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

   1 /*
   2  * WINED3D draw functions
   3  *
   4  * Copyright 2002-2004 Jason Edmeades
   5  * Copyright 2002-2004 Raphael Junqueira
   6  * Copyright 2004 Christian Costa
   7  * Copyright 2005 Oliver Stieber
   8  * Copyright 2006 Henri Verbeet
   9  * Copyright 2007 Stefan Dösinger for CodeWeavers
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include "config.h"
  27 #include "wined3d_private.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(d3d_draw);
  30 #define GLINFO_LOCATION This->adapter->gl_info
  31
  32 #include <stdio.h>
  33
  34 #if 0 /* TODO */
  35 extern IWineD3DVertexShaderImpl*            VertexShaders[64];
  36 extern IWineD3DVertexDeclarationImpl*       VertexShaderDeclarations[64];
  37 extern IWineD3DPixelShaderImpl*             PixelShaders[64];
  38
  39 #undef GL_VERSION_1_4 /* To be fixed, caused by mesa headers */
  40 #endif
  41
  42 /* Issues the glBegin call for gl given the primitive type and count */
  43 static DWORD primitiveToGl(WINED3DPRIMITIVETYPE PrimitiveType,
  44                     DWORD            NumPrimitives,
  45                     GLenum          *primType)
  46 {
  47     DWORD   NumVertexes = NumPrimitives;
  48
  49     switch (PrimitiveType) {
  50     case WINED3DPT_POINTLIST:
  51         TRACE("POINTS\n");
  52         *primType   = GL_POINTS;
  53         NumVertexes = NumPrimitives;
  54         break;
  55
  56     case WINED3DPT_LINELIST:
  57         TRACE("LINES\n");
  58         *primType   = GL_LINES;
  59         NumVertexes = NumPrimitives * 2;
  60         break;
  61
  62     case WINED3DPT_LINESTRIP:
  63         TRACE("LINE_STRIP\n");
  64         *primType   = GL_LINE_STRIP;
  65         NumVertexes = NumPrimitives + 1;
  66         break;
  67
  68     case WINED3DPT_TRIANGLELIST:
  69         TRACE("TRIANGLES\n");
  70         *primType   = GL_TRIANGLES;
  71         NumVertexes = NumPrimitives * 3;
  72         break;
  73
  74     case WINED3DPT_TRIANGLESTRIP:
  75         TRACE("TRIANGLE_STRIP\n");
  76         *primType   = GL_TRIANGLE_STRIP;
  77         NumVertexes = NumPrimitives + 2;
  78         break;
  79
  80     case WINED3DPT_TRIANGLEFAN:
  81         TRACE("TRIANGLE_FAN\n");
  82         *primType   = GL_TRIANGLE_FAN;
  83         NumVertexes = NumPrimitives + 2;
  84         break;
  85
  86     default:
  87         FIXME("Unhandled primitive\n");
  88         *primType    = GL_POINTS;
  89         break;
  90     }
  91     return NumVertexes;
  92 }
  93
  94 static BOOL fixed_get_input(
  95     BYTE usage, BYTE usage_idx,
  96     unsigned int* regnum) {
  97
  98     *regnum = -1;
  99
 100     /* Those positions must have the order in the
 101      * named part of the strided data */
 102
 103     if ((usage == WINED3DDECLUSAGE_POSITION || usage == WINED3DDECLUSAGE_POSITIONT) && usage_idx == 0)
 104         *regnum = 0;
 105     else if (usage == WINED3DDECLUSAGE_BLENDWEIGHT && usage_idx == 0)
 106         *regnum = 1;
 107     else if (usage == WINED3DDECLUSAGE_BLENDINDICES && usage_idx == 0)
 108         *regnum = 2;
 109     else if (usage == WINED3DDECLUSAGE_NORMAL && usage_idx == 0)
 110         *regnum = 3;
 111     else if (usage == WINED3DDECLUSAGE_PSIZE && usage_idx == 0)
 112         *regnum = 4;
 113     else if (usage == WINED3DDECLUSAGE_COLOR && usage_idx == 0)
 114         *regnum = 5;
 115     else if (usage == WINED3DDECLUSAGE_COLOR && usage_idx == 1)
 116         *regnum = 6;
 117     else if (usage == WINED3DDECLUSAGE_TEXCOORD && usage_idx < WINED3DDP_MAXTEXCOORD)
 118         *regnum = 7 + usage_idx;
 119     else if ((usage == WINED3DDECLUSAGE_POSITION || usage == WINED3DDECLUSAGE_POSITIONT) && usage_idx == 1)
 120         *regnum = 7 + WINED3DDP_MAXTEXCOORD;
 121     else if (usage == WINED3DDECLUSAGE_NORMAL && usage_idx == 1)
 122         *regnum = 8 + WINED3DDP_MAXTEXCOORD;
 123     else if (usage == WINED3DDECLUSAGE_TANGENT && usage_idx == 0)
 124         *regnum = 9 + WINED3DDP_MAXTEXCOORD;
 125     else if (usage == WINED3DDECLUSAGE_BINORMAL && usage_idx == 0)
 126         *regnum = 10 + WINED3DDP_MAXTEXCOORD;
 127     else if (usage == WINED3DDECLUSAGE_TESSFACTOR && usage_idx == 0)
 128         *regnum = 11 + WINED3DDP_MAXTEXCOORD;
 129     else if (usage == WINED3DDECLUSAGE_FOG && usage_idx == 0)
 130         *regnum = 12 + WINED3DDP_MAXTEXCOORD;
 131     else if (usage == WINED3DDECLUSAGE_DEPTH && usage_idx == 0)
 132         *regnum = 13 + WINED3DDP_MAXTEXCOORD;
 133     else if (usage == WINED3DDECLUSAGE_SAMPLE && usage_idx == 0)
 134         *regnum = 14 + WINED3DDP_MAXTEXCOORD;
 135
 136     if (*regnum < 0) {
 137         FIXME("Unsupported input stream [usage=%s, usage_idx=%u]\n",
 138             debug_d3ddeclusage(usage), usage_idx);
 139         return FALSE;
 140     }
 141     return TRUE;
 142 }
 143
 144 void primitiveDeclarationConvertToStridedData(
 145      IWineD3DDevice *iface,
 146      BOOL useVertexShaderFunction,
 147      WineDirect3DVertexStridedData *strided,
 148      BOOL *fixup) {
 149
 150      /* We need to deal with frequency data!*/
 151
 152     BYTE  *data    = NULL;
 153     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 154     IWineD3DVertexDeclarationImpl* vertexDeclaration = (IWineD3DVertexDeclarationImpl *)This->stateBlock->vertexDecl;
 155     int i;
 156     WINED3DVERTEXELEMENT *element;
 157     DWORD stride;
 158     int reg;
 159     DWORD numPreloadStreams = This->stateBlock->streamIsUP ? 0 : vertexDeclaration->num_streams;
 160     DWORD *streams = vertexDeclaration->streams;
 161
 162     /* Check for transformed vertices, disable vertex shader if present */
 163     strided->u.s.position_transformed = vertexDeclaration->position_transformed;
 164     if(vertexDeclaration->position_transformed) {
 165         useVertexShaderFunction = FALSE;
 166     }
 167
 168     /* Translate the declaration into strided data */
 169     for (i = 0 ; i < vertexDeclaration->declarationWNumElements - 1; ++i) {
 170         GLint streamVBO = 0;
 171         BOOL stride_used;
 172         unsigned int idx;
 173
 174         element = vertexDeclaration->pDeclarationWine + i;
 175         TRACE("%p Element %p (%d of %d)\n", vertexDeclaration->pDeclarationWine,
 176             element,  i + 1, vertexDeclaration->declarationWNumElements - 1);
 177
 178         if (This->stateBlock->streamSource[element->Stream] == NULL)
 179             continue;
 180
 181         stride  = This->stateBlock->streamStride[element->Stream];
 182         if (This->stateBlock->streamIsUP) {
 183             TRACE("Stream is up %d, %p\n", element->Stream, This->stateBlock->streamSource[element->Stream]);
 184             streamVBO = 0;
 185             data    = (BYTE *)This->stateBlock->streamSource[element->Stream];
 186         } else {
 187             TRACE("Stream isn't up %d, %p\n", element->Stream, This->stateBlock->streamSource[element->Stream]);
 188             data    = IWineD3DVertexBufferImpl_GetMemory(This->stateBlock->streamSource[element->Stream], 0, &streamVBO);
 189
 190             /* Can't use vbo's if the base vertex index is negative. OpenGL doesn't accept negative offsets
 191              * (or rather offsets bigger than the vbo, because the pointer is unsigned), so use system memory
 192              * sources. In most sane cases the pointer - offset will still be > 0, otherwise it will wrap
 193              * around to some big value. Hope that with the indices, the driver wraps it back internally. If
 194              * not, drawStridedSlow is needed, including a vertex buffer path.
 195              */
 196             if(This->stateBlock->loadBaseVertexIndex < 0) {
 197                 WARN("loadBaseVertexIndex is < 0 (%d), not using vbos\n", This->stateBlock->loadBaseVertexIndex);
 198                 streamVBO = 0;
 199                 data = ((IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[element->Stream])->resource.allocatedMemory;
 200                 if(data + This->stateBlock->loadBaseVertexIndex * stride < 0) {
 201                     FIXME("System memory vertex data load offset is negative!\n");
 202                 }
 203             }
 204
 205             if(fixup) {
 206                 if( streamVBO != 0) *fixup = TRUE;
 207                 else if(*fixup && !useVertexShaderFunction &&
 208                        (element->Usage == WINED3DDECLUSAGE_COLOR ||
 209                         element->Usage == WINED3DDECLUSAGE_POSITIONT)) {
 210                     /* This may be bad with the fixed function pipeline */
 211                     FIXME("Missing vbo streams with unfixed colors or transformed position, expect problems\n");
 212                 }
 213             }
 214         }
 215         data += element->Offset;
 216         reg = element->Reg;
 217
 218         TRACE("Offset %d Stream %d UsageIndex %d\n", element->Offset, element->Stream, element->UsageIndex);
 219
 220         if (useVertexShaderFunction)
 221             stride_used = vshader_get_input(This->stateBlock->vertexShader,
 222                 element->Usage, element->UsageIndex, &idx);
 223         else
 224             stride_used = fixed_get_input(element->Usage, element->UsageIndex, &idx);
 225
 226         if (stride_used) {
 227             TRACE("Loaded %s array %u [usage=%s, usage_idx=%u, "
 228                     "stream=%u, offset=%u, stride=%u, type=%s, VBO=%u]\n",
 229                     useVertexShaderFunction? "shader": "fixed function", idx,
 230                     debug_d3ddeclusage(element->Usage), element->UsageIndex,
 231                     element->Stream, element->Offset, stride, debug_d3ddecltype(element->Type), streamVBO);
 232
 233             strided->u.input[idx].lpData = data;
 234             strided->u.input[idx].dwType = element->Type;
 235             strided->u.input[idx].dwStride = stride;
 236             strided->u.input[idx].VBO = streamVBO;
 237             strided->u.input[idx].streamNo = element->Stream;
 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_PreLoad(This->stateBlock->streamSource[streams[i]]);
 250     }
 251 }
 252
 253 static void drawStridedFast(IWineD3DDevice *iface,UINT numberOfVertices, GLenum glPrimitiveType,
 254                      const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex) {
 255     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 256
 257     if (idxSize != 0 /* This crashes sometimes!*/) {
 258         TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 259         idxData = idxData == (void *)-1 ? NULL : idxData;
 260 #if 1
 261         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 262                      (const char *)idxData+(idxSize * startIdx));
 263         checkGLcall("glDrawElements");
 264 #else /* using drawRangeElements may be faster */
 265
 266         glDrawRangeElements(glPrimitiveType, minIndex, minIndex + numberOfVertices - 1, numberOfVertices,
 267                       idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 268                       (const char *)idxData+(idxSize * startIdx));
 269         checkGLcall("glDrawRangeElements");
 270 #endif
 271
 272     } else {
 273
 274         /* Note first is now zero as we shuffled along earlier */
 275         TRACE("(%p) : glDrawArrays(%x, 0, %d)\n", This, glPrimitiveType, numberOfVertices);
 276         glDrawArrays(glPrimitiveType, startVertex, numberOfVertices);
 277         checkGLcall("glDrawArrays");
 278
 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     float x  = 0.0f, y  = 0.0f, z = 0.0f;  /* x,y,z coordinates          */
 298     float rhw = 0.0f;                      /* rhw                        */
 299     DWORD diffuseColor = 0xFFFFFFFF;       /* Diffuse Color              */
 300     DWORD specularColor = 0;               /* Specular Color             */
 301     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 302     UINT *streamOffset = This->stateBlock->streamOffset;
 303     long                      SkipnStrides = startVertex + This->stateBlock->loadBaseVertexIndex;
 304
 305     BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
 306     BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
 307
 308     TRACE("Using slow vertex array code\n");
 309
 310     /* Variable Initialization */
 311     if (idxSize != 0) {
 312         /* Immediate mode drawing can't make use of indices in a vbo - get the data from the index buffer.
 313          * If the index buffer has no vbo(not supported or other reason), or with user pointer drawing
 314          * idxData will be != NULL
 315          */
 316         if(idxData == NULL) {
 317             idxData = ((IWineD3DIndexBufferImpl *) This->stateBlock->pIndexData)->resource.allocatedMemory;
 318         }
 319
 320         if (idxSize == 2) pIdxBufS = (const WORD *) idxData;
 321         else pIdxBufL = (const DWORD *) idxData;
 322     }
 323
 324     /* Adding the stream offset once is cheaper than doing it every iteration. Do not modify the strided data, it is a pointer
 325      * to the strided Data in the device and might be needed intact on the next draw
 326      */
 327     for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 328         if(sd->u.s.texCoords[textureNo].lpData) {
 329             texCoords[textureNo] = sd->u.s.texCoords[textureNo].lpData + streamOffset[sd->u.s.texCoords[textureNo].streamNo];
 330         } else {
 331             texCoords[textureNo] = NULL;
 332         }
 333     }
 334     if(sd->u.s.diffuse.lpData) {
 335         diffuse = sd->u.s.diffuse.lpData + streamOffset[sd->u.s.diffuse.streamNo];
 336     }
 337     if(sd->u.s.specular.lpData) {
 338         specular = sd->u.s.specular.lpData + streamOffset[sd->u.s.specular.streamNo];
 339     }
 340     if(sd->u.s.normal.lpData) {
 341         normal = sd->u.s.normal.lpData + streamOffset[sd->u.s.normal.streamNo];
 342     }
 343     if(sd->u.s.position.lpData) {
 344         position = sd->u.s.position.lpData + streamOffset[sd->u.s.position.streamNo];
 345     }
 346
 347     /* Start drawing in GL */
 348     VTRACE(("glBegin(%x)\n", glPrimType));
 349     glBegin(glPrimType);
 350
 351     /* Default settings for data that is not passed */
 352     if (sd->u.s.normal.lpData == NULL) {
 353         glNormal3f(0, 0, 0);
 354     }
 355     if(sd->u.s.diffuse.lpData == NULL) {
 356         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 357     }
 358     if(sd->u.s.specular.lpData == NULL) {
 359         if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 360             GL_EXTCALL(glSecondaryColor3fEXT)(0, 0, 0);
 361         }
 362     }
 363
 364     /* We shouldn't start this function if any VBO is involved. Should I put a safety check here?
 365      * Guess it's not necessary(we crash then anyway) and would only eat CPU time
 366      */
 367
 368     /* For each primitive */
 369     for (vx_index = 0; vx_index < NumVertexes; ++vx_index) {
 370
 371         /* Initialize diffuse color */
 372         diffuseColor = 0xFFFFFFFF;
 373
 374         /* Blending data and Point sizes are not supported by this function. They are not supported by the fixed
 375          * function pipeline at all. A Fixme for them is printed after decoding the vertex declaration
 376          */
 377
 378         /* For indexed data, we need to go a few more strides in */
 379         if (idxData != NULL) {
 380
 381             /* Indexed so work out the number of strides to skip */
 382             if (idxSize == 2) {
 383                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufS[startIdx+vx_index]));
 384                 SkipnStrides = pIdxBufS[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 385             } else {
 386                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufL[startIdx+vx_index]));
 387                 SkipnStrides = pIdxBufL[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 388             }
 389         }
 390
 391         /* Texture coords --------------------------- */
 392         for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 393
 394             if (!GL_SUPPORT(ARB_MULTITEXTURE) && textureNo > 0) {
 395                 FIXME("Program using multiple concurrent textures which this opengl implementation doesn't support\n");
 396                 continue ;
 397             }
 398
 399             /* Query tex coords */
 400             if (This->stateBlock->textures[textureNo] != NULL) {
 401
 402                 int    coordIdx = This->stateBlock->textureState[textureNo][WINED3DTSS_TEXCOORDINDEX];
 403                 float *ptrToCoords = NULL;
 404                 float  s = 0.0, t = 0.0, r = 0.0, q = 0.0;
 405
 406                 if (coordIdx > 7) {
 407                     VTRACE(("tex: %d - Skip tex coords, as being system generated\n", textureNo));
 408                     continue;
 409                 } else if (coordIdx < 0) {
 410                     FIXME("tex: %d - Coord index %d is less than zero, expect a crash.\n", textureNo, coordIdx);
 411                     continue;
 412                 }
 413
 414                 ptrToCoords = (float *)(texCoords[coordIdx] + (SkipnStrides * sd->u.s.texCoords[coordIdx].dwStride));
 415                 if (texCoords[coordIdx] == NULL) {
 416                     TRACE("tex: %d - Skipping tex coords, as no data supplied\n", textureNo);
 417                     glTexCoord4f(0, 0, 0, 1);
 418                     continue;
 419                 } else {
 420                     int texture_idx = This->texUnitMap[textureNo];
 421                     int coordsToUse = sd->u.s.texCoords[coordIdx].dwType + 1; /* 0 == WINED3DDECLTYPE_FLOAT1 etc */
 422
 423                     if (texture_idx == -1) continue;
 424
 425                     /* The coords to supply depend completely on the fvf / vertex shader */
 426                     switch (coordsToUse) {
 427                     case 4: q = ptrToCoords[3]; /* drop through */
 428                     case 3: r = ptrToCoords[2]; /* drop through */
 429                     case 2: t = ptrToCoords[1]; /* drop through */
 430                     case 1: s = ptrToCoords[0];
 431                     }
 432
 433                     switch (coordsToUse) {   /* Supply the provided texture coords */
 434                     case WINED3DTTFF_COUNT1:
 435                         VTRACE(("tex:%d, s=%f\n", textureNo, s));
 436                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 437                             GL_EXTCALL(glMultiTexCoord1fARB(GL_TEXTURE0_ARB + texture_idx, s));
 438                         } else {
 439                             glTexCoord1f(s);
 440                         }
 441                         break;
 442                     case WINED3DTTFF_COUNT2:
 443                         VTRACE(("tex:%d, s=%f, t=%f\n", textureNo, s, t));
 444                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 445                             GL_EXTCALL(glMultiTexCoord2fARB(GL_TEXTURE0_ARB + texture_idx, s, t));
 446                         } else {
 447                             glTexCoord2f(s, t);
 448                         }
 449                         break;
 450                     case WINED3DTTFF_COUNT3:
 451                         VTRACE(("tex:%d, s=%f, t=%f, r=%f\n", textureNo, s, t, r));
 452                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 453                             GL_EXTCALL(glMultiTexCoord3fARB(GL_TEXTURE0_ARB + texture_idx, s, t, r));
 454                         } else {
 455                             glTexCoord3f(s, t, r);
 456                         }
 457                         break;
 458                     case WINED3DTTFF_COUNT4:
 459                         VTRACE(("tex:%d, s=%f, t=%f, r=%f, q=%f\n", textureNo, s, t, r, q));
 460                         if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 461                             GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + texture_idx, s, t, r, q));
 462                         } else {
 463                             glTexCoord4f(s, t, r, q);
 464                         }
 465                         break;
 466                     default:
 467                         FIXME("Should not get here as coordsToUse is two bits only (%x)!\n", coordsToUse);
 468                     }
 469                 }
 470             }
 471         } /* End of textures */
 472
 473         /* Diffuse -------------------------------- */
 474         if (diffuse) {
 475             DWORD *ptrToCoords = (DWORD *)(diffuse + (SkipnStrides * sd->u.s.diffuse.dwStride));
 476             diffuseColor = ptrToCoords[0];
 477             VTRACE(("diffuseColor=%lx\n", diffuseColor));
 478
 479             glColor4ub(D3DCOLOR_B_R(diffuseColor),
 480                      D3DCOLOR_B_G(diffuseColor),
 481                      D3DCOLOR_B_B(diffuseColor),
 482                      D3DCOLOR_B_A(diffuseColor));
 483             VTRACE(("glColor4ub: r,g,b,a=%lu,%lu,%lu,%lu\n",
 484                     D3DCOLOR_B_R(diffuseColor),
 485                     D3DCOLOR_B_G(diffuseColor),
 486                     D3DCOLOR_B_B(diffuseColor),
 487                     D3DCOLOR_B_A(diffuseColor)));
 488
 489             if(This->activeContext->num_untracked_materials) {
 490                 unsigned char i;
 491                 float color[4];
 492                 color[0] = D3DCOLOR_B_R(diffuseColor) / 255.0;
 493                 color[1] = D3DCOLOR_B_G(diffuseColor) / 255.0;
 494                 color[2] = D3DCOLOR_B_B(diffuseColor) / 255.0;
 495                 color[3] = D3DCOLOR_B_A(diffuseColor) / 255.0;
 496
 497                 for(i = 0; i < This->activeContext->num_untracked_materials; i++) {
 498                     glMaterialfv(GL_FRONT_AND_BACK, This->activeContext->untracked_materials[i], color);
 499                 }
 500             }
 501         }
 502
 503         /* Specular ------------------------------- */
 504         if (specular) {
 505             DWORD *ptrToCoords = (DWORD *)(specular + (SkipnStrides * sd->u.s.specular.dwStride));
 506             specularColor = ptrToCoords[0];
 507             VTRACE(("specularColor=%lx\n", specularColor));
 508
 509             /* special case where the fog density is stored in the specular alpha channel */
 510             if(This->stateBlock->renderState[WINED3DRS_FOGENABLE] &&
 511               (This->stateBlock->renderState[WINED3DRS_FOGVERTEXMODE] == WINED3DFOG_NONE || sd->u.s.position.dwType == WINED3DDECLTYPE_FLOAT4 )&&
 512               This->stateBlock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE) {
 513                 if(GL_SUPPORT(EXT_FOG_COORD)) {
 514                     GL_EXTCALL(glFogCoordfEXT(specularColor >> 24));
 515                 } else {
 516                     static BOOL warned = FALSE;
 517                     if(!warned) {
 518                         /* TODO: Use the fog table code from old ddraw */
 519                         FIXME("Implement fog for transformed vertices in software\n");
 520                         warned = TRUE;
 521                     }
 522                 }
 523             }
 524
 525             VTRACE(("glSecondaryColor4ub: r,g,b=%lu,%lu,%lu\n",
 526                     D3DCOLOR_B_R(specularColor),
 527                     D3DCOLOR_B_G(specularColor),
 528                     D3DCOLOR_B_B(specularColor)));
 529             if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 530                 GL_EXTCALL(glSecondaryColor3ubEXT)(
 531                            D3DCOLOR_B_R(specularColor),
 532                            D3DCOLOR_B_G(specularColor),
 533                            D3DCOLOR_B_B(specularColor));
 534             } else {
 535                 /* Do not worry if specular colour missing and disable request */
 536                 VTRACE(("Specular color extensions not supplied\n"));
 537             }
 538         }
 539
 540         /* Normal -------------------------------- */
 541         if (normal != NULL) {
 542             float *ptrToCoords = (float *)(normal + (SkipnStrides * sd->u.s.normal.dwStride));
 543
 544             VTRACE(("glNormal:nx,ny,nz=%f,%f,%f\n", ptrToCoords[0], ptrToCoords[1], ptrToCoords[2]));
 545             glNormal3f(ptrToCoords[0], ptrToCoords[1], ptrToCoords[2]);
 546         }
 547
 548         /* Position -------------------------------- */
 549         if (position) {
 550             float *ptrToCoords = (float *)(position + (SkipnStrides * sd->u.s.position.dwStride));
 551             x = ptrToCoords[0];
 552             y = ptrToCoords[1];
 553             z = ptrToCoords[2];
 554             rhw = 1.0;
 555             VTRACE(("x,y,z=%f,%f,%f\n", x,y,z));
 556
 557             /* RHW follows, only if transformed, ie 4 floats were provided */
 558             if (sd->u.s.position_transformed) {
 559                 rhw = ptrToCoords[3];
 560                 VTRACE(("rhw=%f\n", rhw));
 561             }
 562
 563             if (1.0f == rhw || ((rhw < eps) && (rhw > -eps))) {
 564                 VTRACE(("Vertex: glVertex:x,y,z=%f,%f,%f\n", x,y,z));
 565                 glVertex3f(x, y, z);
 566             } else {
 567                 GLfloat w = 1.0 / rhw;
 568                 VTRACE(("Vertex: glVertex:x,y,z=%f,%f,%f / rhw=%f\n", x,y,z,rhw));
 569                 glVertex4f(x*w, y*w, z*w, w);
 570             }
 571         }
 572
 573         /* For non indexed mode, step onto next parts */
 574         if (idxData == NULL) {
 575             ++SkipnStrides;
 576         }
 577     }
 578
 579     glEnd();
 580     checkGLcall("glEnd and previous calls");
 581 }
 582
 583 static void depth_blt(IWineD3DDevice *iface, GLuint texture) {
 584     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 585     GLint old_binding = 0;
 586
 587     glPushAttrib(GL_ENABLE_BIT | GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
 588
 589     glDisable(GL_CULL_FACE);
 590     glEnable(GL_BLEND);
 591     glDisable(GL_ALPHA_TEST);
 592     glDisable(GL_SCISSOR_TEST);
 593     glDisable(GL_STENCIL_TEST);
 594     glEnable(GL_DEPTH_TEST);
 595     glDepthFunc(GL_ALWAYS);
 596     glBlendFunc(GL_ZERO, GL_ONE);
 597
 598     GL_EXTCALL(glActiveTextureARB(GL_TEXTURE0_ARB));
 599     glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
 600     glBindTexture(GL_TEXTURE_2D, texture);
 601     glEnable(GL_TEXTURE_2D);
 602
 603     This->shader_backend->shader_select_depth_blt(iface);
 604
 605     glBegin(GL_TRIANGLE_STRIP);
 606     glVertex2f(-1.0f, -1.0f);
 607     glVertex2f(1.0f, -1.0f);
 608     glVertex2f(-1.0f, 1.0f);
 609     glVertex2f(1.0f, 1.0f);
 610     glEnd();
 611
 612     glBindTexture(GL_TEXTURE_2D, old_binding);
 613
 614     glPopAttrib();
 615
 616     /* Reselect the old shaders. There doesn't seem to be any glPushAttrib bit for arb shaders,
 617      * and this seems easier and more efficient than providing the shader backend with a private
 618      * storage to read and restore the old shader settings
 619      */
 620     This->shader_backend->shader_select(iface, use_ps(This), use_vs(This));
 621 }
 622
 623 static void depth_copy(IWineD3DDevice *iface) {
 624     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 625     IWineD3DSurfaceImpl *depth_stencil = (IWineD3DSurfaceImpl *)This->depthStencilBuffer;
 626
 627     /* Only copy the depth buffer if there is one. */
 628     if (!depth_stencil) return;
 629
 630     /* TODO: Make this work for modes other than FBO */
 631     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO) return;
 632
 633     if (depth_stencil->current_renderbuffer) {
 634         FIXME("Not supported with fixed up depth stencil\n");
 635         return;
 636     }
 637
 638     if (This->render_offscreen) {
 639         static GLuint tmp_texture = 0;
 640         GLint old_binding = 0;
 641
 642         TRACE("Copying onscreen depth buffer to offscreen surface\n");
 643
 644         if (!tmp_texture) {
 645             glGenTextures(1, &tmp_texture);
 646         }
 647
 648         /* Note that we use depth_blt here as well, rather than glCopyTexImage2D
 649          * directly on the FBO texture. That's because we need to flip. */
 650         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
 651         glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_binding);
 652         glBindTexture(GL_TEXTURE_2D, tmp_texture);
 653         glCopyTexImage2D(depth_stencil->glDescription.target,
 654                 depth_stencil->glDescription.level,
 655                 depth_stencil->glDescription.glFormatInternal,
 656                 0,
 657                 0,
 658                 depth_stencil->currentDesc.Width,
 659                 depth_stencil->currentDesc.Height,
 660                 0);
 661         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 662         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 663         glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE_ARB, GL_LUMINANCE);
 664         glBindTexture(GL_TEXTURE_2D, old_binding);
 665
 666         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, This->fbo));
 667         checkGLcall("glBindFramebuffer()");
 668         depth_blt(iface, tmp_texture);
 669         checkGLcall("depth_blt");
 670     } else {
 671         TRACE("Copying offscreen surface to onscreen depth buffer\n");
 672
 673         GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
 674         checkGLcall("glBindFramebuffer()");
 675         depth_blt(iface, depth_stencil->glDescription.textureName);
 676         checkGLcall("depth_blt");
 677     }
 678 }
 679
 680 static inline void drawStridedInstanced(IWineD3DDevice *iface, WineDirect3DVertexStridedData *sd, UINT numberOfVertices,
 681                                  GLenum glPrimitiveType, const void *idxData, short idxSize, ULONG minIndex,
 682                                  ULONG startIdx, ULONG startVertex) {
 683     UINT numInstances = 0;
 684     int numInstancedAttribs = 0, i, j;
 685     UINT instancedData[sizeof(sd->u.input) / sizeof(sd->u.input[0]) /* 16 */];
 686     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *) iface;
 687     IWineD3DStateBlockImpl *stateblock = This->stateBlock;
 688
 689     if (idxSize == 0) {
 690         /* This is a nasty thing. MSDN says no hardware supports that and apps have to use software vertex processing.
 691          * We don't support this for now
 692          *
 693          * Shouldn't be too hard to support with opengl, in theory just call glDrawArrays instead of drawElements.
 694          * But the StreamSourceFreq value has a different meaning in that situation.
 695          */
 696         FIXME("Non-indexed instanced drawing is not supported\n");
 697         return;
 698     }
 699
 700     TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 701     idxData = idxData == (void *)-1 ? NULL : idxData;
 702
 703     /* First, figure out how many instances we have to draw */
 704     for(i = 0; i < MAX_STREAMS; i++) {
 705         /* Look at all non-instanced streams */
 706         if(!(stateblock->streamFlags[i] & WINED3DSTREAMSOURCE_INSTANCEDATA) &&
 707            stateblock->streamSource[i]) {
 708             int inst = stateblock->streamFreq[i];
 709
 710             if(numInstances && inst != numInstances) {
 711                 ERR("Two streams specify a different number of instances. Got %d, new is %d\n", numInstances, inst);
 712             }
 713             numInstances = inst;
 714         }
 715     }
 716
 717     for(i = 0; i < sizeof(sd->u.input) / sizeof(sd->u.input[0]); i++) {
 718         if(stateblock->streamFlags[sd->u.input[i].streamNo] & WINED3DSTREAMSOURCE_INSTANCEDATA) {
 719             instancedData[numInstancedAttribs] = i;
 720             numInstancedAttribs++;
 721         }
 722     }
 723
 724     /* now draw numInstances instances :-) */
 725     for(i = 0; i < numInstances; i++) {
 726         /* Specify the instanced attributes using immediate mode calls */
 727         for(j = 0; j < numInstancedAttribs; j++) {
 728             BYTE *ptr = sd->u.input[instancedData[j]].lpData +
 729                         sd->u.input[instancedData[j]].dwStride * i +
 730                         stateblock->streamOffset[sd->u.input[instancedData[j]].streamNo];
 731             if(sd->u.input[instancedData[j]].VBO) {
 732                 IWineD3DVertexBufferImpl *vb = (IWineD3DVertexBufferImpl *) stateblock->streamSource[sd->u.input[instancedData[j]].streamNo];
 733                 ptr += (long) vb->resource.allocatedMemory;
 734             }
 735
 736             switch(sd->u.input[instancedData[j]].dwType) {
 737                 case WINED3DDECLTYPE_FLOAT1:
 738                     GL_EXTCALL(glVertexAttrib1fvARB(instancedData[j], (float *) ptr));
 739                     break;
 740                 case WINED3DDECLTYPE_FLOAT2:
 741                     GL_EXTCALL(glVertexAttrib2fvARB(instancedData[j], (float *) ptr));
 742                     break;
 743                 case WINED3DDECLTYPE_FLOAT3:
 744                     GL_EXTCALL(glVertexAttrib3fvARB(instancedData[j], (float *) ptr));
 745                     break;
 746                 case WINED3DDECLTYPE_FLOAT4:
 747                     GL_EXTCALL(glVertexAttrib4fvARB(instancedData[j], (float *) ptr));
 748                     break;
 749
 750                 case WINED3DDECLTYPE_UBYTE4:
 751                     GL_EXTCALL(glVertexAttrib4ubvARB(instancedData[j], ptr));
 752                     break;
 753                 case WINED3DDECLTYPE_UBYTE4N:
 754                 case WINED3DDECLTYPE_D3DCOLOR:
 755                     GL_EXTCALL(glVertexAttrib4NubvARB(instancedData[j], ptr));
 756                     break;
 757
 758                 case WINED3DDECLTYPE_SHORT2:
 759                     GL_EXTCALL(glVertexAttrib4svARB(instancedData[j], (GLshort *) ptr));
 760                     break;
 761                 case WINED3DDECLTYPE_SHORT4:
 762                     GL_EXTCALL(glVertexAttrib4svARB(instancedData[j], (GLshort *) ptr));
 763                     break;
 764
 765                 case WINED3DDECLTYPE_SHORT2N:
 766                 {
 767                     GLshort s[4] = {((short *) ptr)[0], ((short *) ptr)[1], 0, 1};
 768                     GL_EXTCALL(glVertexAttrib4NsvARB(instancedData[j], s));
 769                     break;
 770                 }
 771                 case WINED3DDECLTYPE_USHORT2N:
 772                 {
 773                     GLushort s[4] = {((unsigned short *) ptr)[0], ((unsigned short *) ptr)[1], 0, 1};
 774                     GL_EXTCALL(glVertexAttrib4NusvARB(instancedData[j], s));
 775                     break;
 776                 }
 777                 case WINED3DDECLTYPE_SHORT4N:
 778                     GL_EXTCALL(glVertexAttrib4NsvARB(instancedData[j], (GLshort *) ptr));
 779                     break;
 780                 case WINED3DDECLTYPE_USHORT4N:
 781                     GL_EXTCALL(glVertexAttrib4NusvARB(instancedData[j], (GLushort *) ptr));
 782                     break;
 783
 784                 case WINED3DDECLTYPE_UDEC3:
 785                     FIXME("Unsure about WINED3DDECLTYPE_UDEC3\n");
 786                     /*glVertexAttrib3usvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 787                     break;
 788                 case WINED3DDECLTYPE_DEC3N:
 789                     FIXME("Unsure about WINED3DDECLTYPE_DEC3N\n");
 790                     /*glVertexAttrib3NusvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 791                     break;
 792
 793                 case WINED3DDECLTYPE_FLOAT16_2:
 794                     /* Are those 16 bit floats. C doesn't have a 16 bit float type. I could read the single bits and calculate a 4
 795                      * byte float according to the IEEE standard
 796                      */
 797                     if (GL_SUPPORT(NV_HALF_FLOAT)) {
 798                         GL_EXTCALL(glVertexAttrib2hvNV(instancedData[j], (GLhalfNV *)ptr));
 799                     } else {
 800                         FIXME("Unsupported WINED3DDECLTYPE_FLOAT16_2\n");
 801                     }
 802                     break;
 803                 case WINED3DDECLTYPE_FLOAT16_4:
 804                     if (GL_SUPPORT(NV_HALF_FLOAT)) {
 805                         GL_EXTCALL(glVertexAttrib4hvNV(instancedData[j], (GLhalfNV *)ptr));
 806                     } else {
 807                         FIXME("Unsupported WINED3DDECLTYPE_FLOAT16_4\n");
 808                     }
 809                     break;
 810
 811                 case WINED3DDECLTYPE_UNUSED:
 812                 default:
 813                     ERR("Unexpected declaration in instanced attributes\n");
 814                     break;
 815             }
 816         }
 817
 818         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 819                     (const char *)idxData+(idxSize * startIdx));
 820         checkGLcall("glDrawElements");
 821     }
 822 }
 823
 824 struct coords {
 825     int x, y, z;
 826 };
 827
 828 void blt_to_drawable(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *surface) {
 829     struct coords coords[4];
 830     int low_coord;
 831
 832     /* TODO: This could be supported for lazy unlocking */
 833     if(!(surface->Flags & SFLAG_INTEXTURE)) {
 834         /* It is ok at init to be nowhere */
 835         if(!(surface->Flags & SFLAG_INSYSMEM)) {
 836             ERR("Blitting surfaces from sysmem not supported yet\n");
 837         }
 838         return;
 839     }
 840
 841     ActivateContext(This, This->render_targets[0], CTXUSAGE_BLIT);
 842     ENTER_GL();
 843
 844     if(surface->glDescription.target == GL_TEXTURE_2D) {
 845         glBindTexture(GL_TEXTURE_2D, surface->glDescription.textureName);
 846         checkGLcall("GL_TEXTURE_2D, This->glDescription.textureName)");
 847
 848         coords[0].x = 0;    coords[0].y = 0;    coords[0].z = 0;
 849         coords[1].x = 0;    coords[1].y = 1;    coords[1].z = 0;
 850         coords[2].x = 1;    coords[2].y = 1;    coords[2].z = 0;
 851         coords[3].x = 1;    coords[3].y = 0;    coords[3].z = 0;
 852
 853         low_coord = 0;
 854     } else {
 855         /* Must be a cube map */
 856         glDisable(GL_TEXTURE_2D);
 857         checkGLcall("glDisable(GL_TEXTURE_2D)");
 858         glEnable(GL_TEXTURE_CUBE_MAP_ARB);
 859         checkGLcall("glEnable(surface->glDescription.target)");
 860         glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, surface->glDescription.textureName);
 861         checkGLcall("GL_TEXTURE_CUBE_MAP_ARB, This->glDescription.textureName)");
 862
 863         switch(surface->glDescription.target) {
 864             case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
 865                 coords[0].x =  1;   coords[0].y = -1;   coords[0].z =  1;
 866                 coords[1].x =  1;   coords[1].y =  1;   coords[1].z =  1;
 867                 coords[2].x =  1;   coords[2].y =  1;   coords[2].z = -1;
 868                 coords[3].x =  1;   coords[3].y = -1;   coords[3].z = -1;
 869                 break;
 870
 871             case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
 872                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 873                 coords[1].x = -1;   coords[1].y =  1;   coords[1].z =  1;
 874                 coords[2].x = -1;   coords[2].y =  1;   coords[2].z = -1;
 875                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 876                 break;
 877
 878             case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
 879                 coords[0].x = -1;   coords[0].y =  1;   coords[0].z =  1;
 880                 coords[1].x =  1;   coords[1].y =  1;   coords[1].z =  1;
 881                 coords[2].x =  1;   coords[2].y =  1;   coords[2].z = -1;
 882                 coords[3].x = -1;   coords[3].y =  1;   coords[3].z = -1;
 883                 break;
 884
 885             case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
 886                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 887                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z =  1;
 888                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z = -1;
 889                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 890                 break;
 891
 892             case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
 893                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z =  1;
 894                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z =  1;
 895                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z =  1;
 896                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z =  1;
 897                 break;
 898
 899             case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
 900                 coords[0].x = -1;   coords[0].y = -1;   coords[0].z = -1;
 901                 coords[1].x =  1;   coords[1].y = -1;   coords[1].z = -1;
 902                 coords[2].x =  1;   coords[2].y = -1;   coords[2].z = -1;
 903                 coords[3].x = -1;   coords[3].y = -1;   coords[3].z = -1;
 904
 905             default:
 906                 ERR("Unexpected texture target\n");
 907                 LEAVE_GL();
 908                 return;
 909         }
 910
 911         low_coord = -1;
 912     }
 913
 914     if(This->render_offscreen) {
 915         coords[0].y = coords[0].y == 1 ? low_coord : 1;
 916         coords[1].y = coords[1].y == 1 ? low_coord : 1;
 917         coords[2].y = coords[2].y == 1 ? low_coord : 1;
 918         coords[3].y = coords[3].y == 1 ? low_coord : 1;
 919     }
 920
 921     glBegin(GL_QUADS);
 922         glTexCoord3iv((GLint *) &coords[0]);
 923         glVertex2i(0, 0);
 924
 925         glTexCoord3iv((GLint *) &coords[1]);
 926         glVertex2i(0, surface->pow2Height);
 927
 928         glTexCoord3iv((GLint *) &coords[2]);
 929         glVertex2i(surface->pow2Width, surface->pow2Height);
 930
 931         glTexCoord3iv((GLint *) &coords[3]);
 932         glVertex2i(surface->pow2Width, 0);
 933     glEnd();
 934     checkGLcall("glEnd");
 935
 936     if(surface->glDescription.target != GL_TEXTURE_2D) {
 937         glEnable(GL_TEXTURE_2D);
 938         checkGLcall("glEnable(GL_TEXTURE_2D)");
 939         glDisable(GL_TEXTURE_CUBE_MAP_ARB);
 940         checkGLcall("glDisable(GL_TEXTURE_CUBE_MAP_ARB)");
 941     }
 942     LEAVE_GL();
 943 }
 944
 945 /* Routine common to the draw primitive and draw indexed primitive routines */
 946 void drawPrimitive(IWineD3DDevice *iface,
 947                    int PrimitiveType,
 948                    long NumPrimitives,
 949                    /* for Indexed: */
 950                    long  StartVertexIndex,
 951                    UINT  numberOfVertices,
 952                    long  StartIdx,
 953                    short idxSize,
 954                    const void *idxData,
 955                    int   minIndex) {
 956
 957     IWineD3DDeviceImpl           *This = (IWineD3DDeviceImpl *)iface;
 958     IWineD3DSwapChain            *swapchain;
 959     IWineD3DBaseTexture          *texture = NULL;
 960     IWineD3DSurfaceImpl          *target;
 961     int i;
 962
 963     /* Signals other modules that a drawing is in progress and the stateblock finalized */
 964     This->isInDraw = TRUE;
 965
 966     /* Invalidate the back buffer memory so LockRect will read it the next time */
 967     for(i = 0; i < GL_LIMITS(buffers); i++) {
 968         target = (IWineD3DSurfaceImpl *) This->render_targets[i];
 969
 970         /* TODO: Only do all that if we're going to change anything
 971          * Texture container dirtification does not work quite right yet
 972          */
 973         if(target /*&& target->Flags & (SFLAG_INTEXTURE | SFLAG_INSYSMEM)*/) {
 974             swapchain = NULL;
 975             texture = NULL;
 976
 977             if(i == 0) {
 978                 IWineD3DSurface_GetContainer((IWineD3DSurface *) target, &IID_IWineD3DSwapChain, (void **)&swapchain);
 979
 980                 /* Need the surface in the drawable! */
 981                 if(!(target->Flags & SFLAG_INDRAWABLE) && (swapchain || wined3d_settings.offscreen_rendering_mode != ORM_FBO)) {
 982                     blt_to_drawable(This, target);
 983                 }
 984
 985                 if(swapchain) {
 986                     /* Onscreen target. Invalidate system memory copy and texture copy */
 987                     target->Flags &= ~(SFLAG_INSYSMEM | SFLAG_INTEXTURE);
 988                     target->Flags |= SFLAG_INDRAWABLE;
 989                     IWineD3DSwapChain_Release(swapchain);
 990                 } else if(wined3d_settings.offscreen_rendering_mode != ORM_FBO) {
 991                     /* Non-FBO target: Invalidate system copy, texture copy and dirtify the container */
 992                     IWineD3DSurface_GetContainer((IWineD3DSurface *) target, &IID_IWineD3DBaseTexture, (void **)&texture);
 993
 994                     if(texture) {
 995                         IWineD3DBaseTexture_SetDirty(texture, TRUE);
 996                         IWineD3DTexture_Release(texture);
 997                     }
 998
 999                     target->Flags &= ~(SFLAG_INSYSMEM | SFLAG_INTEXTURE);
1000                     target->Flags |= SFLAG_INDRAWABLE;
1001                 } else {
1002                     /* FBO offscreen target. Invalidate system memory copy */
1003                     target->Flags &= ~SFLAG_INSYSMEM;
1004                 }
1005             } else {
1006                 /* Must be an fbo render target */
1007                 target->Flags &= ~SFLAG_INSYSMEM;
1008                 target->Flags |=  SFLAG_INTEXTURE;
1009             }
1010         }
1011     }
1012
1013     /* Ok, we will be updating the screen from here onwards so grab the lock */
1014
1015     if (wined3d_settings.offscreen_rendering_mode == ORM_FBO) {
1016         ENTER_GL();
1017         apply_fbo_state(iface);
1018         LEAVE_GL();
1019     }
1020
1021     ActivateContext(This, This->render_targets[0], CTXUSAGE_DRAWPRIM);
1022     ENTER_GL();
1023
1024     if (This->depth_copy_state == WINED3D_DCS_COPY) {
1025         depth_copy(iface);
1026     }
1027     This->depth_copy_state = WINED3D_DCS_INITIAL;
1028
1029     {
1030         GLenum glPrimType;
1031         BOOL emulation = FALSE;
1032         WineDirect3DVertexStridedData *strided = &This->strided_streams;
1033         WineDirect3DVertexStridedData stridedlcl;
1034         /* Ok, Work out which primitive is requested and how many vertexes that
1035            will be                                                              */
1036         UINT calculatedNumberOfindices = primitiveToGl(PrimitiveType, NumPrimitives, &glPrimType);
1037         if (numberOfVertices == 0 )
1038             numberOfVertices = calculatedNumberOfindices;
1039
1040         if(!use_vs(This)) {
1041             if(!This->strided_streams.u.s.position_transformed && This->activeContext->num_untracked_materials &&
1042                 This->stateBlock->renderState[WINED3DRS_LIGHTING]) {
1043                 FIXME("Using software emulation because not all material properties could be tracked\n");
1044                 emulation = TRUE;
1045             }
1046             else if(This->activeContext->fog_coord && This->stateBlock->renderState[WINED3DRS_FOGENABLE]) {
1047                 /* Either write a pipeline replacement shader or convert the specular alpha from unsigned byte
1048                  * to a float in the vertex buffer
1049                  */
1050                 FIXME("Using software emulation because manual fog coordinates are provided\n");
1051                 emulation = TRUE;
1052             }
1053
1054             if(emulation) {
1055                 IWineD3DVertexBufferImpl *vb;
1056
1057                 strided = &stridedlcl;
1058                 memcpy(&stridedlcl, &This->strided_streams, sizeof(stridedlcl));
1059
1060 #define FIXVBO(type) \
1061 if(stridedlcl.u.s.type.VBO) { \
1062     vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[stridedlcl.u.s.type.streamNo]; \
1063     stridedlcl.u.s.type.VBO = 0; \
1064     stridedlcl.u.s.type.lpData = (BYTE *) ((unsigned long) stridedlcl.u.s.type.lpData + (unsigned long) vb->resource.allocatedMemory); \
1065 }
1066                 FIXVBO(position);
1067                 FIXVBO(blendWeights);
1068                 FIXVBO(blendMatrixIndices);
1069                 FIXVBO(normal);
1070                 FIXVBO(pSize);
1071                 FIXVBO(diffuse);
1072                 FIXVBO(specular);
1073                 for(i = 0; i < WINED3DDP_MAXTEXCOORD; i++) FIXVBO(texCoords[i]);
1074                 FIXVBO(position2);
1075                 FIXVBO(normal2);
1076                 FIXVBO(tangent);
1077                 FIXVBO(binormal);
1078                 FIXVBO(tessFactor);
1079                 FIXVBO(fog);
1080                 FIXVBO(depth);
1081                 FIXVBO(sample);
1082 #undef FIXVBO
1083             }
1084         }
1085
1086         if (This->useDrawStridedSlow || emulation) {
1087             /* Immediate mode drawing */
1088             drawStridedSlow(iface, strided, calculatedNumberOfindices,
1089                             glPrimType, idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1090         } else if(This->instancedDraw) {
1091             /* Instancing emulation with mixing immediate mode and arrays */
1092             drawStridedInstanced(iface, &This->strided_streams, calculatedNumberOfindices, glPrimType,
1093                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1094         } else {
1095             /* Simple array draw call */
1096             drawStridedFast(iface, calculatedNumberOfindices, glPrimType,
1097                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
1098         }
1099     }
1100
1101     /* Finshed updating the screen, restore lock */
1102     LEAVE_GL();
1103     TRACE("Done all gl drawing\n");
1104
1105     /* Diagnostics */
1106 #ifdef SHOW_FRAME_MAKEUP
1107     {
1108         static long int primCounter = 0;
1109         /* NOTE: set primCounter to the value reported by drawprim
1110            before you want to to write frame makeup to /tmp */
1111         if (primCounter >= 0) {
1112             WINED3DLOCKED_RECT r;
1113             char buffer[80];
1114             IWineD3DSurface_LockRect(This->renderTarget, &r, NULL, WINED3DLOCK_READONLY);
1115             sprintf(buffer, "/tmp/backbuffer_%d.tga", primCounter);
1116             TRACE("Saving screenshot %s\n", buffer);
1117             IWineD3DSurface_SaveSnapshot(This->renderTarget, buffer);
1118             IWineD3DSurface_UnlockRect(This->renderTarget);
1119
1120 #ifdef SHOW_TEXTURE_MAKEUP
1121            {
1122             IWineD3DSurface *pSur;
1123             int textureNo;
1124             for (textureNo = 0; textureNo < MAX_COMBINED_SAMPLERS; ++textureNo) {
1125                 if (This->stateBlock->textures[textureNo] != NULL) {
1126                     sprintf(buffer, "/tmp/texture_%p_%d_%d.tga", This->stateBlock->textures[textureNo], primCounter, textureNo);
1127                     TRACE("Saving texture %s\n", buffer);
1128                     if (IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]) == WINED3DRTYPE_TEXTURE) {
1129                             IWineD3DTexture_GetSurfaceLevel((IWineD3DTexture *)This->stateBlock->textures[textureNo], 0, &pSur);
1130                             IWineD3DSurface_SaveSnapshot(pSur, buffer);
1131                             IWineD3DSurface_Release(pSur);
1132                     } else  {
1133                         FIXME("base Texture isn't of type texture %d\n", IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]));
1134                     }
1135                 }
1136             }
1137            }
1138 #endif
1139         }
1140         TRACE("drawprim #%d\n", primCounter);
1141         ++primCounter;
1142     }
1143 #endif
1144
1145     /* Control goes back to the device, stateblock values may change again */
1146     This->isInDraw = FALSE;
1147 }
1148
1149 static void normalize_normal(float *n) {
1150     float length = n[0] * n[0] + n[1] * n[1] + n[2] * n[2];
1151     if(length == 0.0) return;
1152     length = sqrt(length);
1153     n[0] = n[0] / length;
1154     n[1] = n[1] / length;
1155     n[2] = n[2] / length;
1156 }
1157
1158 /* Tesselates a high order rectangular patch into single triangles using gl evaluators
1159  *
1160  * The problem is that OpenGL does not offer a direct way to return the tesselated primitives,
1161  * and they can't be sent off for rendering directly either. Tesselating is slow, so we want
1162  * to chache the patches in a vertex buffer. But more importantly, gl can't bind generated
1163  * attributes to numbered shader attributes, so we have to store them and rebind them as needed
1164  * in drawprim.
1165  *
1166  * To read back, the opengl feedback mode is used. This creates a proplem because we want
1167  * untransformed, unlit vertices, but feedback runs everything through transform and lighting.
1168  * Thus disable lighting and set identity matrices to get unmodified colors and positions.
1169  * To overcome clipping find the biggest x, y and z values of the vertices in the patch and scale
1170  * them to [-1.0;+1.0] and set the viewport up to scale them back.
1171  *
1172  * Normals are more tricky: Draw white vertices with 3 directional lights, and calculate the
1173  * resulting colors back to the normals.
1174  *
1175  * NOTE: This function activates a context for blitting, modifies matrices & viewport, but
1176  * does not restore it because normally a draw follows immediately afterwards. The caller is
1177  * responsible of taking care that either the gl states are restored, or the context activated
1178  * for drawing to reset the lastWasBlit flag.
1179  */
1180 HRESULT tesselate_rectpatch(IWineD3DDeviceImpl *This,
1181                             struct WineD3DRectPatch *patch) {
1182     unsigned int i, j, num_quads, out_vertex_size, buffer_size, d3d_out_vertex_size;
1183     float max_x = 0.0, max_y = 0.0, max_z = 0.0, neg_z = 0.0;
1184     WineDirect3DVertexStridedData strided;
1185     BYTE *data;
1186     WINED3DRECTPATCH_INFO *info = &patch->RectPatchInfo;
1187     DWORD vtxStride;
1188     GLenum feedback_type;
1189     GLfloat *feedbuffer;
1190
1191     /* First, locate the position data. This is provided in a vertex buffer in the stateblock.
1192      * Beware of vbos
1193      */
1194     memset(&strided, 0, sizeof(strided));
1195     primitiveDeclarationConvertToStridedData((IWineD3DDevice *) This, FALSE, &strided, NULL);
1196     if(strided.u.s.position.VBO) {
1197         IWineD3DVertexBufferImpl *vb;
1198         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[strided.u.s.position.streamNo];
1199         strided.u.s.position.lpData = (BYTE *) ((unsigned long) strided.u.s.position.lpData +
1200                                                 (unsigned long) vb->resource.allocatedMemory);
1201     }
1202     vtxStride = strided.u.s.position.dwStride;
1203     data = strided.u.s.position.lpData +
1204            vtxStride * info->Stride * info->StartVertexOffsetHeight +
1205            vtxStride * info->StartVertexOffsetWidth;
1206
1207     /* Not entirely sure about what happens with transformed vertices */
1208     if(strided.u.s.position_transformed) {
1209         FIXME("Transformed position in rectpatch generation\n");
1210     }
1211     if(vtxStride % sizeof(GLfloat)) {
1212         /* glMap2f reads vertex sizes in GLfloats, the d3d stride is in bytes.
1213          * I don't see how the stride could not be a multiple of 4, but make sure
1214          * to check it
1215          */
1216         ERR("Vertex stride is not a multiple of sizeof(GLfloat)\n");
1217     }
1218     if(info->Basis != WINED3DBASIS_BEZIER) {
1219         FIXME("Basis is %s, how to handle this?\n", debug_d3dbasis(info->Basis));
1220     }
1221     if(info->Degree != WINED3DDEGREE_CUBIC) {
1222         FIXME("Degree is %s, how to handle this?\n", debug_d3ddegree(info->Degree));
1223     }
1224
1225     /* First, get the boundary cube of the input data */
1226     for(j = 0; j < info->Height; j++) {
1227         for(i = 0; i < info->Width; i++) {
1228             float *v = (float *) (data + vtxStride * i + vtxStride * info->Stride * j);
1229             if(fabs(v[0]) > max_x) max_x = fabs(v[0]);
1230             if(fabs(v[1]) > max_y) max_y = fabs(v[1]);
1231             if(fabs(v[2]) > max_z) max_z = fabs(v[2]);
1232             if(v[2] < neg_z) neg_z = v[2];
1233         }
1234     }
1235
1236     /* This needs some improvements in the vertex decl code */
1237     FIXME("Cannot find data to generate. Only generating position and normals\n");
1238     patch->has_normals = TRUE;
1239     patch->has_texcoords = FALSE;
1240
1241     /* Simply activate the context for blitting. This disables all the things we don't want and
1242      * takes care of dirtifying. Dirtifying is preferred over pushing / popping, since drawing the
1243      * patch (as opposed to normal draws) will most likely need different changes anyway
1244      */
1245     ActivateContext(This, This->lastActiveRenderTarget, CTXUSAGE_BLIT);
1246     ENTER_GL();
1247
1248     glMatrixMode(GL_PROJECTION);
1249     checkGLcall("glMatrixMode(GL_PROJECTION)");
1250     glLoadIdentity();
1251     checkGLcall("glLoadIndentity()");
1252     glScalef(1 / (max_x) , 1 / (max_y), max_z == 0 ? 1 : 1 / ( 2 * max_z));
1253     glTranslatef(0, 0, 0.5);
1254     checkGLcall("glScalef");
1255     glViewport(-max_x, -max_y, 2 * (max_x), 2 * (max_y));
1256     checkGLcall("glViewport");
1257
1258     /* Some states to take care of. If we're in wireframe opengl will produce lines, and confuse
1259      * our feedback buffer parser
1260      */
1261     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1262     checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
1263     IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_FILLMODE));
1264     if(patch->has_normals) {
1265         float black[4] = {0, 0, 0, 0};
1266         float red[4]   = {1, 0, 0, 0};
1267         float green[4] = {0, 1, 0, 0};
1268         float blue[4]  = {0, 0, 1, 0};
1269         float white[4] = {1, 1, 1, 1};
1270         glEnable(GL_LIGHTING);
1271         checkGLcall("glEnable(GL_LIGHTING)");
1272         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
1273         checkGLcall("glLightModel for MODEL_AMBIENT");
1274         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_AMBIENT));
1275
1276         for(i = 3; i < GL_LIMITS(lights); i++) {
1277             glDisable(GL_LIGHT0 + i);
1278             checkGLcall("glDisable(GL_LIGHT0 + i)");
1279             IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(i));
1280         }
1281
1282         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(0));
1283         glLightfv(GL_LIGHT0, GL_DIFFUSE, red);
1284         glLightfv(GL_LIGHT0, GL_SPECULAR, black);
1285         glLightfv(GL_LIGHT0, GL_AMBIENT, black);
1286         glLightfv(GL_LIGHT0, GL_POSITION, red);
1287         glEnable(GL_LIGHT0);
1288         checkGLcall("Setting up light 1\n");
1289         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(1));
1290         glLightfv(GL_LIGHT1, GL_DIFFUSE, green);
1291         glLightfv(GL_LIGHT1, GL_SPECULAR, black);
1292         glLightfv(GL_LIGHT1, GL_AMBIENT, black);
1293         glLightfv(GL_LIGHT1, GL_POSITION, green);
1294         glEnable(GL_LIGHT1);
1295         checkGLcall("Setting up light 2\n");
1296         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(2));
1297         glLightfv(GL_LIGHT2, GL_DIFFUSE, blue);
1298         glLightfv(GL_LIGHT2, GL_SPECULAR, black);
1299         glLightfv(GL_LIGHT2, GL_AMBIENT, black);
1300         glLightfv(GL_LIGHT2, GL_POSITION, blue);
1301         glEnable(GL_LIGHT2);
1302         checkGLcall("Setting up light 3\n");
1303
1304         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_MATERIAL);
1305         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_COLORVERTEX));
1306         glDisable(GL_COLOR_MATERIAL);
1307         glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, black);
1308         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
1309         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
1310         checkGLcall("Setting up materials\n");
1311     }
1312
1313     /* Enable the needed maps.
1314      * GL_MAP2_VERTEX_3 is needed for positional data.
1315      * GL_AUTO_NORMAL to generate normals from the position. Do not use GL_MAP2_NORMAL.
1316      * GL_MAP2_TEXTURE_COORD_4 for texture coords
1317      */
1318     num_quads = ceilf(patch->numSegs[0]) * ceilf(patch->numSegs[1]);
1319     out_vertex_size = 3 /* position */;
1320     d3d_out_vertex_size = 3;
1321     glEnable(GL_MAP2_VERTEX_3);
1322     if(patch->has_normals && patch->has_texcoords) {
1323         FIXME("Texcoords not handled yet\n");
1324         feedback_type = GL_3D_COLOR_TEXTURE;
1325         out_vertex_size += 8;
1326         d3d_out_vertex_size += 7;
1327         glEnable(GL_AUTO_NORMAL);
1328         glEnable(GL_MAP2_TEXTURE_COORD_4);
1329     } else if(patch->has_texcoords) {
1330         FIXME("Texcoords not handled yet\n");
1331         feedback_type = GL_3D_COLOR_TEXTURE;
1332         out_vertex_size += 7;
1333         d3d_out_vertex_size += 4;
1334         glEnable(GL_MAP2_TEXTURE_COORD_4);
1335     } else if(patch->has_normals) {
1336         feedback_type = GL_3D_COLOR;
1337         out_vertex_size += 4;
1338         d3d_out_vertex_size += 3;
1339         glEnable(GL_AUTO_NORMAL);
1340     } else {
1341         feedback_type = GL_3D;
1342     }
1343     checkGLcall("glEnable vertex attrib generation");
1344
1345     buffer_size = num_quads * out_vertex_size * 2 /* triangle list */ * 3 /* verts per tri */
1346                    + 4 * num_quads /* 2 triangle markers per quad + num verts in tri */;
1347     feedbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, buffer_size * sizeof(float) * 8);
1348
1349     glMap2f(GL_MAP2_VERTEX_3,
1350             0, 1, vtxStride / sizeof(float), info->Width,
1351             0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1352             (float *) data);
1353     checkGLcall("glMap2f");
1354     if(patch->has_texcoords) {
1355         glMap2f(GL_MAP2_TEXTURE_COORD_4,
1356                 0, 1, vtxStride / sizeof(float), info->Width,
1357                 0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1358                 (float *) data);
1359         checkGLcall("glMap2f");
1360     }
1361     glMapGrid2f(ceilf(patch->numSegs[0]), 0.0, 1.0, ceilf(patch->numSegs[1]), 0.0, 1.0);
1362     checkGLcall("glMapGrid2f");
1363
1364     glFeedbackBuffer(buffer_size * 2, feedback_type, feedbuffer);
1365     checkGLcall("glFeedbackBuffer");
1366     glRenderMode(GL_FEEDBACK);
1367
1368     glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1369     checkGLcall("glEvalMesh2\n");
1370
1371     i = glRenderMode(GL_RENDER);
1372     if(i == -1) {
1373         ERR("Feedback failed. Expected %d elements back\n", buffer_size);
1374         Sleep(10000);
1375         HeapFree(GetProcessHeap(), 0, feedbuffer);
1376         return WINED3DERR_DRIVERINTERNALERROR;
1377     } else if(i != buffer_size) {
1378         ERR("Unexpected amount of elements returned. Expected %d, got %d\n", buffer_size, i);
1379         Sleep(10000);
1380         HeapFree(GetProcessHeap(), 0, feedbuffer);
1381         return WINED3DERR_DRIVERINTERNALERROR;
1382     } else {
1383         TRACE("Got %d elements as expected\n", i);
1384     }
1385
1386     HeapFree(GetProcessHeap(), 0, patch->mem);
1387     patch->mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_quads * 6 * d3d_out_vertex_size * sizeof(float) * 8);
1388     i = 0;
1389     for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1390         if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1391             ERR("Unexpected token: %f\n", feedbuffer[j]);
1392             continue;
1393         }
1394         if(feedbuffer[j + 1] != 3) {
1395             ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1396             continue;
1397         }
1398         /* Somehow there are different ideas about back / front facing, so fix up the
1399          * vertex order
1400          */
1401         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 2 + 2]; /* x, triangle 2 */
1402         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 2 + 3]; /* y, triangle 2 */
1403         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 2 + 4] - 0.5) * 4 * max_z; /* z, triangle 3 */
1404         if(patch->has_normals) {
1405             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 2 + 5];
1406             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 2 + 6];
1407             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 2 + 7];
1408         }
1409         i += d3d_out_vertex_size;
1410
1411         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 1 + 2]; /* x, triangle 2 */
1412         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 1 + 3]; /* y, triangle 2 */
1413         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 1 + 4] - 0.5) * 4 * max_z; /* z, triangle 2 */
1414         if(patch->has_normals) {
1415             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 1 + 5];
1416             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 1 + 6];
1417             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 1 + 7];
1418         }
1419         i += d3d_out_vertex_size;
1420
1421         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 0 + 2]; /* x, triangle 1 */
1422         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 0 + 3]; /* y, triangle 1 */
1423         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 0 + 4] - 0.5) * 4 * max_z; /* z, triangle 1 */
1424         if(patch->has_normals) {
1425             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 0 + 5];
1426             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 0 + 6];
1427             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 0 + 7];
1428         }
1429         i += d3d_out_vertex_size;
1430     }
1431
1432     if(patch->has_normals) {
1433         /* Now do the same with reverse light directions */
1434         float x[4] = {-1,  0,  0, 0};
1435         float y[4] = { 0, -1,  0, 0};
1436         float z[4] = { 0,  0, -1, 0};
1437         glLightfv(GL_LIGHT0, GL_POSITION, x);
1438         glLightfv(GL_LIGHT1, GL_POSITION, y);
1439         glLightfv(GL_LIGHT2, GL_POSITION, z);
1440         checkGLcall("Setting up reverse light directions\n");
1441
1442         glRenderMode(GL_FEEDBACK);
1443         checkGLcall("glRenderMode(GL_FEEDBACK)");
1444         glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1445         checkGLcall("glEvalMesh2\n");
1446         i = glRenderMode(GL_RENDER);
1447         checkGLcall("glRenderMode(GL_RENDER)");
1448
1449         i = 0;
1450         for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1451             if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1452                 ERR("Unexpected token: %f\n", feedbuffer[j]);
1453                 continue;
1454             }
1455             if(feedbuffer[j + 1] != 3) {
1456                 ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1457                 continue;
1458             }
1459             if(patch->mem[i + 3] == 0.0)
1460                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 2 + 5];
1461             if(patch->mem[i + 4] == 0.0)
1462                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 2 + 6];
1463             if(patch->mem[i + 5] == 0.0)
1464                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 2 + 7];
1465             normalize_normal(patch->mem + i + 3);
1466             i += d3d_out_vertex_size;
1467
1468             if(patch->mem[i + 3] == 0.0)
1469                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 1 + 5];
1470             if(patch->mem[i + 4] == 0.0)
1471                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 1 + 6];
1472             if(patch->mem[i + 5] == 0.0)
1473                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 1 + 7];
1474             normalize_normal(patch->mem + i + 3);
1475             i += d3d_out_vertex_size;
1476
1477             if(patch->mem[i + 3] == 0.0)
1478                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 0 + 5];
1479             if(patch->mem[i + 4] == 0.0)
1480                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 0 + 6];
1481             if(patch->mem[i + 5] == 0.0)
1482                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 0 + 7];
1483             normalize_normal(patch->mem + i + 3);
1484             i += d3d_out_vertex_size;
1485         }
1486     }
1487
1488     glDisable(GL_MAP2_VERTEX_3);
1489     glDisable(GL_AUTO_NORMAL);
1490     glDisable(GL_MAP2_NORMAL);
1491     glDisable(GL_MAP2_TEXTURE_COORD_4);
1492     checkGLcall("glDisable vertex attrib generation");
1493     LEAVE_GL();
1494
1495     HeapFree(GetProcessHeap(), 0, feedbuffer);
1496
1497     vtxStride = 3 * sizeof(float);
1498     if(patch->has_normals) {
1499         vtxStride += 3 * sizeof(float);
1500     }
1501     if(patch->has_texcoords) {
1502         vtxStride += 4 * sizeof(float);
1503     }
1504     memset(&patch->strided, 0, sizeof(&patch->strided));
1505     patch->strided.u.s.position.lpData = (BYTE *) patch->mem;
1506     patch->strided.u.s.position.dwStride = vtxStride;
1507     patch->strided.u.s.position.dwType = WINED3DDECLTYPE_FLOAT3;
1508     patch->strided.u.s.position.streamNo = 255;
1509
1510     if(patch->has_normals) {
1511         patch->strided.u.s.normal.lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1512         patch->strided.u.s.normal.dwStride = vtxStride;
1513         patch->strided.u.s.normal.dwType = WINED3DDECLTYPE_FLOAT3;
1514         patch->strided.u.s.normal.streamNo = 255;
1515     }
1516     if(patch->has_texcoords) {
1517         patch->strided.u.s.texCoords[0].lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1518         if(patch->has_normals) {
1519             patch->strided.u.s.texCoords[0].lpData += 3 * sizeof(float);
1520         }
1521         patch->strided.u.s.texCoords[0].dwStride = vtxStride;
1522         patch->strided.u.s.texCoords[0].dwType = WINED3DDECLTYPE_FLOAT4;
1523         /* MAX_STREAMS index points to an unused element in stateblock->streamOffsets which
1524          * always remains set to 0. Windows uses stream 255 here, but this is not visible to the
1525          * application.
1526          */
1527         patch->strided.u.s.texCoords[0].streamNo = MAX_STREAMS;
1528     }
1529
1530     return WINED3D_OK;
1531 }