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https://github.com/reactos/reactos.git
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421 lines
14 KiB
C
421 lines
14 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/dib32bpp.c
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* PURPOSE: Device Independant Bitmap functions, 32bpp
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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_32BPP_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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PDWORD addr = (PDWORD)byteaddr + x;
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*addr = c;
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}
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ULONG
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DIB_32BPP_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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PDWORD addr = (PDWORD)byteaddr + x;
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return (ULONG)(*addr);
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}
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VOID
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DIB_32BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
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{
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PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y1 * SurfObj->lDelta;
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PDWORD addr = (PDWORD)byteaddr + x;
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LONG lDelta = SurfObj->lDelta >> 2; // >> 2 == / sizeof(DWORD)
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byteaddr = (PBYTE)addr;
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while (y1++ < y2)
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{
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*addr = (DWORD)c;
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addr += lDelta;
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}
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}
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BOOLEAN
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DIB_32BPP_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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PDWORD Source32, Dest32;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0
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+ (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta)
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+ 4 * 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_32BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
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} else {
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DIB_32BPP_PutPixel(BltInfo->DestSurface, i, j, 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_32BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
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if (f1 == 1) {
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SourceLine_4BPP++;
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f1 = 0;
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} else {
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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 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 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;
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*((PDWORD) DestBits) = (DWORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
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SourceBits += 1;
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DestBits += 4;
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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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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 2 * 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 = *((PWORD) SourceBits);
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*((PDWORD) DestBits) = (DWORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
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SourceBits += 2;
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DestBits += 4;
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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_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) +
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(*(SourceBits));
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*((PDWORD)DestBits) = (DWORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
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SourceBits += 3;
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DestBits += 4;
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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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if (NULL == BltInfo->XlateSourceToDest ||
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0 != (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 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 4 * 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, 4 * (BltInfo->DestRect.right - 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
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+ BltInfo->DestRect.bottom
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- BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta)
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+ 4 * BltInfo->SourcePoint.x;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + 4 * BltInfo->DestRect.left;
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for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
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{
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RtlMoveMemory(DestBits, SourceBits, 4 * (BltInfo->DestRect.right - 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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SourceBits = ((PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 4 * 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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if (BltInfo->DestRect.left < BltInfo->SourcePoint.x)
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{
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Dest32 = (DWORD *) DestBits;
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Source32 = (DWORD *) SourceBits;
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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*Dest32++ = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *Source32++);
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}
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}
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else
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{
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Dest32 = (DWORD *) DestBits + (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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Source32 = (DWORD *) SourceBits + (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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for (i = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= i; i--)
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{
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*Dest32-- = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *Source32--);
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}
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}
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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 + ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta) + 4 * BltInfo->SourcePoint.x;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + 4 * BltInfo->DestRect.left;
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for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
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{
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if (BltInfo->DestRect.left < BltInfo->SourcePoint.x)
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{
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Dest32 = (DWORD *) DestBits;
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Source32 = (DWORD *) SourceBits;
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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*Dest32++ = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *Source32++);
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}
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}
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else
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{
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Dest32 = (DWORD *) DestBits + (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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Source32 = (DWORD *) SourceBits + (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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for (i = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= i; i--)
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{
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*Dest32-- = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *Source32--);
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}
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}
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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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break;
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default:
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DPRINT1("DIB_32BPP_Bitblt: Unhandled Source BPP: %u\n", 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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BOOLEAN
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DIB_32BPP_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 X, Y, SourceX, SourceY = 0, wd;
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ULONG *DestBits, Source = 0;
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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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DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 +
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(DestRect->left << 2) +
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DestRect->top * DestSurf->lDelta);
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wd = DestSurf->lDelta - ((DestRect->right - DestRect->left) << 2);
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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 < DestRect->right; X++, DestBits++)
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{
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SourceX = SourceRect->left+(X - DestRect->left) * SrcWidth / DstWidth;
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if (SourceX >= 0 && SourceY >= 0 &&
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SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
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{
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Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
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if ((0x00FFFFFF & Source) != (0x00FFFFFF & iTransColor))
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{
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*DestBits = XLATEOBJ_iXlate(ColorTranslation, Source);
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}
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}
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}
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DestBits = (ULONG*)((ULONG_PTR)DestBits + wd);
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}
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return TRUE;
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}
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typedef union {
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ULONG ul;
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struct {
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UCHAR red;
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UCHAR green;
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UCHAR blue;
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UCHAR alpha;
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} col;
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} NICEPIXEL32;
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static __inline UCHAR
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Clamp8(ULONG val)
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{
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return (val > 255) ? 255 : (UCHAR)val;
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}
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BOOLEAN
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DIB_32BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
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RECTL* SourceRect, CLIPOBJ* ClipRegion,
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XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
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{
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INT Rows, Cols, SrcX, SrcY;
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register PULONG Dst;
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BLENDFUNCTION BlendFunc;
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register NICEPIXEL32 DstPixel, SrcPixel;
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UCHAR Alpha, SrcBpp;
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DPRINT("DIB_32BPP_AlphaBlend: srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
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SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
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DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
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BlendFunc = BlendObj->BlendFunction;
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if (BlendFunc.BlendOp != AC_SRC_OVER)
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{
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DPRINT1("BlendOp != AC_SRC_OVER\n");
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return FALSE;
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}
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if (BlendFunc.BlendFlags != 0)
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{
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DPRINT1("BlendFlags != 0\n");
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return FALSE;
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}
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if ((BlendFunc.AlphaFormat & ~AC_SRC_ALPHA) != 0)
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{
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DPRINT1("Unsupported AlphaFormat (0x%x)\n", BlendFunc.AlphaFormat);
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return FALSE;
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}
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if ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0 &&
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BitsPerFormat(Source->iBitmapFormat) != 32)
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{
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DPRINT1("Source bitmap must be 32bpp when AC_SRC_ALPHA is set\n");
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return FALSE;
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}
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Dst = (PULONG)((ULONG_PTR)Dest->pvScan0 + (DestRect->top * Dest->lDelta) +
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(DestRect->left << 2));
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SrcBpp = BitsPerFormat(Source->iBitmapFormat);
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Rows = 0;
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SrcY = SourceRect->top;
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while (++Rows <= DestRect->bottom - DestRect->top)
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{
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Cols = 0;
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SrcX = SourceRect->left;
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while (++Cols <= DestRect->right - DestRect->left)
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{
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SrcPixel.ul = DIB_GetSource(Source, SrcX, SrcY, ColorTranslation);
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SrcPixel.col.red = (SrcPixel.col.red * BlendFunc.SourceConstantAlpha) / 255;
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SrcPixel.col.green = (SrcPixel.col.green * BlendFunc.SourceConstantAlpha) / 255;
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SrcPixel.col.blue = (SrcPixel.col.blue * BlendFunc.SourceConstantAlpha) / 255;
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SrcPixel.col.alpha = (32 == SrcBpp) ?
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(SrcPixel.col.alpha * BlendFunc.SourceConstantAlpha) / 255 :
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BlendFunc.SourceConstantAlpha ;
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Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
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SrcPixel.col.alpha : BlendFunc.SourceConstantAlpha ;
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DstPixel.ul = *Dst;
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DstPixel.col.red = Clamp8((DstPixel.col.red * (255 - Alpha)) / 255 + SrcPixel.col.red) ;
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DstPixel.col.green = Clamp8((DstPixel.col.green * (255 - Alpha)) / 255 + SrcPixel.col.green) ;
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DstPixel.col.blue = Clamp8((DstPixel.col.blue * (255 - Alpha)) / 255 + SrcPixel.col.blue) ;
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DstPixel.col.alpha = Clamp8((DstPixel.col.alpha * (255 - Alpha)) / 255 + SrcPixel.col.alpha) ;
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*Dst++ = DstPixel.ul;
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SrcX = SourceRect->left + (Cols*(SourceRect->right - SourceRect->left))/(DestRect->right - DestRect->left);
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}
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Dst = (PULONG)((ULONG_PTR)Dest->pvScan0 + ((DestRect->top + Rows) * Dest->lDelta) +
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(DestRect->left << 2));
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SrcY = SourceRect->top + (Rows*(SourceRect->bottom - SourceRect->top))/(DestRect->bottom - DestRect->top);
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}
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return TRUE;
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}
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/* EOF */
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