UDK - How to set up 4 textures in Vertex Painting.

Mr Significant · Aug 2013

Hey! I need some help. How to set up 4 different textures with vertex painting? I mean I can set up 2 different textures, and this is for the red channel: ctrl to paint with one texture and ctrl + shift to erase this texture. And thats 2 textures. But I want 3rd and 4rth texture in my Vertex Paint, which is Blue and green channel and don't know which node I have to use. That's not working:

any help?

Santewi · Aug 2013

Can't you just lerp between tex 3 and the two textures from red using vertex color green? And then the same for tex 4, where you lerp between the already lerped 3 textures and tex 4 using blue?

mAlkAv!An · Aug 2013

The default vertex color is white which might the reason why that setup is not working. You should paint your mesh black for the first texture and afterwards red, green, blue for the 2nd, 3rd and 4th one.

Mr Significant · Aug 2013

nah, nothing works. Any shader reference pic? that should be easier.

m4dcow · Aug 2013

mAlkAv!An is right in his subsequent post, the info below is wrong, something was screwy with how I was painting my vert colors.

With the setup you have, the green and blue vertex color LERPS which I assume are further down the chain, are dependent on where you have painted red.

So what you have to do with this setup, is wherever you want to paint the green channel, you need to paint with red+green (Yellow), wherever you want to paint the blue texture paint with red+green+blue (White).

You can setup how the textures blend differently, but this is why your setup isn't working as desired.

mAlkAv!An · Aug 2013

No, the setup is fine and does work with absolute RGB values. Yellow would simply give you a 1 to 1 blend between 2 textures.
http://h9.abload.de/img/udkvertexblend1cmlmd.jpg
http://h9.abload.de/img/udkvertexblend2o8aks.jpg

Mr Significant · Aug 2013

AWW! mAlkAv!An taht's works!!!! I just had wrong setup my vertex color, look:

And here it is :>

SOLVED!

UDK - How to set up 4 textures in Vertex Painting.

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