git.oblomov.eu Git - wine/blob - dlls/d3d8/vertexdeclaration.c

   1 /*
   2  * IDirect3DVertexDeclaration8 implementation
   3  *
   4  * Copyright 2007 Henri Verbeet
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 /* IDirect3DVertexDeclaration8 is internal to our implementation.
  22  * It's not visible in the API. */
  23
  24 #include "config.h"
  25 #include "d3d8_private.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(d3d8);
  28
  29 /* IUnknown */
  30 static HRESULT WINAPI IDirect3DVertexDeclaration8Impl_QueryInterface(IDirect3DVertexDeclaration8 *iface, REFIID riid, void **obj_ptr)
  31 {
  32     TRACE("iface %p, riid %s, object %p.\n", iface, debugstr_guid(riid), obj_ptr);
  33
  34     if (IsEqualGUID(riid, &IID_IUnknown)
  35             || IsEqualGUID(riid, &IID_IDirect3DVertexDeclaration8))
  36     {
  37         IUnknown_AddRef(iface);
  38         *obj_ptr = iface;
  39         return S_OK;
  40     }
  41
  42     *obj_ptr = NULL;
  43     return E_NOINTERFACE;
  44 }
  45
  46 static ULONG WINAPI IDirect3DVertexDeclaration8Impl_AddRef(IDirect3DVertexDeclaration8 *iface)
  47 {
  48     IDirect3DVertexDeclaration8Impl *This = (IDirect3DVertexDeclaration8Impl *)iface;
  49     ULONG ref_count = InterlockedIncrement(&This->ref_count);
  50
  51     TRACE("%p increasing refcount to %u.\n", iface, ref_count);
  52
  53     if (ref_count == 1)
  54     {
  55         wined3d_mutex_lock();
  56         IWineD3DVertexDeclaration_AddRef(This->wined3d_vertex_declaration);
  57         wined3d_mutex_unlock();
  58     }
  59
  60     return ref_count;
  61 }
  62
  63 static ULONG WINAPI IDirect3DVertexDeclaration8Impl_Release(IDirect3DVertexDeclaration8 *iface)
  64 {
  65     IDirect3DVertexDeclaration8Impl *This = (IDirect3DVertexDeclaration8Impl *)iface;
  66     ULONG ref_count = InterlockedDecrement(&This->ref_count);
  67
  68     TRACE("%p decreasing refcount to %u.\n", iface, ref_count);
  69
  70     if (!ref_count) {
  71         wined3d_mutex_lock();
  72         IWineD3DVertexDeclaration_Release(This->wined3d_vertex_declaration);
  73         wined3d_mutex_unlock();
  74     }
  75
  76     return ref_count;
  77 }
  78
  79 static const char *debug_d3dvsdt_type(D3DVSDT_TYPE d3dvsdt_type)
  80 {
  81     switch (d3dvsdt_type)
  82     {
  83 #define D3DVSDT_TYPE_TO_STR(u) case u: return #u
  84         D3DVSDT_TYPE_TO_STR(D3DVSDT_FLOAT1);
  85         D3DVSDT_TYPE_TO_STR(D3DVSDT_FLOAT2);
  86         D3DVSDT_TYPE_TO_STR(D3DVSDT_FLOAT3);
  87         D3DVSDT_TYPE_TO_STR(D3DVSDT_FLOAT4);
  88         D3DVSDT_TYPE_TO_STR(D3DVSDT_D3DCOLOR);
  89         D3DVSDT_TYPE_TO_STR(D3DVSDT_UBYTE4);
  90         D3DVSDT_TYPE_TO_STR(D3DVSDT_SHORT2);
  91         D3DVSDT_TYPE_TO_STR(D3DVSDT_SHORT4);
  92 #undef D3DVSDT_TYPE_TO_STR
  93         default:
  94             FIXME("Unrecognized D3DVSDT_TYPE %#x\n", d3dvsdt_type);
  95             return "unrecognized";
  96     }
  97 }
  98
  99 static const char *debug_d3dvsde_register(D3DVSDE_REGISTER d3dvsde_register)
 100 {
 101     switch (d3dvsde_register)
 102     {
 103 #define D3DVSDE_REGISTER_TO_STR(u) case u: return #u
 104         D3DVSDE_REGISTER_TO_STR(D3DVSDE_POSITION);
 105         D3DVSDE_REGISTER_TO_STR(D3DVSDE_BLENDWEIGHT);
 106         D3DVSDE_REGISTER_TO_STR(D3DVSDE_BLENDINDICES);
 107         D3DVSDE_REGISTER_TO_STR(D3DVSDE_NORMAL);
 108         D3DVSDE_REGISTER_TO_STR(D3DVSDE_PSIZE);
 109         D3DVSDE_REGISTER_TO_STR(D3DVSDE_DIFFUSE);
 110         D3DVSDE_REGISTER_TO_STR(D3DVSDE_SPECULAR);
 111         D3DVSDE_REGISTER_TO_STR(D3DVSDE_TEXCOORD0);
 112         D3DVSDE_REGISTER_TO_STR(D3DVSDE_TEXCOORD1);
 113         D3DVSDE_REGISTER_TO_STR(D3DVSDE_TEXCOORD2);
 114         D3DVSDE_REGISTER_TO_STR(D3DVSDE_TEXCOORD3);
 115         D3DVSDE_REGISTER_TO_STR(D3DVSDE_TEXCOORD4);
 116         D3DVSDE_REGISTER_TO_STR(D3DVSDE_TEXCOORD5);
 117         D3DVSDE_REGISTER_TO_STR(D3DVSDE_TEXCOORD6);
 118         D3DVSDE_REGISTER_TO_STR(D3DVSDE_TEXCOORD7);
 119         D3DVSDE_REGISTER_TO_STR(D3DVSDE_POSITION2);
 120         D3DVSDE_REGISTER_TO_STR(D3DVSDE_NORMAL2);
 121 #undef D3DVSDE_REGISTER_TO_STR
 122         default:
 123             FIXME("Unrecognized D3DVSDE_REGISTER %#x\n", d3dvsde_register);
 124             return "unrecognized";
 125     }
 126 }
 127
 128 size_t parse_token(const DWORD* pToken)
 129 {
 130     const DWORD token = *pToken;
 131     size_t tokenlen = 1;
 132
 133     switch ((token & D3DVSD_TOKENTYPEMASK) >> D3DVSD_TOKENTYPESHIFT) { /* maybe a macro to inverse ... */
 134         case D3DVSD_TOKEN_NOP:
 135             TRACE(" 0x%08x NOP()\n", token);
 136             break;
 137
 138         case D3DVSD_TOKEN_STREAM:
 139             if (token & D3DVSD_STREAMTESSMASK)
 140             {
 141                 TRACE(" 0x%08x STREAM_TESS()\n", token);
 142             } else {
 143                 TRACE(" 0x%08x STREAM(%u)\n", token, ((token & D3DVSD_STREAMNUMBERMASK) >> D3DVSD_STREAMNUMBERSHIFT));
 144             }
 145             break;
 146
 147         case D3DVSD_TOKEN_STREAMDATA:
 148             if (token & 0x10000000)
 149             {
 150                 TRACE(" 0x%08x SKIP(%u)\n", token, ((token & D3DVSD_SKIPCOUNTMASK) >> D3DVSD_SKIPCOUNTSHIFT));
 151             } else {
 152                 DWORD type = ((token & D3DVSD_DATATYPEMASK)  >> D3DVSD_DATATYPESHIFT);
 153                 DWORD reg = ((token & D3DVSD_VERTEXREGMASK) >> D3DVSD_VERTEXREGSHIFT);
 154                 TRACE(" 0x%08x REG(%s, %s)\n", token, debug_d3dvsde_register(reg), debug_d3dvsdt_type(type));
 155             }
 156             break;
 157
 158         case D3DVSD_TOKEN_TESSELLATOR:
 159             if (token & 0x10000000)
 160             {
 161                 DWORD type = ((token & D3DVSD_DATATYPEMASK)  >> D3DVSD_DATATYPESHIFT);
 162                 DWORD reg = ((token & D3DVSD_VERTEXREGMASK) >> D3DVSD_VERTEXREGSHIFT);
 163                 TRACE(" 0x%08x TESSUV(%s) as %s\n", token, debug_d3dvsde_register(reg), debug_d3dvsdt_type(type));
 164             } else {
 165                 DWORD type = ((token & D3DVSD_DATATYPEMASK)    >> D3DVSD_DATATYPESHIFT);
 166                 DWORD regout = ((token & D3DVSD_VERTEXREGMASK)   >> D3DVSD_VERTEXREGSHIFT);
 167                 DWORD regin = ((token & D3DVSD_VERTEXREGINMASK) >> D3DVSD_VERTEXREGINSHIFT);
 168                 TRACE(" 0x%08x TESSNORMAL(%s, %s) as %s\n", token, debug_d3dvsde_register(regin),
 169                         debug_d3dvsde_register(regout), debug_d3dvsdt_type(type));
 170             }
 171             break;
 172
 173         case D3DVSD_TOKEN_CONSTMEM:
 174             {
 175                 DWORD count = ((token & D3DVSD_CONSTCOUNTMASK)   >> D3DVSD_CONSTCOUNTSHIFT);
 176                 tokenlen = (4 * count) + 1;
 177             }
 178             break;
 179
 180         case D3DVSD_TOKEN_EXT:
 181             {
 182                 DWORD count = ((token & D3DVSD_CONSTCOUNTMASK) >> D3DVSD_CONSTCOUNTSHIFT);
 183                 DWORD extinfo = ((token & D3DVSD_EXTINFOMASK)    >> D3DVSD_EXTINFOSHIFT);
 184                 TRACE(" 0x%08x EXT(%u, %u)\n", token, count, extinfo);
 185                 /* todo ... print extension */
 186                 tokenlen = count + 1;
 187             }
 188             break;
 189
 190         case D3DVSD_TOKEN_END:
 191             TRACE(" 0x%08x END()\n", token);
 192             break;
 193
 194         default:
 195             TRACE(" 0x%08x UNKNOWN\n", token);
 196             /* argg error */
 197     }
 198
 199     return tokenlen;
 200 }
 201
 202 void load_local_constants(const DWORD *d3d8_elements, IWineD3DVertexShader *wined3d_vertex_shader)
 203 {
 204     const DWORD *token = d3d8_elements;
 205
 206     while (*token != D3DVSD_END())
 207     {
 208         if (((*token & D3DVSD_TOKENTYPEMASK) >> D3DVSD_TOKENTYPESHIFT) == D3DVSD_TOKEN_CONSTMEM)
 209         {
 210             DWORD count = ((*token & D3DVSD_CONSTCOUNTMASK) >> D3DVSD_CONSTCOUNTSHIFT);
 211             DWORD constant_idx = ((*token & D3DVSD_CONSTADDRESSMASK) >> D3DVSD_CONSTADDRESSSHIFT);
 212             HRESULT hr;
 213
 214             if (TRACE_ON(d3d8))
 215             {
 216                 DWORD i;
 217                 for (i = 0; i < count; ++i)
 218                 {
 219                     TRACE("c[%u] = (%8f, %8f, %8f, %8f)\n",
 220                             constant_idx,
 221                             *(const float *)(token + i * 4 + 1),
 222                             *(const float *)(token + i * 4 + 2),
 223                             *(const float *)(token + i * 4 + 3),
 224                             *(const float *)(token + i * 4 + 4));
 225                 }
 226             }
 227             hr = IWineD3DVertexShader_SetLocalConstantsF(wined3d_vertex_shader, constant_idx, (const float *)token+1, count);
 228             if (FAILED(hr)) ERR("Failed setting shader constants\n");
 229         }
 230
 231         token += parse_token(token);
 232     }
 233 }
 234
 235 /* NOTE: Make sure these are in the correct numerical order. (see /include/wined3d_types.h) */
 236 static const size_t wined3d_type_sizes[] =
 237 {
 238     /*WINED3DDECLTYPE_FLOAT1*/    1 * sizeof(float),
 239     /*WINED3DDECLTYPE_FLOAT2*/    2 * sizeof(float),
 240     /*WINED3DDECLTYPE_FLOAT3*/    3 * sizeof(float),
 241     /*WINED3DDECLTYPE_FLOAT4*/    4 * sizeof(float),
 242     /*WINED3DDECLTYPE_D3DCOLOR*/  4 * sizeof(BYTE),
 243     /*WINED3DDECLTYPE_UBYTE4*/    4 * sizeof(BYTE),
 244     /*WINED3DDECLTYPE_SHORT2*/    2 * sizeof(short int),
 245     /*WINED3DDECLTYPE_SHORT4*/    4 * sizeof(short int),
 246     /*WINED3DDECLTYPE_UBYTE4N*/   4 * sizeof(BYTE),
 247     /*WINED3DDECLTYPE_SHORT2N*/   2 * sizeof(short int),
 248     /*WINED3DDECLTYPE_SHORT4N*/   4 * sizeof(short int),
 249     /*WINED3DDECLTYPE_USHORT2N*/  2 * sizeof(short int),
 250     /*WINED3DDECLTYPE_USHORT4N*/  4 * sizeof(short int),
 251     /*WINED3DDECLTYPE_UDEC3*/     3 * sizeof(short int),
 252     /*WINED3DDECLTYPE_DEC3N*/     3 * sizeof(short int),
 253     /*WINED3DDECLTYPE_FLOAT16_2*/ 2 * sizeof(short int),
 254     /*WINED3DDECLTYPE_FLOAT16_4*/ 4 * sizeof(short int)
 255 };
 256
 257 static const WINED3DFORMAT wined3d_format_lookup[] =
 258 {
 259     /*WINED3DDECLTYPE_FLOAT1*/    WINED3DFMT_R32_FLOAT,
 260     /*WINED3DDECLTYPE_FLOAT2*/    WINED3DFMT_R32G32_FLOAT,
 261     /*WINED3DDECLTYPE_FLOAT3*/    WINED3DFMT_R32G32B32_FLOAT,
 262     /*WINED3DDECLTYPE_FLOAT4*/    WINED3DFMT_R32G32B32A32_FLOAT,
 263     /*WINED3DDECLTYPE_D3DCOLOR*/  WINED3DFMT_B8G8R8A8_UNORM,
 264     /*WINED3DDECLTYPE_UBYTE4*/    WINED3DFMT_R8G8B8A8_UINT,
 265     /*WINED3DDECLTYPE_SHORT2*/    WINED3DFMT_R16G16_SINT,
 266     /*WINED3DDECLTYPE_SHORT4*/    WINED3DFMT_R16G16B16A16_SINT,
 267     /*WINED3DDECLTYPE_UBYTE4N*/   WINED3DFMT_R8G8B8A8_UNORM,
 268     /*WINED3DDECLTYPE_SHORT2N*/   WINED3DFMT_R16G16_SNORM,
 269     /*WINED3DDECLTYPE_SHORT4N*/   WINED3DFMT_R16G16B16A16_SNORM,
 270     /*WINED3DDECLTYPE_USHORT2N*/  WINED3DFMT_R16G16_UNORM,
 271     /*WINED3DDECLTYPE_USHORT4N*/  WINED3DFMT_R16G16B16A16_UNORM,
 272     /*WINED3DDECLTYPE_UDEC3*/     WINED3DFMT_R10G10B10A2_UINT,
 273     /*WINED3DDECLTYPE_DEC3N*/     WINED3DFMT_R10G10B10A2_SNORM,
 274     /*WINED3DDECLTYPE_FLOAT16_2*/ WINED3DFMT_R16G16_FLOAT,
 275     /*WINED3DDECLTYPE_FLOAT16_4*/ WINED3DFMT_R16G16B16A16_FLOAT,
 276 };
 277
 278 typedef struct {
 279     BYTE usage;
 280     BYTE usage_idx;
 281 } wined3d_usage_t;
 282
 283 static const wined3d_usage_t wined3d_usage_lookup[] = {
 284     /*D3DVSDE_POSITION*/     {WINED3DDECLUSAGE_POSITION,     0},
 285     /*D3DVSDE_BLENDWEIGHT*/  {WINED3DDECLUSAGE_BLENDWEIGHT,  0},
 286     /*D3DVSDE_BLENDINDICES*/ {WINED3DDECLUSAGE_BLENDINDICES, 0},
 287     /*D3DVSDE_NORMAL*/       {WINED3DDECLUSAGE_NORMAL,       0},
 288     /*D3DVSDE_PSIZE*/        {WINED3DDECLUSAGE_PSIZE,        0},
 289     /*D3DVSDE_DIFFUSE*/      {WINED3DDECLUSAGE_COLOR,        0},
 290     /*D3DVSDE_SPECULAR*/     {WINED3DDECLUSAGE_COLOR,        1},
 291     /*D3DVSDE_TEXCOORD0*/    {WINED3DDECLUSAGE_TEXCOORD,     0},
 292     /*D3DVSDE_TEXCOORD1*/    {WINED3DDECLUSAGE_TEXCOORD,     1},
 293     /*D3DVSDE_TEXCOORD2*/    {WINED3DDECLUSAGE_TEXCOORD,     2},
 294     /*D3DVSDE_TEXCOORD3*/    {WINED3DDECLUSAGE_TEXCOORD,     3},
 295     /*D3DVSDE_TEXCOORD4*/    {WINED3DDECLUSAGE_TEXCOORD,     4},
 296     /*D3DVSDE_TEXCOORD5*/    {WINED3DDECLUSAGE_TEXCOORD,     5},
 297     /*D3DVSDE_TEXCOORD6*/    {WINED3DDECLUSAGE_TEXCOORD,     6},
 298     /*D3DVSDE_TEXCOORD7*/    {WINED3DDECLUSAGE_TEXCOORD,     7},
 299     /*D3DVSDE_POSITION2*/    {WINED3DDECLUSAGE_POSITION,     1},
 300     /*D3DVSDE_NORMAL2*/      {WINED3DDECLUSAGE_NORMAL,       1},
 301 };
 302
 303 /* TODO: find out where rhw (or positionT) is for declaration8 */
 304 static UINT convert_to_wined3d_declaration(const DWORD *d3d8_elements, DWORD *d3d8_elements_size,
 305         WINED3DVERTEXELEMENT **wined3d_elements)
 306 {
 307     const DWORD *token = d3d8_elements;
 308     WINED3DVERTEXELEMENT *element;
 309     D3DVSD_TOKENTYPE token_type;
 310     unsigned int element_count = 0;
 311     DWORD stream = 0;
 312     int offset = 0;
 313
 314     TRACE("d3d8_elements %p, wined3d_elements %p\n", d3d8_elements, wined3d_elements);
 315
 316     /* 128 should be enough for anyone... */
 317     *wined3d_elements = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 128 * sizeof(WINED3DVERTEXELEMENT));
 318     while (D3DVSD_END() != *token)
 319     {
 320         token_type = ((*token & D3DVSD_TOKENTYPEMASK) >> D3DVSD_TOKENTYPESHIFT);
 321
 322         if (token_type == D3DVSD_TOKEN_STREAM && !(*token & D3DVSD_STREAMTESSMASK))
 323         {
 324             stream = ((*token & D3DVSD_STREAMNUMBERMASK) >> D3DVSD_STREAMNUMBERSHIFT);
 325             offset = 0;
 326         } else if (token_type == D3DVSD_TOKEN_STREAMDATA && !(token_type & 0x10000000)) {
 327             DWORD type = ((*token & D3DVSD_DATATYPEMASK) >> D3DVSD_DATATYPESHIFT);
 328             DWORD reg  = ((*token & D3DVSD_VERTEXREGMASK) >> D3DVSD_VERTEXREGSHIFT);
 329
 330             TRACE("Adding element %d:\n", element_count);
 331
 332             element = *wined3d_elements + element_count++;
 333             element->format = wined3d_format_lookup[type];
 334             element->input_slot = stream;
 335             element->offset = offset;
 336             element->output_slot = reg;
 337             element->method = WINED3DDECLMETHOD_DEFAULT;
 338             element->usage = wined3d_usage_lookup[reg].usage;
 339             element->usage_idx = wined3d_usage_lookup[reg].usage_idx;
 340
 341             offset += wined3d_type_sizes[type];
 342         } else if (token_type == D3DVSD_TOKEN_STREAMDATA && (token_type & 0x10000000)) {
 343             TRACE(" 0x%08x SKIP(%u)\n", token_type, ((token_type & D3DVSD_SKIPCOUNTMASK) >> D3DVSD_SKIPCOUNTSHIFT));
 344             offset += sizeof(DWORD) * ((token_type & D3DVSD_SKIPCOUNTMASK) >> D3DVSD_SKIPCOUNTSHIFT);
 345         }
 346
 347         if (element_count >= 127) {
 348             ERR("More than 127 elements?\n");
 349             break;
 350         }
 351
 352         token += parse_token(token);
 353     }
 354
 355     *d3d8_elements_size = (++token - d3d8_elements) * sizeof(DWORD);
 356
 357     return element_count;
 358 }
 359
 360 static const IDirect3DVertexDeclaration8Vtbl Direct3DVertexDeclaration8_Vtbl =
 361 {
 362     IDirect3DVertexDeclaration8Impl_QueryInterface,
 363     IDirect3DVertexDeclaration8Impl_AddRef,
 364     IDirect3DVertexDeclaration8Impl_Release
 365 };
 366
 367 static void STDMETHODCALLTYPE d3d8_vertexdeclaration_wined3d_object_destroyed(void *parent)
 368 {
 369     IDirect3DVertexDeclaration8Impl *declaration = parent;
 370     HeapFree(GetProcessHeap(), 0, declaration->elements);
 371     HeapFree(GetProcessHeap(), 0, declaration);
 372 }
 373
 374 static const struct wined3d_parent_ops d3d8_vertexdeclaration_wined3d_parent_ops =
 375 {
 376     d3d8_vertexdeclaration_wined3d_object_destroyed,
 377 };
 378
 379 HRESULT vertexdeclaration_init(IDirect3DVertexDeclaration8Impl *declaration,
 380         IDirect3DDevice8Impl *device, const DWORD *elements, DWORD shader_handle)
 381 {
 382     WINED3DVERTEXELEMENT *wined3d_elements;
 383     UINT wined3d_element_count;
 384     HRESULT hr;
 385
 386     declaration->lpVtbl = &Direct3DVertexDeclaration8_Vtbl;
 387     declaration->ref_count = 1;
 388     declaration->shader_handle = shader_handle;
 389
 390     wined3d_element_count = convert_to_wined3d_declaration(elements, &declaration->elements_size, &wined3d_elements);
 391     declaration->elements = HeapAlloc(GetProcessHeap(), 0, declaration->elements_size);
 392     if (!declaration->elements)
 393     {
 394         ERR("Failed to allocate vertex declaration elements memory.\n");
 395         HeapFree(GetProcessHeap(), 0, wined3d_elements);
 396         return E_OUTOFMEMORY;
 397     }
 398
 399     memcpy(declaration->elements, elements, declaration->elements_size);
 400
 401     wined3d_mutex_lock();
 402     hr = IWineD3DDevice_CreateVertexDeclaration(device->WineD3DDevice, &declaration->wined3d_vertex_declaration,
 403             (IUnknown *)declaration, &d3d8_vertexdeclaration_wined3d_parent_ops,
 404             wined3d_elements, wined3d_element_count);
 405     wined3d_mutex_unlock();
 406     HeapFree(GetProcessHeap(), 0, wined3d_elements);
 407     if (FAILED(hr))
 408     {
 409         WARN("Failed to create wined3d vertex declaration, hr %#x.\n", hr);
 410         HeapFree(GetProcessHeap(), 0, declaration->elements);
 411         return hr;
 412     }
 413
 414     return D3D_OK;
 415 }
 416
 417 HRESULT vertexdeclaration_init_fvf(IDirect3DVertexDeclaration8Impl *declaration,
 418         IDirect3DDevice8Impl *device, DWORD fvf)
 419 {
 420     HRESULT hr;
 421
 422     declaration->ref_count = 1;
 423     declaration->lpVtbl = &Direct3DVertexDeclaration8_Vtbl;
 424     declaration->elements = NULL;
 425     declaration->elements_size = 0;
 426     declaration->shader_handle = fvf;
 427
 428     hr = IWineD3DDevice_CreateVertexDeclarationFromFVF(device->WineD3DDevice,
 429             &declaration->wined3d_vertex_declaration, (IUnknown *)declaration,
 430             &d3d8_vertexdeclaration_wined3d_parent_ops, fvf);
 431     if (FAILED(hr))
 432     {
 433         WARN("Failed to create wined3d vertex declaration, hr %#x.\n", hr);
 434         return hr;
 435     }
 436
 437     return D3D_OK;
 438 }