Layering multiple textures for terrain?

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  01 January 2013
Layering multiple textures for terrain?

Say I want one area of a plane to be fields, one to be crops, one to be dirt. Is there a way to assign a colour to each texture, and paint a mask with the 3 different colours to define where each texture will show on the geometry?

If not, can anyone go into more detail regarding what the guy in this thread means? He answers a similar problem to mine, but directs the guy asking to the help files, which I've looked in and can't see anything about how to use alphas to blend layered textures.
  01 January 2013
Not natively I think... of the top of my head, you could try to separate out your RGB mask with RGB to HSV node and use each one as mask for layer shader or blend color. Easier to just use B&W mask tho.
  01 January 2013
Hmm nevermind my original idea then.

What would be the best way though to achieve a result like I'm looking for (quiltwork of farmland with 3 or more textures)?
  01 January 2013
Sorry I did a little research and I found this. Might be what you're looking for.
  01 January 2013
Originally Posted by Panupat: Sorry I did a little research and I found this. Might be what you're looking for.

Definitely you can do it and even in several ways. You can use layered texture with mask created outside maya, blending multiple textures according to mask. Or the image that contains your last link, you can achieve that output also having several UV sets. If you like this may help
  01 January 2013
yes, lots of ways, vray specific, layered mia mr specific, or just plain old maya renderer, there are workflows for each. Sounds like you switched to plan A, but let me know if you need a node editor snapshot.
  01 January 2013
I wrote a blog post about how to do this:


I use that workflow all the time to paint mix terrain materials for variety. If you want to mix more than two textures, just add another blend color node and plug the other blend color into that.
  01 January 2013
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