In GLSL, on a card with PS2.0 support only (x800xt). Is it possible to access a texture value from a vertex shader? (as opposed to a fragment shader). (Under GLSL in particular). I get linking errors when I attempt this. I guess usually you don't need texture values in the vertex shader. I was just hoping I use a texture as a lookup table to store some values :-/

No, that's a feature of SM 3.0 (ie: only the nvidia 6 series cards can do that for now).

cool thanks

oh well back to trying to access values in uniform arrays using a non-constant index...gaaaah why so slow