Assuming you use the same texture coordinates, sampling a rgb a sampler or a bunch of grayscale packed doesn't make any difference, it's a single tex2d() operation. The best place to store grayscale info in dxt would be the alpha of dxt5, since it is compressed independently from other channels. If you'd use the red…
Hello polycounters, I made sure I checked the search function before posting this so I think im good, then again I could fail super hard at the interwebs and it could have been the first search result and I was just too dumb to realize it. Anyway I have a model that I wish to glow using an emissive. Did the whole jazz of…