reactos/subsystems/win32/win32k/eng/bitblt.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS kernel
   4  * PURPOSE:          GDI BitBlt Functions
   5  * FILE:             subsys/win32k/eng/bitblt.c
   6  * PROGRAMER:        Jason Filby
   7  *                   Timo Kreuzer
   8  * REVISION HISTORY:
   9  *        2/10/1999: Created
  10  */
  11
  12 #include <win32k.h>
  13
  14 #define NDEBUG
  15 #include <debug.h>
  16
  17 typedef BOOLEAN (APIENTRY *PBLTRECTFUNC)(SURFOBJ* OutputObj,
  18                                         SURFOBJ* InputObj,
  19                                         SURFOBJ* Mask,
  20                                         XLATEOBJ* ColorTranslation,
  21                                         RECTL* OutputRect,
  22                                         POINTL* InputPoint,
  23                                         POINTL* MaskOrigin,
  24                                         BRUSHOBJ* pbo,
  25                                         POINTL* BrushOrigin,
  26                                         ROP4 Rop4);
  27
  28 static BOOLEAN APIENTRY
  29 BltMask(SURFOBJ* psoDest,
  30         SURFOBJ* psoSource, // unused
  31         SURFOBJ* psoMask,
  32         XLATEOBJ* ColorTranslation,  // unused
  33         RECTL* prclDest,
  34         POINTL* pptlSource, // unused
  35         POINTL* pptlMask,
  36         BRUSHOBJ* pbo,
  37         POINTL* pptlBrush,
  38         ROP4 Rop4)
  39 {
  40     LONG x, y;
  41     BYTE *pjMskLine, *pjMskCurrent;
  42     BYTE fjMaskBit0, fjMaskBit;
  43     /* Pattern brushes */
  44     PEBRUSHOBJ pebo = NULL;
  45     SURFOBJ *psoPattern = NULL;
  46     PSURFACE psurfPattern;
  47     ULONG PatternWidth = 0, PatternHeight = 0;
  48     LONG PatternX0 = 0, PatternX = 0, PatternY = 0;
  49     PFN_DIB_PutPixel fnDest_PutPixel = NULL;
  50     PFN_DIB_GetPixel fnPattern_GetPixel = NULL;
  51     ULONG Pattern = 0;
  52     HBITMAP hbmPattern;
  53
  54     ASSERT(psoSource == NULL);
  55     ASSERT(pptlSource == NULL);
  56
  57     if (psoMask == NULL)
  58     {
  59         return FALSE;
  60     }
  61
  62     if (pbo && pbo->iSolidColor == 0xFFFFFFFF)
  63     {
  64         pebo = CONTAINING_RECORD(pbo, EBRUSHOBJ, BrushObject);
  65
  66         hbmPattern = EBRUSHOBJ_pvGetEngBrush(pebo);
  67         psurfPattern = SURFACE_LockSurface(hbmPattern);
  68         if (psurfPattern != NULL)
  69         {
  70             psoPattern = &psurfPattern->SurfObj;
  71             PatternWidth = psoPattern->sizlBitmap.cx;
  72             PatternHeight = psoPattern->sizlBitmap.cy;
  73             fnPattern_GetPixel = DibFunctionsForBitmapFormat[psoPattern->iBitmapFormat].DIB_GetPixel;
  74         }
  75     }
  76     else
  77         psurfPattern = NULL;
  78
  79     pjMskLine = (PBYTE)psoMask->pvScan0 + pptlMask->y * psoMask->lDelta + (pptlMask->x >> 3);
  80     fjMaskBit0 = 0x80 >> (pptlMask->x & 0x07);
  81
  82     fnDest_PutPixel = DibFunctionsForBitmapFormat[psoDest->iBitmapFormat].DIB_PutPixel;
  83     if (psurfPattern)
  84     {
  85         PatternY = (prclDest->top - pptlBrush->y) % PatternHeight;
  86         if (PatternY < 0)
  87         {
  88             PatternY += PatternHeight;
  89         }
  90         PatternX0 = (prclDest->left - pptlBrush->x) % PatternWidth;
  91         if (PatternX0 < 0)
  92         {
  93             PatternX0 += PatternWidth;
  94         }
  95
  96         for (y = prclDest->top; y < prclDest->bottom; y++)
  97         {
  98             pjMskCurrent = pjMskLine;
  99             fjMaskBit = fjMaskBit0;
 100             PatternX = PatternX0;
 101
 102             for (x = prclDest->left; x < prclDest->right; x++)
 103             {
 104                 if (*pjMskCurrent & fjMaskBit)
 105                 {
 106                     fnDest_PutPixel(psoDest, x, y,
 107                         fnPattern_GetPixel(psoPattern, PatternX, PatternY));
 108                 }
 109                 fjMaskBit = _rotr8(fjMaskBit, 1);
 110                 pjMskCurrent += (fjMaskBit >> 7);
 111                 PatternX++;
 112                 PatternX %= PatternWidth;
 113             }
 114             pjMskLine += psoMask->lDelta;
 115             PatternY++;
 116             PatternY %= PatternHeight;
 117         }
 118     }
 119     else
 120     {
 121         Pattern = pbo ? pbo->iSolidColor : 0;
 122         for (y = prclDest->top; y < prclDest->bottom; y++)
 123         {
 124             pjMskCurrent = pjMskLine;
 125             fjMaskBit = fjMaskBit0;
 126
 127             for (x = prclDest->left; x < prclDest->right; x++)
 128             {
 129                 if (*pjMskCurrent & fjMaskBit)
 130                 {
 131                      fnDest_PutPixel(psoDest, x, y, Pattern);
 132                 }
 133                 fjMaskBit = _rotr8(fjMaskBit, 1);
 134                 pjMskCurrent += (fjMaskBit >> 7);
 135             }
 136             pjMskLine += psoMask->lDelta;
 137         }
 138     }
 139
 140     if (psurfPattern)
 141         SURFACE_UnlockSurface(psurfPattern);
 142
 143     return TRUE;
 144 }
 145
 146 static BOOLEAN APIENTRY
 147 BltPatCopy(SURFOBJ* Dest,
 148            SURFOBJ* Source,
 149            SURFOBJ* Mask,
 150            XLATEOBJ* ColorTranslation,
 151            RECTL* DestRect,
 152            POINTL* SourcePoint,
 153            POINTL* MaskPoint,
 154            BRUSHOBJ* pbo,
 155            POINTL* BrushPoint,
 156            ROP4 Rop4)
 157 {
 158     // These functions are assigned if we're working with a DIB
 159     // The assigned functions depend on the bitsPerPixel of the DIB
 160
 161     DibFunctionsForBitmapFormat[Dest->iBitmapFormat].DIB_ColorFill(Dest, DestRect, pbo ? pbo->iSolidColor : 0);
 162
 163     return TRUE;
 164 }
 165
 166 static BOOLEAN APIENTRY
 167 CallDibBitBlt(SURFOBJ* OutputObj,
 168               SURFOBJ* InputObj,
 169               SURFOBJ* Mask,
 170               XLATEOBJ* ColorTranslation,
 171               RECTL* OutputRect,
 172               POINTL* InputPoint,
 173               POINTL* MaskOrigin,
 174               BRUSHOBJ* pbo,
 175               POINTL* BrushOrigin,
 176               ROP4 Rop4)
 177 {
 178     BLTINFO BltInfo;
 179     PEBRUSHOBJ GdiBrush = NULL;
 180     SURFACE *psurfPattern;
 181     BOOLEAN Result;
 182     HBITMAP hbmPattern;
 183
 184     BltInfo.DestSurface = OutputObj;
 185     BltInfo.SourceSurface = InputObj;
 186     BltInfo.PatternSurface = NULL;
 187     BltInfo.XlateSourceToDest = ColorTranslation;
 188     BltInfo.DestRect = *OutputRect;
 189     BltInfo.SourcePoint = *InputPoint;
 190
 191     if (ROP3_TO_ROP4(SRCCOPY) == Rop4)
 192         return DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_BitBltSrcCopy(&BltInfo);
 193
 194     BltInfo.Brush = pbo;
 195     BltInfo.BrushOrigin = *BrushOrigin;
 196     BltInfo.Rop4 = Rop4;
 197
 198     /* Pattern brush */
 199     if (ROP4_USES_PATTERN(Rop4) && pbo && pbo->iSolidColor == 0xFFFFFFFF)
 200     {
 201         GdiBrush = CONTAINING_RECORD(pbo, EBRUSHOBJ, BrushObject);
 202         hbmPattern = EBRUSHOBJ_pvGetEngBrush(GdiBrush);
 203         psurfPattern = SURFACE_LockSurface(hbmPattern);
 204         if (psurfPattern)
 205         {
 206             BltInfo.PatternSurface = &psurfPattern->SurfObj;
 207         }
 208         else
 209         {
 210             /* FIXME - What to do here? */
 211         }
 212     }
 213     else
 214     {
 215         psurfPattern = NULL;
 216     }
 217
 218     Result = DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_BitBlt(&BltInfo);
 219
 220     /* Pattern brush */
 221     if (psurfPattern)
 222     {
 223         SURFACE_UnlockSurface(psurfPattern);
 224     }
 225
 226     return Result;
 227 }
 228
 229 INT __cdecl abs(INT nm);
 230
 231
 232 /*
 233  * @implemented
 234  */
 235 BOOL APIENTRY
 236 NtGdiEngBitBlt(
 237                 IN SURFOBJ  *psoTrg,
 238                 IN SURFOBJ  *psoSrc,
 239                 IN SURFOBJ  *psoMask,
 240                 IN CLIPOBJ  *pco,
 241                 IN XLATEOBJ  *pxlo,
 242                 IN RECTL  *prclTrg,
 243                 IN POINTL  *pptlSrc,
 244                 IN POINTL  *pptlMask,
 245                 IN BRUSHOBJ  *pbo,
 246                 IN POINTL  *pptlBrush,
 247                 IN ROP4  rop4    )
 248 {
 249     RECTL  rclTrg;
 250     POINTL ptlSrc;
 251     POINTL ptlMask;
 252     POINTL ptlBrush;
 253
 254     _SEH2_TRY
 255     {
 256         ProbeForRead(prclTrg, sizeof(RECTL), 1);
 257         RtlCopyMemory(&rclTrg,prclTrg, sizeof(RECTL));
 258
 259         ProbeForRead(pptlSrc, sizeof(POINTL), 1);
 260         RtlCopyMemory(&ptlSrc, pptlSrc, sizeof(POINTL));
 261
 262         ProbeForRead(pptlMask, sizeof(POINTL), 1);
 263         RtlCopyMemory(&ptlMask, pptlMask, sizeof(POINTL));
 264
 265         ProbeForRead(pptlBrush, sizeof(POINTL), 1);
 266         RtlCopyMemory(&ptlBrush, pptlBrush, sizeof(POINTL));
 267
 268     }
 269     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
 270     {
 271         _SEH2_YIELD(return FALSE);
 272     }
 273     _SEH2_END;
 274
 275     return  EngBitBlt(psoTrg, psoSrc, psoMask, pco, pxlo, &rclTrg, &ptlSrc, &ptlMask, pbo, &ptlBrush, rop4);
 276 }
 277
 278 /*
 279  * @implemented
 280  */
 281 BOOL APIENTRY
 282 EngBitBlt(SURFOBJ *DestObj,
 283           SURFOBJ *SourceObj,
 284           SURFOBJ *Mask,
 285           CLIPOBJ *ClipRegion,
 286           XLATEOBJ *ColorTranslation,
 287           RECTL *DestRect,
 288           POINTL *SourcePoint,
 289           POINTL *MaskOrigin,
 290           BRUSHOBJ *pbo,
 291           POINTL *BrushOrigin,
 292           ROP4 rop4)
 293 {
 294     BYTE               clippingType;
 295     RECTL              CombinedRect;
 296     RECT_ENUM          RectEnum;
 297     BOOL               EnumMore;
 298     POINTL             InputPoint;
 299     RECTL              InputRect;
 300     RECTL              OutputRect;
 301     SURFOBJ*           InputObj = 0;
 302     SURFOBJ*           OutputObj;
 303     PBLTRECTFUNC       BltRectFunc;
 304     BOOLEAN            Ret = TRUE;
 305     RECTL              ClipRect;
 306     unsigned           i;
 307     POINTL             Pt;
 308     ULONG              Direction;
 309     BOOL               UsesSource;
 310     POINTL             AdjustedBrushOrigin;
 311
 312     UsesSource = ROP4_USES_SOURCE(rop4);
 313     if (R4_NOOP == rop4)
 314     {
 315         /* Copy destination onto itself: nop */
 316         return TRUE;
 317     }
 318
 319     OutputRect = *DestRect;
 320     if (OutputRect.right < OutputRect.left)
 321     {
 322         OutputRect.left = DestRect->right;
 323         OutputRect.right = DestRect->left;
 324     }
 325     if (OutputRect.bottom < OutputRect.top)
 326     {
 327         OutputRect.left = DestRect->right;
 328         OutputRect.right = DestRect->left;
 329     }
 330
 331     if (UsesSource)
 332     {
 333         if (NULL == SourcePoint)
 334         {
 335             return FALSE;
 336         }
 337
 338         /* Make sure we don't try to copy anything outside the valid source
 339            region */
 340         InputPoint = *SourcePoint;
 341         if (InputPoint.x < 0)
 342         {
 343             OutputRect.left -= InputPoint.x;
 344             InputPoint.x = 0;
 345         }
 346         if (InputPoint.y < 0)
 347         {
 348             OutputRect.top -= InputPoint.y;
 349             InputPoint.y = 0;
 350         }
 351         if (SourceObj->sizlBitmap.cx < InputPoint.x +
 352                 OutputRect.right - OutputRect.left)
 353         {
 354             OutputRect.right = OutputRect.left +
 355                                SourceObj->sizlBitmap.cx - InputPoint.x;
 356         }
 357         if (SourceObj->sizlBitmap.cy < InputPoint.y +
 358                 OutputRect.bottom - OutputRect.top)
 359         {
 360             OutputRect.bottom = OutputRect.top +
 361                                 SourceObj->sizlBitmap.cy - InputPoint.y;
 362         }
 363
 364         InputRect.left = InputPoint.x;
 365         InputRect.right = InputPoint.x + (OutputRect.right - OutputRect.left);
 366         InputRect.top = InputPoint.y;
 367         InputRect.bottom = InputPoint.y + (OutputRect.bottom - OutputRect.top);
 368
 369         InputObj = SourceObj;
 370     }
 371     else
 372     {
 373         InputPoint.x = InputPoint.y = 0;
 374         InputRect.left = 0;
 375         InputRect.right = DestRect->right - DestRect->left;
 376         InputRect.top = 0;
 377         InputRect.bottom = DestRect->bottom - DestRect->top;
 378     }
 379
 380     if (NULL != ClipRegion)
 381     {
 382         if (OutputRect.left < ClipRegion->rclBounds.left)
 383         {
 384             InputRect.left += ClipRegion->rclBounds.left - OutputRect.left;
 385             InputPoint.x += ClipRegion->rclBounds.left - OutputRect.left;
 386             OutputRect.left = ClipRegion->rclBounds.left;
 387         }
 388         if (ClipRegion->rclBounds.right < OutputRect.right)
 389         {
 390             InputRect.right -=  OutputRect.right - ClipRegion->rclBounds.right;
 391             OutputRect.right = ClipRegion->rclBounds.right;
 392         }
 393         if (OutputRect.top < ClipRegion->rclBounds.top)
 394         {
 395             InputRect.top += ClipRegion->rclBounds.top - OutputRect.top;
 396             InputPoint.y += ClipRegion->rclBounds.top - OutputRect.top;
 397             OutputRect.top = ClipRegion->rclBounds.top;
 398         }
 399         if (ClipRegion->rclBounds.bottom < OutputRect.bottom)
 400         {
 401             InputRect.bottom -=  OutputRect.bottom - ClipRegion->rclBounds.bottom;
 402             OutputRect.bottom = ClipRegion->rclBounds.bottom;
 403         }
 404     }
 405
 406     /* Check for degenerate case: if height or width of OutputRect is 0 pixels
 407        there's nothing to do */
 408     if (OutputRect.right <= OutputRect.left ||
 409             OutputRect.bottom <= OutputRect.top)
 410     {
 411         return TRUE;
 412     }
 413
 414     OutputObj = DestObj;
 415
 416     if (BrushOrigin)
 417     {
 418         AdjustedBrushOrigin.x = BrushOrigin->x;
 419         AdjustedBrushOrigin.y = BrushOrigin->y;
 420     }
 421     else
 422     {
 423         AdjustedBrushOrigin.x = 0;
 424         AdjustedBrushOrigin.y = 0;
 425     }
 426
 427     /* Determine clipping type */
 428     if (ClipRegion == (CLIPOBJ *) NULL)
 429     {
 430         clippingType = DC_TRIVIAL;
 431     }
 432     else
 433     {
 434         clippingType = ClipRegion->iDComplexity;
 435     }
 436
 437     if (R4_MASK == rop4)
 438     {
 439         BltRectFunc = BltMask;
 440     }
 441     else if (ROP3_TO_ROP4(PATCOPY) == rop4)
 442     {
 443         if (pbo && pbo->iSolidColor == 0xFFFFFFFF)
 444             BltRectFunc = CallDibBitBlt;
 445         else
 446             BltRectFunc = BltPatCopy;
 447     }
 448     else
 449     {
 450         BltRectFunc = CallDibBitBlt;
 451     }
 452
 453
 454     switch (clippingType)
 455     {
 456         case DC_TRIVIAL:
 457             Ret = (*BltRectFunc)(OutputObj, InputObj, Mask, ColorTranslation,
 458                                  &OutputRect, &InputPoint, MaskOrigin, pbo,
 459                                  &AdjustedBrushOrigin, rop4);
 460             break;
 461         case DC_RECT:
 462             /* Clip the blt to the clip rectangle */
 463             ClipRect.left = ClipRegion->rclBounds.left;
 464             ClipRect.right = ClipRegion->rclBounds.right;
 465             ClipRect.top = ClipRegion->rclBounds.top;
 466             ClipRect.bottom = ClipRegion->rclBounds.bottom;
 467             if (RECTL_bIntersectRect(&CombinedRect, &OutputRect, &ClipRect))
 468             {
 469                 Pt.x = InputPoint.x + CombinedRect.left - OutputRect.left;
 470                 Pt.y = InputPoint.y + CombinedRect.top - OutputRect.top;
 471                 Ret = (*BltRectFunc)(OutputObj, InputObj, Mask, ColorTranslation,
 472                                      &CombinedRect, &Pt, MaskOrigin, pbo,
 473                                      &AdjustedBrushOrigin, rop4);
 474             }
 475             break;
 476         case DC_COMPLEX:
 477             Ret = TRUE;
 478             if (OutputObj == InputObj)
 479             {
 480                 if (OutputRect.top < InputPoint.y)
 481                 {
 482                     Direction = OutputRect.left < InputPoint.x ?
 483                                 CD_RIGHTDOWN : CD_LEFTDOWN;
 484                 }
 485                 else
 486                 {
 487                     Direction = OutputRect.left < InputPoint.x ?
 488                                 CD_RIGHTUP : CD_LEFTUP;
 489                 }
 490             }
 491             else
 492             {
 493                 Direction = CD_ANY;
 494             }
 495             CLIPOBJ_cEnumStart(ClipRegion, FALSE, CT_RECTANGLES, Direction, 0);
 496             do
 497             {
 498                 EnumMore = CLIPOBJ_bEnum(ClipRegion,(ULONG) sizeof(RectEnum),
 499                                          (PVOID) &RectEnum);
 500
 501                 for (i = 0; i < RectEnum.c; i++)
 502                 {
 503                     ClipRect.left = RectEnum.arcl[i].left;
 504                     ClipRect.right = RectEnum.arcl[i].right;
 505                     ClipRect.top = RectEnum.arcl[i].top;
 506                     ClipRect.bottom = RectEnum.arcl[i].bottom;
 507                     if (RECTL_bIntersectRect(&CombinedRect, &OutputRect, &ClipRect))
 508                     {
 509                         Pt.x = InputPoint.x + CombinedRect.left - OutputRect.left;
 510                         Pt.y = InputPoint.y + CombinedRect.top - OutputRect.top;
 511                         Ret = (*BltRectFunc)(OutputObj, InputObj, Mask,
 512                                              ColorTranslation, &CombinedRect, &Pt,
 513                                              MaskOrigin, pbo, &AdjustedBrushOrigin,
 514                                              rop4) && Ret;
 515                     }
 516                 }
 517             }
 518             while (EnumMore);
 519             break;
 520     }
 521
 522     return Ret;
 523 }
 524
 525 BOOL APIENTRY
 526 IntEngBitBlt(
 527     SURFOBJ *psoTrg,
 528     SURFOBJ *psoSrc,
 529     SURFOBJ *psoMask,
 530     CLIPOBJ *pco,
 531     XLATEOBJ *pxlo,
 532     RECTL *prclTrg,
 533     POINTL *pptlSrc,
 534     POINTL *pptlMask,
 535     BRUSHOBJ *pbo,
 536     POINTL *pptlBrush,
 537     ROP4 rop4)
 538 {
 539     SURFACE *psurfTrg;
 540     SURFACE *psurfSrc = NULL;
 541     BOOL bResult;
 542     RECTL rclClipped;
 543     RECTL rclSrc;
 544     PFN_DrvBitBlt pfnBitBlt;
 545
 546     ASSERT(psoTrg);
 547     psurfTrg = CONTAINING_RECORD(psoTrg, SURFACE, SurfObj);
 548
 549     /* FIXME: Should we really allow to pass non-well-ordered rects? */
 550     rclClipped = *prclTrg;
 551     RECTL_vMakeWellOrdered(&rclClipped);
 552
 553     if (pco)
 554     {
 555         /* Clip target rect against the bounds of the clipping region */
 556         if (!RECTL_bIntersectRect(&rclClipped, &rclClipped, &pco->rclBounds))
 557         {
 558             /* Nothing left */
 559             return TRUE;
 560         }
 561
 562         /* Don't pass a clipobj with only a single rect */
 563         if (pco->iDComplexity == DC_RECT)
 564             pco = NULL;
 565     }
 566
 567     if (ROP4_USES_SOURCE(rop4))
 568     {
 569         ASSERT(psoSrc);
 570         psurfSrc = CONTAINING_RECORD(psoSrc, SURFACE, SurfObj);
 571
 572         /* Calculate source rect */
 573         rclSrc.left = pptlSrc->x + rclClipped.left - prclTrg->left;
 574         rclSrc.top = pptlSrc->y + rclClipped.top - prclTrg->top;
 575         rclSrc.right = rclSrc.left + rclClipped.right - rclClipped.left;
 576         rclSrc.bottom = rclSrc.top + rclClipped.bottom - rclClipped.top;
 577     }
 578     else
 579     {
 580         psoSrc = NULL;
 581         psurfSrc = NULL;
 582     }
 583
 584     /* Is the target surface device managed? */
 585     if (psurfTrg->flags & HOOK_BITBLT)
 586     {
 587         /* Is the source a different device managed surface? */
 588         if (psoSrc && psoSrc->hdev != psoTrg->hdev && psurfSrc->flags & HOOK_BITBLT)
 589         {
 590             DPRINT1("Need to copy to standard bitmap format!\n");
 591             ASSERT(FALSE);
 592         }
 593
 594         pfnBitBlt = GDIDEVFUNCS(psoTrg).BitBlt;
 595     }
 596
 597     /* Is the source surface device managed? */
 598     else if (psoSrc && psurfSrc->flags & HOOK_BITBLT)
 599     {
 600         pfnBitBlt = GDIDEVFUNCS(psoSrc).BitBlt;
 601     }
 602     else
 603     {
 604         pfnBitBlt = EngBitBlt;
 605     }
 606
 607     bResult = pfnBitBlt(psoTrg,
 608                         psoSrc,
 609                         psoMask,
 610                         pco,
 611                         pxlo,
 612                         &rclClipped,
 613                         (POINTL*)&rclSrc,
 614                         pptlMask,
 615                         pbo,
 616                         pptlBrush,
 617                         rop4);
 618
 619     // FIXME: cleanup temp surface!
 620
 621     return bResult;
 622 }
 623
 624
 625 /**** REACTOS FONT RENDERING CODE *********************************************/
 626
 627 /* renders the alpha mask bitmap */
 628 static BOOLEAN APIENTRY
 629 AlphaBltMask(SURFOBJ* psoDest,
 630              SURFOBJ* psoSource, // unused
 631              SURFOBJ* psoMask,
 632              XLATEOBJ* pxloRGB2Dest,
 633              XLATEOBJ* pxloBrush,
 634              RECTL* prclDest,
 635              POINTL* pptlSource, // unused
 636              POINTL* pptlMask,
 637              BRUSHOBJ* pbo,
 638              POINTL* pptlBrush)
 639 {
 640     LONG i, j, dx, dy;
 641     int r, g, b;
 642     ULONG Background, BrushColor, NewColor;
 643     BYTE *tMask, *lMask;
 644
 645     ASSERT(psoSource == NULL);
 646     ASSERT(pptlSource == NULL);
 647
 648     dx = prclDest->right  - prclDest->left;
 649     dy = prclDest->bottom - prclDest->top;
 650
 651     if (psoMask != NULL)
 652     {
 653         BrushColor = XLATEOBJ_iXlate(pxloBrush, pbo ? pbo->iSolidColor : 0);
 654         r = (int)GetRValue(BrushColor);
 655         g = (int)GetGValue(BrushColor);
 656         b = (int)GetBValue(BrushColor);
 657
 658         tMask = (PBYTE)psoMask->pvScan0 + (pptlMask->y * psoMask->lDelta) + pptlMask->x;
 659         for (j = 0; j < dy; j++)
 660         {
 661             lMask = tMask;
 662             for (i = 0; i < dx; i++)
 663             {
 664                 if (*lMask > 0)
 665                 {
 666                     if (*lMask == 0xff)
 667                     {
 668                         DibFunctionsForBitmapFormat[psoDest->iBitmapFormat].DIB_PutPixel(
 669                             psoDest, prclDest->left + i, prclDest->top + j, pbo ? pbo->iSolidColor : 0);
 670                     }
 671                     else
 672                     {
 673                         Background = DIB_GetSource(psoDest, prclDest->left + i, prclDest->top + j,
 674                                                    pxloBrush);
 675
 676                         NewColor =
 677                             RGB((*lMask * (r - GetRValue(Background)) >> 8) + GetRValue(Background),
 678                                 (*lMask * (g - GetGValue(Background)) >> 8) + GetGValue(Background),
 679                                 (*lMask * (b - GetBValue(Background)) >> 8) + GetBValue(Background));
 680
 681                         Background = XLATEOBJ_iXlate(pxloRGB2Dest, NewColor);
 682                         DibFunctionsForBitmapFormat[psoDest->iBitmapFormat].DIB_PutPixel(
 683                             psoDest, prclDest->left + i, prclDest->top + j, Background);
 684                     }
 685                 }
 686                 lMask++;
 687             }
 688             tMask += psoMask->lDelta;
 689         }
 690         return TRUE;
 691     }
 692     else
 693     {
 694         return FALSE;
 695     }
 696 }
 697
 698 static
 699 BOOL APIENTRY
 700 EngMaskBitBlt(SURFOBJ *psoDest,
 701               SURFOBJ *psoMask,
 702               CLIPOBJ *ClipRegion,
 703               XLATEOBJ *DestColorTranslation,
 704               XLATEOBJ *SourceColorTranslation,
 705               RECTL *DestRect,
 706               POINTL *pptlMask,
 707               BRUSHOBJ *pbo,
 708               POINTL *BrushOrigin)
 709 {
 710     BYTE               clippingType;
 711     RECTL              CombinedRect;
 712     RECT_ENUM          RectEnum;
 713     BOOL               EnumMore;
 714     POINTL             InputPoint;
 715     RECTL              InputRect;
 716     RECTL              OutputRect;
 717     POINTL             Translate;
 718     INTENG_ENTER_LEAVE EnterLeaveSource;
 719     INTENG_ENTER_LEAVE EnterLeaveDest;
 720     SURFOBJ*           psoInput;
 721     SURFOBJ*           psoOutput;
 722     BOOLEAN            Ret = TRUE;
 723     RECTL              ClipRect;
 724     unsigned           i;
 725     POINTL             Pt;
 726     ULONG              Direction;
 727     POINTL             AdjustedBrushOrigin;
 728
 729     ASSERT(psoMask);
 730
 731     if (pptlMask)
 732     {
 733         InputRect.left = pptlMask->x;
 734         InputRect.right = pptlMask->x + (DestRect->right - DestRect->left);
 735         InputRect.top = pptlMask->y;
 736         InputRect.bottom = pptlMask->y + (DestRect->bottom - DestRect->top);
 737     }
 738     else
 739     {
 740         InputRect.left = 0;
 741         InputRect.right = DestRect->right - DestRect->left;
 742         InputRect.top = 0;
 743         InputRect.bottom = DestRect->bottom - DestRect->top;
 744     }
 745
 746     OutputRect = *DestRect;
 747     if (NULL != ClipRegion)
 748     {
 749         if (OutputRect.left < ClipRegion->rclBounds.left)
 750         {
 751             InputRect.left += ClipRegion->rclBounds.left - OutputRect.left;
 752             OutputRect.left = ClipRegion->rclBounds.left;
 753         }
 754         if (ClipRegion->rclBounds.right < OutputRect.right)
 755         {
 756             InputRect.right -=  OutputRect.right - ClipRegion->rclBounds.right;
 757             OutputRect.right = ClipRegion->rclBounds.right;
 758         }
 759         if (OutputRect.top < ClipRegion->rclBounds.top)
 760         {
 761             InputRect.top += ClipRegion->rclBounds.top - OutputRect.top;
 762             OutputRect.top = ClipRegion->rclBounds.top;
 763         }
 764         if (ClipRegion->rclBounds.bottom < OutputRect.bottom)
 765         {
 766             InputRect.bottom -=  OutputRect.bottom - ClipRegion->rclBounds.bottom;
 767             OutputRect.bottom = ClipRegion->rclBounds.bottom;
 768         }
 769     }
 770
 771     if (! IntEngEnter(&EnterLeaveSource, psoMask, &InputRect, TRUE, &Translate, &psoInput))
 772     {
 773         return FALSE;
 774     }
 775
 776     InputPoint.x = InputRect.left + Translate.x;
 777     InputPoint.y = InputRect.top + Translate.y;
 778
 779     /* Check for degenerate case: if height or width of OutputRect is 0 pixels there's
 780        nothing to do */
 781     if (OutputRect.right <= OutputRect.left || OutputRect.bottom <= OutputRect.top)
 782     {
 783         IntEngLeave(&EnterLeaveSource);
 784         return TRUE;
 785     }
 786
 787     if (! IntEngEnter(&EnterLeaveDest, psoDest, &OutputRect, FALSE, &Translate, &psoOutput))
 788     {
 789         IntEngLeave(&EnterLeaveSource);
 790         return FALSE;
 791     }
 792
 793     OutputRect.left = DestRect->left + Translate.x;
 794     OutputRect.right = DestRect->right + Translate.x;
 795     OutputRect.top = DestRect->top + Translate.y;
 796     OutputRect.bottom = DestRect->bottom + Translate.y;
 797
 798     if (BrushOrigin)
 799     {
 800         AdjustedBrushOrigin.x = BrushOrigin->x + Translate.x;
 801         AdjustedBrushOrigin.y = BrushOrigin->y + Translate.y;
 802     }
 803     else
 804         AdjustedBrushOrigin = Translate;
 805
 806     // Determine clipping type
 807     if (ClipRegion == (CLIPOBJ *) NULL)
 808     {
 809         clippingType = DC_TRIVIAL;
 810     } else {
 811         clippingType = ClipRegion->iDComplexity;
 812     }
 813
 814     switch (clippingType)
 815     {
 816         case DC_TRIVIAL:
 817             if (psoMask->iBitmapFormat == BMF_8BPP)
 818                 Ret = AlphaBltMask(psoOutput, NULL , psoInput, DestColorTranslation, SourceColorTranslation,
 819                                    &OutputRect, NULL, &InputPoint, pbo, &AdjustedBrushOrigin);
 820             else
 821                 Ret = BltMask(psoOutput, NULL, psoInput, DestColorTranslation,
 822                               &OutputRect, NULL, &InputPoint, pbo, &AdjustedBrushOrigin,
 823                               R4_MASK);
 824             break;
 825         case DC_RECT:
 826             // Clip the blt to the clip rectangle
 827             ClipRect.left = ClipRegion->rclBounds.left + Translate.x;
 828             ClipRect.right = ClipRegion->rclBounds.right + Translate.x;
 829             ClipRect.top = ClipRegion->rclBounds.top + Translate.y;
 830             ClipRect.bottom = ClipRegion->rclBounds.bottom + Translate.y;
 831             if (RECTL_bIntersectRect(&CombinedRect, &OutputRect, &ClipRect))
 832             {
 833                 Pt.x = InputPoint.x + CombinedRect.left - OutputRect.left;
 834                 Pt.y = InputPoint.y + CombinedRect.top - OutputRect.top;
 835                 if (psoMask->iBitmapFormat == BMF_8BPP)
 836                 {
 837                     Ret = AlphaBltMask(psoOutput, NULL, psoInput, DestColorTranslation, SourceColorTranslation,
 838                                        &CombinedRect, NULL, &Pt, pbo, &AdjustedBrushOrigin);
 839                 }
 840                 else
 841                 {
 842                     Ret = BltMask(psoOutput, NULL, psoInput, DestColorTranslation,
 843                                   &CombinedRect, NULL, &Pt, pbo, &AdjustedBrushOrigin, R4_MASK);
 844                 }
 845             }
 846             break;
 847         case DC_COMPLEX:
 848             Ret = TRUE;
 849             if (psoOutput == psoInput)
 850             {
 851                 if (OutputRect.top < InputPoint.y)
 852                 {
 853                     Direction = OutputRect.left < InputPoint.x ? CD_RIGHTDOWN : CD_LEFTDOWN;
 854                 }
 855                 else
 856                 {
 857                     Direction = OutputRect.left < InputPoint.x ? CD_RIGHTUP : CD_LEFTUP;
 858                 }
 859             }
 860             else
 861             {
 862                 Direction = CD_ANY;
 863             }
 864             CLIPOBJ_cEnumStart(ClipRegion, FALSE, CT_RECTANGLES, Direction, 0);
 865             do
 866             {
 867                 EnumMore = CLIPOBJ_bEnum(ClipRegion,(ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
 868
 869                 for (i = 0; i < RectEnum.c; i++)
 870                 {
 871                     ClipRect.left = RectEnum.arcl[i].left + Translate.x;
 872                     ClipRect.right = RectEnum.arcl[i].right + Translate.x;
 873                     ClipRect.top = RectEnum.arcl[i].top + Translate.y;
 874                     ClipRect.bottom = RectEnum.arcl[i].bottom + Translate.y;
 875                     if (RECTL_bIntersectRect(&CombinedRect, &OutputRect, &ClipRect))
 876                     {
 877                         Pt.x = InputPoint.x + CombinedRect.left - OutputRect.left;
 878                         Pt.y = InputPoint.y + CombinedRect.top - OutputRect.top;
 879                         if (psoMask->iBitmapFormat == BMF_8BPP)
 880                         {
 881                             Ret = AlphaBltMask(psoOutput, NULL, psoInput,
 882                                                DestColorTranslation,
 883                                                SourceColorTranslation,
 884                                                &CombinedRect, NULL, &Pt, pbo,
 885                                                &AdjustedBrushOrigin) && Ret;
 886                         }
 887                         else
 888                         {
 889                             Ret = BltMask(psoOutput, NULL, psoInput,
 890                                           DestColorTranslation, &CombinedRect, NULL,
 891                                           &Pt, pbo, &AdjustedBrushOrigin,
 892                                           R4_MASK) && Ret;
 893                         }
 894                     }
 895                 }
 896             }
 897             while (EnumMore);
 898             break;
 899     }
 900
 901
 902     IntEngLeave(&EnterLeaveDest);
 903     IntEngLeave(&EnterLeaveSource);
 904
 905     return Ret;
 906 }
 907
 908 BOOL APIENTRY
 909 IntEngMaskBlt(SURFOBJ *psoDest,
 910               SURFOBJ *psoMask,
 911               CLIPOBJ *ClipRegion,
 912               XLATEOBJ *DestColorTranslation,
 913               XLATEOBJ *SourceColorTranslation,
 914               RECTL *DestRect,
 915               POINTL *pptlMask,
 916               BRUSHOBJ *pbo,
 917               POINTL *BrushOrigin)
 918 {
 919     BOOLEAN ret;
 920     RECTL OutputRect;
 921     POINTL InputPoint;
 922     SURFACE *psurfDest;
 923
 924     ASSERT(psoMask);
 925
 926     if (pptlMask)
 927     {
 928         InputPoint = *pptlMask;
 929     }
 930
 931     /* Clip against the bounds of the clipping region so we won't try to write
 932      * outside the surface */
 933     if (NULL != ClipRegion)
 934     {
 935         if (!RECTL_bIntersectRect(&OutputRect, DestRect, &ClipRegion->rclBounds))
 936         {
 937             return TRUE;
 938         }
 939         InputPoint.x += OutputRect.left - DestRect->left;
 940         InputPoint.y += OutputRect.top - DestRect->top;
 941     }
 942     else
 943     {
 944         OutputRect = *DestRect;
 945     }
 946
 947     /* No success yet */
 948     ret = FALSE;
 949     ASSERT(psoDest);
 950     psurfDest = CONTAINING_RECORD(psoDest, SURFACE, SurfObj);
 951
 952     /* Dummy BitBlt to let driver know that it should flush its changes.
 953        This should really be done using a call to DrvSynchronizeSurface,
 954        but the VMware driver doesn't hook that call. */
 955     IntEngBitBlt(psoDest, NULL, psoMask, ClipRegion, DestColorTranslation,
 956                    DestRect, pptlMask, pptlMask, pbo, BrushOrigin,
 957                    R4_NOOP);
 958
 959     ret = EngMaskBitBlt(psoDest, psoMask, ClipRegion, DestColorTranslation, SourceColorTranslation,
 960                         &OutputRect, &InputPoint, pbo, BrushOrigin);
 961
 962     /* Dummy BitBlt to let driver know that something has changed. */
 963     IntEngBitBlt(psoDest, NULL, psoMask, ClipRegion, DestColorTranslation,
 964                    DestRect, pptlMask, pptlMask, pbo, BrushOrigin,
 965                    R4_NOOP);
 966
 967     return ret;
 968 }
 969
 970 /* EOF */