PBR Workflow Conversion Nodes

PBR Workflow Conversion Nodes

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PBR Workflow Conversion








MARI Extension Pack 3 R2 contains nodes to convert map types from one common PBR shader workflow

to another.


You are able to convert Channels from a Metal/Roughness Workflow to a Reflectance/Roughness or Specular/Glossiness workflow.


PBR MetalRough to ReflectanceRoughness


This Node will convert Inputs to Outputs:


Inputs                                Outputs


Base Color                        Diffuse

Height                                Displacement

Normal                                Normal

Roughness                        SpecReflectance

Metalness                        SpecRoughness

F0Specular                        SpecColor


Options



Node Connections


Input Maps and Channels in the MetalRough Workflow



Output Channels in the Reflectance-Roughness Workflow into different channels or layers.


Node Properties


If the Input 'Metal' is 1 (metallic surface), the correct diffuse color in a 'Reflectance-Roughness' Workflow

would be black. By increasing the 'Metal Diffuse Weight' more diffuse color will be added into the

'Diffuse' Output.


If the Input 'Metal' is 1 (metallic surface), the correct spec color in a 'Reflectance-Roughness' Workflow

would be 100% the 'Base Color' from a MetalRough workflow while the correct diffuse color would be black.

By decreasing the 'Metal SpecColor Weight' the SpecColor will become whiter.


If the Input 'Metal' is 1 (metallic surface), the correct Reflectance value in a 'Reflectance-Roughness' Workflow

would be the value of the 'Base Color' from a MetalRough workflow.

By decreasing the 'Metal SpecRefl Weight' you are lowering the output reflectance value.


By default the Node outputs specularRoughness - rougher surfaces are represented by higher values.

By turning on the 'Roughness to Glossiness' checkbox this behavior is inverted. Shinier surfaces are

represented by higher values, rougher surfaces by lower values.



PBR MetalRough to SpecGlossiness


This Node will convert Inputs to Outputs:


Inputs                                Outputs


Base Color                        Diffuse

Height                                Height

Normal                                Normal

Roughness                        Specular

Metalness                        Glossiness

F0Specular                        


Options



Node Connections


Input Maps and Channels in the MetalRough Workflow



Output Channels in the Specular-Glossiness Workflow into different channels or layers.


Node Properties


(there are no Node Properties for the node)

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