dlls/d3dx9_36/surface.c

   1 /*
   2  * Copyright (C) 2009 Tony Wasserka
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  *
  18  */
  19
  20 #include "wine/debug.h"
  21 #include "wine/unicode.h"
  22 #include "d3dx9_36_private.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(d3dx);
  25
  26
  27 /************************************************************
  28  * D3DXGetImageInfoFromFileInMemory
  29  *
  30  * Fills a D3DXIMAGE_INFO structure with info about an image
  31  *
  32  * PARAMS
  33  *   data     [I] pointer to the image file data
  34  *   datasize [I] size of the passed data
  35  *   info     [O] pointer to the destination structure
  36  *
  37  * RETURNS
  38  *   Success: D3D_OK, if info is not NULL and data and datasize make up a valid image file or
  39  *                    if info is NULL and data and datasize are not NULL
  40  *   Failure: D3DXERR_INVALIDDATA, if data is no valid image file and datasize and info are not NULL
  41  *            D3DERR_INVALIDCALL, if data is NULL or
  42  *                                if datasize is 0
  43  *
  44  * NOTES
  45  *   datasize may be bigger than the actual file size
  46  *
  47  */
  48 HRESULT WINAPI D3DXGetImageInfoFromFileInMemory(LPCVOID data, UINT datasize, D3DXIMAGE_INFO *info)
  49 {
  50     FIXME("stub\n");
  51
  52     if(data && datasize && !info) return D3D_OK;
  53     if( !data || !datasize ) return D3DERR_INVALIDCALL;
  54
  55     return E_NOTIMPL;
  56 }
  57
  58 /************************************************************
  59  * D3DXGetImageInfoFromFile
  60  *
  61  * RETURNS
  62  *   Success: D3D_OK, if we successfully load a valid image file or
  63  *                    if we successfully load a file which is no valid image and info is NULL
  64  *   Failure: D3DXERR_INVALIDDATA, if we fail to load file or
  65  *                                 if file is not a valid image file and info is not NULL
  66  *            D3DERR_INVALIDCALL, if file is NULL
  67  *
  68  */
  69 HRESULT WINAPI D3DXGetImageInfoFromFileA(LPCSTR file, D3DXIMAGE_INFO *info)
  70 {
  71     LPWSTR widename;
  72     HRESULT hr;
  73     int strlength;
  74     TRACE("(void): relay\n");
  75
  76     if( !file ) return D3DERR_INVALIDCALL;
  77
  78     strlength = MultiByteToWideChar(CP_ACP, 0, file, -1, NULL, 0);
  79     widename = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, strlength * sizeof(WCHAR));
  80     MultiByteToWideChar(CP_ACP, 0, file, -1, widename, strlength);
  81
  82     hr = D3DXGetImageInfoFromFileW(widename, info);
  83     HeapFree(GetProcessHeap(), 0, widename);
  84
  85     return hr;
  86 }
  87
  88 HRESULT WINAPI D3DXGetImageInfoFromFileW(LPCWSTR file, D3DXIMAGE_INFO *info)
  89 {
  90     HRESULT hr;
  91     DWORD size;
  92     LPVOID buffer;
  93     TRACE("(void): relay\n");
  94
  95     if( !file ) return D3DERR_INVALIDCALL;
  96
  97     hr = map_view_of_file(file, &buffer, &size);
  98     if(FAILED(hr)) return D3DXERR_INVALIDDATA;
  99
 100     hr = D3DXGetImageInfoFromFileInMemory(buffer, size, info);
 101     UnmapViewOfFile(buffer);
 102
 103     return hr;
 104 }
 105
 106 /************************************************************
 107  * D3DXGetImageInfoFromResource
 108  *
 109  * RETURNS
 110  *   Success: D3D_OK, if resource is a valid image file
 111  *   Failure: D3DXERR_INVALIDDATA, if resource is no valid image file or NULL or
 112  *                                 if we fail to load resource
 113  *
 114  */
 115 HRESULT WINAPI D3DXGetImageInfoFromResourceA(HMODULE module, LPCSTR resource, D3DXIMAGE_INFO *info)
 116 {
 117     HRSRC resinfo;
 118     TRACE("(void)\n");
 119
 120     resinfo = FindResourceA(module, resource, (LPCSTR)RT_RCDATA);
 121     if(resinfo) {
 122         LPVOID buffer;
 123         HRESULT hr;
 124         DWORD size;
 125
 126         hr = load_resource_into_memory(module, resinfo, &buffer, &size);
 127         if(FAILED(hr)) return D3DXERR_INVALIDDATA;
 128         return D3DXGetImageInfoFromFileInMemory(buffer, size, info);
 129     }
 130
 131     resinfo = FindResourceA(module, resource, (LPCSTR)RT_BITMAP);
 132     if(resinfo) {
 133         FIXME("Implement loading bitmaps from resource type RT_BITMAP\n");
 134         return E_NOTIMPL;
 135     }
 136     return D3DXERR_INVALIDDATA;
 137 }
 138
 139 HRESULT WINAPI D3DXGetImageInfoFromResourceW(HMODULE module, LPCWSTR resource, D3DXIMAGE_INFO *info)
 140 {
 141     HRSRC resinfo;
 142     TRACE("(void)\n");
 143
 144     resinfo = FindResourceW(module, resource, (LPCWSTR)RT_RCDATA);
 145     if(resinfo) {
 146         LPVOID buffer;
 147         HRESULT hr;
 148         DWORD size;
 149
 150         hr = load_resource_into_memory(module, resinfo, &buffer, &size);
 151         if(FAILED(hr)) return D3DXERR_INVALIDDATA;
 152         return D3DXGetImageInfoFromFileInMemory(buffer, size, info);
 153     }
 154
 155     resinfo = FindResourceW(module, resource, (LPCWSTR)RT_BITMAP);
 156     if(resinfo) {
 157         FIXME("Implement loading bitmaps from resource type RT_BITMAP\n");
 158         return E_NOTIMPL;
 159     }
 160     return D3DXERR_INVALIDDATA;
 161 }
 162
 163 /************************************************************
 164  * D3DXLoadSurfaceFromFileInMemory
 165  *
 166  * Loads data from a given buffer into a surface and fills a given
 167  * D3DXIMAGE_INFO structure with info about the source data.
 168  *
 169  * PARAMS
 170  *   pDestSurface [I] pointer to the surface
 171  *   pDestPalette [I] palette to use
 172  *   pDestRect    [I] to be filled area of the surface
 173  *   pSrcData     [I] pointer to the source data
 174  *   SrcDataSize  [I] size of the source data in bytes
 175  *   pSrcRect     [I] area of the source data to load
 176  *   dwFilter     [I] filter to apply on stretching
 177  *   Colorkey     [I] colorkey
 178  *   pSrcInfo     [O] pointer to a D3DXIMAGE_INFO structure
 179  *
 180  * RETURNS
 181  *   Success: D3D_OK
 182  *   Failure: D3DERR_INVALIDCALL, if pDestSurface or pSrcData or SrcDataSize are NULL
 183  *            D3DXERR_INVALIDDATA, if pSrcData is no valid image file
 184  *
 185  */
 186 HRESULT WINAPI D3DXLoadSurfaceFromFileInMemory(LPDIRECT3DSURFACE9 pDestSurface,
 187                                                CONST PALETTEENTRY *pDestPalette,
 188                                                CONST RECT *pDestRect,
 189                                                LPCVOID pSrcData,
 190                                                UINT SrcDataSize,
 191                                                CONST RECT *pSrcRect,
 192                                                DWORD dwFilter,
 193                                                D3DCOLOR Colorkey,
 194                                                D3DXIMAGE_INFO *pSrcInfo)
 195 {
 196     FIXME("stub\n");
 197     if( !pDestSurface || !pSrcData | !SrcDataSize ) return D3DERR_INVALIDCALL;
 198     return E_NOTIMPL;
 199 }
 200
 201 /************************************************************
 202  * D3DXLoadSurfaceFromFile
 203  */
 204 HRESULT WINAPI D3DXLoadSurfaceFromFileA(LPDIRECT3DSURFACE9 pDestSurface,
 205                                         CONST PALETTEENTRY *pDestPalette,
 206                                         CONST RECT *pDestRect,
 207                                         LPCSTR pSrcFile,
 208                                         CONST RECT *pSrcRect,
 209                                         DWORD dwFilter,
 210                                         D3DCOLOR Colorkey,
 211                                         D3DXIMAGE_INFO *pSrcInfo)
 212 {
 213     LPWSTR pWidename;
 214     HRESULT hr;
 215     int strlength;
 216     TRACE("(void): relay\n");
 217
 218     if( !pSrcFile || !pDestSurface ) return D3DERR_INVALIDCALL;
 219
 220     strlength = MultiByteToWideChar(CP_ACP, 0, pSrcFile, -1, NULL, 0);
 221     pWidename = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, strlength * sizeof(WCHAR));
 222     MultiByteToWideChar(CP_ACP, 0, pSrcFile, -1, pWidename, strlength);
 223
 224     hr = D3DXLoadSurfaceFromFileW(pDestSurface, pDestPalette, pDestRect, pWidename, pSrcRect, dwFilter, Colorkey, pSrcInfo);
 225     HeapFree(GetProcessHeap(), 0, pWidename);
 226
 227     return hr;
 228 }
 229
 230 HRESULT WINAPI D3DXLoadSurfaceFromFileW(LPDIRECT3DSURFACE9 pDestSurface,
 231                                         CONST PALETTEENTRY *pDestPalette,
 232                                         CONST RECT *pDestRect,
 233                                         LPCWSTR pSrcFile,
 234                                         CONST RECT *pSrcRect,
 235                                         DWORD Filter,
 236                                         D3DCOLOR Colorkey,
 237                                         D3DXIMAGE_INFO *pSrcInfo)
 238 {
 239     HRESULT hr;
 240     DWORD dwSize;
 241     LPVOID pBuffer;
 242     TRACE("(void): relay\n");
 243
 244     if( !pSrcFile || !pDestSurface ) return D3DERR_INVALIDCALL;
 245
 246     hr = map_view_of_file(pSrcFile, &pBuffer, &dwSize);
 247     if(FAILED(hr)) return D3DXERR_INVALIDDATA;
 248
 249     hr = D3DXLoadSurfaceFromFileInMemory(pDestSurface, pDestPalette, pDestRect, pBuffer, dwSize, pSrcRect, Filter, Colorkey, pSrcInfo);
 250     UnmapViewOfFile(pBuffer);
 251
 252     return hr;
 253 }
 254
 255 /************************************************************
 256  * D3DXLoadSurfaceFromResource
 257  */
 258 HRESULT WINAPI D3DXLoadSurfaceFromResourceA(LPDIRECT3DSURFACE9 pDestSurface,
 259                                             CONST PALETTEENTRY *pDestPalette,
 260                                             CONST RECT *pDestRect,
 261                                             HMODULE hSrcModule,
 262                                             LPCSTR pResource,
 263                                             CONST RECT *pSrcRect,
 264                                             DWORD dwFilter,
 265                                             D3DCOLOR Colorkey,
 266                                             D3DXIMAGE_INFO *pSrcInfo)
 267 {
 268     HRSRC hResInfo;
 269     TRACE("(void): relay\n");
 270
 271     if( !pDestSurface ) return D3DERR_INVALIDCALL;
 272
 273     hResInfo = FindResourceA(hSrcModule, pResource, (LPCSTR)RT_RCDATA);
 274     if(hResInfo) {
 275         LPVOID pBuffer;
 276         HRESULT hr;
 277         DWORD dwSize;
 278
 279         hr = load_resource_into_memory(hSrcModule, hResInfo, &pBuffer, &dwSize);
 280         if(FAILED(hr)) return D3DXERR_INVALIDDATA;
 281         return D3DXLoadSurfaceFromFileInMemory(pDestSurface, pDestPalette, pDestRect, pBuffer, dwSize, pSrcRect, dwFilter, Colorkey, pSrcInfo);
 282     }
 283
 284     hResInfo = FindResourceA(hSrcModule, pResource, (LPCSTR)RT_BITMAP);
 285     if(hResInfo) {
 286         FIXME("Implement loading bitmaps from resource type RT_BITMAP\n");
 287         return E_NOTIMPL;
 288     }
 289     return D3DXERR_INVALIDDATA;
 290 }
 291
 292 HRESULT WINAPI D3DXLoadSurfaceFromResourceW(LPDIRECT3DSURFACE9 pDestSurface,
 293                                             CONST PALETTEENTRY *pDestPalette,
 294                                             CONST RECT *pDestRect,
 295                                             HMODULE hSrcModule,
 296                                             LPCWSTR pResource,
 297                                             CONST RECT *pSrcRect,
 298                                             DWORD dwFilter,
 299                                             D3DCOLOR Colorkey,
 300                                             D3DXIMAGE_INFO *pSrcInfo)
 301 {
 302     HRSRC hResInfo;
 303     TRACE("(void): relay\n");
 304
 305     if( !pDestSurface ) return D3DERR_INVALIDCALL;
 306
 307     hResInfo = FindResourceW(hSrcModule, pResource, (LPCWSTR)RT_RCDATA);
 308     if(hResInfo) {
 309         LPVOID pBuffer;
 310         HRESULT hr;
 311         DWORD dwSize;
 312
 313         hr = load_resource_into_memory(hSrcModule, hResInfo, &pBuffer, &dwSize);
 314         if(FAILED(hr)) return D3DXERR_INVALIDDATA;
 315         return D3DXLoadSurfaceFromFileInMemory(pDestSurface, pDestPalette, pDestRect, pBuffer, dwSize, pSrcRect, dwFilter, Colorkey, pSrcInfo);
 316     }
 317
 318     hResInfo = FindResourceW(hSrcModule, pResource, (LPCWSTR)RT_BITMAP);
 319     if(hResInfo) {
 320         FIXME("Implement loading bitmaps from resource type RT_BITMAP\n");
 321         return E_NOTIMPL;
 322     }
 323     return D3DXERR_INVALIDDATA;
 324 }
 325
 326
 327 /************************************************************
 328  * copy_simple_data
 329  *
 330  * Copies the source buffer to the destination buffer, performing
 331  * any necessary format conversion and color keying.
 332  * Works only for ARGB formats with 1 - 4 bytes per pixel.
 333  */
 334 static void copy_simple_data(CONST BYTE *src,  UINT  srcpitch, POINT  srcsize, CONST PixelFormatDesc  *srcformat,
 335                              CONST BYTE *dest, UINT destpitch, POINT destsize, CONST PixelFormatDesc *destformat,
 336                              DWORD dwFilter)
 337 {
 338     DWORD srcshift[4], destshift[4];
 339     DWORD srcmask[4], destmask[4];
 340     BOOL process_channel[4];
 341     DWORD channels[4];
 342     DWORD channelmask = 0;
 343
 344     UINT minwidth, minheight;
 345     BYTE *srcptr, *destptr;
 346     UINT i, x, y;
 347
 348     ZeroMemory(channels, sizeof(channels));
 349     ZeroMemory(process_channel, sizeof(process_channel));
 350
 351     for(i = 0;i < 4;i++) {
 352         /* srcshift is used to extract the _relevant_ components */
 353         srcshift[i]  =  srcformat->shift[i] + max( srcformat->bits[i] - destformat->bits[i], 0);
 354
 355         /* destshift is used to move the components to the correct position */
 356         destshift[i] = destformat->shift[i] + max(destformat->bits[i] -  srcformat->bits[i], 0);
 357
 358         srcmask[i]  = ((1 <<  srcformat->bits[i]) - 1) <<  srcformat->shift[i];
 359         destmask[i] = ((1 << destformat->bits[i]) - 1) << destformat->shift[i];
 360
 361         /* channelmask specifies bits which aren't used in the source format but in the destination one */
 362         if(destformat->bits[i]) {
 363             if(srcformat->bits[i]) process_channel[i] = TRUE;
 364             else channelmask |= destmask[i];
 365         }
 366     }
 367
 368     minwidth  = (srcsize.x < destsize.x) ? srcsize.x : destsize.x;
 369     minheight = (srcsize.y < destsize.y) ? srcsize.y : destsize.y;
 370
 371     for(y = 0;y < minheight;y++) {
 372         srcptr  = (BYTE*)( src + y *  srcpitch);
 373         destptr = (BYTE*)(dest + y * destpitch);
 374         for(x = 0;x < minwidth;x++) {
 375             /* extract source color components */
 376             if(srcformat->type == FORMAT_ARGB) {
 377                 const DWORD col = *(DWORD*)srcptr;
 378                 for(i = 0;i < 4;i++)
 379                     if(process_channel[i])
 380                         channels[i] = (col & srcmask[i]) >> srcshift[i];
 381             }
 382
 383             /* recombine the components */
 384             if(destformat->type == FORMAT_ARGB) {
 385                 DWORD* const pixel = (DWORD*)destptr;
 386                 *pixel = 0;
 387
 388                 for(i = 0;i < 4;i++) {
 389                     if(process_channel[i]) {
 390                         /* necessary to make sure that e.g. an X4R4G4B4 white maps to an R8G8B8 white instead of 0xf0f0f0 */
 391                         signed int shift;
 392                         for(shift = destshift[i]; shift > destformat->shift[i]; shift -= srcformat->bits[i]) *pixel |= channels[i] << shift;
 393                         *pixel |= (channels[i] >> (destformat->shift[i] - shift)) << destformat->shift[i];
 394                     }
 395                 }
 396                 *pixel |= channelmask;   /* new channels are set to their maximal value */
 397             }
 398             srcptr  +=  srcformat->bytes_per_pixel;
 399             destptr += destformat->bytes_per_pixel;
 400         }
 401     }
 402 }
 403
 404 /************************************************************
 405  * D3DXLoadSurfaceFromMemory
 406  *
 407  * Loads data from a given memory chunk into a surface,
 408  * applying any of the specified filters.
 409  *
 410  * PARAMS
 411  *   pDestSurface [I] pointer to the surface
 412  *   pDestPalette [I] palette to use
 413  *   pDestRect    [I] to be filled area of the surface
 414  *   pSrcMemory   [I] pointer to the source data
 415  *   SrcFormat    [I] format of the source pixel data
 416  *   SrcPitch     [I] number of bytes in a row
 417  *   pSrcPalette  [I] palette used in the source image
 418  *   pSrcRect     [I] area of the source data to load
 419  *   dwFilter     [I] filter to apply on stretching
 420  *   Colorkey     [I] colorkey
 421  *
 422  * RETURNS
 423  *   Success: D3D_OK, if we successfully load the pixel data into our surface or
 424  *                    if pSrcMemory is NULL but the other parameters are valid
 425  *   Failure: D3DERR_INVALIDCALL, if pDestSurface, SrcPitch or pSrcRect are NULL or
 426  *                                if SrcFormat is an invalid format (other than D3DFMT_UNKNOWN)
 427  *            D3DXERR_INVALIDDATA, if we fail to lock pDestSurface
 428  *            E_FAIL, if SrcFormat is D3DFMT_UNKNOWN or the dimensions of pSrcRect are invalid
 429  *
 430  * NOTES
 431  *   pSrcRect specifies the dimensions of the source data;
 432  *   negative values for pSrcRect are allowed as we're only looking at the width and height anyway.
 433  *
 434  */
 435 HRESULT WINAPI D3DXLoadSurfaceFromMemory(LPDIRECT3DSURFACE9 pDestSurface,
 436                                          CONST PALETTEENTRY *pDestPalette,
 437                                          CONST RECT *pDestRect,
 438                                          LPCVOID pSrcMemory,
 439                                          D3DFORMAT SrcFormat,
 440                                          UINT SrcPitch,
 441                                          CONST PALETTEENTRY *pSrcPalette,
 442                                          CONST RECT *pSrcRect,
 443                                          DWORD dwFilter,
 444                                          D3DCOLOR Colorkey)
 445 {
 446     CONST PixelFormatDesc *srcformatdesc, *destformatdesc;
 447     D3DSURFACE_DESC surfdesc;
 448     D3DLOCKED_RECT lockrect;
 449     POINT srcsize, destsize;
 450     HRESULT hr;
 451     TRACE("(void)\n");
 452
 453     if( !pDestSurface || !pSrcMemory || !pSrcRect ) return D3DERR_INVALIDCALL;
 454     if(SrcFormat == D3DFMT_UNKNOWN || pSrcRect->left >= pSrcRect->right || pSrcRect->top >= pSrcRect->bottom) return E_FAIL;
 455
 456     if(dwFilter != D3DX_FILTER_NONE) return E_NOTIMPL;
 457
 458     IDirect3DSurface9_GetDesc(pDestSurface, &surfdesc);
 459
 460     srcformatdesc = get_format_info(SrcFormat);
 461     destformatdesc = get_format_info(surfdesc.Format);
 462     if( srcformatdesc->type == FORMAT_UNKNOWN ||  srcformatdesc->bytes_per_pixel > 4) return E_NOTIMPL;
 463     if(destformatdesc->type == FORMAT_UNKNOWN || destformatdesc->bytes_per_pixel > 4) return E_NOTIMPL;
 464
 465     srcsize.x = pSrcRect->right - pSrcRect->left;
 466     srcsize.y = pSrcRect->bottom - pSrcRect->top;
 467     if( !pDestRect ) {
 468         destsize.x = surfdesc.Width;
 469         destsize.y = surfdesc.Height;
 470     } else {
 471         destsize.x = pDestRect->right - pDestRect->left;
 472         destsize.y = pDestRect->bottom - pDestRect->top;
 473     }
 474
 475     hr = IDirect3DSurface9_LockRect(pDestSurface, &lockrect, pDestRect, 0);
 476     if(FAILED(hr)) return D3DXERR_INVALIDDATA;
 477
 478     copy_simple_data((CONST BYTE*)pSrcMemory, SrcPitch, srcsize, srcformatdesc,
 479                      (CONST BYTE*)lockrect.pBits, lockrect.Pitch, destsize, destformatdesc,
 480                      dwFilter);
 481
 482     IDirect3DSurface9_UnlockRect(pDestSurface);
 483     return D3D_OK;
 484 }
 485
 486 /************************************************************
 487  * D3DXLoadSurfaceFromSurface
 488  *
 489  * Copies the contents from one surface to another, performing any required
 490  * format conversion, resizing or filtering.
 491  *
 492  * PARAMS
 493  *   pDestSurface [I] pointer to the destination surface
 494  *   pDestPalette [I] palette to use
 495  *   pDestRect    [I] to be filled area of the surface
 496  *   pSrcSurface  [I] pointer to the source surface
 497  *   pSrcPalette  [I] palette used for the source surface
 498  *   pSrcRect     [I] area of the source data to load
 499  *   dwFilter     [I] filter to apply on resizing
 500  *   Colorkey     [I] any ARGB value or 0 to disable color-keying
 501  *
 502  * RETURNS
 503  *   Success: D3D_OK
 504  *   Failure: D3DERR_INVALIDCALL, if pDestSurface or pSrcSurface are NULL
 505  *            D3DXERR_INVALIDDATA, if one of the surfaces is not lockable
 506  *
 507  */
 508 HRESULT WINAPI D3DXLoadSurfaceFromSurface(LPDIRECT3DSURFACE9 pDestSurface,
 509                                           CONST PALETTEENTRY *pDestPalette,
 510                                           CONST RECT *pDestRect,
 511                                           LPDIRECT3DSURFACE9 pSrcSurface,
 512                                           CONST PALETTEENTRY *pSrcPalette,
 513                                           CONST RECT *pSrcRect,
 514                                           DWORD dwFilter,
 515                                           D3DCOLOR Colorkey)
 516 {
 517     RECT rect;
 518     D3DLOCKED_RECT lock;
 519     D3DSURFACE_DESC SrcDesc;
 520     HRESULT hr;
 521     TRACE("(void): relay\n");
 522
 523     if( !pDestSurface || !pSrcSurface ) return D3DERR_INVALIDCALL;
 524
 525     IDirect3DSurface9_GetDesc(pSrcSurface, &SrcDesc);
 526
 527     if( !pSrcRect ) SetRect(&rect, 0, 0, SrcDesc.Width, SrcDesc.Height);
 528     else rect = *pSrcRect;
 529
 530     hr = IDirect3DSurface9_LockRect(pSrcSurface, &lock, NULL, D3DLOCK_READONLY);
 531     if(FAILED(hr)) return D3DXERR_INVALIDDATA;
 532
 533     hr = D3DXLoadSurfaceFromMemory(pDestSurface, pDestPalette, pDestRect,
 534                                    lock.pBits, SrcDesc.Format, lock.Pitch,
 535                                    pSrcPalette, &rect, dwFilter, Colorkey);
 536
 537     IDirect3DSurface9_UnlockRect(pSrcSurface);
 538     return hr;
 539 }