Top "Alpha" questions

An alpha channel determines the transparency of an image or view.

OpenGl alpha test - How to replace AlphaFunc deprecated?

I'm trying to draw sphere with alpha, but I have a problem with my Z-buffer. Some pixels are transparent but …

opengl alpha depth-testing
AlphaComposite Transparency with repaint overlaps into black

So I have an image on top of another panel, and that image is transparent so you can see the …

java graphics alpha repaint drawimage
Remove alpha channel from UIImage

I use the following method to get a decompressed uiimage from file system. However the UIImageView is colored as red …

ios uiimageview uiimage alpha cgcontext