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840 lines
30 KiB
C
840 lines
30 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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* 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_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 SourceBitsT, SourceBitsB, DestBitsT, DestBitsB;
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PBYTE SourceBits_4BPP, SourceLine_4BPP;
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PDWORD Source32, Dest32;
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DWORD Index;
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LONG DestWidth, DestHeight;
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BOOLEAN bTopToBottom, bLeftToRight;
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BOOLEAN blDeltaSrcNeg, blDeltaDestNeg;
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BOOLEAN blDeltaAdjustDone = FALSE;
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DPRINT("DIB_32BPP_BitBltSrcCopy: SourcePoint (%d, %d), SourceSurface cx/cy (%d/%d), "
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"DestSurface cx/cy (%d/%d) DestRect: (%d,%d)-(%d,%d)\n",
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BltInfo->SourcePoint.x, BltInfo->SourcePoint.y,
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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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DPRINT("BltInfo->DestSurface->lDelta is '%d' and BltInfo->SourceSurface->lDelta is '%d'.\n",
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BltInfo->DestSurface->lDelta, BltInfo->SourceSurface->lDelta);
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DPRINT("iBitmapFormat is %d and width,height is (%d,%d).\n", BltInfo->SourceSurface->iBitmapFormat,
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BltInfo->DestRect.right - BltInfo->DestRect.left, BltInfo->DestRect.bottom - BltInfo->DestRect.top);
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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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/* Do not deal with negative numbers for these values */
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if ((BltInfo->DestRect.left < 0) || (BltInfo->DestRect.top < 0) ||
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(BltInfo->DestRect.right < 0) || (BltInfo->DestRect.bottom < 0))
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return FALSE;
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/* Detect negative lDelta's meaning Bottom-Up bitmaps */
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blDeltaSrcNeg = BltInfo->SourceSurface->lDelta < 0;
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blDeltaDestNeg = BltInfo->DestSurface->lDelta < 0;
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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("bTopToBottom is '%d' and DestSurface->lDelta < 0 is '%d' and SourceSurface->lDelta < 0 is '%d'.\n",
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bTopToBottom, BltInfo->DestSurface->lDelta < 0 ? 1 : 0, BltInfo->SourceSurface->lDelta < 0 ? 1 : 0);
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/* Make WellOrdered with top < bottom and left < right */
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RECTL_vMakeWellOrdered(&BltInfo->DestRect);
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DestWidth = BltInfo->DestRect.right - BltInfo->DestRect.left;
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DestHeight = BltInfo->DestRect.bottom - BltInfo->DestRect.top;
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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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DPRINT("iBitmapFormat is %d and width,height is (%d,%d).\n", BltInfo->SourceSurface->iBitmapFormat,
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DestWidth, DestHeight);
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switch (BltInfo->SourceSurface->iBitmapFormat)
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{
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case BMF_1BPP:
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DPRINT("1BPP Case Selected with DestRect Width of '%d'.\n",
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DestWidth);
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if (bLeftToRight || bTopToBottom)
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DPRINT("bLeftToRight is '%d' and bTopToBottom is '%d'.\n", bLeftToRight, bTopToBottom);
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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 * (DestHeight - 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 the sx to the rightmost pixel */
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sx += (DestWidth - 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_32BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
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}
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else
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{
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DIB_32BPP_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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DestWidth);
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if (bLeftToRight || bTopToBottom)
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DPRINT("bLeftToRight is '%d' and bTopToBottom is '%d'.\n", bLeftToRight, bTopToBottom);
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/* This sets SourceBits_4BPP to the top line */
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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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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 * (DestHeight - 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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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 += (DestWidth - 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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DIB_32BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
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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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} else {
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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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}
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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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DestWidth);
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if (bLeftToRight || bTopToBottom)
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DPRINT("bLeftToRight is '%d' and bTopToBottom is '%d'.\n", bLeftToRight, bTopToBottom);
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/* This sets SourceLine to the top line */
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0
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+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta)
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+ BltInfo->SourcePoint.x;
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DestLine = DestBits;
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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 * (DestHeight - 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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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 += (DestWidth - 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 = *SourceBits;
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*((PDWORD) DestBits) = (DWORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
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DEC_OR_INC(SourceBits, bLeftToRight, 1);
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DestBits += 4;
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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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DestWidth);
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if (bLeftToRight || bTopToBottom)
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DPRINT("bLeftToRight is '%d' and bTopToBottom is '%d'.\n", bLeftToRight, bTopToBottom);
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/* This sets SourceLine to the top line */
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SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0
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+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta)
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+ 2 * BltInfo->SourcePoint.x;
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DestLine = DestBits;
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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 * (DestHeight - 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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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 += (DestWidth - 1) * 2;
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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 = *((PWORD) SourceBits);
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*((PDWORD) DestBits) = (DWORD)XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
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DEC_OR_INC(SourceBits, bLeftToRight, 2);
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DestBits += 4;
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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_24BPP:
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DPRINT("24BPP Case Selected with DestRect Width of '%d'.\n",
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DestWidth);
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if (bLeftToRight || bTopToBottom)
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DPRINT("bLeftToRight is '%d' and bTopToBottom is '%d'.\n", bLeftToRight, bTopToBottom);
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/* This sets SourceLine to the top line */
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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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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 * (DestHeight - 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 += (DestWidth - 1) * 3;
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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 = (*(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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DEC_OR_INC(SourceBits, bLeftToRight, 3);
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DestBits += 4;
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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_32BPP:
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DPRINT("32BPP Case Selected with SourcePoint (%d,%d) and DestRect Width/height of '%d/%d' DestRect: (%d,%d)-(%d,%d).\n",
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BltInfo->SourcePoint.x, BltInfo->SourcePoint.y, DestWidth, DestHeight,
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BltInfo->DestRect.left, BltInfo->DestRect.top, BltInfo->DestRect.right, BltInfo->DestRect.bottom);
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if (bLeftToRight || bTopToBottom)
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DPRINT("bLeftToRight is '%d' and bTopToBottom is '%d'.\n", bLeftToRight, bTopToBottom);
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/* This handles the negative lDelta's which represent Top-to-Bottom bitmaps */
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if (((blDeltaSrcNeg || blDeltaDestNeg) && !(blDeltaSrcNeg && blDeltaDestNeg)) && bTopToBottom)
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{
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DPRINT("Adjusting for lDelta's here.\n");
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if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
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{
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/* SourceBits points to top-left pixel for lDelta < 0 and bottom-left for lDelta > 0 */
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
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+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta)
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+ 4 * BltInfo->SourcePoint.x;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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RtlMoveMemory(DestBits, SourceBits, 4 * DestWidth);
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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 points to bottom-left pixel for lDelta < 0 and top-left for lDelta > 0 */
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
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+ ((BltInfo->SourcePoint.y + DestHeight - 1) * BltInfo->SourceSurface->lDelta)
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+ 4 * BltInfo->SourcePoint.x;
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/* DestBits points to bottom-left pixel for lDelta < 0 and top-left for lDelta > 0 */
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0
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+ ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta)
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+ 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 * DestWidth);
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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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blDeltaAdjustDone = TRUE;
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}
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/* This tests for whether we can use simplified/quicker code below.
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* It works for increasing source and destination areas only and there is no overlap and no flip.
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*/
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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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/* SourceBits points to top-left pixel for lDelta < 0 and bottom-left for lDelta > 0 */
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
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+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta)
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+ 4 * BltInfo->SourcePoint.x;
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for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
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{
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RtlMoveMemory(DestBits, SourceBits, 4 * DestWidth);
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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 points to bottom-left pixel for lDelta < 0 and top-left for lDelta > 0 */
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SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
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+ ((BltInfo->SourcePoint.y
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+ DestHeight - 1) * BltInfo->SourceSurface->lDelta)
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+ 4 * BltInfo->SourcePoint.x;
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/* SourceBits points to bottom-left pixel for lDelta < 0 and top-left for lDelta > 0 */
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DestBits = (PBYTE)BltInfo->DestSurface->pvScan0
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+ ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta)
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+ 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 * DestWidth);
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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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{
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if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
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{
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SourceBits = ((PBYTE)BltInfo->SourceSurface->pvScan0
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+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta)
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+ 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++);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Dest32 = (DWORD *) DestBits + (DestWidth - 1);
|
|
Source32 = (DWORD *) SourceBits + (DestWidth - 1);
|
|
for (i = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= i; i--)
|
|
{
|
|
*Dest32-- = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *Source32--);
|
|
}
|
|
}
|
|
SourceBits += BltInfo->SourceSurface->lDelta;
|
|
DestBits += BltInfo->DestSurface->lDelta;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
|
|
+ ((BltInfo->SourcePoint.y
|
|
+ DestHeight - 1) * BltInfo->SourceSurface->lDelta)
|
|
+ 4 * BltInfo->SourcePoint.x;
|
|
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0
|
|
+ ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta)
|
|
+ 4 * BltInfo->DestRect.left;
|
|
for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
|
|
{
|
|
if (BltInfo->DestRect.left < BltInfo->SourcePoint.x)
|
|
{
|
|
Dest32 = (DWORD *) DestBits;
|
|
Source32 = (DWORD *) SourceBits;
|
|
for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
|
|
{
|
|
*Dest32++ = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *Source32++);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Dest32 = (DWORD *) DestBits + (DestWidth - 1);
|
|
Source32 = (DWORD *) SourceBits + (DestWidth - 1);
|
|
for (i = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= i; i--)
|
|
{
|
|
*Dest32-- = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *Source32--);
|
|
}
|
|
}
|
|
SourceBits -= BltInfo->SourceSurface->lDelta;
|
|
DestBits -= BltInfo->DestSurface->lDelta;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Buffering for source and destination flip overlaps. Fixes KHMZ MirrorTest CORE-16642 */
|
|
BOOL TopToBottomDone = FALSE;
|
|
|
|
/* No need to flip a LeftToRight bitmap only one pixel wide */
|
|
if ((bLeftToRight) && (DestWidth > 1))
|
|
{
|
|
DPRINT("Flip is bLeftToRight.\n");
|
|
|
|
/* Allocate enough pixels for a row in DWORD's */
|
|
DWORD *store = ExAllocatePoolWithTag(NonPagedPool,
|
|
(DestWidth + 1) * 4, TAG_DIB);
|
|
if (store == NULL)
|
|
{
|
|
DPRINT1("Storage Allocation Failed.\n");
|
|
return FALSE;
|
|
}
|
|
|
|
/* This sets SourceBits to the bottom line */
|
|
SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
|
|
+ ((BltInfo->SourcePoint.y + DestHeight - 1)
|
|
* BltInfo->SourceSurface->lDelta) + 4 * BltInfo->SourcePoint.x;
|
|
|
|
/* This sets DestBits to the bottom line */
|
|
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0
|
|
+ (BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta
|
|
+ 4 * BltInfo->DestRect.left;
|
|
|
|
for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
|
|
{
|
|
|
|
/* Set Dest32 to right pixel */
|
|
Dest32 = (DWORD *) DestBits + (DestWidth - 1);
|
|
Source32 = (DWORD *) SourceBits;
|
|
|
|
Index = 0;
|
|
|
|
/* Store pixels from left to right */
|
|
for (i = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= i; i--)
|
|
{
|
|
store[Index] = *Source32++;
|
|
Index++;
|
|
}
|
|
|
|
Index = 0;
|
|
|
|
/* Copy stored dat to pixels from right to left */
|
|
for (i = BltInfo->DestRect.right - 1; BltInfo->DestRect.left <= i; i--)
|
|
{
|
|
*Dest32-- = store[Index];
|
|
Index++;
|
|
}
|
|
SourceBits -= BltInfo->SourceSurface->lDelta;
|
|
DestBits -= BltInfo->DestSurface->lDelta;
|
|
}
|
|
ExFreePoolWithTag(store, TAG_DIB);
|
|
TopToBottomDone = TRUE;
|
|
}
|
|
|
|
/* Top to Botoom Handling if bitmap more than one pixel high */
|
|
if ((bTopToBottom) && (DestHeight > 1))
|
|
{
|
|
/* Note: It is very important that this code remain optimized for time used.
|
|
* Otherwise you will have random crashes in ReactOS that are undesirable.
|
|
* For an example of this just try executing the code here two times.
|
|
*/
|
|
|
|
DPRINT("Flip is bTopToBottom.\n");
|
|
|
|
/* Allocate enough pixels for a row in DWORD's */
|
|
DWORD *store = ExAllocatePoolWithTag(NonPagedPool,
|
|
(DestWidth + 1) * 4, TAG_DIB);
|
|
if (store == NULL)
|
|
{
|
|
DPRINT1("Storage Allocation Failed.\n");
|
|
return FALSE;
|
|
}
|
|
|
|
/* This set DestBitsT to the top line */
|
|
DestBitsT = (PBYTE)BltInfo->DestSurface->pvScan0
|
|
+ ((BltInfo->DestRect.top) * BltInfo->DestSurface->lDelta)
|
|
+ 4 * BltInfo->DestRect.left;
|
|
|
|
/* This sets DestBitsB to the bottom line */
|
|
DestBitsB = (PBYTE)BltInfo->DestSurface->pvScan0
|
|
+ (BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta
|
|
+ 4 * BltInfo->DestRect.left;
|
|
|
|
/* The TopToBottomDone flag indicates that we are flipping for bTopToBottom and bLeftToRight
|
|
* and have already completed the bLeftToRight. So we will lose our first flip output
|
|
* unless we work with its output which is at the destination site. So in this case
|
|
* our new Source becomes the previous outputs Destination.
|
|
* Also in we use the same logic when we have corrected for negative lDelta's above
|
|
* and already completed a flip from Source to Destination for the first step
|
|
*/
|
|
|
|
if (TopToBottomDone || blDeltaAdjustDone)
|
|
{
|
|
/* This sets SourceBitsB to the bottom line */
|
|
SourceBitsB = DestBitsB;
|
|
|
|
/* This sets SourceBitsT to the top line */
|
|
SourceBitsT = DestBitsT;
|
|
}
|
|
else
|
|
{
|
|
/* This sets SourceBitsB to the bottom line */
|
|
SourceBitsB = (PBYTE)BltInfo->SourceSurface->pvScan0
|
|
+ ((BltInfo->SourcePoint.y + DestHeight - 1)
|
|
* BltInfo->SourceSurface->lDelta) + 4 * BltInfo->SourcePoint.x;
|
|
|
|
/* This sets SourceBitsT to the top line */
|
|
SourceBitsT = (PBYTE)BltInfo->SourceSurface->pvScan0
|
|
+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 4 * BltInfo->SourcePoint.x;
|
|
}
|
|
|
|
/* Overlaps and Vertical flips do not mix well. So we test for this and handle it
|
|
* by using two operations. First we just do a copy of the source to the destination.
|
|
* Then we do a flip in place at the destination location and we are done.
|
|
*/
|
|
if ((BltInfo->SourcePoint.y != BltInfo->DestRect.top) && // The values are not equal and
|
|
(abs(BltInfo->SourcePoint.y - BltInfo->DestRect.top) < (DestHeight + 2)) && // they are NOT seperated by > DestHeight
|
|
(BltInfo->SourceSurface->pvScan0 == BltInfo->DestSurface->pvScan0)) // and same surface (probably screen)
|
|
{
|
|
DPRINT("Flips Need Adjustments, so do move here.\n");
|
|
|
|
if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
|
|
{
|
|
/* SourceBits points to top-left pixel for lDelta < 0 and bottom-left for lDelta > 0 */
|
|
SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
|
|
+ (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta)
|
|
+ 4 * BltInfo->SourcePoint.x;
|
|
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
|
|
{
|
|
RtlMoveMemory(DestBits, SourceBits, 4 * DestWidth);
|
|
SourceBits += BltInfo->SourceSurface->lDelta;
|
|
DestBits += BltInfo->DestSurface->lDelta;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* SourceBits points to bottom-left pixel for lDelta < 0 and top-left for lDelta > 0 */
|
|
SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0
|
|
+ ((BltInfo->SourcePoint.y
|
|
+ DestHeight - 1) * BltInfo->SourceSurface->lDelta)
|
|
+ 4 * BltInfo->SourcePoint.x;
|
|
/* SourceBits points to bottom-left pixel for lDelta < 0 and top-left for lDelta > 0 */
|
|
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0
|
|
+ ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta)
|
|
+ 4 * BltInfo->DestRect.left;
|
|
for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
|
|
{
|
|
RtlMoveMemory(DestBits, SourceBits, 4 * DestWidth);
|
|
SourceBits -= BltInfo->SourceSurface->lDelta;
|
|
DestBits -= BltInfo->DestSurface->lDelta;
|
|
}
|
|
}
|
|
|
|
/* This sets SourceBitsB to the bottom line */
|
|
SourceBitsB = DestBitsB;
|
|
|
|
/* This sets SourceBitsT to the top line */
|
|
SourceBitsT = DestBitsT;
|
|
}
|
|
|
|
/* Vertical Flip code starts here */
|
|
for (j = 0; j < DestHeight / 2 ; j++)
|
|
{
|
|
/* Store bottom row of Source pixels */
|
|
RtlMoveMemory(store, SourceBitsB, 4 * DestWidth);
|
|
|
|
/* Copy top Source row to bottom Destination row overwriting it */
|
|
RtlMoveMemory(DestBitsB, SourceBitsT, 4 * DestWidth);
|
|
|
|
/* Copy stored bottom row of Source pixels to Destination top row of pixels */
|
|
RtlMoveMemory(DestBitsT, store, 4 * DestWidth);
|
|
|
|
/* Index top rows down and bottom rows up */
|
|
SourceBitsT += BltInfo->SourceSurface->lDelta;
|
|
SourceBitsB -= BltInfo->SourceSurface->lDelta;
|
|
|
|
DestBitsT += BltInfo->DestSurface->lDelta;
|
|
DestBitsB -= BltInfo->DestSurface->lDelta;
|
|
}
|
|
if (DestHeight % 2)
|
|
{
|
|
/* If we had an odd number of lines we handle the center one here */
|
|
DPRINT("Handling Top To Bottom with Odd Number of lines.\n");
|
|
RtlMoveMemory(DestBitsB, SourceBitsT, 4 * DestWidth);
|
|
}
|
|
ExFreePoolWithTag(store, TAG_DIB);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
DPRINT1("DIB_32BPP_BitBltSrcCopy: Unhandled Source BPP: %u\n", BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOLEAN
|
|
DIB_32BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
|
|
RECTL* DestRect, RECTL *SourceRect,
|
|
XLATEOBJ *ColorTranslation, ULONG iTransColor)
|
|
{
|
|
LONG X, Y, SourceX, SourceY = 0, wd;
|
|
ULONG *DestBits, Source = 0;
|
|
|
|
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 = (ULONG*)((PBYTE)DestSurf->pvScan0 +
|
|
(DestRect->left << 2) +
|
|
DestRect->top * DestSurf->lDelta);
|
|
wd = DestSurf->lDelta - ((DestRect->right - DestRect->left) << 2);
|
|
|
|
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++)
|
|
{
|
|
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 ((0x00FFFFFF & Source) != (0x00FFFFFF & iTransColor))
|
|
{
|
|
*DestBits = XLATEOBJ_iXlate(ColorTranslation, Source);
|
|
}
|
|
}
|
|
}
|
|
|
|
DestBits = (ULONG*)((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_32BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
|
|
RECTL* SourceRect, CLIPOBJ* ClipRegion,
|
|
XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
|
|
{
|
|
INT Rows, Cols, SrcX, SrcY;
|
|
register PULONG Dst;
|
|
BLENDFUNCTION BlendFunc;
|
|
register NICEPIXEL32 DstPixel, SrcPixel;
|
|
UCHAR Alpha, SrcBpp;
|
|
|
|
DPRINT("DIB_32BPP_AlphaBlend: SourceRect: (%d,%d)-(%d,%d), DestRect: (%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 = (PULONG)((ULONG_PTR)Dest->pvScan0 + (DestRect->top * Dest->lDelta) +
|
|
(DestRect->left << 2));
|
|
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;
|
|
SrcPixel.col.alpha = (32 == SrcBpp) ?
|
|
(SrcPixel.col.alpha * BlendFunc.SourceConstantAlpha) / 255 :
|
|
BlendFunc.SourceConstantAlpha ;
|
|
|
|
Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
|
|
SrcPixel.col.alpha : BlendFunc.SourceConstantAlpha ;
|
|
|
|
DstPixel.ul = *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) ;
|
|
DstPixel.col.alpha = Clamp8((DstPixel.col.alpha * (255 - Alpha)) / 255 + SrcPixel.col.alpha) ;
|
|
*Dst++ = DstPixel.ul;
|
|
SrcX = SourceRect->left + (Cols*(SourceRect->right - SourceRect->left))/(DestRect->right - DestRect->left);
|
|
}
|
|
Dst = (PULONG)((ULONG_PTR)Dest->pvScan0 + ((DestRect->top + Rows) * Dest->lDelta) +
|
|
(DestRect->left << 2));
|
|
SrcY = SourceRect->top + (Rows*(SourceRect->bottom - SourceRect->top))/(DestRect->bottom - DestRect->top);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* EOF */
|