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[WIN32K]

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Modify DIB_MapPaletteColors, first allocating a palette without initializing the colors, then setting up the colors. This wway we don't need to allocate an intermediate buffer.

svn path=/trunk/; revision=56474
This commit is contained in:
Timo Kreuzer 2012-05-02 10:09:05 +00:00
parent e90543ae55
commit 7be39c2aba
1 changed files with 10 additions and 11 deletions
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21
reactos/win32ss/gdi/ntgdi/dibobj.c
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@ -1725,14 +1725,14 @@ INT FASTCALL DIB_BitmapInfoSize(const BITMAPINFO * info, WORD coloruse)
HPALETTE
FASTCALL
DIB_MapPaletteColors(PPALETTE ppal, CONST BITMAPINFO* lpbmi)
DIB_MapPaletteColors(PPALETTE ppalDc, CONST BITMAPINFO* lpbmi)
{
PALETTEENTRY* ppalEntries;
PPALETTE ppalNew;
ULONG nNumColors,i;
USHORT *lpIndex;
HPALETTE hpal;
if (!(ppal->flFlags & PAL_INDEXED))
if (!(ppalDc->flFlags & PAL_INDEXED))
{
return NULL;
}
@ -1743,10 +1743,10 @@ DIB_MapPaletteColors(PPALETTE ppal, CONST BITMAPINFO* lpbmi)
nNumColors = min(nNumColors, lpbmi->bmiHeader.biClrUsed);
}
ppalEntries = ExAllocatePoolWithTag(PagedPool, sizeof(PALETTEENTRY) * nNumColors, TAG_COLORMAP);
if (ppalEntries == NULL)
ppalNew = PALETTE_AllocPalWithHandle(PAL_INDEXED, nNumColors, NULL, 0, 0, 0);
if (ppalNew == NULL)
{
DPRINT1("Could not allocate palette entries\n");
DPRINT1("Could not allocate palette\n");
return NULL;
}
@ -1754,14 +1754,13 @@ DIB_MapPaletteColors(PPALETTE ppal, CONST BITMAPINFO* lpbmi)
for (i = 0; i < nNumColors; i++)
{
ppalEntries[i] = ppal->IndexedColors[*lpIndex % ppal->NumColors];
ULONG iColorIndex = *lpIndex % ppalDc->NumColors;
ppalNew->IndexedColors[i] = ppalDc->IndexedColors[iColorIndex];
lpIndex++;
}
hpal = PALETTE_AllocPalette(PAL_INDEXED, nNumColors, (ULONG*)ppalEntries, 0, 0, 0);
ExFreePoolWithTag(ppalEntries, TAG_COLORMAP);
hpal = ppalNew->BaseObject.hHmgr;
PALETTE_UnlockPalette(ppalNew);
return hpal;
}