Model flickering in HoloLens

[camroo29]

Hi,

I tried to use DracoUnity with MRTK 3. After loading the model, any movement of the HoloLens (especially when you go close to the model) results in the Model flickering. When the HoloLens is close to the model it is mostly vanished. But when I recorded it, I could see the model was visible in the environment.

I am using: Unity 2021.3.4 MRTK 3

I could not figure out what is really causing such an issue. Any idea?

[camroo29]

Recalculating the bounds has solved this issue

[atteneder]

Two questions remain:

1. How to fix this for all users?
2. What performance impact does your solution have?

How exactly did you recalculate the bounds? If you've used Mesh.RecalculateBounds, it might be more efficient to calculate the bounds during decoding.

Are you loading the mesh from .drc files or in context of glTF?

Thanks.

[camroo29]

I am using .drc files for runtime loading. This is what I did:

        var mesh = new Mesh();
        Mesh.ApplyAndDisposeWritableMeshData(meshDataArray, mesh);

        if (result.calculateNormals)
        {
            mesh.RecalculateNormals();
        }
        if (requireTangents)
        {
            mesh.RecalculateTangents();
        }

        mesh.RecalculateBounds();

        return mesh;

I did not see any impact on the performance.