glScissor

[holy_moly]

hi,
i want to know the usual ways to "forbid" opengl to render stuff which is outside of the screen to get more speed(why should i render invisible things anyway?)
i read about glScissor but i can't figure it out.
just let me know how you do it,thanks

[fenris]

glScissor() is used to clip a region in the viewport. OpenGL will automatically clip anything that is trying to be drawn outside of the viewport set by glViewport().

[fshana]

I've found glScissor to be kind of redundant, glViewport does everything I need.
fs
http://fshana.tripod.com