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Update UsdPreviewSurface Nodegraph #2081

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merged 1 commit into from
Oct 21, 2024
Merged

Update UsdPreviewSurface Nodegraph #2081

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22 changes: 18 additions & 4 deletions libraries/bxdf/usd_preview_surface.mtlx
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@
<!-- ======================================================================== -->

<!-- Node: UsdPreviewSurface -->
<nodedef name="ND_UsdPreviewSurface_surfaceshader" node="UsdPreviewSurface" nodegroup="pbr" doc="USD preview surface shader" version="2.3" isdefaultversion="true">
<nodedef name="ND_UsdPreviewSurface_surfaceshader" node="UsdPreviewSurface" nodegroup="pbr" doc="USD preview surface shader" version="2.6" isdefaultversion="true">
<input name="diffuseColor" type="color3" value="0.18, 0.18, 0.18" uimin="0,0,0" uimax="1,1,1" />
<input name="emissiveColor" type="color3" value="0, 0, 0" uimin="0,0,0" uisoftmax="1,1,1" />
<input name="useSpecularWorkflow" type="integer" value="0" uimin="0" uimax="1" uistep="1" />
Expand Down Expand Up @@ -152,10 +152,16 @@
<input name="normal" type="vector3" nodename="surface_normal" />
<input name="scatter_mode" type="string" value="T" />
</dielectric_bsdf>
<ifgreater name="transmission_mix_amount" type="float">
<input name="value1" type="float" interfacename="opacityThreshold" />
<input name="value2" type="float" value="0" />
<input name="in1" type="float" value="1" />
<input name="in2" type="float" interfacename="opacity" />
</ifgreater>
<mix name="transmission_mix" type="BSDF">
<input name="fg" type="BSDF" nodename="diffuse_bsdf" />
<input name="bg" type="BSDF" nodename="transmission_bsdf" />
<input name="mix" type="float" interfacename="opacity" />
<input name="mix" type="float" nodename="transmission_mix_amount" />
</mix>

<!-- Specular Workflow -->
Expand All @@ -170,8 +176,12 @@
<input name="roughness" type="vector2" nodename="specular_roughness" />
<input name="normal" type="vector3" nodename="surface_normal" />
</generalized_schlick_bsdf>
<mix name="specular_bsdf1_mix" type="BSDF">
<input name="bg" type="BSDF" nodename="specular_bsdf1" />
<input name="mix" type="float" nodename="transmission_mix_amount" />
</mix>
<layer name="specular_workflow_bsdf" type="BSDF">
<input name="top" type="BSDF" nodename="specular_bsdf1" />
<input name="top" type="BSDF" nodename="specular_bsdf1_mix" />
<input name="base" type="BSDF" nodename="transmission_mix" />
</layer>

Expand Down Expand Up @@ -213,8 +223,12 @@
<input name="roughness" type="vector2" nodename="specular_roughness" />
<input name="normal" type="vector3" nodename="surface_normal" />
</generalized_schlick_bsdf>
<mix name="specular_bsdf2_mix" type="BSDF">
<input name="bg" type="BSDF" nodename="specular_bsdf2" />
<input name="mix" type="float" nodename="transmission_mix_amount" />
</mix>
<layer name="metalness_specular_bsdf" type="BSDF">
<input name="top" type="BSDF" nodename="specular_bsdf2" />
<input name="top" type="BSDF" nodename="specular_bsdf2_mix" />
<input name="base" type="BSDF" nodename="transmission_mix" />
</layer>
<artistic_ior name="artistic_ior" type="multioutput">
Expand Down