> Hi,
>
> I'm trying to get started on the use of framebuffers and so I figured I'd try
> write a simple program which just draws to a new framebuffer and then draws
> that to the screen/main framebuffer. The issue is that it appears to only draw
> the colour that I cleared the framebuffer to, not the geometry.
>
> Let me be a little more specific. On my framebuffer I clear to blue, and then
> draw 2 overlapping squares. I then clear the screenbuffer to red and draw the
> contents of the framebuffer to screen-sized quad. What I end up with is an
> entirely blue screen :<
>
> I know that it is in fact drawing *something* from the FBO because the screen
> is blue, not red. I am also sure that the geometry is indeed getting drawn to
> the framebuffer because if I print out the pixel contents of that texture, I
> can see the 2 squares. If I make it draw directly to the screen instead of the
> FBO, I get the correct image.
>
> I am completely stumped, I've been trying to work at this for ages now but to
> no avail so if anybody has anything that might help I would be most appreciative.
>
> Code: http://pastebin.com/B3WwLvKz (Shows the correct image if you comment out
> lines 82, 92, 97-114)
> Shaders: http://pastebin.com/7ufxtjd9