I see a way to set the blending mode like the glBlendFunc in OpenGL, but I don't see any way to set the equivelent of a glBlendFunction. I wonder if this will ever be supported? Would only require one more function, with some settings. It would be helpful to create blend mode effects like subtractive blending. Say if I wanted to subtract the source color from the destination color.
Recently I have been learning about shaders, and didn't realize that they have no influence on the blending the source and destination colors part of the graphics pipeline, which means blending options are rather limmited.
I wonder if there is a workaround, say like, using a texture as a frame buffer and using it as an input texture to a shader.
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