GL_DEPTH_CLAMP_NV

Does Ati support a similar extension ?

Nope

Too bad, i think it’s one of the most important ones, i hope they will introduce it one day.

I guess current hardware doesn’t support it, but I don’t know for sure.

i don’t see how it is THAT important… i see uses, of course…

I find it very useful to eliminate artifacts in case you have a very small minimum clip distance and a very high max. clip distance.