I tried to duplicate the layer repeatedly, but the layer has some different levels of transparency, hence becoming a big black mess. Why does separation of variable gives the general solution to a PDE. Create a free website or blog at WordPress.com. Is there a mask present? And because this alpha channel is 8-bit, 256 levels, it can have 256 levels of transparency from black/100% transparent to white/100% opaque. Alpha channels are usually used with 16.8M color RGB images. How is it possible that a