Strips and glDrawElements

Hi There.

How can I draw several triangle strips, with one single glDrawElements call ?

use degenerated tris.

That is to say ??
I mean what are degenerated tris ? and how can them help me drawing several strips in one sigle glDrawElements call ?

Thanks for replying.

The idea is to use triangles that are degenerate (have zero area) to do things like flip the winding order to allow you to continue stripping over surfaces which you otherwise can’t. You do this by reissuing a duplicate vertex. You could also adjust strip length like this, not sure you’d really want to though.

Thanks !! it works great !