DiffuseTransmissionTest
January 30, 2026 · View on GitHub
Tags
Extensions
Required
- KHR_materials_unlit
- KHR_lights_punctual
Used
- KHR_materials_diffuse_transmission
- KHR_materials_unlit
- KHR_lights_punctual
Summary
Test model for KHR_materials_diffuse_transmission extension.
Operations
- Display in SampleViewer
- Download GLB
- Model Directory
Screenshot

Screenshot from the glTF Sample Viewer with the environment Cannon Exterior.
Description
This model tests diffuse transmission inputs for KHR_materials_diffuse_transmission.
There is a single directional punctual light, facing the camera.
The smaller rectangles on the left side use Unlit materials to indicate color and texture inputs.
Behind each of the larger rectangles are dark pink rectangles, to emulate the layout as seen in the extension readme here. However these may only affect the diffuse transmission in renderers using pathtracing.

Path-traced render from Dassault Systèmes Stellar Physically Correct, using the PBR Neutral tonemapper.
Legal
© 2025, Darmstadt Graphics Group GmbH. CC BY 4.0 International
- Eric Chadwick for Model and textures
© 2015, Khronos Group. Khronos Trademark or Logo
- Non-copyrightable logo for Khronos logo
© 2017, Khronos Group. Khronos Trademark or Logo
- Non-copyrightable logo for glTF logo