UDK water shader help

moondog760 · Nov 2011

Hey guys so I'm having some issues with creating a reflective water shader in UDK (may). I have the scene capure reflect actor placed in the scene with a TextureRenderTarget2d plugged into it. Here are pics of the material setup:

for some reason the water is all green, while the actual reflected image is merely a tiny square that can only be seen if you get really close to the water. What am I doing wrong?

moondog760 · Nov 2011

Well apparently when I check the "screen align" box on the ScreenPos node, this makes the reflected image to be the proper size But now I'm having a new issue. The reflected image seems to just be a box with green all around it. I'm trying to create a water surface that truly reflects the environment around it, but this is just reflecting a square image that is aligned to the player's view. Here's a pic:

Norron · Nov 2011

http://udn.epicgames.com/Three/DevelopmentKitGemsCreatingDistortedReflection.html#Why%20are%20there%20bright%20green%20areas%20in%20my%20reflections?

This seems to have the solution for that. I guess it's a problem with the reflection using too much of the target texture space and the green is the color that gets filled into the surrounding space.

moondog760 · Nov 2011

Thanks, I was looking at that earlier. I'm going to give it a shot in a little while

moondog760 · Nov 2011

Ok so a friend from school showed me somewhat of a solution. I'm now able to make a mirror like reflective surface, only now I have a new problem. I cant get the normal maps to distort the reflection. I just want to make water that reflects its environment and uses normal maps to distort the reflection. Why does this have to be so hard to figure out. Here's a pic of the setup I have at the moment.

UDK water shader help

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