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

   1 /*
   2  * Context and render target management in wined3d
   3  *
   4  * Copyright 2007 Stefan Dösinger for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include <stdio.h>
  23 #ifdef HAVE_FLOAT_H
  24 # include <float.h>
  25 #endif
  26 #include "wined3d_private.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  29
  30 #define GLINFO_LOCATION This->adapter->gl_info
  31
  32 /*****************************************************************************
  33  * Context_MarkStateDirty
  34  *
  35  * Marks a state in a context dirty. Only one context, opposed to
  36  * IWineD3DDeviceImpl_MarkStateDirty, which marks the state dirty in all
  37  * contexts
  38  *
  39  * Params:
  40  *  context: Context to mark the state dirty in
  41  *  state: State to mark dirty
  42  *  StateTable: Pointer to the state table in use(for state grouping)
  43  *
  44  *****************************************************************************/
  45 static void Context_MarkStateDirty(WineD3DContext *context, DWORD state, const struct StateEntry *StateTable) {
  46     DWORD rep = StateTable[state].representative;
  47     DWORD idx;
  48     BYTE shift;
  49
  50     if(!rep || isStateDirty(context, rep)) return;
  51
  52     context->dirtyArray[context->numDirtyEntries++] = rep;
  53     idx = rep >> 5;
  54     shift = rep & 0x1f;
  55     context->isStateDirty[idx] |= (1 << shift);
  56 }
  57
  58 /*****************************************************************************
  59  * AddContextToArray
  60  *
  61  * Adds a context to the context array. Helper function for CreateContext
  62  *
  63  * This method is not called in performance-critical code paths, only when a
  64  * new render target or swapchain is created. Thus performance is not an issue
  65  * here.
  66  *
  67  * Params:
  68  *  This: Device to add the context for
  69  *  hdc: device context
  70  *  glCtx: WGL context to add
  71  *  pbuffer: optional pbuffer used with this context
  72  *
  73  *****************************************************************************/
  74 static WineD3DContext *AddContextToArray(IWineD3DDeviceImpl *This, HWND win_handle, HDC hdc, HGLRC glCtx, HPBUFFERARB pbuffer) {
  75     WineD3DContext **oldArray = This->contexts;
  76     DWORD state;
  77
  78     This->contexts = HeapAlloc(GetProcessHeap(), 0, sizeof(*This->contexts) * (This->numContexts + 1));
  79     if(This->contexts == NULL) {
  80         ERR("Unable to grow the context array\n");
  81         This->contexts = oldArray;
  82         return NULL;
  83     }
  84     if(oldArray) {
  85         memcpy(This->contexts, oldArray, sizeof(*This->contexts) * This->numContexts);
  86     }
  87
  88     This->contexts[This->numContexts] = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WineD3DContext));
  89     if(This->contexts[This->numContexts] == NULL) {
  90         ERR("Unable to allocate a new context\n");
  91         HeapFree(GetProcessHeap(), 0, This->contexts);
  92         This->contexts = oldArray;
  93         return NULL;
  94     }
  95
  96     This->contexts[This->numContexts]->hdc = hdc;
  97     This->contexts[This->numContexts]->glCtx = glCtx;
  98     This->contexts[This->numContexts]->pbuffer = pbuffer;
  99     This->contexts[This->numContexts]->win_handle = win_handle;
 100     HeapFree(GetProcessHeap(), 0, oldArray);
 101
 102     /* Mark all states dirty to force a proper initialization of the states on the first use of the context
 103      */
 104     for(state = 0; state <= STATE_HIGHEST; state++) {
 105         Context_MarkStateDirty(This->contexts[This->numContexts], state, This->shader_backend->StateTable);
 106     }
 107
 108     This->numContexts++;
 109     TRACE("Created context %p\n", This->contexts[This->numContexts - 1]);
 110     return This->contexts[This->numContexts - 1];
 111 }
 112
 113 /*****************************************************************************
 114  * CreateContext
 115  *
 116  * Creates a new context for a window, or a pbuffer context.
 117  *
 118  * * Params:
 119  *  This: Device to activate the context for
 120  *  target: Surface this context will render to
 121  *  win_handle: handle to the window which we are drawing to
 122  *  create_pbuffer: tells whether to create a pbuffer or not
 123  *  pPresentParameters: contains the pixelformats to use for onscreen rendering
 124  *
 125  *****************************************************************************/
 126 WineD3DContext *CreateContext(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *target, HWND win_handle, BOOL create_pbuffer, const WINED3DPRESENT_PARAMETERS *pPresentParms) {
 127     HDC oldDrawable, hdc;
 128     HPBUFFERARB pbuffer = NULL;
 129     HGLRC ctx = NULL, oldCtx;
 130     WineD3DContext *ret = NULL;
 131     int s;
 132
 133     TRACE("(%p): Creating a %s context for render target %p\n", This, create_pbuffer ? "offscreen" : "onscreen", target);
 134
 135 #define PUSH1(att)        attribs[nAttribs++] = (att);
 136 #define PUSH2(att,value)  attribs[nAttribs++] = (att); attribs[nAttribs++] = (value);
 137     if(create_pbuffer) {
 138         HDC hdc_parent = GetDC(win_handle);
 139         int iPixelFormat = 0;
 140         short redBits, greenBits, blueBits, alphaBits, colorBits;
 141         short depthBits, stencilBits;
 142
 143         IWineD3DSurface *StencilSurface = This->stencilBufferTarget;
 144         WINED3DFORMAT StencilBufferFormat = (NULL != StencilSurface) ? ((IWineD3DSurfaceImpl *) StencilSurface)->resource.format : 0;
 145
 146         int attribs[256];
 147         int nAttribs = 0;
 148         unsigned int nFormats;
 149
 150         /* Retrieve the specifications for the pixelformat from the backbuffer / stencilbuffer */
 151         getColorBits(target->resource.format, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits);
 152         getDepthStencilBits(StencilBufferFormat, &depthBits, &stencilBits);
 153         PUSH2(WGL_DRAW_TO_PBUFFER_ARB, 1); /* We need pbuffer support; doublebuffering isn't needed */
 154         PUSH2(WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB); /* Make sure we don't get a float or color index format */
 155         PUSH2(WGL_COLOR_BITS_ARB, colorBits);
 156         PUSH2(WGL_RED_BITS_ARB, redBits);
 157         PUSH2(WGL_GREEN_BITS_ARB, greenBits);
 158         PUSH2(WGL_BLUE_BITS_ARB, blueBits);
 159         PUSH2(WGL_ALPHA_BITS_ARB, alphaBits);
 160         PUSH2(WGL_DEPTH_BITS_ARB, depthBits);
 161         PUSH2(WGL_STENCIL_BITS_ARB, stencilBits);
 162         PUSH1(0); /* end the list */
 163
 164         /* Try to find a pixelformat that matches exactly. If that fails let ChoosePixelFormat try to find a close match */
 165         if(!GL_EXTCALL(wglChoosePixelFormatARB(hdc_parent, (const int*)&attribs, NULL, 1, &iPixelFormat, &nFormats)))
 166         {
 167             PIXELFORMATDESCRIPTOR pfd;
 168
 169             TRACE("Falling back to ChoosePixelFormat as wglChoosePixelFormatARB failed\n");
 170
 171             ZeroMemory(&pfd, sizeof(pfd));
 172             pfd.nSize      = sizeof(pfd);
 173             pfd.nVersion   = 1;
 174             pfd.dwFlags    = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER_DONTCARE | PFD_DRAW_TO_WINDOW;
 175             pfd.iPixelType = PFD_TYPE_RGBA;
 176             pfd.cColorBits = colorBits;
 177             pfd.cDepthBits = depthBits;
 178             pfd.cStencilBits = stencilBits;
 179             pfd.iLayerType = PFD_MAIN_PLANE;
 180
 181             iPixelFormat = ChoosePixelFormat(hdc_parent, &pfd);
 182             if(!iPixelFormat) {
 183                 /* If this happens something is very wrong as ChoosePixelFormat barely fails */
 184                 ERR("Can't find a suitable iPixelFormat for the pbuffer\n");
 185             }
 186         }
 187
 188         TRACE("Creating a pBuffer drawable for the new context\n");
 189         pbuffer = GL_EXTCALL(wglCreatePbufferARB(hdc_parent, iPixelFormat, target->currentDesc.Width, target->currentDesc.Height, 0));
 190         if(!pbuffer) {
 191             ERR("Cannot create a pbuffer\n");
 192             ReleaseDC(win_handle, hdc_parent);
 193             goto out;
 194         }
 195
 196         /* In WGL a pbuffer is 'wrapped' inside a HDC to 'fool' wglMakeCurrent */
 197         hdc = GL_EXTCALL(wglGetPbufferDCARB(pbuffer));
 198         if(!hdc) {
 199             ERR("Cannot get a HDC for pbuffer (%p)\n", pbuffer);
 200             GL_EXTCALL(wglDestroyPbufferARB(pbuffer));
 201             ReleaseDC(win_handle, hdc_parent);
 202             goto out;
 203         }
 204         ReleaseDC(win_handle, hdc_parent);
 205     } else {
 206         PIXELFORMATDESCRIPTOR pfd;
 207         int iPixelFormat;
 208         short redBits, greenBits, blueBits, alphaBits, colorBits;
 209         short depthBits=0, stencilBits=0;
 210         int res;
 211         int attribs[256];
 212         int nAttribs = 0;
 213         unsigned int nFormats;
 214         WINED3DFORMAT fmt = target->resource.format;
 215
 216         hdc = GetDC(win_handle);
 217         if(hdc == NULL) {
 218             ERR("Cannot retrieve a device context!\n");
 219             goto out;
 220         }
 221
 222         /* PixelFormat selection */
 223         PUSH2(WGL_DRAW_TO_WINDOW_ARB, GL_TRUE); /* We want to draw to a window */
 224         PUSH2(WGL_DOUBLE_BUFFER_ARB, GL_TRUE);
 225         PUSH2(WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB); /* Make sure we don't get a float or color index format */
 226         PUSH2(WGL_SUPPORT_OPENGL_ARB, GL_TRUE);
 227         PUSH2(WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB); /* Make sure we receive an accelerated format. On windows (at least on ATI) this is not always the case */
 228
 229         /* In case of ORM_BACKBUFFER, make sure to request an alpha component for X4R4G4B4/X8R8G8B8 as we might need it for the backbuffer. */
 230         if(wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER) {
 231             if(target->resource.format == WINED3DFMT_X4R4G4B4)
 232                 fmt = WINED3DFMT_A4R4G4B4;
 233             else if(target->resource.format == WINED3DFMT_X8R8G8B8)
 234                 fmt = WINED3DFMT_A8R8G8B8;
 235
 236             /* We like to have two aux buffers in backbuffer mode */
 237             PUSH2(WGL_AUX_BUFFERS_ARB, 2);
 238         }
 239
 240         if(!getColorBits(fmt, &redBits, &greenBits, &blueBits, &alphaBits, &colorBits)) {
 241             ERR("Unable to get color bits for format %#x!\n", target->resource.format);
 242             return FALSE;
 243         }
 244         PUSH2(WGL_COLOR_BITS_ARB, colorBits);
 245         PUSH2(WGL_RED_BITS_ARB, redBits);
 246         PUSH2(WGL_GREEN_BITS_ARB, greenBits);
 247         PUSH2(WGL_BLUE_BITS_ARB, blueBits);
 248         PUSH2(WGL_ALPHA_BITS_ARB, alphaBits);
 249
 250         /* Retrieve the depth stencil format from the present parameters.
 251          * The choice of the proper format can give a nice performance boost
 252          * in case of GPU limited programs. */
 253         if(pPresentParms->EnableAutoDepthStencil) {
 254             TRACE("pPresentParms->EnableAutoDepthStencil=enabled; using AutoDepthStencilFormat=%s\n", debug_d3dformat(pPresentParms->AutoDepthStencilFormat));
 255             if(!getDepthStencilBits(pPresentParms->AutoDepthStencilFormat, &depthBits, &stencilBits)) {
 256                 ERR("Unable to get depth / stencil bits for AutoDepthStencilFormat %#x!\n", pPresentParms->AutoDepthStencilFormat);
 257                 return FALSE;
 258             }
 259             PUSH2(WGL_DEPTH_BITS_ARB, depthBits);
 260             PUSH2(WGL_STENCIL_BITS_ARB, stencilBits);
 261         }
 262
 263         PUSH1(0); /* end the list */
 264
 265         /* In case of failure hope that standard ChoosePixelFormat will find something suitable */
 266         if(!GL_EXTCALL(wglChoosePixelFormatARB(hdc, (const int*)&attribs, NULL, 1, &iPixelFormat, &nFormats)))
 267         {
 268             /* PixelFormat selection */
 269             ZeroMemory(&pfd, sizeof(pfd));
 270             pfd.nSize      = sizeof(pfd);
 271             pfd.nVersion   = 1;
 272             pfd.dwFlags    = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW;/*PFD_GENERIC_ACCELERATED*/
 273             pfd.iPixelType = PFD_TYPE_RGBA;
 274             pfd.cAlphaBits = alphaBits;
 275             pfd.cColorBits = colorBits;
 276             pfd.cDepthBits = depthBits;
 277             pfd.cStencilBits = stencilBits;
 278             pfd.iLayerType = PFD_MAIN_PLANE;
 279
 280             iPixelFormat = ChoosePixelFormat(hdc, &pfd);
 281             if(!iPixelFormat) {
 282                 /* If this happens something is very wrong as ChoosePixelFormat barely fails */
 283                 ERR("Can't find a suitable iPixelFormat\n");
 284             }
 285         }
 286
 287         DescribePixelFormat(hdc, iPixelFormat, sizeof(pfd), &pfd);
 288         res = SetPixelFormat(hdc, iPixelFormat, NULL);
 289         if(!res) {
 290             int oldPixelFormat = GetPixelFormat(hdc);
 291
 292             if(oldPixelFormat) {
 293                 /* OpenGL doesn't allow pixel format adjustments. Print an error and continue using the old format.
 294                  * There's a big chance that the old format works although with a performance hit and perhaps rendering errors. */
 295                 ERR("HDC=%p is already set to iPixelFormat=%d and OpenGL doesn't allow changes!\n", hdc, oldPixelFormat);
 296             }
 297             else {
 298                 ERR("SetPixelFormat failed on HDC=%p for iPixelFormat=%d\n", hdc, iPixelFormat);
 299                 return FALSE;
 300             }
 301         }
 302     }
 303 #undef PUSH1
 304 #undef PUSH2
 305
 306     ctx = pwglCreateContext(hdc);
 307     if(This->numContexts) pwglShareLists(This->contexts[0]->glCtx, ctx);
 308
 309     if(!ctx) {
 310         ERR("Failed to create a WGL context\n");
 311         if(create_pbuffer) {
 312             GL_EXTCALL(wglReleasePbufferDCARB(pbuffer, hdc));
 313             GL_EXTCALL(wglDestroyPbufferARB(pbuffer));
 314         }
 315         goto out;
 316     }
 317     ret = AddContextToArray(This, win_handle, hdc, ctx, pbuffer);
 318     if(!ret) {
 319         ERR("Failed to add the newly created context to the context list\n");
 320         pwglDeleteContext(ctx);
 321         if(create_pbuffer) {
 322             GL_EXTCALL(wglReleasePbufferDCARB(pbuffer, hdc));
 323             GL_EXTCALL(wglDestroyPbufferARB(pbuffer));
 324         }
 325         goto out;
 326     }
 327     ret->surface = (IWineD3DSurface *) target;
 328     ret->isPBuffer = create_pbuffer;
 329     ret->tid = GetCurrentThreadId();
 330     if(This->shader_backend->shader_dirtifyable_constants((IWineD3DDevice *) This)) {
 331         /* Create the dirty constants array and initialize them to dirty */
 332         ret->vshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
 333                 sizeof(*ret->vshader_const_dirty) * GL_LIMITS(vshader_constantsF));
 334         ret->pshader_const_dirty = HeapAlloc(GetProcessHeap(), 0,
 335                 sizeof(*ret->pshader_const_dirty) * GL_LIMITS(pshader_constantsF));
 336         memset(ret->vshader_const_dirty, 1,
 337                sizeof(*ret->vshader_const_dirty) * GL_LIMITS(vshader_constantsF));
 338         memset(ret->pshader_const_dirty, 1,
 339                 sizeof(*ret->pshader_const_dirty) * GL_LIMITS(pshader_constantsF));
 340     }
 341
 342     TRACE("Successfully created new context %p\n", ret);
 343
 344     /* Set up the context defaults */
 345     oldCtx  = pwglGetCurrentContext();
 346     oldDrawable = pwglGetCurrentDC();
 347     if(pwglMakeCurrent(hdc, ctx) == FALSE) {
 348         ERR("Cannot activate context to set up defaults\n");
 349         goto out;
 350     }
 351
 352     ENTER_GL();
 353     TRACE("Setting up the screen\n");
 354     /* Clear the screen */
 355     glClearColor(1.0, 0.0, 0.0, 0.0);
 356     checkGLcall("glClearColor");
 357     glClearIndex(0);
 358     glClearDepth(1);
 359     glClearStencil(0xffff);
 360
 361     checkGLcall("glClear");
 362
 363     glColor3f(1.0, 1.0, 1.0);
 364     checkGLcall("glColor3f");
 365
 366     glEnable(GL_LIGHTING);
 367     checkGLcall("glEnable");
 368
 369     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
 370     checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
 371
 372     glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
 373     checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
 374
 375     glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
 376     checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
 377
 378     glPixelStorei(GL_PACK_ALIGNMENT, This->surface_alignment);
 379     checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, This->surface_alignment);");
 380     glPixelStorei(GL_UNPACK_ALIGNMENT, This->surface_alignment);
 381     checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, This->surface_alignment);");
 382
 383     if(GL_SUPPORT(APPLE_CLIENT_STORAGE)) {
 384         /* Most textures will use client storage if supported. Exceptions are non-native power of 2 textures
 385          * and textures in DIB sections(due to the memory protection).
 386          */
 387         glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
 388         checkGLcall("glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE)");
 389     }
 390     if(GL_SUPPORT(ARB_VERTEX_BLEND)) {
 391         /* Direct3D always uses n-1 weights for n world matrices and uses 1 - sum for the last one
 392          * this is equal to GL_WEIGHT_SUM_UNITY_ARB. Enabling it doesn't do anything unless
 393          * GL_VERTEX_BLEND_ARB isn't enabled too
 394          */
 395         glEnable(GL_WEIGHT_SUM_UNITY_ARB);
 396         checkGLcall("glEnable(GL_WEIGHT_SUM_UNITY_ARB)");
 397     }
 398     if(GL_SUPPORT(NV_TEXTURE_SHADER2)) {
 399         glEnable(GL_TEXTURE_SHADER_NV);
 400         checkGLcall("glEnable(GL_TEXTURE_SHADER_NV)");
 401
 402         /* Set up the previous texture input for all shader units. This applies to bump mapping, and in d3d
 403          * the previous texture where to source the offset from is always unit - 1.
 404          */
 405         for(s = 1; s < GL_LIMITS(textures); s++) {
 406             GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + s));
 407             glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB + s - 1);
 408             checkGLcall("glTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, ...\n");
 409         }
 410     } else if(GL_SUPPORT(ATI_FRAGMENT_SHADER)) {
 411         glEnable(GL_FRAGMENT_SHADER_ATI);
 412         checkGLcall("glEnable(GL_FRAGMENT_SHADER_ATI)");
 413     }
 414
 415     if(GL_SUPPORT(ARB_POINT_SPRITE)) {
 416         for(s = 0; s < GL_LIMITS(textures); s++) {
 417             GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + s));
 418             glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE);
 419             checkGLcall("glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE)\n");
 420         }
 421     }
 422     LEAVE_GL();
 423
 424     if(oldDrawable && oldCtx) {
 425         pwglMakeCurrent(oldDrawable, oldCtx);
 426     }
 427
 428 out:
 429     return ret;
 430 }
 431
 432 /*****************************************************************************
 433  * RemoveContextFromArray
 434  *
 435  * Removes a context from the context manager. The opengl context is not
 436  * destroyed or unset. context is not a valid pointer after that call.
 437  *
 438  * Similar to the former call this isn't a performance critical function. A
 439  * helper function for DestroyContext.
 440  *
 441  * Params:
 442  *  This: Device to activate the context for
 443  *  context: Context to remove
 444  *
 445  *****************************************************************************/
 446 static void RemoveContextFromArray(IWineD3DDeviceImpl *This, WineD3DContext *context) {
 447     UINT t, s;
 448     WineD3DContext **oldArray = This->contexts;
 449
 450     TRACE("Removing ctx %p\n", context);
 451
 452     This->numContexts--;
 453
 454     if(This->numContexts) {
 455         This->contexts = HeapAlloc(GetProcessHeap(), 0, sizeof(*This->contexts) * This->numContexts);
 456         if(!This->contexts) {
 457             ERR("Cannot allocate a new context array, PANIC!!!\n");
 458         }
 459         t = 0;
 460         for(s = 0; s < This->numContexts; s++) {
 461             if(oldArray[s] == context) continue;
 462             This->contexts[t] = oldArray[s];
 463             t++;
 464         }
 465     } else {
 466         This->contexts = NULL;
 467     }
 468
 469     HeapFree(GetProcessHeap(), 0, context);
 470     HeapFree(GetProcessHeap(), 0, oldArray);
 471 }
 472
 473 /*****************************************************************************
 474  * DestroyContext
 475  *
 476  * Destroys a wineD3DContext
 477  *
 478  * Params:
 479  *  This: Device to activate the context for
 480  *  context: Context to destroy
 481  *
 482  *****************************************************************************/
 483 void DestroyContext(IWineD3DDeviceImpl *This, WineD3DContext *context) {
 484
 485     /* check that we are the current context first */
 486     TRACE("Destroying ctx %p\n", context);
 487     if(pwglGetCurrentContext() == context->glCtx){
 488         pwglMakeCurrent(NULL, NULL);
 489     }
 490
 491     if(context->isPBuffer) {
 492         GL_EXTCALL(wglReleasePbufferDCARB(context->pbuffer, context->hdc));
 493         GL_EXTCALL(wglDestroyPbufferARB(context->pbuffer));
 494     } else ReleaseDC(context->win_handle, context->hdc);
 495     pwglDeleteContext(context->glCtx);
 496
 497     HeapFree(GetProcessHeap(), 0, context->vshader_const_dirty);
 498     HeapFree(GetProcessHeap(), 0, context->pshader_const_dirty);
 499     RemoveContextFromArray(This, context);
 500 }
 501
 502 /*****************************************************************************
 503  * SetupForBlit
 504  *
 505  * Sets up a context for DirectDraw blitting.
 506  * All texture units are disabled, texture unit 0 is set as current unit
 507  * fog, lighting, blending, alpha test, z test, scissor test, culling disabled
 508  * color writing enabled for all channels
 509  * register combiners disabled, shaders disabled
 510  * world matrix is set to identity, texture matrix 0 too
 511  * projection matrix is setup for drawing screen coordinates
 512  *
 513  * Params:
 514  *  This: Device to activate the context for
 515  *  context: Context to setup
 516  *  width: render target width
 517  *  height: render target height
 518  *
 519  *****************************************************************************/
 520 static inline void SetupForBlit(IWineD3DDeviceImpl *This, WineD3DContext *context, UINT width, UINT height) {
 521     int i;
 522     const struct StateEntry *StateTable = This->shader_backend->StateTable;
 523
 524     TRACE("Setting up context %p for blitting\n", context);
 525     if(context->last_was_blit) {
 526         TRACE("Context is already set up for blitting, nothing to do\n");
 527         return;
 528     }
 529     context->last_was_blit = TRUE;
 530
 531     /* TODO: Use a display list */
 532
 533     /* Disable shaders */
 534     This->shader_backend->shader_cleanup((IWineD3DDevice *) This);
 535     Context_MarkStateDirty(context, STATE_VSHADER, StateTable);
 536     Context_MarkStateDirty(context, STATE_PIXELSHADER, StateTable);
 537
 538     /* Disable all textures. The caller can then bind a texture it wants to blit
 539      * from
 540      */
 541     if(GL_SUPPORT(NV_REGISTER_COMBINERS)) {
 542         glDisable(GL_REGISTER_COMBINERS_NV);
 543         checkGLcall("glDisable(GL_REGISTER_COMBINERS_NV)");
 544     }
 545     if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 546         /* The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
 547          * function texture unit. No need to care for higher samplers
 548          */
 549         for(i = GL_LIMITS(textures) - 1; i > 0 ; i--) {
 550             GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + i));
 551             checkGLcall("glActiveTextureARB");
 552
 553             if(GL_SUPPORT(ARB_TEXTURE_CUBE_MAP)) {
 554                 glDisable(GL_TEXTURE_CUBE_MAP_ARB);
 555                 checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
 556             }
 557             glDisable(GL_TEXTURE_3D);
 558             checkGLcall("glDisable GL_TEXTURE_3D");
 559             glDisable(GL_TEXTURE_2D);
 560             checkGLcall("glDisable GL_TEXTURE_2D");
 561
 562             glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 563             checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
 564
 565             Context_MarkStateDirty(context, STATE_TEXTURESTAGE(i, WINED3DTSS_COLOROP), StateTable);
 566             Context_MarkStateDirty(context, STATE_SAMPLER(i), StateTable);
 567         }
 568         GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
 569         checkGLcall("glActiveTextureARB");
 570     }
 571     if(GL_SUPPORT(ARB_TEXTURE_CUBE_MAP)) {
 572         glDisable(GL_TEXTURE_CUBE_MAP_ARB);
 573         checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
 574     }
 575     glDisable(GL_TEXTURE_3D);
 576     checkGLcall("glDisable GL_TEXTURE_3D");
 577     glDisable(GL_TEXTURE_2D);
 578     checkGLcall("glDisable GL_TEXTURE_2D");
 579
 580     glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 581
 582     glMatrixMode(GL_TEXTURE);
 583     checkGLcall("glMatrixMode(GL_TEXTURE)");
 584     glLoadIdentity();
 585     checkGLcall("glLoadIdentity()");
 586     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_TEXTURE0), StateTable);
 587
 588     if (GL_SUPPORT(EXT_TEXTURE_LOD_BIAS)) {
 589         glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 590                   GL_TEXTURE_LOD_BIAS_EXT,
 591                   0.0);
 592         checkGLcall("glTexEnvi GL_TEXTURE_LOD_BIAS_EXT ...");
 593     }
 594     Context_MarkStateDirty(context, STATE_SAMPLER(0), StateTable);
 595     Context_MarkStateDirty(context, STATE_TEXTURESTAGE(0, WINED3DTSS_COLOROP), StateTable);
 596
 597     /* Other misc states */
 598     glDisable(GL_ALPHA_TEST);
 599     checkGLcall("glDisable(GL_ALPHA_TEST)");
 600     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHATESTENABLE), StateTable);
 601     glDisable(GL_LIGHTING);
 602     checkGLcall("glDisable GL_LIGHTING");
 603     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_LIGHTING), StateTable);
 604     glDisable(GL_DEPTH_TEST);
 605     checkGLcall("glDisable GL_DEPTH_TEST");
 606     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ZENABLE), StateTable);
 607     glDisable(GL_FOG);
 608     checkGLcall("glDisable GL_FOG");
 609     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_FOGENABLE), StateTable);
 610     glDisable(GL_BLEND);
 611     checkGLcall("glDisable GL_BLEND");
 612     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
 613     glDisable(GL_CULL_FACE);
 614     checkGLcall("glDisable GL_CULL_FACE");
 615     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CULLMODE), StateTable);
 616     glDisable(GL_STENCIL_TEST);
 617     checkGLcall("glDisable GL_STENCIL_TEST");
 618     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_STENCILENABLE), StateTable);
 619     glDisable(GL_SCISSOR_TEST);
 620     checkGLcall("glDisable GL_SCISSOR_TEST");
 621     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE), StateTable);
 622     if(GL_SUPPORT(ARB_POINT_SPRITE)) {
 623         glDisable(GL_POINT_SPRITE_ARB);
 624         checkGLcall("glDisable GL_POINT_SPRITE_ARB");
 625         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_POINTSPRITEENABLE), StateTable);
 626     }
 627     glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
 628     checkGLcall("glColorMask");
 629     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CLIPPING), StateTable);
 630     if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 631         glDisable(GL_COLOR_SUM_EXT);
 632         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SPECULARENABLE), StateTable);
 633         checkGLcall("glDisable(GL_COLOR_SUM_EXT)");
 634     }
 635     if (GL_SUPPORT(NV_REGISTER_COMBINERS)) {
 636         GL_EXTCALL(glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB));
 637         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SPECULARENABLE), StateTable);
 638         checkGLcall("glFinalCombinerInputNV");
 639     }
 640
 641     /* Setup transforms */
 642     glMatrixMode(GL_MODELVIEW);
 643     checkGLcall("glMatrixMode(GL_MODELVIEW)");
 644     glLoadIdentity();
 645     checkGLcall("glLoadIdentity()");
 646     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_WORLDMATRIX(0)), StateTable);
 647
 648     glMatrixMode(GL_PROJECTION);
 649     checkGLcall("glMatrixMode(GL_PROJECTION)");
 650     glLoadIdentity();
 651     checkGLcall("glLoadIdentity()");
 652     glOrtho(0, width, height, 0, 0.0, -1.0);
 653     checkGLcall("glOrtho");
 654     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_PROJECTION), StateTable);
 655
 656     context->last_was_rhw = TRUE;
 657     Context_MarkStateDirty(context, STATE_VDECL, StateTable); /* because of last_was_rhw = TRUE */
 658
 659     glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
 660     glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
 661     glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
 662     glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
 663     glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
 664     glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
 665     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CLIPPING), StateTable);
 666
 667     glViewport(0, 0, width, height);
 668     checkGLcall("glViewport");
 669     Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
 670
 671     if(GL_SUPPORT(NV_TEXTURE_SHADER2)) {
 672         glDisable(GL_TEXTURE_SHADER_NV);
 673         checkGLcall("glDisable(GL_TEXTURE_SHADER_NV)");
 674     } else if(GL_SUPPORT(ATI_FRAGMENT_SHADER)) {
 675         glDisable(GL_FRAGMENT_SHADER_ATI);
 676         checkGLcall("glDisable(GL_FRAGMENT_SHADER_ATI)");
 677     }
 678 }
 679
 680 /*****************************************************************************
 681  * findThreadContextForSwapChain
 682  *
 683  * Searches a swapchain for all contexts and picks one for the thread tid.
 684  * If none can be found the swapchain is requested to create a new context
 685  *
 686  *****************************************************************************/
 687 static WineD3DContext *findThreadContextForSwapChain(IWineD3DSwapChain *swapchain, DWORD tid) {
 688     int i;
 689
 690     for(i = 0; i < ((IWineD3DSwapChainImpl *) swapchain)->num_contexts; i++) {
 691         if(((IWineD3DSwapChainImpl *) swapchain)->context[i]->tid == tid) {
 692             return ((IWineD3DSwapChainImpl *) swapchain)->context[i];
 693         }
 694
 695     }
 696
 697     /* Create a new context for the thread */
 698     return IWineD3DSwapChainImpl_CreateContextForThread(swapchain);
 699 }
 700
 701 /*****************************************************************************
 702  * FindContext
 703  *
 704  * Finds a context for the current render target and thread
 705  *
 706  * Parameters:
 707  *  target: Render target to find the context for
 708  *  tid: Thread to activate the context for
 709  *
 710  * Returns: The needed context
 711  *
 712  *****************************************************************************/
 713 static inline WineD3DContext *FindContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, DWORD tid, GLint *buffer) {
 714     IWineD3DSwapChain *swapchain = NULL;
 715     HRESULT hr;
 716     BOOL readTexture = wined3d_settings.offscreen_rendering_mode != ORM_FBO && This->render_offscreen;
 717     WineD3DContext *context = This->activeContext;
 718     BOOL oldRenderOffscreen = This->render_offscreen;
 719     const WINED3DFORMAT oldFmt = ((IWineD3DSurfaceImpl *) This->lastActiveRenderTarget)->resource.format;
 720     const WINED3DFORMAT newFmt = ((IWineD3DSurfaceImpl *) target)->resource.format;
 721     const struct StateEntry *StateTable = This->shader_backend->StateTable;
 722
 723     /* To compensate the lack of format switching with some offscreen rendering methods and on onscreen buffers
 724      * the alpha blend state changes with different render target formats
 725      */
 726     if(oldFmt != newFmt) {
 727         const StaticPixelFormatDesc *old = getFormatDescEntry(oldFmt, NULL, NULL);
 728         const StaticPixelFormatDesc *new = getFormatDescEntry(newFmt, NULL, NULL);
 729
 730         if((old->alphaMask && !new->alphaMask) || (!old->alphaMask && new->alphaMask)) {
 731             Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE), StateTable);
 732         }
 733     }
 734
 735     hr = IWineD3DSurface_GetContainer(target, &IID_IWineD3DSwapChain, (void **) &swapchain);
 736     if(hr == WINED3D_OK && swapchain) {
 737         TRACE("Rendering onscreen\n");
 738
 739         context = findThreadContextForSwapChain(swapchain, tid);
 740
 741         This->render_offscreen = FALSE;
 742         /* The context != This->activeContext will catch a NOP context change. This can occur
 743          * if we are switching back to swapchain rendering in case of FBO or Back Buffer offscreen
 744          * rendering. No context change is needed in that case
 745          */
 746
 747         if(((IWineD3DSwapChainImpl *) swapchain)->frontBuffer == target) {
 748             *buffer = GL_FRONT;
 749         } else {
 750             *buffer = GL_BACK;
 751         }
 752         if(wined3d_settings.offscreen_rendering_mode == ORM_PBUFFER) {
 753             if(This->pbufferContext && tid == This->pbufferContext->tid) {
 754                 This->pbufferContext->tid = 0;
 755             }
 756         }
 757         IWineD3DSwapChain_Release(swapchain);
 758
 759         if(oldRenderOffscreen) {
 760             Context_MarkStateDirty(context, WINED3DTS_PROJECTION, StateTable);
 761             Context_MarkStateDirty(context, STATE_VDECL, StateTable);
 762             Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
 763             Context_MarkStateDirty(context, STATE_SCISSORRECT, StateTable);
 764             Context_MarkStateDirty(context, STATE_FRONTFACE, StateTable);
 765         }
 766
 767     } else {
 768         TRACE("Rendering offscreen\n");
 769         This->render_offscreen = TRUE;
 770         *buffer = This->offscreenBuffer;
 771
 772         switch(wined3d_settings.offscreen_rendering_mode) {
 773             case ORM_FBO:
 774                 /* FBOs do not need a different context. Stay with whatever context is active at the moment */
 775                 if(This->activeContext && tid == This->lastThread) {
 776                     context = This->activeContext;
 777                 } else {
 778                     /* This may happen if the app jumps straight into offscreen rendering
 779                      * Start using the context of the primary swapchain. tid == 0 is no problem
 780                      * for findThreadContextForSwapChain.
 781                      *
 782                      * Can also happen on thread switches - in that case findThreadContextForSwapChain
 783                      * is perfect to call.
 784                      */
 785                     context = findThreadContextForSwapChain(This->swapchains[0], tid);
 786                 }
 787                 break;
 788
 789             case ORM_PBUFFER:
 790             {
 791                 IWineD3DSurfaceImpl *targetimpl = (IWineD3DSurfaceImpl *) target;
 792                 if(This->pbufferContext == NULL ||
 793                    This->pbufferWidth < targetimpl->currentDesc.Width ||
 794                    This->pbufferHeight < targetimpl->currentDesc.Height) {
 795                     if(This->pbufferContext) {
 796                         DestroyContext(This, This->pbufferContext);
 797                     }
 798
 799                     /* The display is irrelevant here, the window is 0. But CreateContext needs a valid X connection.
 800                      * Create the context on the same server as the primary swapchain. The primary swapchain is exists at this point.
 801                      */
 802                     This->pbufferContext = CreateContext(This, targetimpl,
 803                             ((IWineD3DSwapChainImpl *) This->swapchains[0])->context[0]->win_handle,
 804                             TRUE /* pbuffer */, &((IWineD3DSwapChainImpl *)This->swapchains[0])->presentParms);
 805                     This->pbufferWidth = targetimpl->currentDesc.Width;
 806                     This->pbufferHeight = targetimpl->currentDesc.Height;
 807                    }
 808
 809                    if(This->pbufferContext) {
 810                        if(This->pbufferContext->tid != 0 && This->pbufferContext->tid != tid) {
 811                            FIXME("The PBuffr context is only supported for one thread for now!\n");
 812                        }
 813                        This->pbufferContext->tid = tid;
 814                        context = This->pbufferContext;
 815                        break;
 816                    } else {
 817                        ERR("Failed to create a buffer context and drawable, falling back to back buffer offscreen rendering\n");
 818                        wined3d_settings.offscreen_rendering_mode = ORM_BACKBUFFER;
 819                    }
 820             }
 821
 822             case ORM_BACKBUFFER:
 823                 /* Stay with the currently active context for back buffer rendering */
 824                 if(This->activeContext && tid == This->lastThread) {
 825                     context = This->activeContext;
 826                 } else {
 827                     /* This may happen if the app jumps straight into offscreen rendering
 828                      * Start using the context of the primary swapchain. tid == 0 is no problem
 829                      * for findThreadContextForSwapChain.
 830                      *
 831                      * Can also happen on thread switches - in that case findThreadContextForSwapChain
 832                      * is perfect to call.
 833                      */
 834                     context = findThreadContextForSwapChain(This->swapchains[0], tid);
 835                 }
 836                 break;
 837         }
 838
 839         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) {
 840             /* Make sure we have a OpenGL texture name so the PreLoad() used to read the buffer
 841              * back when we are done won't mark us dirty.
 842              */
 843             IWineD3DSurface_PreLoad(target);
 844         }
 845
 846         if(!oldRenderOffscreen) {
 847             Context_MarkStateDirty(context, WINED3DTS_PROJECTION, StateTable);
 848             Context_MarkStateDirty(context, STATE_VDECL, StateTable);
 849             Context_MarkStateDirty(context, STATE_VIEWPORT, StateTable);
 850             Context_MarkStateDirty(context, STATE_SCISSORRECT, StateTable);
 851             Context_MarkStateDirty(context, STATE_FRONTFACE, StateTable);
 852         }
 853     }
 854     if (readTexture) {
 855         BOOL oldInDraw = This->isInDraw;
 856
 857         /* PreLoad requires a context to load the texture, thus it will call ActivateContext.
 858          * Set the isInDraw to true to signal PreLoad that it has a context. Will be tricky
 859          * when using offscreen rendering with multithreading
 860          */
 861         This->isInDraw = TRUE;
 862
 863         /* Do that before switching the context:
 864          * Read the back buffer of the old drawable into the destination texture
 865          */
 866         IWineD3DSurface_PreLoad(This->lastActiveRenderTarget);
 867
 868         /* Assume that the drawable will be modified by some other things now */
 869         IWineD3DSurface_ModifyLocation(This->lastActiveRenderTarget, SFLAG_INDRAWABLE, FALSE);
 870
 871         This->isInDraw = oldInDraw;
 872     }
 873
 874     if(oldRenderOffscreen != This->render_offscreen && This->depth_copy_state != WINED3D_DCS_NO_COPY) {
 875         This->depth_copy_state = WINED3D_DCS_COPY;
 876     }
 877     return context;
 878 }
 879
 880 /*****************************************************************************
 881  * ActivateContext
 882  *
 883  * Finds a rendering context and drawable matching the device and render
 884  * target for the current thread, activates them and puts them into the
 885  * requested state.
 886  *
 887  * Params:
 888  *  This: Device to activate the context for
 889  *  target: Requested render target
 890  *  usage: Prepares the context for blitting, drawing or other actions
 891  *
 892  *****************************************************************************/
 893 void ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, ContextUsage usage) {
 894     DWORD                         tid = GetCurrentThreadId();
 895     int                           i;
 896     DWORD                         dirtyState, idx;
 897     BYTE                          shift;
 898     WineD3DContext                *context;
 899     GLint                         drawBuffer=0;
 900     const struct StateEntry       *StateTable = This->shader_backend->StateTable;
 901
 902     TRACE("(%p): Selecting context for render target %p, thread %d\n", This, target, tid);
 903     if(This->lastActiveRenderTarget != target || tid != This->lastThread) {
 904         context = FindContext(This, target, tid, &drawBuffer);
 905         This->lastActiveRenderTarget = target;
 906         This->lastThread = tid;
 907     } else {
 908         /* Stick to the old context */
 909         context = This->activeContext;
 910     }
 911
 912     /* Activate the opengl context */
 913     if(context != This->activeContext) {
 914         BOOL ret;
 915
 916         /* Prevent an unneeded context switch as those are expensive */
 917         if(context->glCtx && (context->glCtx == pwglGetCurrentContext())) {
 918             TRACE("Already using gl context %p\n", context->glCtx);
 919         }
 920         else {
 921             TRACE("Switching gl ctx to %p, hdc=%p ctx=%p\n", context, context->hdc, context->glCtx);
 922             ret = pwglMakeCurrent(context->hdc, context->glCtx);
 923             if(ret == FALSE) {
 924                 ERR("Failed to activate the new context\n");
 925             }
 926         }
 927         if(This->activeContext->vshader_const_dirty) {
 928             memset(This->activeContext->vshader_const_dirty, 1,
 929                    sizeof(*This->activeContext->vshader_const_dirty) * GL_LIMITS(vshader_constantsF));
 930         }
 931         if(This->activeContext->pshader_const_dirty) {
 932             memset(This->activeContext->pshader_const_dirty, 1,
 933                    sizeof(*This->activeContext->pshader_const_dirty) * GL_LIMITS(pshader_constantsF));
 934         }
 935         This->activeContext = context;
 936     }
 937
 938     /* We only need ENTER_GL for the gl calls made below and for the helper functions which make GL calls */
 939     ENTER_GL();
 940     /* Select the right draw buffer. It is selected in FindContext. */
 941     if(drawBuffer && context->last_draw_buffer != drawBuffer) {
 942         TRACE("Drawing to buffer: %#x\n", drawBuffer);
 943         context->last_draw_buffer = drawBuffer;
 944
 945         glDrawBuffer(drawBuffer);
 946         checkGLcall("glDrawBuffer");
 947     }
 948
 949     switch(usage) {
 950         case CTXUSAGE_RESOURCELOAD:
 951             /* This does not require any special states to be set up */
 952             break;
 953
 954         case CTXUSAGE_CLEAR:
 955             if(context->last_was_blit) {
 956                 if(GL_SUPPORT(NV_TEXTURE_SHADER2)) {
 957                     glEnable(GL_TEXTURE_SHADER_NV);
 958                     checkGLcall("glEnable(GL_TEXTURE_SHADER_NV)");
 959                 } else if(GL_SUPPORT(ATI_FRAGMENT_SHADER)) {
 960                     glEnable(GL_FRAGMENT_SHADER_ATI);
 961                     checkGLcall("glEnable(GL_FRAGMENT_SHADER_ATI)");
 962                 }
 963             }
 964
 965             glEnable(GL_SCISSOR_TEST);
 966             checkGLcall("glEnable GL_SCISSOR_TEST");
 967             context->last_was_blit = FALSE;
 968             Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE), StateTable);
 969             Context_MarkStateDirty(context, STATE_SCISSORRECT, StateTable);
 970             break;
 971
 972         case CTXUSAGE_DRAWPRIM:
 973             /* This needs all dirty states applied */
 974             if(context->last_was_blit) {
 975                 if(GL_SUPPORT(NV_TEXTURE_SHADER2)) {
 976                     glEnable(GL_TEXTURE_SHADER_NV);
 977                     checkGLcall("glEnable(GL_TEXTURE_SHADER_NV)");
 978                 } else if(GL_SUPPORT(ATI_FRAGMENT_SHADER)) {
 979                     glEnable(GL_FRAGMENT_SHADER_ATI);
 980                     checkGLcall("glEnable(GL_FRAGMENT_SHADER_ATI)");
 981                 }
 982             }
 983
 984             IWineD3DDeviceImpl_FindTexUnitMap(This);
 985
 986             for(i=0; i < context->numDirtyEntries; i++) {
 987                 dirtyState = context->dirtyArray[i];
 988                 idx = dirtyState >> 5;
 989                 shift = dirtyState & 0x1f;
 990                 context->isStateDirty[idx] &= ~(1 << shift);
 991                 StateTable[dirtyState].apply(dirtyState, This->stateBlock, context);
 992             }
 993             context->numDirtyEntries = 0; /* This makes the whole list clean */
 994             context->last_was_blit = FALSE;
 995             break;
 996
 997         case CTXUSAGE_BLIT:
 998             SetupForBlit(This, context,
 999                          ((IWineD3DSurfaceImpl *)target)->currentDesc.Width,
1000                          ((IWineD3DSurfaceImpl *)target)->currentDesc.Height);
1001             break;
1002
1003         default:
1004             FIXME("Unexpected context usage requested\n");
1005     }
1006     LEAVE_GL();
1007 }