-\r_glsl_deluxemapping\Use per-pixel lighting effects (default: enabled)
-\r_shadow_gloss\Enable the use of glossmaps on textures supporting it (default: enabled)
-\gl_flashblend\Enable faster but uglier dynamic lights by rendering bright coronas instead of real dynamic lights (default: disabled)
-\r_shadow_realtime_dlight\Enable rendering of dynamic lights such as explosions and rocket lights (default: enabled)
-\r_shadow_realtime_dlight_shadows\Enable rendering of shadows from dynamic lights (default: disabled)
-\r_shadow_realtime_world\Enable rendering of full realtime world lighting on maps that support it. Note that this might have a big impact on performance. (default: disabled)
-\r_shadow_realtime_world_shadows\Enable rendering of shadows from realtime world lights (default: disabled)
-\r_shadow_usenormalmap\Enable use of directional shading on textures (default: enabled)
-\r_showsurfaces\Disable textures completely for very slow hardware. This gives a huge performance boost, but looks very ugly. (default: disabled)
-\r_glsl_offsetmapping\Offset mapping effect that will make textures with bumpmaps appear like they "pop out" of the flat 2D surface (default: disabled)
-\r_glsl_offsetmapping_reliefmapping\Higher quality offset mapping, which also has a huge impact on performance (default: disabled)
-\r_water\Reflection and refraction quality, has a huge impact on performance on maps with reflecting surfaces (default: disabled)
-\r_water_resolutionmultiplier\Resolution of reflections/refractions (default: good)
-\r_coronas\Enable corona flares around certain lights (default: enabled)
-\r_coronas_occlusionquery\Fade coronas according to visibility (default: enabled)
-\r_bloom\Enable bloom effect, which brightens the neighboring pixels of very bright pixels. Has a big impact on performance. (default: disabled)