standard_surface_blackbody.mtlx

<?xml version="1.0"?>
<materialx version="1.38" colorspace="lin_rec709">
  <nodegraph name="NG_blackbody">
      <input name="blackbody_temperature" type="float" value="5000.0" uimin="1500.0" uimax="25000.0" uistep="100.0" uiname="Blackbody Temperature Kelvin" />
      <blackbody name="blackbody_color_out" type="color3">
          <input name="temperature" type="float" interfacename="blackbody_temperature" uivisible="true"/>
      </blackbody>
      <output name="emission_color_output" type="color3" nodename="blackbody_color_out" />
  </nodegraph>
  <standard_surface name="SR_blackbody" type="surfaceshader">
      <input name="base" type="float" value="0.0" />
      <input name="base_color" type="color3" value="1.0, 1.0, 1.0" />
      <input name="specular" type="float" value="0.0" />
      <input name="specular_color" type="color3" value="1.0, 1.0, 1.0" />
      <input name="specular_roughness" type="float" value="0" />
      <input name="metalness" type="float" value="1" />
      <input name="emission" type="float" value="1" />
      <input name="emission_color" type="color3" nodegraph="NG_blackbody" output="emission_color_output" />
  </standard_surface>
  <surfacematerial name="Blackbody" type="material">
      <input name="surfaceshader" type="surfaceshader" nodename="SR_blackbody" />
  </surfacematerial>
</materialx>