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 ((IWineD3DImpl *)(This->wineD3D))->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  *
  43  *****************************************************************************/
  44 static void Context_MarkStateDirty(WineD3DContext *context, DWORD state) {
  45     DWORD rep = StateTable[state].representative;
  46     DWORD idx;
  47     BYTE shift;
  48
  49     if(!rep || isStateDirty(context, rep)) return;
  50
  51     context->dirtyArray[context->numDirtyEntries++] = rep;
  52     idx = rep >> 5;
  53     shift = rep & 0x1f;
  54     context->isStateDirty[idx] |= (1 << shift);
  55 }
  56
  57 /*****************************************************************************
  58  * AddContextToArray
  59  *
  60  * Adds a context to the context array. Helper function for CreateContext
  61  *
  62  * This method is not called in performance-critical code paths, only when a
  63  * new render target or swapchain is created. Thus performance is not an issue
  64  * here.
  65  *
  66  * Params:
  67  *  This: Device to add the context for
  68  *  display: X display this context uses
  69  *  glCtx: glX context to add
  70  *  drawable: drawable used with this context.
  71  *
  72  *****************************************************************************/
  73 static WineD3DContext *AddContextToArray(IWineD3DDeviceImpl *This, Display *display, GLXContext glCtx, Drawable drawable) {
  74     WineD3DContext **oldArray = This->contexts;
  75     DWORD state;
  76
  77     This->contexts = HeapAlloc(GetProcessHeap(), 0, sizeof(*This->contexts) * (This->numContexts + 1));
  78     if(This->contexts == NULL) {
  79         ERR("Unable to grow the context array\n");
  80         This->contexts = oldArray;
  81         return NULL;
  82     }
  83     if(oldArray) {
  84         memcpy(This->contexts, oldArray, sizeof(*This->contexts) * This->numContexts);
  85     }
  86
  87     This->contexts[This->numContexts] = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WineD3DContext));
  88     if(This->contexts[This->numContexts] == NULL) {
  89         ERR("Unable to allocate a new context\n");
  90         HeapFree(GetProcessHeap(), 0, This->contexts);
  91         This->contexts = oldArray;
  92         return NULL;
  93     }
  94
  95     This->contexts[This->numContexts]->display = display;
  96     This->contexts[This->numContexts]->glCtx = glCtx;
  97     This->contexts[This->numContexts]->drawable = drawable;
  98     HeapFree(GetProcessHeap(), 0, oldArray);
  99
 100     /* Mark all states dirty to force a proper initialization of the states on the first use of the context
 101      */
 102     for(state = 0; state <= STATE_HIGHEST; state++) {
 103         Context_MarkStateDirty(This->contexts[This->numContexts], state);
 104     }
 105
 106     This->numContexts++;
 107     TRACE("Created context %p\n", This->contexts[This->numContexts - 1]);
 108     return This->contexts[This->numContexts - 1];
 109 }
 110
 111 /* Returns an array of compatible FBconfig(s).
 112  * The array must be freed with XFree. Requires ENTER_GL()
 113  */
 114 static GLXFBConfig* pbuffer_find_fbconfigs(
 115     IWineD3DDeviceImpl* This,
 116     IWineD3DSurfaceImpl* RenderSurface,
 117     Display *display) {
 118
 119     GLXFBConfig* cfgs = NULL;
 120     int nCfgs = 0;
 121     int attribs[256];
 122     int nAttribs = 0;
 123
 124     IWineD3DSurface *StencilSurface = This->stencilBufferTarget;
 125     WINED3DFORMAT BackBufferFormat = RenderSurface->resource.format;
 126     WINED3DFORMAT StencilBufferFormat = (NULL != StencilSurface) ? ((IWineD3DSurfaceImpl *) StencilSurface)->resource.format : 0;
 127
 128     /* TODO:
 129      *  if StencilSurface == NULL && zBufferTarget != NULL then switch the zbuffer off,
 130      *  it StencilSurface != NULL && zBufferTarget == NULL switch it on
 131      */
 132
 133 #define PUSH1(att)        attribs[nAttribs++] = (att);
 134 #define PUSH2(att,value)  attribs[nAttribs++] = (att); attribs[nAttribs++] = (value);
 135
 136     /* PUSH2(GLX_BIND_TO_TEXTURE_RGBA_ATI, True); examples of this are few and far between (but I've got a nice working one!)*/
 137
 138     PUSH2(GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT);
 139     PUSH2(GLX_X_RENDERABLE,  TRUE);
 140     PUSH2(GLX_DOUBLEBUFFER,  TRUE);
 141     TRACE("calling makeglcfg\n");
 142     D3DFmtMakeGlCfg(BackBufferFormat, StencilBufferFormat, attribs, &nAttribs, FALSE /* alternate */);
 143     PUSH1(None);
 144     TRACE("calling chooseFGConfig\n");
 145     cfgs = glXChooseFBConfig(display,
 146                              DefaultScreen(display),
 147                              attribs, &nCfgs);
 148     if (cfgs == NULL) {
 149         /* OK we didn't find the exact config, so use any reasonable match */
 150         /* TODO: fill in the 'requested' and 'current' depths, and make sure that's
 151            why we failed. */
 152         static BOOL show_message = TRUE;
 153         if (show_message) {
 154             ERR("Failed to find exact match, finding alternative but you may "
 155                 "suffer performance issues, try changing xfree's depth to match the requested depth\n");
 156             show_message = FALSE;
 157         }
 158         nAttribs = 0;
 159         PUSH2(GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT | GLX_WINDOW_BIT);
 160         /* PUSH2(GLX_X_RENDERABLE,  TRUE); */
 161         PUSH2(GLX_RENDER_TYPE,   GLX_RGBA_BIT);
 162         PUSH2(GLX_DOUBLEBUFFER, FALSE);
 163         TRACE("calling makeglcfg\n");
 164         D3DFmtMakeGlCfg(BackBufferFormat, StencilBufferFormat, attribs, &nAttribs, TRUE /* alternate */);
 165         PUSH1(None);
 166         cfgs = glXChooseFBConfig(display,
 167                                  DefaultScreen(display),
 168                                  attribs, &nCfgs);
 169     }
 170
 171     if (cfgs == NULL) {
 172         ERR("Could not get a valid FBConfig for (%u,%s)/(%u,%s)\n",
 173             BackBufferFormat, debug_d3dformat(BackBufferFormat),
 174             StencilBufferFormat, debug_d3dformat(StencilBufferFormat));
 175     } else {
 176 #ifdef EXTRA_TRACES
 177         int i;
 178         for (i = 0; i < nCfgs; ++i) {
 179             TRACE("for (%u,%s)/(%u,%s) found config[%d]@%p\n", BackBufferFormat,
 180             debug_d3dformat(BackBufferFormat), StencilBufferFormat,
 181             debug_d3dformat(StencilBufferFormat), i, cfgs[i]);
 182         }
 183 #endif
 184     }
 185 #undef PUSH1
 186 #undef PUSH2
 187
 188    return cfgs;
 189 }
 190
 191 /*****************************************************************************
 192  * CreateContext
 193  *
 194  * Creates a new context for a window, or a pbuffer context.
 195  *
 196  * * Params:
 197  *  This: Device to activate the context for
 198  *  target: Surface this context will render to
 199  *  display: X11 connection
 200  *  win: Target window. NULL for a pbuffer
 201  *
 202  *****************************************************************************/
 203 WineD3DContext *CreateContext(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *target, Display *display, Window win) {
 204     Drawable drawable = win, oldDrawable;
 205     XVisualInfo *visinfo = NULL;
 206     GLXFBConfig *cfgs = NULL;
 207     GLXContext ctx = NULL, oldCtx;
 208     WineD3DContext *ret = NULL;
 209
 210     TRACE("(%p): Creating a %s context for render target %p\n", This, win ? "onscreen" : "offscreen", target);
 211
 212     if(!win) {
 213         int attribs[256];
 214         int nAttribs = 0;
 215
 216         TRACE("Creating a pBuffer drawable for the new context\n");
 217
 218         cfgs = pbuffer_find_fbconfigs(This, target, display);
 219         if(!cfgs) {
 220             ERR("Cannot find a frame buffer configuration for the pbuffer\n");
 221             goto out;
 222         }
 223
 224         attribs[nAttribs++] = GLX_PBUFFER_WIDTH;
 225         attribs[nAttribs++] = target->currentDesc.Width;
 226         attribs[nAttribs++] = GLX_PBUFFER_HEIGHT;
 227         attribs[nAttribs++] = target->currentDesc.Height;
 228         attribs[nAttribs++] = None;
 229
 230         visinfo = glXGetVisualFromFBConfig(display, cfgs[0]);
 231         if(!visinfo) {
 232             ERR("Cannot find a visual for the pbuffer\n");
 233             goto out;
 234         }
 235
 236         drawable = glXCreatePbuffer(display, cfgs[0], attribs);
 237
 238         if(!drawable) {
 239             ERR("Cannot create a pbuffer\n");
 240             goto out;
 241         }
 242         XFree(cfgs);
 243         cfgs = NULL;
 244     } else {
 245         /* Create an onscreen target */
 246         XVisualInfo             template;
 247         int                     num;
 248
 249         template.visualid = (VisualID)GetPropA(GetDesktopWindow(), "__wine_x11_visual_id");
 250         /* TODO: change this to find a similar visual, but one with a stencil/zbuffer buffer that matches the request
 251         (or the best possible if none is requested) */
 252         TRACE("Found x visual ID  : %ld\n", template.visualid);
 253         visinfo   = XGetVisualInfo(display, VisualIDMask, &template, &num);
 254
 255         if (NULL == visinfo) {
 256             ERR("cannot really get XVisual\n");
 257             goto out;
 258         } else {
 259             int n, value;
 260             /* Write out some debug info about the visual/s */
 261             TRACE("Using x visual ID  : %ld\n", template.visualid);
 262             TRACE("        visual info: %p\n", visinfo);
 263             TRACE("        num items  : %d\n", num);
 264             for (n = 0;n < num; n++) {
 265                 TRACE("=====item=====: %d\n", n + 1);
 266                 TRACE("   visualid      : %ld\n", visinfo[n].visualid);
 267                 TRACE("   screen        : %d\n",  visinfo[n].screen);
 268                 TRACE("   depth         : %u\n",  visinfo[n].depth);
 269                 TRACE("   class         : %d\n",  visinfo[n].class);
 270                 TRACE("   red_mask      : %ld\n", visinfo[n].red_mask);
 271                 TRACE("   green_mask    : %ld\n", visinfo[n].green_mask);
 272                 TRACE("   blue_mask     : %ld\n", visinfo[n].blue_mask);
 273                 TRACE("   colormap_size : %d\n",  visinfo[n].colormap_size);
 274                 TRACE("   bits_per_rgb  : %d\n",  visinfo[n].bits_per_rgb);
 275                 /* log some extra glx info */
 276                 glXGetConfig(display, visinfo, GLX_AUX_BUFFERS, &value);
 277                 TRACE("   gl_aux_buffers  : %d\n",  value);
 278                 glXGetConfig(display, visinfo, GLX_BUFFER_SIZE ,&value);
 279                 TRACE("   gl_buffer_size  : %d\n",  value);
 280                 glXGetConfig(display, visinfo, GLX_RED_SIZE, &value);
 281                 TRACE("   gl_red_size  : %d\n",  value);
 282                 glXGetConfig(display, visinfo, GLX_GREEN_SIZE, &value);
 283                 TRACE("   gl_green_size  : %d\n",  value);
 284                 glXGetConfig(display, visinfo, GLX_BLUE_SIZE, &value);
 285                 TRACE("   gl_blue_size  : %d\n",  value);
 286                 glXGetConfig(display, visinfo, GLX_ALPHA_SIZE, &value);
 287                 TRACE("   gl_alpha_size  : %d\n",  value);
 288                 glXGetConfig(display, visinfo, GLX_DEPTH_SIZE ,&value);
 289                 TRACE("   gl_depth_size  : %d\n",  value);
 290                 glXGetConfig(display, visinfo, GLX_STENCIL_SIZE, &value);
 291                 TRACE("   gl_stencil_size : %d\n",  value);
 292             }
 293             /* Now choose a similar visual ID*/
 294         }
 295     }
 296
 297     ctx = glXCreateContext(display, visinfo,
 298                            This->numContexts ? This->contexts[0]->glCtx : NULL,
 299                            GL_TRUE);
 300     if(!ctx) {
 301         ERR("Failed to create a glX context\n");
 302         if(drawable != win) glXDestroyPbuffer(display, drawable);
 303         goto out;
 304     }
 305     ret = AddContextToArray(This, display, ctx, drawable);
 306     if(!ret) {
 307         ERR("Failed to add the newly created context to the context list\n");
 308         glXDestroyContext(display, ctx);
 309         if(drawable != win) glXDestroyPbuffer(display, drawable);
 310         goto out;
 311     }
 312     ret->surface = (IWineD3DSurface *) target;
 313     ret->isPBuffer = win == 0;
 314
 315     TRACE("Successfully created new context %p\n", ret);
 316
 317     /* Set up the context defaults */
 318     oldCtx  = glXGetCurrentContext();
 319     oldDrawable = glXGetCurrentDrawable();
 320     if(glXMakeCurrent(display, drawable, ctx) == FALSE) {
 321         ERR("Cannot activate context to set up defaults\n");
 322         goto out;
 323     }
 324
 325     TRACE("Setting up the screen\n");
 326     /* Clear the screen */
 327     glClearColor(1.0, 0.0, 0.0, 0.0);
 328     checkGLcall("glClearColor");
 329     glClearIndex(0);
 330     glClearDepth(1);
 331     glClearStencil(0xffff);
 332
 333     checkGLcall("glClear");
 334
 335     glColor3f(1.0, 1.0, 1.0);
 336     checkGLcall("glColor3f");
 337
 338     glEnable(GL_LIGHTING);
 339     checkGLcall("glEnable");
 340
 341     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
 342     checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);");
 343
 344     glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
 345     checkGLcall("glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);");
 346
 347     glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
 348     checkGLcall("glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);");
 349
 350     glPixelStorei(GL_PACK_ALIGNMENT, SURFACE_ALIGNMENT);
 351     checkGLcall("glPixelStorei(GL_PACK_ALIGNMENT, SURFACE_ALIGNMENT);");
 352     glPixelStorei(GL_UNPACK_ALIGNMENT, SURFACE_ALIGNMENT);
 353     checkGLcall("glPixelStorei(GL_UNPACK_ALIGNMENT, SURFACE_ALIGNMENT);");
 354
 355     if(GL_SUPPORT(APPLE_CLIENT_STORAGE)) {
 356         /* Most textures will use client storage if supported. Exceptions are non-native power of 2 textures
 357          * and textures in DIB sections(due to the memory protection).
 358          */
 359         glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
 360         checkGLcall("glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE)");
 361     }
 362
 363     if(oldDrawable && oldCtx) {
 364         glXMakeCurrent(display, oldDrawable, oldCtx);
 365     }
 366
 367 out:
 368     if(visinfo) XFree(visinfo);
 369     if(cfgs) XFree(cfgs);
 370     return ret;
 371 }
 372
 373 /*****************************************************************************
 374  * RemoveContextFromArray
 375  *
 376  * Removes a context from the context manager. The opengl context is not
 377  * destroyed or unset. context is not a valid pointer after that call.
 378  *
 379  * Similar to the former call this isn't a performance critical function. A
 380  * helper function for DestroyContext.
 381  *
 382  * Params:
 383  *  This: Device to activate the context for
 384  *  context: Context to remove
 385  *
 386  *****************************************************************************/
 387 static void RemoveContextFromArray(IWineD3DDeviceImpl *This, WineD3DContext *context) {
 388     UINT t, s;
 389     WineD3DContext **oldArray = This->contexts;
 390
 391     TRACE("Removing ctx %p\n", context);
 392
 393     This->numContexts--;
 394
 395     if(This->numContexts) {
 396         This->contexts = HeapAlloc(GetProcessHeap(), 0, sizeof(*This->contexts) * This->numContexts);
 397         if(!This->contexts) {
 398             ERR("Cannot allocate a new context array, PANIC!!!\n");
 399         }
 400         t = 0;
 401         for(s = 0; s < This->numContexts; s++) {
 402             if(oldArray[s] == context) continue;
 403             This->contexts[t] = oldArray[s];
 404             t++;
 405         }
 406     } else {
 407         This->contexts = NULL;
 408     }
 409
 410     HeapFree(GetProcessHeap(), 0, context);
 411     HeapFree(GetProcessHeap(), 0, oldArray);
 412 }
 413
 414 /*****************************************************************************
 415  * DestroyContext
 416  *
 417  * Destroys a wineD3DContext
 418  *
 419  * Params:
 420  *  This: Device to activate the context for
 421  *  context: Context to destroy
 422  *
 423  *****************************************************************************/
 424 void DestroyContext(IWineD3DDeviceImpl *This, WineD3DContext *context) {
 425
 426     /* check that we are the current context first */
 427     TRACE("Destroying ctx %p\n", context);
 428     if(glXGetCurrentContext() == context->glCtx){
 429         glXMakeCurrent(context->display, None, NULL);
 430     }
 431
 432     glXDestroyContext(context->display, context->glCtx);
 433     if(context->isPBuffer) {
 434         glXDestroyPbuffer(context->display, context->drawable);
 435     }
 436     RemoveContextFromArray(This, context);
 437 }
 438
 439 /*****************************************************************************
 440  * SetupForBlit
 441  *
 442  * Sets up a context for DirectDraw blitting.
 443  * All texture units are disabled, except unit 0
 444  * Texture unit 0 is activted where GL_TEXTURE_2D is activated
 445  * fog, lighting, blending, alpha test, z test, scissor test, culling diabled
 446  * color writing enabled for all channels
 447  * register combiners disabled, shaders disabled
 448  * world matris is set to identity, texture matrix 0 too
 449  * projection matrix is setup for drawing screen coordinates
 450  *
 451  * Params:
 452  *  This: Device to activate the context for
 453  *  context: Context to setup
 454  *  width: render target width
 455  *  height: render target height
 456  *
 457  *****************************************************************************/
 458 static inline void SetupForBlit(IWineD3DDeviceImpl *This, WineD3DContext *context, UINT width, UINT height) {
 459     int i;
 460
 461     TRACE("Setting up context %p for blitting\n", context);
 462     if(context->last_was_blit) {
 463         TRACE("Context is already set up for blitting, nothing to do\n");
 464         return;
 465     }
 466     context->last_was_blit = TRUE;
 467
 468     /* TODO: Use a display list */
 469
 470     /* Disable shaders */
 471     This->shader_backend->shader_cleanup((IWineD3DDevice *) This);
 472     Context_MarkStateDirty(context, STATE_VSHADER);
 473     Context_MarkStateDirty(context, STATE_PIXELSHADER);
 474
 475     /* Disable all textures. The caller can then bind a texture it wants to blit
 476      * from
 477      */
 478     if(GL_SUPPORT(NV_REGISTER_COMBINERS)) {
 479         glDisable(GL_REGISTER_COMBINERS_NV);
 480         checkGLcall("glDisable(GL_REGISTER_COMBINERS_NV)");
 481     }
 482     if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 483         /* The blitting code uses (for now) the fixed function pipeline, so make sure to reset all fixed
 484          * function texture unit. No need to care for higher samplers
 485          */
 486         for(i = GL_LIMITS(textures) - 1; i > 0 ; i--) {
 487             GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB + i));
 488             checkGLcall("glActiveTextureARB");
 489
 490             if(GL_SUPPORT(ARB_TEXTURE_CUBE_MAP)) {
 491                 glDisable(GL_TEXTURE_CUBE_MAP_ARB);
 492                 checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
 493             }
 494             glDisable(GL_TEXTURE_3D);
 495             checkGLcall("glDisable GL_TEXTURE_3D");
 496             glDisable(GL_TEXTURE_2D);
 497             checkGLcall("glDisable GL_TEXTURE_2D");
 498
 499             glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 500             checkGLcall("glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);");
 501
 502             Context_MarkStateDirty(context, STATE_TEXTURESTAGE(i, WINED3DTSS_COLOROP));
 503             Context_MarkStateDirty(context, STATE_SAMPLER(i));
 504         }
 505         GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
 506         checkGLcall("glActiveTextureARB");
 507     }
 508     if(GL_SUPPORT(ARB_TEXTURE_CUBE_MAP)) {
 509         glDisable(GL_TEXTURE_CUBE_MAP_ARB);
 510         checkGLcall("glDisable GL_TEXTURE_CUBE_MAP_ARB");
 511     }
 512     glDisable(GL_TEXTURE_3D);
 513     checkGLcall("glDisable GL_TEXTURE_3D");
 514     glEnable(GL_TEXTURE_2D);
 515     checkGLcall("glEnable GL_TEXTURE_2D");
 516
 517     glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 518
 519     glMatrixMode(GL_TEXTURE);
 520     checkGLcall("glMatrixMode(GL_TEXTURE)");
 521     glLoadIdentity();
 522     checkGLcall("glLoadIdentity()");
 523     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_TEXTURE0));
 524
 525     if (GL_SUPPORT(EXT_TEXTURE_LOD_BIAS)) {
 526         glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 527                   GL_TEXTURE_LOD_BIAS_EXT,
 528                   0.0);
 529         checkGLcall("glTexEnvi GL_TEXTURE_LOD_BIAS_EXT ...");
 530     }
 531     Context_MarkStateDirty(context, STATE_SAMPLER(0));
 532     Context_MarkStateDirty(context, STATE_TEXTURESTAGE(0, WINED3DTSS_COLOROP));
 533
 534     /* Other misc states */
 535     glDisable(GL_ALPHA_TEST);
 536     checkGLcall("glDisable(GL_ALPHA_TEST)");
 537     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHATESTENABLE));
 538     glDisable(GL_LIGHTING);
 539     checkGLcall("glDisable GL_LIGHTING");
 540     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_LIGHTING));
 541     glDisable(GL_DEPTH_TEST);
 542     checkGLcall("glDisable GL_DEPTH_TEST");
 543     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ZENABLE));
 544     glDisable(GL_FOG);
 545     checkGLcall("glDisable GL_FOG");
 546     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_FOGENABLE));
 547     glDisable(GL_BLEND);
 548     checkGLcall("glDisable GL_BLEND");
 549     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_ALPHABLENDENABLE));
 550     glDisable(GL_CULL_FACE);
 551     checkGLcall("glDisable GL_CULL_FACE");
 552     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CULLMODE));
 553     glDisable(GL_STENCIL_TEST);
 554     checkGLcall("glDisable GL_STENCIL_TEST");
 555     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_STENCILENABLE));
 556     if(GL_SUPPORT(ARB_POINT_SPRITE)) {
 557         glDisable(GL_POINT_SPRITE_ARB);
 558         checkGLcall("glDisable GL_POINT_SPRITE_ARB");
 559         Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_POINTSPRITEENABLE));
 560     }
 561     glColorMask(GL_TRUE, GL_TRUE,GL_TRUE,GL_TRUE);
 562     checkGLcall("glColorMask");
 563     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CLIPPING));
 564
 565     /* Setup transforms */
 566     glMatrixMode(GL_MODELVIEW);
 567     checkGLcall("glMatrixMode(GL_MODELVIEW)");
 568     glLoadIdentity();
 569     checkGLcall("glLoadIdentity()");
 570     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_WORLDMATRIX(0)));
 571
 572     glMatrixMode(GL_PROJECTION);
 573     checkGLcall("glMatrixMode(GL_PROJECTION)");
 574     glLoadIdentity();
 575     checkGLcall("glLoadIdentity()");
 576     glOrtho(0, width, height, 0, 0.0, -1.0);
 577     checkGLcall("glOrtho");
 578     Context_MarkStateDirty(context, STATE_TRANSFORM(WINED3DTS_PROJECTION));
 579
 580     context->last_was_rhw = TRUE;
 581     Context_MarkStateDirty(context, STATE_VDECL); /* because of last_was_rhw = TRUE */
 582
 583     glDisable(GL_CLIP_PLANE0); checkGLcall("glDisable(clip plane 0)");
 584     glDisable(GL_CLIP_PLANE1); checkGLcall("glDisable(clip plane 1)");
 585     glDisable(GL_CLIP_PLANE2); checkGLcall("glDisable(clip plane 2)");
 586     glDisable(GL_CLIP_PLANE3); checkGLcall("glDisable(clip plane 3)");
 587     glDisable(GL_CLIP_PLANE4); checkGLcall("glDisable(clip plane 4)");
 588     glDisable(GL_CLIP_PLANE5); checkGLcall("glDisable(clip plane 5)");
 589     Context_MarkStateDirty(context, STATE_RENDER(WINED3DRS_CLIPPING));
 590
 591     glViewport(0, 0, width, height);
 592     checkGLcall("glViewport");
 593     Context_MarkStateDirty(context, STATE_VIEWPORT);
 594 }
 595
 596 /*****************************************************************************
 597  * ActivateContext
 598  *
 599  * Finds a rendering context and drawable matching the device and render
 600  * target for the current thread, activates them and puts them into the
 601  * requested state.
 602  *
 603  * Params:
 604  *  This: Device to activate the context for
 605  *  target: Requested render target
 606  *  usage: Prepares the context for blitting, drawing or other actions
 607  *
 608  *****************************************************************************/
 609 void ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, ContextUsage usage) {
 610     DWORD tid = This->createParms.BehaviorFlags & WINED3DCREATE_MULTITHREADED ? GetCurrentThreadId() : 0;
 611     int                           i;
 612     DWORD                         dirtyState, idx;
 613     BYTE                          shift;
 614     WineD3DContext                *context = This->activeContext;
 615     BOOL                          oldRenderOffscreen = This->render_offscreen;
 616
 617     TRACE("(%p): Selecting context for render target %p, thread %d\n", This, target, tid);
 618
 619     if(This->lastActiveRenderTarget != target) {
 620         IWineD3DSwapChain *swapchain = NULL;
 621         HRESULT hr;
 622         BOOL readTexture = wined3d_settings.offscreen_rendering_mode != ORM_FBO && This->render_offscreen;
 623
 624         hr = IWineD3DSurface_GetContainer(target, &IID_IWineD3DSwapChain, (void **) &swapchain);
 625         if(hr == WINED3D_OK && swapchain) {
 626             TRACE("Rendering onscreen\n");
 627             context = ((IWineD3DSwapChainImpl *) swapchain)->context[0];
 628             This->render_offscreen = FALSE;
 629             /* The context != This->activeContext will catch a NOP context change. This can occur
 630              * if we are switching back to swapchain rendering in case of FBO or Back Buffer offscreen
 631              * rendering. No context change is needed in that case
 632              */
 633
 634             if (wined3d_settings.offscreen_rendering_mode == ORM_FBO && oldRenderOffscreen) {
 635                 set_render_target_fbo((IWineD3DDevice *) This, 0, target);
 636             } else if(wined3d_settings.offscreen_rendering_mode == ORM_BACKBUFFER) {
 637                 if(((IWineD3DSwapChainImpl *) swapchain)->backBuffer) {
 638                     glDrawBuffer(GL_BACK);
 639                     checkGLcall("glDrawBuffer(GL_BACK)");
 640                 } else {
 641                     glDrawBuffer(GL_FRONT);
 642                     checkGLcall("glDrawBuffer(GL_FRONT)");
 643                 }
 644             }
 645             IWineD3DSwapChain_Release(swapchain);
 646
 647             if(oldRenderOffscreen) {
 648                 Context_MarkStateDirty(context, WINED3DRS_CULLMODE);
 649                 Context_MarkStateDirty(context, WINED3DTS_PROJECTION);
 650                 Context_MarkStateDirty(context, STATE_VDECL);
 651                 Context_MarkStateDirty(context, STATE_VIEWPORT);
 652             }
 653         } else {
 654             TRACE("Rendering offscreen\n");
 655             This->render_offscreen = TRUE;
 656
 657             switch(wined3d_settings.offscreen_rendering_mode) {
 658                 case ORM_FBO:
 659                     /* FBOs do not need a different context. Stay with whatever context is active at the moment */
 660                     if(This->activeContext) {
 661                         context = This->activeContext;
 662                     } else {
 663                         /* This may happen if the app jumps streight into offscreen rendering
 664                          * Start using the context of the primary swapchain
 665                          */
 666                         context = ((IWineD3DSwapChainImpl *) This->swapchains[0])->context[0];
 667                     }
 668                     set_render_target_fbo((IWineD3DDevice *) This, 0, target);
 669                     break;
 670
 671                 case ORM_PBUFFER:
 672                 {
 673                     IWineD3DSurfaceImpl *targetimpl = (IWineD3DSurfaceImpl *) target;
 674                     if(This->pbufferContext == NULL ||
 675                        This->pbufferWidth < targetimpl->currentDesc.Width ||
 676                        This->pbufferHeight < targetimpl->currentDesc.Height) {
 677                         if(This->pbufferContext) {
 678                             DestroyContext(This, This->pbufferContext);
 679                         }
 680
 681                         /* The display is irrelevant here, the window is 0. But CreateContext needs a valid X connection.
 682                          * Create the context on the same server as the primary swapchain. The primary swapchain is exists at this point.
 683                          */
 684                         This->pbufferContext = CreateContext(This, targetimpl,
 685                                                              ((IWineD3DSwapChainImpl *) This->swapchains[0])->context[0]->display,
 686                                                              0 /* Window */);
 687                         This->pbufferWidth = targetimpl->currentDesc.Width;
 688                         This->pbufferHeight = targetimpl->currentDesc.Height;
 689                     }
 690
 691                     if(This->pbufferContext) {
 692                         context = This->pbufferContext;
 693                         break;
 694                     } else {
 695                         ERR("Failed to create a buffer context and drawable, falling back to back buffer offscreen rendering\n");
 696                         wined3d_settings.offscreen_rendering_mode = ORM_BACKBUFFER;
 697                     }
 698                 }
 699
 700                 case ORM_BACKBUFFER:
 701                     /* Stay with the currently active context for back buffer rendering */
 702                     if(This->activeContext) {
 703                         context = This->activeContext;
 704                     } else {
 705                         /* This may happen if the app jumps streight into offscreen rendering
 706                          * Start using the context of the primary swapchain
 707                          */
 708                         context = ((IWineD3DSwapChainImpl *) This->swapchains[0])->context[0];
 709                     }
 710                     glDrawBuffer(This->offscreenBuffer);
 711                     checkGLcall("glDrawBuffer(This->offscreenBuffer)");
 712                     break;
 713             }
 714
 715             if(!oldRenderOffscreen) {
 716                 Context_MarkStateDirty(context, WINED3DRS_CULLMODE);
 717                 Context_MarkStateDirty(context, WINED3DTS_PROJECTION);
 718                 Context_MarkStateDirty(context, STATE_VDECL);
 719                 Context_MarkStateDirty(context, STATE_VIEWPORT);
 720             }
 721         }
 722         if (readTexture) {
 723             BOOL oldInDraw = This->isInDraw;
 724
 725             /* PreLoad requires a context to load the texture, thus it will call ActivateContext.
 726              * Set the isInDraw to true to signal PreLoad that it has a context. Will be tricky
 727              * when using offscreen rendering with multithreading
 728              */
 729             This->isInDraw = TRUE;
 730
 731             /* Do that before switching the context:
 732              * Read the back buffer of the old drawable into the destination texture
 733              */
 734             IWineD3DSurface_PreLoad(This->lastActiveRenderTarget);
 735
 736             /* Assume that the drawable will be modified by some other things now */
 737             ((IWineD3DSurfaceImpl *) This->lastActiveRenderTarget)->Flags &= ~SFLAG_INDRAWABLE;
 738
 739             This->isInDraw = oldInDraw;
 740         }
 741         This->lastActiveRenderTarget = target;
 742         if(oldRenderOffscreen != This->render_offscreen && This->depth_copy_state != WINED3D_DCS_NO_COPY) {
 743             This->depth_copy_state = WINED3D_DCS_COPY;
 744         }
 745     } else {
 746         /* Stick to the old context */
 747         context = This->activeContext;
 748     }
 749
 750     /* Activate the opengl context */
 751     if(context != This->activeContext) {
 752         Bool ret;
 753         TRACE("Switching gl ctx to %p, drawable=%ld, ctx=%p\n", context, context->drawable, context->glCtx);
 754         ret = glXMakeCurrent(context->display, context->drawable, context->glCtx);
 755         if(ret == FALSE) {
 756             ERR("Failed to activate the new context\n");
 757         }
 758         This->activeContext = context;
 759     }
 760
 761     switch(usage) {
 762         case CTXUSAGE_RESOURCELOAD:
 763             /* This does not require any special states to be set up */
 764             break;
 765
 766         case CTXUSAGE_DRAWPRIM:
 767             /* This needs all dirty states applied */
 768             for(i=0; i < context->numDirtyEntries; i++) {
 769                 dirtyState = context->dirtyArray[i];
 770                 idx = dirtyState >> 5;
 771                 shift = dirtyState & 0x1f;
 772                 context->isStateDirty[idx] &= ~(1 << shift);
 773                 StateTable[dirtyState].apply(dirtyState, This->stateBlock, context);
 774             }
 775             context->numDirtyEntries = 0; /* This makes the whole list clean */
 776             context->last_was_blit = FALSE;
 777             break;
 778
 779         case CTXUSAGE_BLIT:
 780             SetupForBlit(This, context,
 781                          ((IWineD3DSurfaceImpl *)target)->currentDesc.Width,
 782                          ((IWineD3DSurfaceImpl *)target)->currentDesc.Height);
 783             break;
 784
 785         default:
 786             FIXME("Unexpected context usage requested\n");
 787     }
 788 }