public static Texture BlendTopDown(Texture top, Texture down)
{
int h = top.Height;
int w = top.Width;
down.Resize(w, h);
Texture t = new Texture(w, h);
int pos = 0x00;
int x;
uint alpha;
for(int y = 0x00; y < h; y++) {
alpha = (uint)(0xff*y/(top.Height-0x01));
for(x = 0x00; x < top.Width; x++) {
t.Pixel[pos] = ColorUtils.Transparency(down.Pixel[pos], top.Pixel[pos], alpha);
pos++;
}
}
return t;
}
