KeyShot Forum

Archive => Support Archive => Topic started by: Esben Oxholm on January 11, 2017, 04:16:10 AM

Title: Naming issues in the mat. graph when using gloss instead of roughness
Post by: Esben Oxholm on January 11, 2017, 04:16:10 AM
A small 'bug' I guess, but can be a bit confusing.

It seems like that when using gloss instead of roughness the naming is not changed in the nodes in the material graph.
See attached.

Best,
Title: Re: Naming issues in the mat. graph when using gloss instead of roughness
Post by: soren on January 11, 2017, 06:13:19 AM
That is in fact intentional (although a bit arcane to be sure): You cannot apply a gloss map - the underlying parameter which can be textured is roughness. The gloss is provided as convenient UI overlay in a manner of speaking.

Søren
Title: Re: Naming issues in the mat. graph when using gloss instead of roughness
Post by: soren on January 11, 2017, 06:25:15 AM
So what you are trying to do will not work - use a color invert node on the texture as a crude/inaccurate gloss to roughness conversion.

Søren
Title: Re: Naming issues in the mat. graph when using gloss instead of roughness
Post by: soren on January 11, 2017, 06:39:05 AM
Since there is a bit confusion about this, I have uploaded a conversion example using the gradient node to the cloud called "Approximate Gloss To Roughness Gradient" also attached here. Use the gradient node between the texture and the roughness parameter. The gradient color stops are based on the conversion we use between gloss and roughness.

(You can drop the material from the library onto the material graph window to copy the material nodes for easy re-use)

Søren
Title: Re: Naming issues in the mat. graph when using gloss instead of roughness
Post by: Esben Oxholm on January 11, 2017, 10:31:44 PM
Hi Søren.
Thanks for the quick reply.

All right, that is good to know.
Thanks for the gradient node! I'll definitely be using that.