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, 2008 Henri Verbeet
   9  * Copyright 2007-2008 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 #include <math.h>
  34
  35 /* Issues the glBegin call for gl given the primitive type and count */
  36 static DWORD primitiveToGl(WINED3DPRIMITIVETYPE PrimitiveType,
  37                     DWORD            NumPrimitives,
  38                     GLenum          *primType)
  39 {
  40     DWORD   NumVertexes = NumPrimitives;
  41
  42     switch (PrimitiveType) {
  43     case WINED3DPT_POINTLIST:
  44         TRACE("POINTS\n");
  45         *primType   = GL_POINTS;
  46         NumVertexes = NumPrimitives;
  47         break;
  48
  49     case WINED3DPT_LINELIST:
  50         TRACE("LINES\n");
  51         *primType   = GL_LINES;
  52         NumVertexes = NumPrimitives * 2;
  53         break;
  54
  55     case WINED3DPT_LINESTRIP:
  56         TRACE("LINE_STRIP\n");
  57         *primType   = GL_LINE_STRIP;
  58         NumVertexes = NumPrimitives + 1;
  59         break;
  60
  61     case WINED3DPT_TRIANGLELIST:
  62         TRACE("TRIANGLES\n");
  63         *primType   = GL_TRIANGLES;
  64         NumVertexes = NumPrimitives * 3;
  65         break;
  66
  67     case WINED3DPT_TRIANGLESTRIP:
  68         TRACE("TRIANGLE_STRIP\n");
  69         *primType   = GL_TRIANGLE_STRIP;
  70         NumVertexes = NumPrimitives + 2;
  71         break;
  72
  73     case WINED3DPT_TRIANGLEFAN:
  74         TRACE("TRIANGLE_FAN\n");
  75         *primType   = GL_TRIANGLE_FAN;
  76         NumVertexes = NumPrimitives + 2;
  77         break;
  78
  79     default:
  80         FIXME("Unhandled primitive\n");
  81         *primType    = GL_POINTS;
  82         break;
  83     }
  84     return NumVertexes;
  85 }
  86
  87 static BOOL fixed_get_input(
  88     BYTE usage, BYTE usage_idx,
  89     unsigned int* regnum) {
  90
  91     *regnum = -1;
  92
  93     /* Those positions must have the order in the
  94      * named part of the strided data */
  95
  96     if ((usage == WINED3DDECLUSAGE_POSITION || usage == WINED3DDECLUSAGE_POSITIONT) && usage_idx == 0)
  97         *regnum = 0;
  98     else if (usage == WINED3DDECLUSAGE_BLENDWEIGHT && usage_idx == 0)
  99         *regnum = 1;
 100     else if (usage == WINED3DDECLUSAGE_BLENDINDICES && usage_idx == 0)
 101         *regnum = 2;
 102     else if (usage == WINED3DDECLUSAGE_NORMAL && usage_idx == 0)
 103         *regnum = 3;
 104     else if (usage == WINED3DDECLUSAGE_PSIZE && usage_idx == 0)
 105         *regnum = 4;
 106     else if (usage == WINED3DDECLUSAGE_COLOR && usage_idx == 0)
 107         *regnum = 5;
 108     else if (usage == WINED3DDECLUSAGE_COLOR && usage_idx == 1)
 109         *regnum = 6;
 110     else if (usage == WINED3DDECLUSAGE_TEXCOORD && usage_idx < WINED3DDP_MAXTEXCOORD)
 111         *regnum = 7 + usage_idx;
 112     else if ((usage == WINED3DDECLUSAGE_POSITION || usage == WINED3DDECLUSAGE_POSITIONT) && usage_idx == 1)
 113         *regnum = 7 + WINED3DDP_MAXTEXCOORD;
 114     else if (usage == WINED3DDECLUSAGE_NORMAL && usage_idx == 1)
 115         *regnum = 8 + WINED3DDP_MAXTEXCOORD;
 116     else if (usage == WINED3DDECLUSAGE_TANGENT && usage_idx == 0)
 117         *regnum = 9 + WINED3DDP_MAXTEXCOORD;
 118     else if (usage == WINED3DDECLUSAGE_BINORMAL && usage_idx == 0)
 119         *regnum = 10 + WINED3DDP_MAXTEXCOORD;
 120     else if (usage == WINED3DDECLUSAGE_TESSFACTOR && usage_idx == 0)
 121         *regnum = 11 + WINED3DDP_MAXTEXCOORD;
 122     else if (usage == WINED3DDECLUSAGE_FOG && usage_idx == 0)
 123         *regnum = 12 + WINED3DDP_MAXTEXCOORD;
 124     else if (usage == WINED3DDECLUSAGE_DEPTH && usage_idx == 0)
 125         *regnum = 13 + WINED3DDP_MAXTEXCOORD;
 126     else if (usage == WINED3DDECLUSAGE_SAMPLE && usage_idx == 0)
 127         *regnum = 14 + WINED3DDP_MAXTEXCOORD;
 128
 129     if (*regnum == -1) {
 130         FIXME("Unsupported input stream [usage=%s, usage_idx=%u]\n",
 131             debug_d3ddeclusage(usage), usage_idx);
 132         return FALSE;
 133     }
 134     return TRUE;
 135 }
 136
 137 void primitiveDeclarationConvertToStridedData(
 138      IWineD3DDevice *iface,
 139      BOOL useVertexShaderFunction,
 140      WineDirect3DVertexStridedData *strided,
 141      BOOL *fixup) {
 142
 143      /* We need to deal with frequency data!*/
 144
 145     BYTE  *data    = NULL;
 146     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 147     IWineD3DVertexDeclarationImpl* vertexDeclaration = (IWineD3DVertexDeclarationImpl *)This->stateBlock->vertexDecl;
 148     int i;
 149     WINED3DVERTEXELEMENT *element;
 150     DWORD stride;
 151     DWORD numPreloadStreams = This->stateBlock->streamIsUP ? 0 : vertexDeclaration->num_streams;
 152     DWORD *streams = vertexDeclaration->streams;
 153
 154     /* Check for transformed vertices, disable vertex shader if present */
 155     strided->u.s.position_transformed = vertexDeclaration->position_transformed;
 156     if(vertexDeclaration->position_transformed) {
 157         useVertexShaderFunction = FALSE;
 158     }
 159
 160     /* Translate the declaration into strided data */
 161     for (i = 0 ; i < vertexDeclaration->declarationWNumElements - 1; ++i) {
 162         GLint streamVBO = 0;
 163         BOOL stride_used;
 164         unsigned int idx;
 165
 166         element = vertexDeclaration->pDeclarationWine + i;
 167         TRACE("%p Element %p (%d of %d)\n", vertexDeclaration->pDeclarationWine,
 168             element,  i + 1, vertexDeclaration->declarationWNumElements - 1);
 169
 170         if (This->stateBlock->streamSource[element->Stream] == NULL)
 171             continue;
 172
 173         stride  = This->stateBlock->streamStride[element->Stream];
 174         if (This->stateBlock->streamIsUP) {
 175             TRACE("Stream is up %d, %p\n", element->Stream, This->stateBlock->streamSource[element->Stream]);
 176             streamVBO = 0;
 177             data    = (BYTE *)This->stateBlock->streamSource[element->Stream];
 178         } else {
 179             TRACE("Stream isn't up %d, %p\n", element->Stream, This->stateBlock->streamSource[element->Stream]);
 180             data    = IWineD3DVertexBufferImpl_GetMemory(This->stateBlock->streamSource[element->Stream], 0, &streamVBO);
 181
 182             /* Can't use vbo's if the base vertex index is negative. OpenGL doesn't accept negative offsets
 183              * (or rather offsets bigger than the vbo, because the pointer is unsigned), so use system memory
 184              * sources. In most sane cases the pointer - offset will still be > 0, otherwise it will wrap
 185              * around to some big value. Hope that with the indices, the driver wraps it back internally. If
 186              * not, drawStridedSlow is needed, including a vertex buffer path.
 187              */
 188             if(This->stateBlock->loadBaseVertexIndex < 0) {
 189                 WARN("loadBaseVertexIndex is < 0 (%d), not using vbos\n", This->stateBlock->loadBaseVertexIndex);
 190                 streamVBO = 0;
 191                 data = ((IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[element->Stream])->resource.allocatedMemory;
 192                 if((UINT_PTR)data < -This->stateBlock->loadBaseVertexIndex * stride) {
 193                     FIXME("System memory vertex data load offset is negative!\n");
 194                 }
 195             }
 196
 197             if(fixup) {
 198                 if( streamVBO != 0) *fixup = TRUE;
 199                 else if(*fixup && !useVertexShaderFunction &&
 200                        (element->Usage == WINED3DDECLUSAGE_COLOR ||
 201                         element->Usage == WINED3DDECLUSAGE_POSITIONT)) {
 202                     static BOOL warned = FALSE;
 203                     if(!warned) {
 204                         /* This may be bad with the fixed function pipeline */
 205                         FIXME("Missing vbo streams with unfixed colors or transformed position, expect problems\n");
 206                         warned = TRUE;
 207                     }
 208                 }
 209             }
 210         }
 211         data += element->Offset;
 212
 213         TRACE("Offset %d Stream %d UsageIndex %d\n", element->Offset, element->Stream, element->UsageIndex);
 214
 215         if (useVertexShaderFunction)
 216             stride_used = vshader_get_input(This->stateBlock->vertexShader,
 217                 element->Usage, element->UsageIndex, &idx);
 218         else
 219             stride_used = fixed_get_input(element->Usage, element->UsageIndex, &idx);
 220
 221         if (stride_used) {
 222             TRACE("Loaded %s array %u [usage=%s, usage_idx=%u, "
 223                     "stream=%u, offset=%u, stride=%u, type=%s, VBO=%u]\n",
 224                     useVertexShaderFunction? "shader": "fixed function", idx,
 225                     debug_d3ddeclusage(element->Usage), element->UsageIndex,
 226                     element->Stream, element->Offset, stride, debug_d3ddecltype(element->Type), streamVBO);
 227
 228             strided->u.input[idx].lpData = data;
 229             strided->u.input[idx].dwType = element->Type;
 230             strided->u.input[idx].dwStride = stride;
 231             strided->u.input[idx].VBO = streamVBO;
 232             strided->u.input[idx].streamNo = element->Stream;
 233         }
 234     }
 235     /* Now call PreLoad on all the vertex buffers. In the very rare case
 236      * that the buffers stopps converting PreLoad will dirtify the VDECL again.
 237      * The vertex buffer can now use the strided structure in the device instead of finding its
 238      * own again.
 239      *
 240      * NULL streams won't be recorded in the array, UP streams won't be either. A stream is only
 241      * once in there.
 242      */
 243     for(i=0; i < numPreloadStreams; i++) {
 244         IWineD3DVertexBuffer *vb = This->stateBlock->streamSource[streams[i]];
 245         if(vb) {
 246             IWineD3DVertexBuffer_PreLoad(vb);
 247         }
 248     }
 249 }
 250
 251 static void drawStridedFast(IWineD3DDevice *iface,UINT numberOfVertices, GLenum glPrimitiveType,
 252                      const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex) {
 253     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 254
 255     if (idxSize != 0 /* This crashes sometimes!*/) {
 256         TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 257         idxData = idxData == (void *)-1 ? NULL : idxData;
 258 #if 1
 259         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 260                      (const char *)idxData+(idxSize * startIdx));
 261         checkGLcall("glDrawElements");
 262 #else /* using drawRangeElements may be faster */
 263
 264         glDrawRangeElements(glPrimitiveType, minIndex, minIndex + numberOfVertices - 1, numberOfVertices,
 265                       idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 266                       (const char *)idxData+(idxSize * startIdx));
 267         checkGLcall("glDrawRangeElements");
 268 #endif
 269
 270     } else {
 271
 272         /* Note first is now zero as we shuffled along earlier */
 273         TRACE("(%p) : glDrawArrays(%x, 0, %d)\n", This, glPrimitiveType, numberOfVertices);
 274         glDrawArrays(glPrimitiveType, startVertex, numberOfVertices);
 275         checkGLcall("glDrawArrays");
 276
 277     }
 278
 279     return;
 280 }
 281
 282 /*
 283  * Actually draw using the supplied information.
 284  * Slower GL version which extracts info about each vertex in turn
 285  */
 286
 287 static void drawStridedSlow(IWineD3DDevice *iface, WineDirect3DVertexStridedData *sd,
 288                      UINT NumVertexes, GLenum glPrimType,
 289                      const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex) {
 290
 291     unsigned int               textureNo    = 0;
 292     const WORD                *pIdxBufS     = NULL;
 293     const DWORD               *pIdxBufL     = NULL;
 294     LONG                       vx_index;
 295     DWORD diffuseColor = 0xFFFFFFFF;       /* Diffuse Color              */
 296     DWORD specularColor = 0;               /* Specular Color             */
 297     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 298     UINT *streamOffset = This->stateBlock->streamOffset;
 299     long                      SkipnStrides = startVertex + This->stateBlock->loadBaseVertexIndex;
 300     BOOL                      pixelShader = use_ps(This);
 301
 302     BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
 303     BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
 304
 305     TRACE("Using slow vertex array code\n");
 306
 307     /* Variable Initialization */
 308     if (idxSize != 0) {
 309         /* Immediate mode drawing can't make use of indices in a vbo - get the data from the index buffer.
 310          * If the index buffer has no vbo(not supported or other reason), or with user pointer drawing
 311          * idxData will be != NULL
 312          */
 313         if(idxData == NULL) {
 314             idxData = ((IWineD3DIndexBufferImpl *) This->stateBlock->pIndexData)->resource.allocatedMemory;
 315         }
 316
 317         if (idxSize == 2) pIdxBufS = (const WORD *) idxData;
 318         else pIdxBufL = (const DWORD *) idxData;
 319     }
 320
 321     /* Adding the stream offset once is cheaper than doing it every iteration. Do not modify the strided data, it is a pointer
 322      * to the strided Data in the device and might be needed intact on the next draw
 323      */
 324     for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 325         if(sd->u.s.texCoords[textureNo].lpData) {
 326             texCoords[textureNo] = sd->u.s.texCoords[textureNo].lpData + streamOffset[sd->u.s.texCoords[textureNo].streamNo];
 327         } else {
 328             texCoords[textureNo] = NULL;
 329         }
 330     }
 331     if(sd->u.s.diffuse.lpData) {
 332         diffuse = sd->u.s.diffuse.lpData + streamOffset[sd->u.s.diffuse.streamNo];
 333     }
 334     if(sd->u.s.specular.lpData) {
 335         specular = sd->u.s.specular.lpData + streamOffset[sd->u.s.specular.streamNo];
 336     }
 337     if(sd->u.s.normal.lpData) {
 338         normal = sd->u.s.normal.lpData + streamOffset[sd->u.s.normal.streamNo];
 339     }
 340     if(sd->u.s.position.lpData) {
 341         position = sd->u.s.position.lpData + streamOffset[sd->u.s.position.streamNo];
 342     }
 343
 344     /* The texture coordinate types are not so easy to map into a common function signature - we're
 345      * not using the vector functions here
 346      */
 347     if(FIXME_ON(d3d_draw)) {
 348         for (textureNo = 0; textureNo < GL_LIMITS(textures); ++textureNo) {
 349             DWORD type = sd->u.s.texCoords[textureNo].dwType;
 350             if (sd->u.s.texCoords[textureNo].lpData &&
 351                 type != WINED3DDECLTYPE_FLOAT1 &&
 352                 type != WINED3DDECLTYPE_FLOAT2 &&
 353                 type != WINED3DDECLTYPE_FLOAT3 &&
 354                 type != WINED3DDECLTYPE_FLOAT4) {
 355                 FIXME("Implement fixed function texture coordinates from %s\n", debug_d3ddecltype(type));
 356             }
 357         }
 358         if(specular && This->stateBlock->renderState[WINED3DRS_FOGENABLE] &&
 359            (This->stateBlock->renderState[WINED3DRS_FOGVERTEXMODE] == WINED3DFOG_NONE || sd->u.s.position_transformed )&&
 360            This->stateBlock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE) {
 361             if(GL_SUPPORT(EXT_FOG_COORD) && sd->u.s.specular.dwType != WINED3DDECLTYPE_D3DCOLOR) {
 362                 FIXME("Implement fog coordinates from %s\n", debug_d3ddecltype(sd->u.s.specular.dwType));
 363             }
 364         }
 365         if(This->activeContext->num_untracked_materials && sd->u.s.diffuse.dwType != WINED3DDECLTYPE_D3DCOLOR) {
 366             FIXME("Implement diffuse color tracking from %s\n", debug_d3ddecltype(sd->u.s.diffuse.dwType));
 367         }
 368     }
 369
 370     /* Start drawing in GL */
 371     VTRACE(("glBegin(%x)\n", glPrimType));
 372     glBegin(glPrimType);
 373
 374     /* Default settings for data that is not passed */
 375     if (sd->u.s.normal.lpData == NULL) {
 376         glNormal3f(0, 0, 0);
 377     }
 378     if(sd->u.s.diffuse.lpData == NULL) {
 379         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 380     }
 381     if(sd->u.s.specular.lpData == NULL) {
 382         if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 383             GL_EXTCALL(glSecondaryColor3fEXT)(0, 0, 0);
 384         }
 385     }
 386
 387     /* We shouldn't start this function if any VBO is involved. Should I put a safety check here?
 388      * Guess it's not necessary(we crash then anyway) and would only eat CPU time
 389      */
 390
 391     /* For each primitive */
 392     for (vx_index = 0; vx_index < NumVertexes; ++vx_index) {
 393
 394         /* Initialize diffuse color */
 395         diffuseColor = 0xFFFFFFFF;
 396
 397         /* Blending data and Point sizes are not supported by this function. They are not supported by the fixed
 398          * function pipeline at all. A Fixme for them is printed after decoding the vertex declaration
 399          */
 400
 401         /* For indexed data, we need to go a few more strides in */
 402         if (idxData != NULL) {
 403
 404             /* Indexed so work out the number of strides to skip */
 405             if (idxSize == 2) {
 406                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufS[startIdx+vx_index]));
 407                 SkipnStrides = pIdxBufS[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 408             } else {
 409                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufL[startIdx+vx_index]));
 410                 SkipnStrides = pIdxBufL[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 411             }
 412         }
 413
 414         /* Texture coords --------------------------- */
 415         for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 416
 417             if (!GL_SUPPORT(ARB_MULTITEXTURE) && textureNo > 0) {
 418                 FIXME("Program using multiple concurrent textures which this opengl implementation doesn't support\n");
 419                 continue ;
 420             }
 421
 422             /* Query tex coords */
 423             if (This->stateBlock->textures[textureNo] != NULL || pixelShader) {
 424
 425                 int    coordIdx = This->stateBlock->textureState[textureNo][WINED3DTSS_TEXCOORDINDEX];
 426                 int texture_idx = This->texUnitMap[textureNo];
 427                 float *ptrToCoords = NULL;
 428                 float  s = 0.0, t = 0.0, r = 0.0, q = 0.0;
 429
 430                 if (coordIdx > 7) {
 431                     VTRACE(("tex: %d - Skip tex coords, as being system generated\n", textureNo));
 432                     continue;
 433                 } else if (coordIdx < 0) {
 434                     FIXME("tex: %d - Coord index %d is less than zero, expect a crash.\n", textureNo, coordIdx);
 435                     continue;
 436                 }
 437
 438                 ptrToCoords = (float *)(texCoords[coordIdx] + (SkipnStrides * sd->u.s.texCoords[coordIdx].dwStride));
 439                 if (texCoords[coordIdx] == NULL) {
 440                     TRACE("tex: %d - Skipping tex coords, as no data supplied\n", textureNo);
 441                     if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 442                         GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + texture_idx, 0, 0, 0, 1));
 443                     } else {
 444                         glTexCoord4f(0, 0, 0, 1);
 445                     }
 446                     continue;
 447                 } else {
 448                     int coordsToUse = sd->u.s.texCoords[coordIdx].dwType + 1; /* 0 == WINED3DDECLTYPE_FLOAT1 etc */
 449
 450                     if (texture_idx == -1) continue;
 451
 452                     /* The coords to supply depend completely on the fvf / vertex shader */
 453                     switch (coordsToUse) {
 454                     case 4: q = ptrToCoords[3]; /* drop through */
 455                     case 3: r = ptrToCoords[2]; /* drop through */
 456                     case 2: t = ptrToCoords[1]; /* drop through */
 457                     case 1: s = ptrToCoords[0];
 458                     }
 459
 460                     switch (coordsToUse) {   /* Supply the provided texture coords */
 461                     case WINED3DTTFF_COUNT1:
 462                         VTRACE(("tex:%d, s=%f\n", textureNo, s));
 463                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 464                             GL_EXTCALL(glMultiTexCoord1fARB(GL_TEXTURE0_ARB + texture_idx, s));
 465                         } else {
 466                             glTexCoord1f(s);
 467                         }
 468                         break;
 469                     case WINED3DTTFF_COUNT2:
 470                         VTRACE(("tex:%d, s=%f, t=%f\n", textureNo, s, t));
 471                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 472                             GL_EXTCALL(glMultiTexCoord2fARB(GL_TEXTURE0_ARB + texture_idx, s, t));
 473                         } else {
 474                             glTexCoord2f(s, t);
 475                         }
 476                         break;
 477                     case WINED3DTTFF_COUNT3:
 478                         VTRACE(("tex:%d, s=%f, t=%f, r=%f\n", textureNo, s, t, r));
 479                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 480                             GL_EXTCALL(glMultiTexCoord3fARB(GL_TEXTURE0_ARB + texture_idx, s, t, r));
 481                         } else {
 482                             glTexCoord3f(s, t, r);
 483                         }
 484                         break;
 485                     case WINED3DTTFF_COUNT4:
 486                         VTRACE(("tex:%d, s=%f, t=%f, r=%f, q=%f\n", textureNo, s, t, r, q));
 487                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 488                             GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + texture_idx, s, t, r, q));
 489                         } else {
 490                             glTexCoord4f(s, t, r, q);
 491                         }
 492                         break;
 493                     default:
 494                         FIXME("Should not get here as coordsToUse is two bits only (%x)!\n", coordsToUse);
 495                     }
 496                 }
 497             }
 498         } /* End of textures */
 499
 500         /* Diffuse -------------------------------- */
 501         if (diffuse) {
 502             DWORD *ptrToCoords = (DWORD *)(diffuse + (SkipnStrides * sd->u.s.diffuse.dwStride));
 503
 504             diffuse_funcs[sd->u.s.diffuse.dwType]((void *) ptrToCoords);
 505             if(This->activeContext->num_untracked_materials) {
 506                 unsigned char i;
 507                 float color[4];
 508
 509                 diffuseColor = ptrToCoords[0];
 510                 color[0] = D3DCOLOR_B_R(diffuseColor) / 255.0;
 511                 color[1] = D3DCOLOR_B_G(diffuseColor) / 255.0;
 512                 color[2] = D3DCOLOR_B_B(diffuseColor) / 255.0;
 513                 color[3] = D3DCOLOR_B_A(diffuseColor) / 255.0;
 514
 515                 for(i = 0; i < This->activeContext->num_untracked_materials; i++) {
 516                     glMaterialfv(GL_FRONT_AND_BACK, This->activeContext->untracked_materials[i], color);
 517                 }
 518             }
 519         }
 520
 521         /* Specular ------------------------------- */
 522         if (specular) {
 523             DWORD *ptrToCoords = (DWORD *)(specular + (SkipnStrides * sd->u.s.specular.dwStride));
 524
 525             /* special case where the fog density is stored in the specular alpha channel */
 526             if(This->stateBlock->renderState[WINED3DRS_FOGENABLE] &&
 527               (This->stateBlock->renderState[WINED3DRS_FOGVERTEXMODE] == WINED3DFOG_NONE || sd->u.s.position.dwType == WINED3DDECLTYPE_FLOAT4 )&&
 528               This->stateBlock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE) {
 529                 if(GL_SUPPORT(EXT_FOG_COORD)) {
 530                     specularColor = ptrToCoords[0];
 531                     GL_EXTCALL(glFogCoordfEXT(specularColor >> 24));
 532                 } else {
 533                     static BOOL warned = FALSE;
 534                     if(!warned) {
 535                         /* TODO: Use the fog table code from old ddraw */
 536                         FIXME("Implement fog for transformed vertices in software\n");
 537                         warned = TRUE;
 538                     }
 539                 }
 540             }
 541
 542             specular_funcs[sd->u.s.specular.dwType]((void *) ptrToCoords);
 543         }
 544
 545         /* Normal -------------------------------- */
 546         if (normal != NULL) {
 547             float *ptrToCoords = (float *)(normal + (SkipnStrides * sd->u.s.normal.dwStride));
 548             normal_funcs[sd->u.s.normal.dwType](ptrToCoords);
 549         }
 550
 551         /* Position -------------------------------- */
 552         if (position) {
 553             float *ptrToCoords = (float *)(position + (SkipnStrides * sd->u.s.position.dwStride));
 554             position_funcs[sd->u.s.position.dwType](ptrToCoords);
 555         }
 556
 557         /* For non indexed mode, step onto next parts */
 558         if (idxData == NULL) {
 559             ++SkipnStrides;
 560         }
 561     }
 562
 563     glEnd();
 564     checkGLcall("glEnd and previous calls");
 565 }
 566
 567 static inline void send_attribute(IWineD3DDeviceImpl *This, const DWORD type, const UINT index, const void *ptr) {
 568     switch(type) {
 569         case WINED3DDECLTYPE_FLOAT1:
 570             GL_EXTCALL(glVertexAttrib1fvARB(index, (float *) ptr));
 571             break;
 572         case WINED3DDECLTYPE_FLOAT2:
 573             GL_EXTCALL(glVertexAttrib2fvARB(index, (float *) ptr));
 574             break;
 575         case WINED3DDECLTYPE_FLOAT3:
 576             GL_EXTCALL(glVertexAttrib3fvARB(index, (float *) ptr));
 577             break;
 578         case WINED3DDECLTYPE_FLOAT4:
 579             GL_EXTCALL(glVertexAttrib4fvARB(index, (float *) ptr));
 580             break;
 581
 582         case WINED3DDECLTYPE_UBYTE4:
 583             GL_EXTCALL(glVertexAttrib4ubvARB(index, ptr));
 584             break;
 585         case WINED3DDECLTYPE_UBYTE4N:
 586         case WINED3DDECLTYPE_D3DCOLOR:
 587             GL_EXTCALL(glVertexAttrib4NubvARB(index, ptr));
 588             break;
 589
 590         case WINED3DDECLTYPE_SHORT2:
 591             GL_EXTCALL(glVertexAttrib4svARB(index, (GLshort *) ptr));
 592             break;
 593         case WINED3DDECLTYPE_SHORT4:
 594             GL_EXTCALL(glVertexAttrib4svARB(index, (GLshort *) ptr));
 595             break;
 596
 597         case WINED3DDECLTYPE_SHORT2N:
 598         {
 599             GLshort s[4] = {((short *) ptr)[0], ((short *) ptr)[1], 0, 1};
 600             GL_EXTCALL(glVertexAttrib4NsvARB(index, s));
 601             break;
 602         }
 603         case WINED3DDECLTYPE_USHORT2N:
 604         {
 605             GLushort s[4] = {((unsigned short *) ptr)[0], ((unsigned short *) ptr)[1], 0, 1};
 606             GL_EXTCALL(glVertexAttrib4NusvARB(index, s));
 607             break;
 608         }
 609         case WINED3DDECLTYPE_SHORT4N:
 610             GL_EXTCALL(glVertexAttrib4NsvARB(index, (GLshort *) ptr));
 611             break;
 612         case WINED3DDECLTYPE_USHORT4N:
 613             GL_EXTCALL(glVertexAttrib4NusvARB(index, (GLushort *) ptr));
 614             break;
 615
 616         case WINED3DDECLTYPE_UDEC3:
 617             FIXME("Unsure about WINED3DDECLTYPE_UDEC3\n");
 618             /*glVertexAttrib3usvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 619             break;
 620         case WINED3DDECLTYPE_DEC3N:
 621             FIXME("Unsure about WINED3DDECLTYPE_DEC3N\n");
 622             /*glVertexAttrib3NusvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 623             break;
 624
 625         case WINED3DDECLTYPE_FLOAT16_2:
 626             /* Are those 16 bit floats. C doesn't have a 16 bit float type. I could read the single bits and calculate a 4
 627              * byte float according to the IEEE standard
 628              */
 629             if (GL_SUPPORT(NV_HALF_FLOAT)) {
 630                 GL_EXTCALL(glVertexAttrib2hvNV(index, (GLhalfNV *)ptr));
 631             } else {
 632                 float x = float_16_to_32(((unsigned short *) ptr) + 0);
 633                 float y = float_16_to_32(((unsigned short *) ptr) + 1);
 634                 GL_EXTCALL(glVertexAttrib2fARB(index, x, y));
 635             }
 636             break;
 637         case WINED3DDECLTYPE_FLOAT16_4:
 638             if (GL_SUPPORT(NV_HALF_FLOAT)) {
 639                 GL_EXTCALL(glVertexAttrib4hvNV(index, (GLhalfNV *)ptr));
 640             } else {
 641                 float x = float_16_to_32(((unsigned short *) ptr) + 0);
 642                 float y = float_16_to_32(((unsigned short *) ptr) + 1);
 643                 float z = float_16_to_32(((unsigned short *) ptr) + 2);
 644                 float w = float_16_to_32(((unsigned short *) ptr) + 3);
 645                 GL_EXTCALL(glVertexAttrib4fARB(index, x, y, z, w));
 646             }
 647             break;
 648
 649         case WINED3DDECLTYPE_UNUSED:
 650         default:
 651             ERR("Unexpected attribute declaration: %d\n", type);
 652             break;
 653     }
 654 }
 655
 656 static void drawStridedSlowVs(IWineD3DDevice *iface, WineDirect3DVertexStridedData *sd, UINT numberOfVertices,
 657                               GLenum glPrimitiveType, const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx,
 658                               ULONG startVertex) {
 659
 660     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *) iface;
 661     long                      SkipnStrides = startVertex + This->stateBlock->loadBaseVertexIndex;
 662     const WORD                *pIdxBufS     = NULL;
 663     const DWORD               *pIdxBufL     = NULL;
 664     LONG                       vx_index;
 665     int i;
 666     IWineD3DStateBlockImpl *stateblock = This->stateBlock;
 667     BYTE *ptr;
 668
 669     if (idxSize != 0) {
 670         /* Immediate mode drawing can't make use of indices in a vbo - get the data from the index buffer.
 671          * If the index buffer has no vbo(not supported or other reason), or with user pointer drawing
 672          * idxData will be != NULL
 673          */
 674         if(idxData == NULL) {
 675             idxData = ((IWineD3DIndexBufferImpl *) stateblock->pIndexData)->resource.allocatedMemory;
 676         }
 677
 678         if (idxSize == 2) pIdxBufS = (const WORD *) idxData;
 679         else pIdxBufL = (const DWORD *) idxData;
 680     }
 681
 682     /* Start drawing in GL */
 683     VTRACE(("glBegin(%x)\n", glPrimitiveType));
 684     glBegin(glPrimitiveType);
 685
 686     for (vx_index = 0; vx_index < numberOfVertices; ++vx_index) {
 687         if (idxData != NULL) {
 688
 689             /* Indexed so work out the number of strides to skip */
 690             if (idxSize == 2) {
 691                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufS[startIdx+vx_index]));
 692                 SkipnStrides = pIdxBufS[startIdx + vx_index] + stateblock->loadBaseVertexIndex;
 693             } else {
 694                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufL[startIdx+vx_index]));
 695                 SkipnStrides = pIdxBufL[startIdx + vx_index] + stateblock->loadBaseVertexIndex;
 696             }
 697         }
 698
 699         for(i = MAX_ATTRIBS - 1; i >= 0; i--) {
 700             if(!sd->u.input[i].lpData) continue;
 701
 702             ptr = sd->u.input[i].lpData +
 703                   sd->u.input[i].dwStride * SkipnStrides +
 704                   stateblock->streamOffset[sd->u.input[i].streamNo];
 705
 706             send_attribute(This, sd->u.input[i].dwType, i, ptr);
 707         }
 708         SkipnStrides++;
 709     }
 710
 711     glEnd();
 712 }
 713
 714 void depth_blt(IWineD3DDevice *iface, GLuint texture) {
 715     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 716     GLint old_binding = 0;
 717
 718     glPushAttrib(GL_ENABLE_BIT | GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
 719
 720     glDisable(GL_CULL_FACE);
 721     glEnable(GL_BLEND);
 722     glDisable(GL_ALPHA_TEST);
 723     glDisable(GL_SCISSOR_TEST);
 724     glDisable(GL_STENCIL_TEST);
 725     glEnable(GL_DEPTH_TEST);
 726     glDepthFunc(GL_ALWAYS);
 727     glDepthMask(GL_TRUE);
 728     glBlendFunc(GL_ZERO, GL_ONE);
 729
 730     GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
 731     glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
 732     glBindTexture(GL_TEXTURE_2D, texture);
 733     glEnable(GL_TEXTURE_2D);
 734
 735     This->shader_backend->shader_select_depth_blt(iface);
 736
 737     glBegin(GL_TRIANGLE_STRIP);
 738     glVertex2f(-1.0f, -1.0f);
 739     glVertex2f(1.0f, -1.0f);
 740     glVertex2f(-1.0f, 1.0f);
 741     glVertex2f(1.0f, 1.0f);
 742     glEnd();
 743
 744     glBindTexture(GL_TEXTURE_2D, old_binding);
 745
 746     glPopAttrib();
 747
 748     This->shader_backend->shader_deselect_depth_blt(iface);
 749 }
 750
 751 static inline void drawStridedInstanced(IWineD3DDevice *iface, WineDirect3DVertexStridedData *sd, UINT numberOfVertices,
 752                                  GLenum glPrimitiveType, const void *idxData, short idxSize, ULONG minIndex,
 753                                  ULONG startIdx, ULONG startVertex) {
 754     UINT numInstances = 0;
 755     int numInstancedAttribs = 0, i, j;
 756     UINT instancedData[sizeof(sd->u.input) / sizeof(sd->u.input[0]) /* 16 */];
 757     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *) iface;
 758     IWineD3DStateBlockImpl *stateblock = This->stateBlock;
 759
 760     if (idxSize == 0) {
 761         /* This is a nasty thing. MSDN says no hardware supports that and apps have to use software vertex processing.
 762          * We don't support this for now
 763          *
 764          * Shouldn't be too hard to support with opengl, in theory just call glDrawArrays instead of drawElements.
 765          * But the StreamSourceFreq value has a different meaning in that situation.
 766          */
 767         FIXME("Non-indexed instanced drawing is not supported\n");
 768         return;
 769     }
 770
 771     TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 772     idxData = idxData == (void *)-1 ? NULL : idxData;
 773
 774     /* First, figure out how many instances we have to draw */
 775     for(i = 0; i < MAX_STREAMS; i++) {
 776         /* Look at the streams and take the first one which matches */
 777         if(((stateblock->streamFlags[i] & WINED3DSTREAMSOURCE_INSTANCEDATA) || (stateblock->streamFlags[i] & WINED3DSTREAMSOURCE_INDEXEDDATA)) && stateblock->streamSource[i]) {
 778             /* D3D9 could set streamFreq 0 with (INSTANCEDATA or INDEXEDDATA) and then it is handled as 1. See d3d9/tests/visual.c-> stream_test() */
 779             if(stateblock->streamFreq[i] == 0){
 780                 numInstances = 1;
 781             } else {
 782                 numInstances = stateblock->streamFreq[i]; /* use the specified number of instances from the first matched stream. See d3d9/tests/visual.c-> stream_test() */
 783             }
 784             break; /* break, because only the first suitable value is interesting */
 785         }
 786     }
 787
 788     for(i = 0; i < sizeof(sd->u.input) / sizeof(sd->u.input[0]); i++) {
 789         if(stateblock->streamFlags[sd->u.input[i].streamNo] & WINED3DSTREAMSOURCE_INSTANCEDATA) {
 790             instancedData[numInstancedAttribs] = i;
 791             numInstancedAttribs++;
 792         }
 793     }
 794
 795     /* now draw numInstances instances :-) */
 796     for(i = 0; i < numInstances; i++) {
 797         /* Specify the instanced attributes using immediate mode calls */
 798         for(j = 0; j < numInstancedAttribs; j++) {
 799             BYTE *ptr = sd->u.input[instancedData[j]].lpData +
 800                         sd->u.input[instancedData[j]].dwStride * i +
 801                         stateblock->streamOffset[sd->u.input[instancedData[j]].streamNo];
 802             if(sd->u.input[instancedData[j]].VBO) {
 803                 IWineD3DVertexBufferImpl *vb = (IWineD3DVertexBufferImpl *) stateblock->streamSource[sd->u.input[instancedData[j]].streamNo];
 804                 ptr += (long) vb->resource.allocatedMemory;
 805             }
 806
 807             send_attribute(This, sd->u.input[instancedData[j]].dwType, instancedData[j], ptr);
 808         }
 809
 810         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 811                     (const char *)idxData+(idxSize * startIdx));
 812         checkGLcall("glDrawElements");
 813     }
 814 }
 815
 816 static inline void remove_vbos(IWineD3DDeviceImpl *This, WineDirect3DVertexStridedData *s) {
 817     unsigned char i;
 818     IWineD3DVertexBufferImpl *vb;
 819
 820     if(s->u.s.position.VBO) {
 821         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.position.streamNo];
 822         s->u.s.position.VBO = 0;
 823         s->u.s.position.lpData = (BYTE *) ((unsigned long) s->u.s.position.lpData + (unsigned long) vb->resource.allocatedMemory);
 824     }
 825     if(s->u.s.blendWeights.VBO) {
 826         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.blendWeights.streamNo];
 827         s->u.s.blendWeights.VBO = 0;
 828         s->u.s.blendWeights.lpData = (BYTE *) ((unsigned long) s->u.s.blendWeights.lpData + (unsigned long) vb->resource.allocatedMemory);
 829     }
 830     if(s->u.s.blendMatrixIndices.VBO) {
 831         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.blendMatrixIndices.streamNo];
 832         s->u.s.blendMatrixIndices.VBO = 0;
 833         s->u.s.blendMatrixIndices.lpData = (BYTE *) ((unsigned long) s->u.s.blendMatrixIndices.lpData + (unsigned long) vb->resource.allocatedMemory);
 834     }
 835     if(s->u.s.normal.VBO) {
 836         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.normal.streamNo];
 837         s->u.s.normal.VBO = 0;
 838         s->u.s.normal.lpData = (BYTE *) ((unsigned long) s->u.s.normal.lpData + (unsigned long) vb->resource.allocatedMemory);
 839     }
 840     if(s->u.s.pSize.VBO) {
 841         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.pSize.streamNo];
 842         s->u.s.pSize.VBO = 0;
 843         s->u.s.pSize.lpData = (BYTE *) ((unsigned long) s->u.s.pSize.lpData + (unsigned long) vb->resource.allocatedMemory);
 844     }
 845     if(s->u.s.diffuse.VBO) {
 846         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.diffuse.streamNo];
 847         s->u.s.diffuse.VBO = 0;
 848         s->u.s.diffuse.lpData = (BYTE *) ((unsigned long) s->u.s.diffuse.lpData + (unsigned long) vb->resource.allocatedMemory);
 849     }
 850     if(s->u.s.specular.VBO) {
 851         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.specular.streamNo];
 852         s->u.s.specular.VBO = 0;
 853         s->u.s.specular.lpData = (BYTE *) ((unsigned long) s->u.s.specular.lpData + (unsigned long) vb->resource.allocatedMemory);
 854     }
 855     for(i = 0; i < WINED3DDP_MAXTEXCOORD; i++) {
 856         if(s->u.s.texCoords[i].VBO) {
 857             vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.texCoords[i].streamNo];
 858             s->u.s.texCoords[i].VBO = 0;
 859             s->u.s.texCoords[i].lpData = (BYTE *) ((unsigned long) s->u.s.texCoords[i].lpData + (unsigned long) vb->resource.allocatedMemory);
 860         }
 861     }
 862     if(s->u.s.position2.VBO) {
 863         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.position2.streamNo];
 864         s->u.s.position2.VBO = 0;
 865         s->u.s.position2.lpData = (BYTE *) ((unsigned long) s->u.s.position2.lpData + (unsigned long) vb->resource.allocatedMemory);
 866     }
 867     if(s->u.s.normal2.VBO) {
 868         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.normal2.streamNo];
 869         s->u.s.normal2.VBO = 0;
 870         s->u.s.normal2.lpData = (BYTE *) ((unsigned long) s->u.s.normal2.lpData + (unsigned long) vb->resource.allocatedMemory);
 871     }
 872     if(s->u.s.tangent.VBO) {
 873         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.tangent.streamNo];
 874         s->u.s.tangent.VBO = 0;
 875         s->u.s.tangent.lpData = (BYTE *) ((unsigned long) s->u.s.tangent.lpData + (unsigned long) vb->resource.allocatedMemory);
 876     }
 877     if(s->u.s.binormal.VBO) {
 878         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.binormal.streamNo];
 879         s->u.s.binormal.VBO = 0;
 880         s->u.s.binormal.lpData = (BYTE *) ((unsigned long) s->u.s.binormal.lpData + (unsigned long) vb->resource.allocatedMemory);
 881     }
 882     if(s->u.s.tessFactor.VBO) {
 883         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.tessFactor.streamNo];
 884         s->u.s.tessFactor.VBO = 0;
 885         s->u.s.tessFactor.lpData = (BYTE *) ((unsigned long) s->u.s.tessFactor.lpData + (unsigned long) vb->resource.allocatedMemory);
 886     }
 887     if(s->u.s.fog.VBO) {
 888         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.fog.streamNo];
 889         s->u.s.fog.VBO = 0;
 890         s->u.s.fog.lpData = (BYTE *) ((unsigned long) s->u.s.fog.lpData + (unsigned long) vb->resource.allocatedMemory);
 891     }
 892     if(s->u.s.depth.VBO) {
 893         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.depth.streamNo];
 894         s->u.s.depth.VBO = 0;
 895         s->u.s.depth.lpData = (BYTE *) ((unsigned long) s->u.s.depth.lpData + (unsigned long) vb->resource.allocatedMemory);
 896     }
 897     if(s->u.s.sample.VBO) {
 898         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.sample.streamNo];
 899         s->u.s.sample.VBO = 0;
 900         s->u.s.sample.lpData = (BYTE *) ((unsigned long) s->u.s.sample.lpData + (unsigned long) vb->resource.allocatedMemory);
 901     }
 902 }
 903
 904 /* Routine common to the draw primitive and draw indexed primitive routines */
 905 void drawPrimitive(IWineD3DDevice *iface,
 906                    int PrimitiveType,
 907                    long NumPrimitives,
 908                    /* for Indexed: */
 909                    long  StartVertexIndex,
 910                    UINT  numberOfVertices,
 911                    long  StartIdx,
 912                    short idxSize,
 913                    const void *idxData,
 914                    int   minIndex) {
 915
 916     IWineD3DDeviceImpl           *This = (IWineD3DDeviceImpl *)iface;
 917     IWineD3DSurfaceImpl          *target;
 918     int i;
 919
 920     if (NumPrimitives == 0) return;
 921
 922     /* Invalidate the back buffer memory so LockRect will read it the next time */
 923     for(i = 0; i < GL_LIMITS(buffers); i++) {
 924         target = (IWineD3DSurfaceImpl *) This->render_targets[i];
 925         if (target) {
 926             IWineD3DSurface_LoadLocation((IWineD3DSurface *) target, SFLAG_INDRAWABLE, NULL);
 927             IWineD3DSurface_ModifyLocation((IWineD3DSurface *) target, SFLAG_INDRAWABLE, TRUE);
 928         }
 929     }
 930
 931     /* Signals other modules that a drawing is in progress and the stateblock finalized */
 932     This->isInDraw = TRUE;
 933
 934     ActivateContext(This, This->render_targets[0], CTXUSAGE_DRAWPRIM);
 935
 936     if (This->stencilBufferTarget) {
 937         /* Note that this depends on the ActivateContext call above to set
 938          * This->render_offscreen properly */
 939         DWORD location = This->render_offscreen ? SFLAG_DS_OFFSCREEN : SFLAG_DS_ONSCREEN;
 940         surface_load_ds_location(This->stencilBufferTarget, location);
 941         surface_modify_ds_location(This->stencilBufferTarget, location);
 942     }
 943
 944     /* Ok, we will be updating the screen from here onwards so grab the lock */
 945     ENTER_GL();
 946     {
 947         GLenum glPrimType;
 948         BOOL emulation = FALSE;
 949         WineDirect3DVertexStridedData *strided = &This->strided_streams;
 950         WineDirect3DVertexStridedData stridedlcl;
 951         /* Ok, Work out which primitive is requested and how many vertexes that
 952            will be                                                              */
 953         UINT calculatedNumberOfindices = primitiveToGl(PrimitiveType, NumPrimitives, &glPrimType);
 954         if (numberOfVertices == 0 )
 955             numberOfVertices = calculatedNumberOfindices;
 956
 957         if(!use_vs(This)) {
 958             if(!This->strided_streams.u.s.position_transformed && This->activeContext->num_untracked_materials &&
 959                 This->stateBlock->renderState[WINED3DRS_LIGHTING]) {
 960                 static BOOL first = TRUE;
 961                 if(first) {
 962                     FIXME("Using software emulation because not all material properties could be tracked\n");
 963                     first = FALSE;
 964                 } else {
 965                     TRACE("Using software emulation because not all material properties could be tracked\n");
 966                 }
 967                 emulation = TRUE;
 968             }
 969             else if(This->activeContext->fog_coord && This->stateBlock->renderState[WINED3DRS_FOGENABLE]) {
 970                 /* Either write a pipeline replacement shader or convert the specular alpha from unsigned byte
 971                  * to a float in the vertex buffer
 972                  */
 973                 static BOOL first = TRUE;
 974                 if(first) {
 975                     FIXME("Using software emulation because manual fog coordinates are provided\n");
 976                     first = FALSE;
 977                 } else {
 978                     TRACE("Using software emulation because manual fog coordinates are provided\n");
 979                 }
 980                 emulation = TRUE;
 981             }
 982
 983             if(emulation) {
 984                 strided = &stridedlcl;
 985                 memcpy(&stridedlcl, &This->strided_streams, sizeof(stridedlcl));
 986                 remove_vbos(This, &stridedlcl);
 987             }
 988         }
 989
 990         if (This->useDrawStridedSlow || emulation) {
 991             /* Immediate mode drawing */
 992             if(use_vs(This)) {
 993                 static BOOL first = TRUE;
 994                 if(first) {
 995                     FIXME("Using immediate mode with vertex shaders for half float emulation\n");
 996                     first = FALSE;
 997                 } else {
 998                     TRACE("Using immediate mode with vertex shaders for half float emulation\n");
 999                 }
1000                 drawStridedSlowVs(iface, strided, calculatedNumberOfindices, glPrimType,
1001                                   idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1002             } else {
1003                 drawStridedSlow(iface, strided, calculatedNumberOfindices,
1004                                 glPrimType, idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1005             }
1006         } else if(This->instancedDraw) {
1007             /* Instancing emulation with mixing immediate mode and arrays */
1008             drawStridedInstanced(iface, &This->strided_streams, calculatedNumberOfindices, glPrimType,
1009                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1010         } else {
1011             drawStridedFast(iface, calculatedNumberOfindices, glPrimType,
1012                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1013         }
1014     }
1015
1016     /* Finished updating the screen, restore lock */
1017     LEAVE_GL();
1018     TRACE("Done all gl drawing\n");
1019
1020     /* Diagnostics */
1021 #ifdef SHOW_FRAME_MAKEUP
1022     {
1023         static long int primCounter = 0;
1024         /* NOTE: set primCounter to the value reported by drawprim
1025            before you want to to write frame makeup to /tmp */
1026         if (primCounter >= 0) {
1027             WINED3DLOCKED_RECT r;
1028             char buffer[80];
1029             IWineD3DSurface_LockRect(This->renderTarget, &r, NULL, WINED3DLOCK_READONLY);
1030             sprintf(buffer, "/tmp/backbuffer_%d.tga", primCounter);
1031             TRACE("Saving screenshot %s\n", buffer);
1032             IWineD3DSurface_SaveSnapshot(This->renderTarget, buffer);
1033             IWineD3DSurface_UnlockRect(This->renderTarget);
1034
1035 #ifdef SHOW_TEXTURE_MAKEUP
1036            {
1037             IWineD3DSurface *pSur;
1038             int textureNo;
1039             for (textureNo = 0; textureNo < MAX_COMBINED_SAMPLERS; ++textureNo) {
1040                 if (This->stateBlock->textures[textureNo] != NULL) {
1041                     sprintf(buffer, "/tmp/texture_%p_%d_%d.tga", This->stateBlock->textures[textureNo], primCounter, textureNo);
1042                     TRACE("Saving texture %s\n", buffer);
1043                     if (IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]) == WINED3DRTYPE_TEXTURE) {
1044                             IWineD3DTexture_GetSurfaceLevel((IWineD3DTexture *)This->stateBlock->textures[textureNo], 0, &pSur);
1045                             IWineD3DSurface_SaveSnapshot(pSur, buffer);
1046                             IWineD3DSurface_Release(pSur);
1047                     } else  {
1048                         FIXME("base Texture isn't of type texture %d\n", IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]));
1049                     }
1050                 }
1051             }
1052            }
1053 #endif
1054         }
1055         TRACE("drawprim #%d\n", primCounter);
1056         ++primCounter;
1057     }
1058 #endif
1059
1060     /* Control goes back to the device, stateblock values may change again */
1061     This->isInDraw = FALSE;
1062 }
1063
1064 static void normalize_normal(float *n) {
1065     float length = n[0] * n[0] + n[1] * n[1] + n[2] * n[2];
1066     if(length == 0.0) return;
1067     length = sqrt(length);
1068     n[0] = n[0] / length;
1069     n[1] = n[1] / length;
1070     n[2] = n[2] / length;
1071 }
1072
1073 /* Tesselates a high order rectangular patch into single triangles using gl evaluators
1074  *
1075  * The problem is that OpenGL does not offer a direct way to return the tesselated primitives,
1076  * and they can't be sent off for rendering directly either. Tesselating is slow, so we want
1077  * to cache the patches in a vertex buffer. But more importantly, gl can't bind generated
1078  * attributes to numbered shader attributes, so we have to store them and rebind them as needed
1079  * in drawprim.
1080  *
1081  * To read back, the opengl feedback mode is used. This creates a proplem because we want
1082  * untransformed, unlit vertices, but feedback runs everything through transform and lighting.
1083  * Thus disable lighting and set identity matrices to get unmodified colors and positions.
1084  * To overcome clipping find the biggest x, y and z values of the vertices in the patch and scale
1085  * them to [-1.0;+1.0] and set the viewport up to scale them back.
1086  *
1087  * Normals are more tricky: Draw white vertices with 3 directional lights, and calculate the
1088  * resulting colors back to the normals.
1089  *
1090  * NOTE: This function activates a context for blitting, modifies matrices & viewport, but
1091  * does not restore it because normally a draw follows immediately afterwards. The caller is
1092  * responsible of taking care that either the gl states are restored, or the context activated
1093  * for drawing to reset the lastWasBlit flag.
1094  */
1095 HRESULT tesselate_rectpatch(IWineD3DDeviceImpl *This,
1096                             struct WineD3DRectPatch *patch) {
1097     unsigned int i, j, num_quads, out_vertex_size, buffer_size, d3d_out_vertex_size;
1098     float max_x = 0.0, max_y = 0.0, max_z = 0.0, neg_z = 0.0;
1099     WineDirect3DVertexStridedData strided;
1100     BYTE *data;
1101     WINED3DRECTPATCH_INFO *info = &patch->RectPatchInfo;
1102     DWORD vtxStride;
1103     GLenum feedback_type;
1104     GLfloat *feedbuffer;
1105
1106     /* First, locate the position data. This is provided in a vertex buffer in the stateblock.
1107      * Beware of vbos
1108      */
1109     memset(&strided, 0, sizeof(strided));
1110     primitiveDeclarationConvertToStridedData((IWineD3DDevice *) This, FALSE, &strided, NULL);
1111     if(strided.u.s.position.VBO) {
1112         IWineD3DVertexBufferImpl *vb;
1113         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[strided.u.s.position.streamNo];
1114         strided.u.s.position.lpData = (BYTE *) ((unsigned long) strided.u.s.position.lpData +
1115                                                 (unsigned long) vb->resource.allocatedMemory);
1116     }
1117     vtxStride = strided.u.s.position.dwStride;
1118     data = strided.u.s.position.lpData +
1119            vtxStride * info->Stride * info->StartVertexOffsetHeight +
1120            vtxStride * info->StartVertexOffsetWidth;
1121
1122     /* Not entirely sure about what happens with transformed vertices */
1123     if(strided.u.s.position_transformed) {
1124         FIXME("Transformed position in rectpatch generation\n");
1125     }
1126     if(vtxStride % sizeof(GLfloat)) {
1127         /* glMap2f reads vertex sizes in GLfloats, the d3d stride is in bytes.
1128          * I don't see how the stride could not be a multiple of 4, but make sure
1129          * to check it
1130          */
1131         ERR("Vertex stride is not a multiple of sizeof(GLfloat)\n");
1132     }
1133     if(info->Basis != WINED3DBASIS_BEZIER) {
1134         FIXME("Basis is %s, how to handle this?\n", debug_d3dbasis(info->Basis));
1135     }
1136     if(info->Degree != WINED3DDEGREE_CUBIC) {
1137         FIXME("Degree is %s, how to handle this?\n", debug_d3ddegree(info->Degree));
1138     }
1139
1140     /* First, get the boundary cube of the input data */
1141     for(j = 0; j < info->Height; j++) {
1142         for(i = 0; i < info->Width; i++) {
1143             float *v = (float *) (data + vtxStride * i + vtxStride * info->Stride * j);
1144             if(fabs(v[0]) > max_x) max_x = fabs(v[0]);
1145             if(fabs(v[1]) > max_y) max_y = fabs(v[1]);
1146             if(fabs(v[2]) > max_z) max_z = fabs(v[2]);
1147             if(v[2] < neg_z) neg_z = v[2];
1148         }
1149     }
1150
1151     /* This needs some improvements in the vertex decl code */
1152     FIXME("Cannot find data to generate. Only generating position and normals\n");
1153     patch->has_normals = TRUE;
1154     patch->has_texcoords = FALSE;
1155
1156     /* Simply activate the context for blitting. This disables all the things we don't want and
1157      * takes care of dirtifying. Dirtifying is preferred over pushing / popping, since drawing the
1158      * patch (as opposed to normal draws) will most likely need different changes anyway
1159      */
1160     ActivateContext(This, This->lastActiveRenderTarget, CTXUSAGE_BLIT);
1161     ENTER_GL();
1162
1163     glMatrixMode(GL_PROJECTION);
1164     checkGLcall("glMatrixMode(GL_PROJECTION)");
1165     glLoadIdentity();
1166     checkGLcall("glLoadIndentity()");
1167     glScalef(1 / (max_x) , 1 / (max_y), max_z == 0 ? 1 : 1 / ( 2 * max_z));
1168     glTranslatef(0, 0, 0.5);
1169     checkGLcall("glScalef");
1170     glViewport(-max_x, -max_y, 2 * (max_x), 2 * (max_y));
1171     checkGLcall("glViewport");
1172
1173     /* Some states to take care of. If we're in wireframe opengl will produce lines, and confuse
1174      * our feedback buffer parser
1175      */
1176     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1177     checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
1178     IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_FILLMODE));
1179     if(patch->has_normals) {
1180         float black[4] = {0, 0, 0, 0};
1181         float red[4]   = {1, 0, 0, 0};
1182         float green[4] = {0, 1, 0, 0};
1183         float blue[4]  = {0, 0, 1, 0};
1184         float white[4] = {1, 1, 1, 1};
1185         glEnable(GL_LIGHTING);
1186         checkGLcall("glEnable(GL_LIGHTING)");
1187         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
1188         checkGLcall("glLightModel for MODEL_AMBIENT");
1189         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_AMBIENT));
1190
1191         for(i = 3; i < GL_LIMITS(lights); i++) {
1192             glDisable(GL_LIGHT0 + i);
1193             checkGLcall("glDisable(GL_LIGHT0 + i)");
1194             IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(i));
1195         }
1196
1197         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(0));
1198         glLightfv(GL_LIGHT0, GL_DIFFUSE, red);
1199         glLightfv(GL_LIGHT0, GL_SPECULAR, black);
1200         glLightfv(GL_LIGHT0, GL_AMBIENT, black);
1201         glLightfv(GL_LIGHT0, GL_POSITION, red);
1202         glEnable(GL_LIGHT0);
1203         checkGLcall("Setting up light 1\n");
1204         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(1));
1205         glLightfv(GL_LIGHT1, GL_DIFFUSE, green);
1206         glLightfv(GL_LIGHT1, GL_SPECULAR, black);
1207         glLightfv(GL_LIGHT1, GL_AMBIENT, black);
1208         glLightfv(GL_LIGHT1, GL_POSITION, green);
1209         glEnable(GL_LIGHT1);
1210         checkGLcall("Setting up light 2\n");
1211         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(2));
1212         glLightfv(GL_LIGHT2, GL_DIFFUSE, blue);
1213         glLightfv(GL_LIGHT2, GL_SPECULAR, black);
1214         glLightfv(GL_LIGHT2, GL_AMBIENT, black);
1215         glLightfv(GL_LIGHT2, GL_POSITION, blue);
1216         glEnable(GL_LIGHT2);
1217         checkGLcall("Setting up light 3\n");
1218
1219         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_MATERIAL);
1220         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_COLORVERTEX));
1221         glDisable(GL_COLOR_MATERIAL);
1222         glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, black);
1223         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
1224         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
1225         checkGLcall("Setting up materials\n");
1226     }
1227
1228     /* Enable the needed maps.
1229      * GL_MAP2_VERTEX_3 is needed for positional data.
1230      * GL_AUTO_NORMAL to generate normals from the position. Do not use GL_MAP2_NORMAL.
1231      * GL_MAP2_TEXTURE_COORD_4 for texture coords
1232      */
1233     num_quads = ceilf(patch->numSegs[0]) * ceilf(patch->numSegs[1]);
1234     out_vertex_size = 3 /* position */;
1235     d3d_out_vertex_size = 3;
1236     glEnable(GL_MAP2_VERTEX_3);
1237     if(patch->has_normals && patch->has_texcoords) {
1238         FIXME("Texcoords not handled yet\n");
1239         feedback_type = GL_3D_COLOR_TEXTURE;
1240         out_vertex_size += 8;
1241         d3d_out_vertex_size += 7;
1242         glEnable(GL_AUTO_NORMAL);
1243         glEnable(GL_MAP2_TEXTURE_COORD_4);
1244     } else if(patch->has_texcoords) {
1245         FIXME("Texcoords not handled yet\n");
1246         feedback_type = GL_3D_COLOR_TEXTURE;
1247         out_vertex_size += 7;
1248         d3d_out_vertex_size += 4;
1249         glEnable(GL_MAP2_TEXTURE_COORD_4);
1250     } else if(patch->has_normals) {
1251         feedback_type = GL_3D_COLOR;
1252         out_vertex_size += 4;
1253         d3d_out_vertex_size += 3;
1254         glEnable(GL_AUTO_NORMAL);
1255     } else {
1256         feedback_type = GL_3D;
1257     }
1258     checkGLcall("glEnable vertex attrib generation");
1259
1260     buffer_size = num_quads * out_vertex_size * 2 /* triangle list */ * 3 /* verts per tri */
1261                    + 4 * num_quads /* 2 triangle markers per quad + num verts in tri */;
1262     feedbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, buffer_size * sizeof(float) * 8);
1263
1264     glMap2f(GL_MAP2_VERTEX_3,
1265             0, 1, vtxStride / sizeof(float), info->Width,
1266             0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1267             (float *) data);
1268     checkGLcall("glMap2f");
1269     if(patch->has_texcoords) {
1270         glMap2f(GL_MAP2_TEXTURE_COORD_4,
1271                 0, 1, vtxStride / sizeof(float), info->Width,
1272                 0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1273                 (float *) data);
1274         checkGLcall("glMap2f");
1275     }
1276     glMapGrid2f(ceilf(patch->numSegs[0]), 0.0, 1.0, ceilf(patch->numSegs[1]), 0.0, 1.0);
1277     checkGLcall("glMapGrid2f");
1278
1279     glFeedbackBuffer(buffer_size * 2, feedback_type, feedbuffer);
1280     checkGLcall("glFeedbackBuffer");
1281     glRenderMode(GL_FEEDBACK);
1282
1283     glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1284     checkGLcall("glEvalMesh2\n");
1285
1286     i = glRenderMode(GL_RENDER);
1287     if(i == -1) {
1288         LEAVE_GL();
1289         ERR("Feedback failed. Expected %d elements back\n", buffer_size);
1290         Sleep(10000);
1291         HeapFree(GetProcessHeap(), 0, feedbuffer);
1292         return WINED3DERR_DRIVERINTERNALERROR;
1293     } else if(i != buffer_size) {
1294         LEAVE_GL();
1295         ERR("Unexpected amount of elements returned. Expected %d, got %d\n", buffer_size, i);
1296         Sleep(10000);
1297         HeapFree(GetProcessHeap(), 0, feedbuffer);
1298         return WINED3DERR_DRIVERINTERNALERROR;
1299     } else {
1300         TRACE("Got %d elements as expected\n", i);
1301     }
1302
1303     HeapFree(GetProcessHeap(), 0, patch->mem);
1304     patch->mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_quads * 6 * d3d_out_vertex_size * sizeof(float) * 8);
1305     i = 0;
1306     for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1307         if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1308             ERR("Unexpected token: %f\n", feedbuffer[j]);
1309             continue;
1310         }
1311         if(feedbuffer[j + 1] != 3) {
1312             ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1313             continue;
1314         }
1315         /* Somehow there are different ideas about back / front facing, so fix up the
1316          * vertex order
1317          */
1318         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 2 + 2]; /* x, triangle 2 */
1319         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 2 + 3]; /* y, triangle 2 */
1320         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 2 + 4] - 0.5) * 4 * max_z; /* z, triangle 3 */
1321         if(patch->has_normals) {
1322             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 2 + 5];
1323             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 2 + 6];
1324             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 2 + 7];
1325         }
1326         i += d3d_out_vertex_size;
1327
1328         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 1 + 2]; /* x, triangle 2 */
1329         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 1 + 3]; /* y, triangle 2 */
1330         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 1 + 4] - 0.5) * 4 * max_z; /* z, triangle 2 */
1331         if(patch->has_normals) {
1332             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 1 + 5];
1333             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 1 + 6];
1334             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 1 + 7];
1335         }
1336         i += d3d_out_vertex_size;
1337
1338         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 0 + 2]; /* x, triangle 1 */
1339         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 0 + 3]; /* y, triangle 1 */
1340         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 0 + 4] - 0.5) * 4 * max_z; /* z, triangle 1 */
1341         if(patch->has_normals) {
1342             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 0 + 5];
1343             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 0 + 6];
1344             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 0 + 7];
1345         }
1346         i += d3d_out_vertex_size;
1347     }
1348
1349     if(patch->has_normals) {
1350         /* Now do the same with reverse light directions */
1351         float x[4] = {-1,  0,  0, 0};
1352         float y[4] = { 0, -1,  0, 0};
1353         float z[4] = { 0,  0, -1, 0};
1354         glLightfv(GL_LIGHT0, GL_POSITION, x);
1355         glLightfv(GL_LIGHT1, GL_POSITION, y);
1356         glLightfv(GL_LIGHT2, GL_POSITION, z);
1357         checkGLcall("Setting up reverse light directions\n");
1358
1359         glRenderMode(GL_FEEDBACK);
1360         checkGLcall("glRenderMode(GL_FEEDBACK)");
1361         glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1362         checkGLcall("glEvalMesh2\n");
1363         i = glRenderMode(GL_RENDER);
1364         checkGLcall("glRenderMode(GL_RENDER)");
1365
1366         i = 0;
1367         for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1368             if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1369                 ERR("Unexpected token: %f\n", feedbuffer[j]);
1370                 continue;
1371             }
1372             if(feedbuffer[j + 1] != 3) {
1373                 ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1374                 continue;
1375             }
1376             if(patch->mem[i + 3] == 0.0)
1377                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 2 + 5];
1378             if(patch->mem[i + 4] == 0.0)
1379                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 2 + 6];
1380             if(patch->mem[i + 5] == 0.0)
1381                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 2 + 7];
1382             normalize_normal(patch->mem + i + 3);
1383             i += d3d_out_vertex_size;
1384
1385             if(patch->mem[i + 3] == 0.0)
1386                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 1 + 5];
1387             if(patch->mem[i + 4] == 0.0)
1388                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 1 + 6];
1389             if(patch->mem[i + 5] == 0.0)
1390                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 1 + 7];
1391             normalize_normal(patch->mem + i + 3);
1392             i += d3d_out_vertex_size;
1393
1394             if(patch->mem[i + 3] == 0.0)
1395                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 0 + 5];
1396             if(patch->mem[i + 4] == 0.0)
1397                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 0 + 6];
1398             if(patch->mem[i + 5] == 0.0)
1399                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 0 + 7];
1400             normalize_normal(patch->mem + i + 3);
1401             i += d3d_out_vertex_size;
1402         }
1403     }
1404
1405     glDisable(GL_MAP2_VERTEX_3);
1406     glDisable(GL_AUTO_NORMAL);
1407     glDisable(GL_MAP2_NORMAL);
1408     glDisable(GL_MAP2_TEXTURE_COORD_4);
1409     checkGLcall("glDisable vertex attrib generation");
1410     LEAVE_GL();
1411
1412     HeapFree(GetProcessHeap(), 0, feedbuffer);
1413
1414     vtxStride = 3 * sizeof(float);
1415     if(patch->has_normals) {
1416         vtxStride += 3 * sizeof(float);
1417     }
1418     if(patch->has_texcoords) {
1419         vtxStride += 4 * sizeof(float);
1420     }
1421     memset(&patch->strided, 0, sizeof(&patch->strided));
1422     patch->strided.u.s.position.lpData = (BYTE *) patch->mem;
1423     patch->strided.u.s.position.dwStride = vtxStride;
1424     patch->strided.u.s.position.dwType = WINED3DDECLTYPE_FLOAT3;
1425     patch->strided.u.s.position.streamNo = 255;
1426
1427     if(patch->has_normals) {
1428         patch->strided.u.s.normal.lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1429         patch->strided.u.s.normal.dwStride = vtxStride;
1430         patch->strided.u.s.normal.dwType = WINED3DDECLTYPE_FLOAT3;
1431         patch->strided.u.s.normal.streamNo = 255;
1432     }
1433     if(patch->has_texcoords) {
1434         patch->strided.u.s.texCoords[0].lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1435         if(patch->has_normals) {
1436             patch->strided.u.s.texCoords[0].lpData += 3 * sizeof(float);
1437         }
1438         patch->strided.u.s.texCoords[0].dwStride = vtxStride;
1439         patch->strided.u.s.texCoords[0].dwType = WINED3DDECLTYPE_FLOAT4;
1440         /* MAX_STREAMS index points to an unused element in stateblock->streamOffsets which
1441          * always remains set to 0. Windows uses stream 255 here, but this is not visible to the
1442          * application.
1443          */
1444         patch->strided.u.s.texCoords[0].streamNo = MAX_STREAMS;
1445     }
1446
1447     return WINED3D_OK;
1448 }