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722 lines
21 KiB
C
722 lines
21 KiB
C
/*
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* PROJECT: Win32 subsystem
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* LICENSE: See COPYING in the top level directory
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* FILE: win32ss/gdi/dib/dib16bpp.c
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* PURPOSE: Device Independant Bitmap functions, 16bpp
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* PROGRAMMERS: Jason Filby
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* Thomas Bluemel
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* Gregor Anich
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*/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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VOID
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DIB_16BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
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{
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PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
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PWORD addr = (PWORD)byteaddr + x;
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*addr = (WORD)c;
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}
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ULONG
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DIB_16BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
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{
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PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
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PWORD addr = (PWORD)byteaddr + x;
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return (ULONG)(*addr);
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}
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VOID
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DIB_16BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
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{
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PDWORD addr = (PDWORD)((PWORD)((PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta) + x1);
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#if defined(_M_IX86) && !defined(_MSC_VER)
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/* This is about 10% faster than the generic C code below */
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LONG Count = x2 - x1;
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__asm__ __volatile__ (
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" cld\n"
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" mov %0, %%eax\n"
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" shl $16, %%eax\n"
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" andl $0xffff, %0\n" /* If the pixel value is "abcd", put "abcdabcd" in %eax */
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" or %0, %%eax\n"
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" mov %2, %%edi\n"
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" test $0x03, %%edi\n" /* Align to fullword boundary */
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" jz 0f\n"
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" stosw\n"
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" dec %1\n"
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" jz 1f\n"
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"0:\n"
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" mov %1,%%ecx\n" /* Setup count of fullwords to fill */
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" shr $1,%%ecx\n"
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" rep stosl\n" /* The actual fill */
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" test $0x01, %1\n" /* One left to do at the right side? */
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" jz 1f\n"
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" stosw\n"
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"1:\n"
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: /* no output */
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: "r"(c), "r"(Count), "m"(addr)
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: "%eax", "%ecx", "%edi");
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#else /* _M_IX86 */
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LONG cx = x1;
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DWORD cc;
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if (0 != (cx & 0x01))
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{
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*((PWORD) addr) = (WORD)c;
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cx++;
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addr = (PDWORD)((PWORD)(addr) + 1);
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}
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cc = ((c & 0xffff) << 16) | (c & 0xffff);
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while(cx + 1 < x2)
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{
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*addr++ = cc;
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cx += 2;
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}
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if (cx < x2)
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{
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*((PWORD) addr) = (WORD)c;
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}
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#endif /* _M_IX86 */
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}
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VOID
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DIB_16BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
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{
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#if defined(_M_IX86) && !defined(_MSC_VER)
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asm volatile(
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" testl %2, %2" "\n\t"
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" jle 2f" "\n\t"
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" movl %2, %%ecx" "\n\t"
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" shrl $2, %2" "\n\t"
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" andl $3, %%ecx" "\n\t"
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" jz 1f" "\n\t"
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"0:" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" decl %%ecx" "\n\t"
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" jnz 0b" "\n\t"
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" testl %2, %2" "\n\t"
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" jz 2f" "\n\t"
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"1:" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" movw %%ax, (%0)" "\n\t"
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" addl %1, %0" "\n\t"
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" decl %2" "\n\t"
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" jnz 1b" "\n\t"
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"2:" "\n\t"
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: /* no output */
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: "r"((PBYTE)SurfObj->pvScan0 + (y1 * SurfObj->lDelta) + (x * sizeof (WORD))),
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"r"(SurfObj->lDelta), "r"(y2 - y1), "a"(c)
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: "cc", "memory", "%ecx");
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#else
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PBYTE byteaddr = (PBYTE)(ULONG_PTR)SurfObj->pvScan0 + y1 * SurfObj->lDelta;
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PWORD addr = (PWORD)byteaddr + x;
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LONG lDelta = SurfObj->lDelta;
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byteaddr = (PBYTE)addr;
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while(y1++ < y2)
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{
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*addr = (WORD)c;
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byteaddr += lDelta;
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addr = (PWORD)byteaddr;
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}
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#endif
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}
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BOOLEAN
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DIB_16BPP_BitBltSrcCopy(PBLTINFO BltInfo)
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{
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LONG i, j, sx, sy, xColor, f1;
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PBYTE SourceBits, DestBits, SourceLine, DestLine;
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PBYTE SourceBits_4BPP, SourceLine_4BPP;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + 2 * BltInfo->DestRect.left;
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switch(BltInfo->SourceSurface->iBitmapFormat)
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{
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case BMF_1BPP:
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sx = BltInfo->SourcePoint.x;
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sy = BltInfo->SourcePoint.y;
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for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
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{
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sx = BltInfo->SourcePoint.x;
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for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
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{
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if(DIB_1BPP_GetPixel(BltInfo->SourceSurface, sx, sy) == 0)
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{
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DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j,
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XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
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}
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else
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{
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DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j,
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XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 1));
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}
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sx++;
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}
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sy++;
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}
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break;
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case BMF_4BPP:
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SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
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(BltInfo->SourcePoint.x >> 1);
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for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
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{
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SourceLine_4BPP = SourceBits_4BPP;
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sx = BltInfo->SourcePoint.x;
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f1 = sx & 1;
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for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
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{
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xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest,
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(*SourceLine_4BPP & altnotmask[f1]) >> (4 * (1 - f1)));
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DIB_16BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
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if(f1 == 1)
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{
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SourceLine_4BPP++;
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f1 = 0;
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}
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else
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{
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f1 = 1;
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}
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sx++;
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}
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SourceBits_4BPP += BltInfo->SourceSurface->lDelta;
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}
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break;
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case BMF_8BPP:
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
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BltInfo->SourcePoint.x;
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DestLine = DestBits;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest, *SourceBits);
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SourceBits += 1;
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DestBits += 2;
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}
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SourceLine += BltInfo->SourceSurface->lDelta;
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DestLine += BltInfo->DestSurface->lDelta;
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}
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break;
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case BMF_16BPP:
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if (NULL == BltInfo->XlateSourceToDest || 0 !=
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(BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL))
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{
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if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
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{
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y *
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BltInfo->SourceSurface->lDelta) + 2 *
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BltInfo->SourcePoint.x;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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RtlMoveMemory(DestBits, SourceBits,
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2 * (BltInfo->DestRect.right -
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BltInfo->DestRect.left));
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SourceBits += BltInfo->SourceSurface->lDelta;
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DestBits += BltInfo->DestSurface->lDelta;
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}
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}
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else
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{
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom -
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BltInfo->DestRect.top - 1) *
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BltInfo->SourceSurface->lDelta) + 2 *
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BltInfo->SourcePoint.x;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 +
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((BltInfo->DestRect.bottom - 1) *
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BltInfo->DestSurface->lDelta) + 2 *
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BltInfo->DestRect.left;
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for (j = BltInfo->DestRect.bottom - 1;
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BltInfo->DestRect.top <= j; j--)
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{
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RtlMoveMemory(DestBits, SourceBits, 2 *
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(BltInfo->DestRect.right -
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BltInfo->DestRect.left));
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SourceBits -= BltInfo->SourceSurface->lDelta;
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DestBits -= BltInfo->DestSurface->lDelta;
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}
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}
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}
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else
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{
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if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
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{
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y *
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BltInfo->SourceSurface->lDelta) + 2 *
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BltInfo->SourcePoint.x;
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DestLine = DestBits;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i <
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BltInfo->DestRect.right; i++)
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{
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest,
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*((WORD *)SourceBits));
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SourceBits += 2;
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DestBits += 2;
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}
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SourceLine += BltInfo->SourceSurface->lDelta;
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DestLine += BltInfo->DestSurface->lDelta;
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}
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}
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else
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{
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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((BltInfo->SourcePoint.y +
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BltInfo->DestRect.bottom -
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BltInfo->DestRect.top - 1) *
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BltInfo->SourceSurface->lDelta) + 2 *
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BltInfo->SourcePoint.x;
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DestLine = (PBYTE)BltInfo->DestSurface->pvScan0 +
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((BltInfo->DestRect.bottom - 1) *
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BltInfo->DestSurface->lDelta) + 2 *
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BltInfo->DestRect.left;
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for (j = BltInfo->DestRect.bottom - 1;
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BltInfo->DestRect.top <= j; j--)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i <
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BltInfo->DestRect.right; i++)
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{
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest,
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*((WORD *)SourceBits));
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SourceBits += 2;
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DestBits += 2;
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}
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SourceLine -= BltInfo->SourceSurface->lDelta;
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DestLine -= BltInfo->DestSurface->lDelta;
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}
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}
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}
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break;
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case BMF_24BPP:
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
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3 * BltInfo->SourcePoint.x;
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DestLine = DestBits;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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xColor = (*(SourceBits + 2) << 0x10) +
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(*(SourceBits + 1) << 0x08) + (*(SourceBits));
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest, xColor);
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SourceBits += 3;
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DestBits += 2;
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}
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SourceLine += BltInfo->SourceSurface->lDelta;
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DestLine += BltInfo->DestSurface->lDelta;
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}
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break;
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case BMF_32BPP:
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 +
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(BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) +
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4 * BltInfo->SourcePoint.x;
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DestLine = DestBits;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
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BltInfo->XlateSourceToDest,
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*((PDWORD) SourceBits));
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SourceBits += 4;
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DestBits += 2;
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}
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SourceLine += BltInfo->SourceSurface->lDelta;
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DestLine += BltInfo->DestSurface->lDelta;
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}
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break;
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default:
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DPRINT1("DIB_16BPP_Bitblt: Unhandled Source BPP: %u\n",
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BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
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return FALSE;
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}
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return TRUE;
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}
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/* Optimize for bitBlt */
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BOOLEAN
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DIB_16BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
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{
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LONG DestY;
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#if defined(_M_IX86) && !defined(_MSC_VER)
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/* This is about 10% faster than the generic C code below */
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ULONG delta = DestSurface->lDelta;
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ULONG width = (DestRect->right - DestRect->left) ;
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PULONG pos = (PULONG) ((PBYTE)DestSurface->pvScan0 + DestRect->top * delta + (DestRect->left<<1));
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color = (color&0xffff); /* If the color value is "abcd", put "abcdabcd" into color */
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color += (color<<16);
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for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
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{
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__asm__ __volatile__ (
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"cld\n\t"
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"mov %1,%%ebx\n\t"
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"mov %2,%%edi\n\t"
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"test $0x03, %%edi\n\t" /* Align to fullword boundary */
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"jz 1f\n\t"
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"stosw\n\t"
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"dec %%ebx\n\t"
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"jz 2f\n"
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"1:\n\t"
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"mov %%ebx,%%ecx\n\t" /* Setup count of fullwords to fill */
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"shr $1,%%ecx\n\t"
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"rep stosl\n\t" /* The actual fill */
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"test $0x01, %%ebx\n\t" /* One left to do at the right side? */
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"jz 2f\n\t"
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"stosw\n"
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"2:"
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:
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: "a" (color), "r" (width), "m" (pos)
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: "%ecx", "%ebx", "%edi");
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pos =(PULONG)((ULONG_PTR)pos + delta);
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}
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#else /* _M_IX86 */
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for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
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{
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DIB_16BPP_HLine (DestSurface, DestRect->left, DestRect->right, DestY, color);
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}
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#endif
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return TRUE;
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}
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BOOLEAN
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DIB_16BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
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RECTL* DestRect, RECTL *SourceRect,
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XLATEOBJ *ColorTranslation, ULONG iTransColor)
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{
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LONG RoundedRight, X, Y, SourceX = 0, SourceY = 0, wd;
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ULONG *DestBits, Source, Dest;
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LONG DstHeight;
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LONG DstWidth;
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LONG SrcHeight;
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LONG SrcWidth;
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DstHeight = DestRect->bottom - DestRect->top;
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DstWidth = DestRect->right - DestRect->left;
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SrcHeight = SourceRect->bottom - SourceRect->top;
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SrcWidth = SourceRect->right - SourceRect->left;
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RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x1);
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DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 +
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(DestRect->left << 1) +
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DestRect->top * DestSurf->lDelta);
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wd = DestSurf->lDelta - ((DestRect->right - DestRect->left) << 1);
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for(Y = DestRect->top; Y < DestRect->bottom; Y++)
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{
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SourceY = SourceRect->top+(Y - DestRect->top) * SrcHeight / DstHeight;
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for(X = DestRect->left; X < RoundedRight; X += 2, DestBits++, SourceX += 2)
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{
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Dest = *DestBits;
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SourceX = SourceRect->left+(X - DestRect->left) * SrcWidth / DstWidth;
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if (SourceX >= 0 && SourceY >= 0 &&
|
|
SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
|
|
{
|
|
Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
|
|
if(Source != iTransColor)
|
|
{
|
|
Dest &= 0xFFFF0000;
|
|
Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFFFF);
|
|
}
|
|
}
|
|
|
|
SourceX = SourceRect->left+(X+1 - DestRect->left) * SrcWidth / DstWidth;
|
|
if (SourceX >= 0 && SourceY >= 0 &&
|
|
SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
|
|
{
|
|
Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
|
|
if(Source != iTransColor)
|
|
{
|
|
Dest &= 0xFFFF;
|
|
Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) << 16);
|
|
}
|
|
}
|
|
|
|
*DestBits = Dest;
|
|
}
|
|
|
|
if(X < DestRect->right)
|
|
{
|
|
SourceX = SourceRect->left+(X - DestRect->left) * SrcWidth / DstWidth;
|
|
if (SourceX >= 0 && SourceY >= 0 &&
|
|
SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
|
|
{
|
|
Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
|
|
if(Source != iTransColor)
|
|
{
|
|
*((USHORT*)DestBits) = (USHORT)XLATEOBJ_iXlate(ColorTranslation,
|
|
Source);
|
|
}
|
|
}
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + 2);
|
|
}
|
|
|
|
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 blue :5;
|
|
USHORT green :6;
|
|
USHORT red :5;
|
|
} col;
|
|
} NICEPIXEL16_565;
|
|
|
|
typedef union
|
|
{
|
|
USHORT us;
|
|
struct
|
|
{
|
|
USHORT blue :5;
|
|
USHORT green :5;
|
|
USHORT red :5;
|
|
USHORT xxxx :1;
|
|
} col;
|
|
} NICEPIXEL16_555;
|
|
|
|
static __inline UCHAR
|
|
Clamp6(ULONG val)
|
|
{
|
|
return (val > 63) ? 63 : (UCHAR)val;
|
|
}
|
|
|
|
static __inline UCHAR
|
|
Clamp5(ULONG val)
|
|
{
|
|
return (val > 31) ? 31 : (UCHAR)val;
|
|
}
|
|
|
|
BOOLEAN
|
|
DIB_16BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
|
|
RECTL* SourceRect, CLIPOBJ* ClipRegion,
|
|
XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
|
|
{
|
|
INT DstX, DstY, SrcX, SrcY;
|
|
BLENDFUNCTION BlendFunc;
|
|
NICEPIXEL32 SrcPixel32;
|
|
UCHAR Alpha;
|
|
EXLATEOBJ* pexlo;
|
|
EXLATEOBJ exloSrcRGB;
|
|
|
|
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);
|
|
|
|
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;
|
|
}
|
|
|
|
if (!ColorTranslation)
|
|
{
|
|
DPRINT1("ColorTranslation must not be NULL!\n");
|
|
return FALSE;
|
|
}
|
|
|
|
pexlo = CONTAINING_RECORD(ColorTranslation, EXLATEOBJ, xlo);
|
|
EXLATEOBJ_vInitialize(&exloSrcRGB, pexlo->ppalSrc, &gpalRGB, 0, 0, 0);
|
|
|
|
if (pexlo->ppalDst->flFlags & PAL_RGB16_555)
|
|
{
|
|
NICEPIXEL16_555 DstPixel16;
|
|
|
|
SrcY = SourceRect->top;
|
|
DstY = DestRect->top;
|
|
while ( DstY < DestRect->bottom )
|
|
{
|
|
SrcX = SourceRect->left;
|
|
DstX = DestRect->left;
|
|
while(DstX < DestRect->right)
|
|
{
|
|
SrcPixel32.ul = DIB_GetSource(Source, SrcX, SrcY, &exloSrcRGB.xlo);
|
|
SrcPixel32.col.red = (SrcPixel32.col.red * BlendFunc.SourceConstantAlpha) / 255;
|
|
SrcPixel32.col.green = (SrcPixel32.col.green * BlendFunc.SourceConstantAlpha) / 255;
|
|
SrcPixel32.col.blue = (SrcPixel32.col.blue * BlendFunc.SourceConstantAlpha) / 255;
|
|
|
|
Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
|
|
(SrcPixel32.col.alpha * BlendFunc.SourceConstantAlpha) / 255 :
|
|
BlendFunc.SourceConstantAlpha;
|
|
|
|
Alpha >>= 3;
|
|
|
|
DstPixel16.us = DIB_16BPP_GetPixel(Dest, DstX, DstY) & 0xFFFF;
|
|
/* Perform bit loss */
|
|
SrcPixel32.col.red >>= 3;
|
|
SrcPixel32.col.green >>= 3;
|
|
SrcPixel32.col.blue >>= 3;
|
|
|
|
/* Do the blend in the right bit depth */
|
|
DstPixel16.col.red = Clamp5((DstPixel16.col.red * (31 - Alpha)) / 31 + SrcPixel32.col.red);
|
|
DstPixel16.col.green = Clamp5((DstPixel16.col.green * (31 - Alpha)) / 31 + SrcPixel32.col.green);
|
|
DstPixel16.col.blue = Clamp5((DstPixel16.col.blue * (31 - Alpha)) / 31 + SrcPixel32.col.blue);
|
|
|
|
DIB_16BPP_PutPixel(Dest, DstX, DstY, DstPixel16.us);
|
|
|
|
DstX++;
|
|
SrcX = SourceRect->left + ((DstX-DestRect->left)*(SourceRect->right - SourceRect->left))
|
|
/(DestRect->right-DestRect->left);
|
|
}
|
|
DstY++;
|
|
SrcY = SourceRect->top + ((DstY-DestRect->top)*(SourceRect->bottom - SourceRect->top))
|
|
/(DestRect->bottom-DestRect->top);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
NICEPIXEL16_565 DstPixel16;
|
|
UCHAR Alpha6, Alpha5;
|
|
|
|
SrcY = SourceRect->top;
|
|
DstY = DestRect->top;
|
|
while ( DstY < DestRect->bottom )
|
|
{
|
|
SrcX = SourceRect->left;
|
|
DstX = DestRect->left;
|
|
while(DstX < DestRect->right)
|
|
{
|
|
SrcPixel32.ul = DIB_GetSource(Source, SrcX, SrcY, &exloSrcRGB.xlo);
|
|
SrcPixel32.col.red = (SrcPixel32.col.red * BlendFunc.SourceConstantAlpha) / 255;
|
|
SrcPixel32.col.green = (SrcPixel32.col.green * BlendFunc.SourceConstantAlpha) / 255;
|
|
SrcPixel32.col.blue = (SrcPixel32.col.blue * BlendFunc.SourceConstantAlpha) / 255;
|
|
|
|
Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
|
|
(SrcPixel32.col.alpha * BlendFunc.SourceConstantAlpha) / 255 :
|
|
BlendFunc.SourceConstantAlpha;
|
|
|
|
Alpha6 = Alpha >> 2;
|
|
Alpha5 = Alpha >> 3;
|
|
|
|
DstPixel16.us = DIB_16BPP_GetPixel(Dest, DstX, DstY) & 0xFFFF;
|
|
/* Perform bit loss */
|
|
SrcPixel32.col.red >>= 3;
|
|
SrcPixel32.col.green >>= 2;
|
|
SrcPixel32.col.blue >>= 3;
|
|
|
|
/* Do the blend in the right bit depth */
|
|
DstPixel16.col.red = Clamp5((DstPixel16.col.red * (31 - Alpha5)) / 31 + SrcPixel32.col.red);
|
|
DstPixel16.col.green = Clamp6((DstPixel16.col.green * (63 - Alpha6)) / 63 + SrcPixel32.col.green);
|
|
DstPixel16.col.blue = Clamp5((DstPixel16.col.blue * (31 - Alpha5)) / 31 + SrcPixel32.col.blue);
|
|
|
|
DIB_16BPP_PutPixel(Dest, DstX, DstY, DstPixel16.us);
|
|
|
|
DstX++;
|
|
SrcX = SourceRect->left + ((DstX-DestRect->left)*(SourceRect->right - SourceRect->left))
|
|
/(DestRect->right-DestRect->left);
|
|
}
|
|
DstY++;
|
|
SrcY = SourceRect->top + ((DstY-DestRect->top)*(SourceRect->bottom - SourceRect->top))
|
|
/(DestRect->bottom-DestRect->top);
|
|
}
|
|
}
|
|
|
|
EXLATEOBJ_vCleanup(&exloSrcRGB);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* EOF */
|