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     DWORD numPreloadStreams = This->stateBlock->streamIsUP ? 0 : vertexDeclaration->num_streams;
 160     DWORD *streams = vertexDeclaration->streams;
 161
 162     /* Check for transformed vertices, disable vertex shader if present */
 163     strided->u.s.position_transformed = vertexDeclaration->position_transformed;
 164     if(vertexDeclaration->position_transformed) {
 165         useVertexShaderFunction = FALSE;
 166     }
 167
 168     /* Translate the declaration into strided data */
 169     for (i = 0 ; i < vertexDeclaration->declarationWNumElements - 1; ++i) {
 170         GLint streamVBO = 0;
 171         BOOL stride_used;
 172         unsigned int idx;
 173
 174         element = vertexDeclaration->pDeclarationWine + i;
 175         TRACE("%p Element %p (%d of %d)\n", vertexDeclaration->pDeclarationWine,
 176             element,  i + 1, vertexDeclaration->declarationWNumElements - 1);
 177
 178         if (This->stateBlock->streamSource[element->Stream] == NULL)
 179             continue;
 180
 181         if (This->stateBlock->streamIsUP) {
 182             TRACE("Stream is up %d, %p\n", element->Stream, This->stateBlock->streamSource[element->Stream]);
 183             streamVBO = 0;
 184             data    = (BYTE *)This->stateBlock->streamSource[element->Stream];
 185         } else {
 186             TRACE("Stream isn't up %d, %p\n", element->Stream, This->stateBlock->streamSource[element->Stream]);
 187             data    = IWineD3DVertexBufferImpl_GetMemory(This->stateBlock->streamSource[element->Stream], 0, &streamVBO);
 188             if(fixup) {
 189                 if( streamVBO != 0) *fixup = TRUE;
 190                 else if(*fixup && !useVertexShaderFunction &&
 191                        (element->Usage == WINED3DDECLUSAGE_COLOR ||
 192                         element->Usage == WINED3DDECLUSAGE_POSITIONT)) {
 193                     /* This may be bad with the fixed function pipeline */
 194                     FIXME("Missing vbo streams with unfixed colors or transformed position, expect problems\n");
 195                 }
 196             }
 197         }
 198         stride  = This->stateBlock->streamStride[element->Stream];
 199         data += element->Offset;
 200         reg = element->Reg;
 201
 202         TRACE("Offset %d Stream %d UsageIndex %d\n", element->Offset, element->Stream, element->UsageIndex);
 203
 204         if (useVertexShaderFunction)
 205             stride_used = vshader_get_input(This->stateBlock->vertexShader,
 206                 element->Usage, element->UsageIndex, &idx);
 207         else
 208             stride_used = fixed_get_input(element->Usage, element->UsageIndex, &idx);
 209
 210         if (stride_used) {
 211             TRACE("Loaded %s array %u [usage=%s, usage_idx=%u, "
 212                     "stream=%u, offset=%u, stride=%u, type=%s, VBO=%u]\n",
 213                     useVertexShaderFunction? "shader": "fixed function", idx,
 214                     debug_d3ddeclusage(element->Usage), element->UsageIndex,
 215                     element->Stream, element->Offset, stride, debug_d3ddecltype(element->Type), streamVBO);
 216
 217             strided->u.input[idx].lpData = data;
 218             strided->u.input[idx].dwType = element->Type;
 219             strided->u.input[idx].dwStride = stride;
 220             strided->u.input[idx].VBO = streamVBO;
 221             strided->u.input[idx].streamNo = element->Stream;
 222         }
 223     }
 224     /* Now call PreLoad on all the vertex buffers. In the very rare case
 225      * that the buffers stopps converting PreLoad will dirtify the VDECL again.
 226      * The vertex buffer can now use the strided structure in the device instead of finding its
 227      * own again.
 228      *
 229      * NULL streams won't be recorded in the array, UP streams won't be either. A stream is only
 230      * once in there.
 231      */
 232     for(i=0; i < numPreloadStreams; i++) {
 233         IWineD3DVertexBuffer_PreLoad(This->stateBlock->streamSource[streams[i]]);
 234     }
 235 }
 236
 237 static void drawStridedFast(IWineD3DDevice *iface,UINT numberOfVertices, GLenum glPrimitiveType,
 238                      const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex) {
 239     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 240
 241     if (idxSize != 0 /* This crashes sometimes!*/) {
 242         TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 243         idxData = idxData == (void *)-1 ? NULL : idxData;
 244 #if 1
 245         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 246                      (const char *)idxData+(idxSize * startIdx));
 247         checkGLcall("glDrawElements");
 248 #else /* using drawRangeElements may be faster */
 249
 250         glDrawRangeElements(glPrimitiveType, minIndex, minIndex + numberOfVertices - 1, numberOfVertices,
 251                       idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 252                       (const char *)idxData+(idxSize * startIdx));
 253         checkGLcall("glDrawRangeElements");
 254 #endif
 255
 256     } else {
 257
 258         /* Note first is now zero as we shuffled along earlier */
 259         TRACE("(%p) : glDrawArrays(%x, 0, %d)\n", This, glPrimitiveType, numberOfVertices);
 260         glDrawArrays(glPrimitiveType, startVertex, numberOfVertices);
 261         checkGLcall("glDrawArrays");
 262
 263     }
 264
 265     return;
 266 }
 267
 268 /*
 269  * Actually draw using the supplied information.
 270  * Slower GL version which extracts info about each vertex in turn
 271  */
 272
 273 static void drawStridedSlow(IWineD3DDevice *iface, WineDirect3DVertexStridedData *sd,
 274                      UINT NumVertexes, GLenum glPrimType,
 275                      const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex) {
 276
 277     unsigned int               textureNo    = 0;
 278     const WORD                *pIdxBufS     = NULL;
 279     const DWORD               *pIdxBufL     = NULL;
 280     LONG                       vx_index;
 281     float x  = 0.0f, y  = 0.0f, z = 0.0f;  /* x,y,z coordinates          */
 282     float rhw = 0.0f;                      /* rhw                        */
 283     DWORD diffuseColor = 0xFFFFFFFF;       /* Diffuse Color              */
 284     DWORD specularColor = 0;               /* Specular Color             */
 285     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 286     UINT *streamOffset = This->stateBlock->streamOffset;
 287     DWORD                      SkipnStrides = startVertex + This->stateBlock->loadBaseVertexIndex;
 288
 289     BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
 290     BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
 291
 292     TRACE("Using slow vertex array code\n");
 293
 294     /* Variable Initialization */
 295     if (idxSize != 0) {
 296         /* Immediate mode drawing can't make use of indices in a vbo - get the data from the index buffer.
 297          * If the index buffer has no vbo(not supported or other reason), or with user pointer drawing
 298          * idxData will be != NULL
 299          */
 300         if(idxData == NULL) {
 301             idxData = ((IWineD3DIndexBufferImpl *) This->stateBlock->pIndexData)->resource.allocatedMemory;
 302         }
 303
 304         if (idxSize == 2) pIdxBufS = (const WORD *) idxData;
 305         else pIdxBufL = (const DWORD *) idxData;
 306     }
 307
 308     /* Adding the stream offset once is cheaper than doing it every iteration. Do not modify the strided data, it is a pointer
 309      * to the strided Data in the device and might be needed intact on the next draw
 310      */
 311     for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 312         if(sd->u.s.texCoords[textureNo].lpData) {
 313             texCoords[textureNo] = sd->u.s.texCoords[textureNo].lpData + streamOffset[sd->u.s.texCoords[textureNo].streamNo];
 314         } else {
 315             texCoords[textureNo] = NULL;
 316         }
 317     }
 318     if(sd->u.s.diffuse.lpData) {
 319         diffuse = sd->u.s.diffuse.lpData + streamOffset[sd->u.s.diffuse.streamNo];
 320     }
 321     if(sd->u.s.specular.lpData) {
 322         specular = sd->u.s.specular.lpData + streamOffset[sd->u.s.specular.streamNo];
 323     }
 324     if(sd->u.s.normal.lpData) {
 325         normal = sd->u.s.normal.lpData + streamOffset[sd->u.s.normal.streamNo];
 326     }
 327     if(sd->u.s.position.lpData) {
 328         position = sd->u.s.position.lpData + streamOffset[sd->u.s.position.streamNo];
 329     }
 330
 331     /* Start drawing in GL */
 332     VTRACE(("glBegin(%x)\n", glPrimType));
 333     glBegin(glPrimType);
 334
 335     /* Default settings for data that is not passed */
 336     if (sd->u.s.normal.lpData == NULL) {
 337         glNormal3f(0, 0, 1);
 338     }
 339     if(sd->u.s.diffuse.lpData == NULL) {
 340         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 341     }
 342     if(sd->u.s.specular.lpData == NULL) {
 343         if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 344             GL_EXTCALL(glSecondaryColor3fEXT)(0, 0, 0);
 345         }
 346     }
 347
 348     /* We shouldn't start this function if any VBO is involved. Should I put a safety check here?
 349      * Guess it's not necessary(we crash then anyway) and would only eat CPU time
 350      */
 351
 352     /* For each primitive */
 353     for (vx_index = 0; vx_index < NumVertexes; ++vx_index) {
 354
 355         /* Initialize diffuse color */
 356         diffuseColor = 0xFFFFFFFF;
 357
 358         /* Blending data and Point sizes are not supported by this function. They are not supported by the fixed
 359          * function pipeline at all. A Fixme for them is printed after decoding the vertex declaration
 360          */
 361
 362         /* For indexed data, we need to go a few more strides in */
 363         if (idxData != NULL) {
 364
 365             /* Indexed so work out the number of strides to skip */
 366             if (idxSize == 2) {
 367                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufS[startIdx+vx_index]));
 368                 SkipnStrides = pIdxBufS[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 369             } else {
 370                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufL[startIdx+vx_index]));
 371                 SkipnStrides = pIdxBufL[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 372             }
 373         }
 374
 375         /* Texture coords --------------------------- */
 376         for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 377
 378             if (!GL_SUPPORT(ARB_MULTITEXTURE) && textureNo > 0) {
 379                 FIXME("Program using multiple concurrent textures which this opengl implementation doesn't support\n");
 380                 continue ;
 381             }
 382
 383             /* Query tex coords */
 384             if (This->stateBlock->textures[textureNo] != NULL) {
 385
 386                 int    coordIdx = This->stateBlock->textureState[textureNo][WINED3DTSS_TEXCOORDINDEX];
 387                 float *ptrToCoords = NULL;
 388                 float  s = 0.0, t = 0.0, r = 0.0, q = 0.0;
 389
 390                 if (coordIdx > 7) {
 391                     VTRACE(("tex: %d - Skip tex coords, as being system generated\n", textureNo));
 392                     continue;
 393                 } else if (coordIdx < 0) {
 394                     FIXME("tex: %d - Coord index %d is less than zero, expect a crash.\n", textureNo, coordIdx);
 395                     continue;
 396                 }
 397
 398                 ptrToCoords = (float *)(texCoords[coordIdx] + (SkipnStrides * sd->u.s.texCoords[coordIdx].dwStride));
 399                 if (texCoords[coordIdx] == NULL) {
 400                     TRACE("tex: %d - Skipping tex coords, as no data supplied\n", textureNo);
 401                     continue;
 402                 } else {
 403                     int texture_idx = This->texUnitMap[textureNo];
 404                     int coordsToUse = sd->u.s.texCoords[coordIdx].dwType + 1; /* 0 == WINED3DDECLTYPE_FLOAT1 etc */
 405
 406                     if (texture_idx == -1) continue;
 407
 408                     /* The coords to supply depend completely on the fvf / vertex shader */
 409                     switch (coordsToUse) {
 410                     case 4: q = ptrToCoords[3]; /* drop through */
 411                     case 3: r = ptrToCoords[2]; /* drop through */
 412                     case 2: t = ptrToCoords[1]; /* drop through */
 413                     case 1: s = ptrToCoords[0];
 414                     }
 415
 416                     /* Projected is more 'fun' - Move the last coord to the 'q'
 417                           parameter (see comments under WINED3DTSS_TEXTURETRANSFORMFLAGS */
 418                     if ((This->stateBlock->textureState[textureNo][WINED3DTSS_TEXTURETRANSFORMFLAGS] != WINED3DTTFF_DISABLE) &&
 419                         (This->stateBlock->textureState[textureNo][WINED3DTSS_TEXTURETRANSFORMFLAGS] & WINED3DTTFF_PROJECTED)) {
 420
 421                         if (This->stateBlock->textureState[textureNo][WINED3DTSS_TEXTURETRANSFORMFLAGS] & WINED3DTTFF_PROJECTED) {
 422                             switch (coordsToUse) {
 423                             case 0:  /* Drop Through */
 424                             case 1:
 425                                 FIXME("WINED3DTTFF_PROJECTED but only zero or one coordinate?\n");
 426                                 break;
 427                             case 2:
 428                                 q = t;
 429                                 t = 0.0;
 430                                 coordsToUse = 4;
 431                                 break;
 432                             case 3:
 433                                 q = r;
 434                                 r = 0.0;
 435                                 coordsToUse = 4;
 436                                 break;
 437                             case 4:  /* Nop here */
 438                                 break;
 439                             default:
 440                                 FIXME("Unexpected WINED3DTSS_TEXTURETRANSFORMFLAGS value of %d\n",
 441                                       This->stateBlock->textureState[textureNo][WINED3DTSS_TEXTURETRANSFORMFLAGS] & WINED3DTTFF_PROJECTED);
 442                             }
 443                         }
 444                     }
 445
 446                     switch (coordsToUse) {   /* Supply the provided texture coords */
 447                     case WINED3DTTFF_COUNT1:
 448                         VTRACE(("tex:%d, s=%f\n", textureNo, s));
 449                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 450                             GL_EXTCALL(glMultiTexCoord1fARB(GL_TEXTURE0_ARB + texture_idx, s));
 451                         } else {
 452                             glTexCoord1f(s);
 453                         }
 454                         break;
 455                     case WINED3DTTFF_COUNT2:
 456                         VTRACE(("tex:%d, s=%f, t=%f\n", textureNo, s, t));
 457                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 458                             GL_EXTCALL(glMultiTexCoord2fARB(GL_TEXTURE0_ARB + texture_idx, s, t));
 459                         } else {
 460                             glTexCoord2f(s, t);
 461                         }
 462                         break;
 463                     case WINED3DTTFF_COUNT3:
 464                         VTRACE(("tex:%d, s=%f, t=%f, r=%f\n", textureNo, s, t, r));
 465                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 466                             GL_EXTCALL(glMultiTexCoord3fARB(GL_TEXTURE0_ARB + texture_idx, s, t, r));
 467                         } else {
 468                             glTexCoord3f(s, t, r);
 469                         }
 470                         break;
 471                     case WINED3DTTFF_COUNT4:
 472                         VTRACE(("tex:%d, s=%f, t=%f, r=%f, q=%f\n", textureNo, s, t, r, q));
 473                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 474                             GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + texture_idx, s, t, r, q));
 475                         } else {
 476                             glTexCoord4f(s, t, r, q);
 477                         }
 478                         break;
 479                     default:
 480                         FIXME("Should not get here as coordsToUse is two bits only (%x)!\n", coordsToUse);
 481                     }
 482                 }
 483             }
 484         } /* End of textures */
 485
 486         /* Diffuse -------------------------------- */
 487         if (diffuse) {
 488             DWORD *ptrToCoords = (DWORD *)(diffuse + (SkipnStrides * sd->u.s.diffuse.dwStride));
 489             diffuseColor = ptrToCoords[0];
 490             VTRACE(("diffuseColor=%lx\n", diffuseColor));
 491
 492             glColor4ub(D3DCOLOR_B_R(diffuseColor),
 493                      D3DCOLOR_B_G(diffuseColor),
 494                      D3DCOLOR_B_B(diffuseColor),
 495                      D3DCOLOR_B_A(diffuseColor));
 496             VTRACE(("glColor4ub: r,g,b,a=%lu,%lu,%lu,%lu\n",
 497                     D3DCOLOR_B_R(diffuseColor),
 498                     D3DCOLOR_B_G(diffuseColor),
 499                     D3DCOLOR_B_B(diffuseColor),
 500                     D3DCOLOR_B_A(diffuseColor)));
 501
 502             if(This->activeContext->num_untracked_materials) {
 503                 unsigned char i;
 504                 float color[4];
 505                 color[0] = D3DCOLOR_B_R(diffuseColor) / 255.0;
 506                 color[1] = D3DCOLOR_B_G(diffuseColor) / 255.0;
 507                 color[2] = D3DCOLOR_B_B(diffuseColor) / 255.0;
 508                 color[3] = D3DCOLOR_B_A(diffuseColor) / 255.0;
 509
 510                 for(i = 0; i < This->activeContext->num_untracked_materials; i++) {
 511                     glMaterialfv(GL_FRONT_AND_BACK, This->activeContext->untracked_materials[i], color);
 512                 }
 513             }
 514         }
 515
 516         /* Specular ------------------------------- */
 517         if (specular) {
 518             DWORD *ptrToCoords = (DWORD *)(specular + (SkipnStrides * sd->u.s.specular.dwStride));
 519             specularColor = ptrToCoords[0];
 520             VTRACE(("specularColor=%lx\n", specularColor));
 521
 522             /* special case where the fog density is stored in the specular alpha channel */
 523             if(This->stateBlock->renderState[WINED3DRS_FOGENABLE] &&
 524               (This->stateBlock->renderState[WINED3DRS_FOGVERTEXMODE] == WINED3DFOG_NONE || sd->u.s.position.dwType == WINED3DDECLTYPE_FLOAT4 )&&
 525               This->stateBlock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE) {
 526                 if(GL_SUPPORT(EXT_FOG_COORD)) {
 527                     GL_EXTCALL(glFogCoordfEXT(specularColor >> 24));
 528                 } else {
 529                     static BOOL warned = FALSE;
 530                     if(!warned) {
 531                         /* TODO: Use the fog table code from old ddraw */
 532                         FIXME("Implement fog for transformed vertices in software\n");
 533                         warned = TRUE;
 534                     }
 535                 }
 536             }
 537
 538             VTRACE(("glSecondaryColor4ub: r,g,b=%lu,%lu,%lu\n",
 539                     D3DCOLOR_B_R(specularColor),
 540                     D3DCOLOR_B_G(specularColor),
 541                     D3DCOLOR_B_B(specularColor)));
 542             if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 543                 GL_EXTCALL(glSecondaryColor3ubEXT)(
 544                            D3DCOLOR_B_R(specularColor),
 545                            D3DCOLOR_B_G(specularColor),
 546                            D3DCOLOR_B_B(specularColor));
 547             } else {
 548                 /* Do not worry if specular colour missing and disable request */
 549                 VTRACE(("Specular color extensions not supplied\n"));
 550             }
 551         }
 552
 553         /* Normal -------------------------------- */
 554         if (normal != NULL) {
 555             float *ptrToCoords = (float *)(normal + (SkipnStrides * sd->u.s.normal.dwStride));
 556
 557             VTRACE(("glNormal:nx,ny,nz=%f,%f,%f\n", ptrToCoords[0], ptrToCoords[1], ptrToCoords[2]));
 558             glNormal3f(ptrToCoords[0], ptrToCoords[1], ptrToCoords[2]);
 559         }
 560
 561         /* Position -------------------------------- */
 562         if (position) {
 563             float *ptrToCoords = (float *)(position + (SkipnStrides * sd->u.s.position.dwStride));
 564             x = ptrToCoords[0];
 565             y = ptrToCoords[1];
 566             z = ptrToCoords[2];
 567             rhw = 1.0;
 568             VTRACE(("x,y,z=%f,%f,%f\n", x,y,z));
 569
 570             /* RHW follows, only if transformed, ie 4 floats were provided */
 571             if (sd->u.s.position_transformed) {
 572                 rhw = ptrToCoords[3];
 573                 VTRACE(("rhw=%f\n", rhw));
 574             }
 575
 576             if (1.0f == rhw || ((rhw < eps) && (rhw > -eps))) {
 577                 VTRACE(("Vertex: glVertex:x,y,z=%f,%f,%f\n", x,y,z));
 578                 glVertex3f(x, y, z);
 579             } else {
 580                 GLfloat w = 1.0 / rhw;
 581                 VTRACE(("Vertex: glVertex:x,y,z=%f,%f,%f / rhw=%f\n", x,y,z,rhw));
 582                 glVertex4f(x*w, y*w, z*w, w);
 583             }
 584         }
 585
 586         /* For non indexed mode, step onto next parts */
 587         if (idxData == NULL) {
 588             ++SkipnStrides;
 589         }
 590     }
 591
 592     glEnd();
 593     checkGLcall("glEnd and previous calls");
 594 }
 595
 596 static void depth_blt(IWineD3DDevice *iface, GLuint texture) {
 597     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 598     GLint old_binding = 0;
 599
 600     glPushAttrib(GL_ENABLE_BIT | GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
 601
 602     glDisable(GL_CULL_FACE);
 603     glEnable(GL_BLEND);
 604     glDisable(GL_ALPHA_TEST);
 605     glDisable(GL_SCISSOR_TEST);
 606     glDisable(GL_STENCIL_TEST);
 607     glEnable(GL_DEPTH_TEST);
 608     glDepthFunc(GL_ALWAYS);
 609     glBlendFunc(GL_ZERO, GL_ONE);
 610
 611     GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
 612     glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
 613     glBindTexture(GL_TEXTURE_2D, texture);
 614     glEnable(GL_TEXTURE_2D);
 615
 616     This->shader_backend->shader_select_depth_blt(iface);
 617
 618     glBegin(GL_TRIANGLE_STRIP);
 619     glVertex2f(-1.0f, -1.0f);
 620     glVertex2f(1.0f, -1.0f);
 621     glVertex2f(-1.0f, 1.0f);
 622     glVertex2f(1.0f, 1.0f);
 623     glEnd();
 624
 625     glBindTexture(GL_TEXTURE_2D, old_binding);
 626
 627     glPopAttrib();
 628
 629     /* Reselect the old shaders. There doesn't seem to be any glPushAttrib bit for arb shaders,
 630      * and this seems easier and more efficient than providing the shader backend with a private
 631      * storage to read and restore the old shader settings
 632      */
 633     This->shader_backend->shader_select(iface, use_ps(This), use_vs(This));
 634 }
 635
 636 static void depth_copy(IWineD3DDevice *iface) {
 637     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 638     IWineD3DSurfaceImpl *depth_stencil = (IWineD3DSurfaceImpl *)This->depthStencilBuffer;
 639
 640     /* Only copy the depth buffer if there is one. */
 641     if (!depth_stencil) return;
 642
 643     /* TODO: Make this work for modes other than FBO */
 644     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) return;
 645
 646     if (depth_stencil->current_renderbuffer) {
 647         FIXME("Not supported with fixed up depth stencil\n");
 648         return;
 649     }
 650
 651     if (This->render_offscreen) {
 652         static GLuint tmp_texture = 0;
 653         GLint old_binding = 0;
 654
 655         TRACE("Copying onscreen depth buffer to offscreen surface\n");
 656
 657         if (!tmp_texture) {
 658             glGenTextures(1, &tmp_texture);
 659         }
 660
 661         /* Note that we use depth_blt here as well, rather than glCopyTexImage2D
 662          * directly on the FBO texture. That's because we need to flip. */
 663         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
 664         glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
 665         glBindTexture(GL_TEXTURE_2D, tmp_texture);
 666         glCopyTexImage2D(depth_stencil->glDescription.target,
 667                 depth_stencil->glDescription.level,
 668                 depth_stencil->glDescription.glFormatInternal,
 669                 0,
 670                 0,
 671                 depth_stencil->currentDesc.Width,
 672                 depth_stencil->currentDesc.Height,
 673                 0);
 674         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 675         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 676         glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);
 677         glBindTexture(GL_TEXTURE_2D, old_binding);
 678
 679         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, This->fbo));
 680         checkGLcall("glBindFramebuffer()");
 681         depth_blt(iface, tmp_texture);
 682         checkGLcall("depth_blt");
 683     } else {
 684         TRACE("Copying offscreen surface to onscreen depth buffer\n");
 685
 686         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
 687         checkGLcall("glBindFramebuffer()");
 688         depth_blt(iface, depth_stencil->glDescription.textureName);
 689         checkGLcall("depth_blt");
 690     }
 691 }
 692
 693 static inline void drawStridedInstanced(IWineD3DDevice *iface, WineDirect3DVertexStridedData *sd, UINT numberOfVertices,
 694                                  GLenum glPrimitiveType, const void *idxData, short idxSize, ULONG minIndex,
 695                                  ULONG startIdx, ULONG startVertex) {
 696     UINT numInstances = 0;
 697     int numInstancedAttribs = 0, i, j;
 698     UINT instancedData[sizeof(sd->u.input) / sizeof(sd->u.input[0]) /* 16 */];
 699     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *) iface;
 700     IWineD3DStateBlockImpl *stateblock = This->stateBlock;
 701
 702     if (idxSize == 0) {
 703         /* This is a nasty thing. MSDN says no hardware supports that and apps have to use software vertex processing.
 704          * We don't support this for now
 705          *
 706          * Shouldn't be too hard to support with opengl, in theory just call glDrawArrays instead of drawElements.
 707          * But the StreamSourceFreq value has a different meaning in that situation.
 708          */
 709         FIXME("Non-indexed instanced drawing is not supported\n");
 710         return;
 711     }
 712
 713     TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 714     idxData = idxData == (void *)-1 ? NULL : idxData;
 715
 716     /* First, figure out how many instances we have to draw */
 717     for(i = 0; i < MAX_STREAMS; i++) {
 718         /* Look at all non-instanced streams */
 719         if(!(stateblock->streamFlags[i] & WINED3DSTREAMSOURCE_INSTANCEDATA) &&
 720            stateblock->streamSource[i]) {
 721             int inst = stateblock->streamFreq[i];
 722
 723             if(numInstances && inst != numInstances) {
 724                 ERR("Two streams specify a different number of instances. Got %d, new is %d\n", numInstances, inst);
 725             }
 726             numInstances = inst;
 727         }
 728     }
 729
 730     for(i = 0; i < sizeof(sd->u.input) / sizeof(sd->u.input[0]); i++) {
 731         if(stateblock->streamFlags[sd->u.input[i].streamNo] & WINED3DSTREAMSOURCE_INSTANCEDATA) {
 732             instancedData[numInstancedAttribs] = i;
 733             numInstancedAttribs++;
 734         }
 735     }
 736
 737     /* now draw numInstances instances :-) */
 738     for(i = 0; i < numInstances; i++) {
 739         /* Specify the instanced attributes using immediate mode calls */
 740         for(j = 0; j < numInstancedAttribs; j++) {
 741             BYTE *ptr = sd->u.input[instancedData[j]].lpData +
 742                         sd->u.input[instancedData[j]].dwStride * i +
 743                         stateblock->streamOffset[sd->u.input[instancedData[j]].streamNo];
 744             if(sd->u.input[instancedData[j]].VBO) {
 745                 IWineD3DVertexBufferImpl *vb = (IWineD3DVertexBufferImpl *) stateblock->streamSource[sd->u.input[instancedData[j]].streamNo];
 746                 ptr += (long) vb->resource.allocatedMemory;
 747             }
 748
 749             switch(sd->u.input[instancedData[j]].dwType) {
 750                 case WINED3DDECLTYPE_FLOAT1:
 751                     GL_EXTCALL(glVertexAttrib1fvARB(instancedData[j], (float *) ptr));
 752                     break;
 753                 case WINED3DDECLTYPE_FLOAT2:
 754                     GL_EXTCALL(glVertexAttrib2fvARB(instancedData[j], (float *) ptr));
 755                     break;
 756                 case WINED3DDECLTYPE_FLOAT3:
 757                     GL_EXTCALL(glVertexAttrib3fvARB(instancedData[j], (float *) ptr));
 758                     break;
 759                 case WINED3DDECLTYPE_FLOAT4:
 760                     GL_EXTCALL(glVertexAttrib4fvARB(instancedData[j], (float *) ptr));
 761                     break;
 762
 763                 case WINED3DDECLTYPE_UBYTE4:
 764                     GL_EXTCALL(glVertexAttrib4ubvARB(instancedData[j], ptr));
 765                     break;
 766                 case WINED3DDECLTYPE_UBYTE4N:
 767                 case WINED3DDECLTYPE_D3DCOLOR:
 768                     GL_EXTCALL(glVertexAttrib4NubvARB(instancedData[j], ptr));
 769                     break;
 770
 771                 case WINED3DDECLTYPE_SHORT2:
 772                     GL_EXTCALL(glVertexAttrib4svARB(instancedData[j], (GLshort *) ptr));
 773                     break;
 774                 case WINED3DDECLTYPE_SHORT4:
 775                     GL_EXTCALL(glVertexAttrib4svARB(instancedData[j], (GLshort *) ptr));
 776                     break;
 777
 778                 case WINED3DDECLTYPE_SHORT2N:
 779                 {
 780                     GLshort s[4] = {((short *) ptr)[0], ((short *) ptr)[1], 0, 1};
 781                     GL_EXTCALL(glVertexAttrib4NsvARB(instancedData[j], s));
 782                     break;
 783                 }
 784                 case WINED3DDECLTYPE_USHORT2N:
 785                 {
 786                     GLushort s[4] = {((unsigned short *) ptr)[0], ((unsigned short *) ptr)[1], 0, 1};
 787                     GL_EXTCALL(glVertexAttrib4NusvARB(instancedData[j], s));
 788                     break;
 789                 }
 790                 case WINED3DDECLTYPE_SHORT4N:
 791                     GL_EXTCALL(glVertexAttrib4NsvARB(instancedData[j], (GLshort *) ptr));
 792                     break;
 793                 case WINED3DDECLTYPE_USHORT4N:
 794                     GL_EXTCALL(glVertexAttrib4NusvARB(instancedData[j], (GLushort *) ptr));
 795                     break;
 796
 797                 case WINED3DDECLTYPE_UDEC3:
 798                     FIXME("Unsure about WINED3DDECLTYPE_UDEC3\n");
 799                     /*glVertexAttrib3usvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 800                     break;
 801                 case WINED3DDECLTYPE_DEC3N:
 802                     FIXME("Unsure about WINED3DDECLTYPE_DEC3N\n");
 803                     /*glVertexAttrib3NusvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 804                     break;
 805
 806                 case WINED3DDECLTYPE_FLOAT16_2:
 807                     /* Are those 16 bit floats. C doesn't have a 16 bit float type. I could read the single bits and calculate a 4
 808                      * byte float according to the IEEE standard
 809                      */
 810                     if (GL_SUPPORT(NV_HALF_FLOAT)) {
 811                         GL_EXTCALL(glVertexAttrib2hvNV(instancedData[j], (GLhalfNV *)ptr));
 812                     } else {
 813                         FIXME("Unsupported WINED3DDECLTYPE_FLOAT16_2\n");
 814                     }
 815                     break;
 816                 case WINED3DDECLTYPE_FLOAT16_4:
 817                     if (GL_SUPPORT(NV_HALF_FLOAT)) {
 818                         GL_EXTCALL(glVertexAttrib4hvNV(instancedData[j], (GLhalfNV *)ptr));
 819                     } else {
 820                         FIXME("Unsupported WINED3DDECLTYPE_FLOAT16_4\n");
 821                     }
 822                     break;
 823
 824                 case WINED3DDECLTYPE_UNUSED:
 825                 default:
 826                     ERR("Unexpected declaration in instanced attributes\n");
 827                     break;
 828             }
 829         }
 830
 831         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 832                     (const char *)idxData+(idxSize * startIdx));
 833         checkGLcall("glDrawElements");
 834     }
 835 }
 836
 837 struct coords {
 838     int x, y, z;
 839 };
 840
 841 void blt_to_drawable(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *surface) {
 842     struct coords coords[4];
 843     int low_coord;
 844
 845     /* TODO: This could be supported for lazy unlocking */
 846     if(!(surface->Flags & SFLAG_INTEXTURE)) {
 847         /* It is ok at init to be nowhere */
 848         if(!(surface->Flags & SFLAG_INSYSMEM)) {
 849             ERR("Blitting surfaces from sysmem not supported yet\n");
 850         }
 851         return;
 852     }
 853
 854     ActivateContext(This, This->render_targets[0], CTXUSAGE_BLIT);
 855     ENTER_GL();
 856
 857     if(surface->glDescription.target == GL_TEXTURE_2D) {
 858         glBindTexture(GL_TEXTURE_2D, surface->glDescription.textureName);
 859         checkGLcall("GL_TEXTURE_2D, This->glDescription.textureName)");
 860
 861         coords[0].x = 0;    coords[0].y = 0;    coords[0].z = 0;
 862         coords[1].x = 0;    coords[1].y = 1;    coords[1].z = 0;
 863         coords[2].x = 1;    coords[2].y = 1;    coords[2].z = 0;
 864         coords[3].x = 1;    coords[3].y = 0;    coords[3].z = 0;
 865
 866         low_coord = 0;
 867     } else {
 868         /* Must be a cube map */
 869         glDisable(GL_TEXTURE_2D);
 870         checkGLcall("glDisable(GL_TEXTURE_2D)");
 871         glEnable(GL_TEXTURE_CUBE_MAP_ARB);
 872         checkGLcall("glEnable(surface->glDescription.target)");
 873         glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, surface->glDescription.textureName);
 874         checkGLcall("GL_TEXTURE_CUBE_MAP_ARB, This->glDescription.textureName)");
 875
 876         switch(surface->glDescription.target) {
 877             case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
 878                 coords[0].x =  1;   coords[0].y = -1;   coords[0].z =  1;
 879                 coords[1].x =  1;   coords[1].y =  1;   coords[1].z =  1;
 880                 coords[2].x =  1;   coords[2].y =  1;   coords[2].z = -1;
 881                 coords[3].x =  1;   coords[3].y = -1;   coords[3].z = -1;
 882                 break;
 883
 884             case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
 885                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 886                 coords[1].x = -1;   coords[1].y =  1;   coords[1].z =  1;
 887                 coords[2].x = -1;   coords[2].y =  1;   coords[2].z = -1;
 888                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 889                 break;
 890
 891             case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
 892                 coords[0].x = -1;   coords[0].y =  1;   coords[0].z =  1;
 893                 coords[1].x =  1;   coords[1].y =  1;   coords[1].z =  1;
 894                 coords[2].x =  1;   coords[2].y =  1;   coords[2].z = -1;
 895                 coords[3].x = -1;   coords[3].y =  1;   coords[3].z = -1;
 896                 break;
 897
 898             case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
 899                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 900                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z =  1;
 901                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z = -1;
 902                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 903                 break;
 904
 905             case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
 906                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 907                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z =  1;
 908                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z =  1;
 909                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z =  1;
 910                 break;
 911
 912             case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
 913                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z = -1;
 914                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z = -1;
 915                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z = -1;
 916                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 917
 918             default:
 919                 ERR("Unexpected texture target\n");
 920                 LEAVE_GL();
 921                 return;
 922         }
 923
 924         low_coord = -1;
 925     }
 926
 927     if(This->render_offscreen) {
 928         coords[0].y = coords[0].y == 1 ? low_coord : 1;
 929         coords[1].y = coords[1].y == 1 ? low_coord : 1;
 930         coords[2].y = coords[2].y == 1 ? low_coord : 1;
 931         coords[3].y = coords[3].y == 1 ? low_coord : 1;
 932     }
 933
 934     glBegin(GL_QUADS);
 935         glTexCoord3iv((GLint *) &coords[0]);
 936         glVertex2i(0, 0);
 937
 938         glTexCoord3iv((GLint *) &coords[1]);
 939         glVertex2i(0, surface->pow2Height);
 940
 941         glTexCoord3iv((GLint *) &coords[2]);
 942         glVertex2i(surface->pow2Width, surface->pow2Height);
 943
 944         glTexCoord3iv((GLint *) &coords[3]);
 945         glVertex2i(surface->pow2Width, 0);
 946     glEnd();
 947     checkGLcall("glEnd");
 948
 949     if(surface->glDescription.target != GL_TEXTURE_2D) {
 950         glEnable(GL_TEXTURE_2D);
 951         checkGLcall("glEnable(GL_TEXTURE_2D)");
 952         glDisable(GL_TEXTURE_CUBE_MAP_ARB);
 953         checkGLcall("glDisable(GL_TEXTURE_CUBE_MAP_ARB)");
 954     }
 955     LEAVE_GL();
 956 }
 957
 958 /* Routine common to the draw primitive and draw indexed primitive routines */
 959 void drawPrimitive(IWineD3DDevice *iface,
 960                    int PrimitiveType,
 961                    long NumPrimitives,
 962                    /* for Indexed: */
 963                    long  StartVertexIndex,
 964                    UINT  numberOfVertices,
 965                    long  StartIdx,
 966                    short idxSize,
 967                    const void *idxData,
 968                    int   minIndex) {
 969
 970     IWineD3DDeviceImpl           *This = (IWineD3DDeviceImpl *)iface;
 971     IWineD3DSwapChain            *swapchain;
 972     IWineD3DBaseTexture          *texture = NULL;
 973     IWineD3DSurfaceImpl          *target;
 974     int i;
 975
 976     /* Signals other modules that a drawing is in progress and the stateblock finalized */
 977     This->isInDraw = TRUE;
 978
 979     /* Invalidate the back buffer memory so LockRect will read it the next time */
 980     for(i = 0; i < GL_LIMITS(buffers); i++) {
 981         target = (IWineD3DSurfaceImpl *) This->render_targets[i];
 982
 983         /* TODO: Only do all that if we're going to change anything
 984          * Texture container dirtification does not work quite right yet
 985          */
 986         if(target /*&& target->Flags & (SFLAG_INTEXTURE | SFLAG_INSYSMEM)*/) {
 987             swapchain = NULL;
 988             texture = NULL;
 989
 990             if(i == 0) {
 991                 IWineD3DSurface_GetContainer((IWineD3DSurface *) target, &IID_IWineD3DSwapChain, (void **)&swapchain);
 992
 993                 /* Need the surface in the drawable! */
 994                 if(!(target->Flags & SFLAG_INDRAWABLE) && (swapchain || wined3d_settings.offscreen_rendering_mode != ORM_FBO)) {
 995                     blt_to_drawable(This, target);
 996                 }
 997
 998                 if(swapchain) {
 999                     /* Onscreen target. Invalidate system memory copy and texture copy */
1000                     target->Flags &= ~(SFLAG_INSYSMEM | SFLAG_INTEXTURE);
1001                     target->Flags |= SFLAG_INDRAWABLE;
1002                     IWineD3DSwapChain_Release(swapchain);
1003                 } else if(wined3d_settings.offscreen_rendering_mode != ORM_FBO) {
1004                     /* Non-FBO target: Invalidate system copy, texture copy and dirtify the container */
1005                     IWineD3DSurface_GetContainer((IWineD3DSurface *) target, &IID_IWineD3DBaseTexture, (void **)&texture);
1006
1007                     if(texture) {
1008                         IWineD3DBaseTexture_SetDirty(texture, TRUE);
1009                         IWineD3DTexture_Release(texture);
1010                     }
1011
1012                     target->Flags &= ~(SFLAG_INSYSMEM | SFLAG_INTEXTURE);
1013                     target->Flags |= SFLAG_INDRAWABLE;
1014                 } else {
1015                     /* FBO offscreen target. Invalidate system memory copy */
1016                     target->Flags &= ~SFLAG_INSYSMEM;
1017                 }
1018             } else {
1019                 /* Must be an fbo render target */
1020                 target->Flags &= ~SFLAG_INSYSMEM;
1021                 target->Flags |=  SFLAG_INTEXTURE;
1022             }
1023         }
1024     }
1025
1026     /* Ok, we will be updating the screen from here onwards so grab the lock */
1027
1028     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO) {
1029         ENTER_GL();
1030         apply_fbo_state(iface);
1031         LEAVE_GL();
1032     }
1033
1034     ActivateContext(This, This->render_targets[0], CTXUSAGE_DRAWPRIM);
1035     ENTER_GL();
1036
1037     if (This->depth_copy_state == WINED3D_DCS_COPY) {
1038         depth_copy(iface);
1039     }
1040     This->depth_copy_state = WINED3D_DCS_INITIAL;
1041
1042     {
1043         GLenum glPrimType;
1044         BOOL emulation = FALSE;
1045         WineDirect3DVertexStridedData *strided = &This->strided_streams;
1046         WineDirect3DVertexStridedData stridedlcl;
1047         /* Ok, Work out which primitive is requested and how many vertexes that
1048            will be                                                              */
1049         UINT calculatedNumberOfindices = primitiveToGl(PrimitiveType, NumPrimitives, &glPrimType);
1050         if (numberOfVertices == 0 )
1051             numberOfVertices = calculatedNumberOfindices;
1052
1053         if(!This->strided_streams.u.s.position_transformed && !use_vs(This)) {
1054             if(This->activeContext->num_untracked_materials &&
1055                This->stateBlock->renderState[WINED3DRS_LIGHTING]) {
1056                 IWineD3DVertexBufferImpl *vb;
1057
1058                 FIXME("Using software emulation because not all material properties could be tracked\n");
1059                 emulation = TRUE;
1060
1061                 strided = &stridedlcl;
1062                 memcpy(&stridedlcl, &This->strided_streams, sizeof(stridedlcl));
1063
1064 #define FIXVBO(type) \
1065 if(stridedlcl.u.s.type.VBO) { \
1066     vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[stridedlcl.u.s.type.streamNo]; \
1067     stridedlcl.u.s.type.VBO = 0; \
1068     stridedlcl.u.s.type.lpData = (BYTE *) ((unsigned long) stridedlcl.u.s.type.lpData + (unsigned long) vb->resource.allocatedMemory); \
1069 }
1070                 FIXVBO(position);
1071                 FIXVBO(blendWeights);
1072                 FIXVBO(blendMatrixIndices);
1073                 FIXVBO(normal);
1074                 FIXVBO(pSize);
1075                 FIXVBO(diffuse);
1076                 FIXVBO(specular);
1077                 for(i = 0; i < WINED3DDP_MAXTEXCOORD; i++) FIXVBO(texCoords[i]);
1078                 FIXVBO(position2);
1079                 FIXVBO(normal2);
1080                 FIXVBO(tangent);
1081                 FIXVBO(binormal);
1082                 FIXVBO(tessFactor);
1083                 FIXVBO(fog);
1084                 FIXVBO(depth);
1085                 FIXVBO(sample);
1086 #undef FIXVBO
1087             }
1088         }
1089
1090         if (This->useDrawStridedSlow || emulation) {
1091             /* Immediate mode drawing */
1092             drawStridedSlow(iface, strided, calculatedNumberOfindices,
1093                             glPrimType, idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1094         } else if(This->instancedDraw) {
1095             /* Instancing emulation with mixing immediate mode and arrays */
1096             drawStridedInstanced(iface, &This->strided_streams, calculatedNumberOfindices, glPrimType,
1097                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1098         } else {
1099             /* Simple array draw call */
1100             drawStridedFast(iface, calculatedNumberOfindices, glPrimType,
1101                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1102         }
1103     }
1104
1105     /* Finshed updating the screen, restore lock */
1106     LEAVE_GL();
1107     TRACE("Done all gl drawing\n");
1108
1109     /* Diagnostics */
1110 #ifdef SHOW_FRAME_MAKEUP
1111     {
1112         static long int primCounter = 0;
1113         /* NOTE: set primCounter to the value reported by drawprim
1114            before you want to to write frame makeup to /tmp */
1115         if (primCounter >= 0) {
1116             WINED3DLOCKED_RECT r;
1117             char buffer[80];
1118             IWineD3DSurface_LockRect(This->renderTarget, &r, NULL, WINED3DLOCK_READONLY);
1119             sprintf(buffer, "/tmp/backbuffer_%d.tga", primCounter);
1120             TRACE("Saving screenshot %s\n", buffer);
1121             IWineD3DSurface_SaveSnapshot(This->renderTarget, buffer);
1122             IWineD3DSurface_UnlockRect(This->renderTarget);
1123
1124 #ifdef SHOW_TEXTURE_MAKEUP
1125            {
1126             IWineD3DSurface *pSur;
1127             int textureNo;
1128             for (textureNo = 0; textureNo < MAX_COMBINED_SAMPLERS; ++textureNo) {
1129                 if (This->stateBlock->textures[textureNo] != NULL) {
1130                     sprintf(buffer, "/tmp/texture_%p_%d_%d.tga", This->stateBlock->textures[textureNo], primCounter, textureNo);
1131                     TRACE("Saving texture %s\n", buffer);
1132                     if (IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]) == WINED3DRTYPE_TEXTURE) {
1133                             IWineD3DTexture_GetSurfaceLevel((IWineD3DTexture *)This->stateBlock->textures[textureNo], 0, &pSur);
1134                             IWineD3DSurface_SaveSnapshot(pSur, buffer);
1135                             IWineD3DSurface_Release(pSur);
1136                     } else  {
1137                         FIXME("base Texture isn't of type texture %d\n", IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]));
1138                     }
1139                 }
1140             }
1141            }
1142 #endif
1143         }
1144         TRACE("drawprim #%d\n", primCounter);
1145         ++primCounter;
1146     }
1147 #endif
1148
1149     /* Control goes back to the device, stateblock values may change again */
1150     This->isInDraw = FALSE;
1151 }
1152
1153 static void normalize_normal(float *n) {
1154     float length = n[0] * n[0] + n[1] * n[1] + n[2] * n[2];
1155     if(length == 0.0) return;
1156     length = sqrt(length);
1157     n[0] = n[0] / length;
1158     n[1] = n[1] / length;
1159     n[2] = n[2] / length;
1160 }
1161
1162 /* Tesselates a high order rectangular patch into single triangles using gl evaluators
1163  *
1164  * The problem is that OpenGL does not offer a direct way to return the tesselated primitives,
1165  * and they can't be sent off for rendering directly either. Tesselating is slow, so we want
1166  * to chache the patches in a vertex buffer. But more importantly, gl can't bind generated
1167  * attributes to numbered shader attributes, so we have to store them and rebind them as needed
1168  * in drawprim.
1169  *
1170  * To read back, the opengl feedback mode is used. This creates a proplem because we want
1171  * untransformed, unlit vertices, but feedback runs everything through transform and lighting.
1172  * Thus disable lighting and set identity matrices to get unmodified colors and positions.
1173  * To overcome clipping find the biggest x, y and z values of the vertices in the patch and scale
1174  * them to [-1.0;+1.0] and set the viewport up to scale them back.
1175  *
1176  * Normals are more tricky: Draw white vertices with 3 directional lights, and calculate the
1177  * resulting colors back to the normals.
1178  *
1179  * NOTE: This function activates a context for blitting, modifies matrices & viewport, but
1180  * does not restore it because normally a draw follows immediately afterwards. The caller is
1181  * responsible of taking care that either the gl states are restored, or the context activated
1182  * for drawing to reset the lastWasBlit flag.
1183  */
1184 HRESULT tesselate_rectpatch(IWineD3DDeviceImpl *This,
1185                             struct WineD3DRectPatch *patch) {
1186     unsigned int i, j, num_quads, out_vertex_size, buffer_size, d3d_out_vertex_size;
1187     float max_x = 0.0, max_y = 0.0, max_z = 0.0, neg_z = 0.0;
1188     WineDirect3DVertexStridedData strided;
1189     BYTE *data;
1190     WINED3DRECTPATCH_INFO *info = &patch->RectPatchInfo;
1191     DWORD vtxStride;
1192     GLenum feedback_type;
1193     GLfloat *feedbuffer;
1194
1195     /* First, locate the position data. This is provided in a vertex buffer in the stateblock.
1196      * Beware of vbos
1197      */
1198     memset(&strided, 0, sizeof(strided));
1199     primitiveDeclarationConvertToStridedData((IWineD3DDevice *) This, FALSE, &strided, NULL);
1200     if(strided.u.s.position.VBO) {
1201         IWineD3DVertexBufferImpl *vb;
1202         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[strided.u.s.position.streamNo];
1203         strided.u.s.position.lpData = (BYTE *) ((unsigned long) strided.u.s.position.lpData +
1204                                                 (unsigned long) vb->resource.allocatedMemory);
1205     }
1206     vtxStride = strided.u.s.position.dwStride;
1207     data = strided.u.s.position.lpData +
1208            vtxStride * info->Stride * info->StartVertexOffsetHeight +
1209            vtxStride * info->StartVertexOffsetWidth;
1210
1211     /* Not entirely sure about what happens with transformed vertices */
1212     if(strided.u.s.position_transformed) {
1213         FIXME("Transformed position in rectpatch generation\n");
1214     }
1215     if(vtxStride % sizeof(GLfloat)) {
1216         /* glMap2f reads vertex sizes in GLfloats, the d3d stride is in bytes.
1217          * I don't see how the stride could not be a multiple of 4, but make sure
1218          * to check it
1219          */
1220         ERR("Vertex stride is not a multiple of sizeof(GLfloat)\n");
1221     }
1222     if(info->Basis != WINED3DBASIS_BEZIER) {
1223         FIXME("Basis is %s, how to handle this?\n", debug_d3dbasis(info->Basis));
1224     }
1225     if(info->Degree != WINED3DDEGREE_CUBIC) {
1226         FIXME("Degree is %s, how to handle this?\n", debug_d3ddegree(info->Degree));
1227     }
1228
1229     /* First, get the boundary cube of the input data */
1230     for(j = 0; j < info->Height; j++) {
1231         for(i = 0; i < info->Width; i++) {
1232             float *v = (float *) (data + vtxStride * i + vtxStride * info->Stride * j);
1233             if(fabs(v[0]) > max_x) max_x = fabs(v[0]);
1234             if(fabs(v[1]) > max_y) max_y = fabs(v[1]);
1235             if(fabs(v[2]) > max_z) max_z = fabs(v[2]);
1236             if(v[2] < neg_z) neg_z = v[2];
1237         }
1238     }
1239
1240     /* This needs some improvements in the vertex decl code */
1241     FIXME("Cannot find data to generate. Only generating position and normals\n");
1242     patch->has_normals = TRUE;
1243     patch->has_texcoords = FALSE;
1244
1245     /* Simply activate the context for blitting. This disables all the things we don't want and
1246      * takes care of dirtifying. Dirtifying is preferred over pushing / popping, since drawing the
1247      * patch (as opposed to normal draws) will most likely need different changes anyway
1248      */
1249     ActivateContext(This, This->lastActiveRenderTarget, CTXUSAGE_BLIT);
1250     ENTER_GL();
1251
1252     glMatrixMode(GL_PROJECTION);
1253     checkGLcall("glMatrixMode(GL_PROJECTION)");
1254     glLoadIdentity();
1255     checkGLcall("glLoadIndentity()");
1256     glScalef(1 / (max_x) , 1 / (max_y), max_z == 0 ? 1 : 1 / ( 2 * max_z));
1257     glTranslatef(0, 0, 0.5);
1258     checkGLcall("glScalef");
1259     glViewport(-max_x, -max_y, 2 * (max_x), 2 * (max_y));
1260     checkGLcall("glViewport");
1261
1262     /* Some states to take care of. If we're in wireframe opengl will produce lines, and confuse
1263      * our feedback buffer parser
1264      */
1265     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1266     checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
1267     IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_FILLMODE));
1268     if(patch->has_normals) {
1269         float black[4] = {0, 0, 0, 0};
1270         float red[4]   = {1, 0, 0, 0};
1271         float green[4] = {0, 1, 0, 0};
1272         float blue[4]  = {0, 0, 1, 0};
1273         float white[4] = {1, 1, 1, 1};
1274         glEnable(GL_LIGHTING);
1275         checkGLcall("glEnable(GL_LIGHTING)");
1276         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
1277         checkGLcall("glLightModel for MODEL_AMBIENT");
1278         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_AMBIENT));
1279
1280         for(i = 3; i < GL_LIMITS(lights); i++) {
1281             glDisable(GL_LIGHT0 + i);
1282             checkGLcall("glDisable(GL_LIGHT0 + i)");
1283             IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(i));
1284         }
1285
1286         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(0));
1287         glLightfv(GL_LIGHT0, GL_DIFFUSE, red);
1288         glLightfv(GL_LIGHT0, GL_SPECULAR, black);
1289         glLightfv(GL_LIGHT0, GL_AMBIENT, black);
1290         glLightfv(GL_LIGHT0, GL_POSITION, red);
1291         glEnable(GL_LIGHT0);
1292         checkGLcall("Setting up light 1\n");
1293         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(1));
1294         glLightfv(GL_LIGHT1, GL_DIFFUSE, green);
1295         glLightfv(GL_LIGHT1, GL_SPECULAR, black);
1296         glLightfv(GL_LIGHT1, GL_AMBIENT, black);
1297         glLightfv(GL_LIGHT1, GL_POSITION, green);
1298         glEnable(GL_LIGHT1);
1299         checkGLcall("Setting up light 2\n");
1300         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(2));
1301         glLightfv(GL_LIGHT2, GL_DIFFUSE, blue);
1302         glLightfv(GL_LIGHT2, GL_SPECULAR, black);
1303         glLightfv(GL_LIGHT2, GL_AMBIENT, black);
1304         glLightfv(GL_LIGHT2, GL_POSITION, blue);
1305         glEnable(GL_LIGHT2);
1306         checkGLcall("Setting up light 3\n");
1307
1308         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_MATERIAL);
1309         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_COLORVERTEX));
1310         glDisable(GL_COLOR_MATERIAL);
1311         glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, black);
1312         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
1313         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
1314         checkGLcall("Setting up materials\n");
1315     }
1316
1317     /* Enable the needed maps.
1318      * GL_MAP2_VERTEX_3 is needed for positional data.
1319      * GL_AUTO_NORMAL to generate normals from the position. Do not use GL_MAP2_NORMAL.
1320      * GL_MAP2_TEXTURE_COORD_4 for texture coords
1321      */
1322     num_quads = ceilf(patch->numSegs[0]) * ceilf(patch->numSegs[1]);
1323     out_vertex_size = 3 /* position */;
1324     d3d_out_vertex_size = 3;
1325     glEnable(GL_MAP2_VERTEX_3);
1326     if(patch->has_normals && patch->has_texcoords) {
1327         FIXME("Texcoords not handled yet\n");
1328         feedback_type = GL_3D_COLOR_TEXTURE;
1329         out_vertex_size += 8;
1330         d3d_out_vertex_size += 7;
1331         glEnable(GL_AUTO_NORMAL);
1332         glEnable(GL_MAP2_TEXTURE_COORD_4);
1333     } else if(patch->has_texcoords) {
1334         FIXME("Texcoords not handled yet\n");
1335         feedback_type = GL_3D_COLOR_TEXTURE;
1336         out_vertex_size += 7;
1337         d3d_out_vertex_size += 4;
1338         glEnable(GL_MAP2_TEXTURE_COORD_4);
1339     } else if(patch->has_normals) {
1340         feedback_type = GL_3D_COLOR;
1341         out_vertex_size += 4;
1342         d3d_out_vertex_size += 3;
1343         glEnable(GL_AUTO_NORMAL);
1344     } else {
1345         feedback_type = GL_3D;
1346     }
1347     checkGLcall("glEnable vertex attrib generation");
1348
1349     buffer_size = num_quads * out_vertex_size * 2 /* triangle list */ * 3 /* verts per tri */
1350                    + 4 * num_quads /* 2 triangle markers per quad + num verts in tri */;
1351     feedbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, buffer_size * sizeof(float) * 8);
1352
1353     glMap2f(GL_MAP2_VERTEX_3,
1354             0, 1, vtxStride / sizeof(float), info->Width,
1355             0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1356             (float *) data);
1357     checkGLcall("glMap2f");
1358     if(patch->has_texcoords) {
1359         glMap2f(GL_MAP2_TEXTURE_COORD_4,
1360                 0, 1, vtxStride / sizeof(float), info->Width,
1361                 0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1362                 (float *) data);
1363         checkGLcall("glMap2f");
1364     }
1365     glMapGrid2f(ceilf(patch->numSegs[0]), 0.0, 1.0, ceilf(patch->numSegs[1]), 0.0, 1.0);
1366     checkGLcall("glMapGrid2f");
1367
1368     glFeedbackBuffer(buffer_size * 2, feedback_type, feedbuffer);
1369     checkGLcall("glFeedbackBuffer");
1370     glRenderMode(GL_FEEDBACK);
1371
1372     glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1373     checkGLcall("glEvalMesh2\n");
1374
1375     i = glRenderMode(GL_RENDER);
1376     if(i == -1) {
1377         ERR("Feedback failed. Expected %d elements back\n", buffer_size);
1378         Sleep(10000);
1379         HeapFree(GetProcessHeap(), 0, feedbuffer);
1380         return WINED3DERR_DRIVERINTERNALERROR;
1381     } else if(i != buffer_size) {
1382         ERR("Unexpected amount of elements returned. Expected %d, got %d\n", buffer_size, i);
1383         Sleep(10000);
1384         HeapFree(GetProcessHeap(), 0, feedbuffer);
1385         return WINED3DERR_DRIVERINTERNALERROR;
1386     } else {
1387         TRACE("Got %d elements as expected\n", i);
1388     }
1389
1390     HeapFree(GetProcessHeap(), 0, patch->mem);
1391     patch->mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_quads * 6 * d3d_out_vertex_size * sizeof(float) * 8);
1392     i = 0;
1393     for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1394         if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1395             ERR("Unexpected token: %f\n", feedbuffer[j]);
1396             continue;
1397         }
1398         if(feedbuffer[j + 1] != 3) {
1399             ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1400             continue;
1401         }
1402         /* Somehow there are different ideas about back / front facing, so fix up the
1403          * vertex order
1404          */
1405         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 2 + 2]; /* x, triangle 2 */
1406         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 2 + 3]; /* y, triangle 2 */
1407         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 2 + 4] - 0.5) * 4 * max_z; /* z, triangle 3 */
1408         if(patch->has_normals) {
1409             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 2 + 5];
1410             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 2 + 6];
1411             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 2 + 7];
1412         }
1413         i += d3d_out_vertex_size;
1414
1415         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 1 + 2]; /* x, triangle 2 */
1416         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 1 + 3]; /* y, triangle 2 */
1417         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 1 + 4] - 0.5) * 4 * max_z; /* z, triangle 2 */
1418         if(patch->has_normals) {
1419             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 1 + 5];
1420             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 1 + 6];
1421             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 1 + 7];
1422         }
1423         i += d3d_out_vertex_size;
1424
1425         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 0 + 2]; /* x, triangle 1 */
1426         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 0 + 3]; /* y, triangle 1 */
1427         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 0 + 4] - 0.5) * 4 * max_z; /* z, triangle 1 */
1428         if(patch->has_normals) {
1429             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 0 + 5];
1430             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 0 + 6];
1431             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 0 + 7];
1432         }
1433         i += d3d_out_vertex_size;
1434     }
1435
1436     if(patch->has_normals) {
1437         /* Now do the same with reverse light directions */
1438         float x[4] = {-1,  0,  0, 0};
1439         float y[4] = { 0, -1,  0, 0};
1440         float z[4] = { 0,  0, -1, 0};
1441         glLightfv(GL_LIGHT0, GL_POSITION, x);
1442         glLightfv(GL_LIGHT1, GL_POSITION, y);
1443         glLightfv(GL_LIGHT2, GL_POSITION, z);
1444         checkGLcall("Setting up reverse light directions\n");
1445
1446         glRenderMode(GL_FEEDBACK);
1447         checkGLcall("glRenderMode(GL_FEEDBACK)");
1448         glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1449         checkGLcall("glEvalMesh2\n");
1450         i = glRenderMode(GL_RENDER);
1451         checkGLcall("glRenderMode(GL_RENDER)");
1452
1453         i = 0;
1454         for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1455             if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1456                 ERR("Unexpected token: %f\n", feedbuffer[j]);
1457                 continue;
1458             }
1459             if(feedbuffer[j + 1] != 3) {
1460                 ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1461                 continue;
1462             }
1463             if(patch->mem[i + 3] == 0.0)
1464                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 2 + 5];
1465             if(patch->mem[i + 4] == 0.0)
1466                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 2 + 6];
1467             if(patch->mem[i + 5] == 0.0)
1468                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 2 + 7];
1469             normalize_normal(patch->mem + i + 3);
1470             i += d3d_out_vertex_size;
1471
1472             if(patch->mem[i + 3] == 0.0)
1473                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 1 + 5];
1474             if(patch->mem[i + 4] == 0.0)
1475                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 1 + 6];
1476             if(patch->mem[i + 5] == 0.0)
1477                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 1 + 7];
1478             normalize_normal(patch->mem + i + 3);
1479             i += d3d_out_vertex_size;
1480
1481             if(patch->mem[i + 3] == 0.0)
1482                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 0 + 5];
1483             if(patch->mem[i + 4] == 0.0)
1484                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 0 + 6];
1485             if(patch->mem[i + 5] == 0.0)
1486                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 0 + 7];
1487             normalize_normal(patch->mem + i + 3);
1488             i += d3d_out_vertex_size;
1489         }
1490     }
1491
1492     glDisable(GL_MAP2_VERTEX_3);
1493     glDisable(GL_AUTO_NORMAL);
1494     glDisable(GL_MAP2_NORMAL);
1495     glDisable(GL_MAP2_TEXTURE_COORD_4);
1496     checkGLcall("glDisable vertex attrib generation");
1497     LEAVE_GL();
1498
1499     HeapFree(GetProcessHeap(), 0, feedbuffer);
1500
1501     vtxStride = 3 * sizeof(float);
1502     if(patch->has_normals) {
1503         vtxStride += 3 * sizeof(float);
1504     }
1505     if(patch->has_texcoords) {
1506         vtxStride += 4 * sizeof(float);
1507     }
1508     memset(&patch->strided, 0, sizeof(&patch->strided));
1509     patch->strided.u.s.position.lpData = (BYTE *) patch->mem;
1510     patch->strided.u.s.position.dwStride = vtxStride;
1511     patch->strided.u.s.position.dwType = WINED3DDECLTYPE_FLOAT3;
1512     patch->strided.u.s.position.streamNo = 255;
1513
1514     if(patch->has_normals) {
1515         patch->strided.u.s.normal.lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1516         patch->strided.u.s.normal.dwStride = vtxStride;
1517         patch->strided.u.s.normal.dwType = WINED3DDECLTYPE_FLOAT3;
1518         patch->strided.u.s.normal.streamNo = 255;
1519     }
1520     if(patch->has_texcoords) {
1521         patch->strided.u.s.texCoords[0].lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1522         if(patch->has_normals) {
1523             patch->strided.u.s.texCoords[0].lpData += 3 * sizeof(float);
1524         }
1525         patch->strided.u.s.texCoords[0].dwStride = vtxStride;
1526         patch->strided.u.s.texCoords[0].dwType = WINED3DDECLTYPE_FLOAT4;
1527         /* MAX_STREAMS index points to an unused element in stateblock->streamOffsets which
1528          * always remains set to 0. Windows uses stream 255 here, but this is not visible to the
1529          * application.
1530          */
1531         patch->strided.u.s.texCoords[0].streamNo = MAX_STREAMS;
1532     }
1533
1534     return WINED3D_OK;
1535 }