iPhone Cocos2D - list of blending modes available for a sprite and how to set them

Question

I am googling around to find a list of all blending modes allowed by sprites on Cocos2D, but could not find one. Quartz can do these blending modes, and I am sure Cocos2D can do it too.

• ModeNormal
• ModeMultiply
• ModeScreen
• ModeOverlay
• ModeDarken
• ModeLighten
• ModeColorDodge
• ModeColorBurn
• ModeSoftLight
• ModeHardLight
• ModeDifference
• ModeExclusion
• ModeHue
• ModeSaturation
• ModeColor
• ModeLuminosity

The only one I could find on google was "additive", that I think is screen. That is set like this:

[proxy setBlendFunc: (ccBlendFunc) { GL_SRC_ALPHA, GL_ONE }];  // example of additive blending

I am not even sure if this is screen.

So, where do I find such a list and instructions on how to set each one?

thanks.

Answer 1

You will find a detailed description of OpenGL blend modes here. And if you want to try things out, there's a wonderful visual glBlendFunc online tool.