Webp asset spawns errors, occlusion is incorrect

[echadwick-artist]

1. https://github.khronos.org/glTF-Sample-Viewer-Release/
2. Model = GlassBrokenWindow

Result: no errors. This is as expected.

3. Unzip the attached asset, and drag-and-drop the GLB into the viewer.

Result: Two problems: a) Error message "Image is undefined for texture undefined", which appears on load, and every time model is moved. b) Occlusion debug view shows incorrect texture.

glTF Validator reports no problems for the GLB with webp textures.

GlassBrokenWindow_webp.zip

Thanks for looking into this! Eric

[jim-ec]

The sample viewer does not support decoding WebP images. While the spec only allows image/jpeg and image/png as image mime types, the schema does not enforce any specific mime type, which is maybe why the validator does not complain.

[echadwick-artist]

Ah, thanks.

It seems to me the sample viewer should support all ratified extensions.

This asset uses the last one on the list, EXT_texture_webp

[emackey]

The error message is better now, but WebP was ratified some time ago. It should be supported here.