Incorrect vertex color dequantization, context-dependent
timothyallan opened this issue · 3 comments
I have a clients model which goes through my gltf-transform v3.10.0 + node 18.19 optimizing process, which is basically the same as the R3F transform here https://github.com/pmndrs/gltfjsx/blob/master/src/utils/transform.js
As soon as reorder({ encoder: MeshoptEncoder }) is introduced (with either 'size' or 'performance' options), this happens:
Loading it into the online viewer, it appears fine, but shows 5 errors relating to a material clearcoatFactor from the blender export, but nothing super out of the ordinary.
I've run many dozens of different models through this pipeline and it's the first time this has happened. Any suggestions or ideas?
I can provide a private link to the model if required.
@timothyallan is it possible that there's alpha blending enabled on this material, where it should be opaque? That's my first guess, and reorder() could certainly cause unexpected issues in such a model. But if not, I may need to take a look at the model. My email address can be found on my GitHub profile or website (https://www.donmccurdy.com/).
Thanks @timothyallan! I've fixed the issue and published to v4.0.0-alpha.7. Installing from the @next tag will pull in the v4 alpha release:
npm install --save @gltf-transform/core@next @gltf-transform/extensions@next @gltf-transform/functions@nextJust tested it, and it works great now. Thanks for your assist on this @donmccurdy!