Non-linear texture transformations with texture shaders

Hi guys!
I want made non-linear distorsion correction of my rendred image. So I render scene copy it to back buffer and after that I need to apply transformations. Maybe you give me some advices or links how to made this.

Render your scene to a texture (or copy it there) and then apply any distortion you like on a textured polygonal mesh to the backbuffer. I’ve done this very successfully in the past:…ie&RS=IN/dorbie…mi+AND+IN/arnau d&RS=IN/remi+AND+IN/arnaud

[This message has been edited by dorbie (edited 03-26-2003).]