mirror of
https://github.com/reactos/reactos.git
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945 lines
30 KiB
C
945 lines
30 KiB
C
/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id$ */
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#include <w32k.h>
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#define NDEBUG
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#include <debug.h>
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VOID
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DIB_8BPP_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 + x;
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*byteaddr = c;
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}
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ULONG
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DIB_8BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
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{
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PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + x;
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return (ULONG)(*byteaddr);
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}
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VOID
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DIB_8BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
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{
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memset((PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + x1, (BYTE) c, x2 - x1);
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}
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VOID
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DIB_8BPP_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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PBYTE addr = byteaddr + x;
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LONG lDelta = SurfObj->lDelta;
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byteaddr = addr;
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while(y1++ < y2) {
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*addr = 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_8BPP_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) + 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_8BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
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} else {
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DIB_8BPP_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 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + (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_8BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
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if(f1 == 1) { SourceLine_4BPP++; f1 = 0; } else { f1 = 1; }
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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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if (NULL == BltInfo->XlateSourceToDest || 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) + 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, 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) + BltInfo->SourcePoint.x;
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + 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, 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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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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*DestBits++ = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *SourceBits++);
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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 + ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta) + BltInfo->SourcePoint.x;
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DestLine = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + 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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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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*DestBits++ = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *SourceBits++);
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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_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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*DestBits = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
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SourceBits += 2;
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DestBits += 1;
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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 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 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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*DestBits = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
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SourceBits += 3;
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DestBits += 1;
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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 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 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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xColor = *((PDWORD) SourceBits);
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*DestBits = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
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SourceBits += 4;
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DestBits += 1;
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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_8BPP_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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/* BitBlt Optimize */
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BOOLEAN
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DIB_8BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
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{
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ULONG DestY;
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for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
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{
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DIB_8BPP_HLine(DestSurface, DestRect->left, DestRect->right, DestY, color);
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}
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return TRUE;
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}
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/*
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=======================================
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Stretching functions goes below
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Some parts of code are based on an
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article "Bresenhame image scaling"
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Dr. Dobb Journal, May 2002
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=======================================
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*/
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typedef unsigned char PIXEL;
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/* 16-bit HiColor (565 format) */
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__inline PIXEL average8(PIXEL a, PIXEL b)
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{
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return a; // FIXME: Depend on SetStretchMode
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}
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//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
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void ScaleLineAvg8(PIXEL *Target, PIXEL *Source, int SrcWidth, int TgtWidth)
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{
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int NumPixels = TgtWidth;
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int IntPart = SrcWidth / TgtWidth;
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int FractPart = SrcWidth % TgtWidth;
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int Mid = TgtWidth >> 1;
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int E = 0;
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int skip;
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PIXEL p;
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skip = (TgtWidth < SrcWidth) ? 0 : (TgtWidth / (2*SrcWidth) + 1);
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NumPixels -= skip;
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while (NumPixels-- > 0) {
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p = *Source;
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if (E >= Mid)
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p = average8(p, *(Source+1));
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*Target++ = p;
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Source += IntPart;
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E += FractPart;
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if (E >= TgtWidth) {
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E -= TgtWidth;
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Source++;
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} /* if */
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} /* while */
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while (skip-- > 0)
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*Target++ = *Source;
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}
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static BOOLEAN
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FinalCopy8(PIXEL *Target, PIXEL *Source, PSPAN ClipSpans, UINT ClipSpansCount, UINT *SpanIndex,
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UINT DestY, RECTL *DestRect)
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{
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LONG Left, Right;
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while (ClipSpans[*SpanIndex].Y < DestY
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|| (ClipSpans[*SpanIndex].Y == DestY
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&& ClipSpans[*SpanIndex].X + ClipSpans[*SpanIndex].Width < DestRect->left))
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{
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(*SpanIndex)++;
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if (ClipSpansCount <= *SpanIndex)
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{
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/* No more spans, everything else is clipped away, we're done */
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return FALSE;
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}
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}
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while (ClipSpans[*SpanIndex].Y == DestY)
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{
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if (ClipSpans[*SpanIndex].X < DestRect->right)
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{
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Left = max(ClipSpans[*SpanIndex].X, DestRect->left);
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Right = min(ClipSpans[*SpanIndex].X + ClipSpans[*SpanIndex].Width, DestRect->right);
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memcpy(Target + Left - DestRect->left, Source + Left - DestRect->left,
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(Right - Left) * sizeof(PIXEL));
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}
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(*SpanIndex)++;
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if (ClipSpansCount <= *SpanIndex)
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{
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/* No more spans, everything else is clipped away, we're done */
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return FALSE;
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}
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}
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return TRUE;
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}
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//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
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BOOLEAN ScaleRectAvg8(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
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RECTL* DestRect, RECTL *SourceRect,
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POINTL* MaskOrigin, POINTL BrushOrigin,
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CLIPOBJ *ClipRegion, XLATEOBJ *ColorTranslation,
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ULONG Mode)
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{
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int NumPixels = DestRect->bottom - DestRect->top;
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int IntPart = (((SourceRect->bottom - SourceRect->top) / (DestRect->bottom - DestRect->top)) * SourceSurf->lDelta); //((SourceRect->bottom - SourceRect->top) / (DestRect->bottom - DestRect->top)) * (SourceRect->right - SourceRect->left);
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int FractPart = (SourceRect->bottom - SourceRect->top) % (DestRect->bottom - DestRect->top);
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int Mid = (DestRect->bottom - DestRect->top) >> 1;
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int E = 0;
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int skip;
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PIXEL *ScanLine, *ScanLineAhead;
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PIXEL *PrevSource = NULL;
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PIXEL *PrevSourceAhead = NULL;
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PIXEL *Target = (PIXEL *) ((PBYTE)DestSurf->pvScan0 + (DestRect->top * DestSurf->lDelta) + DestRect->left);
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PIXEL *Source = (PIXEL *) ((PBYTE)SourceSurf->pvScan0 + (SourceRect->top * SourceSurf->lDelta) + SourceRect->left);
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PSPAN ClipSpans;
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UINT ClipSpansCount;
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UINT SpanIndex;
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LONG DestY;
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if (! ClipobjToSpans(&ClipSpans, &ClipSpansCount, ClipRegion, DestRect))
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{
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return FALSE;
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}
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if (0 == ClipSpansCount)
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{
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/* No clip spans == empty clipping region, everything clipped away */
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ASSERT(NULL == ClipSpans);
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return TRUE;
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}
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skip = (DestRect->bottom - DestRect->top < SourceRect->bottom - SourceRect->top) ? 0 : ((DestRect->bottom - DestRect->top) / (2 * (SourceRect->bottom - SourceRect->top)) + 1);
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NumPixels -= skip;
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ScanLine = (PIXEL*)ExAllocatePool(PagedPool, (DestRect->right - DestRect->left) * sizeof(PIXEL));
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ScanLineAhead = (PIXEL *)ExAllocatePool(PagedPool, (DestRect->right - DestRect->left) * sizeof(PIXEL));
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if (!ScanLine || !ScanLineAhead)
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{
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if (ScanLine) ExFreePool(ScanLine);
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if (ScanLineAhead) ExFreePool(ScanLineAhead);
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return FALSE;
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}
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DestY = DestRect->top;
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SpanIndex = 0;
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while (NumPixels-- > 0) {
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if (Source != PrevSource) {
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if (Source == PrevSourceAhead) {
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/* the next scan line has already been scaled and stored in
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* ScanLineAhead; swap the buffers that ScanLine and ScanLineAhead
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* point to
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*/
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PIXEL *tmp = ScanLine;
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ScanLine = ScanLineAhead;
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ScanLineAhead = tmp;
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} else {
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ScaleLineAvg8(ScanLine, Source, SourceRect->right - SourceRect->left, DestRect->right - DestRect->left);
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} /* if */
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PrevSource = Source;
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} /* if */
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if (E >= Mid && PrevSourceAhead != (PIXEL *)((BYTE *)Source + SourceSurf->lDelta)) {
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int x;
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ScaleLineAvg8(ScanLineAhead, (PIXEL *)((BYTE *)Source + SourceSurf->lDelta), SourceRect->right - SourceRect->left, DestRect->right - DestRect->left);
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for (x = 0; x < DestRect->right - DestRect->left; x++)
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ScanLine[x] = average8(ScanLine[x], ScanLineAhead[x]);
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PrevSourceAhead = (PIXEL *)((BYTE *)Source + SourceSurf->lDelta);
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} /* if */
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if (! FinalCopy8(Target, ScanLine, ClipSpans, ClipSpansCount, &SpanIndex, DestY, DestRect))
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{
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/* No more spans, everything else is clipped away, we're done */
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ExFreePool(ClipSpans);
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ExFreePool(ScanLine);
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ExFreePool(ScanLineAhead);
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return TRUE;
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}
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DestY++;
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Target = (PIXEL *)((BYTE *)Target + DestSurf->lDelta);
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Source += IntPart;
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E += FractPart;
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if (E >= DestRect->bottom - DestRect->top) {
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E -= DestRect->bottom - DestRect->top;
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Source = (PIXEL *)((BYTE *)Source + SourceSurf->lDelta);
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} /* if */
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} /* while */
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if (skip > 0 && Source != PrevSource)
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ScaleLineAvg8(ScanLine, Source, SourceRect->right - SourceRect->left, DestRect->right - DestRect->left);
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while (skip-- > 0) {
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if (! FinalCopy8(Target, ScanLine, ClipSpans, ClipSpansCount, &SpanIndex, DestY, DestRect))
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{
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/* No more spans, everything else is clipped away, we're done */
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ExFreePool(ClipSpans);
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ExFreePool(ScanLine);
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ExFreePool(ScanLineAhead);
|
|
return TRUE;
|
|
}
|
|
DestY++;
|
|
Target = (PIXEL *)((BYTE *)Target + DestSurf->lDelta);
|
|
} /* while */
|
|
|
|
ExFreePool(ClipSpans);
|
|
ExFreePool(ScanLine);
|
|
ExFreePool(ScanLineAhead);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
|
|
BOOLEAN DIB_8BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
|
|
RECTL* DestRect, RECTL *SourceRect,
|
|
POINTL* MaskOrigin, POINTL BrushOrigin,
|
|
CLIPOBJ *ClipRegion, XLATEOBJ *ColorTranslation,
|
|
ULONG Mode)
|
|
{
|
|
LONG SrcSizeY;
|
|
LONG SrcSizeX;
|
|
LONG DesSizeY;
|
|
LONG DesSizeX;
|
|
LONG sx = 0;
|
|
LONG sy = 0;
|
|
LONG DesX;
|
|
LONG DesY;
|
|
PULONG DestBits;
|
|
LONG DifflDelta;
|
|
|
|
LONG SrcZoomXHight;
|
|
LONG SrcZoomXLow;
|
|
LONG SrcZoomYHight;
|
|
LONG SrcZoomYLow;
|
|
|
|
LONG sy_dec = 0;
|
|
LONG sy_max;
|
|
|
|
LONG sx_dec = 0;
|
|
LONG sx_max;
|
|
|
|
DPRINT("DIB_8BPP_StretchBlt: Source BPP: %u, srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
|
|
BitsPerFormat(SourceSurf->iBitmapFormat), SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
|
|
DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
|
|
|
|
/* Calc the Zoom height of Source */
|
|
SrcSizeY = SourceRect->bottom - SourceRect->top;
|
|
|
|
/* Calc the Zoom Width of Source */
|
|
SrcSizeX = SourceRect->right - SourceRect->left;
|
|
|
|
/* Calc the Zoom height of Destions */
|
|
DesSizeY = DestRect->bottom - DestRect->top;
|
|
|
|
/* Calc the Zoom width of Destions */
|
|
DesSizeX = DestRect->right - DestRect->left;
|
|
|
|
/* Calc the zoom factor of soruce height */
|
|
SrcZoomYHight = SrcSizeY / DesSizeY;
|
|
SrcZoomYLow = SrcSizeY - (SrcZoomYHight * DesSizeY);
|
|
|
|
/* Calc the zoom factor of soruce width */
|
|
SrcZoomXHight = SrcSizeX / DesSizeX;
|
|
SrcZoomXLow = SrcSizeX - (SrcZoomXHight * DesSizeX);
|
|
|
|
sx_max = DesSizeX;
|
|
sy_max = DesSizeY;
|
|
sy = SourceRect->top;
|
|
|
|
DestBits = (PULONG)((PBYTE)DestSurf->pvScan0 + (DestRect->left) +
|
|
DestRect->top * DestSurf->lDelta);
|
|
|
|
DifflDelta = DestSurf->lDelta - DesSizeX ;
|
|
|
|
switch(SourceSurf->iBitmapFormat)
|
|
{
|
|
case BMF_1BPP:
|
|
/* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
|
|
/* This is a reference implementation, it hasn't been optimized for speed */
|
|
for (DesY=0; DesY<DesSizeY; DesY++)
|
|
{
|
|
sx = SourceRect->left;
|
|
sx_dec = 0;
|
|
for (DesX=0; DesX<DesSizeX; DesX++)
|
|
{
|
|
*DestBits = XLATEOBJ_iXlate(ColorTranslation,
|
|
DIB_1BPP_GetPixel(SourceSurf, sx, sy));
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + 1);
|
|
|
|
sx += SrcZoomXHight;
|
|
sx_dec += SrcZoomXLow;
|
|
if (sx_dec >= sx_max)
|
|
{
|
|
sx++;
|
|
sx_dec -= sx_max;
|
|
}
|
|
}
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
|
|
|
|
sy += SrcZoomYHight;
|
|
sy_dec += SrcZoomYLow;
|
|
if (sy_dec >= sy_max)
|
|
{
|
|
sy++;
|
|
sy_dec -= sy_max;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BMF_4BPP:
|
|
/* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
|
|
/* This is a reference implementation, it hasn't been optimized for speed */
|
|
for (DesY=0; DesY<DesSizeY; DesY++)
|
|
{
|
|
sx = SourceRect->left;
|
|
sx_dec = 0;
|
|
for (DesX=0; DesX<DesSizeX; DesX++)
|
|
{
|
|
*DestBits = XLATEOBJ_iXlate(ColorTranslation,
|
|
DIB_4BPP_GetPixel(SourceSurf, sx, sy));
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + 1);
|
|
|
|
sx += SrcZoomXHight;
|
|
sx_dec += SrcZoomXLow;
|
|
if (sx_dec >= sx_max)
|
|
{
|
|
sx++;
|
|
sx_dec -= sx_max;
|
|
}
|
|
}
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
|
|
|
|
sy += SrcZoomYHight;
|
|
sy_dec += SrcZoomYLow;
|
|
if (sy_dec >= sy_max)
|
|
{
|
|
sy++;
|
|
sy_dec -= sy_max;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BMF_8BPP:
|
|
return ScaleRectAvg8(DestSurf, SourceSurf, DestRect, SourceRect, MaskOrigin, BrushOrigin,
|
|
ClipRegion, ColorTranslation, Mode);
|
|
break;
|
|
|
|
case BMF_16BPP:
|
|
/* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
|
|
/* This is a reference implementation, it hasn't been optimized for speed */
|
|
for (DesY=0; DesY<DesSizeY; DesY++)
|
|
{
|
|
sx = SourceRect->left;
|
|
sx_dec = 0;
|
|
for (DesX=0; DesX<DesSizeX; DesX++)
|
|
{
|
|
*DestBits = XLATEOBJ_iXlate(ColorTranslation,
|
|
DIB_16BPP_GetPixel(SourceSurf, sx, sy));
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + 1);
|
|
|
|
sx += SrcZoomXHight;
|
|
sx_dec += SrcZoomXLow;
|
|
if (sx_dec >= sx_max)
|
|
{
|
|
sx++;
|
|
sx_dec -= sx_max;
|
|
}
|
|
}
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
|
|
|
|
sy += SrcZoomYHight;
|
|
sy_dec += SrcZoomYLow;
|
|
if (sy_dec >= sy_max)
|
|
{
|
|
sy++;
|
|
sy_dec -= sy_max;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BMF_24BPP:
|
|
for (DesY=0; DesY<DesSizeY; DesY++)
|
|
{
|
|
sx = SourceRect->left;
|
|
sx_dec = 0;
|
|
for (DesX=0; DesX<DesSizeX; DesX++)
|
|
{
|
|
*DestBits = XLATEOBJ_iXlate(ColorTranslation,
|
|
DIB_24BPP_GetPixel(SourceSurf, sx, sy));
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + 1);
|
|
|
|
sx += SrcZoomXHight;
|
|
sx_dec += SrcZoomXLow;
|
|
if (sx_dec >= sx_max)
|
|
{
|
|
sx++;
|
|
sx_dec -= sx_max;
|
|
}
|
|
}
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
|
|
|
|
sy += SrcZoomYHight;
|
|
sy_dec += SrcZoomYLow;
|
|
if (sy_dec >= sy_max)
|
|
{
|
|
sy++;
|
|
sy_dec -= sy_max;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BMF_32BPP:
|
|
/* FIXME : MaskOrigin, BrushOrigin, ClipRegion, Mode ? */
|
|
/* This is a reference implementation, it hasn't been optimized for speed */
|
|
for (DesY=0; DesY<DesSizeY; DesY++)
|
|
{
|
|
sx = SourceRect->left;
|
|
sx_dec = 0;
|
|
for (DesX=0; DesX<DesSizeX; DesX++)
|
|
{
|
|
*DestBits = XLATEOBJ_iXlate(ColorTranslation,
|
|
DIB_1BPP_GetPixel(SourceSurf, sx, sy));
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + 1);
|
|
|
|
sx += SrcZoomXHight;
|
|
sx_dec += SrcZoomXLow;
|
|
if (sx_dec >= sx_max)
|
|
{
|
|
sx++;
|
|
sx_dec -= sx_max;
|
|
}
|
|
}
|
|
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + DifflDelta);
|
|
|
|
sy += SrcZoomYHight;
|
|
sy_dec += SrcZoomYLow;
|
|
if (sy_dec >= sy_max)
|
|
{
|
|
sy++;
|
|
sy_dec -= sy_max;
|
|
}
|
|
}
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
DPRINT1("DIB_8BPP_StretchBlt: Unhandled Source BPP: %u\n", BitsPerFormat(SourceSurf->iBitmapFormat));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOLEAN
|
|
DIB_8BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
|
|
RECTL* DestRect, POINTL *SourcePoint,
|
|
XLATEOBJ *ColorTranslation, ULONG iTransColor)
|
|
{
|
|
ULONG RoundedRight, X, Y, SourceX, SourceY, Source, wd, Dest;
|
|
ULONG *DestBits;
|
|
|
|
RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x3);
|
|
SourceY = SourcePoint->y;
|
|
DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 + DestRect->left +
|
|
(DestRect->top * DestSurf->lDelta));
|
|
wd = DestSurf->lDelta - (DestRect->right - DestRect->left);
|
|
|
|
for(Y = DestRect->top; Y < DestRect->bottom; Y++)
|
|
{
|
|
DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 + DestRect->left +
|
|
(Y * DestSurf->lDelta));
|
|
SourceX = SourcePoint->x;
|
|
for (X = DestRect->left; X < RoundedRight; X += 4, DestBits++)
|
|
{
|
|
Dest = *DestBits;
|
|
|
|
Source = DIB_GetSourceIndex(SourceSurf, SourceX++, SourceY);
|
|
if(Source != iTransColor)
|
|
{
|
|
Dest &= 0xFFFFFF00;
|
|
Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFF);
|
|
}
|
|
|
|
Source = DIB_GetSourceIndex(SourceSurf, SourceX++, SourceY);
|
|
if(Source != iTransColor)
|
|
{
|
|
Dest &= 0xFFFF00FF;
|
|
Dest |= ((XLATEOBJ_iXlate(ColorTranslation, Source) << 8) & 0xFF00);
|
|
}
|
|
|
|
Source = DIB_GetSourceIndex(SourceSurf, SourceX++, SourceY);
|
|
if(Source != iTransColor)
|
|
{
|
|
Dest &= 0xFF00FFFF;
|
|
Dest |= ((XLATEOBJ_iXlate(ColorTranslation, Source) << 16) & 0xFF0000);
|
|
}
|
|
|
|
Source = DIB_GetSourceIndex(SourceSurf, SourceX++, SourceY);
|
|
if(Source != iTransColor)
|
|
{
|
|
Dest &= 0x00FFFFFF;
|
|
Dest |= ((XLATEOBJ_iXlate(ColorTranslation, Source) << 24) & 0xFF000000);
|
|
}
|
|
|
|
*DestBits = Dest;
|
|
}
|
|
|
|
if(X < DestRect->right)
|
|
{
|
|
for (; X < DestRect->right; X++)
|
|
{
|
|
Source = DIB_GetSourceIndex(SourceSurf, SourceX++, SourceY);
|
|
if(Source != iTransColor)
|
|
{
|
|
*((BYTE*)DestBits) = (BYTE)(XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFF);
|
|
}
|
|
DestBits = (PULONG)((ULONG_PTR)DestBits + 1);
|
|
}
|
|
}
|
|
SourceY++;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
typedef union {
|
|
ULONG ul;
|
|
struct {
|
|
UCHAR red;
|
|
UCHAR green;
|
|
UCHAR blue;
|
|
UCHAR alpha;
|
|
} col;
|
|
} NICEPIXEL32;
|
|
|
|
typedef union {
|
|
USHORT us;
|
|
struct {
|
|
USHORT red:5,
|
|
green:6,
|
|
blue:5;
|
|
} col;
|
|
} NICEPIXEL16;
|
|
|
|
static __inline UCHAR
|
|
Clamp8(ULONG val)
|
|
{
|
|
return (val > 255) ? 255 : val;
|
|
}
|
|
|
|
BOOLEAN
|
|
DIB_8BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
|
|
RECTL* SourceRect, CLIPOBJ* ClipRegion,
|
|
XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
|
|
{
|
|
INT Rows, Cols, SrcX, SrcY;
|
|
register PUCHAR Dst;
|
|
ULONG DstDelta;
|
|
BLENDFUNCTION BlendFunc;
|
|
register NICEPIXEL32 DstPixel;
|
|
register NICEPIXEL32 SrcPixel;
|
|
register NICEPIXEL16 SrcPixel16;
|
|
UCHAR Alpha, SrcBpp;
|
|
HPALETTE SrcPalette, DstPalette;
|
|
XLATEOBJ *SrcTo32Xlate, *DstTo32Xlate, *DstFrom32Xlate;
|
|
|
|
DPRINT("DIB_8BPP_AlphaBlend: srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
|
|
SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
|
|
DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
|
|
|
|
ASSERT(DestRect->bottom - DestRect->top == SourceRect->bottom - SourceRect->top &&
|
|
DestRect->right - DestRect->left == SourceRect->right - SourceRect->left);
|
|
|
|
BlendFunc = BlendObj->BlendFunction;
|
|
if (BlendFunc.BlendOp != AC_SRC_OVER)
|
|
{
|
|
DPRINT1("BlendOp != AC_SRC_OVER\n");
|
|
return FALSE;
|
|
}
|
|
if (BlendFunc.BlendFlags != 0)
|
|
{
|
|
DPRINT1("BlendFlags != 0\n");
|
|
return FALSE;
|
|
}
|
|
if ((BlendFunc.AlphaFormat & ~AC_SRC_ALPHA) != 0)
|
|
{
|
|
DPRINT1("Unsupported AlphaFormat (0x%x)\n", BlendFunc.AlphaFormat);
|
|
return FALSE;
|
|
}
|
|
if ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0 &&
|
|
BitsPerFormat(Source->iBitmapFormat) != 32)
|
|
{
|
|
DPRINT1("Source bitmap must be 32bpp when AC_SRC_ALPHA is set\n");
|
|
return FALSE;
|
|
}
|
|
|
|
SrcBpp = BitsPerFormat(Source->iBitmapFormat);
|
|
SrcPalette = IntEngGetXlatePalette(ColorTranslation, XO_SRCPALETTE);
|
|
if (SrcPalette != 0)
|
|
{
|
|
SrcTo32Xlate = IntEngCreateXlate(PAL_RGB, 0, NULL, SrcPalette);
|
|
if (SrcTo32Xlate == NULL)
|
|
{
|
|
DPRINT1("IntEngCreateXlate failed\n");
|
|
return FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SrcTo32Xlate = NULL;
|
|
ASSERT(SrcBpp >= 16);
|
|
}
|
|
|
|
DstPalette = IntEngGetXlatePalette(ColorTranslation, XO_DESTPALETTE);
|
|
DstTo32Xlate = IntEngCreateXlate(PAL_RGB, 0, NULL, DstPalette);
|
|
DstFrom32Xlate = IntEngCreateXlate(0, PAL_RGB, DstPalette, NULL);
|
|
if (DstTo32Xlate == NULL || DstFrom32Xlate == NULL)
|
|
{
|
|
if (SrcTo32Xlate != NULL)
|
|
EngDeleteXlate(SrcTo32Xlate);
|
|
if (DstTo32Xlate != NULL)
|
|
EngDeleteXlate(DstTo32Xlate);
|
|
if (DstFrom32Xlate != NULL)
|
|
EngDeleteXlate(DstFrom32Xlate);
|
|
DPRINT1("IntEngCreateXlate failed\n");
|
|
return FALSE;
|
|
}
|
|
|
|
Dst = (PUCHAR)((ULONG_PTR)Dest->pvScan0 + (DestRect->top * Dest->lDelta) +
|
|
DestRect->left);
|
|
DstDelta = Dest->lDelta - (DestRect->right - DestRect->left);
|
|
|
|
Rows = DestRect->bottom - DestRect->top;
|
|
SrcY = SourceRect->top;
|
|
while (--Rows >= 0)
|
|
{
|
|
Cols = DestRect->right - DestRect->left;
|
|
SrcX = SourceRect->left;
|
|
while (--Cols >= 0)
|
|
{
|
|
if (SrcTo32Xlate != NULL)
|
|
{
|
|
SrcPixel.ul = DIB_GetSource(Source, SrcX++, SrcY, SrcTo32Xlate);
|
|
}
|
|
else if (SrcBpp <= 16)
|
|
{
|
|
SrcPixel16.us = DIB_GetSource(Source, SrcX++, SrcY, ColorTranslation);
|
|
SrcPixel.col.red = (SrcPixel16.col.red << 3) | (SrcPixel16.col.red >> 2);
|
|
SrcPixel.col.green = (SrcPixel16.col.green << 2) | (SrcPixel16.col.green >> 4);
|
|
SrcPixel.col.blue = (SrcPixel16.col.blue << 3) | (SrcPixel16.col.blue >> 2);
|
|
}
|
|
else
|
|
{
|
|
SrcPixel.ul = DIB_GetSourceIndex(Source, SrcX++, SrcY);
|
|
}
|
|
SrcPixel.col.red = SrcPixel.col.red * BlendFunc.SourceConstantAlpha / 255;
|
|
SrcPixel.col.green = SrcPixel.col.green * BlendFunc.SourceConstantAlpha / 255;
|
|
SrcPixel.col.blue = SrcPixel.col.blue * BlendFunc.SourceConstantAlpha / 255;
|
|
SrcPixel.col.alpha = (SrcBpp == 32) ? (SrcPixel.col.alpha * BlendFunc.SourceConstantAlpha / 255) : BlendFunc.SourceConstantAlpha;
|
|
|
|
Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
|
|
SrcPixel.col.alpha : BlendFunc.SourceConstantAlpha;
|
|
|
|
DstPixel.ul = XLATEOBJ_iXlate(DstTo32Xlate, *Dst);
|
|
DstPixel.col.red = Clamp8(DstPixel.col.red * (255 - Alpha) / 255 + SrcPixel.col.red);
|
|
DstPixel.col.green = Clamp8(DstPixel.col.green * (255 - Alpha) / 255 + SrcPixel.col.green);
|
|
DstPixel.col.blue = Clamp8(DstPixel.col.blue * (255 - Alpha) / 255 + SrcPixel.col.blue);
|
|
*Dst++ = XLATEOBJ_iXlate(DstFrom32Xlate, DstPixel.ul);
|
|
}
|
|
Dst = (PUCHAR)((ULONG_PTR)Dst + DstDelta);
|
|
SrcY++;
|
|
}
|
|
|
|
if (SrcTo32Xlate != NULL)
|
|
EngDeleteXlate(SrcTo32Xlate);
|
|
if (DstTo32Xlate != NULL)
|
|
EngDeleteXlate(DstTo32Xlate);
|
|
if (DstFrom32Xlate != NULL)
|
|
EngDeleteXlate(DstFrom32Xlate);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* EOF */
|