KHR_lights_ies by tblutNV · Pull Request #2200 · KhronosGroup/glTF · GitHub
DRANK
This extension adds support for referencing and storing IES light profiles and using them as point lights. IES light profile files are used as-is, similar to how PNG and JPEG images are used. There...
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そのうちglTFで照明のIESプロファイルもサポートされるのかな
github.com/KhronosGroup/g…