material editor and object work position

ZacD · Jan 2013

I want the plane and the grass to have the same color in the same areas. Basically the material is just 2 noise textures layered on top of each other, I tried to factor in the world position but I am confused how to use it properly, I'm trying to emulate the foliage in Airborn

http://www.polycount.com/forum/showpost.php?p=1719444&postcount=558

+ shader that blends in grass depending on normal and vertexcolor
+ worldspace "lines" for consistent rock feel
+ worldspace grass texture for color variations
+ ground and 3d grass get the same light + color
+ more

Ryan Smith · Jan 2013

Grab a worldspace coordinate node, mask out the R and G values. Divide that by the tile size of the texture (Around 1024 or 512 is usually good). Use that for the UVs of your texture maps that you plug in to your grass and the terrain.

Should work.

Santewi · Jan 2013

World position -> component mask (R+G) -> Divide by a number depending on how large the noise texture is -> plug in to the UVs of your noise texture.

http://i.imgur.com/lOY8s.png

Then just multiply your normal diffuse with the noise texture. Or just use the noise tex as the diffuse.

Ace-Angel · Jan 2013

BTW, UDK already has this setup as a Material-Function, it's called WorldProjectTexturing I think? It's abit more 'complicated' then the ones Ryan and Sant mentioned (you can define what direction projects what, etc.

But yeah, this is how you generally do it.

ZacD · Jan 2013

Okay that works, awesome, I was stupid and was using the object work position instead XD

Santewi · Jan 2013

Ace-Angel wrote: »

BTW, UDK already has this setup as a Material-Function, it's called WorldProjectTexturing I think? It's abit more 'complicated' then the ones Ryan and Sant mentioned (you can define what direction projects what, etc.

But yeah, this is how you generally do it.

Really? I have to check that out then, always interesting to see this kind of stuff :P

material editor and object work position

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