[rtpg]

I think it's because PC games know they need to deal with compilation, so they do it on the load screen or whatever. GC games can pre-compile them and just stuff it on the disk, so there's no compilation cost.

[pjmlp]

GC shaders are loosely based on GLSL, and OpenGL compilation model, even though GX(2) isn't OpenGL.

[Jasper_]

No, GameCube's TEVs have nothing to do with GLSL. The reference to GX2 implies you're confusing it with Wii U, inexplicably.

[pjmlp]

Yes I mixed them with Wii and Wii U,no need for "inexplicably" remark.