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https://github.com/reactos/reactos.git
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[WIN32K]
- Rewrite NtGdiStretchDIBitsInternal : clearer, faster, stronger (+1 wine test) svn path=/branches/reactos-yarotows/; revision=48465
This commit is contained in:
Jérôme Gardou
parent
96444b43c2
commit
3f5d90a47a
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@ -290,7 +290,7 @@ IntSetDIBits(
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if(!(psurfSrc && psurfDst))
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{
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DPRINT1("Error, could not lock surfaces.\n");
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DPRINT1("Error, could not lock surfaces\n");
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goto cleanup;
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}
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@ -663,15 +663,15 @@ NtGdiGetDIBitsInternal(
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if(pbmci)
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{
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pbmci->bmciHeader.bcWidth = psurf->SurfObj.sizlBitmap.cx;
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pbmci->bmciHeader.bcHeight = (psurf->SurfObj.fjBitmap & BMF_TOPDOWN) ?
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-psurf->SurfObj.sizlBitmap.cy :
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pbmci->bmciHeader.bcHeight = (psurf->SurfObj.fjBitmap & BMF_TOPDOWN) ?
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-psurf->SurfObj.sizlBitmap.cy :
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psurf->SurfObj.sizlBitmap.cy;
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pbmci->bmciHeader.bcPlanes = 1;
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pbmci->bmciHeader.bcBitCount = BitsPerFormat(psurf->SurfObj.iBitmapFormat);
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}
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Info->bmiHeader.biWidth = psurf->SurfObj.sizlBitmap.cx;
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Info->bmiHeader.biHeight = (psurf->SurfObj.fjBitmap & BMF_TOPDOWN) ?
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-psurf->SurfObj.sizlBitmap.cy :
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Info->bmiHeader.biHeight = (psurf->SurfObj.fjBitmap & BMF_TOPDOWN) ?
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-psurf->SurfObj.sizlBitmap.cy :
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psurf->SurfObj.sizlBitmap.cy;;
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Info->bmiHeader.biPlanes = 1;
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Info->bmiHeader.biBitCount = BitsPerFormat(psurf->SurfObj.iBitmapFormat);
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@ -711,15 +711,15 @@ NtGdiGetDIBitsInternal(
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case 8:
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Info->bmiHeader.biClrUsed = 0;
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/* If the bitmap if a DIB section and has the same format than what
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/* If the bitmap if a DIB section and has the same format than what
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* we're asked, go ahead! */
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if((psurf->hSecure) &&
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if((psurf->hSecure) &&
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(BitsPerFormat(psurf->SurfObj.iBitmapFormat) == bpp))
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{
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if(Usage == DIB_RGB_COLORS)
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{
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unsigned int colors = min(psurf->ppal->NumColors, 1 << bpp);
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if(pbmci)
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{
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for(i=0; i < colors; i++)
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@ -773,7 +773,7 @@ NtGdiGetDIBitsInternal(
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rgbTriples[i].rgbtGreen = pDcPal->IndexedColors[i].peGreen;
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rgbTriples[i].rgbtBlue = pDcPal->IndexedColors[i].peBlue;
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}
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rgbQuads[i].rgbRed = pDcPal->IndexedColors[i].peRed;
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rgbQuads[i].rgbGreen = pDcPal->IndexedColors[i].peGreen;
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rgbQuads[i].rgbBlue = pDcPal->IndexedColors[i].peBlue;
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@ -822,7 +822,7 @@ NtGdiGetDIBitsInternal(
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{
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for(g = 0; g <= 5; g++)
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{
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for(b = 0; b <= 5; b++)
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for(b = 0; b <= 5; b++)
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{
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colorTriple->rgbtRed = (r * 0xff) / 5;
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colorTriple->rgbtGreen = (g * 0xff) / 5;
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@ -935,7 +935,7 @@ NtGdiGetDIBitsInternal(
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/* Restore them */
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Info->bmiHeader.biWidth = width;
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Info->bmiHeader.biHeight = height;
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if(!hBmpDest)
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{
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DPRINT1("Unable to create a DIB Section!\n");
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@ -972,7 +972,7 @@ NtGdiGetDIBitsInternal(
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_SEH2_TRY
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{
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RtlCopyMemory(Bits, pDIBits, DIB_GetDIBImageBytes (width, height, bpp));
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}
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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@ -1021,95 +1021,104 @@ NtGdiStretchDIBitsInternal(
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UINT cjMaxBits,
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HANDLE hcmXform)
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{
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HBITMAP hBitmap, hOldBitmap = NULL;
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HDC hdcMem = NULL;
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PDC pdc;
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INT ret = 0;
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LONG height;
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LONG width;
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WORD planes, bpp;
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DWORD compr, size;
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HBITMAP hBitmap;
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BOOL fastpath = FALSE;
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NTSTATUS Status = STATUS_SUCCESS;
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PVOID pvDIBits;
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INT Ret = 0;
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if (!Bits || !BitsInfo)
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return 0;
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if (!(pdc = DC_LockDc(hDC))) return 0;
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_SEH2_TRY
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{
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SetLastWin32Error(ERROR_INVALID_PARAMETER);
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ProbeForRead(BitsInfo, cjMaxInfo, 1);
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ProbeForRead(Bits, cjMaxBits, 1);
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if (DIB_GetBitmapInfo( &BitsInfo->bmiHeader, &width, &height, &planes, &bpp, &compr, &size ) == -1)
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{
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DPRINT1("Invalid bitmap\n");
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Status = STATUS_INVALID_PARAMETER;
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}
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END
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if(!NT_SUCCESS(Status))
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{
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DPRINT1("Error, failed to read the DIB bits\n");
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goto cleanup;
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}
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if (width < 0)
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{
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DPRINT1("Bitmap has a negative width\n");
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return 0;
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}
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/* Create a DIB Section, data will be probed there */
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hBitmap = NtGdiCreateDIBSection(hDC,
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NULL,
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0,
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BitsInfo,
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Usage,
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0,
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0,
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0,
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&pvDIBits);
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hBitmap = NtGdiGetDCObject(hDC, OBJ_BITMAP);
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if(!hBitmap)
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{
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DPRINT1("Failed to create a DIB.\n");
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return 0;
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}
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if (XDest == 0 && YDest == 0 && XSrc == 0 && XSrc == 0 &&
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DestWidth == SrcWidth && DestHeight == SrcHeight &&
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compr == BI_RGB &&
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ROP == SRCCOPY)
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{
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BITMAP bmp;
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if (IntGdiGetObject(hBitmap, sizeof(bmp), &bmp) == sizeof(bmp))
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{
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if (bmp.bmBitsPixel == bpp &&
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bmp.bmWidth == SrcWidth &&
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bmp.bmHeight == SrcHeight &&
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bmp.bmPlanes == planes)
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fastpath = TRUE;
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}
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}
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/* Set bits */
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_SEH2_TRY
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{
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ProbeForRead(Bits, cjMaxBits, 1);
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RtlCopyMemory(pvDIBits, Bits, DIB_GetDIBImageBytes(BitsInfo->bmiHeader.biWidth,
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BitsInfo->bmiHeader.biHeight,
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BitsInfo->bmiHeader.biBitCount));
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END
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if (fastpath)
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{
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/* fast path */
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DPRINT1("using fast path\n");
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ret = IntSetDIBits( pdc, hBitmap, 0, height, Bits, BitsInfo, Usage);
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}
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else
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{
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/* slow path - need to use StretchBlt */
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HBITMAP hOldBitmap;
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HPALETTE hpal = NULL;
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HDC hdcMem;
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PVOID pvBits;
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if(!NT_SUCCESS(Status))
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{
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DPRINT1("Error : Could not read DIB bits\n");
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SetLastNtError(Status);
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goto cleanup;
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}
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hdcMem = NtGdiCreateCompatibleDC(0);
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if(!hdcMem)
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{
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DPRINT1("Failed to create a memory DC!");
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goto cleanup;
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}
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hOldBitmap = NtGdiSelectBitmap(hdcMem, hBitmap);
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if(!hOldBitmap)
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{
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DPRINT1("Could not select the DIB into the memory DC\n");
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goto cleanup;
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}
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/* Do we want to stretch ? */
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if((SrcWidth == DestWidth) && (SrcHeight == DestHeight))
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{
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Ret = NtGdiBitBlt(hDC, XDest, YDest, XDest + DestWidth, YDest + DestHeight,
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hdcMem, XSrc, YSrc, ROP, 0, 0);
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}
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else
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{
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Ret = NtGdiStretchBlt(hDC, XDest, YDest, XDest + DestWidth, YDest + DestHeight,
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hdcMem, XSrc, YSrc, XSrc + SrcWidth, YSrc + SrcHeight,
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ROP, 0);
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}
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if(Ret)
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Ret = SrcHeight ;
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hdcMem = NtGdiCreateCompatibleDC( hDC );
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hBitmap = DIB_CreateDIBSection(pdc, BitsInfo, Usage, &pvBits, NULL, 0, 0);
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RtlCopyMemory(pvBits, Bits, cjMaxBits);
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hOldBitmap = NtGdiSelectBitmap( hdcMem, hBitmap );
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/* Origin for DIBitmap may be bottom left (positive biHeight) or top
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left (negative biHeight) */
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ret = NtGdiStretchBlt( hDC, XDest, YDest, DestWidth, DestHeight,
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hdcMem, XSrc, abs(height) - SrcHeight - YSrc,
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SrcWidth, SrcHeight, ROP, 0 );
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if(hpal)
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GdiSelectPalette(hdcMem, hpal, FALSE);
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if(ret)
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ret = SrcHeight;
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NtGdiSelectBitmap( hdcMem, hOldBitmap );
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NtGdiDeleteObjectApp( hdcMem );
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GreDeleteObject( hBitmap );
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}
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cleanup:
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if(hdcMem)
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{
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if(hOldBitmap) NtGdiSelectBitmap(hdcMem, hOldBitmap);
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NtGdiDeleteObjectApp(hdcMem);
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}
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GreDeleteObject(hBitmap);
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return Ret;
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DC_UnlockDc(pdc);
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return ret;
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}
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@ -1462,7 +1471,7 @@ DIB_CreateDIBSection(
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hpal = (HPALETTE) 0xFFFFFFFF;
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}
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}
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else
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else
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{
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hpal = BuildDIBPalette(bmi);
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}
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@ -1563,7 +1572,7 @@ cleanup:
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* Get the info from a bitmap header.
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* Return 0 for COREHEADER, 1 for INFOHEADER, -1 for error.
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*/
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int
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int
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FASTCALL
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DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
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LONG *height, WORD *planes, WORD *bpp, DWORD *compr, DWORD *size )
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@ -1575,7 +1584,7 @@ DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
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*height = core->bcHeight;
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*planes = core->bcPlanes;
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*bpp = core->bcBitCount;
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*compr = 0;
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*compr = BI_RGB;
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*size = 0;
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return 0;
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}
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@ -1692,10 +1701,10 @@ DIB_MapPaletteColors(PPALETTE ppal, CONST BITMAPINFO* lpbmi)
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ppalEntries[i].peBlue = 0;
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ppalEntries[i].peFlags = 0;
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}
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lpIndex++;
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}
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hpal = PALETTE_AllocPalette(PAL_INDEXED, nNumColors, (ULONG*)ppalEntries, 0, 0, 0);
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ExFreePoolWithTag(ppalEntries, TAG_COLORMAP);
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