MakeGradient
fGradient->MakeGradient((uint32*)temp, width);
fGradient->MakeGradient((uint32*)topRow, width);
void MakeGradient(uint32* colors,
fGradient->MakeGradient((uint32*)fColors, 256);
fGradient->MakeGradient((uint32*)fColors, 256);