I guess this means for a more complicated surface, the more texture space it requires. Sometimes, we may combine several texture in one data line. Like normal probably only needs RGB, and we could use Alpha channel for other things to save memory traffic.
I guess this means for a more complicated surface, the more texture space it requires. Sometimes, we may combine several texture in one data line. Like normal probably only needs RGB, and we could use Alpha channel for other things to save memory traffic.