There is info on nv.dev about how to render fast to a texture in dx7… but how on opengl? i got it working, but its not so fast…
i use glReadPixels with GL_RGB and GL_UNSIGNED_BYTE
and then glTexSubImage with the same parameters (no! )
pixelalignemends are set to 1… pack and unpack (or whatever)
what can i do with pixeltransfer and these?