opengl framebuffer question.,
Members - Reputation: 122
Posted 16 February 2000 - 10:16 PM
- glReadPixels is s-l-o-w!
- Drawing pixels manually to the card after rendering kills performance, since you break the rendering pipeline
My suggestion is to render to a 24-bit or 32-bit texture, do a glTexImage2D(), and draw a polygon with it.