Hi there! I have been looking over the net for a while now but I didn't find an answer to this question: Is it possible to do additive blending over a single channel of a texture while processing the others channels without blending ?

I am implementing shadow maps for my particle system and I'd like to merge the opaque shadow map (doesn´t need blending) with the translucency map (needs blending) to avoid doing 2 texture samples.

Any info is appreciated!

Thanks for your time

Thanks it worked perfectly! :)