Hey guys, I'm doing some planning on a shader and I cannot decide upon if I should have a separate Gloss/Roughness for the specularity and reflections or if they should use the same value/texture? Same issue if I want to modulate the specularity and reflections with a fresnel term, do I want the same amount of frensel…
Most engines let you tweak these independently. That being said, I prefer to keep them tied together and tweaked/modified so they work as expected. As you said, they influence the same phenomena and when they are separate it's just way easier for a novice to get them out of sync and not understand why things "don't look…