R waterwarp
From FTE
Name: r_waterwarp
Default value: "1"
Cvar flags: None
FTEQW Builds: Software Renderer OpenGL Renderer Minimal GL Build Merged Build Linux Build
If set to 1, FTE will do the screen warping thing when underwater.
The OpenGL variant requires a specific extension (arb_shader_objects) which can be found on randeon 8500 and up, and gf-fx or better.