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Custom Colour for Dirty & Worn Paint?

Hello. I'm wondering what would be the most performance efficient way to mask out paint on an object so that I can give it a custom colour within a material instance. What complicates things is that there's subtle dirt and such on this paint, which is brown, so I can't simply use a mask texture for the paint and hope to still have the dirt colour after I multiply/lerp. Only thing I can think of is having to create a mask for the dirt and add it on top of a clean version within the material, I'm wondering if there are more simple and cheaper methods?

Product Version: UE 4.16
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asked Aug 30 '17 at 05:28 PM in Rendering

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Geosmith Tech.
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I basically just rearranged the way I put things.

Rather than masking the paint out of the final texture, I used a vector 3 and masked out the edge wear and dirt from my texture and placed that on top of the colour.

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answered Aug 30 '17 at 06:35 PM

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Geosmith Tech.
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