fBitsPerColor
uint32 fBitsPerColor;
if (fBitsPerColor > 8)
fBitsPerColor = 8;
for (int i = 0; i <= (int)fBitsPerColor; i++)
_AddColor(&fTree, r, g, b, 0, fBitsPerColor, 0, &fLeafCount,
_ReduceTree(fBitsPerColor, &fLeafCount, fReducibleNodes);