Overview

CCNode objects that uses a Texture2D to render the images. The texture can have a blending function. If the texture has alpha premultiplied the default blending function is:

src=GL_ONE dst= GL_ONE_MINUS_SRC_ALPHA

else

src=GL_SRC_ALPHA dst= GL_ONE_MINUS_SRC_ALPHA

But you can change the blending function at any time.