Expose specularPower to roughness conversion #16137
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…e same calculations when doing Area Lights in a Standard material scene
…e same calculations when doing Area Lights in a Standard material scene
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WebGL2 visualization test reporter: |
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Visualization tests for WebGPU |
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Visualization tests for WebGPU |
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WebGL2 visualization test reporter: |
When using RectAreaLight with StandardMaterial, the value used to calculate specular will come from "roughness". However, all other lights calculate specular based on "specularPower". If a user has a scene with multiple lights sources (RectAreaLight + PointLight for example), and uses StandardMaterial for its meshes, it needs to set the roughness to the bast value possible so that the specular behaves similarly for all lights.
We already perform a specularPower to roughness conversion when exporting StandardMaterial to GLTF. This PR makes that logic available so users can also consume it using the new "MaterialConversionHelper" class.