[EXPERIMENTAL] 26w24b: Terrain Shader FPS improvement — Starship EVO Steam update #578396

So the per-triangle virtual textures turned out to be too complex, and the final gains too limited to justify the cost.I decided to kill them and went back to the drawing board to deliver those much needed FPS improvements.I tweaked and improved the terrain shader: we jumped from 70 to 95 fps (from 50 fps two months ago!). Still sensible gains!The look will be a bit different, but it will actually look better from afar.Planet Texture:I also added a setting for the planet texture generation, which give planets a hd looks when viewed from space. The new high settings makes the planets looks twice better!Thanks for playing!