Converting SpecularSmoothness maps to MetallicRoughness?

armagon

I'm transporting assets from Unity to another engine that uses the Metallic flow. Most Unity maps are a single PNG/TGA with SpecularSmoothness maps, I'm guessing Specular in R, Smoothness in G and AO in B. Is there a tool that allows me to convert those to RMAO? Roughness, Metallic and AO.

Eric Chadwick

Again, earthquake's tutorial is an excellent rundown.

https://marmoset.co/posts/pbr-texture-conversion/

armagon

This tool helped me a lot: https://iivietal.gumroad.com/l/qsqnE

You can buy it and use Substance Player to run it, which is a free tool.