8 answers ·
asked March 22, 2018 8:46pm
· Lesson: Using Substance Textures in Cycles · Course: The Blender & Substance Texturing Workflow
I use 2.79 Principled Shader, Do I still need to increase the SP roughness map to Power of 2 before inputting to the PS?
Yep, it'll be that way until 2.8 comes out.
thanks..... I noticed in Youtube some people using it with the PS but did not seem to make sense to me.
jlampel I don't think, that it's needed for principled shader
Here is Cycles render without a power of 2:
And here is Iray in Substance Painter. Seems pretty consistent
While Cycles with the power of 2 looks far less rough than it should be
Ah you are so right, thanks for the catch! I must have been thinking 2.78. In 2.8 all roughness will behave that way BTW, not just the principled shader.
In the Principled shader, Non-Color Data with a Power of 2 actually looks identical to Color Data with no Power of 2. So for Principled shader, we can just plug in the roughness map as Non-Color data without anything else? (This seems to be how the Poliigon Material Converter add-on does this.)
That's how I do it!