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Don't compute absolute values after squaring.

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svn path=/trunk/; revision=4033
This commit is contained in:
Eugene Ingerman 2003-01-18 20:44:34 +00:00
parent 3b71d9191e
commit b8049283dc
1 changed files with 3 additions and 13 deletions
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16
reactos/subsys/win32k/eng/xlate.c
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@ -32,16 +32,6 @@ ULONG BGRtoULONG(BYTE Blue, BYTE Green, BYTE Red)
return ((Blue & 0xff) << 16) | ((Green & 0xff) << 8) | (Red & 0xff); return ((Blue & 0xff) << 16) | ((Green & 0xff) << 8) | (Red & 0xff);
} }
INT abs(INT nm)
{
if(nm<0)
{
return nm * -1;
} else
{
return nm;
}
}
// FIXME: If the caller knows that the destinations are indexed and not RGB // FIXME: If the caller knows that the destinations are indexed and not RGB
// then we should cache more than one value. Same with the source. // then we should cache more than one value. Same with the source.
@ -68,9 +58,9 @@ ULONG ClosestColorMatch(ULONG SourceColor, ULONG *DestColors,
{ {
cDestColors = (PVIDEO_CLUTDATA)&DestColors[i]; cDestColors = (PVIDEO_CLUTDATA)&DestColors[i];
cxRed = abs(cSourceColor->Red - cDestColors->Red) ^ 2; cxRed = (cSourceColor->Red - cDestColors->Red) ^ 2;
cxGreen = abs(cSourceColor->Green - cDestColors->Green) ^ 2; cxGreen = (cSourceColor->Green - cDestColors->Green) ^ 2;
cxBlue = abs(cSourceColor->Blue - cDestColors->Blue) ^ 2; cxBlue = (cSourceColor->Blue - cDestColors->Blue) ^ 2;
rt = /* sqrt */ (cxRed + cxGreen + cxBlue); rt = /* sqrt */ (cxRed + cxGreen + cxBlue);