->swapchain->device;
3311     const struct wined3d_gl_info *gl_info = context->gl_info;
3312     struct wined3d_shader_sampler_map_entry *entry;
3313     struct wined3d_shader_resource_view *view;
3314     struct wined3d_sampler *sampler;
3315     struct wined3d_shader *shader;
3316     unsigned int i, j, count;
3317     GLuint sampler_name;
3318
3319     static const struct
3320     {
3321         enum wined3d_shader_type type;
3322         unsigned int base_idx;
3323         unsigned int count;
3324     }
3325     shader_types[] =
3326     {
3327         {WINED3D_SHADER_TYPE_PIXEL,     0,                      MAX_FRAGMENT_SAMPLERS},
3328         {WINED3D_SHADER_TYPE_VERTEX,    MAX_FRAGMENT_SAMPLERS,  MAX_VERTEX_SAMPLERS},
3329     };
3330
3331     for (i = 0; i < ARRAY_SIZE(shader_types); ++i)
3332     {
3333         if (!(shader = state->shader[shader_types[i].type]))
3334             continue;
3335
3336         count = shader->reg_maps.sampler_map.count;
3337         if (count > shader_types[i].count)
3338         {
3339             FIXME("Shader %p needs %u samplers, but only %u are supported.\n",
3340                     shader, count, shader_types[i].count);
3341             count = shader_types[i].count;
3342         }
3343
3344         for (j = 0; j < count; ++j)
3345         {
3346             entry = &shader->reg_maps.sampler_map.entries[j];
3347
3348             if (!(view = state->shader_resource_view[shader_types[i].type][entry->resource_idx]))
3349             {
3350                 WARN("No resource view bound at index %u, %u.\n", shader_types[i].type, entry->resource_idx);
3351                 continue;
3352             }
3353
3354             if (entry->sampler_idx == WINED3D_SAMPLER_DEFAULT)
3355                 sampler_name = device->default_sampler;
3356             else if ((sampler = state->sampler[shader_types[i].type][entry->sampler_idx]))
3357                 sampler_name = sampler->name;
3358             else
3359                 sampler_name = device->null_sampler;
3360
3361             context_active_texture(context, gl_info, shader_types[i].base_idx + entry->bind_idx);
3362             GL_EXTCALL(glBindSampler(shader_types[i].base_idx + entry->bind_idx, sampler_name));
3363             checkGLcall("glBindSampler");
3364             wined3d_shader_resource_view_bind(view, context);
3365         }
3366     }
3367 }
3368
3369 /* Context activation is done by the caller. */
3370 BOOL context_apply_draw_state(struct wined3d_context *context,
3371         const struct wined3d_device *device, const struct wined3d_state *state)
3372 {
3373     const struct StateEntry *state_table = context->state_table;
3374     const struct wined3d_fb_state *fb = state->fb;
3375     unsigned int i;
3376     WORD map;
3377
3378     if (!context_validate_rt_config(context->gl_info->limits.buffers,
3379             fb->render_targets, fb->depth_stencil))
3380         return FALSE;
3381
3382     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO && isStateDirty(context, STATE_FRAMEBUFFER))
3383     {
3384         context_validate_onscreen_formats(context, fb->depth_stencil);
3385     }
3386
3387     /* Preload resources before FBO setup. Texture preload in particular may
3388      * result in changes to the current FBO, due to using e.g. FBO blits for
3389      * updating a resource location. */
3390     context_update_tex_unit_map(context, state);
3391     context_preload_textures(context, state);
3392     context_load_shader_resources(context, state);
3393     /* TODO: Right now the dependency on the vertex shader is necessary
3394      * since context_stream_info_from_declaration depends on the reg_maps of
3395      * the current VS but maybe it's possible to relax the coupling in some
3396      * situations at least. */
3397     if (isStateDirty(context, STATE_VDECL) || isStateDirty(context, STATE_STREAMSRC)
3398             || isStateDirty(context, STATE_SHADER(WINED3D_SHADER_TYPE_VERTEX)))
3399     {
3400         context_update_stream_info(context, state);
3401     }
3402     else
3403     {
3404         for (i = 0, map = context->stream_info.use_map; map; map >>= 1, ++i)
3405         {
3406             if (map & 1)
3407                 buffer_mark_used(state->streams[context->stream_info.elements[i].stream_idx].buffer);
3408         }
3409     }
3410     if (state->index_buffer)
3411     {
3412         if (context->stream_info.all_vbo)
3413             buffer_internal_preload(state->index_buffer, context, state);
3414         else
3415             buffer_get_sysmem(state->index_buffer, context);
3416     }
3417
3418     for (i = 0; i < context->numDirtyEntries; ++i)
3419     {
3420         DWORD rep = context->dirtyArray[i];
3421         DWORD idx = rep / (sizeof(*context->isStateDirty) * CHAR_BIT);
3422         BYTE shift = rep & ((sizeof(*context->isStateDirty) * CHAR_BIT) - 1);
3423         context->isStateDirty[idx] &= ~(1u << shift);
3424         state_table[rep].apply(context, state, rep);
3425     }
3426
3427     if (context->shader_update_mask)
3428     {
3429         device->shader_backend->shader_select(device->shader_priv, context, state);
3430         context->shader_update_mask = 0;
3431     }
3432
3433     if (context->constant_update_mask)
3434     {
3435         device->shader_backend->shader_load_constants(device->shader_priv, context, state);
3436         context->constant_update_mask = 0;
3437     }
3438
3439     if (context->update_shader_resource_bindings)
3440     {
3441         context_bind_shader_resources(context, state);
3442         context->update_shader_resource_bindings = 0;
3443     }
3444
3445     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO)
3446     {
3447         context_check_fbo_status(context, GL_FRAMEBUFFER);
3448     }
3449
3450     context->numDirtyEntries = 0; /* This makes the whole list clean */
3451     context->last_was_blit = FALSE;
3452
3453     return TRUE;
3454 }
3455
3456 static void context_setup_target(struct wined3d_context *context,
3457         struct wined3d_texture *texture, unsigned int sub_resource_idx)
3458 {
3459     BOOL old_render_offscreen = context->render_offscreen, render_offscreen;
3460
3461     render_offscreen = wined3d_resource_is_offscreen(&texture->resource);
3462     if (context->current_rt.texture == texture
3463             && context->current_rt.sub_resource_idx == sub_resource_idx
3464             && render_offscreen == old_render_offscreen)
3465         return;
3466
3467     /* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
3468      * the alpha blend state changes with different render target formats. */
3469     if (!context->current_rt.texture)
3470     {
3471         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
3472     }
3473     else
3474     {
3475         const struct wined3d_format *old = context->current_rt.texture->resource.format;
3476         const struct wined3d_format *new = texture->resource.format;
3477
3478         if (old->id != new->id)
3479         {
3480             /* Disable blending when the alpha mask has changed and when a format doesn't support blending. */
3481             if ((old->alpha_size && !new->alpha_size) || (!old->alpha_size && new->alpha_size)
3482                     || !(texture->resource.format_flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING))
3483                 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_ALPHABLENDENABLE));
3484
3485             /* Update sRGB writing when switching between formats that do/do not support sRGB writing */
3486             if ((context->current_rt.texture->resource.format_flags & WINED3DFMT_FLAG_SRGB_WRITE)
3487                     != (texture->resource.format_flags & WINED3DFMT_FLAG_SRGB_WRITE))
3488                 context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SRGBWRITEENABLE));
3489         }
3490
3491         /* When switching away from an offscreen render target, and we're not
3492          * using FBOs, we have to read the drawable into the texture. This is
3493          * done via PreLoad (and WINED3D_LOCATION_DRAWABLE set on the surface).
3494          * There are some things that need care though. PreLoad needs a GL context,
3495          * and FindContext is called before the context is activated. It also
3496          * has to be called with the old rendertarget active, otherwise a
3497          * wrong drawable is read. */
3498         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
3499                 && old_render_offscreen && (context->current_rt.texture != texture
3500                 || context->current_rt.sub_resource_idx != sub_resource_idx))
3501         {
3502             unsigned int prev_sub_resource_idx = context->current_rt.sub_resource_idx;
3503             struct wined3d_texture *prev_texture = context->current_rt.texture;
3504
3505             /* Read the back buffer of the old drawable into the destination texture. */
3506             if (prev_texture->texture_srgb.name)
3507                 wined3d_texture_load(prev_texture, context, TRUE);
3508             wined3d_texture_load(prev_texture, context, FALSE);
3509             wined3d_texture_invalidate_location(prev_texture, prev_sub_resource_idx, WINED3D_LOCATION_DRAWABLE);
3510         }
3511     }
3512
3513     context->current_rt.texture = texture;
3514     context->current_rt.sub_resource_idx = sub_resource_idx;
3515     context_set_render_offscreen(context, render_offscreen);
3516 }
3517
3518 struct wined3d_context *context_acquire(const struct wined3d_device *device, struct wined3d_surface *target)
3519 {
3520     struct wined3d_context *current_context = context_get_current();
3521     struct wined3d_texture *target_texture;
3522     unsigned int target_sub_resource_idx;
3523     struct wined3d_context *context;
3524
3525     TRACE("device %p, target %p.\n", device, target);
3526
3527     if (current_context && current_context->destroyed)
3528         current_context = NULL;
3529
3530     if (target)
3531     {
3532         target_texture = target->container;
3533         target_sub_resource_idx = surface_get_sub_resource_idx(target);
3534     }
3535     else
3536     {
3537         if (current_context
3538                 && current_context->current_rt.texture
3539                 && current_context->swapchain->device == device)
3540         {
3541             target_texture = current_context->current_rt.texture;
3542             target_sub_resource_idx = current_context->current_rt.sub_resource_idx;
3543         }
3544         else
3545         {
3546             struct wined3d_swapchain *swapchain = device->swapchains[0];
3547
3548             if (swapchain->back_buffers)
3549                 target_texture = swapchain->back_buffers[0];
3550             else
3551                 target_texture = swapchain->front_buffer;
3552             target_sub_resource_idx = 0;
3553         }
3554     }
3555
3556     if (current_context && current_context->current_rt.texture == target_texture)
3557     {
3558         context = current_context;
3559     }
3560     else if (target_texture->swapchain)
3561     {
3562         TRACE("Rendering onscreen.\n");
3563
3564         context = swapchain_get_context(target_texture->swapchain);
3565     }
3566     else
3567     {
3568         TRACE("Rendering offscreen.\n");
3569
3570         /* Stay with the current context if possible. Otherwise use the
3571          * context for the primary swapchain. */
3572         if (current_context && current_context->swapchain->device == device)
3573             context = current_context;
3574         else
3575             context = swapchain_get_context(device->swapchains[0]);
3576     }
3577
3578     context_enter(context);
3579     context_update_window(context);
3580     context_setup_target(context, target_texture, target_sub_resource_idx);
3581     if (!context->valid) return context;
3582
3583     if (context != current_context)
3584     {
3585         if (!context_set_current(context))
3586             ERR("Failed to activate the new context.\n");
3587     }
3588     else if (context->needs_set)
3589     {
3590         context_set_gl_context(context);
3591     }
3592
3593     return context;
3594 }