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From https://github.com/KhronosGroup/glTF-Sample-Viewer/blob/main/source/Renderer/shaders/brdf.glsl
> // Roughness is authored as perceptual roughness; as is convention,
// convert to mate…
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When rendering a large model (~7K individual renderables) on a mid range devices (2 to 3 years old) the performance has been degraded to the point it becomes unusable.
**Affected devices:**
Samsun…
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Good morning,
When I test the viewer via Render.com, instead of previewing the gltf file online, it downloads the file to me when I drag and drop. How to configure the viewer on Render.com?
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All files can be tested in Cesium sand castle to see values:
https://github.com/CesiumGS/3d-tiles-samples/tree/main/glTF/EXT_structural_metadata
**Open Questions**
- Is it the case that all tex…
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The MeshTransmissionMaterial works exactly like the PhysicalMeshMaterial and all special feature didnt work i try in both threejs `v150` & `v158`, result is the same as you can see on these screenshot…
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When moving some distance away from the world origin, the physics simulation, especially friction against surfaces, gets a little off. You slide a lot more when further away from origin. the effect is…
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### Environment
This happens on the Official Viewer, Alchemy and Firestorm.
Firestorm 7.1.3 (72975) Feb 15 2024 18:43:30 (64bit / SSE2) (Firestorm-Betax64) with Havok support
You are at 228.7, …
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**To Reproduce**
Create an object
In the objects material tab, switch from the "Data" option to the "Object" option and create a new material with a different color
Now export and check the export…
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i want to develop a function, user can upload gltf file, after uploading, the app take a thumbnail by gltf file.