Color corrections and blend modes don't work with projected roughness?
Am I missing something, or do neither blend modes or levels work on a layer that has only roughness applied via a texture?
I have some white lettering that's being 3D projected, via a PNG with transparency.
If I duplicate this layer and plug it into a roughness only fill layer, I get the expected white values in the roughness channel.
However, if I want this value to be black, I should be able to color correct only this layer somehow, such as by applying a levels effect with "invert" checked (to get a black roughness value). Or, setting the blend mode on the roughness channel on the layer to "subtract" should have a similar effect.
Neither seems to work and my roughness values on the lettering stay white. It's as if the roughness channel is continuing to read values directly from the texture and ignoring any downstream processes.
???
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