Hi,

I want to render billboarded polygons that do not change their size as z-depth changes. I know how to do billboarding and that is not the problem.

I tried transforming my vertices by the inverse of the projection matrix. I figure

inverse§ * vertex = vertex’

P * M * vertex’ = clip_coordinates

but that gives some weird results (of course!).

Anyone see an easy solution to this?

V-man