I’m using a GTX980 on Linux with driver version 346.47. I’m trying to access a
texture with precomputed gradients in a compute pass, however it seems like the
derivative in y-direction seems to be ignored. Setting the x-gradient to
arbitrary values changes the result, while setting the y-gradient to very high/low
values does not show any effect.
I mistakenly wrote about textureLod, when infact I meant the textureGrad function.