dlls/ddraw/dsurface/dib.c

   1 /*              DIBSection DirectDrawSurface driver
   2  *
   3  * Copyright 1997-2000 Marcus Meissner
   4  * Copyright 1998-2000 Lionel Ulmer
   5  * Copyright 2000-2001 TransGaming Technologies Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23
  24 #include <assert.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #define NONAMELESSUNION
  29 #define NONAMELESSSTRUCT
  30 #include "winerror.h"
  31 #include "bitmap.h"
  32 #include "wine/debug.h"
  33 #include "ddraw_private.h"
  34 #include "dsurface/main.h"
  35 #include "dsurface/dib.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  38
  39 static ICOM_VTABLE(IDirectDrawSurface7) DIB_IDirectDrawSurface7_VTable;
  40
  41 /* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned. */
  42 inline static int get_dib_width_bytes( int width, int depth )
  43 {
  44     int words;
  45
  46     switch(depth)
  47     {
  48     case 1:  words = (width + 31) / 32; break;
  49     case 4:  words = (width + 7) / 8; break;
  50     case 8:  words = (width + 3) / 4; break;
  51     case 15:
  52     case 16: words = (width + 1) / 2; break;
  53     case 24: words = (width * 3 + 3)/4; break;
  54     default:
  55         WARN("(%d): Unsupported depth\n", depth );
  56         /* fall through */
  57     case 32: words = width; break;
  58     }
  59     return 4 * words;
  60 }
  61
  62
  63 static HRESULT create_dib(IDirectDrawSurfaceImpl* This)
  64 {
  65     BITMAPINFO* b_info;
  66     UINT usage;
  67     HDC ddc;
  68     DIB_DirectDrawSurfaceImpl* priv = This->private;
  69
  70     assert(This->surface_desc.lpSurface != NULL);
  71
  72     switch (This->surface_desc.u4.ddpfPixelFormat.u1.dwRGBBitCount)
  73     {
  74     case 16:
  75     case 32:
  76         /* Allocate extra space to store the RGB bit masks. */
  77         b_info = (BITMAPINFO*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  78                                         sizeof(BITMAPINFOHEADER)
  79                                         + 3 * sizeof(DWORD));
  80         break;
  81
  82     case 24:
  83         b_info = (BITMAPINFO*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  84                                         sizeof(BITMAPINFOHEADER));
  85         break;
  86
  87     default:
  88         /* Allocate extra space for a palette. */
  89         b_info = (BITMAPINFO*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  90                                         sizeof(BITMAPINFOHEADER)
  91                                         + sizeof(RGBQUAD)
  92                                         * (1 << This->surface_desc.u4.ddpfPixelFormat.u1.dwRGBBitCount));
  93         break;
  94     }
  95
  96     b_info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
  97     b_info->bmiHeader.biWidth = This->surface_desc.dwWidth;
  98     b_info->bmiHeader.biHeight = -This->surface_desc.dwHeight;
  99     b_info->bmiHeader.biPlanes = 1;
 100     b_info->bmiHeader.biBitCount = This->surface_desc.u4.ddpfPixelFormat.u1.dwRGBBitCount;
 101
 102     if ((This->surface_desc.u4.ddpfPixelFormat.u1.dwRGBBitCount != 16)
 103         && (This->surface_desc.u4.ddpfPixelFormat.u1.dwRGBBitCount != 32))
 104         b_info->bmiHeader.biCompression = BI_RGB;
 105     else
 106         b_info->bmiHeader.biCompression = BI_BITFIELDS;
 107
 108     b_info->bmiHeader.biSizeImage
 109         = (This->surface_desc.u4.ddpfPixelFormat.u1.dwRGBBitCount / 8)
 110         * This->surface_desc.dwWidth * This->surface_desc.dwHeight;
 111
 112     b_info->bmiHeader.biXPelsPerMeter = 0;
 113     b_info->bmiHeader.biYPelsPerMeter = 0;
 114     b_info->bmiHeader.biClrUsed = 0;
 115     b_info->bmiHeader.biClrImportant = 0;
 116
 117     if (!This->surface_desc.u1.lPitch) {
 118         /* This can't happen, right? */
 119         /* or use GDI_GetObj to get it from the created DIB? */
 120         This->surface_desc.u1.lPitch = get_dib_width_bytes(b_info->bmiHeader.biWidth, b_info->bmiHeader.biBitCount);
 121         This->surface_desc.dwFlags |= DDSD_PITCH;
 122     }
 123
 124     switch (This->surface_desc.u4.ddpfPixelFormat.u1.dwRGBBitCount)
 125     {
 126     case 16:
 127     case 32:
 128     {
 129         DWORD *masks = (DWORD *) &(b_info->bmiColors);
 130
 131         usage = 0;
 132         masks[0] = This->surface_desc.u4.ddpfPixelFormat.u2.dwRBitMask;
 133         masks[1] = This->surface_desc.u4.ddpfPixelFormat.u3.dwGBitMask;
 134         masks[2] = This->surface_desc.u4.ddpfPixelFormat.u4.dwBBitMask;
 135     }
 136     break;
 137
 138     case 24:
 139         /* Nothing to do */
 140         usage = DIB_RGB_COLORS;
 141         break;
 142
 143     default:
 144         /* Don't know palette */
 145         usage = 0;
 146         break;
 147     }
 148
 149     ddc = CreateDCA("DISPLAY", NULL, NULL, NULL);
 150     if (ddc == 0)
 151     {
 152         HeapFree(GetProcessHeap(), 0, b_info);
 153         return HRESULT_FROM_WIN32(GetLastError());
 154     }
 155
 156     priv->dib.DIBsection
 157         = DIB_CreateDIBSection(ddc, b_info, usage, &(priv->dib.bitmap_data), 0,
 158                                (DWORD)This->surface_desc.lpSurface,
 159                                This->surface_desc.u1.lPitch);
 160     DeleteDC(ddc);
 161     if (!priv->dib.DIBsection) {
 162         ERR("CreateDIBSection failed!\n");
 163         HeapFree(GetProcessHeap(), 0, b_info);
 164         return HRESULT_FROM_WIN32(GetLastError());
 165     }
 166
 167     TRACE("DIBSection at : %p\n", priv->dib.bitmap_data);
 168
 169     if (!This->surface_desc.lpSurface) {
 170         This->surface_desc.lpSurface = priv->dib.bitmap_data;
 171         This->surface_desc.dwFlags |= DDSD_LPSURFACE;
 172     }
 173
 174     HeapFree(GetProcessHeap(), 0, b_info);
 175
 176     /* I don't think it's worth checking for this. */
 177     if (priv->dib.bitmap_data != This->surface_desc.lpSurface)
 178         ERR("unexpected error creating DirectDrawSurface DIB section\n");
 179
 180     /* this seems like a good place to put the handle for HAL driver use */
 181     This->global_more.hKernelSurface = (ULONG_PTR)priv->dib.DIBsection;
 182
 183     return S_OK;
 184 }
 185
 186 void DIB_DirectDrawSurface_final_release(IDirectDrawSurfaceImpl* This)
 187 {
 188     DIB_DirectDrawSurfaceImpl* priv = This->private;
 189
 190     DeleteObject(priv->dib.DIBsection);
 191
 192     if (!priv->dib.client_memory)
 193         VirtualFree(This->surface_desc.lpSurface, 0, MEM_RELEASE);
 194
 195     Main_DirectDrawSurface_final_release(This);
 196 }
 197
 198 HRESULT DIB_DirectDrawSurface_duplicate_surface(IDirectDrawSurfaceImpl* This,
 199                                                 LPDIRECTDRAWSURFACE7* ppDup)
 200 {
 201     return DIB_DirectDrawSurface_Create(This->ddraw_owner,
 202                                         &This->surface_desc, ppDup, NULL);
 203 }
 204
 205 HRESULT DIB_DirectDrawSurface_Construct(IDirectDrawSurfaceImpl *This,
 206                                         IDirectDrawImpl *pDD,
 207                                         const DDSURFACEDESC2 *pDDSD)
 208 {
 209     HRESULT hr;
 210     DIB_DirectDrawSurfaceImpl* priv = This->private;
 211
 212     TRACE("(%p)->(%p,%p)\n",This,pDD,pDDSD);
 213     hr = Main_DirectDrawSurface_Construct(This, pDD, pDDSD);
 214     if (FAILED(hr)) return hr;
 215
 216     ICOM_INIT_INTERFACE(This, IDirectDrawSurface7,
 217                         DIB_IDirectDrawSurface7_VTable);
 218
 219     This->final_release = DIB_DirectDrawSurface_final_release;
 220     This->duplicate_surface = DIB_DirectDrawSurface_duplicate_surface;
 221     This->flip_data = DIB_DirectDrawSurface_flip_data;
 222
 223     This->get_dc     = DIB_DirectDrawSurface_get_dc;
 224     This->release_dc = DIB_DirectDrawSurface_release_dc;
 225     This->hDC = NULL;
 226
 227     This->set_palette    = DIB_DirectDrawSurface_set_palette;
 228     This->update_palette = DIB_DirectDrawSurface_update_palette;
 229
 230     TRACE("(%ldx%ld, pitch=%ld)\n",
 231           This->surface_desc.dwWidth, This->surface_desc.dwHeight,
 232           This->surface_desc.u1.lPitch);
 233     /* XXX load dwWidth and dwHeight from pDD if they are not specified? */
 234
 235     if (This->surface_desc.dwFlags & DDSD_LPSURFACE)
 236     {
 237         /* "Client memory": it is managed by the application. */
 238         /* XXX What if lPitch is not set? Use dwWidth or fail? */
 239
 240         priv->dib.client_memory = TRUE;
 241     }
 242     else
 243     {
 244         if (!(This->surface_desc.dwFlags & DDSD_PITCH))
 245         {
 246             int pitch = This->surface_desc.u1.lPitch;
 247             if (pitch % 8 != 0)
 248                 pitch += 8 - (pitch % 8);
 249         }
 250         /* XXX else: how should lPitch be verified? */
 251
 252         This->surface_desc.dwFlags |= DDSD_PITCH|DDSD_LPSURFACE;
 253
 254         This->surface_desc.lpSurface
 255             = VirtualAlloc(NULL, This->surface_desc.u1.lPitch
 256                            * This->surface_desc.dwHeight + 4, /* The + 4 here is for dumb games reading after the end of the surface
 257                                                                  when reading the last byte / half using word access */
 258                            MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
 259
 260         if (This->surface_desc.lpSurface == NULL)
 261         {
 262             Main_DirectDrawSurface_final_release(This);
 263             return HRESULT_FROM_WIN32(GetLastError());
 264         }
 265
 266         priv->dib.client_memory = FALSE;
 267     }
 268
 269     hr = create_dib(This);
 270     if (FAILED(hr))
 271     {
 272         if (!priv->dib.client_memory)
 273             VirtualFree(This->surface_desc.lpSurface, 0, MEM_RELEASE);
 274
 275         Main_DirectDrawSurface_final_release(This);
 276
 277         return hr;
 278     }
 279
 280     return DD_OK;
 281 }
 282
 283 /* Not an API */
 284 HRESULT DIB_DirectDrawSurface_Create(IDirectDrawImpl *pDD,
 285                                      const DDSURFACEDESC2 *pDDSD,
 286                                      LPDIRECTDRAWSURFACE7 *ppSurf,
 287                                      IUnknown *pUnkOuter)
 288 {
 289     IDirectDrawSurfaceImpl* This;
 290     HRESULT hr;
 291     assert(pUnkOuter == NULL);
 292
 293     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 294                      sizeof(*This) + sizeof(DIB_DirectDrawSurfaceImpl));
 295     if (This == NULL) return E_OUTOFMEMORY;
 296
 297     This->private = (DIB_DirectDrawSurfaceImpl*)(This+1);
 298
 299     hr = DIB_DirectDrawSurface_Construct(This, pDD, pDDSD);
 300     if (FAILED(hr))
 301         HeapFree(GetProcessHeap(), 0, This);
 302     else
 303         *ppSurf = ICOM_INTERFACE(This, IDirectDrawSurface7);
 304
 305     return hr;
 306
 307 }
 308
 309 /* AddAttachedSurface: generic */
 310 /* AddOverlayDirtyRect: generic, unimplemented */
 311
 312 static HRESULT _Blt_ColorFill(
 313     LPBYTE buf, int width, int height, int bpp, LONG lPitch, DWORD color
 314 ) {
 315     int x, y;
 316     LPBYTE first;
 317
 318     /* Do first row */
 319
 320 #define COLORFILL_ROW(type) { \
 321     type *d = (type *) buf; \
 322     for (x = 0; x < width; x++) \
 323         d[x] = (type) color; \
 324     break; \
 325 }
 326
 327     switch(bpp) {
 328     case 1: COLORFILL_ROW(BYTE)
 329     case 2: COLORFILL_ROW(WORD)
 330     case 3: { BYTE *d = (BYTE *) buf;
 331               for (x = 0; x < width; x++,d+=3) {
 332                 d[0] = (color    ) & 0xFF;
 333                 d[1] = (color>> 8) & 0xFF;
 334                 d[2] = (color>>16) & 0xFF;
 335               }
 336               break;}
 337     case 4: COLORFILL_ROW(DWORD)
 338     default:
 339         FIXME("Color fill not implemented for bpp %d!\n", bpp*8);
 340         return DDERR_UNSUPPORTED;
 341     }
 342
 343 #undef COLORFILL_ROW
 344
 345     /* Now copy first row */
 346     first = buf;
 347     for (y = 1; y < height; y++) {
 348         buf += lPitch;
 349         memcpy(buf, first, width * bpp);
 350     }
 351     return DD_OK;
 352 }
 353
 354 HRESULT WINAPI
 355 DIB_DirectDrawSurface_Blt(LPDIRECTDRAWSURFACE7 iface, LPRECT rdst,
 356                           LPDIRECTDRAWSURFACE7 src, LPRECT rsrc,
 357                           DWORD dwFlags, LPDDBLTFX lpbltfx)
 358 {
 359     ICOM_THIS(IDirectDrawSurfaceImpl,iface);
 360     RECT                xdst,xsrc;
 361     DDSURFACEDESC2      ddesc,sdesc;
 362     HRESULT             ret = DD_OK;
 363     int bpp, srcheight, srcwidth, dstheight, dstwidth, width;
 364     int x, y;
 365     LPBYTE dbuf, sbuf;
 366
 367     TRACE("(%p)->(%p,%p,%p,%08lx,%p)\n", This,rdst,src,rsrc,dwFlags,lpbltfx);
 368
 369     if (TRACE_ON(ddraw)) {
 370         if (rdst) TRACE("\tdestrect :%ldx%ld-%ldx%ld\n",rdst->left,rdst->top,rdst->right,rdst->bottom);
 371         if (rsrc) TRACE("\tsrcrect  :%ldx%ld-%ldx%ld\n",rsrc->left,rsrc->top,rsrc->right,rsrc->bottom);
 372         TRACE("\tflags: ");
 373         DDRAW_dump_DDBLT(dwFlags);
 374         if (dwFlags & DDBLT_DDFX) {
 375             TRACE("\tblitfx: ");
 376             DDRAW_dump_DDBLTFX(lpbltfx->dwDDFX);
 377         }
 378     }
 379
 380     /* First, check if the possible override function handles this case */
 381     if (This->aux_blt != NULL) {
 382         if (This->aux_blt(This, rdst, src, rsrc, dwFlags, lpbltfx) == DD_OK) return DD_OK;
 383     }
 384
 385     DD_STRUCT_INIT(&ddesc);
 386     DD_STRUCT_INIT(&sdesc);
 387
 388     sdesc.dwSize = sizeof(sdesc);
 389     if (src) IDirectDrawSurface7_Lock(src, NULL, &sdesc, DDLOCK_READONLY, 0);
 390     ddesc.dwSize = sizeof(ddesc);
 391     IDirectDrawSurface7_Lock(iface,NULL,&ddesc,DDLOCK_WRITEONLY,0);
 392
 393     if (rdst) {
 394         memcpy(&xdst,rdst,sizeof(xdst));
 395     } else {
 396         xdst.top        = 0;
 397         xdst.bottom     = ddesc.dwHeight;
 398         xdst.left       = 0;
 399         xdst.right      = ddesc.dwWidth;
 400     }
 401
 402     if (rsrc) {
 403         memcpy(&xsrc,rsrc,sizeof(xsrc));
 404     } else {
 405         if (src) {
 406             xsrc.top    = 0;
 407             xsrc.bottom = sdesc.dwHeight;
 408             xsrc.left   = 0;
 409             xsrc.right  = sdesc.dwWidth;
 410         } else {
 411             memset(&xsrc,0,sizeof(xsrc));
 412         }
 413     }
 414
 415     /* First check for the validity of source / destination rectangles. This was
 416        verified using a test application + by MSDN.
 417     */
 418     if ((src != NULL) &&
 419         ((xsrc.bottom > sdesc.dwHeight) || (xsrc.bottom < 0) ||
 420          (xsrc.top > sdesc.dwHeight) || (xsrc.top < 0) ||
 421          (xsrc.left > sdesc.dwWidth) || (xsrc.left < 0) ||
 422          (xsrc.right > sdesc.dwWidth) || (xsrc.right < 0) ||
 423          (xsrc.right < xsrc.left) || (xsrc.bottom < xsrc.top))) {
 424         WARN("Application gave us bad source rectangle for Blt.\n");
 425         return DDERR_INVALIDRECT;
 426     }
 427     /* For the Destination rect, it can be out of bounds on the condition that a clipper
 428        is set for the given surface.
 429     */
 430     if ((This->clipper == NULL) &&
 431         ((xdst.bottom > ddesc.dwHeight) || (xdst.bottom < 0) ||
 432          (xdst.top > ddesc.dwHeight) || (xdst.top < 0) ||
 433          (xdst.left > ddesc.dwWidth) || (xdst.left < 0) ||
 434          (xdst.right > ddesc.dwWidth) || (xdst.right < 0) ||
 435          (xdst.right < xdst.left) || (xdst.bottom < xdst.top))) {
 436         WARN("Application gave us bad destination rectangle for Blt without a clipper set.\n");
 437         return DDERR_INVALIDRECT;
 438     }
 439
 440     /* Now handle negative values in the rectangles. Warning: only supported for now
 441        in the 'simple' cases (ie not in any stretching / rotation cases).
 442
 443        First, the case where nothing is to be done.
 444     */
 445     if (((xdst.bottom <= 0) || (xdst.right <= 0) || (xdst.top >= (int) ddesc.dwHeight) || (xdst.left >= (int) ddesc.dwWidth)) ||
 446         ((src != NULL) &&
 447          ((xsrc.bottom <= 0) || (xsrc.right <= 0) || (xsrc.top >= (int) sdesc.dwHeight) || (xsrc.left >= (int) sdesc.dwWidth))))
 448     {
 449         TRACE("Nothing to be done !\n");
 450         goto release;
 451     }
 452
 453     /* The easy case : the source-less blits.... */
 454     if (src == NULL) {
 455         RECT full_rect;
 456         RECT temp_rect; /* No idea if intersect rect can be the same as one of the source rect */
 457
 458         full_rect.left   = 0;
 459         full_rect.top    = 0;
 460         full_rect.right  = ddesc.dwWidth;
 461         full_rect.bottom = ddesc.dwHeight;
 462         IntersectRect(&temp_rect, &full_rect, &xdst);
 463         xdst = temp_rect;
 464     } else {
 465         /* Only handle clipping on the destination rectangle */
 466         int clip_horiz = (xdst.left < 0) || (xdst.right  > (int) ddesc.dwWidth );
 467         int clip_vert  = (xdst.top  < 0) || (xdst.bottom > (int) ddesc.dwHeight);
 468         if (clip_vert || clip_horiz) {
 469             /* Now check if this is a special case or not... */
 470             if ((((xdst.bottom - xdst.top ) != (xsrc.bottom - xsrc.top )) && clip_vert ) ||
 471                 (((xdst.right  - xdst.left) != (xsrc.right  - xsrc.left)) && clip_horiz) ||
 472                 (dwFlags & DDBLT_DDFX)) {
 473                 WARN("Out of screen rectangle in special case. Not handled right now.\n");
 474                 goto release;
 475             }
 476
 477             if (clip_horiz) {
 478               if (xdst.left < 0) { xsrc.left -= xdst.left; xdst.left = 0; }
 479               if (xdst.right > ddesc.dwWidth) { xsrc.right -= (xdst.right - (int) ddesc.dwWidth); xdst.right = (int) ddesc.dwWidth; }
 480             }
 481             if (clip_vert) {
 482                 if (xdst.top < 0) { xsrc.top -= xdst.top; xdst.top = 0; }
 483                 if (xdst.bottom > ddesc.dwHeight) { xsrc.bottom -= (xdst.bottom - (int) ddesc.dwHeight); xdst.bottom = (int) ddesc.dwHeight; }
 484             }
 485             /* And check if after clipping something is still to be done... */
 486             if ((xdst.bottom <= 0) || (xdst.right <= 0) || (xdst.top >= (int) ddesc.dwHeight) || (xdst.left >= (int) ddesc.dwWidth) ||
 487                 (xsrc.bottom <= 0) || (xsrc.right <= 0) || (xsrc.top >= (int) sdesc.dwHeight) || (xsrc.left >= (int) sdesc.dwWidth)) {
 488                 TRACE("Nothing to be done after clipping !\n");
 489                 goto release;
 490             }
 491         }
 492     }
 493
 494     bpp = GET_BPP(ddesc);
 495     srcheight = xsrc.bottom - xsrc.top;
 496     srcwidth = xsrc.right - xsrc.left;
 497     dstheight = xdst.bottom - xdst.top;
 498     dstwidth = xdst.right - xdst.left;
 499     width = (xdst.right - xdst.left) * bpp;
 500
 501     assert(width <= ddesc.u1.lPitch);
 502
 503     dbuf = (BYTE*)ddesc.lpSurface+(xdst.top*ddesc.u1.lPitch)+(xdst.left*bpp);
 504
 505     if (dwFlags & (DDBLT_WAIT|DDBLT_ASYNC))
 506     {
 507         static BOOL displayed = FALSE;
 508         if (!displayed)
 509         {
 510             FIXME("dwFlags DDBLT_WAIT and/or DDBLT_ASYNC: can't handle right now.\n");
 511             displayed = TRUE;
 512         }
 513         dwFlags &= ~(DDBLT_WAIT|DDBLT_ASYNC);
 514     }
 515
 516     /* First, all the 'source-less' blits */
 517     if (dwFlags & DDBLT_COLORFILL) {
 518         ret = _Blt_ColorFill(dbuf, dstwidth, dstheight, bpp,
 519                              ddesc.u1.lPitch, lpbltfx->u5.dwFillColor);
 520         dwFlags &= ~DDBLT_COLORFILL;
 521     }
 522
 523     if (dwFlags & DDBLT_DEPTHFILL)
 524         FIXME("DDBLT_DEPTHFILL needs to be implemented!\n");
 525     if (dwFlags & DDBLT_ROP) {
 526         /* Catch some degenerate cases here */
 527         switch(lpbltfx->dwROP) {
 528         case BLACKNESS:
 529             ret = _Blt_ColorFill(dbuf,dstwidth,dstheight,bpp,ddesc.u1.lPitch,0);
 530             break;
 531         case 0xAA0029: /* No-op */
 532             break;
 533         case WHITENESS:
 534             ret = _Blt_ColorFill(dbuf,dstwidth,dstheight,bpp,ddesc.u1.lPitch,~0);
 535             break;
 536         case SRCCOPY: /* well, we do that below ? */
 537             break;
 538         default:
 539             FIXME("Unsupported raster op: %08lx  Pattern: %p\n", lpbltfx->dwROP, lpbltfx->u5.lpDDSPattern);
 540             goto error;
 541         }
 542         dwFlags &= ~DDBLT_ROP;
 543     }
 544     if (dwFlags & DDBLT_DDROPS) {
 545         FIXME("\tDdraw Raster Ops: %08lx  Pattern: %p\n", lpbltfx->dwDDROP, lpbltfx->u5.lpDDSPattern);
 546     }
 547     /* Now the 'with source' blits */
 548     if (src) {
 549         LPBYTE sbase;
 550         int sx, xinc, sy, yinc;
 551
 552         if (!dstwidth || !dstheight) /* hmm... stupid program ? */
 553             goto release;
 554         sbase = (BYTE*)sdesc.lpSurface+(xsrc.top*sdesc.u1.lPitch)+xsrc.left*bpp;
 555         xinc = (srcwidth << 16) / dstwidth;
 556         yinc = (srcheight << 16) / dstheight;
 557
 558         if (!dwFlags) {
 559             /* No effects, we can cheat here */
 560             if (dstwidth == srcwidth) {
 561                 if (dstheight == srcheight) {
 562                     /* No stretching in either direction. This needs to be as
 563                      * fast as possible */
 564                     sbuf = sbase;
 565
 566                     /* check for overlapping surfaces */
 567                     if (src != iface || xdst.top < xsrc.top ||
 568                         xdst.right <= xsrc.left || xsrc.right <= xdst.left)
 569                     {
 570                         /* no overlap, or dst above src, so copy from top downwards */
 571                         for (y = 0; y < dstheight; y++)
 572                         {
 573                             memcpy(dbuf, sbuf, width);
 574                             sbuf += sdesc.u1.lPitch;
 575                             dbuf += ddesc.u1.lPitch;
 576                         }
 577                     }
 578                     else if (xdst.top > xsrc.top)  /* copy from bottom upwards */
 579                     {
 580                         sbuf += (sdesc.u1.lPitch*dstheight);
 581                         dbuf += (ddesc.u1.lPitch*dstheight);
 582                         for (y = 0; y < dstheight; y++)
 583                         {
 584                             sbuf -= sdesc.u1.lPitch;
 585                             dbuf -= ddesc.u1.lPitch;
 586                             memcpy(dbuf, sbuf, width);
 587                         }
 588                     }
 589                     else /* src and dst overlapping on the same line, use memmove */
 590                     {
 591                         for (y = 0; y < dstheight; y++)
 592                         {
 593                             memmove(dbuf, sbuf, width);
 594                             sbuf += sdesc.u1.lPitch;
 595                             dbuf += ddesc.u1.lPitch;
 596                         }
 597                     }
 598                 } else {
 599                     /* Stretching in Y direction only */
 600                     for (y = sy = 0; y < dstheight; y++, sy += yinc) {
 601                         sbuf = sbase + (sy >> 16) * sdesc.u1.lPitch;
 602                         memcpy(dbuf, sbuf, width);
 603                         dbuf += ddesc.u1.lPitch;
 604                     }
 605                 }
 606             } else {
 607                 /* Stretching in X direction */
 608                 int last_sy = -1;
 609                 for (y = sy = 0; y < dstheight; y++, sy += yinc) {
 610                     sbuf = sbase + (sy >> 16) * sdesc.u1.lPitch;
 611
 612                     if ((sy >> 16) == (last_sy >> 16)) {
 613                         /* this sourcerow is the same as last sourcerow -
 614                          * copy already stretched row
 615                          */
 616                         memcpy(dbuf, dbuf - ddesc.u1.lPitch, width);
 617                     } else {
 618 #define STRETCH_ROW(type) { \
 619                     type *s = (type *) sbuf, *d = (type *) dbuf; \
 620                     for (x = sx = 0; x < dstwidth; x++, sx += xinc) \
 621                     d[x] = s[sx >> 16]; \
 622                     break; }
 623
 624                     switch(bpp) {
 625                     case 1: STRETCH_ROW(BYTE)
 626                     case 2: STRETCH_ROW(WORD)
 627                     case 4: STRETCH_ROW(DWORD)
 628                     case 3: {
 629                         LPBYTE s,d = dbuf;
 630                         for (x = sx = 0; x < dstwidth; x++, sx+= xinc) {
 631                             DWORD pixel;
 632
 633                             s = sbuf+3*(sx>>16);
 634                             pixel = s[0]|(s[1]<<8)|(s[2]<<16);
 635                             d[0] = (pixel    )&0xff;
 636                             d[1] = (pixel>> 8)&0xff;
 637                             d[2] = (pixel>>16)&0xff;
 638                             d+=3;
 639                         }
 640                         break;
 641                     }
 642                     default:
 643                         FIXME("Stretched blit not implemented for bpp %d!\n", bpp*8);
 644                         ret = DDERR_UNSUPPORTED;
 645                         goto error;
 646                     }
 647 #undef STRETCH_ROW
 648                     }
 649                     dbuf += ddesc.u1.lPitch;
 650                     last_sy = sy;
 651                 }
 652             }
 653         } else {
 654            LONG dstyinc = ddesc.u1.lPitch, dstxinc = bpp;
 655            DWORD keylow = 0, keyhigh = 0;
 656            if (dwFlags & (DDBLT_KEYSRC | DDBLT_KEYDEST | DDBLT_KEYSRCOVERRIDE | DDBLT_KEYDESTOVERRIDE)) {
 657
 658               if (dwFlags & DDBLT_KEYSRC) {
 659                  keylow  = sdesc.ddckCKSrcBlt.dwColorSpaceLowValue;
 660                  keyhigh = sdesc.ddckCKSrcBlt.dwColorSpaceHighValue;
 661               } else if (dwFlags & DDBLT_KEYDEST){
 662                  keylow  = ddesc.ddckCKDestBlt.dwColorSpaceLowValue;
 663                  keyhigh = ddesc.ddckCKDestBlt.dwColorSpaceHighValue;
 664               } else if (dwFlags & DDBLT_KEYSRCOVERRIDE) {
 665                  keylow  = lpbltfx->ddckSrcColorkey.dwColorSpaceLowValue;
 666                  keyhigh = lpbltfx->ddckSrcColorkey.dwColorSpaceHighValue;
 667               } else {
 668                  keylow  = lpbltfx->ddckDestColorkey.dwColorSpaceLowValue;
 669                  keyhigh = lpbltfx->ddckDestColorkey.dwColorSpaceHighValue;
 670               }
 671               dwFlags &= ~(DDBLT_KEYSRC | DDBLT_KEYDEST | DDBLT_KEYSRCOVERRIDE | DDBLT_KEYDESTOVERRIDE);
 672            }
 673
 674            if (dwFlags & DDBLT_DDFX)  {
 675               LPBYTE dTopLeft, dTopRight, dBottomLeft, dBottomRight, tmp;
 676               LONG tmpxy;
 677               dTopLeft     = dbuf;
 678               dTopRight    = dbuf+((dstwidth-1)*bpp);
 679               dBottomLeft  = dTopLeft+((dstheight-1)*ddesc.u1.lPitch);
 680               dBottomRight = dBottomLeft+((dstwidth-1)*bpp);
 681
 682               if (lpbltfx->dwDDFX & DDBLTFX_ARITHSTRETCHY){
 683                  /* I don't think we need to do anything about this flag */
 684                  WARN("dwflags=DDBLT_DDFX nothing done for DDBLTFX_ARITHSTRETCHY\n");
 685               }
 686               if (lpbltfx->dwDDFX & DDBLTFX_MIRRORLEFTRIGHT) {
 687                  tmp          = dTopRight;
 688                  dTopRight    = dTopLeft;
 689                  dTopLeft     = tmp;
 690                  tmp          = dBottomRight;
 691                  dBottomRight = dBottomLeft;
 692                  dBottomLeft  = tmp;
 693                  dstxinc = dstxinc *-1;
 694               }
 695               if (lpbltfx->dwDDFX & DDBLTFX_MIRRORUPDOWN) {
 696                  tmp          = dTopLeft;
 697                  dTopLeft     = dBottomLeft;
 698                  dBottomLeft  = tmp;
 699                  tmp          = dTopRight;
 700                  dTopRight    = dBottomRight;
 701                  dBottomRight = tmp;
 702                  dstyinc = dstyinc *-1;
 703               }
 704               if (lpbltfx->dwDDFX & DDBLTFX_NOTEARING) {
 705                  /* I don't think we need to do anything about this flag */
 706                  WARN("dwflags=DDBLT_DDFX nothing done for DDBLTFX_NOTEARING\n");
 707               }
 708               if (lpbltfx->dwDDFX & DDBLTFX_ROTATE180) {
 709                  tmp          = dBottomRight;
 710                  dBottomRight = dTopLeft;
 711                  dTopLeft     = tmp;
 712                  tmp          = dBottomLeft;
 713                  dBottomLeft  = dTopRight;
 714                  dTopRight    = tmp;
 715                  dstxinc = dstxinc * -1;
 716                  dstyinc = dstyinc * -1;
 717               }
 718               if (lpbltfx->dwDDFX & DDBLTFX_ROTATE270) {
 719                  tmp          = dTopLeft;
 720                  dTopLeft     = dBottomLeft;
 721                  dBottomLeft  = dBottomRight;
 722                  dBottomRight = dTopRight;
 723                  dTopRight    = tmp;
 724                  tmpxy   = dstxinc;
 725                  dstxinc = dstyinc;
 726                  dstyinc = tmpxy;
 727                  dstxinc = dstxinc * -1;
 728               }
 729               if (lpbltfx->dwDDFX & DDBLTFX_ROTATE90) {
 730                  tmp          = dTopLeft;
 731                  dTopLeft     = dTopRight;
 732                  dTopRight    = dBottomRight;
 733                  dBottomRight = dBottomLeft;
 734                  dBottomLeft  = tmp;
 735                  tmpxy   = dstxinc;
 736                  dstxinc = dstyinc;
 737                  dstyinc = tmpxy;
 738                  dstyinc = dstyinc * -1;
 739               }
 740               if (lpbltfx->dwDDFX & DDBLTFX_ZBUFFERBASEDEST) {
 741                  /* I don't think we need to do anything about this flag */
 742                  WARN("dwflags=DDBLT_DDFX nothing done for DDBLTFX_ZBUFFERBASEDEST\n");
 743               }
 744               dbuf = dTopLeft;
 745               dwFlags &= ~(DDBLT_DDFX);
 746            }
 747
 748 #define COPY_COLORKEY_FX(type) { \
 749             type *s = (type *) sbuf, *d = (type *) dbuf, *dx, tmp; \
 750             for (y = sy = 0; y < dstheight; y++, sy += yinc) { \
 751                (LPBYTE)s = sbase + (sy >> 16) * sdesc.u1.lPitch; \
 752                (LPBYTE)dx = d; \
 753                for (x = sx = 0; x < dstwidth; x++, sx += xinc) { \
 754                   tmp = s[sx >> 16]; \
 755                   if (tmp < keylow || tmp > keyhigh) dx[0] = tmp; \
 756                   (LPBYTE)dx += dstxinc; \
 757                   } \
 758                (LPBYTE)d += dstyinc; \
 759             } \
 760             break; }
 761
 762             switch (bpp) {
 763             case 1: COPY_COLORKEY_FX(BYTE)
 764             case 2: COPY_COLORKEY_FX(WORD)
 765             case 4: COPY_COLORKEY_FX(DWORD)
 766             case 3: {LPBYTE s,d = dbuf, dx;
 767                 for (y = sy = 0; y < dstheight; y++, sy += yinc) {
 768                     sbuf = sbase + (sy >> 16) * sdesc.u1.lPitch;
 769                     dx = d;
 770                     for (x = sx = 0; x < dstwidth; x++, sx+= xinc) {
 771                         DWORD pixel;
 772                         s = sbuf+3*(sx>>16);
 773                         pixel = s[0]|(s[1]<<8)|(s[2]<<16);
 774                         if (pixel < keylow || pixel > keyhigh){
 775                             dx[0] = (pixel    )&0xff;
 776                             dx[1] = (pixel>> 8)&0xff;
 777                             dx[2] = (pixel>>16)&0xff;
 778                         }
 779                         dx+= dstxinc;
 780                     }
 781                     d += dstyinc;
 782                 }
 783                 break;}
 784             default:
 785                FIXME("%s color-keyed blit not implemented for bpp %d!\n",
 786                   (dwFlags & DDBLT_KEYSRC) ? "Source" : "Destination", bpp*8);
 787                   ret = DDERR_UNSUPPORTED;
 788                   goto error;
 789 #undef COPY_COLORKEY_FX
 790             }
 791         }
 792     }
 793
 794 error:
 795     if (dwFlags && FIXME_ON(ddraw)) {
 796         FIXME("\tUnsupported flags: ");
 797         DDRAW_dump_DDBLT(dwFlags);
 798     }
 799
 800 release:
 801     IDirectDrawSurface7_Unlock(iface,NULL);
 802     if (src) IDirectDrawSurface7_Unlock(src,NULL);
 803     return DD_OK;
 804 }
 805
 806 /* BltBatch: generic, unimplemented */
 807
 808 HRESULT WINAPI
 809 DIB_DirectDrawSurface_BltFast(LPDIRECTDRAWSURFACE7 iface, DWORD dstx,
 810                               DWORD dsty, LPDIRECTDRAWSURFACE7 src,
 811                               LPRECT rsrc, DWORD trans)
 812 {
 813     ICOM_THIS(IDirectDrawSurfaceImpl,iface);
 814     int                 bpp, w, h, x, y;
 815     DDSURFACEDESC2      ddesc,sdesc;
 816     HRESULT             ret = DD_OK;
 817     LPBYTE              sbuf, dbuf;
 818     RECT                rsrc2;
 819     RECT                lock_src, lock_dst;
 820
 821     if (TRACE_ON(ddraw)) {
 822         TRACE("(%p)->(%ld,%ld,%p,%p,%08lx)\n",
 823                 This,dstx,dsty,src,rsrc,trans
 824         );
 825         TRACE("\ttrans:");
 826         if (FIXME_ON(ddraw))
 827           DDRAW_dump_DDBLTFAST(trans);
 828         if (rsrc)
 829           TRACE("\tsrcrect: %ldx%ld-%ldx%ld\n",rsrc->left,rsrc->top,rsrc->right,rsrc->bottom);
 830         else
 831           TRACE(" srcrect: NULL\n");
 832     }
 833
 834     /* First, check if the possible override function handles this case */
 835     if (This->aux_bltfast != NULL) {
 836         if (This->aux_bltfast(This, dstx, dsty, src, rsrc, trans) == DD_OK) return DD_OK;
 837     }
 838
 839     /* Get the surface description without locking to first compute the width / height */
 840     ddesc = This->surface_desc;
 841     sdesc = (ICOM_OBJECT(IDirectDrawSurfaceImpl, IDirectDrawSurface7, src))->surface_desc;
 842
 843     if (!rsrc) {
 844         WARN("rsrc is NULL!\n");
 845         rsrc = &rsrc2;
 846         rsrc->left = rsrc->top = 0;
 847         rsrc->right = sdesc.dwWidth;
 848         rsrc->bottom = sdesc.dwHeight;
 849     }
 850
 851     h=rsrc->bottom-rsrc->top;
 852     if (h>ddesc.dwHeight-dsty) h=ddesc.dwHeight-dsty;
 853     if (h>sdesc.dwHeight-rsrc->top) h=sdesc.dwHeight-rsrc->top;
 854     if (h<=0) return DDERR_INVALIDRECT;
 855
 856     w=rsrc->right-rsrc->left;
 857     if (w>ddesc.dwWidth-dstx) w=ddesc.dwWidth-dstx;
 858     if (w>sdesc.dwWidth-rsrc->left) w=sdesc.dwWidth-rsrc->left;
 859     if (w<=0) return DDERR_INVALIDRECT;
 860
 861     /* Now compute the locking rectangle... */
 862     lock_src.left = rsrc->left;
 863     lock_src.top = rsrc->top;
 864     lock_src.right = lock_src.left + w;
 865     lock_src.bottom = lock_src.top + h;
 866
 867     lock_dst.left = dstx;
 868     lock_dst.top = dsty;
 869     lock_dst.right = dstx + w;
 870     lock_dst.bottom = dsty + h;
 871
 872     /* We need to lock the surfaces, or we won't get refreshes when done. */
 873     sdesc.dwSize = sizeof(sdesc);
 874     IDirectDrawSurface7_Lock(src, &lock_src, &sdesc, DDLOCK_READONLY, 0);
 875     ddesc.dwSize = sizeof(ddesc);
 876     IDirectDrawSurface7_Lock(iface, &lock_dst, &ddesc, DDLOCK_WRITEONLY, 0);
 877
 878     bpp = GET_BPP(This->surface_desc);
 879     sbuf = (BYTE *) sdesc.lpSurface;
 880     dbuf = (BYTE *) ddesc.lpSurface;
 881
 882     if (trans & (DDBLTFAST_SRCCOLORKEY | DDBLTFAST_DESTCOLORKEY)) {
 883         DWORD keylow, keyhigh;
 884         if (trans & DDBLTFAST_SRCCOLORKEY) {
 885             keylow  = sdesc.ddckCKSrcBlt.dwColorSpaceLowValue;
 886             keyhigh = sdesc.ddckCKSrcBlt.dwColorSpaceHighValue;
 887         } else {
 888             /* I'm not sure if this is correct */
 889             FIXME("DDBLTFAST_DESTCOLORKEY not fully supported yet.\n");
 890             keylow  = ddesc.ddckCKDestBlt.dwColorSpaceLowValue;
 891             keyhigh = ddesc.ddckCKDestBlt.dwColorSpaceHighValue;
 892         }
 893
 894 #define COPYBOX_COLORKEY(type) { \
 895             type *d, *s, tmp; \
 896             s = (type *) sdesc.lpSurface; \
 897             d = (type *) ddesc.lpSurface; \
 898             for (y = 0; y < h; y++) { \
 899                 for (x = 0; x < w; x++) { \
 900                     tmp = s[x]; \
 901                     if (tmp < keylow || tmp > keyhigh) d[x] = tmp; \
 902                 } \
 903                 (LPBYTE)s += sdesc.u1.lPitch; \
 904                 (LPBYTE)d += ddesc.u1.lPitch; \
 905             } \
 906             break; \
 907         }
 908
 909         switch (bpp) {
 910             case 1: COPYBOX_COLORKEY(BYTE)
 911             case 2: COPYBOX_COLORKEY(WORD)
 912             case 4: COPYBOX_COLORKEY(DWORD)
 913             default:
 914                 FIXME("Source color key blitting not supported for bpp %d\n",bpp*8);
 915                 ret = DDERR_UNSUPPORTED;
 916                 goto error;
 917         }
 918 #undef COPYBOX_COLORKEY
 919     } else {
 920         int width = w * bpp;
 921
 922         for (y = 0; y < h; y++) {
 923             memcpy(dbuf, sbuf, width);
 924             sbuf += sdesc.u1.lPitch;
 925             dbuf += ddesc.u1.lPitch;
 926         }
 927     }
 928
 929 error:
 930     IDirectDrawSurface7_Unlock(iface, &lock_dst);
 931     IDirectDrawSurface7_Unlock(src, &lock_src);
 932     return ret;
 933 }
 934
 935 /* ChangeUniquenessValue: generic */
 936 /* DeleteAttachedSurface: generic */
 937 /* EnumAttachedSurfaces: generic */
 938 /* EnumOverlayZOrders: generic, unimplemented */
 939
 940 BOOL DIB_DirectDrawSurface_flip_data(IDirectDrawSurfaceImpl* front,
 941                                      IDirectDrawSurfaceImpl* back,
 942                                      DWORD dwFlags)
 943 {
 944     DIB_DirectDrawSurfaceImpl* front_priv = front->private;
 945     DIB_DirectDrawSurfaceImpl* back_priv = back->private;
 946
 947     TRACE("(%p,%p)\n",front,back);
 948
 949     {
 950         HBITMAP tmp;
 951         tmp = front_priv->dib.DIBsection;
 952         front_priv->dib.DIBsection = back_priv->dib.DIBsection;
 953         back_priv->dib.DIBsection = tmp;
 954     }
 955
 956     {
 957         void* tmp;
 958         tmp = front_priv->dib.bitmap_data;
 959         front_priv->dib.bitmap_data = back_priv->dib.bitmap_data;
 960         back_priv->dib.bitmap_data = tmp;
 961
 962         tmp = front->surface_desc.lpSurface;
 963         front->surface_desc.lpSurface = back->surface_desc.lpSurface;
 964         back->surface_desc.lpSurface = tmp;
 965     }
 966
 967     /* client_memory should not be different, but just in case */
 968     {
 969         BOOL tmp;
 970         tmp = front_priv->dib.client_memory;
 971         front_priv->dib.client_memory = back_priv->dib.client_memory;
 972         back_priv->dib.client_memory = tmp;
 973     }
 974
 975     return Main_DirectDrawSurface_flip_data(front, back, dwFlags);
 976 }
 977
 978 /* Flip: generic */
 979 /* FreePrivateData: generic */
 980 /* GetAttachedSurface: generic */
 981 /* GetBltStatus: generic */
 982 /* GetCaps: generic (Returns the caps from This->surface_desc.) */
 983 /* GetClipper: generic */
 984 /* GetColorKey: generic */
 985
 986 HRESULT DIB_DirectDrawSurface_alloc_dc(IDirectDrawSurfaceImpl* This, HDC* phDC)
 987 {
 988     DIB_PRIV_VAR(priv, This);
 989     HDC hDC;
 990
 991     TRACE("Grabbing a DC for surface: %p\n", This);
 992
 993     hDC = CreateCompatibleDC(0);
 994     priv->dib.holdbitmap = SelectObject(hDC, priv->dib.DIBsection);
 995     if (This->palette)
 996         SelectPalette(hDC, This->palette->hpal, FALSE);
 997
 998     *phDC = hDC;
 999
1000     return S_OK;
1001 }
1002
1003 HRESULT DIB_DirectDrawSurface_free_dc(IDirectDrawSurfaceImpl* This, HDC hDC)
1004 {
1005     DIB_PRIV_VAR(priv, This);
1006
1007     TRACE("Releasing DC for surface: %p\n", This);
1008
1009     SelectObject(hDC, priv->dib.holdbitmap);
1010     DeleteDC(hDC);
1011
1012     return S_OK;
1013 }
1014
1015 HRESULT DIB_DirectDrawSurface_get_dc(IDirectDrawSurfaceImpl* This, HDC* phDC)
1016 {
1017     return DIB_DirectDrawSurface_alloc_dc(This, phDC);
1018 }
1019
1020 HRESULT DIB_DirectDrawSurface_release_dc(IDirectDrawSurfaceImpl* This, HDC hDC)
1021 {
1022     return DIB_DirectDrawSurface_free_dc(This, hDC);
1023 }
1024
1025 /* GetDDInterface: generic */
1026 /* GetFlipStatus: generic */
1027 /* GetLOD: generic */
1028 /* GetOverlayPosition: generic */
1029 /* GetPalette: generic */
1030 /* GetPixelFormat: generic */
1031 /* GetPriority: generic */
1032 /* GetPrivateData: generic */
1033 /* GetSurfaceDesc: generic */
1034 /* GetUniquenessValue: generic */
1035 /* Initialize: generic */
1036 /* IsLost: generic */
1037 /* Lock: generic with callback? */
1038 /* PageLock: generic */
1039 /* PageUnlock: generic */
1040
1041 HRESULT WINAPI
1042 DIB_DirectDrawSurface_Restore(LPDIRECTDRAWSURFACE7 iface)
1043 {
1044     TRACE("(%p)\n",iface);
1045     return DD_OK;       /* ??? */
1046 }
1047
1048 /* SetClipper: generic */
1049 /* SetColorKey: generic */
1050 /* SetLOD: generic */
1051 /* SetOverlayPosition: generic */
1052
1053 void DIB_DirectDrawSurface_set_palette(IDirectDrawSurfaceImpl* This,
1054                                        IDirectDrawPaletteImpl* pal)
1055 {
1056     if (!pal) return;
1057     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
1058         This->update_palette(This, pal,
1059                              0, pal->palNumEntries,
1060                              pal->palents);
1061 }
1062
1063 void DIB_DirectDrawSurface_update_palette(IDirectDrawSurfaceImpl* This,
1064                                           IDirectDrawPaletteImpl* pal,
1065                                           DWORD dwStart, DWORD dwCount,
1066                                           LPPALETTEENTRY palent)
1067 {
1068     RGBQUAD col[256];
1069     int n;
1070     HDC dc;
1071
1072     TRACE("updating primary palette\n");
1073     for (n=0; n<dwCount; n++) {
1074       col[n].rgbRed   = palent[n].peRed;
1075       col[n].rgbGreen = palent[n].peGreen;
1076       col[n].rgbBlue  = palent[n].peBlue;
1077       col[n].rgbReserved = 0;
1078     }
1079     This->get_dc(This, &dc);
1080     SetDIBColorTable(dc, dwStart, dwCount, col);
1081     This->release_dc(This, dc);
1082
1083     /* Propagate change to backbuffers if there are any */
1084     /* Basically this is a modification of the Flip code to find the backbuffer */
1085     /* and duplicate the palette update there as well */
1086     if ((This->surface_desc.ddsCaps.dwCaps&(DDSCAPS_FLIP|DDSCAPS_FRONTBUFFER))
1087         == (DDSCAPS_FLIP|DDSCAPS_FRONTBUFFER))
1088     {
1089         static DDSCAPS2 back_caps = { DDSCAPS_BACKBUFFER };
1090         LPDIRECTDRAWSURFACE7 tgt;
1091
1092         HRESULT hr = IDirectDrawSurface7_GetAttachedSurface(ICOM_INTERFACE(This,IDirectDrawSurface7),
1093                                                             &back_caps, &tgt);
1094         if (!FAILED(hr))
1095         {
1096             IDirectDrawSurfaceImpl* target = ICOM_OBJECT(IDirectDrawSurfaceImpl,
1097                                                          IDirectDrawSurface7,tgt);
1098             IDirectDrawSurface7_Release(tgt);
1099             target->get_dc(target, &dc);
1100             SetDIBColorTable(dc, dwStart, dwCount, col);
1101             target->release_dc(target, dc);
1102         }
1103     }
1104 }
1105
1106 /* SetPalette: generic */
1107 /* SetPriority: generic */
1108 /* SetPrivateData: generic */
1109
1110 HRESULT WINAPI
1111 DIB_DirectDrawSurface_SetSurfaceDesc(LPDIRECTDRAWSURFACE7 iface,
1112                                      LPDDSURFACEDESC2 pDDSD, DWORD dwFlags)
1113 {
1114     ICOM_THIS(IDirectDrawSurfaceImpl,iface);
1115     DIB_PRIV_VAR(priv, This);
1116     HRESULT hr = DD_OK;
1117     DWORD flags = pDDSD->dwFlags;
1118
1119     if (TRACE_ON(ddraw)) {
1120         TRACE("(%p)->(%p,%08lx)\n",iface,pDDSD,dwFlags);
1121         DDRAW_dump_surface_desc(pDDSD);
1122     }
1123
1124     if (pDDSD->dwFlags & DDSD_PIXELFORMAT) {
1125         flags &= ~DDSD_PIXELFORMAT;
1126         if (flags & DDSD_LPSURFACE) {
1127             This->surface_desc.u4.ddpfPixelFormat = pDDSD->u4.ddpfPixelFormat;
1128         } else {
1129             FIXME("Change of pixel format without surface re-allocation is not supported !\n");
1130         }
1131     }
1132     if (pDDSD->dwFlags & DDSD_LPSURFACE) {
1133         HBITMAP oldbmp = priv->dib.DIBsection;
1134         LPVOID oldsurf = This->surface_desc.lpSurface;
1135         BOOL oldc = priv->dib.client_memory;
1136
1137         flags &= ~DDSD_LPSURFACE;
1138
1139         TRACE("new lpSurface=%p\n",pDDSD->lpSurface);
1140         This->surface_desc.lpSurface = pDDSD->lpSurface;
1141         priv->dib.client_memory = TRUE;
1142
1143         hr = create_dib(This);
1144         if (FAILED(hr))
1145         {
1146             priv->dib.DIBsection = oldbmp;
1147             This->surface_desc.lpSurface = oldsurf;
1148             priv->dib.client_memory = oldc;
1149             return hr;
1150         }
1151
1152         DeleteObject(oldbmp);
1153
1154         if (!oldc)
1155             VirtualFree(oldsurf, 0, MEM_RELEASE);
1156     }
1157     if (flags) {
1158         WARN("Unhandled flags : %08lx\n", flags);
1159     }
1160     return hr;
1161 }
1162
1163 /* Unlock: ???, need callback */
1164 /* UpdateOverlay: generic */
1165 /* UpdateOverlayDisplay: generic */
1166 /* UpdateOverlayZOrder: generic */
1167
1168 static ICOM_VTABLE(IDirectDrawSurface7) DIB_IDirectDrawSurface7_VTable =
1169 {
1170     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
1171     Main_DirectDrawSurface_QueryInterface,
1172     Main_DirectDrawSurface_AddRef,
1173     Main_DirectDrawSurface_Release,
1174     Main_DirectDrawSurface_AddAttachedSurface,
1175     Main_DirectDrawSurface_AddOverlayDirtyRect,
1176     DIB_DirectDrawSurface_Blt,
1177     Main_DirectDrawSurface_BltBatch,
1178     DIB_DirectDrawSurface_BltFast,
1179     Main_DirectDrawSurface_DeleteAttachedSurface,
1180     Main_DirectDrawSurface_EnumAttachedSurfaces,
1181     Main_DirectDrawSurface_EnumOverlayZOrders,
1182     Main_DirectDrawSurface_Flip,
1183     Main_DirectDrawSurface_GetAttachedSurface,
1184     Main_DirectDrawSurface_GetBltStatus,
1185     Main_DirectDrawSurface_GetCaps,
1186     Main_DirectDrawSurface_GetClipper,
1187     Main_DirectDrawSurface_GetColorKey,
1188     Main_DirectDrawSurface_GetDC,
1189     Main_DirectDrawSurface_GetFlipStatus,
1190     Main_DirectDrawSurface_GetOverlayPosition,
1191     Main_DirectDrawSurface_GetPalette,
1192     Main_DirectDrawSurface_GetPixelFormat,
1193     Main_DirectDrawSurface_GetSurfaceDesc,
1194     Main_DirectDrawSurface_Initialize,
1195     Main_DirectDrawSurface_IsLost,
1196     Main_DirectDrawSurface_Lock,
1197     Main_DirectDrawSurface_ReleaseDC,
1198     DIB_DirectDrawSurface_Restore,
1199     Main_DirectDrawSurface_SetClipper,
1200     Main_DirectDrawSurface_SetColorKey,
1201     Main_DirectDrawSurface_SetOverlayPosition,
1202     Main_DirectDrawSurface_SetPalette,
1203     Main_DirectDrawSurface_Unlock,
1204     Main_DirectDrawSurface_UpdateOverlay,
1205     Main_DirectDrawSurface_UpdateOverlayDisplay,
1206     Main_DirectDrawSurface_UpdateOverlayZOrder,
1207     Main_DirectDrawSurface_GetDDInterface,
1208     Main_DirectDrawSurface_PageLock,
1209     Main_DirectDrawSurface_PageUnlock,
1210     DIB_DirectDrawSurface_SetSurfaceDesc,
1211     Main_DirectDrawSurface_SetPrivateData,
1212     Main_DirectDrawSurface_GetPrivateData,
1213     Main_DirectDrawSurface_FreePrivateData,
1214     Main_DirectDrawSurface_GetUniquenessValue,
1215     Main_DirectDrawSurface_ChangeUniquenessValue,
1216     Main_DirectDrawSurface_SetPriority,
1217     Main_DirectDrawSurface_GetPriority,
1218     Main_DirectDrawSurface_SetLOD,
1219     Main_DirectDrawSurface_GetLOD
1220 };