Post Process volume, Activating it while outside of the area?

[Mike5424]

Basically i'm making a side scroller and need to use post processing to blur the under water area and create the effect that there is a body of water there. The problem i'm having is that the post processing volume doesn't activate untill the player is inside of the area. Thanks for any help.

[Xoliul]

You can't do local postprocessing (just a part of your screen) with volumes. Not sure if you can even do this without c++ coding, as you probably would need a new rendertarget to mask out the underwater areas...

[Mike5424]

Damn, Thanks anyway Xoliul. Does anyone know any other way of creating a body of water for a side scroller instead of just having a fake looking plane of water?

[Ben Apuna]

Maybe one plane facing the camera with a distortion shader and another plane facing the sky with a water surface shader (reflection, ripples, etc...).

EDIT:

Both of those shaders would be animated to simulate flowing water...

[Froyok]

Don't use the UDK Novemebr 2010 beta. This version have a bug in the post-processing volume (the colorgrading don't work). It's will be fixed in the next beta.

[Mike5424]

Thanks Ben! Worked great!

Froyok, Really? Damn, I was just about to update, I've a few versions behind so I guess i'll download the october version instead. Thanks for the warning

[Froyok]

Yeah, in the official epic thread of the november beta they confirmed this bug, it is solved now in the december beta.