SiS:
I added the GL_EXT_texture_lod_bias extension to the SiS DRI driver last night. It was fun to be successful in implementing a feature without docs (well, I had two bitmasks to deal with, but not the format of the bits in the important one). Fixed two out of the seven broken texenv modes. Disabled the broken 3d clearing code that could make things faster but so far just makes things not work. The code now passes a couple more glean tests, and would pass several more if glean was just a little bit less strict. I'm thinking about adding a general "allow an additional bit of error" option for glean, but not sure how I would go about implementing it. Started submitting patches to glean, which I hope to continue to do.