Alexey Knyazev

@robertlong Thanks for the heads up! Are you planning to submit a PR with the OMI extensions to the main glTF repo?

> If there is an extension that uses the alpha channel of the texture for something else, then this isn't an issue. Do we think these will be warnings or...

How about: - Mode should be OPAQUE when `vertexColor.a * baseColorTexture.a * baseColorFactor.a` equals `1.0` for all vertices / texels. - Mode should be MASK or BLEND otherwise. Possible false...

I think yes. Here're action items: - [ ] Add an impl. note to the spec. - [ ] Add a validation hint when BLEND or MASK mode is used...

The weights sum is accumulated across all weights sets (4, 8, 12, etc). The error message may be better, though. Could you please provide an example asset?

Both models from that archive have `unorm8` skinning weights. The `CesiumMan.quantize-hi.glb` shows 320 relevant validation errors.

This is going to be addressed in the upcoming release.

The original issue has been fixed. In a case when all morph target deltas are positive, an exporter should be allowed to use smaller components. Since the validator cannot know...

These are all great questions. - On the spec or extensions level, extending enum sets should be done very carefully as it may lead to unintended side-effects. For example, a...

> An image (larger than 2x2) consists of a single solid color This would require performing full image decode. To put things into some perspective: - Decoding JPEG requires parsing...