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1. Convert PBR to Source Traditional Diffuse/Normal/Spec?

   

   Topic by armagon · Nov 2022 · Home› Technical Talk

   Does anyone know any Substance tool, or standlone tool, that allows me to convert a PBR, in either SpecGloss or RoughnessMetallic, to Source's traditional Diffuse/Normal/Spec maps?

2. Re: Convert PBR to Source Traditional Diffuse/Normal/Spec?

   

   

   Reply by FrankPolygon · Nov 2022 · Home› Technical Talk

   @armagon Substance painter can bake the combined material channels and view port lighting to a single RGB texture. Just use the 2D view output from the list of converted maps in the output template tab. There should be a trial version of Substance Painter available on Adobe's site. 11/15 Addendum: Existing PBR textures,…

3. Re: Convert PBR to Source Traditional Diffuse/Normal/Spec?

   

   Reply by armagon · Nov 2022 · Home› Technical Talk

   Converting by hand is a bit tedious since there are many steps. Does Toolbag offer a bake option to bake Diffuse, Normal, Spec from the PBR workflows?

4. Re: Convert PBR to Source Traditional Diffuse/Normal/Spec?

   

   Reply by FrankPolygon · Nov 2022 · Home› Technical Talk

   When exporting textures from Substance Painter there's an Output Template for the old Non-PBR Specular Glossiness workflow. It purportedly converts PBR base color metallic and outputs diffuse, normal and specular + glossiness textures. By default the spec gloss texture is packed with the specular values in the RGB channels…

5. Re: Convert PBR to Source Traditional Diffuse/Normal/Spec?

   

   Reply by armagon · Nov 2022 · Home› Technical Talk

   I could not find a way to do it with Painter, but this tool did the job: https://shadermap.com/docs/_pbr_conversion_templates.html I was able to convert from multiple PBR (SpecGloss, MetallicRough) to Diffuse/Specular without any issues.

6. Re: Convert PBR to Source Traditional Diffuse/Normal/Spec?

   

   Reply by armagon · Nov 2022 · Home› Technical Talk

   @FrankPolygon Would it be possible to "bake" a diffuse for older engines using Substance Painter? I don't own an license, but would definitely get one if it can help me move from modern maps to traditional more easily.

7. Re: Convert PBR to Source Traditional Diffuse/Normal/Spec?

   

   Reply by Eric Chadwick · Nov 2022 · Home› Technical Talk

   Nice find!

8. Re: Convert PBR to Source Traditional Diffuse/Normal/Spec?

   

   Reply by Eric Chadwick · Nov 2022 · Home› Technical Talk

   Not sure I've seen one that is backwards compatible. Should be fairly trivial to convert though. @EarthQuake has a great tutorial/walkthrough on this: https://marmoset.co/posts/pbr-texture-conversion/