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{
ulong* anAlphaData = new ulong[mWidth*mHeight];
if (theNumBits == 16)
{
for (int i = 0; i < mWidth*mHeight; i++)
{
ulong val = NEXT_SRC_COLOR;
int anAlpha = val >> 24;
int r = ((val >> 16) & 0xFF) * anAlpha >> 8;
int g = ((val >> 8 ) & 0xFF) * anAlpha >> 8;
int b = ((val ) & 0xFF) * anAlpha >> 8;
anAlphaData[i] =
((((r * theRMask) >> 8) & theRMask) |
(((g * theGMask) >> 8) & theGMask) |
(((b * theBMask) >> 8) & theBMask) |
(anAlpha << 24));
}
}
else if (theNumBits == 32)
{
for (int i = 0; i < mWidth*mHeight; i++)
{
ulong val = NEXT_SRC_COLOR;
int anAlpha = val >> 24;
int r = (((val >> 16) & 0xFF) * anAlpha) >> 8;
int g = (((val >> 8 ) & 0xFF) * anAlpha) >> 8;
int b = (((val ) & 0xFF) * anAlpha) >> 8;
anAlphaData[i] =
(((r * theRMask) >> 8) & theRMask) |
(((g * theGMask) >> 8) & theGMask) |
(((b * theBMask) >> 8) & theBMask) |
(anAlpha << 24);
}
}
mNativeAlphaData = anAlphaData;
}
|
