I have some code that works well when I first boot my Win 7 machine, but which stops working after my machine has been running for a while (usually more than a day).
I have a very simple FBO with an RGBA color texture and a RenderBuffer depth texture attached. If I attempt to run this after my machine has been up for a while, I get an GL_FRAMEBUFFER_UNSUPPORTED error. If I then reboot my machine, the same code works fine. I also get the same error if I run other programs I've written which use FBOs.
Does this have something to do with Windows sleep mode? Or maybe Firefox or Flash allocating too much from my graphics card? (Sometimes killing Firefox will solve the problem). If anyone has any insights, or maybe a way to tell my graphics card to reset itself without having to reboot, please let me know.