Is the Diffuse reflection of OmniSurfaceBase using the Oren Nyar model?

Is the Diffuse reflection of OmniSurfaceBase using the Oren Nyar model?

@zzz_zhang666 based on the doc, it seems like the diffuse roughness is - Omniverse Materials — materials-and-rendering latest documentation

@Simplychenable My question is here. The meaning of ‘Diffuse Roughness’ is that when the roughness is 0.0, it is a Lambertian model, while when the roughness is not 0.0, it is an Oren Nyar. Can I understand it this way?

that’s my understanding, yes. and the cap would be at 1.0. so not an on/off situation but you are allowed to dial the coefficient. per wiki:

@Simplychenable Thank you. Your response is always great

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