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

   1 /*
   2  * WINED3D draw functions
   3  *
   4  * Copyright 2002-2004 Jason Edmeades
   5  * Copyright 2002-2004 Raphael Junqueira
   6  * Copyright 2004 Christian Costa
   7  * Copyright 2005 Oliver Stieber
   8  * Copyright 2006 Henri Verbeet
   9  * Copyright 2007 Stefan Dösinger for CodeWeavers
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include "config.h"
  27 #include "wined3d_private.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(d3d_draw);
  30 #define GLINFO_LOCATION This->adapter->gl_info
  31
  32 #include <stdio.h>
  33
  34 #if 0 /* TODO */
  35 extern IWineD3DVertexShaderImpl*            VertexShaders[64];
  36 extern IWineD3DVertexDeclarationImpl*       VertexShaderDeclarations[64];
  37 extern IWineD3DPixelShaderImpl*             PixelShaders[64];
  38
  39 #undef GL_VERSION_1_4 /* To be fixed, caused by mesa headers */
  40 #endif
  41
  42 /* Issues the glBegin call for gl given the primitive type and count */
  43 static DWORD primitiveToGl(WINED3DPRIMITIVETYPE PrimitiveType,
  44                     DWORD            NumPrimitives,
  45                     GLenum          *primType)
  46 {
  47     DWORD   NumVertexes = NumPrimitives;
  48
  49     switch (PrimitiveType) {
  50     case WINED3DPT_POINTLIST:
  51         TRACE("POINTS\n");
  52         *primType   = GL_POINTS;
  53         NumVertexes = NumPrimitives;
  54         break;
  55
  56     case WINED3DPT_LINELIST:
  57         TRACE("LINES\n");
  58         *primType   = GL_LINES;
  59         NumVertexes = NumPrimitives * 2;
  60         break;
  61
  62     case WINED3DPT_LINESTRIP:
  63         TRACE("LINE_STRIP\n");
  64         *primType   = GL_LINE_STRIP;
  65         NumVertexes = NumPrimitives + 1;
  66         break;
  67
  68     case WINED3DPT_TRIANGLELIST:
  69         TRACE("TRIANGLES\n");
  70         *primType   = GL_TRIANGLES;
  71         NumVertexes = NumPrimitives * 3;
  72         break;
  73
  74     case WINED3DPT_TRIANGLESTRIP:
  75         TRACE("TRIANGLE_STRIP\n");
  76         *primType   = GL_TRIANGLE_STRIP;
  77         NumVertexes = NumPrimitives + 2;
  78         break;
  79
  80     case WINED3DPT_TRIANGLEFAN:
  81         TRACE("TRIANGLE_FAN\n");
  82         *primType   = GL_TRIANGLE_FAN;
  83         NumVertexes = NumPrimitives + 2;
  84         break;
  85
  86     default:
  87         FIXME("Unhandled primitive\n");
  88         *primType    = GL_POINTS;
  89         break;
  90     }
  91     return NumVertexes;
  92 }
  93
  94 static BOOL fixed_get_input(
  95     BYTE usage, BYTE usage_idx,
  96     unsigned int* regnum) {
  97
  98     *regnum = -1;
  99
 100     /* Those positions must have the order in the
 101      * named part of the strided data */
 102
 103     if ((usage == WINED3DDECLUSAGE_POSITION || usage == WINED3DDECLUSAGE_POSITIONT) && usage_idx == 0)
 104         *regnum = 0;
 105     else if (usage == WINED3DDECLUSAGE_BLENDWEIGHT && usage_idx == 0)
 106         *regnum = 1;
 107     else if (usage == WINED3DDECLUSAGE_BLENDINDICES && usage_idx == 0)
 108         *regnum = 2;
 109     else if (usage == WINED3DDECLUSAGE_NORMAL && usage_idx == 0)
 110         *regnum = 3;
 111     else if (usage == WINED3DDECLUSAGE_PSIZE && usage_idx == 0)
 112         *regnum = 4;
 113     else if (usage == WINED3DDECLUSAGE_COLOR && usage_idx == 0)
 114         *regnum = 5;
 115     else if (usage == WINED3DDECLUSAGE_COLOR && usage_idx == 1)
 116         *regnum = 6;
 117     else if (usage == WINED3DDECLUSAGE_TEXCOORD && usage_idx < WINED3DDP_MAXTEXCOORD)
 118         *regnum = 7 + usage_idx;
 119     else if ((usage == WINED3DDECLUSAGE_POSITION || usage == WINED3DDECLUSAGE_POSITIONT) && usage_idx == 1)
 120         *regnum = 7 + WINED3DDP_MAXTEXCOORD;
 121     else if (usage == WINED3DDECLUSAGE_NORMAL && usage_idx == 1)
 122         *regnum = 8 + WINED3DDP_MAXTEXCOORD;
 123     else if (usage == WINED3DDECLUSAGE_TANGENT && usage_idx == 0)
 124         *regnum = 9 + WINED3DDP_MAXTEXCOORD;
 125     else if (usage == WINED3DDECLUSAGE_BINORMAL && usage_idx == 0)
 126         *regnum = 10 + WINED3DDP_MAXTEXCOORD;
 127     else if (usage == WINED3DDECLUSAGE_TESSFACTOR && usage_idx == 0)
 128         *regnum = 11 + WINED3DDP_MAXTEXCOORD;
 129     else if (usage == WINED3DDECLUSAGE_FOG && usage_idx == 0)
 130         *regnum = 12 + WINED3DDP_MAXTEXCOORD;
 131     else if (usage == WINED3DDECLUSAGE_DEPTH && usage_idx == 0)
 132         *regnum = 13 + WINED3DDP_MAXTEXCOORD;
 133     else if (usage == WINED3DDECLUSAGE_SAMPLE && usage_idx == 0)
 134         *regnum = 14 + WINED3DDP_MAXTEXCOORD;
 135
 136     if (*regnum < 0) {
 137         FIXME("Unsupported input stream [usage=%s, usage_idx=%u]\n",
 138             debug_d3ddeclusage(usage), usage_idx);
 139         return FALSE;
 140     }
 141     return TRUE;
 142 }
 143
 144 void primitiveDeclarationConvertToStridedData(
 145      IWineD3DDevice *iface,
 146      BOOL useVertexShaderFunction,
 147      WineDirect3DVertexStridedData *strided,
 148      BOOL *fixup) {
 149
 150      /* We need to deal with frequency data!*/
 151
 152     BYTE  *data    = NULL;
 153     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 154     IWineD3DVertexDeclarationImpl* vertexDeclaration = (IWineD3DVertexDeclarationImpl *)This->stateBlock->vertexDecl;
 155     int i;
 156     WINED3DVERTEXELEMENT *element;
 157     DWORD stride;
 158     int reg;
 159     char isPreLoaded[MAX_STREAMS];
 160     DWORD preLoadStreams[MAX_STREAMS], numPreloadStreams = 0;
 161
 162     memset(isPreLoaded, 0, sizeof(isPreLoaded));
 163
 164     /* Check for transformed vertices, disable vertex shader if present */
 165     strided->u.s.position_transformed = FALSE;
 166     for (i = 0; i < vertexDeclaration->declarationWNumElements - 1; ++i) {
 167         element = vertexDeclaration->pDeclarationWine + i;
 168
 169         if (element->Usage == WINED3DDECLUSAGE_POSITIONT) {
 170             strided->u.s.position_transformed = TRUE;
 171             useVertexShaderFunction = FALSE;
 172         }
 173     }
 174
 175     /* Translate the declaration into strided data */
 176     for (i = 0 ; i < vertexDeclaration->declarationWNumElements - 1; ++i) {
 177         GLint streamVBO = 0;
 178         BOOL stride_used;
 179         unsigned int idx;
 180
 181         element = vertexDeclaration->pDeclarationWine + i;
 182         TRACE("%p Element %p (%d of %d)\n", vertexDeclaration->pDeclarationWine,
 183             element,  i + 1, vertexDeclaration->declarationWNumElements - 1);
 184
 185         if (This->stateBlock->streamSource[element->Stream] == NULL)
 186             continue;
 187
 188         if (This->stateBlock->streamIsUP) {
 189             TRACE("Stream is up %d, %p\n", element->Stream, This->stateBlock->streamSource[element->Stream]);
 190             streamVBO = 0;
 191             data    = (BYTE *)This->stateBlock->streamSource[element->Stream];
 192         } else {
 193             TRACE("Stream isn't up %d, %p\n", element->Stream, This->stateBlock->streamSource[element->Stream]);
 194             if(!isPreLoaded[element->Stream]) {
 195                 preLoadStreams[numPreloadStreams] = element->Stream;
 196                 numPreloadStreams++;
 197                 isPreLoaded[element->Stream] = 1;
 198             }
 199             data    = IWineD3DVertexBufferImpl_GetMemory(This->stateBlock->streamSource[element->Stream], 0, &streamVBO);
 200             if(fixup) {
 201                 if( streamVBO != 0) *fixup = TRUE;
 202                 else if(*fixup && !useVertexShaderFunction &&
 203                        (element->Usage == WINED3DDECLUSAGE_COLOR ||
 204                         element->Usage == WINED3DDECLUSAGE_POSITIONT)) {
 205                     /* This may be bad with the fixed function pipeline */
 206                     FIXME("Missing vbo streams with unfixed colors or transformed position, expect problems\n");
 207                 }
 208             }
 209         }
 210         stride  = This->stateBlock->streamStride[element->Stream];
 211         data += element->Offset;
 212         reg = element->Reg;
 213
 214         TRACE("Offset %d Stream %d UsageIndex %d\n", element->Offset, element->Stream, element->UsageIndex);
 215
 216         if (useVertexShaderFunction)
 217             stride_used = vshader_get_input(This->stateBlock->vertexShader,
 218                 element->Usage, element->UsageIndex, &idx);
 219         else
 220             stride_used = fixed_get_input(element->Usage, element->UsageIndex, &idx);
 221
 222         if (stride_used) {
 223             TRACE("Loaded %s array %u [usage=%s, usage_idx=%u, "
 224                     "stream=%u, offset=%u, stride=%u, VBO=%u]\n",
 225                     useVertexShaderFunction? "shader": "fixed function", idx,
 226                     debug_d3ddeclusage(element->Usage), element->UsageIndex,
 227                     element->Stream, element->Offset, stride, streamVBO);
 228
 229             strided->u.input[idx].lpData = data;
 230             strided->u.input[idx].dwType = element->Type;
 231             strided->u.input[idx].dwStride = stride;
 232             strided->u.input[idx].VBO = streamVBO;
 233             strided->u.input[idx].streamNo = element->Stream;
 234         }
 235     }
 236     /* Now call PreLoad on all the vertex buffers. In the very rare case
 237      * that the buffers stopps converting PreLoad will dirtify the VDECL again.
 238      * The vertex buffer can now use the strided structure in the device instead of finding its
 239      * own again.
 240      *
 241      * NULL streams won't be recorded in the array, UP streams won't be either. A stream is only
 242      * once in there.
 243      */
 244     for(i=0; i < numPreloadStreams; i++) {
 245         IWineD3DVertexBuffer_PreLoad(This->stateBlock->streamSource[preLoadStreams[i]]);
 246     }
 247 }
 248
 249 static void drawStridedFast(IWineD3DDevice *iface,UINT numberOfVertices, GLenum glPrimitiveType,
 250                      const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex) {
 251     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 252
 253     if (idxSize != 0 /* This crashes sometimes!*/) {
 254         TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 255         idxData = idxData == (void *)-1 ? NULL : idxData;
 256 #if 1
 257         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 258                      (const char *)idxData+(idxSize * startIdx));
 259 #else /* using drawRangeElements may be faster */
 260
 261         glDrawRangeElements(glPrimitiveType, minIndex, minIndex + numberOfVertices - 1, numberOfVertices,
 262                       idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 263                       (const char *)idxData+(idxSize * startIdx));
 264 #endif
 265         checkGLcall("glDrawRangeElements");
 266
 267     } else {
 268
 269         /* Note first is now zero as we shuffled along earlier */
 270         TRACE("(%p) : glDrawArrays(%x, 0, %d)\n", This, glPrimitiveType, numberOfVertices);
 271         glDrawArrays(glPrimitiveType, startVertex, numberOfVertices);
 272         checkGLcall("glDrawArrays");
 273
 274     }
 275
 276     return;
 277 }
 278
 279 /*
 280  * Actually draw using the supplied information.
 281  * Slower GL version which extracts info about each vertex in turn
 282  */
 283
 284 static void drawStridedSlow(IWineD3DDevice *iface, WineDirect3DVertexStridedData *sd,
 285                      UINT NumVertexes, GLenum glPrimType,
 286                      const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex) {
 287
 288     unsigned int               textureNo    = 0;
 289     const WORD                *pIdxBufS     = NULL;
 290     const DWORD               *pIdxBufL     = NULL;
 291     LONG                       vx_index;
 292     float x  = 0.0f, y  = 0.0f, z = 0.0f;  /* x,y,z coordinates          */
 293     float rhw = 0.0f;                      /* rhw                        */
 294     DWORD diffuseColor = 0xFFFFFFFF;       /* Diffuse Color              */
 295     DWORD specularColor = 0;               /* Specular Color             */
 296     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 297     UINT *streamOffset = This->stateBlock->streamOffset;
 298     DWORD                      SkipnStrides = startVertex + This->stateBlock->loadBaseVertexIndex;
 299
 300     BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
 301     BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
 302
 303     TRACE("Using slow vertex array code\n");
 304
 305     /* Variable Initialization */
 306     if (idxSize != 0) {
 307         /* Immediate mode drawing can't make use of indices in a vbo - get the data from the index buffer.
 308          * If the index buffer has no vbo(not supported or other reason), or with user pointer drawing
 309          * idxData will be != NULL
 310          */
 311         if(idxData == NULL) {
 312             idxData = ((IWineD3DIndexBufferImpl *) This->stateBlock->pIndexData)->resource.allocatedMemory;
 313         }
 314
 315         if (idxSize == 2) pIdxBufS = (const WORD *) idxData;
 316         else pIdxBufL = (const DWORD *) idxData;
 317     }
 318
 319     /* Adding the stream offset once is cheaper than doing it every iteration. Do not modify the strided data, it is a pointer
 320      * to the strided Data in the device and might be needed intact on the next draw
 321      */
 322     for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 323         if(sd->u.s.texCoords[textureNo].lpData) {
 324             texCoords[textureNo] = sd->u.s.texCoords[textureNo].lpData + streamOffset[sd->u.s.texCoords[textureNo].streamNo];
 325         } else {
 326             texCoords[textureNo] = NULL;
 327         }
 328     }
 329     if(sd->u.s.diffuse.lpData) {
 330         diffuse = sd->u.s.diffuse.lpData + streamOffset[sd->u.s.diffuse.streamNo];
 331     }
 332     if(sd->u.s.specular.lpData) {
 333         specular = sd->u.s.specular.lpData + streamOffset[sd->u.s.specular.streamNo];
 334     }
 335     if(sd->u.s.normal.lpData) {
 336         normal = sd->u.s.normal.lpData + streamOffset[sd->u.s.normal.streamNo];
 337     }
 338     if(sd->u.s.position.lpData) {
 339         position = sd->u.s.position.lpData + streamOffset[sd->u.s.position.streamNo];
 340     }
 341
 342     /* Start drawing in GL */
 343     VTRACE(("glBegin(%x)\n", glPrimType));
 344     glBegin(glPrimType);
 345
 346     /* Default settings for data that is not passed */
 347     if (sd->u.s.normal.lpData == NULL) {
 348         glNormal3f(0, 0, 1);
 349     }
 350     if(sd->u.s.diffuse.lpData == NULL) {
 351         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 352     }
 353     if(sd->u.s.specular.lpData == NULL) {
 354         if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 355             GL_EXTCALL(glSecondaryColor3fEXT)(0, 0, 0);
 356         }
 357     }
 358
 359     /* We shouldn't start this function if any VBO is involved. Should I put a safety check here?
 360      * Guess it's not necessary(we crash then anyway) and would only eat CPU time
 361      */
 362
 363     /* For each primitive */
 364     for (vx_index = 0; vx_index < NumVertexes; ++vx_index) {
 365
 366         /* Initialize diffuse color */
 367         diffuseColor = 0xFFFFFFFF;
 368
 369         /* Blending data and Point sizes are not supported by this function. They are not supported by the fixed
 370          * function pipeline at all. A Fixme for them is printed after decoding the vertex declaration
 371          */
 372
 373         /* For indexed data, we need to go a few more strides in */
 374         if (idxData != NULL) {
 375
 376             /* Indexed so work out the number of strides to skip */
 377             if (idxSize == 2) {
 378                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufS[startIdx+vx_index]));
 379                 SkipnStrides = pIdxBufS[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 380             } else {
 381                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufL[startIdx+vx_index]));
 382                 SkipnStrides = pIdxBufL[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 383             }
 384         }
 385
 386         /* Texture coords --------------------------- */
 387         for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 388
 389             if (!GL_SUPPORT(ARB_MULTITEXTURE) && textureNo > 0) {
 390                 FIXME("Program using multiple concurrent textures which this opengl implementation doesn't support\n");
 391                 continue ;
 392             }
 393
 394             /* Query tex coords */
 395             if (This->stateBlock->textures[textureNo] != NULL) {
 396
 397                 int    coordIdx = This->stateBlock->textureState[textureNo][WINED3DTSS_TEXCOORDINDEX];
 398                 float *ptrToCoords = NULL;
 399                 float  s = 0.0, t = 0.0, r = 0.0, q = 0.0;
 400
 401                 if (coordIdx > 7) {
 402                     VTRACE(("tex: %d - Skip tex coords, as being system generated\n", textureNo));
 403                     continue;
 404                 } else if (coordIdx < 0) {
 405                     FIXME("tex: %d - Coord index %d is less than zero, expect a crash.\n", textureNo, coordIdx);
 406                     continue;
 407                 }
 408
 409                 ptrToCoords = (float *)(texCoords[coordIdx] + (SkipnStrides * sd->u.s.texCoords[coordIdx].dwStride));
 410                 if (texCoords[coordIdx] == NULL) {
 411                     TRACE("tex: %d - Skipping tex coords, as no data supplied\n", textureNo);
 412                     continue;
 413                 } else {
 414                     int texture_idx = This->texUnitMap[textureNo];
 415                     int coordsToUse = sd->u.s.texCoords[coordIdx].dwType + 1; /* 0 == WINED3DDECLTYPE_FLOAT1 etc */
 416
 417                     if (texture_idx == -1) continue;
 418
 419                     /* The coords to supply depend completely on the fvf / vertex shader */
 420                     switch (coordsToUse) {
 421                     case 4: q = ptrToCoords[3]; /* drop through */
 422                     case 3: r = ptrToCoords[2]; /* drop through */
 423                     case 2: t = ptrToCoords[1]; /* drop through */
 424                     case 1: s = ptrToCoords[0];
 425                     }
 426
 427                     /* Projected is more 'fun' - Move the last coord to the 'q'
 428                           parameter (see comments under WINED3DTSS_TEXTURETRANSFORMFLAGS */
 429                     if ((This->stateBlock->textureState[textureNo][WINED3DTSS_TEXTURETRANSFORMFLAGS] != WINED3DTTFF_DISABLE) &&
 430                         (This->stateBlock->textureState[textureNo][WINED3DTSS_TEXTURETRANSFORMFLAGS] & WINED3DTTFF_PROJECTED)) {
 431
 432                         if (This->stateBlock->textureState[textureNo][WINED3DTSS_TEXTURETRANSFORMFLAGS] & WINED3DTTFF_PROJECTED) {
 433                             switch (coordsToUse) {
 434                             case 0:  /* Drop Through */
 435                             case 1:
 436                                 FIXME("WINED3DTTFF_PROJECTED but only zero or one coordinate?\n");
 437                                 break;
 438                             case 2:
 439                                 q = t;
 440                                 t = 0.0;
 441                                 coordsToUse = 4;
 442                                 break;
 443                             case 3:
 444                                 q = r;
 445                                 r = 0.0;
 446                                 coordsToUse = 4;
 447                                 break;
 448                             case 4:  /* Nop here */
 449                                 break;
 450                             default:
 451                                 FIXME("Unexpected WINED3DTSS_TEXTURETRANSFORMFLAGS value of %d\n",
 452                                       This->stateBlock->textureState[textureNo][WINED3DTSS_TEXTURETRANSFORMFLAGS] & WINED3DTTFF_PROJECTED);
 453                             }
 454                         }
 455                     }
 456
 457                     switch (coordsToUse) {   /* Supply the provided texture coords */
 458                     case WINED3DTTFF_COUNT1:
 459                         VTRACE(("tex:%d, s=%f\n", textureNo, s));
 460                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 461                             GL_EXTCALL(glMultiTexCoord1fARB(texture_idx, s));
 462                         } else {
 463                             glTexCoord1f(s);
 464                         }
 465                         break;
 466                     case WINED3DTTFF_COUNT2:
 467                         VTRACE(("tex:%d, s=%f, t=%f\n", textureNo, s, t));
 468                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 469                             GL_EXTCALL(glMultiTexCoord2fARB(texture_idx, s, t));
 470                         } else {
 471                             glTexCoord2f(s, t);
 472                         }
 473                         break;
 474                     case WINED3DTTFF_COUNT3:
 475                         VTRACE(("tex:%d, s=%f, t=%f, r=%f\n", textureNo, s, t, r));
 476                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 477                             GL_EXTCALL(glMultiTexCoord3fARB(texture_idx, s, t, r));
 478                         } else {
 479                             glTexCoord3f(s, t, r);
 480                         }
 481                         break;
 482                     case WINED3DTTFF_COUNT4:
 483                         VTRACE(("tex:%d, s=%f, t=%f, r=%f, q=%f\n", textureNo, s, t, r, q));
 484                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 485                             GL_EXTCALL(glMultiTexCoord4fARB(texture_idx, s, t, r, q));
 486                         } else {
 487                             glTexCoord4f(s, t, r, q);
 488                         }
 489                         break;
 490                     default:
 491                         FIXME("Should not get here as coordsToUse is two bits only (%x)!\n", coordsToUse);
 492                     }
 493                 }
 494             }
 495         } /* End of textures */
 496
 497         /* Diffuse -------------------------------- */
 498         if (diffuse) {
 499             DWORD *ptrToCoords = (DWORD *)(diffuse + (SkipnStrides * sd->u.s.diffuse.dwStride));
 500             diffuseColor = ptrToCoords[0];
 501             VTRACE(("diffuseColor=%lx\n", diffuseColor));
 502
 503             glColor4ub(D3DCOLOR_B_R(diffuseColor),
 504                      D3DCOLOR_B_G(diffuseColor),
 505                      D3DCOLOR_B_B(diffuseColor),
 506                      D3DCOLOR_B_A(diffuseColor));
 507             VTRACE(("glColor4ub: r,g,b,a=%lu,%lu,%lu,%lu\n",
 508                     D3DCOLOR_B_R(diffuseColor),
 509                     D3DCOLOR_B_G(diffuseColor),
 510                     D3DCOLOR_B_B(diffuseColor),
 511                     D3DCOLOR_B_A(diffuseColor)));
 512
 513             if(This->activeContext->num_untracked_materials) {
 514                 unsigned char i;
 515                 float color[4];
 516                 color[0] = D3DCOLOR_B_R(diffuseColor) / 255.0;
 517                 color[1] = D3DCOLOR_B_G(diffuseColor) / 255.0;
 518                 color[2] = D3DCOLOR_B_B(diffuseColor) / 255.0;
 519                 color[3] = D3DCOLOR_B_A(diffuseColor) / 255.0;
 520
 521                 for(i = 0; i < This->activeContext->num_untracked_materials; i++) {
 522                     glMaterialfv(GL_FRONT_AND_BACK, This->activeContext->untracked_materials[i], color);
 523                 }
 524             }
 525         }
 526
 527         /* Specular ------------------------------- */
 528         if (specular) {
 529             DWORD *ptrToCoords = (DWORD *)(specular + (SkipnStrides * sd->u.s.specular.dwStride));
 530             specularColor = ptrToCoords[0];
 531             VTRACE(("specularColor=%lx\n", specularColor));
 532
 533             /* special case where the fog density is stored in the specular alpha channel */
 534             if(This->stateBlock->renderState[WINED3DRS_FOGENABLE] &&
 535               (This->stateBlock->renderState[WINED3DRS_FOGVERTEXMODE] == WINED3DFOG_NONE || sd->u.s.position.dwType == WINED3DDECLTYPE_FLOAT4 )&&
 536               This->stateBlock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE) {
 537                 if(GL_SUPPORT(EXT_FOG_COORD)) {
 538                     GL_EXTCALL(glFogCoordfEXT(specularColor >> 24));
 539                 } else {
 540                     static BOOL warned = FALSE;
 541                     if(!warned) {
 542                         /* TODO: Use the fog table code from old ddraw */
 543                         FIXME("Implement fog for transformed vertices in software\n");
 544                         warned = TRUE;
 545                     }
 546                 }
 547             }
 548
 549             VTRACE(("glSecondaryColor4ub: r,g,b=%lu,%lu,%lu\n",
 550                     D3DCOLOR_B_R(specularColor),
 551                     D3DCOLOR_B_G(specularColor),
 552                     D3DCOLOR_B_B(specularColor)));
 553             if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 554                 GL_EXTCALL(glSecondaryColor3ubEXT)(
 555                            D3DCOLOR_B_R(specularColor),
 556                            D3DCOLOR_B_G(specularColor),
 557                            D3DCOLOR_B_B(specularColor));
 558             } else {
 559                 /* Do not worry if specular colour missing and disable request */
 560                 VTRACE(("Specular color extensions not supplied\n"));
 561             }
 562         }
 563
 564         /* Normal -------------------------------- */
 565         if (normal != NULL) {
 566             float *ptrToCoords = (float *)(normal + (SkipnStrides * sd->u.s.normal.dwStride));
 567
 568             VTRACE(("glNormal:nx,ny,nz=%f,%f,%f\n", ptrToCoords[0], ptrToCoords[1], ptrToCoords[2]));
 569             glNormal3f(ptrToCoords[0], ptrToCoords[1], ptrToCoords[2]);
 570         }
 571
 572         /* Position -------------------------------- */
 573         if (position) {
 574             float *ptrToCoords = (float *)(position + (SkipnStrides * sd->u.s.position.dwStride));
 575             x = ptrToCoords[0];
 576             y = ptrToCoords[1];
 577             z = ptrToCoords[2];
 578             rhw = 1.0;
 579             VTRACE(("x,y,z=%f,%f,%f\n", x,y,z));
 580
 581             /* RHW follows, only if transformed, ie 4 floats were provided */
 582             if (sd->u.s.position_transformed) {
 583                 rhw = ptrToCoords[3];
 584                 VTRACE(("rhw=%f\n", rhw));
 585             }
 586
 587             if (1.0f == rhw || ((rhw < eps) && (rhw > -eps))) {
 588                 VTRACE(("Vertex: glVertex:x,y,z=%f,%f,%f\n", x,y,z));
 589                 glVertex3f(x, y, z);
 590             } else {
 591                 GLfloat w = 1.0 / rhw;
 592                 VTRACE(("Vertex: glVertex:x,y,z=%f,%f,%f / rhw=%f\n", x,y,z,rhw));
 593                 glVertex4f(x*w, y*w, z*w, w);
 594             }
 595         }
 596
 597         /* For non indexed mode, step onto next parts */
 598         if (idxData == NULL) {
 599             ++SkipnStrides;
 600         }
 601     }
 602
 603     glEnd();
 604     checkGLcall("glEnd and previous calls");
 605 }
 606
 607 static void depth_blt(IWineD3DDevice *iface, GLuint texture) {
 608     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 609     GLint old_binding = 0;
 610
 611     glPushAttrib(GL_ENABLE_BIT | GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
 612
 613     glDisable(GL_CULL_FACE);
 614     glEnable(GL_BLEND);
 615     glDisable(GL_ALPHA_TEST);
 616     glDisable(GL_SCISSOR_TEST);
 617     glDisable(GL_STENCIL_TEST);
 618     glEnable(GL_DEPTH_TEST);
 619     glDepthFunc(GL_ALWAYS);
 620     glBlendFunc(GL_ZERO, GL_ONE);
 621
 622     GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
 623     glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
 624     glBindTexture(GL_TEXTURE_2D, texture);
 625     glEnable(GL_TEXTURE_2D);
 626
 627     This->shader_backend->shader_select_depth_blt(iface);
 628
 629     glBegin(GL_TRIANGLE_STRIP);
 630     glVertex2f(-1.0f, -1.0f);
 631     glVertex2f(1.0f, -1.0f);
 632     glVertex2f(-1.0f, 1.0f);
 633     glVertex2f(1.0f, 1.0f);
 634     glEnd();
 635
 636     glBindTexture(GL_TEXTURE_2D, old_binding);
 637
 638     glPopAttrib();
 639
 640     /* Reselect the old shaders. There doesn't seem to be any glPushAttrib bit for arb shaders,
 641      * and this seems easier and more efficient than providing the shader backend with a private
 642      * storage to read and restore the old shader settings
 643      */
 644     This->shader_backend->shader_select(iface, use_ps(This), use_vs(This));
 645 }
 646
 647 static void depth_copy(IWineD3DDevice *iface) {
 648     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 649     IWineD3DSurfaceImpl *depth_stencil = (IWineD3DSurfaceImpl *)This->depthStencilBuffer;
 650
 651     /* Only copy the depth buffer if there is one. */
 652     if (!depth_stencil) return;
 653
 654     /* TODO: Make this work for modes other than FBO */
 655     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) return;
 656
 657     if (depth_stencil->current_renderbuffer) {
 658         FIXME("Not supported with fixed up depth stencil\n");
 659         return;
 660     }
 661
 662     if (This->render_offscreen) {
 663         static GLuint tmp_texture = 0;
 664         GLint old_binding = 0;
 665
 666         TRACE("Copying onscreen depth buffer to offscreen surface\n");
 667
 668         if (!tmp_texture) {
 669             glGenTextures(1, &tmp_texture);
 670         }
 671
 672         /* Note that we use depth_blt here as well, rather than glCopyTexImage2D
 673          * directly on the FBO texture. That's because we need to flip. */
 674         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
 675         glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
 676         glBindTexture(GL_TEXTURE_2D, tmp_texture);
 677         glCopyTexImage2D(depth_stencil->glDescription.target,
 678                 depth_stencil->glDescription.level,
 679                 depth_stencil->glDescription.glFormatInternal,
 680                 0,
 681                 0,
 682                 depth_stencil->currentDesc.Width,
 683                 depth_stencil->currentDesc.Height,
 684                 0);
 685         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 686         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 687         glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);
 688         glBindTexture(GL_TEXTURE_2D, old_binding);
 689
 690         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, This->fbo));
 691         checkGLcall("glBindFramebuffer()");
 692         depth_blt(iface, tmp_texture);
 693         checkGLcall("depth_blt");
 694     } else {
 695         TRACE("Copying offscreen surface to onscreen depth buffer\n");
 696
 697         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
 698         checkGLcall("glBindFramebuffer()");
 699         depth_blt(iface, depth_stencil->glDescription.textureName);
 700         checkGLcall("depth_blt");
 701     }
 702 }
 703
 704 static inline void drawStridedInstanced(IWineD3DDevice *iface, WineDirect3DVertexStridedData *sd, UINT numberOfVertices,
 705                                  GLenum glPrimitiveType, const void *idxData, short idxSize, ULONG minIndex,
 706                                  ULONG startIdx, ULONG startVertex) {
 707     UINT numInstances = 0;
 708     int numInstancedAttribs = 0, i, j;
 709     UINT instancedData[sizeof(sd->u.input) / sizeof(sd->u.input[0]) /* 16 */];
 710     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *) iface;
 711     IWineD3DStateBlockImpl *stateblock = This->stateBlock;
 712
 713     if (idxSize == 0) {
 714         /* This is a nasty thing. MSDN says no hardware supports that and apps have to use software vertex processing.
 715          * We don't support this for now
 716          *
 717          * Shouldn't be too hard to support with opengl, in theory just call glDrawArrays instead of drawElements.
 718          * But the StreamSourceFreq value has a different meaning in that situation.
 719          */
 720         FIXME("Non-indexed instanced drawing is not supported\n");
 721         return;
 722     }
 723
 724     TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 725     idxData = idxData == (void *)-1 ? NULL : idxData;
 726
 727     /* First, figure out how many instances we have to draw */
 728     for(i = 0; i < MAX_STREAMS; i++) {
 729         /* Look at all non-instanced streams */
 730         if(!(stateblock->streamFlags[i] & WINED3DSTREAMSOURCE_INSTANCEDATA) &&
 731            stateblock->streamSource[i]) {
 732             int inst = stateblock->streamFreq[i];
 733
 734             if(numInstances && inst != numInstances) {
 735                 ERR("Two streams specify a different number of instances. Got %d, new is %d\n", numInstances, inst);
 736             }
 737             numInstances = inst;
 738         }
 739     }
 740
 741     for(i = 0; i < sizeof(sd->u.input) / sizeof(sd->u.input[0]); i++) {
 742         if(stateblock->streamFlags[sd->u.input[i].streamNo] & WINED3DSTREAMSOURCE_INSTANCEDATA) {
 743             instancedData[numInstancedAttribs] = i;
 744             numInstancedAttribs++;
 745         }
 746     }
 747
 748     /* now draw numInstances instances :-) */
 749     for(i = 0; i < numInstances; i++) {
 750         /* Specify the instanced attributes using immediate mode calls */
 751         for(j = 0; j < numInstancedAttribs; j++) {
 752             BYTE *ptr = sd->u.input[instancedData[j]].lpData +
 753                         sd->u.input[instancedData[j]].dwStride * i +
 754                         stateblock->streamOffset[sd->u.input[instancedData[j]].streamNo];
 755             if(sd->u.input[instancedData[j]].VBO) {
 756                 IWineD3DVertexBufferImpl *vb = (IWineD3DVertexBufferImpl *) stateblock->streamSource[sd->u.input[instancedData[j]].streamNo];
 757                 ptr += (long) vb->resource.allocatedMemory;
 758             }
 759
 760             switch(sd->u.input[instancedData[j]].dwType) {
 761                 case WINED3DDECLTYPE_FLOAT1:
 762                     GL_EXTCALL(glVertexAttrib1fvARB(instancedData[j], (float *) ptr));
 763                     break;
 764                 case WINED3DDECLTYPE_FLOAT2:
 765                     GL_EXTCALL(glVertexAttrib2fvARB(instancedData[j], (float *) ptr));
 766                     break;
 767                 case WINED3DDECLTYPE_FLOAT3:
 768                     GL_EXTCALL(glVertexAttrib3fvARB(instancedData[j], (float *) ptr));
 769                     break;
 770                 case WINED3DDECLTYPE_FLOAT4:
 771                     GL_EXTCALL(glVertexAttrib4fvARB(instancedData[j], (float *) ptr));
 772                     break;
 773
 774                 case WINED3DDECLTYPE_UBYTE4:
 775                     GL_EXTCALL(glVertexAttrib4NubvARB(instancedData[j], ptr));
 776                     break;
 777                 case WINED3DDECLTYPE_UBYTE4N:
 778                 case WINED3DDECLTYPE_D3DCOLOR:
 779                     GL_EXTCALL(glVertexAttrib4NubvARB(instancedData[j], ptr));
 780                     break;
 781
 782                 case WINED3DDECLTYPE_SHORT2:
 783                     GL_EXTCALL(glVertexAttrib4svARB(instancedData[j], (GLshort *) ptr));
 784                     break;
 785                 case WINED3DDECLTYPE_SHORT4:
 786                     GL_EXTCALL(glVertexAttrib4svARB(instancedData[j], (GLshort *) ptr));
 787                     break;
 788
 789                 case WINED3DDECLTYPE_SHORT2N:
 790                 {
 791                     GLshort s[4] = {((short *) ptr)[0], ((short *) ptr)[1], 0, 1};
 792                     GL_EXTCALL(glVertexAttrib4NsvARB(instancedData[j], s));
 793                     break;
 794                 }
 795                 case WINED3DDECLTYPE_USHORT2N:
 796                 {
 797                     GLushort s[4] = {((unsigned short *) ptr)[0], ((unsigned short *) ptr)[1], 0, 1};
 798                     GL_EXTCALL(glVertexAttrib4NusvARB(instancedData[j], s));
 799                     break;
 800                 }
 801                 case WINED3DDECLTYPE_SHORT4N:
 802                     GL_EXTCALL(glVertexAttrib4NsvARB(instancedData[j], (GLshort *) ptr));
 803                     break;
 804                 case WINED3DDECLTYPE_USHORT4N:
 805                     GL_EXTCALL(glVertexAttrib4NusvARB(instancedData[j], (GLushort *) ptr));
 806                     break;
 807
 808                 case WINED3DDECLTYPE_UDEC3:
 809                     FIXME("Unsure about WINED3DDECLTYPE_UDEC3\n");
 810                     /*glVertexAttrib3usvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 811                     break;
 812                 case WINED3DDECLTYPE_DEC3N:
 813                     FIXME("Unsure about WINED3DDECLTYPE_DEC3N\n");
 814                     /*glVertexAttrib3NusvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 815                     break;
 816
 817                 case WINED3DDECLTYPE_FLOAT16_2:
 818                     /* Are those 16 bit floats. C doesn't have a 16 bit float type. I could read the single bits and calculate a 4
 819                      * byte float according to the IEEE standard
 820                      */
 821                     FIXME("Unsupported WINED3DDECLTYPE_FLOAT16_2\n");
 822                     break;
 823                 case WINED3DDECLTYPE_FLOAT16_4:
 824                     FIXME("Unsupported WINED3DDECLTYPE_FLOAT16_4\n");
 825                     break;
 826
 827                 case WINED3DDECLTYPE_UNUSED:
 828                 default:
 829                     ERR("Unexpected declaration in instanced attributes\n");
 830                     break;
 831             }
 832         }
 833
 834         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 835                     (const char *)idxData+(idxSize * startIdx));
 836         checkGLcall("glDrawElements");
 837     }
 838 }
 839
 840 struct coords {
 841     int x, y, z;
 842 };
 843
 844 void blt_to_drawable(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *surface) {
 845     struct coords coords[4];
 846     int low_coord;
 847
 848     /* TODO: This could be supported for lazy unlocking */
 849     if(!(surface->Flags & SFLAG_INTEXTURE)) {
 850         /* It is ok at init to be nowhere */
 851         if(!(surface->Flags & SFLAG_INSYSMEM)) {
 852             ERR("Blitting surfaces from sysmem not supported yet\n");
 853         }
 854         return;
 855     }
 856
 857     ENTER_GL();
 858     ActivateContext(This, This->render_targets[0], CTXUSAGE_BLIT);
 859
 860     if(surface->glDescription.target == GL_TEXTURE_2D) {
 861         glBindTexture(GL_TEXTURE_2D, surface->glDescription.textureName);
 862         checkGLcall("GL_TEXTURE_2D, This->glDescription.textureName)");
 863
 864         coords[0].x = 0;    coords[0].y = 0;    coords[0].z = 0;
 865         coords[1].x = 0;    coords[1].y = 1;    coords[1].z = 0;
 866         coords[2].x = 1;    coords[2].y = 1;    coords[2].z = 0;
 867         coords[3].x = 1;    coords[3].y = 0;    coords[3].z = 0;
 868
 869         low_coord = 0;
 870     } else {
 871         /* Must be a cube map */
 872         glDisable(GL_TEXTURE_2D);
 873         checkGLcall("glDisable(GL_TEXTURE_2D)");
 874         glEnable(GL_TEXTURE_CUBE_MAP_ARB);
 875         checkGLcall("glEnable(surface->glDescription.target)");
 876         glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, surface->glDescription.textureName);
 877         checkGLcall("GL_TEXTURE_CUBE_MAP_ARB, This->glDescription.textureName)");
 878
 879         switch(surface->glDescription.target) {
 880             case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
 881                 coords[0].x =  1;   coords[0].y = -1;   coords[0].z =  1;
 882                 coords[1].x =  1;   coords[1].y =  1;   coords[1].z =  1;
 883                 coords[2].x =  1;   coords[2].y =  1;   coords[2].z = -1;
 884                 coords[3].x =  1;   coords[3].y = -1;   coords[3].z = -1;
 885                 break;
 886
 887             case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
 888                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 889                 coords[1].x = -1;   coords[1].y =  1;   coords[1].z =  1;
 890                 coords[2].x = -1;   coords[2].y =  1;   coords[2].z = -1;
 891                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 892                 break;
 893
 894             case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
 895                 coords[0].x = -1;   coords[0].y =  1;   coords[0].z =  1;
 896                 coords[1].x =  1;   coords[1].y =  1;   coords[1].z =  1;
 897                 coords[2].x =  1;   coords[2].y =  1;   coords[2].z = -1;
 898                 coords[3].x = -1;   coords[3].y =  1;   coords[3].z = -1;
 899                 break;
 900
 901             case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
 902                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 903                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z =  1;
 904                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z = -1;
 905                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 906                 break;
 907
 908             case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
 909                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 910                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z =  1;
 911                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z =  1;
 912                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z =  1;
 913                 break;
 914
 915             case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
 916                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z = -1;
 917                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z = -1;
 918                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z = -1;
 919                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 920
 921             default:
 922                 ERR("Unexpected texture target\n");
 923                 LEAVE_GL();
 924                 return;
 925         }
 926
 927         low_coord = -1;
 928     }
 929
 930     if(This->render_offscreen) {
 931         coords[0].y = coords[0].y == 1 ? low_coord : 1;
 932         coords[1].y = coords[1].y == 1 ? low_coord : 1;
 933         coords[2].y = coords[2].y == 1 ? low_coord : 1;
 934         coords[3].y = coords[3].y == 1 ? low_coord : 1;
 935     }
 936
 937     glBegin(GL_QUADS);
 938         glTexCoord3iv((GLint *) &coords[0]);
 939         glVertex2i(0, 0);
 940
 941         glTexCoord3iv((GLint *) &coords[1]);
 942         glVertex2i(0, surface->pow2Height);
 943
 944         glTexCoord3iv((GLint *) &coords[2]);
 945         glVertex2i(surface->pow2Width, surface->pow2Height);
 946
 947         glTexCoord3iv((GLint *) &coords[3]);
 948         glVertex2i(surface->pow2Width, 0);
 949     glEnd();
 950     checkGLcall("glEnd");
 951
 952     if(surface->glDescription.target != GL_TEXTURE_2D) {
 953         glEnable(GL_TEXTURE_2D);
 954         checkGLcall("glEnable(GL_TEXTURE_2D)");
 955         glDisable(GL_TEXTURE_CUBE_MAP_ARB);
 956         checkGLcall("glDisable(GL_TEXTURE_CUBE_MAP_ARB)");
 957     }
 958     LEAVE_GL();
 959 }
 960
 961 /* Routine common to the draw primitive and draw indexed primitive routines */
 962 void drawPrimitive(IWineD3DDevice *iface,
 963                    int PrimitiveType,
 964                    long NumPrimitives,
 965                    /* for Indexed: */
 966                    long  StartVertexIndex,
 967                    UINT  numberOfVertices,
 968                    long  StartIdx,
 969                    short idxSize,
 970                    const void *idxData,
 971                    int   minIndex) {
 972
 973     IWineD3DDeviceImpl           *This = (IWineD3DDeviceImpl *)iface;
 974     IWineD3DSwapChain            *swapchain;
 975     IWineD3DBaseTexture          *texture = NULL;
 976     IWineD3DSurfaceImpl          *target;
 977     int i;
 978
 979     /* Signals other modules that a drawing is in progress and the stateblock finalized */
 980     This->isInDraw = TRUE;
 981
 982     /* Invalidate the back buffer memory so LockRect will read it the next time */
 983     for(i = 0; i < GL_LIMITS(buffers); i++) {
 984         target = (IWineD3DSurfaceImpl *) This->render_targets[i];
 985
 986         /* TODO: Only do all that if we're going to change anything
 987          * Texture container dirtification does not work quite right yet
 988          */
 989         if(target /*&& target->Flags & (SFLAG_INTEXTURE | SFLAG_INSYSMEM)*/) {
 990             swapchain = NULL;
 991             texture = NULL;
 992
 993             if(i == 0) {
 994                 IWineD3DSurface_GetContainer((IWineD3DSurface *) target, &IID_IWineD3DSwapChain, (void **)&swapchain);
 995
 996                 /* Need the surface in the drawable! */
 997                 if(!(target->Flags & SFLAG_INDRAWABLE) && (swapchain || wined3d_settings.offscreen_rendering_mode != ORM_FBO)) {
 998                     blt_to_drawable(This, target);
 999                 }
1000
1001                 if(swapchain) {
1002                     /* Onscreen target. Invalidate system memory copy and texture copy */
1003                     target->Flags &= ~(SFLAG_INSYSMEM | SFLAG_INTEXTURE);
1004                     target->Flags |= SFLAG_INDRAWABLE;
1005                     IWineD3DSwapChain_Release(swapchain);
1006                 } else if(wined3d_settings.offscreen_rendering_mode != ORM_FBO) {
1007                     /* Non-FBO target: Invalidate system copy, texture copy and dirtify the container */
1008                     IWineD3DSurface_GetContainer((IWineD3DSurface *) target, &IID_IWineD3DBaseTexture, (void **)&texture);
1009
1010                     if(texture) {
1011                         IWineD3DBaseTexture_SetDirty(texture, TRUE);
1012                         IWineD3DTexture_Release(texture);
1013                     }
1014
1015                     target->Flags &= ~(SFLAG_INSYSMEM | SFLAG_INTEXTURE);
1016                     target->Flags |= SFLAG_INDRAWABLE;
1017                 } else {
1018                     /* FBO offscreen target. Invalidate system memory copy */
1019                     target->Flags &= ~SFLAG_INSYSMEM;
1020                 }
1021             } else {
1022                 /* Must be an fbo render target */
1023                 target->Flags &= ~SFLAG_INSYSMEM;
1024                 target->Flags |=  SFLAG_INTEXTURE;
1025             }
1026         }
1027     }
1028
1029     /* Ok, we will be updating the screen from here onwards so grab the lock */
1030     ENTER_GL();
1031
1032     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO) {
1033         apply_fbo_state(iface);
1034     }
1035
1036     ActivateContext(This, This->render_targets[0], CTXUSAGE_DRAWPRIM);
1037
1038     if (This->depth_copy_state == WINED3D_DCS_COPY) {
1039         depth_copy(iface);
1040     }
1041     This->depth_copy_state = WINED3D_DCS_INITIAL;
1042
1043     {
1044         GLenum glPrimType;
1045         BOOL emulation = FALSE;
1046         WineDirect3DVertexStridedData *strided = &This->strided_streams;
1047         WineDirect3DVertexStridedData stridedlcl;
1048         /* Ok, Work out which primitive is requested and how many vertexes that
1049            will be                                                              */
1050         UINT calculatedNumberOfindices = primitiveToGl(PrimitiveType, NumPrimitives, &glPrimType);
1051         if (numberOfVertices == 0 )
1052             numberOfVertices = calculatedNumberOfindices;
1053
1054         if(!This->strided_streams.u.s.position_transformed && !use_vs(This)) {
1055             if(This->activeContext->num_untracked_materials &&
1056                This->stateBlock->renderState[WINED3DRS_LIGHTING]) {
1057                 IWineD3DVertexBufferImpl *vb;
1058
1059                 FIXME("Using software emulation because not all material properties could be tracked\n");
1060                 emulation = TRUE;
1061
1062                 strided = &stridedlcl;
1063                 memcpy(&stridedlcl, &This->strided_streams, sizeof(stridedlcl));
1064
1065 #define FIXVBO(type) \
1066 if(stridedlcl.u.s.type.VBO) { \
1067     vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[stridedlcl.u.s.type.streamNo]; \
1068     stridedlcl.u.s.type.VBO = 0; \
1069     stridedlcl.u.s.type.lpData = (BYTE *) ((unsigned long) stridedlcl.u.s.type.lpData + (unsigned long) vb->resource.allocatedMemory); \
1070 }
1071                 FIXVBO(position);
1072                 FIXVBO(blendWeights);
1073                 FIXVBO(blendMatrixIndices);
1074                 FIXVBO(normal);
1075                 FIXVBO(pSize);
1076                 FIXVBO(diffuse);
1077                 FIXVBO(specular);
1078                 for(i = 0; i < WINED3DDP_MAXTEXCOORD; i++) FIXVBO(texCoords[i]);
1079                 FIXVBO(position2);
1080                 FIXVBO(normal2);
1081                 FIXVBO(tangent);
1082                 FIXVBO(binormal);
1083                 FIXVBO(tessFactor);
1084                 FIXVBO(fog);
1085                 FIXVBO(depth);
1086                 FIXVBO(sample);
1087 #undef FIXVBO
1088             }
1089         }
1090
1091         if (This->useDrawStridedSlow || emulation) {
1092             /* Immediate mode drawing */
1093             drawStridedSlow(iface, strided, calculatedNumberOfindices,
1094                             glPrimType, idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1095         } else if(This->instancedDraw) {
1096             /* Instancing emulation with mixing immediate mode and arrays */
1097             drawStridedInstanced(iface, &This->strided_streams, calculatedNumberOfindices, glPrimType,
1098                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1099         } else {
1100             /* Simple array draw call */
1101             drawStridedFast(iface, calculatedNumberOfindices, glPrimType,
1102                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1103         }
1104     }
1105
1106     /* Finshed updating the screen, restore lock */
1107     LEAVE_GL();
1108     TRACE("Done all gl drawing\n");
1109
1110     /* Diagnostics */
1111 #ifdef SHOW_FRAME_MAKEUP
1112     {
1113         static long int primCounter = 0;
1114         /* NOTE: set primCounter to the value reported by drawprim
1115            before you want to to write frame makeup to /tmp */
1116         if (primCounter >= 0) {
1117             WINED3DLOCKED_RECT r;
1118             char buffer[80];
1119             IWineD3DSurface_LockRect(This->renderTarget, &r, NULL, WINED3DLOCK_READONLY);
1120             sprintf(buffer, "/tmp/backbuffer_%d.tga", primCounter);
1121             TRACE("Saving screenshot %s\n", buffer);
1122             IWineD3DSurface_SaveSnapshot(This->renderTarget, buffer);
1123             IWineD3DSurface_UnlockRect(This->renderTarget);
1124
1125 #ifdef SHOW_TEXTURE_MAKEUP
1126            {
1127             IWineD3DSurface *pSur;
1128             int textureNo;
1129             for (textureNo = 0; textureNo < MAX_COMBINED_SAMPLERS; ++textureNo) {
1130                 if (This->stateBlock->textures[textureNo] != NULL) {
1131                     sprintf(buffer, "/tmp/texture_%p_%d_%d.tga", This->stateBlock->textures[textureNo], primCounter, textureNo);
1132                     TRACE("Saving texture %s\n", buffer);
1133                     if (IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]) == WINED3DRTYPE_TEXTURE) {
1134                             IWineD3DTexture_GetSurfaceLevel((IWineD3DTexture *)This->stateBlock->textures[textureNo], 0, &pSur);
1135                             IWineD3DSurface_SaveSnapshot(pSur, buffer);
1136                             IWineD3DSurface_Release(pSur);
1137                     } else  {
1138                         FIXME("base Texture isn't of type texture %d\n", IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]));
1139                     }
1140                 }
1141             }
1142            }
1143 #endif
1144         }
1145         TRACE("drawprim #%d\n", primCounter);
1146         ++primCounter;
1147     }
1148 #endif
1149
1150     /* Control goes back to the device, stateblock values may change again */
1151     This->isInDraw = FALSE;
1152 }
1153
1154 static void normalize_normal(float *n) {
1155     float length = n[0] * n[0] + n[1] * n[1] + n[2] * n[2];
1156     if(length == 0.0) return;
1157     length = sqrt(length);
1158     n[0] = n[0] / length;
1159     n[1] = n[1] / length;
1160     n[2] = n[2] / length;
1161 }
1162
1163 /* Tesselates a high order rectangular patch into single triangles using gl evaluators
1164  *
1165  * The problem is that OpenGL does not offer a direct way to return the tesselated primitives,
1166  * and they can't be sent off for rendering directly either. Tesselating is slow, so we want
1167  * to chache the patches in a vertex buffer. But more importantly, gl can't bind generated
1168  * attributes to numbered shader attributes, so we have to store them and rebind them as needed
1169  * in drawprim.
1170  *
1171  * To read back, the opengl feedback mode is used. This creates a proplem because we want
1172  * untransformed, unlit vertices, but feedback runs everything through transform and lighting.
1173  * Thus disable lighting and set identity matrices to get unmodified colors and positions.
1174  * To overcome clipping find the biggest x, y and z values of the vertices in the patch and scale
1175  * them to [-1.0;+1.0] and set the viewport up to scale them back.
1176  *
1177  * Normals are more tricky: Draw white vertices with 3 directional lights, and calculate the
1178  * resulting colors back to the normals.
1179  *
1180  * NOTE: This function activates a context for blitting, modifies matrices & viewport, but
1181  * does not restore it because normally a draw follows immediately afterwards. The caller is
1182  * responsible of taking care that either the gl states are restored, or the context activated
1183  * for drawing to reset the lastWasBlit flag.
1184  */
1185 HRESULT tesselate_rectpatch(IWineD3DDeviceImpl *This,
1186                             struct WineD3DRectPatch *patch) {
1187     unsigned int i, j, num_quads, out_vertex_size, buffer_size, d3d_out_vertex_size;
1188     float max_x = 0.0, max_y = 0.0, max_z = 0.0, neg_z = 0.0;
1189     WineDirect3DVertexStridedData strided;
1190     BYTE *data;
1191     WINED3DRECTPATCH_INFO *info = &patch->RectPatchInfo;
1192     DWORD vtxStride;
1193     GLenum feedback_type;
1194     GLfloat *feedbuffer;
1195
1196     /* First, locate the position data. This is provided in a vertex buffer in the stateblock.
1197      * Beware of vbos
1198      */
1199     memset(&strided, 0, sizeof(strided));
1200     primitiveDeclarationConvertToStridedData((IWineD3DDevice *) This, FALSE, &strided, NULL);
1201     if(strided.u.s.position.VBO) {
1202         IWineD3DVertexBufferImpl *vb;
1203         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[strided.u.s.position.streamNo];
1204         strided.u.s.position.lpData = (BYTE *) ((unsigned long) strided.u.s.position.lpData +
1205                                                 (unsigned long) vb->resource.allocatedMemory);
1206     }
1207     vtxStride = strided.u.s.position.dwStride;
1208     data = strided.u.s.position.lpData +
1209            vtxStride * info->Stride * info->StartVertexOffsetHeight +
1210            vtxStride * info->StartVertexOffsetWidth;
1211
1212     /* Not entirely sure about what happens with transformed vertices */
1213     if(strided.u.s.position_transformed) {
1214         FIXME("Transformed position in rectpatch generation\n");
1215     }
1216     if(vtxStride % sizeof(GLfloat)) {
1217         /* glMap2f reads vertex sizes in GLfloats, the d3d stride is in bytes.
1218          * I don't see how the stride could not be a multiple of 4, but make sure
1219          * to check it
1220          */
1221         ERR("Vertex stride is not a multiple of sizeof(GLfloat)\n");
1222     }
1223     if(info->Basis != WINED3DBASIS_BEZIER) {
1224         FIXME("Basis is %s, how to handle this?\n", debug_d3dbasis(info->Basis));
1225     }
1226     if(info->Degree != WINED3DDEGREE_CUBIC) {
1227         FIXME("Degree is %s, how to handle this?\n", debug_d3ddegree(info->Degree));
1228     }
1229
1230     /* First, get the boundary cube of the input data */
1231     for(j = 0; j < info->Height; j++) {
1232         for(i = 0; i < info->Width; i++) {
1233             float *v = (float *) (data + vtxStride * i + vtxStride * info->Stride * j);
1234             if(fabs(v[0]) > max_x) max_x = fabs(v[0]);
1235             if(fabs(v[1]) > max_y) max_y = fabs(v[1]);
1236             if(fabs(v[2]) > max_z) max_z = fabs(v[2]);
1237             if(v[2] < neg_z) neg_z = v[2];
1238         }
1239     }
1240
1241     /* This needs some improvements in the vertex decl code */
1242     FIXME("Cannot find data to generate. Only generating position and normals\n");
1243     patch->has_normals = TRUE;
1244     patch->has_texcoords = FALSE;
1245
1246     ENTER_GL();
1247     /* Simply activate the context for blitting. This disables all the things we don't want and
1248      * takes care for dirtifying. Dirtifying is prefered over pushing / popping, since drawing the
1249      * patch(as opposed to normal draws) will most likely need different changes anyway
1250      */
1251     ActivateContext(This, This->lastActiveRenderTarget, CTXUSAGE_BLIT);
1252
1253     glMatrixMode(GL_PROJECTION);
1254     checkGLcall("glMatrixMode(GL_PROJECTION)");
1255     glLoadIdentity();
1256     checkGLcall("glLoadIndentity()");
1257     glScalef(1 / (max_x) , 1 / (max_y), max_z == 0 ? 1 : 1 / ( 2 * max_z));
1258     glTranslatef(0, 0, 0.5);
1259     checkGLcall("glScalef");
1260     glViewport(-max_x, -max_y, 2 * (max_x), 2 * (max_y));
1261     checkGLcall("glViewport");
1262
1263     /* Some states to take care of. If we're in wireframe opengl will produce lines, and confuse
1264      * our feedback buffer parser
1265      */
1266     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1267     checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
1268     IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_FILLMODE));
1269     if(patch->has_normals) {
1270         float black[4] = {0, 0, 0, 0};
1271         float red[4]   = {1, 0, 0, 0};
1272         float green[4] = {0, 1, 0, 0};
1273         float blue[4]  = {0, 0, 1, 0};
1274         float white[4] = {1, 1, 1, 1};
1275         glEnable(GL_LIGHTING);
1276         checkGLcall("glEnable(GL_LIGHTING)");
1277         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
1278         checkGLcall("glLightModel for MODEL_AMBIENT");
1279         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_AMBIENT));
1280
1281         for(i = 3; i < GL_LIMITS(lights); i++) {
1282             glDisable(GL_LIGHT0 + i);
1283             checkGLcall("glDisable(GL_LIGHT0 + i)");
1284             IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(i));
1285         }
1286
1287         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(0));
1288         glLightfv(GL_LIGHT0, GL_DIFFUSE, red);
1289         glLightfv(GL_LIGHT0, GL_SPECULAR, black);
1290         glLightfv(GL_LIGHT0, GL_AMBIENT, black);
1291         glLightfv(GL_LIGHT0, GL_POSITION, red);
1292         glEnable(GL_LIGHT0);
1293         checkGLcall("Setting up light 1\n");
1294         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(1));
1295         glLightfv(GL_LIGHT1, GL_DIFFUSE, green);
1296         glLightfv(GL_LIGHT1, GL_SPECULAR, black);
1297         glLightfv(GL_LIGHT1, GL_AMBIENT, black);
1298         glLightfv(GL_LIGHT1, GL_POSITION, green);
1299         glEnable(GL_LIGHT1);
1300         checkGLcall("Setting up light 2\n");
1301         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(2));
1302         glLightfv(GL_LIGHT2, GL_DIFFUSE, blue);
1303         glLightfv(GL_LIGHT2, GL_SPECULAR, black);
1304         glLightfv(GL_LIGHT2, GL_AMBIENT, black);
1305         glLightfv(GL_LIGHT2, GL_POSITION, blue);
1306         glEnable(GL_LIGHT2);
1307         checkGLcall("Setting up light 3\n");
1308
1309         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_MATERIAL);
1310         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_COLORVERTEX));
1311         glDisable(GL_COLOR_MATERIAL);
1312         glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, black);
1313         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
1314         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
1315         checkGLcall("Setting up materials\n");
1316     }
1317
1318     /* Enable the needed maps.
1319      * GL_MAP2_VERTEX_3 is needed for positional data.
1320      * GL_AUTO_NORMAL to generate normals from the position. Do not use GL_MAP2_NORMAL.
1321      * GL_MAP2_TEXTURE_COORD_4 for texture coords
1322      */
1323     num_quads = ceilf(patch->numSegs[0]) * ceilf(patch->numSegs[1]);
1324     out_vertex_size = 3 /* position */;
1325     d3d_out_vertex_size = 3;
1326     glEnable(GL_MAP2_VERTEX_3);
1327     if(patch->has_normals && patch->has_texcoords) {
1328         FIXME("Texcoords not handled yet\n");
1329         feedback_type = GL_3D_COLOR_TEXTURE;
1330         out_vertex_size += 8;
1331         d3d_out_vertex_size += 7;
1332         glEnable(GL_AUTO_NORMAL);
1333         glEnable(GL_MAP2_TEXTURE_COORD_4);
1334     } else if(patch->has_texcoords) {
1335         FIXME("Texcoords not handled yet\n");
1336         feedback_type = GL_3D_COLOR_TEXTURE;
1337         out_vertex_size += 7;
1338         d3d_out_vertex_size += 4;
1339         glEnable(GL_MAP2_TEXTURE_COORD_4);
1340     } else if(patch->has_normals) {
1341         feedback_type = GL_3D_COLOR;
1342         out_vertex_size += 4;
1343         d3d_out_vertex_size += 3;
1344         glEnable(GL_AUTO_NORMAL);
1345     } else {
1346         feedback_type = GL_3D;
1347     }
1348     checkGLcall("glEnable vertex attrib generation");
1349
1350     buffer_size = num_quads * out_vertex_size * 2 /* triangle list */ * 3 /* verts per tri */
1351                    + 4 * num_quads /* 2 triangle markers per quad + num verts in tri */;
1352     feedbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, buffer_size * sizeof(float) * 8);
1353
1354     glMap2f(GL_MAP2_VERTEX_3,
1355             0, 1, vtxStride / sizeof(float), info->Width,
1356             0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1357             (float *) data);
1358     checkGLcall("glMap2f");
1359     if(patch->has_texcoords) {
1360         glMap2f(GL_MAP2_TEXTURE_COORD_4,
1361                 0, 1, vtxStride / sizeof(float), info->Width,
1362                 0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1363                 (float *) data);
1364         checkGLcall("glMap2f");
1365     }
1366     glMapGrid2f(ceilf(patch->numSegs[0]), 0.0, 1.0, ceilf(patch->numSegs[1]), 0.0, 1.0);
1367     checkGLcall("glMapGrid2f");
1368
1369     glFeedbackBuffer(buffer_size * 2, feedback_type, feedbuffer);
1370     checkGLcall("glFeedbackBuffer");
1371     glRenderMode(GL_FEEDBACK);
1372
1373     glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1374     checkGLcall("glEvalMesh2\n");
1375
1376     i = glRenderMode(GL_RENDER);
1377     if(i == -1) {
1378         ERR("Feedback failed. Expected %d elements back\n", buffer_size);
1379         Sleep(10000);
1380         HeapFree(GetProcessHeap(), 0, feedbuffer);
1381         return WINED3DERR_DRIVERINTERNALERROR;
1382     } else if(i != buffer_size) {
1383         ERR("Unexpected amount of elements returned. Expected %d, got %d\n", buffer_size, i);
1384         Sleep(10000);
1385         HeapFree(GetProcessHeap(), 0, feedbuffer);
1386         return WINED3DERR_DRIVERINTERNALERROR;
1387     } else {
1388         TRACE("Got %d elements as expected\n", i);
1389     }
1390
1391     HeapFree(GetProcessHeap(), 0, patch->mem);
1392     patch->mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_quads * 6 * d3d_out_vertex_size * sizeof(float) * 8);
1393     i = 0;
1394     for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1395         if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1396             ERR("Unexpected token: %f\n", feedbuffer[j]);
1397             continue;
1398         }
1399         if(feedbuffer[j + 1] != 3) {
1400             ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1401             continue;
1402         }
1403         /* Somehow there are different ideas about back / front facing, so fix up the
1404          * vertex order
1405          */
1406         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 2 + 2]; /* x, triangle 2 */
1407         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 2 + 3]; /* y, triangle 2 */
1408         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 2 + 4] - 0.5) * 4 * max_z; /* z, triangle 3 */
1409         if(patch->has_normals) {
1410             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 2 + 5];
1411             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 2 + 6];
1412             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 2 + 7];
1413         }
1414         i += d3d_out_vertex_size;
1415
1416         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 1 + 2]; /* x, triangle 2 */
1417         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 1 + 3]; /* y, triangle 2 */
1418         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 1 + 4] - 0.5) * 4 * max_z; /* z, triangle 2 */
1419         if(patch->has_normals) {
1420             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 1 + 5];
1421             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 1 + 6];
1422             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 1 + 7];
1423         }
1424         i += d3d_out_vertex_size;
1425
1426         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 0 + 2]; /* x, triangle 1 */
1427         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 0 + 3]; /* y, triangle 1 */
1428         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 0 + 4] - 0.5) * 4 * max_z; /* z, triangle 1 */
1429         if(patch->has_normals) {
1430             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 0 + 5];
1431             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 0 + 6];
1432             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 0 + 7];
1433         }
1434         i += d3d_out_vertex_size;
1435     }
1436
1437     if(patch->has_normals) {
1438         /* Now do the same with reverse light directions */
1439         float x[4] = {-1,  0,  0, 0};
1440         float y[4] = { 0, -1,  0, 0};
1441         float z[4] = { 0,  0, -1, 0};
1442         glLightfv(GL_LIGHT0, GL_POSITION, x);
1443         glLightfv(GL_LIGHT1, GL_POSITION, y);
1444         glLightfv(GL_LIGHT2, GL_POSITION, z);
1445         checkGLcall("Setting up reverse light directions\n");
1446
1447         glRenderMode(GL_FEEDBACK);
1448         checkGLcall("glRenderMode(GL_FEEDBACK)");
1449         glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1450         checkGLcall("glEvalMesh2\n");
1451         i = glRenderMode(GL_RENDER);
1452         checkGLcall("glRenderMode(GL_RENDER)");
1453
1454         i = 0;
1455         for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1456             if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1457                 ERR("Unexpected token: %f\n", feedbuffer[j]);
1458                 continue;
1459             }
1460             if(feedbuffer[j + 1] != 3) {
1461                 ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1462                 continue;
1463             }
1464             if(patch->mem[i + 3] == 0.0)
1465                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 2 + 5];
1466             if(patch->mem[i + 4] == 0.0)
1467                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 2 + 6];
1468             if(patch->mem[i + 5] == 0.0)
1469                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 2 + 7];
1470             normalize_normal(patch->mem + i + 3);
1471             i += d3d_out_vertex_size;
1472
1473             if(patch->mem[i + 3] == 0.0)
1474                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 1 + 5];
1475             if(patch->mem[i + 4] == 0.0)
1476                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 1 + 6];
1477             if(patch->mem[i + 5] == 0.0)
1478                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 1 + 7];
1479             normalize_normal(patch->mem + i + 3);
1480             i += d3d_out_vertex_size;
1481
1482             if(patch->mem[i + 3] == 0.0)
1483                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 0 + 5];
1484             if(patch->mem[i + 4] == 0.0)
1485                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 0 + 6];
1486             if(patch->mem[i + 5] == 0.0)
1487                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 0 + 7];
1488             normalize_normal(patch->mem + i + 3);
1489             i += d3d_out_vertex_size;
1490         }
1491     }
1492
1493     glDisable(GL_MAP2_VERTEX_3);
1494     glDisable(GL_AUTO_NORMAL);
1495     glDisable(GL_MAP2_NORMAL);
1496     glDisable(GL_MAP2_TEXTURE_COORD_4);
1497     checkGLcall("glDisable vertex attrib generation");
1498     LEAVE_GL();
1499
1500     HeapFree(GetProcessHeap(), 0, feedbuffer);
1501
1502     vtxStride = 3 * sizeof(float);
1503     if(patch->has_normals) {
1504         vtxStride += 3 * sizeof(float);
1505     }
1506     if(patch->has_texcoords) {
1507         vtxStride += 4 * sizeof(float);
1508     }
1509     memset(&patch->strided, 0, sizeof(&patch->strided));
1510     patch->strided.u.s.position.lpData = (BYTE *) patch->mem;
1511     patch->strided.u.s.position.dwStride = vtxStride;
1512     patch->strided.u.s.position.dwType = WINED3DDECLTYPE_FLOAT3;
1513     patch->strided.u.s.position.streamNo = 255;
1514
1515     if(patch->has_normals) {
1516         patch->strided.u.s.normal.lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1517         patch->strided.u.s.normal.dwStride = vtxStride;
1518         patch->strided.u.s.normal.dwType = WINED3DDECLTYPE_FLOAT3;
1519         patch->strided.u.s.normal.streamNo = 255;
1520     }
1521     if(patch->has_texcoords) {
1522         patch->strided.u.s.texCoords[0].lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1523         if(patch->has_normals) {
1524             patch->strided.u.s.texCoords[0].lpData += 3 * sizeof(float);
1525         }
1526         patch->strided.u.s.texCoords[0].dwStride = vtxStride;
1527         patch->strided.u.s.texCoords[0].dwType = WINED3DDECLTYPE_FLOAT4;
1528         /* MAX_STREAMS index points to an unused element in stateblock->streamOffsets which
1529          * always remains set to 0. Windows uses stream 255 here, but this is not visible to the
1530          * application.
1531          */
1532         patch->strided.u.s.texCoords[0].streamNo = MAX_STREAMS;
1533     }
1534
1535     return WINED3D_OK;
1536 }