I would want to achieve an effect like a mozaik, eg. 4 times the original scene in the window.... How would this be done with opengl? or should i render to an offscreen buffer and compose the image myself? tanx in advance Tom

You mean like rendering to a bitmap an entire scene even if particular parts of that scene are not visible in the current camera position?

I would render to a texture then render polys with that texture to the back buffer.

---

Helpful links:
How To Ask Questions The Smart Way | Google can help with your question | Search MSDN for help with standard C or Windows functions