KHR_lights_area: Proposal

Could a rectangle type be added to the KHR_lights_punctual extension? Seeing as Unity, Unreal and Blender support rectangular area lights?

Unity: https://docs.unity3d.com/Manual/Lighting.html
Unreal: https://docs.unrealengine.com/en-US/BuildingWorlds/LightingAndShadows/LightTypes/RectLights/index.html
Blender: https://docs.blender.org/manual/en/latest/render/lights/light_object.html

If not, is there a workaround around this?

Review the KHR_lights_punctual extension proposal and the linked closed pull request #1948 first; the issue names no repository files or tests. Establish whether the requested rectangle light belongs in the extension or needs a documented workaround, with a resolved design decision or workaround defining done.

Written by the indexing model from the issue text.