MeshPhysicalMaterial: Add dispersion
.
#28051
Merged
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Fixed #28001.
Description
This PR adds dispersion support to
MeshPhysicalMaterial
based on KHR_materials_dispersion.It enhances
GLTFLoader
, the editor and adds a new examplewebgl_loader_gltf_dispersion
. I have temporarily updated the build files so it can be tested here:https://rawcdn.githack.com/Mugen87/three.js/55c6ae017d7953a4040d8fdbe00fbb7f9cd31c49/examples/webgl_loader_gltf_dispersion.html
For comparison this is the same model with the Khronos glTF Sample Viewer: https://github.khronos.org/glTF-Sample-Viewer-Release/?model=https://github.com/raw/KhronosGroup/glTF-Sample-Assets/main/./Models/DispersionTest/glTF-Binary/DispersionTest.glb
The idea is to use the dispersion value to compute three separate IOR values for the red, green, and blue channel. The transmission computation is then evaluated per color channel with the respective IOR. The implementation is based on the glTF sample viewer GLSL.
I'll update the docs when the implementation is approved.