The Compositing engine

After several failed attempts(im not sure why), iv finaly got the basic post compositor effects working in OGREs real time 3D engine.

This with a Radial blur and an Invert filter applied



Then the Invert filter with Black and white



After that i turned off the skybox and changed the background and fog colour to white (which switches to black) and got a similar effect to the Z depth rendering tests done with blenders composite nodes here:
Composite nodes post