win32ss/gdi/diblib/DibLib_BitBlt.h

   1
   2 #if __USES_SOLID_BRUSH
   3 #undef __USES_PATTERN
   4 #define __USES_PATTERN 0
   5 #endif
   6
   7 #define _DibFunction __DIB_FUNCTION_NAME(__FUNCTIONNAME, _SOURCE_BPP, _DEST_BPP)
   8 #define _ReadPixel(bpp, pj, jShift) __PASTE(_ReadPixel_, bpp)(pj, jShift)
   9 #define _WritePixel(pj, jShift, c) __PASTE(_WritePixel_, _DEST_BPP)(pj, jShift, c)
  10 #define _NextPixel(bpp, ppj, pjShift) __PASTE(_NextPixel_, bpp)(ppj, pjShift)
  11 #define _SHIFT(bpp, x) __PASTE(_SHIFT_, bpp)(x)
  12 #define _CALCSHIFT(bpp, pshift, x) __PASTE(_CALCSHIFT_, bpp)(pshift, x)
  13
  14 #if (__PASTE(_DibFunction, _manual) != 1)
  15
  16 VOID
  17 FASTCALL
  18 _DibFunction(PBLTDATA pBltData)
  19 {
  20     ULONG cRows, cLines, ulDest;
  21     PBYTE pjDest, pjDestBase;
  22     _SHIFT(_DEST_BPP, BYTE jDstShift;)
  23 #if __USES_MASK
  24     PBYTE pjMask, pjMaskBase;
  25     BYTE jMaskBit, jMskShift;
  26 #endif
  27 #if __USES_SOURCE
  28     PBYTE pjSource, pjSrcBase;
  29     ULONG ulSource;
  30     _SHIFT(_SOURCE_BPP, BYTE jSrcShift;)
  31 #endif
  32 #if __USES_PATTERN
  33     PBYTE pjPattern, pjPatBase;
  34     ULONG ulPattern, cPatRows, cPatLines;
  35     _SHIFT(_DEST_BPP, BYTE jPatShift;)
  36 #endif
  37 #if __USES_SOLID_BRUSH
  38     ULONG ulPattern = pBltData->ulSolidColor;
  39 #endif
  40
  41 #if __USES_MASK
  42     pjMaskBase = pBltData->siMsk.pjBase;
  43 #endif
  44 #if __USES_PATTERN
  45     pjPatBase = pBltData->siPat.pjBase;
  46     pjPatBase += pBltData->siPat.ptOrig.y * pBltData->siPat.lDelta;
  47     cPatLines = pBltData->ulPatHeight - pBltData->siPat.ptOrig.y;
  48 #endif
  49     pjDestBase = pBltData->siDst.pjBase;
  50 #if __USES_SOURCE
  51     pjSrcBase = pBltData->siSrc.pjBase;
  52 #endif
  53
  54     /* Loop all lines */
  55     cLines = pBltData->ulHeight;
  56     while (cLines--)
  57     {
  58         /* Set current bit pointers and shifts */
  59         pjDest = pjDestBase;
  60         _CALCSHIFT(_DEST_BPP, &jDstShift, pBltData->siDst.ptOrig.x);
  61 #if __USES_SOURCE
  62         pjSource = pjSrcBase;
  63         _CALCSHIFT(_SOURCE_BPP, &jSrcShift, pBltData->siSrc.ptOrig.x);
  64 #endif
  65 #if __USES_MASK
  66         pjMask = pjMaskBase;
  67         _CALCSHIFT_1(&jMskShift, pBltData->siMsk.ptOrig.x);
  68 #endif
  69 #if __USES_PATTERN
  70         pjPattern = pjPatBase + pBltData->siPat.ptOrig.x * _DEST_BPP / 8;
  71         _CALCSHIFT(_DEST_BPP, &jPatShift, pBltData->siPat.ptOrig.x);
  72         cPatRows = pBltData->ulPatWidth - pBltData->siPat.ptOrig.x;
  73 #endif
  74
  75         /* Loop all rows */
  76         cRows = pBltData->ulWidth;
  77         while (cRows--)
  78         {
  79 #if __USES_MASK
  80             /* Read the mask color and go to the next mask pixel */
  81             jMaskBit = _ReadPixel_1(pjMask, jMskShift);
  82             _NextPixel(1, &pjMask, &jMskShift);
  83 #endif
  84 #if __USES_PATTERN
  85             /* Read the pattern color and go to the next pattern pixel */
  86             ulPattern = _ReadPixel(_DEST_BPP, pjPattern, jPatShift);
  87             _NextPixel(_DEST_BPP, &pjPattern, &jPatShift);
  88
  89             /* Check if this was the last pixel in the pattern */
  90             if (--cPatRows == 0)
  91             {
  92                 /* Restart pattern from x = 0 */
  93                 pjPattern = pjPatBase;
  94                 _SHIFT(_DEST_BPP, jPatShift = (_DEST_BPP == 1) ? 7 : 4;)
  95                 cPatRows = pBltData->ulPatWidth;
  96             }
  97 #endif
  98 #if __USES_SOURCE
  99             /* Read the pattern color, xlate it and go to the next pixel */
 100             ulSource = _ReadPixel(_SOURCE_BPP, pjSource, jSrcShift);
 101             ulSource = _DibXlate(pBltData, ulSource);
 102             _NextPixel(_SOURCE_BPP, &pjSource, &jSrcShift);
 103 #endif
 104 #if __USES_DEST
 105             ulDest = _ReadPixel(_DEST_BPP, pjDest, jDstShift);
 106 #endif
 107             /* Apply the ROP operation on the colors */
 108             ulDest = _DibDoRop(pBltData, jMaskBit, ulDest, ulSource, ulPattern);
 109
 110             /* Write the pixel and go to the next dest pixel */
 111             _WritePixel(pjDest, jDstShift, ulDest);
 112             _NextPixel(_DEST_BPP, &pjDest, &jDstShift);
 113         }
 114
 115         pjDestBase += pBltData->siDst.cjAdvanceY;
 116 #if __USES_SOURCE
 117         pjSrcBase += pBltData->siSrc.cjAdvanceY;
 118 #endif
 119 #if __USES_PATTERN
 120         /* Go to the next pattern line */
 121         pjPatBase += pBltData->siPat.cjAdvanceY;
 122
 123         /* Check if this was the last line in the pattern */
 124         if (--cPatLines == 0)
 125         {
 126             /* Restart pattern from y = 0 */
 127             pjPatBase = pBltData->siPat.pjBase;
 128             cPatLines = pBltData->ulPatHeight;
 129         }
 130 #endif
 131     }
 132 }
 133
 134 #endif // manual
 135
 136 #undef _DibFunction
 137 #undef __FUNCTIONNAME2