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

   1 /*
   2  * WINED3D draw functions
   3  *
   4  * Copyright 2002-2004 Jason Edmeades
   5  * Copyright 2002-2004 Raphael Junqueira
   6  * Copyright 2004 Christian Costa
   7  * Copyright 2005 Oliver Stieber
   8  * Copyright 2006, 2008 Henri Verbeet
   9  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include "config.h"
  27 #include "wined3d_private.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(d3d_draw);
  30 #define GLINFO_LOCATION This->adapter->gl_info
  31
  32 #include <stdio.h>
  33 #include <math.h>
  34
  35 /* Issues the glBegin call for gl given the primitive type and count */
  36 static DWORD primitiveToGl(WINED3DPRIMITIVETYPE PrimitiveType,
  37                     DWORD            NumPrimitives,
  38                     GLenum          *primType)
  39 {
  40     DWORD   NumVertexes = NumPrimitives;
  41
  42     switch (PrimitiveType) {
  43     case WINED3DPT_POINTLIST:
  44         TRACE("POINTS\n");
  45         *primType   = GL_POINTS;
  46         NumVertexes = NumPrimitives;
  47         break;
  48
  49     case WINED3DPT_LINELIST:
  50         TRACE("LINES\n");
  51         *primType   = GL_LINES;
  52         NumVertexes = NumPrimitives * 2;
  53         break;
  54
  55     case WINED3DPT_LINESTRIP:
  56         TRACE("LINE_STRIP\n");
  57         *primType   = GL_LINE_STRIP;
  58         NumVertexes = NumPrimitives + 1;
  59         break;
  60
  61     case WINED3DPT_TRIANGLELIST:
  62         TRACE("TRIANGLES\n");
  63         *primType   = GL_TRIANGLES;
  64         NumVertexes = NumPrimitives * 3;
  65         break;
  66
  67     case WINED3DPT_TRIANGLESTRIP:
  68         TRACE("TRIANGLE_STRIP\n");
  69         *primType   = GL_TRIANGLE_STRIP;
  70         NumVertexes = NumPrimitives + 2;
  71         break;
  72
  73     case WINED3DPT_TRIANGLEFAN:
  74         TRACE("TRIANGLE_FAN\n");
  75         *primType   = GL_TRIANGLE_FAN;
  76         NumVertexes = NumPrimitives + 2;
  77         break;
  78
  79     default:
  80         FIXME("Unhandled primitive\n");
  81         *primType    = GL_POINTS;
  82         break;
  83     }
  84     return NumVertexes;
  85 }
  86
  87 static BOOL fixed_get_input(
  88     BYTE usage, BYTE usage_idx,
  89     unsigned int* regnum) {
  90
  91     *regnum = -1;
  92
  93     /* Those positions must have the order in the
  94      * named part of the strided data */
  95
  96     if ((usage == WINED3DDECLUSAGE_POSITION || usage == WINED3DDECLUSAGE_POSITIONT) && usage_idx == 0)
  97         *regnum = 0;
  98     else if (usage == WINED3DDECLUSAGE_BLENDWEIGHT && usage_idx == 0)
  99         *regnum = 1;
 100     else if (usage == WINED3DDECLUSAGE_BLENDINDICES && usage_idx == 0)
 101         *regnum = 2;
 102     else if (usage == WINED3DDECLUSAGE_NORMAL && usage_idx == 0)
 103         *regnum = 3;
 104     else if (usage == WINED3DDECLUSAGE_PSIZE && usage_idx == 0)
 105         *regnum = 4;
 106     else if (usage == WINED3DDECLUSAGE_COLOR && usage_idx == 0)
 107         *regnum = 5;
 108     else if (usage == WINED3DDECLUSAGE_COLOR && usage_idx == 1)
 109         *regnum = 6;
 110     else if (usage == WINED3DDECLUSAGE_TEXCOORD && usage_idx < WINED3DDP_MAXTEXCOORD)
 111         *regnum = 7 + usage_idx;
 112     else if ((usage == WINED3DDECLUSAGE_POSITION || usage == WINED3DDECLUSAGE_POSITIONT) && usage_idx == 1)
 113         *regnum = 7 + WINED3DDP_MAXTEXCOORD;
 114     else if (usage == WINED3DDECLUSAGE_NORMAL && usage_idx == 1)
 115         *regnum = 8 + WINED3DDP_MAXTEXCOORD;
 116     else if (usage == WINED3DDECLUSAGE_TANGENT && usage_idx == 0)
 117         *regnum = 9 + WINED3DDP_MAXTEXCOORD;
 118     else if (usage == WINED3DDECLUSAGE_BINORMAL && usage_idx == 0)
 119         *regnum = 10 + WINED3DDP_MAXTEXCOORD;
 120     else if (usage == WINED3DDECLUSAGE_TESSFACTOR && usage_idx == 0)
 121         *regnum = 11 + WINED3DDP_MAXTEXCOORD;
 122     else if (usage == WINED3DDECLUSAGE_FOG && usage_idx == 0)
 123         *regnum = 12 + WINED3DDP_MAXTEXCOORD;
 124     else if (usage == WINED3DDECLUSAGE_DEPTH && usage_idx == 0)
 125         *regnum = 13 + WINED3DDP_MAXTEXCOORD;
 126     else if (usage == WINED3DDECLUSAGE_SAMPLE && usage_idx == 0)
 127         *regnum = 14 + WINED3DDP_MAXTEXCOORD;
 128
 129     if (*regnum == -1) {
 130         FIXME("Unsupported input stream [usage=%s, usage_idx=%u]\n",
 131             debug_d3ddeclusage(usage), usage_idx);
 132         return FALSE;
 133     }
 134     return TRUE;
 135 }
 136
 137 void primitiveDeclarationConvertToStridedData(
 138      IWineD3DDevice *iface,
 139      BOOL useVertexShaderFunction,
 140      WineDirect3DVertexStridedData *strided,
 141      BOOL *fixup) {
 142
 143      /* We need to deal with frequency data!*/
 144
 145     const BYTE *data = NULL;
 146     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 147     IWineD3DVertexDeclarationImpl* vertexDeclaration = (IWineD3DVertexDeclarationImpl *)This->stateBlock->vertexDecl;
 148     unsigned int i;
 149     const WINED3DVERTEXELEMENT *element;
 150     DWORD stride;
 151     DWORD numPreloadStreams = This->stateBlock->streamIsUP ? 0 : vertexDeclaration->num_streams;
 152     const 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 (%u of %u)\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, const WineDirect3DVertexStridedData *sd, UINT NumVertexes,
 290         GLenum glPrimType, const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex)
 291 {
 292     unsigned int               textureNo    = 0;
 293     const WORD                *pIdxBufS     = NULL;
 294     const DWORD               *pIdxBufL     = NULL;
 295     ULONG                      vx_index;
 296     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
 297     const UINT *streamOffset = This->stateBlock->streamOffset;
 298     long                      SkipnStrides = startVertex + This->stateBlock->loadBaseVertexIndex;
 299     BOOL                      pixelShader = use_ps(This);
 300
 301     const BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
 302     const BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
 303
 304     TRACE("Using slow vertex array code\n");
 305
 306     /* Variable Initialization */
 307     if (idxSize != 0) {
 308         /* Immediate mode drawing can't make use of indices in a vbo - get the data from the index buffer.
 309          * If the index buffer has no vbo(not supported or other reason), or with user pointer drawing
 310          * idxData will be != NULL
 311          */
 312         if(idxData == NULL) {
 313             idxData = ((IWineD3DIndexBufferImpl *) This->stateBlock->pIndexData)->resource.allocatedMemory;
 314         }
 315
 316         if (idxSize == 2) pIdxBufS = (const WORD *) idxData;
 317         else pIdxBufL = (const DWORD *) idxData;
 318     } else if (idxData) {
 319         ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
 320         return;
 321     }
 322
 323     /* Adding the stream offset once is cheaper than doing it every iteration. Do not modify the strided data, it is a pointer
 324      * to the strided Data in the device and might be needed intact on the next draw
 325      */
 326     for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 327         if(sd->u.s.texCoords[textureNo].lpData) {
 328             texCoords[textureNo] = sd->u.s.texCoords[textureNo].lpData + streamOffset[sd->u.s.texCoords[textureNo].streamNo];
 329         } else {
 330             texCoords[textureNo] = NULL;
 331         }
 332     }
 333     if(sd->u.s.diffuse.lpData) {
 334         diffuse = sd->u.s.diffuse.lpData + streamOffset[sd->u.s.diffuse.streamNo];
 335     }
 336     if(sd->u.s.specular.lpData) {
 337         specular = sd->u.s.specular.lpData + streamOffset[sd->u.s.specular.streamNo];
 338     }
 339     if(sd->u.s.normal.lpData) {
 340         normal = sd->u.s.normal.lpData + streamOffset[sd->u.s.normal.streamNo];
 341     }
 342     if(sd->u.s.position.lpData) {
 343         position = sd->u.s.position.lpData + streamOffset[sd->u.s.position.streamNo];
 344     }
 345
 346     if(FIXME_ON(d3d_draw)) {
 347         if(specular && This->stateBlock->renderState[WINED3DRS_FOGENABLE] &&
 348            (This->stateBlock->renderState[WINED3DRS_FOGVERTEXMODE] == WINED3DFOG_NONE || sd->u.s.position_transformed )&&
 349            This->stateBlock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE) {
 350             if(GL_SUPPORT(EXT_FOG_COORD) && sd->u.s.specular.dwType != WINED3DDECLTYPE_D3DCOLOR) {
 351                 FIXME("Implement fog coordinates from %s\n", debug_d3ddecltype(sd->u.s.specular.dwType));
 352             }
 353         }
 354         if(This->activeContext->num_untracked_materials && sd->u.s.diffuse.dwType != WINED3DDECLTYPE_D3DCOLOR) {
 355             FIXME("Implement diffuse color tracking from %s\n", debug_d3ddecltype(sd->u.s.diffuse.dwType));
 356         }
 357     }
 358
 359     /* Start drawing in GL */
 360     VTRACE(("glBegin(%x)\n", glPrimType));
 361     glBegin(glPrimType);
 362
 363     /* Default settings for data that is not passed */
 364     if (sd->u.s.normal.lpData == NULL) {
 365         glNormal3f(0, 0, 0);
 366     }
 367     if(sd->u.s.diffuse.lpData == NULL) {
 368         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 369     }
 370     if(sd->u.s.specular.lpData == NULL) {
 371         if (GL_SUPPORT(EXT_SECONDARY_COLOR)) {
 372             GL_EXTCALL(glSecondaryColor3fEXT)(0, 0, 0);
 373         }
 374     }
 375
 376     /* We shouldn't start this function if any VBO is involved. Should I put a safety check here?
 377      * Guess it's not necessary(we crash then anyway) and would only eat CPU time
 378      */
 379
 380     /* For each primitive */
 381     for (vx_index = 0; vx_index < NumVertexes; ++vx_index) {
 382         /* Blending data and Point sizes are not supported by this function. They are not supported by the fixed
 383          * function pipeline at all. A Fixme for them is printed after decoding the vertex declaration
 384          */
 385
 386         /* For indexed data, we need to go a few more strides in */
 387         if (idxData != NULL) {
 388
 389             /* Indexed so work out the number of strides to skip */
 390             if (idxSize == 2) {
 391                 VTRACE(("Idx for vertex %u = %u\n", vx_index, pIdxBufS[startIdx+vx_index]));
 392                 SkipnStrides = pIdxBufS[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 393             } else {
 394                 VTRACE(("Idx for vertex %u = %u\n", vx_index, pIdxBufL[startIdx+vx_index]));
 395                 SkipnStrides = pIdxBufL[startIdx + vx_index] + This->stateBlock->loadBaseVertexIndex;
 396             }
 397         }
 398
 399         /* Texture coords --------------------------- */
 400         for (textureNo = 0; textureNo < GL_LIMITS(texture_stages); ++textureNo) {
 401
 402             if (!GL_SUPPORT(ARB_MULTITEXTURE) && textureNo > 0) {
 403                 FIXME("Program using multiple concurrent textures which this opengl implementation doesn't support\n");
 404                 continue ;
 405             }
 406
 407             /* Query tex coords */
 408             if (This->stateBlock->textures[textureNo] != NULL || pixelShader) {
 409                 int    coordIdx = This->stateBlock->textureState[textureNo][WINED3DTSS_TEXCOORDINDEX];
 410                 int texture_idx = This->texUnitMap[textureNo];
 411                 const void *ptrToCoords;
 412
 413                 if (coordIdx > 7) {
 414                     VTRACE(("tex: %d - Skip tex coords, as being system generated\n", textureNo));
 415                     continue;
 416                 } else if (coordIdx < 0) {
 417                     FIXME("tex: %d - Coord index %d is less than zero, expect a crash.\n", textureNo, coordIdx);
 418                     continue;
 419                 }
 420
 421                 if (texture_idx == -1) continue;
 422
 423                 if (texCoords[coordIdx] == NULL) {
 424                     TRACE("tex: %d - Skipping tex coords, as no data supplied\n", textureNo);
 425                     if (GL_SUPPORT(ARB_MULTITEXTURE)) {
 426                         GL_EXTCALL(glMultiTexCoord4fARB(GL_TEXTURE0_ARB + texture_idx, 0, 0, 0, 1));
 427                     } else {
 428                         glTexCoord4f(0, 0, 0, 1);
 429                     }
 430                     continue;
 431                 }
 432
 433                 ptrToCoords = texCoords[coordIdx] + (SkipnStrides * sd->u.s.texCoords[coordIdx].dwStride);
 434                 if (GL_SUPPORT(ARB_MULTITEXTURE))
 435                     multi_texcoord_funcs[sd->u.s.texCoords[coordIdx].dwType](GL_TEXTURE0_ARB + texture_idx, ptrToCoords);
 436                 else
 437                     texcoord_funcs[sd->u.s.texCoords[coordIdx].dwType](ptrToCoords);
 438             }
 439         } /* End of textures */
 440
 441         /* Diffuse -------------------------------- */
 442         if (diffuse) {
 443             const void *ptrToCoords = diffuse + SkipnStrides * sd->u.s.diffuse.dwStride;
 444
 445             diffuse_funcs[sd->u.s.diffuse.dwType](ptrToCoords);
 446             if(This->activeContext->num_untracked_materials) {
 447                 DWORD diffuseColor = ((const DWORD *)ptrToCoords)[0];
 448                 unsigned char i;
 449                 float color[4];
 450
 451                 color[0] = D3DCOLOR_B_R(diffuseColor) / 255.0;
 452                 color[1] = D3DCOLOR_B_G(diffuseColor) / 255.0;
 453                 color[2] = D3DCOLOR_B_B(diffuseColor) / 255.0;
 454                 color[3] = D3DCOLOR_B_A(diffuseColor) / 255.0;
 455
 456                 for(i = 0; i < This->activeContext->num_untracked_materials; i++) {
 457                     glMaterialfv(GL_FRONT_AND_BACK, This->activeContext->untracked_materials[i], color);
 458                 }
 459             }
 460         }
 461
 462         /* Specular ------------------------------- */
 463         if (specular) {
 464             const void *ptrToCoords = specular + SkipnStrides * sd->u.s.specular.dwStride;
 465
 466             /* special case where the fog density is stored in the specular alpha channel */
 467             if(This->stateBlock->renderState[WINED3DRS_FOGENABLE] &&
 468               (This->stateBlock->renderState[WINED3DRS_FOGVERTEXMODE] == WINED3DFOG_NONE || sd->u.s.position.dwType == WINED3DDECLTYPE_FLOAT4 )&&
 469               This->stateBlock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE) {
 470                 if(GL_SUPPORT(EXT_FOG_COORD)) {
 471                     DWORD specularColor = ((const DWORD *)ptrToCoords)[0];
 472                     GL_EXTCALL(glFogCoordfEXT(specularColor >> 24));
 473                 } else {
 474                     static BOOL warned = FALSE;
 475                     if(!warned) {
 476                         /* TODO: Use the fog table code from old ddraw */
 477                         FIXME("Implement fog for transformed vertices in software\n");
 478                         warned = TRUE;
 479                     }
 480                 }
 481             }
 482
 483             specular_funcs[sd->u.s.specular.dwType](ptrToCoords);
 484         }
 485
 486         /* Normal -------------------------------- */
 487         if (normal != NULL) {
 488             const void *ptrToCoords = normal + SkipnStrides * sd->u.s.normal.dwStride;
 489             normal_funcs[sd->u.s.normal.dwType](ptrToCoords);
 490         }
 491
 492         /* Position -------------------------------- */
 493         if (position) {
 494             const void *ptrToCoords = position + SkipnStrides * sd->u.s.position.dwStride;
 495             position_funcs[sd->u.s.position.dwType](ptrToCoords);
 496         }
 497
 498         /* For non indexed mode, step onto next parts */
 499         if (idxData == NULL) {
 500             ++SkipnStrides;
 501         }
 502     }
 503
 504     glEnd();
 505     checkGLcall("glEnd and previous calls");
 506 }
 507
 508 static inline void send_attribute(IWineD3DDeviceImpl *This, const DWORD type, const UINT index, const void *ptr) {
 509     switch(type) {
 510         case WINED3DDECLTYPE_FLOAT1:
 511             GL_EXTCALL(glVertexAttrib1fvARB(index, (const float *)ptr));
 512             break;
 513         case WINED3DDECLTYPE_FLOAT2:
 514             GL_EXTCALL(glVertexAttrib2fvARB(index, (const float *)ptr));
 515             break;
 516         case WINED3DDECLTYPE_FLOAT3:
 517             GL_EXTCALL(glVertexAttrib3fvARB(index, (const float *)ptr));
 518             break;
 519         case WINED3DDECLTYPE_FLOAT4:
 520             GL_EXTCALL(glVertexAttrib4fvARB(index, (const float *)ptr));
 521             break;
 522
 523         case WINED3DDECLTYPE_UBYTE4:
 524             GL_EXTCALL(glVertexAttrib4ubvARB(index, ptr));
 525             break;
 526         case WINED3DDECLTYPE_UBYTE4N:
 527         case WINED3DDECLTYPE_D3DCOLOR:
 528             GL_EXTCALL(glVertexAttrib4NubvARB(index, ptr));
 529             break;
 530
 531         case WINED3DDECLTYPE_SHORT2:
 532             GL_EXTCALL(glVertexAttrib4svARB(index, (const GLshort *)ptr));
 533             break;
 534         case WINED3DDECLTYPE_SHORT4:
 535             GL_EXTCALL(glVertexAttrib4svARB(index, (const GLshort *)ptr));
 536             break;
 537
 538         case WINED3DDECLTYPE_SHORT2N:
 539         {
 540             GLshort s[4] = {((const GLshort *)ptr)[0], ((const GLshort *)ptr)[1], 0, 1};
 541             GL_EXTCALL(glVertexAttrib4NsvARB(index, s));
 542             break;
 543         }
 544         case WINED3DDECLTYPE_USHORT2N:
 545         {
 546             GLushort s[4] = {((const GLushort *)ptr)[0], ((const GLushort *)ptr)[1], 0, 1};
 547             GL_EXTCALL(glVertexAttrib4NusvARB(index, s));
 548             break;
 549         }
 550         case WINED3DDECLTYPE_SHORT4N:
 551             GL_EXTCALL(glVertexAttrib4NsvARB(index, (const GLshort *)ptr));
 552             break;
 553         case WINED3DDECLTYPE_USHORT4N:
 554             GL_EXTCALL(glVertexAttrib4NusvARB(index, (const GLushort *)ptr));
 555             break;
 556
 557         case WINED3DDECLTYPE_UDEC3:
 558             FIXME("Unsure about WINED3DDECLTYPE_UDEC3\n");
 559             /*glVertexAttrib3usvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 560             break;
 561         case WINED3DDECLTYPE_DEC3N:
 562             FIXME("Unsure about WINED3DDECLTYPE_DEC3N\n");
 563             /*glVertexAttrib3NusvARB(instancedData[j], (GLushort *) ptr); Does not exist */
 564             break;
 565
 566         case WINED3DDECLTYPE_FLOAT16_2:
 567             /* Are those 16 bit floats. C doesn't have a 16 bit float type. I could read the single bits and calculate a 4
 568              * byte float according to the IEEE standard
 569              */
 570             if (GL_SUPPORT(NV_HALF_FLOAT)) {
 571                 GL_EXTCALL(glVertexAttrib2hvNV(index, (const GLhalfNV *)ptr));
 572             } else {
 573                 float x = float_16_to_32(((const unsigned short *)ptr) + 0);
 574                 float y = float_16_to_32(((const unsigned short *)ptr) + 1);
 575                 GL_EXTCALL(glVertexAttrib2fARB(index, x, y));
 576             }
 577             break;
 578         case WINED3DDECLTYPE_FLOAT16_4:
 579             if (GL_SUPPORT(NV_HALF_FLOAT)) {
 580                 GL_EXTCALL(glVertexAttrib4hvNV(index, (const GLhalfNV *)ptr));
 581             } else {
 582                 float x = float_16_to_32(((const unsigned short *)ptr) + 0);
 583                 float y = float_16_to_32(((const unsigned short *)ptr) + 1);
 584                 float z = float_16_to_32(((const unsigned short *)ptr) + 2);
 585                 float w = float_16_to_32(((const unsigned short *)ptr) + 3);
 586                 GL_EXTCALL(glVertexAttrib4fARB(index, x, y, z, w));
 587             }
 588             break;
 589
 590         case WINED3DDECLTYPE_UNUSED:
 591         default:
 592             ERR("Unexpected attribute declaration: %d\n", type);
 593             break;
 594     }
 595 }
 596
 597 static void drawStridedSlowVs(IWineD3DDevice *iface, const WineDirect3DVertexStridedData *sd, UINT numberOfVertices,
 598         GLenum glPrimitiveType, const void *idxData, short idxSize, ULONG minIndex, ULONG startIdx, ULONG startVertex)
 599 {
 600     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *) iface;
 601     long                      SkipnStrides = startVertex + This->stateBlock->loadBaseVertexIndex;
 602     const WORD                *pIdxBufS     = NULL;
 603     const DWORD               *pIdxBufL     = NULL;
 604     ULONG                      vx_index;
 605     int i;
 606     IWineD3DStateBlockImpl *stateblock = This->stateBlock;
 607     const BYTE *ptr;
 608
 609     if (idxSize != 0) {
 610         /* Immediate mode drawing can't make use of indices in a vbo - get the data from the index buffer.
 611          * If the index buffer has no vbo(not supported or other reason), or with user pointer drawing
 612          * idxData will be != NULL
 613          */
 614         if(idxData == NULL) {
 615             idxData = ((IWineD3DIndexBufferImpl *) stateblock->pIndexData)->resource.allocatedMemory;
 616         }
 617
 618         if (idxSize == 2) pIdxBufS = (const WORD *) idxData;
 619         else pIdxBufL = (const DWORD *) idxData;
 620     } else if (idxData) {
 621         ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
 622         return;
 623     }
 624
 625     /* Start drawing in GL */
 626     VTRACE(("glBegin(%x)\n", glPrimitiveType));
 627     glBegin(glPrimitiveType);
 628
 629     for (vx_index = 0; vx_index < numberOfVertices; ++vx_index) {
 630         if (idxData != NULL) {
 631
 632             /* Indexed so work out the number of strides to skip */
 633             if (idxSize == 2) {
 634                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufS[startIdx+vx_index]));
 635                 SkipnStrides = pIdxBufS[startIdx + vx_index] + stateblock->loadBaseVertexIndex;
 636             } else {
 637                 VTRACE(("Idx for vertex %d = %d\n", vx_index, pIdxBufL[startIdx+vx_index]));
 638                 SkipnStrides = pIdxBufL[startIdx + vx_index] + stateblock->loadBaseVertexIndex;
 639             }
 640         }
 641
 642         for(i = MAX_ATTRIBS - 1; i >= 0; i--) {
 643             if(!sd->u.input[i].lpData) continue;
 644
 645             ptr = sd->u.input[i].lpData +
 646                   sd->u.input[i].dwStride * SkipnStrides +
 647                   stateblock->streamOffset[sd->u.input[i].streamNo];
 648
 649             send_attribute(This, sd->u.input[i].dwType, i, ptr);
 650         }
 651         SkipnStrides++;
 652     }
 653
 654     glEnd();
 655 }
 656
 657 static inline void drawStridedInstanced(IWineD3DDevice *iface, const WineDirect3DVertexStridedData *sd,
 658         UINT numberOfVertices, GLenum glPrimitiveType, const void *idxData, short idxSize, ULONG minIndex,
 659         ULONG startIdx, ULONG startVertex)
 660 {
 661     UINT numInstances = 0, i;
 662     int numInstancedAttribs = 0, j;
 663     UINT instancedData[sizeof(sd->u.input) / sizeof(sd->u.input[0]) /* 16 */];
 664     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *) iface;
 665     IWineD3DStateBlockImpl *stateblock = This->stateBlock;
 666
 667     if (idxSize == 0) {
 668         /* This is a nasty thing. MSDN says no hardware supports that and apps have to use software vertex processing.
 669          * We don't support this for now
 670          *
 671          * Shouldn't be too hard to support with opengl, in theory just call glDrawArrays instead of drawElements.
 672          * But the StreamSourceFreq value has a different meaning in that situation.
 673          */
 674         FIXME("Non-indexed instanced drawing is not supported\n");
 675         return;
 676     }
 677
 678     TRACE("(%p) : glElements(%x, %d, %d, ...)\n", This, glPrimitiveType, numberOfVertices, minIndex);
 679     idxData = idxData == (void *)-1 ? NULL : idxData;
 680
 681     /* First, figure out how many instances we have to draw */
 682     for(i = 0; i < MAX_STREAMS; i++) {
 683         /* Look at the streams and take the first one which matches */
 684         if(((stateblock->streamFlags[i] & WINED3DSTREAMSOURCE_INSTANCEDATA) || (stateblock->streamFlags[i] & WINED3DSTREAMSOURCE_INDEXEDDATA)) && stateblock->streamSource[i]) {
 685             /* D3D9 could set streamFreq 0 with (INSTANCEDATA or INDEXEDDATA) and then it is handled as 1. See d3d9/tests/visual.c-> stream_test() */
 686             if(stateblock->streamFreq[i] == 0){
 687                 numInstances = 1;
 688             } else {
 689                 numInstances = stateblock->streamFreq[i]; /* use the specified number of instances from the first matched stream. See d3d9/tests/visual.c-> stream_test() */
 690             }
 691             break; /* break, because only the first suitable value is interesting */
 692         }
 693     }
 694
 695     for(i = 0; i < sizeof(sd->u.input) / sizeof(sd->u.input[0]); i++) {
 696         if(stateblock->streamFlags[sd->u.input[i].streamNo] & WINED3DSTREAMSOURCE_INSTANCEDATA) {
 697             instancedData[numInstancedAttribs] = i;
 698             numInstancedAttribs++;
 699         }
 700     }
 701
 702     /* now draw numInstances instances :-) */
 703     for(i = 0; i < numInstances; i++) {
 704         /* Specify the instanced attributes using immediate mode calls */
 705         for(j = 0; j < numInstancedAttribs; j++) {
 706             const BYTE *ptr = sd->u.input[instancedData[j]].lpData +
 707                         sd->u.input[instancedData[j]].dwStride * i +
 708                         stateblock->streamOffset[sd->u.input[instancedData[j]].streamNo];
 709             if(sd->u.input[instancedData[j]].VBO) {
 710                 IWineD3DVertexBufferImpl *vb = (IWineD3DVertexBufferImpl *) stateblock->streamSource[sd->u.input[instancedData[j]].streamNo];
 711                 ptr += (long) vb->resource.allocatedMemory;
 712             }
 713
 714             send_attribute(This, sd->u.input[instancedData[j]].dwType, instancedData[j], ptr);
 715         }
 716
 717         glDrawElements(glPrimitiveType, numberOfVertices, idxSize == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT,
 718                     (const char *)idxData+(idxSize * startIdx));
 719         checkGLcall("glDrawElements");
 720     }
 721 }
 722
 723 static inline void remove_vbos(IWineD3DDeviceImpl *This, WineDirect3DVertexStridedData *s) {
 724     unsigned char i;
 725     IWineD3DVertexBufferImpl *vb;
 726
 727     if(s->u.s.position.VBO) {
 728         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.position.streamNo];
 729         s->u.s.position.VBO = 0;
 730         s->u.s.position.lpData = (BYTE *) ((unsigned long) s->u.s.position.lpData + (unsigned long) vb->resource.allocatedMemory);
 731     }
 732     if(s->u.s.blendWeights.VBO) {
 733         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.blendWeights.streamNo];
 734         s->u.s.blendWeights.VBO = 0;
 735         s->u.s.blendWeights.lpData = (BYTE *) ((unsigned long) s->u.s.blendWeights.lpData + (unsigned long) vb->resource.allocatedMemory);
 736     }
 737     if(s->u.s.blendMatrixIndices.VBO) {
 738         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.blendMatrixIndices.streamNo];
 739         s->u.s.blendMatrixIndices.VBO = 0;
 740         s->u.s.blendMatrixIndices.lpData = (BYTE *) ((unsigned long) s->u.s.blendMatrixIndices.lpData + (unsigned long) vb->resource.allocatedMemory);
 741     }
 742     if(s->u.s.normal.VBO) {
 743         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.normal.streamNo];
 744         s->u.s.normal.VBO = 0;
 745         s->u.s.normal.lpData = (BYTE *) ((unsigned long) s->u.s.normal.lpData + (unsigned long) vb->resource.allocatedMemory);
 746     }
 747     if(s->u.s.pSize.VBO) {
 748         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.pSize.streamNo];
 749         s->u.s.pSize.VBO = 0;
 750         s->u.s.pSize.lpData = (BYTE *) ((unsigned long) s->u.s.pSize.lpData + (unsigned long) vb->resource.allocatedMemory);
 751     }
 752     if(s->u.s.diffuse.VBO) {
 753         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.diffuse.streamNo];
 754         s->u.s.diffuse.VBO = 0;
 755         s->u.s.diffuse.lpData = (BYTE *) ((unsigned long) s->u.s.diffuse.lpData + (unsigned long) vb->resource.allocatedMemory);
 756     }
 757     if(s->u.s.specular.VBO) {
 758         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.specular.streamNo];
 759         s->u.s.specular.VBO = 0;
 760         s->u.s.specular.lpData = (BYTE *) ((unsigned long) s->u.s.specular.lpData + (unsigned long) vb->resource.allocatedMemory);
 761     }
 762     for(i = 0; i < WINED3DDP_MAXTEXCOORD; i++) {
 763         if(s->u.s.texCoords[i].VBO) {
 764             vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.texCoords[i].streamNo];
 765             s->u.s.texCoords[i].VBO = 0;
 766             s->u.s.texCoords[i].lpData = (BYTE *) ((unsigned long) s->u.s.texCoords[i].lpData + (unsigned long) vb->resource.allocatedMemory);
 767         }
 768     }
 769     if(s->u.s.position2.VBO) {
 770         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.position2.streamNo];
 771         s->u.s.position2.VBO = 0;
 772         s->u.s.position2.lpData = (BYTE *) ((unsigned long) s->u.s.position2.lpData + (unsigned long) vb->resource.allocatedMemory);
 773     }
 774     if(s->u.s.normal2.VBO) {
 775         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.normal2.streamNo];
 776         s->u.s.normal2.VBO = 0;
 777         s->u.s.normal2.lpData = (BYTE *) ((unsigned long) s->u.s.normal2.lpData + (unsigned long) vb->resource.allocatedMemory);
 778     }
 779     if(s->u.s.tangent.VBO) {
 780         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.tangent.streamNo];
 781         s->u.s.tangent.VBO = 0;
 782         s->u.s.tangent.lpData = (BYTE *) ((unsigned long) s->u.s.tangent.lpData + (unsigned long) vb->resource.allocatedMemory);
 783     }
 784     if(s->u.s.binormal.VBO) {
 785         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.binormal.streamNo];
 786         s->u.s.binormal.VBO = 0;
 787         s->u.s.binormal.lpData = (BYTE *) ((unsigned long) s->u.s.binormal.lpData + (unsigned long) vb->resource.allocatedMemory);
 788     }
 789     if(s->u.s.tessFactor.VBO) {
 790         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.tessFactor.streamNo];
 791         s->u.s.tessFactor.VBO = 0;
 792         s->u.s.tessFactor.lpData = (BYTE *) ((unsigned long) s->u.s.tessFactor.lpData + (unsigned long) vb->resource.allocatedMemory);
 793     }
 794     if(s->u.s.fog.VBO) {
 795         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.fog.streamNo];
 796         s->u.s.fog.VBO = 0;
 797         s->u.s.fog.lpData = (BYTE *) ((unsigned long) s->u.s.fog.lpData + (unsigned long) vb->resource.allocatedMemory);
 798     }
 799     if(s->u.s.depth.VBO) {
 800         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.depth.streamNo];
 801         s->u.s.depth.VBO = 0;
 802         s->u.s.depth.lpData = (BYTE *) ((unsigned long) s->u.s.depth.lpData + (unsigned long) vb->resource.allocatedMemory);
 803     }
 804     if(s->u.s.sample.VBO) {
 805         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[s->u.s.sample.streamNo];
 806         s->u.s.sample.VBO = 0;
 807         s->u.s.sample.lpData = (BYTE *) ((unsigned long) s->u.s.sample.lpData + (unsigned long) vb->resource.allocatedMemory);
 808     }
 809 }
 810
 811 /* Routine common to the draw primitive and draw indexed primitive routines */
 812 void drawPrimitive(IWineD3DDevice *iface,
 813                    int PrimitiveType,
 814                    long NumPrimitives,
 815                    /* for Indexed: */
 816                    long  StartVertexIndex,
 817                    UINT  numberOfVertices,
 818                    long  StartIdx,
 819                    short idxSize,
 820                    const void *idxData,
 821                    int   minIndex) {
 822
 823     IWineD3DDeviceImpl           *This = (IWineD3DDeviceImpl *)iface;
 824     IWineD3DSurfaceImpl          *target;
 825     unsigned int i;
 826
 827     if (NumPrimitives == 0) return;
 828
 829     /* Invalidate the back buffer memory so LockRect will read it the next time */
 830     for(i = 0; i < GL_LIMITS(buffers); i++) {
 831         target = (IWineD3DSurfaceImpl *) This->render_targets[i];
 832         if (target) {
 833             IWineD3DSurface_LoadLocation((IWineD3DSurface *) target, SFLAG_INDRAWABLE, NULL);
 834             IWineD3DSurface_ModifyLocation((IWineD3DSurface *) target, SFLAG_INDRAWABLE, TRUE);
 835         }
 836     }
 837
 838     /* Signals other modules that a drawing is in progress and the stateblock finalized */
 839     This->isInDraw = TRUE;
 840
 841     ActivateContext(This, This->render_targets[0], CTXUSAGE_DRAWPRIM);
 842
 843     if (This->stencilBufferTarget) {
 844         /* Note that this depends on the ActivateContext call above to set
 845          * This->render_offscreen properly */
 846         DWORD location = This->render_offscreen ? SFLAG_DS_OFFSCREEN : SFLAG_DS_ONSCREEN;
 847         surface_load_ds_location(This->stencilBufferTarget, location);
 848         surface_modify_ds_location(This->stencilBufferTarget, location);
 849     }
 850
 851     /* Ok, we will be updating the screen from here onwards so grab the lock */
 852     ENTER_GL();
 853     {
 854         GLenum glPrimType;
 855         BOOL emulation = FALSE;
 856         const WineDirect3DVertexStridedData *strided = &This->strided_streams;
 857         WineDirect3DVertexStridedData stridedlcl;
 858         /* Ok, Work out which primitive is requested and how many vertexes that
 859            will be                                                              */
 860         UINT calculatedNumberOfindices = primitiveToGl(PrimitiveType, NumPrimitives, &glPrimType);
 861         if (numberOfVertices == 0 )
 862             numberOfVertices = calculatedNumberOfindices;
 863
 864         if(!use_vs(This)) {
 865             if(!This->strided_streams.u.s.position_transformed && This->activeContext->num_untracked_materials &&
 866                 This->stateBlock->renderState[WINED3DRS_LIGHTING]) {
 867                 static BOOL warned;
 868                 if (!warned) {
 869                     FIXME("Using software emulation because not all material properties could be tracked\n");
 870                     warned = TRUE;
 871                 } else {
 872                     TRACE("Using software emulation because not all material properties could be tracked\n");
 873                 }
 874                 emulation = TRUE;
 875             }
 876             else if(This->activeContext->fog_coord && This->stateBlock->renderState[WINED3DRS_FOGENABLE]) {
 877                 /* Either write a pipeline replacement shader or convert the specular alpha from unsigned byte
 878                  * to a float in the vertex buffer
 879                  */
 880                 static BOOL warned;
 881                 if (!warned) {
 882                     FIXME("Using software emulation because manual fog coordinates are provided\n");
 883                     warned = TRUE;
 884                 } else {
 885                     TRACE("Using software emulation because manual fog coordinates are provided\n");
 886                 }
 887                 emulation = TRUE;
 888             }
 889
 890             if(emulation) {
 891                 strided = &stridedlcl;
 892                 memcpy(&stridedlcl, &This->strided_streams, sizeof(stridedlcl));
 893                 remove_vbos(This, &stridedlcl);
 894             }
 895         }
 896
 897         if (This->useDrawStridedSlow || emulation) {
 898             /* Immediate mode drawing */
 899             if(use_vs(This)) {
 900                 static BOOL warned;
 901                 if (!warned) {
 902                     FIXME("Using immediate mode with vertex shaders for half float emulation\n");
 903                     warned = TRUE;
 904                 } else {
 905                     TRACE("Using immediate mode with vertex shaders for half float emulation\n");
 906                 }
 907                 drawStridedSlowVs(iface, strided, calculatedNumberOfindices, glPrimType,
 908                                   idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
 909             } else {
 910                 drawStridedSlow(iface, strided, calculatedNumberOfindices,
 911                                 glPrimType, idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
 912             }
 913         } else if(This->instancedDraw) {
 914             /* Instancing emulation with mixing immediate mode and arrays */
 915             drawStridedInstanced(iface, &This->strided_streams, calculatedNumberOfindices, glPrimType,
 916                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
 917         } else {
 918             drawStridedFast(iface, calculatedNumberOfindices, glPrimType,
 919                             idxData, idxSize, minIndex, StartIdx, StartVertexIndex);
 920         }
 921     }
 922
 923     /* Finished updating the screen, restore lock */
 924     LEAVE_GL();
 925     TRACE("Done all gl drawing\n");
 926
 927     /* Diagnostics */
 928 #ifdef SHOW_FRAME_MAKEUP
 929     {
 930         static long int primCounter = 0;
 931         /* NOTE: set primCounter to the value reported by drawprim
 932            before you want to to write frame makeup to /tmp */
 933         if (primCounter >= 0) {
 934             WINED3DLOCKED_RECT r;
 935             char buffer[80];
 936             IWineD3DSurface_LockRect(This->render_targets[0], &r, NULL, WINED3DLOCK_READONLY);
 937             sprintf(buffer, "/tmp/backbuffer_%ld.tga", primCounter);
 938             TRACE("Saving screenshot %s\n", buffer);
 939             IWineD3DSurface_SaveSnapshot(This->render_targets[0], buffer);
 940             IWineD3DSurface_UnlockRect(This->render_targets[0]);
 941
 942 #ifdef SHOW_TEXTURE_MAKEUP
 943            {
 944             IWineD3DSurface *pSur;
 945             int textureNo;
 946             for (textureNo = 0; textureNo < MAX_COMBINED_SAMPLERS; ++textureNo) {
 947                 if (This->stateBlock->textures[textureNo] != NULL) {
 948                     sprintf(buffer, "/tmp/texture_%p_%ld_%d.tga", This->stateBlock->textures[textureNo], primCounter, textureNo);
 949                     TRACE("Saving texture %s\n", buffer);
 950                     if (IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]) == WINED3DRTYPE_TEXTURE) {
 951                             IWineD3DTexture_GetSurfaceLevel((IWineD3DTexture *)This->stateBlock->textures[textureNo], 0, &pSur);
 952                             IWineD3DSurface_SaveSnapshot(pSur, buffer);
 953                             IWineD3DSurface_Release(pSur);
 954                     } else  {
 955                         FIXME("base Texture isn't of type texture %d\n", IWineD3DBaseTexture_GetType(This->stateBlock->textures[textureNo]));
 956                     }
 957                 }
 958             }
 959            }
 960 #endif
 961         }
 962         TRACE("drawprim #%ld\n", primCounter);
 963         ++primCounter;
 964     }
 965 #endif
 966
 967     /* Control goes back to the device, stateblock values may change again */
 968     This->isInDraw = FALSE;
 969 }
 970
 971 static void normalize_normal(float *n) {
 972     float length = n[0] * n[0] + n[1] * n[1] + n[2] * n[2];
 973     if(length == 0.0) return;
 974     length = sqrt(length);
 975     n[0] = n[0] / length;
 976     n[1] = n[1] / length;
 977     n[2] = n[2] / length;
 978 }
 979
 980 /* Tesselates a high order rectangular patch into single triangles using gl evaluators
 981  *
 982  * The problem is that OpenGL does not offer a direct way to return the tesselated primitives,
 983  * and they can't be sent off for rendering directly either. Tesselating is slow, so we want
 984  * to cache the patches in a vertex buffer. But more importantly, gl can't bind generated
 985  * attributes to numbered shader attributes, so we have to store them and rebind them as needed
 986  * in drawprim.
 987  *
 988  * To read back, the opengl feedback mode is used. This creates a problem because we want
 989  * untransformed, unlit vertices, but feedback runs everything through transform and lighting.
 990  * Thus disable lighting and set identity matrices to get unmodified colors and positions.
 991  * To overcome clipping find the biggest x, y and z values of the vertices in the patch and scale
 992  * them to [-1.0;+1.0] and set the viewport up to scale them back.
 993  *
 994  * Normals are more tricky: Draw white vertices with 3 directional lights, and calculate the
 995  * resulting colors back to the normals.
 996  *
 997  * NOTE: This function activates a context for blitting, modifies matrices & viewport, but
 998  * does not restore it because normally a draw follows immediately afterwards. The caller is
 999  * responsible of taking care that either the gl states are restored, or the context activated
1000  * for drawing to reset the lastWasBlit flag.
1001  */
1002 HRESULT tesselate_rectpatch(IWineD3DDeviceImpl *This,
1003                             struct WineD3DRectPatch *patch) {
1004     unsigned int i, j, num_quads, out_vertex_size, buffer_size, d3d_out_vertex_size;
1005     float max_x = 0.0, max_y = 0.0, max_z = 0.0, neg_z = 0.0;
1006     WineDirect3DVertexStridedData strided;
1007     const BYTE *data;
1008     const WINED3DRECTPATCH_INFO *info = &patch->RectPatchInfo;
1009     DWORD vtxStride;
1010     GLenum feedback_type;
1011     GLfloat *feedbuffer;
1012
1013     /* First, locate the position data. This is provided in a vertex buffer in the stateblock.
1014      * Beware of vbos
1015      */
1016     memset(&strided, 0, sizeof(strided));
1017     primitiveDeclarationConvertToStridedData((IWineD3DDevice *) This, FALSE, &strided, NULL);
1018     if(strided.u.s.position.VBO) {
1019         IWineD3DVertexBufferImpl *vb;
1020         vb = (IWineD3DVertexBufferImpl *) This->stateBlock->streamSource[strided.u.s.position.streamNo];
1021         strided.u.s.position.lpData = (BYTE *) ((unsigned long) strided.u.s.position.lpData +
1022                                                 (unsigned long) vb->resource.allocatedMemory);
1023     }
1024     vtxStride = strided.u.s.position.dwStride;
1025     data = strided.u.s.position.lpData +
1026            vtxStride * info->Stride * info->StartVertexOffsetHeight +
1027            vtxStride * info->StartVertexOffsetWidth;
1028
1029     /* Not entirely sure about what happens with transformed vertices */
1030     if(strided.u.s.position_transformed) {
1031         FIXME("Transformed position in rectpatch generation\n");
1032     }
1033     if(vtxStride % sizeof(GLfloat)) {
1034         /* glMap2f reads vertex sizes in GLfloats, the d3d stride is in bytes.
1035          * I don't see how the stride could not be a multiple of 4, but make sure
1036          * to check it
1037          */
1038         ERR("Vertex stride is not a multiple of sizeof(GLfloat)\n");
1039     }
1040     if(info->Basis != WINED3DBASIS_BEZIER) {
1041         FIXME("Basis is %s, how to handle this?\n", debug_d3dbasis(info->Basis));
1042     }
1043     if(info->Degree != WINED3DDEGREE_CUBIC) {
1044         FIXME("Degree is %s, how to handle this?\n", debug_d3ddegree(info->Degree));
1045     }
1046
1047     /* First, get the boundary cube of the input data */
1048     for(j = 0; j < info->Height; j++) {
1049         for(i = 0; i < info->Width; i++) {
1050             const float *v = (const float *)(data + vtxStride * i + vtxStride * info->Stride * j);
1051             if(fabs(v[0]) > max_x) max_x = fabs(v[0]);
1052             if(fabs(v[1]) > max_y) max_y = fabs(v[1]);
1053             if(fabs(v[2]) > max_z) max_z = fabs(v[2]);
1054             if(v[2] < neg_z) neg_z = v[2];
1055         }
1056     }
1057
1058     /* This needs some improvements in the vertex decl code */
1059     FIXME("Cannot find data to generate. Only generating position and normals\n");
1060     patch->has_normals = TRUE;
1061     patch->has_texcoords = FALSE;
1062
1063     /* Simply activate the context for blitting. This disables all the things we don't want and
1064      * takes care of dirtifying. Dirtifying is preferred over pushing / popping, since drawing the
1065      * patch (as opposed to normal draws) will most likely need different changes anyway
1066      */
1067     ActivateContext(This, This->lastActiveRenderTarget, CTXUSAGE_BLIT);
1068     ENTER_GL();
1069
1070     glMatrixMode(GL_PROJECTION);
1071     checkGLcall("glMatrixMode(GL_PROJECTION)");
1072     glLoadIdentity();
1073     checkGLcall("glLoadIndentity()");
1074     glScalef(1 / (max_x) , 1 / (max_y), max_z == 0 ? 1 : 1 / ( 2 * max_z));
1075     glTranslatef(0, 0, 0.5);
1076     checkGLcall("glScalef");
1077     glViewport(-max_x, -max_y, 2 * (max_x), 2 * (max_y));
1078     checkGLcall("glViewport");
1079
1080     /* Some states to take care of. If we're in wireframe opengl will produce lines, and confuse
1081      * our feedback buffer parser
1082      */
1083     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1084     checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
1085     IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_FILLMODE));
1086     if(patch->has_normals) {
1087         const GLfloat black[4] = {0, 0, 0, 0};
1088         const GLfloat red[4]   = {1, 0, 0, 0};
1089         const GLfloat green[4] = {0, 1, 0, 0};
1090         const GLfloat blue[4]  = {0, 0, 1, 0};
1091         const GLfloat white[4] = {1, 1, 1, 1};
1092         glEnable(GL_LIGHTING);
1093         checkGLcall("glEnable(GL_LIGHTING)");
1094         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
1095         checkGLcall("glLightModel for MODEL_AMBIENT");
1096         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_AMBIENT));
1097
1098         for(i = 3; i < GL_LIMITS(lights); i++) {
1099             glDisable(GL_LIGHT0 + i);
1100             checkGLcall("glDisable(GL_LIGHT0 + i)");
1101             IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(i));
1102         }
1103
1104         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(0));
1105         glLightfv(GL_LIGHT0, GL_DIFFUSE, red);
1106         glLightfv(GL_LIGHT0, GL_SPECULAR, black);
1107         glLightfv(GL_LIGHT0, GL_AMBIENT, black);
1108         glLightfv(GL_LIGHT0, GL_POSITION, red);
1109         glEnable(GL_LIGHT0);
1110         checkGLcall("Setting up light 1\n");
1111         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(1));
1112         glLightfv(GL_LIGHT1, GL_DIFFUSE, green);
1113         glLightfv(GL_LIGHT1, GL_SPECULAR, black);
1114         glLightfv(GL_LIGHT1, GL_AMBIENT, black);
1115         glLightfv(GL_LIGHT1, GL_POSITION, green);
1116         glEnable(GL_LIGHT1);
1117         checkGLcall("Setting up light 2\n");
1118         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(2));
1119         glLightfv(GL_LIGHT2, GL_DIFFUSE, blue);
1120         glLightfv(GL_LIGHT2, GL_SPECULAR, black);
1121         glLightfv(GL_LIGHT2, GL_AMBIENT, black);
1122         glLightfv(GL_LIGHT2, GL_POSITION, blue);
1123         glEnable(GL_LIGHT2);
1124         checkGLcall("Setting up light 3\n");
1125
1126         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_MATERIAL);
1127         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_COLORVERTEX));
1128         glDisable(GL_COLOR_MATERIAL);
1129         glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, black);
1130         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
1131         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
1132         checkGLcall("Setting up materials\n");
1133     }
1134
1135     /* Enable the needed maps.
1136      * GL_MAP2_VERTEX_3 is needed for positional data.
1137      * GL_AUTO_NORMAL to generate normals from the position. Do not use GL_MAP2_NORMAL.
1138      * GL_MAP2_TEXTURE_COORD_4 for texture coords
1139      */
1140     num_quads = ceilf(patch->numSegs[0]) * ceilf(patch->numSegs[1]);
1141     out_vertex_size = 3 /* position */;
1142     d3d_out_vertex_size = 3;
1143     glEnable(GL_MAP2_VERTEX_3);
1144     if(patch->has_normals && patch->has_texcoords) {
1145         FIXME("Texcoords not handled yet\n");
1146         feedback_type = GL_3D_COLOR_TEXTURE;
1147         out_vertex_size += 8;
1148         d3d_out_vertex_size += 7;
1149         glEnable(GL_AUTO_NORMAL);
1150         glEnable(GL_MAP2_TEXTURE_COORD_4);
1151     } else if(patch->has_texcoords) {
1152         FIXME("Texcoords not handled yet\n");
1153         feedback_type = GL_3D_COLOR_TEXTURE;
1154         out_vertex_size += 7;
1155         d3d_out_vertex_size += 4;
1156         glEnable(GL_MAP2_TEXTURE_COORD_4);
1157     } else if(patch->has_normals) {
1158         feedback_type = GL_3D_COLOR;
1159         out_vertex_size += 4;
1160         d3d_out_vertex_size += 3;
1161         glEnable(GL_AUTO_NORMAL);
1162     } else {
1163         feedback_type = GL_3D;
1164     }
1165     checkGLcall("glEnable vertex attrib generation");
1166
1167     buffer_size = num_quads * out_vertex_size * 2 /* triangle list */ * 3 /* verts per tri */
1168                    + 4 * num_quads /* 2 triangle markers per quad + num verts in tri */;
1169     feedbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, buffer_size * sizeof(float) * 8);
1170
1171     glMap2f(GL_MAP2_VERTEX_3,
1172             0, 1, vtxStride / sizeof(float), info->Width,
1173             0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1174             (const GLfloat *)data);
1175     checkGLcall("glMap2f");
1176     if(patch->has_texcoords) {
1177         glMap2f(GL_MAP2_TEXTURE_COORD_4,
1178                 0, 1, vtxStride / sizeof(float), info->Width,
1179                 0, 1, info->Stride * vtxStride / sizeof(float), info->Height,
1180                 (const GLfloat *)data);
1181         checkGLcall("glMap2f");
1182     }
1183     glMapGrid2f(ceilf(patch->numSegs[0]), 0.0, 1.0, ceilf(patch->numSegs[1]), 0.0, 1.0);
1184     checkGLcall("glMapGrid2f");
1185
1186     glFeedbackBuffer(buffer_size * 2, feedback_type, feedbuffer);
1187     checkGLcall("glFeedbackBuffer");
1188     glRenderMode(GL_FEEDBACK);
1189
1190     glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1191     checkGLcall("glEvalMesh2\n");
1192
1193     i = glRenderMode(GL_RENDER);
1194     if(i == -1) {
1195         LEAVE_GL();
1196         ERR("Feedback failed. Expected %d elements back\n", buffer_size);
1197         Sleep(10000);
1198         HeapFree(GetProcessHeap(), 0, feedbuffer);
1199         return WINED3DERR_DRIVERINTERNALERROR;
1200     } else if(i != buffer_size) {
1201         LEAVE_GL();
1202         ERR("Unexpected amount of elements returned. Expected %d, got %d\n", buffer_size, i);
1203         Sleep(10000);
1204         HeapFree(GetProcessHeap(), 0, feedbuffer);
1205         return WINED3DERR_DRIVERINTERNALERROR;
1206     } else {
1207         TRACE("Got %d elements as expected\n", i);
1208     }
1209
1210     HeapFree(GetProcessHeap(), 0, patch->mem);
1211     patch->mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_quads * 6 * d3d_out_vertex_size * sizeof(float) * 8);
1212     i = 0;
1213     for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1214         if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1215             ERR("Unexpected token: %f\n", feedbuffer[j]);
1216             continue;
1217         }
1218         if(feedbuffer[j + 1] != 3) {
1219             ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1220             continue;
1221         }
1222         /* Somehow there are different ideas about back / front facing, so fix up the
1223          * vertex order
1224          */
1225         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 2 + 2]; /* x, triangle 2 */
1226         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 2 + 3]; /* y, triangle 2 */
1227         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 2 + 4] - 0.5) * 4 * max_z; /* z, triangle 3 */
1228         if(patch->has_normals) {
1229             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 2 + 5];
1230             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 2 + 6];
1231             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 2 + 7];
1232         }
1233         i += d3d_out_vertex_size;
1234
1235         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 1 + 2]; /* x, triangle 2 */
1236         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 1 + 3]; /* y, triangle 2 */
1237         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 1 + 4] - 0.5) * 4 * max_z; /* z, triangle 2 */
1238         if(patch->has_normals) {
1239             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 1 + 5];
1240             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 1 + 6];
1241             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 1 + 7];
1242         }
1243         i += d3d_out_vertex_size;
1244
1245         patch->mem[i + 0] =  feedbuffer[j + out_vertex_size * 0 + 2]; /* x, triangle 1 */
1246         patch->mem[i + 1] =  feedbuffer[j + out_vertex_size * 0 + 3]; /* y, triangle 1 */
1247         patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 0 + 4] - 0.5) * 4 * max_z; /* z, triangle 1 */
1248         if(patch->has_normals) {
1249             patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 0 + 5];
1250             patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 0 + 6];
1251             patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 0 + 7];
1252         }
1253         i += d3d_out_vertex_size;
1254     }
1255
1256     if(patch->has_normals) {
1257         /* Now do the same with reverse light directions */
1258         const GLfloat x[4] = {-1,  0,  0, 0};
1259         const GLfloat y[4] = { 0, -1,  0, 0};
1260         const GLfloat z[4] = { 0,  0, -1, 0};
1261         glLightfv(GL_LIGHT0, GL_POSITION, x);
1262         glLightfv(GL_LIGHT1, GL_POSITION, y);
1263         glLightfv(GL_LIGHT2, GL_POSITION, z);
1264         checkGLcall("Setting up reverse light directions\n");
1265
1266         glRenderMode(GL_FEEDBACK);
1267         checkGLcall("glRenderMode(GL_FEEDBACK)");
1268         glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
1269         checkGLcall("glEvalMesh2\n");
1270         i = glRenderMode(GL_RENDER);
1271         checkGLcall("glRenderMode(GL_RENDER)");
1272
1273         i = 0;
1274         for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
1275             if(feedbuffer[j] != GL_POLYGON_TOKEN) {
1276                 ERR("Unexpected token: %f\n", feedbuffer[j]);
1277                 continue;
1278             }
1279             if(feedbuffer[j + 1] != 3) {
1280                 ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
1281                 continue;
1282             }
1283             if(patch->mem[i + 3] == 0.0)
1284                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 2 + 5];
1285             if(patch->mem[i + 4] == 0.0)
1286                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 2 + 6];
1287             if(patch->mem[i + 5] == 0.0)
1288                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 2 + 7];
1289             normalize_normal(patch->mem + i + 3);
1290             i += d3d_out_vertex_size;
1291
1292             if(patch->mem[i + 3] == 0.0)
1293                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 1 + 5];
1294             if(patch->mem[i + 4] == 0.0)
1295                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 1 + 6];
1296             if(patch->mem[i + 5] == 0.0)
1297                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 1 + 7];
1298             normalize_normal(patch->mem + i + 3);
1299             i += d3d_out_vertex_size;
1300
1301             if(patch->mem[i + 3] == 0.0)
1302                 patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 0 + 5];
1303             if(patch->mem[i + 4] == 0.0)
1304                 patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 0 + 6];
1305             if(patch->mem[i + 5] == 0.0)
1306                 patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 0 + 7];
1307             normalize_normal(patch->mem + i + 3);
1308             i += d3d_out_vertex_size;
1309         }
1310     }
1311
1312     glDisable(GL_MAP2_VERTEX_3);
1313     glDisable(GL_AUTO_NORMAL);
1314     glDisable(GL_MAP2_NORMAL);
1315     glDisable(GL_MAP2_TEXTURE_COORD_4);
1316     checkGLcall("glDisable vertex attrib generation");
1317     LEAVE_GL();
1318
1319     HeapFree(GetProcessHeap(), 0, feedbuffer);
1320
1321     vtxStride = 3 * sizeof(float);
1322     if(patch->has_normals) {
1323         vtxStride += 3 * sizeof(float);
1324     }
1325     if(patch->has_texcoords) {
1326         vtxStride += 4 * sizeof(float);
1327     }
1328     memset(&patch->strided, 0, sizeof(&patch->strided));
1329     patch->strided.u.s.position.lpData = (BYTE *) patch->mem;
1330     patch->strided.u.s.position.dwStride = vtxStride;
1331     patch->strided.u.s.position.dwType = WINED3DDECLTYPE_FLOAT3;
1332     patch->strided.u.s.position.streamNo = 255;
1333
1334     if(patch->has_normals) {
1335         patch->strided.u.s.normal.lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1336         patch->strided.u.s.normal.dwStride = vtxStride;
1337         patch->strided.u.s.normal.dwType = WINED3DDECLTYPE_FLOAT3;
1338         patch->strided.u.s.normal.streamNo = 255;
1339     }
1340     if(patch->has_texcoords) {
1341         patch->strided.u.s.texCoords[0].lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
1342         if(patch->has_normals) {
1343             patch->strided.u.s.texCoords[0].lpData += 3 * sizeof(float);
1344         }
1345         patch->strided.u.s.texCoords[0].dwStride = vtxStride;
1346         patch->strided.u.s.texCoords[0].dwType = WINED3DDECLTYPE_FLOAT4;
1347         /* MAX_STREAMS index points to an unused element in stateblock->streamOffsets which
1348          * always remains set to 0. Windows uses stream 255 here, but this is not visible to the
1349          * application.
1350          */
1351         patch->strided.u.s.texCoords[0].streamNo = MAX_STREAMS;
1352     }
1353
1354     return WINED3D_OK;
1355 }