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 <w32k.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     if (psoMask == NULL)
  55     {
  56         return FALSE;
  57     }
  58
  59     if (pbo && pbo->iSolidColor == 0xFFFFFFFF)
  60     {
  61         pebo = CONTAINING_RECORD(pbo, EBRUSHOBJ, BrushObject);
  62
  63         hbmPattern = EBRUSHOBJ_pvGetEngBrush(pebo);
  64         psurfPattern = SURFACE_LockSurface(hbmPattern);
  65         if (psurfPattern != NULL)
  66         {
  67             psoPattern = &psurfPattern->SurfObj;
  68             PatternWidth = psoPattern->sizlBitmap.cx;
  69             PatternHeight = psoPattern->sizlBitmap.cy;
  70             fnPattern_GetPixel = DibFunctionsForBitmapFormat[psoPattern->iBitmapFormat].DIB_GetPixel;
  71         }
  72     }
  73     else
  74         psurfPattern = NULL;
  75
  76     pjMskLine = (PBYTE)psoMask->pvScan0 + pptlMask->y * psoMask->lDelta + (pptlMask->x >> 3);
  77     fjMaskBit0 = 0x80 >> (pptlMask->x & 0x07);
  78
  79     fnDest_PutPixel = DibFunctionsForBitmapFormat[psoDest->iBitmapFormat].DIB_PutPixel;
  80     if (psurfPattern)
  81     {
  82         PatternY = (prclDest->top - pptlBrush->y) % PatternHeight;
  83         if (PatternY < 0)
  84         {
  85             PatternY += PatternHeight;
  86         }
  87         PatternX0 = (prclDest->left - pptlBrush->x) % PatternWidth;
  88         if (PatternX0 < 0)
  89         {
  90             PatternX0 += PatternWidth;
  91         }
  92
  93         for (y = prclDest->top; y < prclDest->bottom; y++)
  94         {
  95             pjMskCurrent = pjMskLine;
  96             fjMaskBit = fjMaskBit0;
  97             PatternX = PatternX0;
  98
  99             for (x = prclDest->left; x < prclDest->right; x++)
 100             {
 101                 if (*pjMskCurrent & fjMaskBit)
 102                 {
 103                     fnDest_PutPixel(psoDest, x, y,
 104                         fnPattern_GetPixel(psoPattern, PatternX, PatternY));
 105                 }
 106                 fjMaskBit = _rotr8(fjMaskBit, 1);
 107                 pjMskCurrent += (fjMaskBit >> 7);
 108                 PatternX++;
 109                 PatternX %= PatternWidth;
 110             }
 111             pjMskLine += psoMask->lDelta;
 112             PatternY++;
 113             PatternY %= PatternHeight;
 114         }
 115     }
 116     else
 117     {
 118         Pattern = pbo ? pbo->iSolidColor : 0;
 119         for (y = prclDest->top; y < prclDest->bottom; y++)
 120         {
 121             pjMskCurrent = pjMskLine;
 122             fjMaskBit = fjMaskBit0;
 123
 124             for (x = prclDest->left; x < prclDest->right; x++)
 125             {
 126                 if (*pjMskCurrent & fjMaskBit)
 127                 {
 128                      fnDest_PutPixel(psoDest, x, y, Pattern);
 129                 }
 130                 fjMaskBit = _rotr8(fjMaskBit, 1);
 131                 pjMskCurrent += (fjMaskBit >> 7);
 132             }
 133             pjMskLine += psoMask->lDelta;
 134         }
 135     }
 136
 137     if (psurfPattern)
 138         SURFACE_UnlockSurface(psurfPattern);
 139
 140     return TRUE;
 141 }
 142
 143 static BOOLEAN APIENTRY
 144 BltPatCopy(SURFOBJ* Dest,
 145            SURFOBJ* Source,
 146            SURFOBJ* Mask,
 147            XLATEOBJ* ColorTranslation,
 148            RECTL* DestRect,
 149            POINTL* SourcePoint,
 150            POINTL* MaskPoint,
 151            BRUSHOBJ* pbo,
 152            POINTL* BrushPoint,
 153            ROP4 Rop4)
 154 {
 155     // These functions are assigned if we're working with a DIB
 156     // The assigned functions depend on the bitsPerPixel of the DIB
 157
 158     DibFunctionsForBitmapFormat[Dest->iBitmapFormat].DIB_ColorFill(Dest, DestRect, pbo ? pbo->iSolidColor : 0);
 159
 160     return TRUE;
 161 }
 162
 163 static BOOLEAN APIENTRY
 164 CallDibBitBlt(SURFOBJ* OutputObj,
 165               SURFOBJ* InputObj,
 166               SURFOBJ* Mask,
 167               XLATEOBJ* ColorTranslation,
 168               RECTL* OutputRect,
 169               POINTL* InputPoint,
 170               POINTL* MaskOrigin,
 171               BRUSHOBJ* pbo,
 172               POINTL* BrushOrigin,
 173               ROP4 Rop4)
 174 {
 175     BLTINFO BltInfo;
 176     PEBRUSHOBJ GdiBrush = NULL;
 177     SURFACE *psurfPattern;
 178     BOOLEAN Result;
 179     HBITMAP hbmPattern;
 180
 181     BltInfo.DestSurface = OutputObj;
 182     BltInfo.SourceSurface = InputObj;
 183     BltInfo.PatternSurface = NULL;
 184     BltInfo.XlateSourceToDest = ColorTranslation;
 185     BltInfo.DestRect = *OutputRect;
 186     BltInfo.SourcePoint = *InputPoint;
 187
 188     if (ROP3_TO_ROP4(SRCCOPY) == Rop4)
 189         return DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_BitBltSrcCopy(&BltInfo);
 190
 191     BltInfo.Brush = pbo;
 192     BltInfo.BrushOrigin = *BrushOrigin;
 193     BltInfo.Rop4 = Rop4;
 194
 195     /* Pattern brush */
 196     if (ROP4_USES_PATTERN(Rop4) && pbo && pbo->iSolidColor == 0xFFFFFFFF)
 197     {
 198         GdiBrush = CONTAINING_RECORD(pbo, EBRUSHOBJ, BrushObject);
 199         hbmPattern = EBRUSHOBJ_pvGetEngBrush(GdiBrush);
 200         psurfPattern = SURFACE_LockSurface(hbmPattern);
 201         if (psurfPattern)
 202         {
 203             BltInfo.PatternSurface = &psurfPattern->SurfObj;
 204         }
 205         else
 206         {
 207             /* FIXME - What to do here? */
 208         }
 209     }
 210     else
 211     {
 212         psurfPattern = NULL;
 213     }
 214
 215     Result = DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_BitBlt(&BltInfo);
 216
 217     /* Pattern brush */
 218     if (psurfPattern)
 219     {
 220         SURFACE_UnlockSurface(psurfPattern);
 221     }
 222
 223     return Result;
 224 }
 225
 226 INT __cdecl abs(INT nm);
 227
 228
 229 /*
 230  * @implemented
 231  */
 232 BOOL APIENTRY
 233 NtGdiEngBitBlt(
 234                 IN SURFOBJ  *psoTrg,
 235                 IN SURFOBJ  *psoSrc,
 236                 IN SURFOBJ  *psoMask,
 237                 IN CLIPOBJ  *pco,
 238                 IN XLATEOBJ  *pxlo,
 239                 IN RECTL  *prclTrg,
 240                 IN POINTL  *pptlSrc,
 241                 IN POINTL  *pptlMask,
 242                 IN BRUSHOBJ  *pbo,
 243                 IN POINTL  *pptlBrush,
 244                 IN ROP4  rop4    )
 245 {
 246     RECTL  rclTrg;
 247     POINTL ptlSrc;
 248     POINTL ptlMask;
 249     POINTL ptlBrush;
 250
 251     _SEH2_TRY
 252     {
 253         ProbeForRead(prclTrg, sizeof(RECTL), 1);
 254         RtlCopyMemory(&rclTrg,prclTrg, sizeof(RECTL));
 255
 256         ProbeForRead(pptlSrc, sizeof(POINTL), 1);
 257         RtlCopyMemory(&ptlSrc, pptlSrc, sizeof(POINTL));
 258
 259         ProbeForRead(pptlMask, sizeof(POINTL), 1);
 260         RtlCopyMemory(&ptlMask, pptlMask, sizeof(POINTL));
 261
 262         ProbeForRead(pptlBrush, sizeof(POINTL), 1);
 263         RtlCopyMemory(&ptlBrush, pptlBrush, sizeof(POINTL));
 264
 265     }
 266     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
 267     {
 268         _SEH2_YIELD(return FALSE);
 269     }
 270     _SEH2_END;
 271
 272     return  EngBitBlt(psoTrg, psoSrc, psoMask, pco, pxlo, &rclTrg, &ptlSrc, &ptlMask, pbo, &ptlBrush, rop4);
 273 }
 274
 275 /*
 276  * @implemented
 277  */
 278 BOOL APIENTRY
 279 EngBitBlt(SURFOBJ *DestObj,
 280           SURFOBJ *SourceObj,
 281           SURFOBJ *Mask,
 282           CLIPOBJ *ClipRegion,
 283           XLATEOBJ *ColorTranslation,
 284           RECTL *DestRect,
 285           POINTL *SourcePoint,
 286           POINTL *MaskOrigin,
 287           BRUSHOBJ *pbo,
 288           POINTL *BrushOrigin,
 289           ROP4 rop4)
 290 {
 291     BYTE               clippingType;
 292     RECTL              CombinedRect;
 293     RECT_ENUM          RectEnum;
 294     BOOL               EnumMore;
 295     POINTL             InputPoint;
 296     RECTL              InputRect;
 297     RECTL              OutputRect;
 298     SURFOBJ*           InputObj = 0;
 299     SURFOBJ*           OutputObj;
 300     PBLTRECTFUNC       BltRectFunc;
 301     BOOLEAN            Ret = TRUE;
 302     RECTL              ClipRect;
 303     unsigned           i;
 304     POINTL             Pt;
 305     ULONG              Direction;
 306     BOOL               UsesSource;
 307     BOOL               UsesPattern;
 308     POINTL             AdjustedBrushOrigin;
 309
 310     UsesSource = ROP4_USES_SOURCE(rop4);
 311     UsesPattern = ROP4_USES_PATTERN(rop4);
 312     if (R4_NOOP == rop4)
 313     {
 314         /* Copy destination onto itself: nop */
 315         return TRUE;
 316     }
 317
 318     OutputRect = *DestRect;
 319     if (OutputRect.right < OutputRect.left)
 320     {
 321         OutputRect.left = DestRect->right;
 322         OutputRect.right = DestRect->left;
 323     }
 324     if (OutputRect.bottom < OutputRect.top)
 325     {
 326         OutputRect.left = DestRect->right;
 327         OutputRect.right = DestRect->left;
 328     }
 329
 330     if (UsesSource)
 331     {
 332         if (NULL == SourcePoint)
 333         {
 334             return FALSE;
 335         }
 336
 337         /* Make sure we don't try to copy anything outside the valid source
 338            region */
 339         InputPoint = *SourcePoint;
 340         if (InputPoint.x < 0)
 341         {
 342             OutputRect.left -= InputPoint.x;
 343             InputPoint.x = 0;
 344         }
 345         if (InputPoint.y < 0)
 346         {
 347             OutputRect.top -= InputPoint.y;
 348             InputPoint.y = 0;
 349         }
 350         if (SourceObj->sizlBitmap.cx < InputPoint.x +
 351                 OutputRect.right - OutputRect.left)
 352         {
 353             OutputRect.right = OutputRect.left +
 354                                SourceObj->sizlBitmap.cx - InputPoint.x;
 355         }
 356         if (SourceObj->sizlBitmap.cy < InputPoint.y +
 357                 OutputRect.bottom - OutputRect.top)
 358         {
 359             OutputRect.bottom = OutputRect.top +
 360                                 SourceObj->sizlBitmap.cy - InputPoint.y;
 361         }
 362
 363         InputRect.left = InputPoint.x;
 364         InputRect.right = InputPoint.x + (OutputRect.right - OutputRect.left);
 365         InputRect.top = InputPoint.y;
 366         InputRect.bottom = InputPoint.y + (OutputRect.bottom - OutputRect.top);
 367
 368         InputObj = SourceObj;
 369     }
 370     else
 371     {
 372         InputRect.left = 0;
 373         InputRect.right = DestRect->right - DestRect->left;
 374         InputRect.top = 0;
 375         InputRect.bottom = DestRect->bottom - DestRect->top;
 376     }
 377
 378     if (NULL != ClipRegion)
 379     {
 380         if (OutputRect.left < ClipRegion->rclBounds.left)
 381         {
 382             InputRect.left += ClipRegion->rclBounds.left - OutputRect.left;
 383             InputPoint.x += ClipRegion->rclBounds.left - OutputRect.left;
 384             OutputRect.left = ClipRegion->rclBounds.left;
 385         }
 386         if (ClipRegion->rclBounds.right < OutputRect.right)
 387         {
 388             InputRect.right -=  OutputRect.right - ClipRegion->rclBounds.right;
 389             OutputRect.right = ClipRegion->rclBounds.right;
 390         }
 391         if (OutputRect.top < ClipRegion->rclBounds.top)
 392         {
 393             InputRect.top += ClipRegion->rclBounds.top - OutputRect.top;
 394             InputPoint.y += ClipRegion->rclBounds.top - OutputRect.top;
 395             OutputRect.top = ClipRegion->rclBounds.top;
 396         }
 397         if (ClipRegion->rclBounds.bottom < OutputRect.bottom)
 398         {
 399             InputRect.bottom -=  OutputRect.bottom - ClipRegion->rclBounds.bottom;
 400             OutputRect.bottom = ClipRegion->rclBounds.bottom;
 401         }
 402     }
 403
 404     /* Check for degenerate case: if height or width of OutputRect is 0 pixels
 405        there's nothing to do */
 406     if (OutputRect.right <= OutputRect.left ||
 407             OutputRect.bottom <= OutputRect.top)
 408     {
 409         return TRUE;
 410     }
 411
 412     OutputObj = DestObj;
 413
 414     if (BrushOrigin)
 415     {
 416         AdjustedBrushOrigin.x = BrushOrigin->x;
 417         AdjustedBrushOrigin.y = BrushOrigin->y;
 418     }
 419     else
 420     {
 421         AdjustedBrushOrigin.x = 0;
 422         AdjustedBrushOrigin.y = 0;
 423     }
 424
 425     /* Determine clipping type */
 426     if (ClipRegion == (CLIPOBJ *) NULL)
 427     {
 428         clippingType = DC_TRIVIAL;
 429     }
 430     else
 431     {
 432         clippingType = ClipRegion->iDComplexity;
 433     }
 434
 435     if (R4_MASK == rop4)
 436     {
 437         BltRectFunc = BltMask;
 438     }
 439     else if (ROP3_TO_ROP4(PATCOPY) == rop4)
 440     {
 441         if (pbo && pbo->iSolidColor == 0xFFFFFFFF)
 442             BltRectFunc = CallDibBitBlt;
 443         else
 444             BltRectFunc = BltPatCopy;
 445     }
 446     else
 447     {
 448         BltRectFunc = CallDibBitBlt;
 449     }
 450
 451
 452     switch (clippingType)
 453     {
 454         case DC_TRIVIAL:
 455             Ret = (*BltRectFunc)(OutputObj, InputObj, Mask, ColorTranslation,
 456                                  &OutputRect, &InputPoint, MaskOrigin, pbo,
 457                                  &AdjustedBrushOrigin, rop4);
 458             break;
 459         case DC_RECT:
 460             /* Clip the blt to the clip rectangle */
 461             ClipRect.left = ClipRegion->rclBounds.left;
 462             ClipRect.right = ClipRegion->rclBounds.right;
 463             ClipRect.top = ClipRegion->rclBounds.top;
 464             ClipRect.bottom = ClipRegion->rclBounds.bottom;
 465             if (RECTL_bIntersectRect(&CombinedRect, &OutputRect, &ClipRect))
 466             {
 467                 Pt.x = InputPoint.x + CombinedRect.left - OutputRect.left;
 468                 Pt.y = InputPoint.y + CombinedRect.top - OutputRect.top;
 469                 Ret = (*BltRectFunc)(OutputObj, InputObj, Mask, ColorTranslation,
 470                                      &CombinedRect, &Pt, MaskOrigin, pbo,
 471                                      &AdjustedBrushOrigin, rop4);
 472             }
 473             break;
 474         case DC_COMPLEX:
 475             Ret = TRUE;
 476             if (OutputObj == InputObj)
 477             {
 478                 if (OutputRect.top < InputPoint.y)
 479                 {
 480                     Direction = OutputRect.left < InputPoint.x ?
 481                                 CD_RIGHTDOWN : CD_LEFTDOWN;
 482                 }
 483                 else
 484                 {
 485                     Direction = OutputRect.left < InputPoint.x ?
 486                                 CD_RIGHTUP : CD_LEFTUP;
 487                 }
 488             }
 489             else
 490             {
 491                 Direction = CD_ANY;
 492             }
 493             CLIPOBJ_cEnumStart(ClipRegion, FALSE, CT_RECTANGLES, Direction, 0);
 494             do
 495             {
 496                 EnumMore = CLIPOBJ_bEnum(ClipRegion,(ULONG) sizeof(RectEnum),
 497                                          (PVOID) &RectEnum);
 498
 499                 for (i = 0; i < RectEnum.c; i++)
 500                 {
 501                     ClipRect.left = RectEnum.arcl[i].left;
 502                     ClipRect.right = RectEnum.arcl[i].right;
 503                     ClipRect.top = RectEnum.arcl[i].top;
 504                     ClipRect.bottom = RectEnum.arcl[i].bottom;
 505                     if (RECTL_bIntersectRect(&CombinedRect, &OutputRect, &ClipRect))
 506                     {
 507                         Pt.x = InputPoint.x + CombinedRect.left - OutputRect.left;
 508                         Pt.y = InputPoint.y + CombinedRect.top - OutputRect.top;
 509                         Ret = (*BltRectFunc)(OutputObj, InputObj, Mask,
 510                                              ColorTranslation, &CombinedRect, &Pt,
 511                                              MaskOrigin, pbo, &AdjustedBrushOrigin,
 512                                              rop4) && Ret;
 513                     }
 514                 }
 515             }
 516             while (EnumMore);
 517             break;
 518     }
 519
 520     return Ret;
 521 }
 522
 523 BOOL APIENTRY
 524 IntEngBitBltEx(
 525     SURFOBJ *psoTrg,
 526     SURFOBJ *psoSrc,
 527     SURFOBJ *psoMask,
 528     CLIPOBJ *pco,
 529     XLATEOBJ *pxlo,
 530     RECTL *prclTrg,
 531     POINTL *pptlSrc,
 532     POINTL *pptlMask,
 533     BRUSHOBJ *pbo,
 534     POINTL *pptlBrush,
 535     ROP4 rop4,
 536     BOOL bRemoveMouse)
 537 {
 538     SURFACE *psurfTrg;
 539     SURFACE *psurfSrc = NULL;
 540     BOOL bResult;
 541     RECTL rclClipped;
 542     RECTL rclSrc;
 543 //    INTENG_ENTER_LEAVE EnterLeaveSource;
 544 //    INTENG_ENTER_LEAVE EnterLeaveDest;
 545     PFN_DrvBitBlt pfnBitBlt;
 546
 547     ASSERT(psoTrg);
 548     psurfTrg = CONTAINING_RECORD(psoTrg, SURFACE, SurfObj);
 549
 550     /* FIXME: Should we really allow to pass non-well-ordered rects? */
 551     rclClipped = *prclTrg;
 552     RECTL_vMakeWellOrdered(&rclClipped);
 553
 554     /* Clip target rect against the bounds of the clipping region */
 555     if (pco)
 556     {
 557         if (!RECTL_bIntersectRect(&rclClipped, &rclClipped, &pco->rclBounds))
 558         {
 559             /* Nothing left */
 560             return TRUE;
 561         }
 562
 563         /* Don't pass a clipobj with only a single rect */
 564         if (pco->iDComplexity == DC_RECT)
 565             pco = NULL;
 566     }
 567
 568     if (ROP4_USES_SOURCE(rop4))
 569     {
 570         ASSERT(psoSrc);
 571         psurfSrc = CONTAINING_RECORD(psoSrc, SURFACE, SurfObj);
 572
 573         /* Calculate source rect */
 574         rclSrc.left = pptlSrc->x + rclClipped.left - prclTrg->left;
 575         rclSrc.top = pptlSrc->y + rclClipped.top - prclTrg->top;
 576         rclSrc.right = rclSrc.left + rclClipped.right - rclClipped.left;
 577         rclSrc.bottom = rclSrc.top + rclClipped.bottom - rclClipped.top;
 578     }
 579     else
 580     {
 581         psoSrc = NULL;
 582         psurfSrc = NULL;
 583     }
 584
 585     /* Is the target surface device managed? */
 586     if (psurfTrg->flHooks & HOOK_BITBLT)
 587     {
 588         /* Is the source a different device managed surface? */
 589         if (psoSrc && psoSrc->hdev != psoTrg->hdev && psurfSrc->flHooks & HOOK_BITBLT)
 590         {
 591             DPRINT1("Need to copy to standard bitmap format!\n");
 592             ASSERT(FALSE);
 593         }
 594
 595         pfnBitBlt = GDIDEVFUNCS(psoTrg).BitBlt;
 596     }
 597
 598     /* Is the source surface device managed? */
 599     else if (psoSrc && psurfSrc->flHooks & HOOK_BITBLT)
 600     {
 601         pfnBitBlt = GDIDEVFUNCS(psoSrc).BitBlt;
 602     }
 603     else
 604     {
 605         pfnBitBlt = EngBitBlt;
 606     }
 607
 608     bResult = pfnBitBlt(psoTrg,
 609                         psoSrc,
 610                         psoMask,
 611                         pco,
 612                         pxlo,
 613                         &rclClipped,
 614                         (POINTL*)&rclSrc,
 615                         pptlMask,
 616                         pbo,
 617                         pptlBrush,
 618                         rop4);
 619
 620     // FIXME: cleanup temp surface!
 621
 622     return bResult;
 623 }
 624
 625
 626 /**** REACTOS FONT RENDERING CODE *********************************************/
 627
 628 /* renders the alpha mask bitmap */
 629 static BOOLEAN APIENTRY
 630 AlphaBltMask(SURFOBJ* psoDest,
 631              SURFOBJ* psoSource, // unused
 632              SURFOBJ* psoMask,
 633              XLATEOBJ* ColorTranslation,
 634              XLATEOBJ* SrcColorTranslation,
 635              RECTL* prclDest,
 636              POINTL* pptlSource, // unused
 637              POINTL* pptlMask,
 638              BRUSHOBJ* pbo,
 639              POINTL* pptlBrush)
 640 {
 641     LONG i, j, dx, dy;
 642     int r, g, b;
 643     ULONG Background, BrushColor, NewColor;
 644     BYTE *tMask, *lMask;
 645
 646     dx = prclDest->right  - prclDest->left;
 647     dy = prclDest->bottom - prclDest->top;
 648
 649     if (psoMask != NULL)
 650     {
 651         BrushColor = XLATEOBJ_iXlate(SrcColorTranslation, pbo ? pbo->iSolidColor : 0);
 652         r = (int)GetRValue(BrushColor);
 653         g = (int)GetGValue(BrushColor);
 654         b = (int)GetBValue(BrushColor);
 655
 656         tMask = (PBYTE)psoMask->pvScan0 + (pptlMask->y * psoMask->lDelta) + pptlMask->x;
 657         for (j = 0; j < dy; j++)
 658         {
 659             lMask = tMask;
 660             for (i = 0; i < dx; i++)
 661             {
 662                 if (*lMask > 0)
 663                 {
 664                     if (*lMask == 0xff)
 665                     {
 666                         DibFunctionsForBitmapFormat[psoDest->iBitmapFormat].DIB_PutPixel(
 667                             psoDest, prclDest->left + i, prclDest->top + j, pbo ? pbo->iSolidColor : 0);
 668                     }
 669                     else
 670                     {
 671                         Background = DIB_GetSource(psoDest, prclDest->left + i, prclDest->top + j,
 672                                                    SrcColorTranslation);
 673
 674                         NewColor =
 675                             RGB((*lMask * (r - GetRValue(Background)) >> 8) + GetRValue(Background),
 676                                 (*lMask * (g - GetGValue(Background)) >> 8) + GetGValue(Background),
 677                                 (*lMask * (b - GetBValue(Background)) >> 8) + GetBValue(Background));
 678
 679                         Background = XLATEOBJ_iXlate(ColorTranslation, NewColor);
 680                         DibFunctionsForBitmapFormat[psoDest->iBitmapFormat].DIB_PutPixel(
 681                             psoDest, prclDest->left + i, prclDest->top + j, Background);
 682                     }
 683                 }
 684                 lMask++;
 685             }
 686             tMask += psoMask->lDelta;
 687         }
 688         return TRUE;
 689     }
 690     else
 691     {
 692         return FALSE;
 693     }
 694 }
 695
 696 static
 697 BOOL APIENTRY
 698 EngMaskBitBlt(SURFOBJ *psoDest,
 699               SURFOBJ *psoMask,
 700               CLIPOBJ *ClipRegion,
 701               XLATEOBJ *DestColorTranslation,
 702               XLATEOBJ *SourceColorTranslation,
 703               RECTL *DestRect,
 704               POINTL *pptlMask,
 705               BRUSHOBJ *pbo,
 706               POINTL *BrushOrigin)
 707 {
 708     BYTE               clippingType;
 709     RECTL              CombinedRect;
 710     RECT_ENUM          RectEnum;
 711     BOOL               EnumMore;
 712     POINTL             InputPoint;
 713     RECTL              InputRect;
 714     RECTL              OutputRect;
 715     POINTL             Translate;
 716     INTENG_ENTER_LEAVE EnterLeaveSource;
 717     INTENG_ENTER_LEAVE EnterLeaveDest;
 718     SURFOBJ*           psoInput;
 719     SURFOBJ*           psoOutput;
 720     BOOLEAN            Ret = TRUE;
 721     RECTL              ClipRect;
 722     unsigned           i;
 723     POINTL             Pt;
 724     ULONG              Direction;
 725     POINTL             AdjustedBrushOrigin;
 726
 727     ASSERT(psoMask);
 728
 729     if (pptlMask)
 730     {
 731         InputRect.left = pptlMask->x;
 732         InputRect.right = pptlMask->x + (DestRect->right - DestRect->left);
 733         InputRect.top = pptlMask->y;
 734         InputRect.bottom = pptlMask->y + (DestRect->bottom - DestRect->top);
 735     }
 736     else
 737     {
 738         InputRect.left = 0;
 739         InputRect.right = DestRect->right - DestRect->left;
 740         InputRect.top = 0;
 741         InputRect.bottom = DestRect->bottom - DestRect->top;
 742     }
 743
 744     OutputRect = *DestRect;
 745     if (NULL != ClipRegion)
 746     {
 747         if (OutputRect.left < ClipRegion->rclBounds.left)
 748         {
 749             InputRect.left += ClipRegion->rclBounds.left - OutputRect.left;
 750             OutputRect.left = ClipRegion->rclBounds.left;
 751         }
 752         if (ClipRegion->rclBounds.right < OutputRect.right)
 753         {
 754             InputRect.right -=  OutputRect.right - ClipRegion->rclBounds.right;
 755             OutputRect.right = ClipRegion->rclBounds.right;
 756         }
 757         if (OutputRect.top < ClipRegion->rclBounds.top)
 758         {
 759             InputRect.top += ClipRegion->rclBounds.top - OutputRect.top;
 760             OutputRect.top = ClipRegion->rclBounds.top;
 761         }
 762         if (ClipRegion->rclBounds.bottom < OutputRect.bottom)
 763         {
 764             InputRect.bottom -=  OutputRect.bottom - ClipRegion->rclBounds.bottom;
 765             OutputRect.bottom = ClipRegion->rclBounds.bottom;
 766         }
 767     }
 768
 769     if (! IntEngEnter(&EnterLeaveSource, psoMask, &InputRect, TRUE, &Translate, &psoInput))
 770     {
 771         return FALSE;
 772     }
 773
 774     InputPoint.x = InputRect.left + Translate.x;
 775     InputPoint.y = InputRect.top + Translate.y;
 776
 777     /* Check for degenerate case: if height or width of OutputRect is 0 pixels there's
 778        nothing to do */
 779     if (OutputRect.right <= OutputRect.left || OutputRect.bottom <= OutputRect.top)
 780     {
 781         IntEngLeave(&EnterLeaveSource);
 782         return TRUE;
 783     }
 784
 785     if (! IntEngEnter(&EnterLeaveDest, psoDest, &OutputRect, FALSE, &Translate, &psoOutput))
 786     {
 787         IntEngLeave(&EnterLeaveSource);
 788         return FALSE;
 789     }
 790
 791     OutputRect.left = DestRect->left + Translate.x;
 792     OutputRect.right = DestRect->right + Translate.x;
 793     OutputRect.top = DestRect->top + Translate.y;
 794     OutputRect.bottom = DestRect->bottom + Translate.y;
 795
 796     if (BrushOrigin)
 797     {
 798         AdjustedBrushOrigin.x = BrushOrigin->x + Translate.x;
 799         AdjustedBrushOrigin.y = BrushOrigin->y + Translate.y;
 800     }
 801     else
 802         AdjustedBrushOrigin = Translate;
 803
 804     // Determine clipping type
 805     if (ClipRegion == (CLIPOBJ *) NULL)
 806     {
 807         clippingType = DC_TRIVIAL;
 808     } else {
 809         clippingType = ClipRegion->iDComplexity;
 810     }
 811
 812     switch (clippingType)
 813     {
 814         case DC_TRIVIAL:
 815             if (psoMask->iBitmapFormat == BMF_8BPP)
 816                 Ret = AlphaBltMask(psoOutput, NULL , psoInput, DestColorTranslation, SourceColorTranslation,
 817                                    &OutputRect, &InputPoint, pptlMask, pbo, &AdjustedBrushOrigin);
 818             else
 819                 Ret = BltMask(psoOutput, NULL, psoInput, DestColorTranslation,
 820                               &OutputRect, &InputPoint, pptlMask, pbo, &AdjustedBrushOrigin,
 821                               R4_MASK);
 822             break;
 823         case DC_RECT:
 824             // Clip the blt to the clip rectangle
 825             ClipRect.left = ClipRegion->rclBounds.left + Translate.x;
 826             ClipRect.right = ClipRegion->rclBounds.right + Translate.x;
 827             ClipRect.top = ClipRegion->rclBounds.top + Translate.y;
 828             ClipRect.bottom = ClipRegion->rclBounds.bottom + Translate.y;
 829             if (RECTL_bIntersectRect(&CombinedRect, &OutputRect, &ClipRect))
 830             {
 831                 Pt.x = InputPoint.x + CombinedRect.left - OutputRect.left;
 832                 Pt.y = InputPoint.y + CombinedRect.top - OutputRect.top;
 833                 if (psoMask->iBitmapFormat == BMF_8BPP)
 834                 {
 835                     Ret = AlphaBltMask(psoOutput, psoInput, psoMask, DestColorTranslation, SourceColorTranslation,
 836                                        &CombinedRect, &Pt, pptlMask, pbo, &AdjustedBrushOrigin);
 837                 }
 838                 else
 839                 {
 840                     Ret = BltMask(psoOutput, psoInput, psoMask, DestColorTranslation,
 841                                   &CombinedRect, &Pt, pptlMask, pbo, &AdjustedBrushOrigin, R4_MASK);
 842                 }
 843             }
 844             break;
 845         case DC_COMPLEX:
 846             Ret = TRUE;
 847             if (psoOutput == psoInput)
 848             {
 849                 if (OutputRect.top < InputPoint.y)
 850                 {
 851                     Direction = OutputRect.left < InputPoint.x ? CD_RIGHTDOWN : CD_LEFTDOWN;
 852                 }
 853                 else
 854                 {
 855                     Direction = OutputRect.left < InputPoint.x ? CD_RIGHTUP : CD_LEFTUP;
 856                 }
 857             }
 858             else
 859             {
 860                 Direction = CD_ANY;
 861             }
 862             CLIPOBJ_cEnumStart(ClipRegion, FALSE, CT_RECTANGLES, Direction, 0);
 863             do
 864             {
 865                 EnumMore = CLIPOBJ_bEnum(ClipRegion,(ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
 866
 867                 for (i = 0; i < RectEnum.c; i++)
 868                 {
 869                     ClipRect.left = RectEnum.arcl[i].left + Translate.x;
 870                     ClipRect.right = RectEnum.arcl[i].right + Translate.x;
 871                     ClipRect.top = RectEnum.arcl[i].top + Translate.y;
 872                     ClipRect.bottom = RectEnum.arcl[i].bottom + Translate.y;
 873                     if (RECTL_bIntersectRect(&CombinedRect, &OutputRect, &ClipRect))
 874                     {
 875                         Pt.x = InputPoint.x + CombinedRect.left - OutputRect.left;
 876                         Pt.y = InputPoint.y + CombinedRect.top - OutputRect.top;
 877                         if (psoMask->iBitmapFormat == BMF_8BPP)
 878                         {
 879                             Ret = AlphaBltMask(psoOutput, psoInput, psoMask,
 880                                                DestColorTranslation,
 881                                                SourceColorTranslation,
 882                                                &CombinedRect, &Pt, pptlMask, pbo,
 883                                                &AdjustedBrushOrigin) && Ret;
 884                         }
 885                         else
 886                         {
 887                             Ret = BltMask(psoOutput, psoInput, psoMask,
 888                                           DestColorTranslation, &CombinedRect, &Pt,
 889                                           pptlMask, pbo, &AdjustedBrushOrigin,
 890                                           R4_MASK) && Ret;
 891                         }
 892                     }
 893                 }
 894             }
 895             while (EnumMore);
 896             break;
 897     }
 898
 899
 900     IntEngLeave(&EnterLeaveDest);
 901     IntEngLeave(&EnterLeaveSource);
 902
 903     return Ret;
 904 }
 905
 906 BOOL APIENTRY
 907 IntEngMaskBlt(SURFOBJ *psoDest,
 908               SURFOBJ *psoMask,
 909               CLIPOBJ *ClipRegion,
 910               XLATEOBJ *DestColorTranslation,
 911               XLATEOBJ *SourceColorTranslation,
 912               RECTL *DestRect,
 913               POINTL *pptlMask,
 914               BRUSHOBJ *pbo,
 915               POINTL *BrushOrigin)
 916 {
 917     BOOLEAN ret;
 918     RECTL OutputRect;
 919     POINTL InputPoint;
 920     SURFACE *psurfDest;
 921
 922     ASSERT(psoMask);
 923
 924     if (pptlMask)
 925     {
 926         InputPoint = *pptlMask;
 927     }
 928
 929     /* Clip against the bounds of the clipping region so we won't try to write
 930      * outside the surface */
 931     if (NULL != ClipRegion)
 932     {
 933         if (!RECTL_bIntersectRect(&OutputRect, DestRect, &ClipRegion->rclBounds))
 934         {
 935             return TRUE;
 936         }
 937         InputPoint.x += OutputRect.left - DestRect->left;
 938         InputPoint.y += OutputRect.top - DestRect->top;
 939     }
 940     else
 941     {
 942         OutputRect = *DestRect;
 943     }
 944
 945     /* No success yet */
 946     ret = FALSE;
 947     ASSERT(psoDest);
 948     psurfDest = CONTAINING_RECORD(psoDest, SURFACE, SurfObj);
 949
 950     /* Dummy BitBlt to let driver know that it should flush its changes.
 951        This should really be done using a call to DrvSynchronizeSurface,
 952        but the VMware driver doesn't hook that call. */
 953     IntEngBitBltEx(psoDest, NULL, psoMask, ClipRegion, DestColorTranslation,
 954                    DestRect, pptlMask, pptlMask, pbo, BrushOrigin,
 955                    R4_NOOP, FALSE);
 956
 957     ret = EngMaskBitBlt(psoDest, psoMask, ClipRegion, DestColorTranslation, SourceColorTranslation,
 958                         &OutputRect, &InputPoint, pbo, BrushOrigin);
 959
 960     /* Dummy BitBlt to let driver know that something has changed. */
 961     IntEngBitBltEx(psoDest, NULL, psoMask, ClipRegion, DestColorTranslation,
 962                    DestRect, pptlMask, pptlMask, pbo, BrushOrigin,
 963                    R4_NOOP, FALSE);
 964
 965     return ret;
 966 }
 967
 968 /* EOF */