Without CEGUI:
With CEGUI:
The only difference between those two screenshots is that I am running a call to render CEGUI after I have rendered everything else in my scene and before I call EndScene and Present on D3D. Everything else is the same.
Anyone know what might cause this?
EDIT
It also seems to be messing with my alpha, since when the GUI is rendering, I can see through my terrain like it's partially transparent.
