Rendering into FBO at 16-bit fixed point RGBA

OpenGL OpenGL: Advanced Coding
1

Hey, I’m using a Quadro 4800 with driver version 191.00. I’m trying to render into a FBO at 16-bit fixed point RGBA pixel format, using a renderbuffer (not multisampled). All of my error checks indicate this should work fine (no FRAMEBUFFER_UNSUPPORTED errors), but rendering fails when I try. I actually see some corruption occur in my main window.

I can render into a 16-bit fixed point Red Only renderbuffer just fine. 16-bit fixed point Red+Green doesn’t work though.

Anyone have any experience with trying to do this?

Thanks in advance

2

Rendering directly to a 16-bit fixed point RGBA texture seems to work fine, so this seems like an issue with renderbuffers only.