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805 lines
26 KiB
C
805 lines
26 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/dib24bpp.c
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* PURPOSE: Device Independant Bitmap functions, 24bpp
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* PROGRAMMERS: Jason Filby
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* Thomas Bluemel
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* Gregor Anich
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* Doug Lyons
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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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#define DEC_OR_INC(var, decTrue, amount) \
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((var) = (decTrue) ? ((var) - (amount)) : ((var) + (amount)))
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VOID
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DIB_24BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
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{
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PBYTE addr = (PBYTE)SurfObj->pvScan0 + (y * SurfObj->lDelta) + (x << 1) + x;
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*(PUSHORT)(addr) = c & 0xFFFF;
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*(addr + 2) = (c >> 16) & 0xFF;
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}
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ULONG
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DIB_24BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
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{
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PBYTE addr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + (x << 1) + x;
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return *(PUSHORT)(addr) + (*(addr + 2) << 16);
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}
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VOID
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DIB_24BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
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{
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PBYTE addr = (PBYTE)SurfObj->pvScan0 + y1 * SurfObj->lDelta + (x << 1) + x;
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LONG lDelta = SurfObj->lDelta;
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c &= 0xFFFFFF;
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while(y1++ < y2)
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{
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*(PUSHORT)(addr) = c & 0xFFFF;
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*(addr + 2) = (BYTE)(c >> 16);
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addr += lDelta;
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}
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}
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BOOLEAN
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DIB_24BPP_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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PWORD SourceBits_16BPP, SourceLine_16BPP;
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BOOLEAN bTopToBottom, bLeftToRight;
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DPRINT("DIB_24BPP_BitBltSrcCopy: SrcSurf cx/cy (%d/%d), DestSuft cx/cy (%d/%d) dstRect: (%d,%d)-(%d,%d)\n",
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BltInfo->SourceSurface->sizlBitmap.cx, BltInfo->SourceSurface->sizlBitmap.cy,
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BltInfo->DestSurface->sizlBitmap.cx, BltInfo->DestSurface->sizlBitmap.cy,
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BltInfo->DestRect.left, BltInfo->DestRect.top, BltInfo->DestRect.right, BltInfo->DestRect.bottom);
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/* Get back left to right flip here */
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bLeftToRight = (BltInfo->DestRect.left > BltInfo->DestRect.right);
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/* Check for top to bottom flip needed. */
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bTopToBottom = BltInfo->DestRect.top > BltInfo->DestRect.bottom;
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DPRINT("BltInfo->SourcePoint.x is '%d' and BltInfo->SourcePoint.y is '%d'.\n",
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BltInfo->SourcePoint.x, BltInfo->SourcePoint.y);
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/* Make WellOrdered by making top < bottom and left < right */
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RECTL_vMakeWellOrdered(&BltInfo->DestRect);
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + BltInfo->DestRect.left * 3;
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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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/* This sets sy to the top line */
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sy = BltInfo->SourcePoint.y;
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if (bTopToBottom)
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{
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/* This sets sy to the bottom line */
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sy += BltInfo->SourceSurface->lDelta * (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
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}
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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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if (bLeftToRight)
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{
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/* This sets sx to the rightmost pixel */
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sx += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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}
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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_24BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
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} else {
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DIB_24BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 1));
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}
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DEC_OR_INC(sx, bLeftToRight, 1);
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}
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DEC_OR_INC(sy, bTopToBottom, 1);
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}
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break;
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case BMF_4BPP:
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DPRINT("4BPP Case Selected with DestRect Width of '%d'.\n",
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BltInfo->DestRect.right - BltInfo->DestRect.left);
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/* This sets SourceBits_4BPP to the top line */
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SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + (BltInfo->SourcePoint.x >> 1);
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if (bTopToBottom)
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{
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/* This sets SourceBits_4BPP to the bottom line */
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SourceBits_4BPP += BltInfo->SourceSurface->lDelta * (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
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}
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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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DestLine = DestBits;
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sx = BltInfo->SourcePoint.x;
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if (bLeftToRight)
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{
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/* This sets sx to the rightmost pixel */
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sx += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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}
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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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*DestLine++ = xColor & 0xff;
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*(PWORD)DestLine = (WORD)(xColor >> 8);
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DestLine += 2;
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if(f1 == 1) {
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DEC_OR_INC(SourceLine_4BPP, bLeftToRight, 1);
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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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DEC_OR_INC(sx, bLeftToRight, 1);
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}
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DEC_OR_INC(SourceBits_4BPP, bTopToBottom, BltInfo->SourceSurface->lDelta);
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DestBits += BltInfo->DestSurface->lDelta;
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}
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break;
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case BMF_8BPP:
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DPRINT("8BPP Case Selected with DestRect Width of '%d'.\n",
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BltInfo->DestRect.right - BltInfo->DestRect.left);
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/* This sets SourceLine to the top line */
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + BltInfo->SourcePoint.x;
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if (bTopToBottom)
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{
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/* This sets SourceLine to the bottom line */
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SourceLine += BltInfo->SourceSurface->lDelta * (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
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}
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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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if (bLeftToRight)
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{
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/* This sets the SourceBits to the rightmost pixel */
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SourceBits += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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}
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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, *SourceBits);
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*DestBits = xColor & 0xff;
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*(PWORD)(DestBits + 1) = (WORD)(xColor >> 8);
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DEC_OR_INC(SourceBits, bLeftToRight, 1);
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DestBits += 3;
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}
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DEC_OR_INC(SourceLine, bTopToBottom, 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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DPRINT("16BPP Case Selected with DestRect Width of '%d'.\n",
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BltInfo->DestRect.right - BltInfo->DestRect.left);
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/* This sets SourceBits_16BPP to the top line */
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SourceBits_16BPP = (PWORD)((PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 2 * BltInfo->SourcePoint.x);
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if (bTopToBottom)
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{
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/* This sets SourceBits_16BPP to the bottom line */
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SourceBits_16BPP += (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta;
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}
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for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
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{
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SourceLine_16BPP = SourceBits_16BPP;
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DestLine = DestBits;
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if (bLeftToRight)
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{
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/* This sets the SourceLine_16BPP to the rightmost pixel */
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SourceLine_16BPP += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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}
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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, *SourceLine_16BPP);
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*DestLine++ = xColor & 0xff;
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*(PWORD)DestLine = (WORD)(xColor >> 8);
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DestLine += 2;
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DEC_OR_INC(SourceLine_16BPP, bLeftToRight, 1);
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}
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if (bTopToBottom)
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{
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SourceBits_16BPP = (PWORD)((PBYTE)SourceBits_16BPP - BltInfo->SourceSurface->lDelta);
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}
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else
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{
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SourceBits_16BPP = (PWORD)((PBYTE)SourceBits_16BPP + BltInfo->SourceSurface->lDelta);
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}
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DestBits += BltInfo->DestSurface->lDelta;
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}
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break;
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case BMF_24BPP:
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DPRINT("24BPP Case Selected with DestRect Width of '%d'.\n",
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BltInfo->DestRect.right - BltInfo->DestRect.left);
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/* Check for no flips here because we are about to use RtlMoveMemory and it can only do increasing src & dst */
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if ((BltInfo->XlateSourceToDest == NULL ||
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(BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL) != 0) &&
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(!bTopToBottom && !bLeftToRight))
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{
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DPRINT("XO_TRIVIAL is TRUE.\n");
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if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
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{
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/* This sets SourceBits to the top line */
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 3 * 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, 3 * (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 + ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta) + 3 * BltInfo->SourcePoint.x;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + 3 * 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, 3 * (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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DPRINT("XO_TRIVIAL is NOT TRUE.\n");
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if (!bTopToBottom && !bLeftToRight)
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/* **Note: Indent is purposefully less than desired to keep reviewable differences to a minimum for PR** */
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{
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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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DWORD pixel = DIB_24BPP_GetPixel(BltInfo->SourceSurface, sx, sy);
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DIB_24BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, pixel));
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sx++;
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}
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sy++;
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}
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}
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else
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{
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/* Buffering for source and destination flip overlaps. Fixes KHMZ MirrorTest CORE-16642 */
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BOOL TopToBottomDone = FALSE;
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if (bLeftToRight)
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{
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DPRINT("Flip is bLeftToRight.\n");
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DWORD Index;
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/* Allocate enough pixels for a row in DWORD's */
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DWORD *store = ExAllocatePoolWithTag(NonPagedPool,
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(BltInfo->DestRect.right - BltInfo->DestRect.left + 1) * 4, TAG_DIB);
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if (store == NULL)
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{
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DPRINT1("Storage Allocation Failed.\n");
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return FALSE;
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}
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sx = BltInfo->SourcePoint.x;
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/* This sets sy to the top line */
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sy = BltInfo->SourcePoint.y;
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/* This sets sx to the rightmost pixel */
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sx = BltInfo->SourcePoint.x + (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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/* This sets sx to the rightmost pixel */
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sx = BltInfo->SourcePoint.x + (BltInfo->DestRect.right - BltInfo->DestRect.left - 1);
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Index = 0;
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// Read right to left and store
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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store[Index] = DIB_24BPP_GetPixel(BltInfo->SourceSurface, sx, sy);
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Index++;
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sx--;
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}
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Index = 0;
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// Write left to right to pixel
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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DIB_24BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, store[Index]));
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Index++;
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}
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sy++;
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}
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ExFreePoolWithTag(store, TAG_DIB);
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TopToBottomDone = TRUE;
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}
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if (bTopToBottom)
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{
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DPRINT("Flip is bTopToBottom.\n");
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DWORD Index;
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/* Allocate enough pixels for a column in DWORD's */
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DWORD *store = ExAllocatePoolWithTag(NonPagedPool,
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(BltInfo->DestRect.bottom - BltInfo->DestRect.top + 1) * 4, TAG_DIB);
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if (store == NULL)
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{
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DPRINT1("Storage Allocation Failed.\n");
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return FALSE;
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}
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/* The TopToBottomDone flag indicates that we are flipping for bTopToBottom and bLeftToRight
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* and have already completed the bLeftToRight. So we will lose our first flip output
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* unless we work with its output which is at the destination site. So in this case
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* our new Source becomes the previous outputs Destination.
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*/
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if (TopToBottomDone)
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{
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sx = BltInfo->DestRect.left;
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sy = BltInfo->DestRect.top;
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/* This sets sy to the bottom line */
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sy += (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
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}
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else
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{
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sx = BltInfo->SourcePoint.x;
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/* This sets sy to the top line */
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sy = BltInfo->SourcePoint.y;
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/* This sets sy to the bottom line */
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sy = BltInfo->SourcePoint.y + (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
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}
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for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
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{
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/* This sets sy to the bottom line */
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sy = BltInfo->SourcePoint.y + (BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1);
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Index = 0;
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/* Read bottom to top and store */
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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if (TopToBottomDone)
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{
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store[Index] = DIB_24BPP_GetPixel(BltInfo->DestSurface, sx, sy);
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}
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else
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{
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store[Index] = DIB_24BPP_GetPixel(BltInfo->SourceSurface, sx, sy);
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}
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Index++;
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sy--;
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}
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Index = 0;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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DIB_24BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, store[Index]));
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Index++;
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}
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sx++;
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}
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ExFreePoolWithTag(store, TAG_DIB);
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}
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}
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}
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break;
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case BMF_32BPP:
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DPRINT("32BPP Case Selected with DestRect Width of '%d'.\n",
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BltInfo->DestRect.right - BltInfo->DestRect.left);
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 4 * BltInfo->SourcePoint.x;
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if (bTopToBottom)
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{
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/* This sets SourceLine to the bottom line */
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SourceLine += BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1;
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}
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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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if (bLeftToRight)
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{
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/* This sets SourceBits to the rightmost pixel */
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|
SourceBits += (BltInfo->DestRect.right - BltInfo->DestRect.left - 1) * 4;
|
|
}
|
|
for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
|
|
{
|
|
xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *((PDWORD) SourceBits));
|
|
*DestBits = xColor & 0xff;
|
|
*(PWORD)(DestBits + 1) = (WORD)(xColor >> 8);
|
|
DEC_OR_INC(SourceBits, bLeftToRight, 4);
|
|
DestBits += 3;
|
|
}
|
|
|
|
DEC_OR_INC(SourceLine, bTopToBottom, BltInfo->SourceSurface->lDelta);
|
|
DestLine += BltInfo->DestSurface->lDelta;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
DbgPrint("DIB_24BPP_Bitblt: Unhandled Source BPP: %u\n", BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOLEAN
|
|
DIB_24BPP_BitBlt(PBLTINFO BltInfo)
|
|
{
|
|
LONG DestX, DestY;
|
|
LONG SourceX, SourceY;
|
|
LONG PatternY = 0;
|
|
ULONG Dest, Source = 0, Pattern = 0;
|
|
BOOL UsesSource;
|
|
BOOL UsesPattern;
|
|
PBYTE DestBits;
|
|
|
|
UsesSource = ROP4_USES_SOURCE(BltInfo->Rop4);
|
|
UsesPattern = ROP4_USES_PATTERN(BltInfo->Rop4);
|
|
|
|
SourceY = BltInfo->SourcePoint.y;
|
|
DestBits = (PBYTE)(
|
|
(PBYTE)BltInfo->DestSurface->pvScan0 +
|
|
(BltInfo->DestRect.left << 1) + BltInfo->DestRect.left +
|
|
BltInfo->DestRect.top * BltInfo->DestSurface->lDelta);
|
|
|
|
if (UsesPattern)
|
|
{
|
|
if (BltInfo->PatternSurface)
|
|
{
|
|
PatternY = (BltInfo->DestRect.top - BltInfo->BrushOrigin.y) %
|
|
BltInfo->PatternSurface->sizlBitmap.cy;
|
|
}
|
|
else
|
|
{
|
|
if (BltInfo->Brush)
|
|
{
|
|
Pattern = BltInfo->Brush->iSolidColor;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (DestY = BltInfo->DestRect.top; DestY < BltInfo->DestRect.bottom; DestY++)
|
|
{
|
|
SourceX = BltInfo->SourcePoint.x;
|
|
|
|
for (DestX = BltInfo->DestRect.left; DestX < BltInfo->DestRect.right; DestX++, DestBits += 3, SourceX++)
|
|
{
|
|
Dest = *((PUSHORT)DestBits) + (*(DestBits + 2) << 16);
|
|
|
|
if (UsesSource)
|
|
{
|
|
Source = DIB_GetSource(BltInfo->SourceSurface, SourceX, SourceY, BltInfo->XlateSourceToDest);
|
|
}
|
|
|
|
if (BltInfo->PatternSurface)
|
|
{
|
|
Pattern = DIB_GetSourceIndex(BltInfo->PatternSurface, (DestX - BltInfo->BrushOrigin.x) % BltInfo->PatternSurface->sizlBitmap.cx, PatternY);
|
|
}
|
|
|
|
Dest = DIB_DoRop(BltInfo->Rop4, Dest, Source, Pattern) & 0xFFFFFF;
|
|
*(PUSHORT)(DestBits) = Dest & 0xFFFF;
|
|
*(DestBits + 2) = (BYTE)(Dest >> 16);
|
|
}
|
|
|
|
SourceY++;
|
|
if (BltInfo->PatternSurface)
|
|
{
|
|
PatternY++;
|
|
PatternY %= BltInfo->PatternSurface->sizlBitmap.cy;
|
|
}
|
|
DestBits -= (BltInfo->DestRect.right - BltInfo->DestRect.left) * 3;
|
|
DestBits += BltInfo->DestSurface->lDelta;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* BitBlt Optimize */
|
|
BOOLEAN
|
|
DIB_24BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
|
|
{
|
|
LONG DestY;
|
|
|
|
/* Make WellOrdered by making top < bottom and left < right */
|
|
RECTL_vMakeWellOrdered(DestRect);
|
|
|
|
#if defined(_M_IX86) && !defined(_MSC_VER)
|
|
PBYTE xaddr = (PBYTE)DestSurface->pvScan0 + DestRect->top * DestSurface->lDelta + (DestRect->left << 1) + DestRect->left;
|
|
PBYTE addr;
|
|
ULONG Count;
|
|
ULONG xCount=DestRect->right - DestRect->left;
|
|
|
|
for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
|
|
{
|
|
Count = xCount;
|
|
addr = xaddr;
|
|
xaddr = (PBYTE)((ULONG_PTR)addr + DestSurface->lDelta);
|
|
|
|
if (Count < 8)
|
|
{
|
|
/* For small fills, don't bother doing anything fancy */
|
|
while (Count--)
|
|
{
|
|
*(PUSHORT)(addr) = color;
|
|
addr += 2;
|
|
*(addr) = color >> 16;
|
|
addr += 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Align to 4-byte address */
|
|
while (0 != ((ULONG_PTR) addr & 0x3))
|
|
{
|
|
*(PUSHORT)(addr) = color;
|
|
addr += 2;
|
|
*(addr) = color >> 16;
|
|
addr += 1;
|
|
Count--;
|
|
}
|
|
/* If the color we need to fill with is 0ABC, then the final mem pattern
|
|
* (note little-endianness) would be:
|
|
*
|
|
* |C.B.A|C.B.A|C.B.A|C.B.A| <- pixel borders
|
|
* |C.B.A.C|B.A.C.B|A.C.B.A| <- ULONG borders
|
|
*
|
|
* So, taking endianness into account again, we need to fill with these
|
|
* ULONGs: CABC BCAB ABCA */
|
|
|
|
/* This is about 30% faster than the generic C code below */
|
|
__asm__ __volatile__ (
|
|
"movl %1, %%ecx\n\t"
|
|
"andl $0xffffff, %%ecx\n\t" /* 0ABC */
|
|
"movl %%ecx, %%ebx\n\t" /* Construct BCAB in ebx */
|
|
"shrl $8, %%ebx\n\t"
|
|
"movl %%ecx, %%eax\n\t"
|
|
"shll $16, %%eax\n\t"
|
|
"orl %%eax, %%ebx\n\t"
|
|
"movl %%ecx, %%edx\n\t" /* Construct ABCA in edx */
|
|
"shll $8, %%edx\n\t"
|
|
"movl %%ecx, %%eax\n\t"
|
|
"shrl $16, %%eax\n\t"
|
|
"orl %%eax, %%edx\n\t"
|
|
"movl %%ecx, %%eax\n\t" /* Construct CABC in eax */
|
|
"shll $24, %%eax\n\t"
|
|
"orl %%ecx, %%eax\n\t"
|
|
"movl %2, %%ecx\n\t" /* Load count */
|
|
"shr $2, %%ecx\n\t"
|
|
"movl %3, %%edi\n" /* Load dest */
|
|
"1:\n\t"
|
|
"movl %%eax, (%%edi)\n\t" /* Store 4 pixels, 12 bytes */
|
|
"movl %%ebx, 4(%%edi)\n\t"
|
|
"movl %%edx, 8(%%edi)\n\t"
|
|
"addl $12, %%edi\n\t"
|
|
"dec %%ecx\n\t"
|
|
"jnz 1b\n\t"
|
|
"movl %%edi, %0"
|
|
: "=m"(addr)
|
|
: "m"(color), "m"(Count), "m"(addr)
|
|
: "%eax", "%ebx", "%ecx", "%edx", "%edi");
|
|
Count = Count & 0x03;
|
|
while (0 != Count--)
|
|
{
|
|
*(PUSHORT)(addr) = color;
|
|
addr += 2;
|
|
*(addr) = color >> 16;
|
|
addr += 1;
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
|
|
for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
|
|
{
|
|
DIB_24BPP_HLine(DestSurface, DestRect->left, DestRect->right, DestY, color);
|
|
}
|
|
#endif
|
|
return TRUE;
|
|
}
|
|
|
|
BOOLEAN
|
|
DIB_24BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
|
|
RECTL* DestRect, RECTL *SourceRect,
|
|
XLATEOBJ *ColorTranslation, ULONG iTransColor)
|
|
{
|
|
LONG X, Y, SourceX, SourceY = 0, wd;
|
|
ULONG Source = 0, Dest;
|
|
BYTE *DestBits;
|
|
|
|
LONG DstHeight;
|
|
LONG DstWidth;
|
|
LONG SrcHeight;
|
|
LONG SrcWidth;
|
|
|
|
DstHeight = DestRect->bottom - DestRect->top;
|
|
DstWidth = DestRect->right - DestRect->left;
|
|
SrcHeight = SourceRect->bottom - SourceRect->top;
|
|
SrcWidth = SourceRect->right - SourceRect->left;
|
|
|
|
DestBits = (BYTE*)((PBYTE)DestSurf->pvScan0 +
|
|
(DestRect->left * 3) +
|
|
DestRect->top * DestSurf->lDelta);
|
|
wd = DestSurf->lDelta - ((DestRect->right - DestRect->left) * 3);
|
|
|
|
for(Y = DestRect->top; Y < DestRect->bottom; Y++)
|
|
{
|
|
SourceY = SourceRect->top+(Y - DestRect->top) * SrcHeight / DstHeight;
|
|
for(X = DestRect->left; X < DestRect->right; X++, DestBits += 3)
|
|
{
|
|
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)
|
|
{
|
|
Dest = XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFFFFFF;
|
|
*(PUSHORT)(DestBits) = Dest & 0xFFFF;
|
|
*(DestBits + 2) = (BYTE)(Dest >> 16);
|
|
}
|
|
}
|
|
}
|
|
|
|
DestBits = (BYTE*)((ULONG_PTR)DestBits + wd);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
typedef union {
|
|
ULONG ul;
|
|
struct {
|
|
UCHAR red;
|
|
UCHAR green;
|
|
UCHAR blue;
|
|
UCHAR alpha;
|
|
} col;
|
|
} NICEPIXEL32;
|
|
|
|
static __inline UCHAR
|
|
Clamp8(ULONG val)
|
|
{
|
|
return (val > 255) ? 255 : (UCHAR)val;
|
|
}
|
|
|
|
BOOLEAN
|
|
DIB_24BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
|
|
RECTL* SourceRect, CLIPOBJ* ClipRegion,
|
|
XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
|
|
{
|
|
INT Rows, Cols, SrcX, SrcY;
|
|
register PUCHAR Dst;
|
|
BLENDFUNCTION BlendFunc;
|
|
register NICEPIXEL32 DstPixel, SrcPixel;
|
|
UCHAR Alpha;
|
|
//UCHAR SrcBpp;
|
|
|
|
DPRINT("DIB_24BPP_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;
|
|
}
|
|
|
|
Dst = (PUCHAR)((ULONG_PTR)Dest->pvScan0 + (DestRect->top * Dest->lDelta) +
|
|
(DestRect->left * 3));
|
|
//SrcBpp = BitsPerFormat(Source->iBitmapFormat);
|
|
|
|
Rows = 0;
|
|
SrcY = SourceRect->top;
|
|
while (++Rows <= DestRect->bottom - DestRect->top)
|
|
{
|
|
Cols = 0;
|
|
SrcX = SourceRect->left;
|
|
while (++Cols <= DestRect->right - DestRect->left)
|
|
{
|
|
SrcPixel.ul = DIB_GetSource(Source, SrcX, SrcY, ColorTranslation);
|
|
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;
|
|
if (!(BlendFunc.AlphaFormat & AC_SRC_ALPHA))
|
|
{
|
|
Alpha = BlendFunc.SourceConstantAlpha ;
|
|
}
|
|
else
|
|
{
|
|
Alpha = (SrcPixel.col.alpha * BlendFunc.SourceConstantAlpha) / 255;
|
|
}
|
|
|
|
DstPixel.col.red = Clamp8((*Dst * (255 - Alpha)) / 255 + SrcPixel.col.red) ;
|
|
DstPixel.col.green = Clamp8((*(Dst+1) * (255 - Alpha) / 255 + SrcPixel.col.green)) ;
|
|
DstPixel.col.blue = Clamp8((*(Dst+2) * (255 - Alpha)) / 255 + SrcPixel.col.blue) ;
|
|
*Dst++ = DstPixel.col.red;
|
|
*Dst++ = DstPixel.col.green;
|
|
*Dst++ = DstPixel.col.blue;
|
|
SrcX = SourceRect->left + (Cols*(SourceRect->right - SourceRect->left))/(DestRect->right - DestRect->left);
|
|
}
|
|
Dst = (PUCHAR)((ULONG_PTR)Dest->pvScan0 + ((DestRect->top + Rows) * Dest->lDelta) +
|
|
(DestRect->left*3));
|
|
SrcY = SourceRect->top + (Rows*(SourceRect->bottom - SourceRect->top))/(DestRect->bottom - DestRect->top);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* EOF */
|