KHR_materials_clearcoat_ior #2530
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MiiBond
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Sep 25, 2025
| "default": 1.5, | ||
| "oneOf": [ | ||
| { | ||
| "minimum": 0.0, |
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This is how the base layer IOR extension is defined but, to be honest, I don't quite understand this. What's with the minimum: 0 and maximum 0?
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The base IOR extension allows (ior == 0.0) || (ior >= 1.0). The zero is a special case to support legacy content, see the extension spec for details.
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This adds an IOR uniform to the coat layer.