I'm working on getting Pbuffer support in my application. Basically I just need multiple render targets to do things like bloom, heat shimmer, etc...
Don't forget to try EXT_framebuffer_object.
As a first step, I was messing around with PbufferTest. However I noticed that when using render-to-texture mode, it seems to be kind of borked up. It is just rendering a white rectangle. Is this a known problem?
No, you should be seeing the same thing. Works fine here, so it must be something with your setup. LWJGL version, card model, driver version please?