Based on Q2 3.21 source

RScript - Texture rendering scripts

Ability to use .cin cinematic files as textures

Vertex arrays in use in some areas of the renderer

Continuous frame export (dumps a screenshot every frame to /gamename/animdump)

GeForce3 enhanced water-warp (reverts to old waterwarp if texture shaders are not supported)

Texture Compression ('gl_ext_texture_compression 1' at the console, disabled by default)

Replaced missing texture image

JPEG image file support

Texture loading

Screenshots in JPEG format