I've got a small problem. I use a 3D noise texture now, but for some reason the application hangs when I do more than 3 lookups in the texture. I'm trying to do a cloudy sky and would like to use 4-5 octaves of this pregenerated noise. At first I thought that maybe there's a limitation on number of lookups per texture unit, so I bound the texture object to texture units 0-3, but with the same result.
Has anyone encountered any such limitation?
Radeon 9800 Pro, Catalyst 4.4