Originally Posted by Zop
Thanks for the link. Quake1 textures are missing data that is expected in a modern engine, so there is a hurdle beyond adding a graphics enhancement. However, I believe some enhancements could be added (and may already be?) like tonemapping, or with a little work, temporal anti-aliasing.
Some of these things have been added with fan-made textures (normal maps, gloss maps, etc).