Render textures attached to a RawImage component are not set/updated on VisionOS

Unity Engine
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1

Found this simple bug which is preventing us from using RawImage components in UGUI and rendering to them via a RTT. Submitted with simple sample project @ IN-66234
Jan-18-2024 16-38-04

2

Hi @joe_nk–

Thanks for filing the incidence report. At least based on your *.gif, it appears that this may be a general issue in Unity rather than anything specific to visionOS or MR Mode /PolySpatial. Can you confirm that?

Thanks!
–Tim

3

Hi!

I’ve just tried Unity 2022.3.13 and that exhibits the same issue. Furthermore, disabling the PolySpatial runtime fixes the problem in the Editor Game view (The sphere is drawn)

Thanks

4

Yes, it looks like this is an issue with how we track textures for Image/RawImage components (we assumed they would be Texture2D instances). We’ll get that fixed in a future release, though the usual caveats about RenderTextures will still apply. I don’t know of any workaround for the moment other than using a MeshRenderer (with Quad geometry) rather than a UI component (like RawImage).

5

Thanks, We’ve gone with a quad for now on visionOS, but worth noting that this only works if we use an opaque shader, otherwise we can’t control sorting in the UI.

6

Right, that makes sense. The next release should allow the PolySpatial Sorting Group to override UI/sprite/particle sorting to deal with issues like that.

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7

Looks like RawImage RTTs are fixed in 1.0.3, thanks!

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