I'd really like to land this for 7.11---apparently Wine applications really want GL_ARB_shader_texture_lod in place for SM3 shaders.
The extension adds two parts: textureLod in the fragment shader, and textureGrad in both targets. Lod works fine. Grad...is tricky. Much more testing is required. So far, I've run Marek's piglit test (arb_shader_texture_lod-texgrad) on Sandybridge and Ivybridge. One pixel fails the probe (Eric thinks it's due to a pre-existing bug in our dFdy implementation), but visually it looks correct. So I think color buffers work fine. Unfortunately, shadow2DGrad and depth textures are where all the madness comes into play. It's very likely broken, especially on pre-Ivybridge. But that's sooo niche. :) Anyway, I figured some initial review wouldn't hurt. Better than letting this code languish any longer. --Kenneth _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
