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