Broken materials when importing FBX

yaustar · January 3, 2023, 4:02pm

Definitely looks like a bug. Please follow this ticket for updates

FBX Import can create invalid materials

opened 04:01PM - 03 Jan 23 UTC

bug area: asset import

Thread: https://forum.playcanvas.com/t/broken-materials-when-importing-fbx/29065… Test FBX [Test_3dsMax.fbx.zip](https://github.com/playcanvas/editor/files/10337889/Test_3dsMax.fbx.zip) Create a new project Add a cubemap to the scene Import the FBX Add the model to the scene On the created material, try changing the glossiness value and see that no effect takes place in the Editor view Example scene: https://playcanvas.com/project/1024481/overview/imported-fbx-material-bug https://user-images.githubusercontent.com/16639049/210392781-229a3f4b-7606-4abb-a136-76b4c0926a3a.mp4 It looks like it's behaving like a Phong material. When downloading the material JSON, I also noticed that it uses 3 properties that aren't present in an Editor created material: ``` "shadingModel": 0, "twoSidedLighting": false, "bumpiness": 1, ``` If I use the Editor API and remove those properties, the material behaves as expected (like a Physical Material created in the Editor). However, if I don't remove all of them and try to update the material data via the API, get an error like: <img width="422" alt="image" src="https://user-images.githubusercontent.com/16639049/210393463-ae5164c7-b8de-468f-884c-b8ec7d9acc77.png"> `"shadingModel": 0` is also interesting as it is a property used in the engine and 0 is `SPECULAR_PHONG`