Is it possible to use compositing for the BGE?
As far as I know it isn’t unfortunately, but I’m sure you can make some pretty awesome effects by other means.
The BGE doesn’t support the compositor, but it does have support for 2D filter effects through the logic bricks (the 2D filter actuator).
You can either choose from a list of built-in effects or code your own using the GLSL API.
You can’t composite then bake that into a texture or something and use it that way?
Well, thanks… Does the 2D filter do lens flare?