* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/* $Id: dib16bpp.c,v 1.15 2003/12/18 18:30:48 fireball Exp $ */
-#undef WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#include <stdlib.h>
-#include <math.h>
-#include <win32k/bitmaps.h>
-#include <win32k/debug.h>
+
+#include <w32k.h>
+
+#define NDEBUG
#include <debug.h>
-#include <ddk/winddi.h>
-#include "../eng/objects.h"
-#include "dib.h"
VOID
-DIB_16BPP_PutPixel(PSURFOBJ SurfObj, LONG x, LONG y, ULONG c)
+DIB_16BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
{
- PBYTE byteaddr = SurfObj->pvScan0 + y * SurfObj->lDelta;
+ PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
PWORD addr = (PWORD)byteaddr + x;
*addr = (WORD)c;
}
ULONG
-DIB_16BPP_GetPixel(PSURFOBJ SurfObj, LONG x, LONG y)
+DIB_16BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
{
- PBYTE byteaddr = SurfObj->pvScan0 + y * SurfObj->lDelta;
+ PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
PWORD addr = (PWORD)byteaddr + x;
return (ULONG)(*addr);
}
VOID
-DIB_16BPP_HLine(PSURFOBJ SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
+DIB_16BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
{
- PBYTE byteaddr = SurfObj->pvScan0 + y * SurfObj->lDelta;
- PWORD addr = (PWORD)byteaddr + x1;
+ PDWORD addr = (PDWORD)((PWORD)((PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta) + x1);
+
+
+#ifdef _M_IX86
+ /* This is about 10% faster than the generic C code below */
+ LONG Count = x2 - x1;
+
+ __asm__ __volatile__ (
+" cld\n"
+" mov %0, %%eax\n"
+" shl $16, %%eax\n"
+" andl $0xffff, %0\n" /* If the pixel value is "abcd", put "abcdabcd" in %eax */
+" or %0, %%eax\n"
+" mov %2, %%edi\n"
+" test $0x03, %%edi\n" /* Align to fullword boundary */
+" jz 0f\n"
+" stosw\n"
+" dec %1\n"
+" jz 1f\n"
+"0:\n"
+" mov %1,%%ecx\n" /* Setup count of fullwords to fill */
+" shr $1,%%ecx\n"
+" rep stosl\n" /* The actual fill */
+" test $0x01, %1\n" /* One left to do at the right side? */
+" jz 1f\n"
+" stosw\n"
+"1:\n"
+ : /* no output */
+ : "r"(c), "r"(Count), "m"(addr)
+ : "%eax", "%ecx", "%edi");
+#else /* _M_IX86 */
LONG cx = x1;
+ DWORD cc;
- while(cx < x2) {
- *addr = (WORD)c;
- ++addr;
- ++cx;
+ if (0 != (cx & 0x01)) {
+ *((PWORD) addr) = c;
+ cx++;
+ addr = (PDWORD)((PWORD)(addr) + 1);
+ }
+ cc = ((c & 0xffff) << 16) | (c & 0xffff);
+ while(cx + 1 < x2) {
+ *addr++ = cc;
+ cx += 2;
+ }
+ if (cx < x2) {
+ *((PWORD) addr) = c;
}
+#endif /* _M_IX86 */
}
+
VOID
-DIB_16BPP_VLine(PSURFOBJ SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
+DIB_16BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
{
+#ifdef _M_IX86
+ asm volatile(
+ " testl %2, %2" "\n\t"
+ " jle 2f" "\n\t"
+ " movl %2, %%ecx" "\n\t"
+ " shrl $2, %2" "\n\t"
+ " andl $3, %%ecx" "\n\t"
+ " jz 1f" "\n\t"
+ "0:" "\n\t"
+ " movw %%ax, (%0)" "\n\t"
+ " addl %1, %0" "\n\t"
+ " decl %%ecx" "\n\t"
+ " jnz 0b" "\n\t"
+ " testl %2, %2" "\n\t"
+ " jz 2f" "\n\t"
+ "1:" "\n\t"
+ " movw %%ax, (%0)" "\n\t"
+ " addl %1, %0" "\n\t"
+ " movw %%ax, (%0)" "\n\t"
+ " addl %1, %0" "\n\t"
+ " movw %%ax, (%0)" "\n\t"
+ " addl %1, %0" "\n\t"
+ " movw %%ax, (%0)" "\n\t"
+ " addl %1, %0" "\n\t"
+ " decl %2" "\n\t"
+ " jnz 1b" "\n\t"
+ "2:" "\n\t"
+ : /* no output */
+ : "r"((PBYTE)SurfObj->pvScan0 + (y1 * SurfObj->lDelta) + (x * sizeof (WORD))),
+ "r"(SurfObj->lDelta), "r"(y2 - y1), "a"(c)
+ : "cc", "memory", "%ecx");
+#else
PBYTE byteaddr = SurfObj->pvScan0 + y1 * SurfObj->lDelta;
PWORD addr = (PWORD)byteaddr + x;
LONG lDelta = SurfObj->lDelta;
byteaddr += lDelta;
addr = (PWORD)byteaddr;
}
+#endif
}
-BOOLEAN STATIC
-DIB_16BPP_BitBltSrcCopy(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
- SURFGDI *DestGDI, SURFGDI *SourceGDI,
- PRECTL DestRect, POINTL *SourcePoint,
- XLATEOBJ *ColorTranslation)
+BOOLEAN
+DIB_16BPP_BitBltSrcCopy(PBLTINFO BltInfo)
{
LONG i, j, sx, sy, xColor, f1;
PBYTE SourceBits, DestBits, SourceLine, DestLine;
PBYTE SourceBits_4BPP, SourceLine_4BPP;
- DestBits = DestSurf->pvScan0 + (DestRect->top * DestSurf->lDelta) + 2 * DestRect->left;
+ DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + 2 * BltInfo->DestRect.left;
- switch(SourceGDI->BitsPerPixel)
+ switch(BltInfo->SourceSurface->iBitmapFormat)
{
- case 1:
- sx = SourcePoint->x;
- sy = SourcePoint->y;
+ case BMF_1BPP:
+ sx = BltInfo->SourcePoint.x;
+ sy = BltInfo->SourcePoint.y;
- for (j=DestRect->top; j<DestRect->bottom; j++)
+ for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
- sx = SourcePoint->x;
- for (i=DestRect->left; i<DestRect->right; i++)
+ sx = BltInfo->SourcePoint.x;
+ for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
- if(DIB_1BPP_GetPixel(SourceSurf, sx, sy) == 0)
+ if(DIB_1BPP_GetPixel(BltInfo->SourceSurface, sx, sy) == 0)
{
- DIB_16BPP_PutPixel(DestSurf, i, j, XLATEOBJ_iXlate(ColorTranslation, 0));
+ DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
} else {
- DIB_16BPP_PutPixel(DestSurf, i, j, XLATEOBJ_iXlate(ColorTranslation, 1));
+ DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 1));
}
sx++;
}
}
break;
- case 4:
- SourceBits_4BPP = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + (SourcePoint->x >> 1);
+ case BMF_4BPP:
+ SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + (BltInfo->SourcePoint.x >> 1);
- for (j=DestRect->top; j<DestRect->bottom; j++)
+ for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
SourceLine_4BPP = SourceBits_4BPP;
- sx = SourcePoint->x;
+ sx = BltInfo->SourcePoint.x;
f1 = sx & 1;
- for (i=DestRect->left; i<DestRect->right; i++)
+ for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
- xColor = XLATEOBJ_iXlate(ColorTranslation,
- (*SourceLine_4BPP & altnotmask[sx&1]) >> (4 * (1-(sx & 1))));
- DIB_16BPP_PutPixel(DestSurf, i, j, xColor);
+ xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest,
+ (*SourceLine_4BPP & altnotmask[f1]) >> (4 * (1 - f1)));
+ DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
if(f1 == 1) { SourceLine_4BPP++; f1 = 0; } else { f1 = 1; }
sx++;
}
- SourceBits_4BPP += SourceSurf->lDelta;
+ SourceBits_4BPP += BltInfo->SourceSurface->lDelta;
}
break;
- case 8:
- SourceLine = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + SourcePoint->x;
+ case BMF_8BPP:
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + BltInfo->SourcePoint.x;
DestLine = DestBits;
- for (j = DestRect->top; j < DestRect->bottom; j++)
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
- for (i = DestRect->left; i < DestRect->right; i++)
+ for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(ColorTranslation, *SourceBits);
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *SourceBits);
SourceBits += 1;
DestBits += 2;
}
- SourceLine += SourceSurf->lDelta;
- DestLine += DestSurf->lDelta;
+ SourceLine += BltInfo->SourceSurface->lDelta;
+ DestLine += BltInfo->DestSurface->lDelta;
}
break;
- case 16:
- if (NULL == ColorTranslation || 0 != (ColorTranslation->flXlate & XO_TRIVIAL))
+ case BMF_16BPP:
+ if (NULL == BltInfo->XlateSourceToDest || 0 != (BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL))
{
- if (DestRect->top < SourcePoint->y)
+ if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
{
- SourceBits = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + 2 * SourcePoint->x;
- for (j = DestRect->top; j < DestRect->bottom; j++)
+ SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 2 * BltInfo->SourcePoint.x;
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
- RtlMoveMemory(DestBits, SourceBits, 2 * (DestRect->right - DestRect->left));
- SourceBits += SourceSurf->lDelta;
- DestBits += DestSurf->lDelta;
+ RtlMoveMemory(DestBits, SourceBits, 2 * (BltInfo->DestRect.right - BltInfo->DestRect.left));
+ SourceBits += BltInfo->SourceSurface->lDelta;
+ DestBits += BltInfo->DestSurface->lDelta;
}
}
else
{
- SourceBits = SourceSurf->pvScan0 + ((SourcePoint->y + DestRect->bottom - DestRect->top - 1) * SourceSurf->lDelta) + 2 * SourcePoint->x;
- DestBits = DestSurf->pvScan0 + ((DestRect->bottom - 1) * DestSurf->lDelta) + 2 * DestRect->left;
- for (j = DestRect->bottom - 1; DestRect->top <= j; j--)
+ SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 + ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta) + 2 * BltInfo->SourcePoint.x;
+ DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + 2 * BltInfo->DestRect.left;
+ for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
{
- RtlMoveMemory(DestBits, SourceBits, 2 * (DestRect->right - DestRect->left));
- SourceBits -= SourceSurf->lDelta;
- DestBits -= DestSurf->lDelta;
+ RtlMoveMemory(DestBits, SourceBits, 2 * (BltInfo->DestRect.right - BltInfo->DestRect.left));
+ SourceBits -= BltInfo->SourceSurface->lDelta;
+ DestBits -= BltInfo->DestSurface->lDelta;
}
}
}
else
{
- if (DestRect->top < SourcePoint->y)
+ if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
{
- SourceLine = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + 2 * SourcePoint->x;
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 2 * BltInfo->SourcePoint.x;
DestLine = DestBits;
- for (j = DestRect->top; j < DestRect->bottom; j++)
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
- for (i = DestRect->left; i < DestRect->right; i++)
+ for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(ColorTranslation, *((WORD *)SourceBits));
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *((WORD *)SourceBits));
SourceBits += 2;
DestBits += 2;
}
- SourceLine += SourceSurf->lDelta;
- DestLine += DestSurf->lDelta;
+ SourceLine += BltInfo->SourceSurface->lDelta;
+ DestLine += BltInfo->DestSurface->lDelta;
}
}
else
{
- SourceLine = SourceSurf->pvScan0 + ((SourcePoint->y + DestRect->bottom - DestRect->top - 1) * SourceSurf->lDelta) + 2 * SourcePoint->x;
- DestLine = DestSurf->pvScan0 + ((DestRect->bottom - 1) * DestSurf->lDelta) + 2 * DestRect->left;
- for (j = DestRect->bottom - 1; DestRect->top <= j; j--)
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta) + 2 * BltInfo->SourcePoint.x;
+ DestLine = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + 2 * BltInfo->DestRect.left;
+ for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
{
SourceBits = SourceLine;
DestBits = DestLine;
- for (i = DestRect->left; i < DestRect->right; i++)
+ for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(ColorTranslation, *((WORD *)SourceBits));
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *((WORD *)SourceBits));
SourceBits += 2;
DestBits += 2;
}
- SourceLine -= SourceSurf->lDelta;
- DestLine -= DestSurf->lDelta;
+ SourceLine -= BltInfo->SourceSurface->lDelta;
+ DestLine -= BltInfo->DestSurface->lDelta;
}
}
}
break;
- case 24:
- SourceLine = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + 3 * SourcePoint->x;
+ case BMF_24BPP:
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 3 * BltInfo->SourcePoint.x;
DestLine = DestBits;
- for (j = DestRect->top; j < DestRect->bottom; j++)
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
- for (i = DestRect->left; i < DestRect->right; i++)
+ for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
xColor = (*(SourceBits + 2) << 0x10) +
(*(SourceBits + 1) << 0x08) +
(*(SourceBits));
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(ColorTranslation, xColor);
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
SourceBits += 3;
DestBits += 2;
}
- SourceLine += SourceSurf->lDelta;
- DestLine += DestSurf->lDelta;
+ SourceLine += BltInfo->SourceSurface->lDelta;
+ DestLine += BltInfo->DestSurface->lDelta;
}
break;
- case 32:
- SourceLine = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + 4 * SourcePoint->x;
+ case BMF_32BPP:
+ SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 4 * BltInfo->SourcePoint.x;
DestLine = DestBits;
- for (j = DestRect->top; j < DestRect->bottom; j++)
+ for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
- for (i = DestRect->left; i < DestRect->right; i++)
+ for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
- *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(ColorTranslation, *((PDWORD) SourceBits));
+ *((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *((PDWORD) SourceBits));
SourceBits += 4;
DestBits += 2;
}
- SourceLine += SourceSurf->lDelta;
- DestLine += DestSurf->lDelta;
+ SourceLine += BltInfo->SourceSurface->lDelta;
+ DestLine += BltInfo->DestSurface->lDelta;
}
break;
default:
- DbgPrint("DIB_16BPP_Bitblt: Unhandled Source BPP: %u\n", SourceGDI->BitsPerPixel);
+ DPRINT1("DIB_16BPP_Bitblt: Unhandled Source BPP: %u\n", BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
return FALSE;
}
return TRUE;
}
+/* Optimize for bitBlt */
BOOLEAN
-DIB_16BPP_BitBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
- SURFGDI *DestGDI, SURFGDI *SourceGDI,
- PRECTL DestRect, POINTL *SourcePoint,
- PBRUSHOBJ Brush, PPOINTL BrushOrigin,
- XLATEOBJ *ColorTranslation, ULONG Rop4)
+DIB_16BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
{
- LONG i, j, sx, sy;
- ULONG Dest, Source, Pattern;
- PULONG DestBits;
- BOOL UsesSource = ((Rop4 & 0xCC0000) >> 2) != (Rop4 & 0x330000);
- BOOL UsesPattern = ((Rop4 & 0xF00000) >> 4) != (Rop4 & 0x0F0000);
- LONG RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x1);
-
- if (Rop4 == SRCCOPY)
- {
- return(DIB_16BPP_BitBltSrcCopy(DestSurf, SourceSurf, DestGDI, SourceGDI, DestRect, SourcePoint, ColorTranslation));
- }
- else
- {
- sy = SourcePoint->y;
-
- for (j=DestRect->top; j<DestRect->bottom; j++)
- {
- sx = SourcePoint->x;
- DestBits = (PULONG)(DestSurf->pvScan0 + 2 * DestRect->left + j * DestSurf->lDelta);
- for (i=DestRect->left; i<RoundedRight; i+=2, DestBits++)
- {
- Dest = *DestBits;
- if (UsesSource)
- {
- Source = DIB_GetSource(SourceSurf, SourceGDI, sx + (i - DestRect->left), sy, ColorTranslation);
- Source |= DIB_GetSource(SourceSurf, SourceGDI, sx + (i - DestRect->left) + 1, sy, ColorTranslation) << 16;
- }
- if (UsesPattern)
- {
- /* FIXME: No support for pattern brushes. */
- Pattern = (Brush->iSolidColor & 0xFFFF) |
- ((Brush->iSolidColor & 0xFFFF) << 16);
- }
- *DestBits = DIB_DoRop(Rop4, Dest, Source, Pattern);
- }
- if (i < DestRect->right)
- {
- Dest = *DestBits;
- for (; i < DestRect->right; i++)
- {
- if (UsesSource)
- {
- Source = DIB_GetSource(SourceSurf, SourceGDI, sx + (i - DestRect->left), sy, ColorTranslation);
- }
- if (UsesPattern)
- {
- /* FIXME: No support for pattern brushes. */
- Pattern = (Brush->iSolidColor & 0xFFFF) |
- ((Brush->iSolidColor & 0xFFFF) << 16);
- }
- DIB_16BPP_PutPixel(DestSurf, i, j, DIB_DoRop(Rop4, Dest, Source, Pattern) & 0xFFFF);
- Dest >>= 16;
- }
- }
- sy++;
- }
- }
- return TRUE;
-}
+ ULONG DestY;
+
+#ifdef _M_IX86
+ /* This is about 10% faster than the generic C code below */
+ ULONG delta = DestSurface->lDelta;
+ ULONG width = (DestRect->right - DestRect->left) ;
+ PULONG pos = (PULONG) ((PBYTE)DestSurface->pvScan0 + DestRect->top * delta + (DestRect->left<<1));
+ color = (color&0xffff); /* If the color value is "abcd", put "abcdabcd" into color */
+ color += (color<<16);
+
+ for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
+ {
+ __asm__ __volatile__ (
+ " cld\n"
+ " mov %1,%%ebx\n"
+ " mov %2,%%edi\n"
+ " test $0x03, %%edi\n" /* Align to fullword boundary */
+ " jz .FL1\n"
+ " stosw\n"
+ " dec %%ebx\n"
+ " jz .FL2\n"
+ ".FL1:\n"
+ " mov %%ebx,%%ecx\n" /* Setup count of fullwords to fill */
+ " shr $1,%%ecx\n"
+ " rep stosl\n" /* The actual fill */
+ " test $0x01, %%ebx\n" /* One left to do at the right side? */
+ " jz .FL2\n"
+ " stosw\n"
+ ".FL2:\n"
+ :
+ : "a" (color), "r" (width), "m" (pos)
+ : "%ecx", "%ebx", "%edi");
+ pos =(PULONG)((ULONG_PTR)pos + delta);
+ }
+#else /* _M_IX86 */
+ for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
+ {
+ DIB_16BPP_HLine (DestSurface, DestRect->left, DestRect->right, DestY, color);
+ }
+#endif
+return TRUE;
+}
/*
=======================================
Stretching functions goes below
typedef unsigned short PIXEL;
/* 16-bit HiColor (565 format) */
-inline PIXEL average16(PIXEL a, PIXEL b)
+__inline PIXEL average16(PIXEL a, PIXEL b)
{
// This one doesn't work
/*
}*/ /* if */
// This one should be correct, but it's too long
-/*
+/*
unsigned char r1, g1, b1, r2, g2, b2, rr, gr, br;
unsigned short res;
-
+
r1 = (a & 0xF800) >> 11;
g1 = (a & 0x7E0) >> 5;
b1 = (a & 0x1F);
-
+
r2 = (b & 0xF800) >> 11;
g2 = (b & 0x7E0) >> 5;
b2 = (b & 0x1F);
-
+
rr = (r1+r2) / 2;
gr = (g1+g2) / 2;
br = (b1+b2) / 2;
-
+
res = (rr << 11) + (gr << 5) + br;
return res;
int NumPixels = TgtWidth;
int IntPart = SrcWidth / TgtWidth;
int FractPart = SrcWidth % TgtWidth;
- int Mid = TgtWidth / 2;
+ int Mid = TgtWidth >> 1;
int E = 0;
int skip;
PIXEL p;
*Target++ = *Source;
}
+static BOOLEAN
+FinalCopy16(PIXEL *Target, PIXEL *Source, PSPAN ClipSpans, UINT ClipSpansCount, UINT *SpanIndex,
+ UINT DestY, RECTL *DestRect)
+{
+ LONG Left, Right;
+
+ while (ClipSpans[*SpanIndex].Y < DestY
+ || (ClipSpans[*SpanIndex].Y == DestY
+ && ClipSpans[*SpanIndex].X + ClipSpans[*SpanIndex].Width < DestRect->left))
+ {
+ (*SpanIndex)++;
+ if (ClipSpansCount <= *SpanIndex)
+ {
+ /* No more spans, everything else is clipped away, we're done */
+ return FALSE;
+ }
+ }
+ while (ClipSpans[*SpanIndex].Y == DestY)
+ {
+ if (ClipSpans[*SpanIndex].X < DestRect->right)
+ {
+ Left = max(ClipSpans[*SpanIndex].X, DestRect->left);
+ Right = min(ClipSpans[*SpanIndex].X + ClipSpans[*SpanIndex].Width, DestRect->right);
+ memcpy(Target + Left - DestRect->left, Source + Left - DestRect->left,
+ (Right - Left) * sizeof(PIXEL));
+ }
+ (*SpanIndex)++;
+ if (ClipSpansCount <= *SpanIndex)
+ {
+ /* No more spans, everything else is clipped away, we're done */
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
-void ScaleRectAvg16(PIXEL *Target, PIXEL *Source, int SrcWidth, int SrcHeight,
- int TgtWidth, int TgtHeight, int srcPitch, int dstPitch)
+BOOLEAN ScaleRectAvg16(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
+ RECTL* DestRect, RECTL *SourceRect,
+ POINTL* MaskOrigin, POINTL BrushOrigin,
+ CLIPOBJ *ClipRegion, XLATEOBJ *ColorTranslation,
+ ULONG Mode)
{
- int NumPixels = TgtHeight;
- int IntPart = (SrcHeight / TgtHeight) * (SrcWidth+1);
- int FractPart = SrcHeight % TgtHeight;
- int Mid = TgtHeight / 2;
+ int NumPixels = DestRect->bottom - DestRect->top;
+ int IntPart = (((SourceRect->bottom - SourceRect->top) / (DestRect->bottom - DestRect->top)) * SourceSurf->lDelta) >> 1;
+ int FractPart = (SourceRect->bottom - SourceRect->top) % (DestRect->bottom - DestRect->top);
+ int Mid = (DestRect->bottom - DestRect->top) >> 1;
int E = 0;
int skip;
PIXEL *ScanLine, *ScanLineAhead;
PIXEL *PrevSource = NULL;
PIXEL *PrevSourceAhead = NULL;
-
- skip = (TgtHeight < SrcHeight) ? 0 : (TgtHeight / (2*SrcHeight) + 1);
+ PIXEL *Target = (PIXEL *) ((PBYTE)DestSurf->pvScan0 + (DestRect->top * DestSurf->lDelta) + 2 * DestRect->left);
+ PIXEL *Source = (PIXEL *) ((PBYTE)SourceSurf->pvScan0 + (SourceRect->top * SourceSurf->lDelta) + 2 * SourceRect->left);
+ PSPAN ClipSpans;
+ UINT ClipSpansCount;
+ UINT SpanIndex;
+ LONG DestY;
+
+ if (! ClipobjToSpans(&ClipSpans, &ClipSpansCount, ClipRegion, DestRect))
+ {
+ return FALSE;
+ }
+ if (0 == ClipSpansCount)
+ {
+ /* No clip spans == empty clipping region, everything clipped away */
+ ASSERT(NULL == ClipSpans);
+ return TRUE;
+ }
+ skip = (DestRect->bottom - DestRect->top < SourceRect->bottom - SourceRect->top) ? 0 : ((DestRect->bottom - DestRect->top) / (2 * (SourceRect->bottom - SourceRect->top)) + 1);
NumPixels -= skip;
- ScanLine = (PIXEL*)ExAllocatePool(NonPagedPool, TgtWidth*sizeof(PIXEL)); // FIXME: Should we use PagedPool here?
- ScanLineAhead = (PIXEL *)ExAllocatePool(NonPagedPool, TgtWidth*sizeof(PIXEL));
+ ScanLine = (PIXEL*)ExAllocatePool(PagedPool, (DestRect->right - DestRect->left) * sizeof(PIXEL));
+ ScanLineAhead = (PIXEL *)ExAllocatePool(PagedPool, (DestRect->right - DestRect->left) * sizeof(PIXEL));
+ DestY = DestRect->top;
+ SpanIndex = 0;
while (NumPixels-- > 0) {
if (Source != PrevSource) {
if (Source == PrevSourceAhead) {
ScanLine = ScanLineAhead;
ScanLineAhead = tmp;
} else {
- ScaleLineAvg16(ScanLine, Source, SrcWidth, TgtWidth);
+ ScaleLineAvg16(ScanLine, Source, SourceRect->right - SourceRect->left, DestRect->right - DestRect->left);
} /* if */
PrevSource = Source;
} /* if */
-
- if (E >= Mid && PrevSourceAhead != (PIXEL *)((BYTE *)Source + srcPitch)) {
+
+ if (E >= Mid && PrevSourceAhead != (PIXEL *)((BYTE *)Source + SourceSurf->lDelta)) {
int x;
- ScaleLineAvg16(ScanLineAhead, (PIXEL *)((BYTE *)Source + srcPitch), SrcWidth, TgtWidth);
- for (x = 0; x < TgtWidth; x++)
+ ScaleLineAvg16(ScanLineAhead, (PIXEL *)((BYTE *)Source + SourceSurf->lDelta), SourceRect->right - SourceRect->left, DestRect->right - DestRect->left);
+ for (x = 0; x < DestRect->right - DestRect->left; x++)
ScanLine[x] = average16(ScanLine[x], ScanLineAhead[x]);
- PrevSourceAhead = (PIXEL *)((BYTE *)Source + srcPitch);
+ PrevSourceAhead = (PIXEL *)((BYTE *)Source + SourceSurf->lDelta);
} /* if */
-
- memcpy(Target, ScanLine, TgtWidth*sizeof(PIXEL));
- Target = (PIXEL *)((BYTE *)Target + dstPitch);
+
+ if (! FinalCopy16(Target, ScanLine, ClipSpans, ClipSpansCount, &SpanIndex, DestY, DestRect))
+ {
+ /* No more spans, everything else is clipped away, we're done */
+ ExFreePool(ClipSpans);
+ ExFreePool(ScanLine);
+ ExFreePool(ScanLineAhead);
+ return TRUE;
+ }
+ DestY++;
+ Target = (PIXEL *)((BYTE *)Target + DestSurf->lDelta);
Source += IntPart;
E += FractPart;
- if (E >= TgtHeight) {
- E -= TgtHeight;
- Source = (PIXEL *)((BYTE *)Source + srcPitch);
+ if (E >= DestRect->bottom - DestRect->top) {
+ E -= DestRect->bottom - DestRect->top;
+ Source = (PIXEL *)((BYTE *)Source + SourceSurf->lDelta);
} /* if */
} /* while */
if (skip > 0 && Source != PrevSource)
- ScaleLineAvg16(ScanLine, Source, SrcWidth, TgtWidth);
+ ScaleLineAvg16(ScanLine, Source, SourceRect->right - SourceRect->left, DestRect->right - DestRect->left);
while (skip-- > 0) {
- memcpy(Target, ScanLine, TgtWidth*sizeof(PIXEL));
- Target = (PIXEL *)((BYTE *)Target + dstPitch);
+ if (! FinalCopy16(Target, ScanLine, ClipSpans, ClipSpansCount, &SpanIndex, DestY, DestRect))
+ {
+ /* No more spans, everything else is clipped away, we're done */
+ ExFreePool(ClipSpans);
+ ExFreePool(ScanLine);
+ ExFreePool(ScanLineAhead);
+ return TRUE;
+ }
+ DestY++;
+ Target = (PIXEL *)((BYTE *)Target + DestSurf->lDelta);
} /* while */
+ ExFreePool(ClipSpans);
ExFreePool(ScanLine);
ExFreePool(ScanLineAhead);
+
+ return TRUE;
}
+/* check clib region */
+BOOLEAN CheckClipRegion(CLIPOBJ *ClipRegion, RECTL* DestRect, int DesX, int DesY)
+{
+ BOOLEAN status = FALSE;
+ PSPAN ClipSpans;
+ UINT ClipSpansCount;
+ UINT SpanIndex = 0;
+
+ if (! ClipobjToSpans(&ClipSpans, &ClipSpansCount, ClipRegion, DestRect))
+ {
+ return FALSE;
+ }
+
+ if (0 == ClipSpansCount)
+ {
+ /* No clip spans == empty clipping region, everything clipped away */
+ ASSERT(NULL == ClipSpans);
+ return FALSE;
+ }
+
+ for (SpanIndex=0; SpanIndex<ClipSpansCount;SpanIndex++)
+ {
+ if (ClipSpans[SpanIndex].Y < DesY)
+ status = FALSE;
+
+ if (ClipSpans[SpanIndex].Y+ClipSpans[SpanIndex].Height > DesY)
+ status = FALSE;
+
+ if (ClipSpans[SpanIndex].X > DesX)
+ status = FALSE;
+
+ if (ClipSpans[SpanIndex].X+ClipSpans[SpanIndex].Width > DesX)
+ status = FALSE;
+ }
+
+ return status;
+}
+
+
//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
BOOLEAN DIB_16BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
- SURFGDI *DestGDI, SURFGDI *SourceGDI,
- RECTL* DestRect, RECTL *SourceRect,
- POINTL* MaskOrigin, POINTL* BrushOrigin,
- XLATEOBJ *ColorTranslation, ULONG Mode)
+ RECTL* DestRect, RECTL *SourceRect,
+ POINTL* MaskOrigin, POINTL BrushOrigin,
+ CLIPOBJ *ClipRegion, XLATEOBJ *ColorTranslation,
+ ULONG Mode)
{
- BYTE *SourceLine, *DestLine;
+ int SrcSizeY;
+ int SrcSizeX;
+ int DesSizeY;
+ int DesSizeX;
+ int sx;
+ int sy;
+ int DesX;
+ int DesY;
+ int color;
+ PULONG DestBits;
+
- DbgPrint("DIB_16BPP_StretchBlt: Source BPP: %u, srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
- SourceGDI->BitsPerPixel, SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
+ DPRINT("DIB_16BPP_StretchBlt: Source BPP: %u, srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
+ BitsPerFormat(SourceSurf->iBitmapFormat), SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
- switch(SourceGDI->BitsPerPixel)
- {
- case 1:
- return FALSE;
- break;
-
- case 4:
- return FALSE;
- break;
+ SrcSizeY = SourceRect->bottom - SourceRect->top;
+ SrcSizeX = SourceRect->right - SourceRect->left;
- case 8:
- return FALSE;
- break;
-
- case 16:
- SourceLine = SourceSurf->pvScan0 + (SourceRect->top * SourceSurf->lDelta) + 2 * SourceRect->left;
- DestLine = DestSurf->pvScan0 + (DestRect->top * DestSurf->lDelta) + 2 * DestRect->left;
-
- ScaleRectAvg16((PIXEL *)DestLine, (PIXEL *)SourceLine,
- SourceRect->right-SourceRect->left, SourceRect->bottom-SourceRect->top,
- DestRect->right-DestRect->left, DestRect->bottom-DestRect->top, SourceSurf->lDelta, DestSurf->lDelta);
- break;
-
- case 24:
- return FALSE;
- break;
+ DesSizeY = DestRect->bottom - DestRect->top;
+ DesSizeX = DestRect->right - DestRect->left;
- case 32:
- return FALSE;
- break;
+ switch(SourceSurf->iBitmapFormat)
+ {
+ case BMF_1BPP:
+ /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
+ /* This is a reference implementation, it hasn't been optimized for speed */
+
+ DestBits = (PULONG)((PBYTE)DestSurf->pvScan0 + (DestRect->left << 1) +
+ DestRect->top * DestSurf->lDelta);
+
+ for (DesY=0; DesY<DesSizeY; DesY++)
+ {
+ sy = ((DesY * SrcSizeY) / DesSizeY) + SourceRect->top;
+
+ for (DesX=0; DesX<DesSizeX; DesX++)
+ {
+
+ sx = ((DesX * SrcSizeX) / DesSizeX) + SourceRect->left;
+
+ if(DIB_1BPP_GetPixel(SourceSurf, sx, sy) == 0)
+ {
+ *DestBits = XLATEOBJ_iXlate(ColorTranslation, 0);
+ DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ }
+ else
+ {
+ *DestBits = XLATEOBJ_iXlate(ColorTranslation, 1);
+ DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ }
+ }
+ DestBits = (PULONG)((ULONG_PTR)DestBits - (DesSizeX << 1) + DestSurf->lDelta);
+ }
+ break;
+
+ case BMF_4BPP:
+ /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
+ /* This is a reference implementation, it hasn't been optimized for speed */
+
+ DestBits = (PULONG)((PBYTE)DestSurf->pvScan0 + (DestRect->left << 1) +
+ DestRect->top * DestSurf->lDelta);
+
+ for (DesY=0; DesY<DesSizeY; DesY++)
+ {
+ sy = ((DesY * SrcSizeY) / DesSizeY) + SourceRect->top;
+
+ for (DesX=0; DesX<DesSizeX; DesX++)
+ {
+
+ sx = ((DesX * SrcSizeX) / DesSizeX) + SourceRect->left;
+ color = DIB_4BPP_GetPixel(SourceSurf, sx, sy);
+
+ *DestBits = XLATEOBJ_iXlate(ColorTranslation, color);
+ DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ }
+ DestBits = (PULONG)((ULONG_PTR)DestBits - (DesSizeX << 1) + DestSurf->lDelta);
+ }
+ break;
+
+ case BMF_8BPP:
+ /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
+ /* This is a reference implementation, it hasn't been optimized for speed */
+
+ DestBits = (PULONG)((PBYTE)DestSurf->pvScan0 + (DestRect->left << 1) +
+ DestRect->top * DestSurf->lDelta);
+
+ for (DesY=0; DesY<DesSizeY; DesY++)
+ {
+ sy = ((DesY * SrcSizeY) / DesSizeY) + SourceRect->top;
+
+ for (DesX=0; DesX<DesSizeX; DesX++)
+ {
+
+ sx = ((DesX * SrcSizeX) / DesSizeX) + SourceRect->left;
+ color = DIB_8BPP_GetPixel(SourceSurf, sx, sy);
+
+ *DestBits = XLATEOBJ_iXlate(ColorTranslation, color);
+ DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ }
+ DestBits = (PULONG)((ULONG_PTR)DestBits - (DesSizeX << 1) + DestSurf->lDelta);
+ }
+ break;
+
+
+ case BMF_24BPP:
+ /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
+ /* This is a reference implementation, it hasn't been optimized for speed */
+
+ DestBits = (PULONG)((PBYTE)DestSurf->pvScan0 + (DestRect->left << 1) +
+ DestRect->top * DestSurf->lDelta);
+
+ for (DesY=0; DesY<DesSizeY; DesY++)
+ {
+ sy = ((DesY * SrcSizeY) / DesSizeY) + SourceRect->top;
+
+ for (DesX=0; DesX<DesSizeX; DesX++)
+ {
+
+ sx = ((DesX * SrcSizeX) / DesSizeX) + SourceRect->left;
+ color = DIB_24BPP_GetPixel(SourceSurf, sx, sy);
+
+ *DestBits = XLATEOBJ_iXlate(ColorTranslation, color);
+ DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ }
+ DestBits = (PULONG)((ULONG_PTR)DestBits - (DesSizeX << 1) + DestSurf->lDelta);
+ } break;
+
+ case BMF_32BPP:
+ /* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
+ /* This is a reference implementation, it hasn't been optimized for speed */
+
+ DestBits = (PULONG)((PBYTE)DestSurf->pvScan0 + (DestRect->left << 1) +
+ DestRect->top * DestSurf->lDelta);
+
+ for (DesY=0; DesY<DesSizeY; DesY++)
+ {
+ sy = ((DesY * SrcSizeY) / DesSizeY) + SourceRect->top;
+
+ for (DesX=0; DesX<DesSizeX; DesX++)
+ {
+
+ sx = ((DesX * SrcSizeX) / DesSizeX) + SourceRect->left;
+ color = DIB_32BPP_GetPixel(SourceSurf, sx, sy);
+
+ *DestBits = XLATEOBJ_iXlate(ColorTranslation, color);
+ DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ }
+ DestBits = (PULONG)((ULONG_PTR)DestBits - (DesSizeX << 1) + DestSurf->lDelta);
+ }
+ break;
+
+ case BMF_16BPP:
+ return ScaleRectAvg16(DestSurf, SourceSurf, DestRect, SourceRect, MaskOrigin, BrushOrigin,
+ ClipRegion, ColorTranslation, Mode);
+ break;
+
default:
- DbgPrint("DIB_16BPP_StretchBlt: Unhandled Source BPP: %u\n", SourceGDI->BitsPerPixel);
+ DPRINT1("DIB_16BPP_StretchBlt: Unhandled Source BPP: %u\n", BitsPerFormat(SourceSurf->iBitmapFormat));
return FALSE;
}
-
-
+
+
+ return TRUE;
+}
+
+BOOLEAN
+DIB_16BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
+ RECTL* DestRect, POINTL *SourcePoint,
+ XLATEOBJ *ColorTranslation, ULONG iTransColor)
+{
+ ULONG RoundedRight, X, Y, SourceX, SourceY, Source, wd, Dest;
+ ULONG *DestBits;
+
+ RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x1);
+ SourceY = SourcePoint->y;
+ DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 +
+ (DestRect->left << 1) +
+ DestRect->top * DestSurf->lDelta);
+ wd = DestSurf->lDelta - ((DestRect->right - DestRect->left) << 1);
+
+ for(Y = DestRect->top; Y < DestRect->bottom; Y++)
+ {
+ SourceX = SourcePoint->x;
+ for(X = DestRect->left; X < RoundedRight; X += 2, DestBits++, SourceX += 2)
+ {
+ Dest = *DestBits;
+
+ Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
+ if(Source != iTransColor)
+ {
+ Dest &= 0xFFFF0000;
+ Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFFFF);
+ }
+
+ Source = DIB_GetSourceIndex(SourceSurf, SourceX + 1, SourceY);
+ if(Source != iTransColor)
+ {
+ Dest &= 0xFFFF;
+ Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) << 16);
+ }
+
+ *DestBits = Dest;
+ }
+
+ if(X < DestRect->right)
+ {
+ Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
+ if(Source != iTransColor)
+ {
+ *((USHORT*)DestBits) = (USHORT)XLATEOBJ_iXlate(ColorTranslation, Source);
+ }
+
+ DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
+ }
+ SourceY++;
+ DestBits = (ULONG*)((ULONG_PTR)DestBits + wd);
+ }
+
return TRUE;
}
+typedef union {
+ ULONG ul;
+ struct {
+ UCHAR red;
+ UCHAR green;
+ UCHAR blue;
+ UCHAR alpha;
+ } col;
+} NICEPIXEL32;
+
+typedef union {
+ USHORT us;
+ struct {
+ USHORT red:5,
+ green:6,
+ blue:5;
+ } col;
+} NICEPIXEL16;
+
+STATIC inline UCHAR
+Clamp5(ULONG val)
+{
+ return (val > 31) ? 31 : val;
+}
+
+STATIC inline UCHAR
+Clamp6(ULONG val)
+{
+ return (val > 63) ? 63 : val;
+}
+
+BOOLEAN
+DIB_16BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
+ RECTL* SourceRect, CLIPOBJ* ClipRegion,
+ XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
+{
+ INT Rows, Cols, SrcX, SrcY;
+ register PUSHORT Dst;
+ ULONG DstDelta;
+ BLENDFUNCTION BlendFunc;
+ register NICEPIXEL16 DstPixel;
+ register NICEPIXEL32 SrcPixel;
+ UCHAR Alpha, SrcBpp;
+
+ DPRINT("DIB_16BPP_AlphaBlend: srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
+ SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
+ DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
+
+ ASSERT(DestRect->bottom - DestRect->top == SourceRect->bottom - SourceRect->top &&
+ DestRect->right - DestRect->left == SourceRect->right - SourceRect->left);
+
+ BlendFunc = BlendObj->BlendFunction;
+ if (BlendFunc.BlendOp != AC_SRC_OVER)
+ {
+ DPRINT1("BlendOp != AC_SRC_OVER\n");
+ return FALSE;
+ }
+ if (BlendFunc.BlendFlags != 0)
+ {
+ DPRINT1("BlendFlags != 0\n");
+ return FALSE;
+ }
+ if ((BlendFunc.AlphaFormat & ~AC_SRC_ALPHA) != 0)
+ {
+ DPRINT1("Unsupported AlphaFormat (0x%x)\n", BlendFunc.AlphaFormat);
+ return FALSE;
+ }
+ if ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0 &&
+ BitsPerFormat(Source->iBitmapFormat) != 32)
+ {
+ DPRINT1("Source bitmap must be 32bpp when AC_SRC_ALPHA is set\n");
+ return FALSE;
+ }
+
+ Dst = (PUSHORT)((ULONG_PTR)Dest->pvScan0 + (DestRect->top * Dest->lDelta) +
+ (DestRect->left << 1));
+ DstDelta = Dest->lDelta - ((DestRect->right - DestRect->left) << 1);
+ SrcBpp = BitsPerFormat(Source->iBitmapFormat);
+
+ Rows = DestRect->bottom - DestRect->top;
+ SrcY = SourceRect->top;
+ while (--Rows >= 0)
+ {
+ Cols = DestRect->right - DestRect->left;
+ SrcX = SourceRect->left;
+ while (--Cols >= 0)
+ {
+ if (SrcBpp <= 16)
+ {
+ DstPixel.us = DIB_GetSource(Source, SrcX++, SrcY, ColorTranslation);
+ SrcPixel.col.red = (DstPixel.col.red << 3) | (DstPixel.col.red >> 2);
+ SrcPixel.col.green = (DstPixel.col.green << 2) | (DstPixel.col.green >> 4);
+ SrcPixel.col.blue = (DstPixel.col.blue << 3) | (DstPixel.col.blue >> 2);
+ }
+ else
+ {
+ SrcPixel.ul = DIB_GetSourceIndex(Source, SrcX++, SrcY);
+ }
+ SrcPixel.col.red = SrcPixel.col.red * BlendFunc.SourceConstantAlpha / 255;
+ SrcPixel.col.green = SrcPixel.col.green * BlendFunc.SourceConstantAlpha / 255;
+ SrcPixel.col.blue = SrcPixel.col.blue * BlendFunc.SourceConstantAlpha / 255;
+ SrcPixel.col.alpha = (SrcBpp == 32) ? (SrcPixel.col.alpha * BlendFunc.SourceConstantAlpha / 255) : BlendFunc.SourceConstantAlpha;
+
+ Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
+ SrcPixel.col.alpha : BlendFunc.SourceConstantAlpha;
+
+ DstPixel.us = *Dst;
+ DstPixel.col.red = Clamp5(DstPixel.col.red * (255 - Alpha) / 255 + (SrcPixel.col.red >> 3));
+ DstPixel.col.green = Clamp6(DstPixel.col.green * (255 - Alpha) / 255 + (SrcPixel.col.green >> 2));
+ DstPixel.col.blue = Clamp5(DstPixel.col.blue * (255 - Alpha) / 255 + (SrcPixel.col.blue >> 3));
+ *Dst++ = DstPixel.us;
+ }
+ Dst = (PUSHORT)((ULONG_PTR)Dst + DstDelta);
+ SrcY++;
+ }
+
+ return TRUE;
+}
+
/* EOF */
projects / reactos.git / blobdiff