UDK Material - Reflection Glossiness control?

polytim

Is there a way I can control the reflection glossiness?

Right now, the reflections are super sharp and I'd like to have it toned down.

I've tried multiplying it by a constant and that just controls the intensity.

Are there any suggestions or methods I could use to blur my reflection without baking out several mips?

Thanks in advance.

Jacky

Have you tried attaching a constant to Specular Power? That should let you adjust the glossiness.

Money

You could increase the contribution of the normal map to give it more roughness and thereby blur the reflection, see "Distortion Strength" parameter in the material here:

http://udn.epicgames.com/Three/DevelopmentKitGemsCreatingDistortedReflection.html#Creating%20distorted%20metal

Also if your main normal map doesn't have enough roughness in it, use detail normal map strength to increase that roughness detail (more roughness will give more blurry effect). In the material above, main normal map of the floor was enough, so detail normal map strength was set to 0 to disable it's effect.

Ace-Angel

Nope, since you need to blur the cubemap in the first place, which is not possible in RT shaders without exposing the LOD first (cheapest way to get a blurred cubemap) in UDK currently.

So you either box blur the whole cubemap (which is very math heavy), or as Money said, connect an extremely rough, micro faceted Normal Map for your cube and work from there.

You could also setup a blurred PP cube over your reflection capture actor and have it blur through there.

polytim

Ace, what's a PP Cube?

And what if I have my capture cube baked as a static texture already?

Ace-Angel

Put a post-process volume around your reflection actor and set it to a high blur value.

As for static textures baked, I tend to export them out and import them in CubeMapGen, blur the cube and re-import them all back.

polytim

Thank you very much, Ace.