So all those effects are done just using multiple textures and blending them all together? Thats it, nothing really special?
I hope this makes sense, but couldn't I just "pre" blend my special effect textures in photoshop and render them as normal? Why even use the GPU to do this for me?
glBlendFunc(GL_ONE, GL_ONE) usually does it
Could you explain the difference between this and what I have below? I don't truly understand the glBendFunc command. I just know that what I have below allows me to blend textures that use a Alpha channel. Would this work for what I want to do?