Unable to apply my custom material to the mesh drawn inside GetDynamicMeshElements after editing FPrimitiveSceneProxy.

Development Rendering
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Situation: I customized CreateSceneProxy in MYMeshComponent (which inherits from UMeshComponent) to render a mesh from C++. In the proxy class that inherits from FPrimitiveSceneProxy and overrides GetDynamicMeshElements, I use FDynamicMeshBuilder’s GetMesh to draw. I load the material at /Script/Engine.Material’/MyPlugin/Materials/MyMat.MyMat’ using StaticLoadObject and pass that material proxy into GetMesh.

Issue: My custom material MyMat does not show up in the editor. The default MD_Surface material draws correctly with the same code. I confirmed in CreateSceneProxy that the material proxy is loaded and assigned without error.

Checks performed:

– Verified the material’s blend mode is set to opaque rather than translucent

– Confirmed in GetViewRelevance that main-pass and translucency flags are correct

– Added a log just before GetMesh to make sure the material proxy is actually passed in

Figures: Figure 1 shows the attempted MyMat result (nothing visible). Figure 2 shows MD_Surface working as expected. The blue lines in the screenshots are unrelated.

Is there any special step I’m missing to get a custom material to render from within a scene proxy? Any guidance would be greatly appreciated.

2

Hello,

Thank you for reaching out.

I’ve been assigned this issue, and we will be looking into the missing Material for you.

Can you please send us a minimal test project that demonstrates this, and include screenshots or video of the issue?

The guide for test projects:

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3

Hello,

Thank you for your reply.

After looking into it, I was able to resolve the issue by calling AddUnique with my custom material in GetUsedMaterials().

If I run into any other problems I can’t solve, I’d appreciate your help again. Thanks in advance!

4

Hello,

Thank you for sharing your solution.

Can we now close your case? You can always re-open it if you find you need further assistance with the same issue.

5

Hello,

Of course. Please close this case! Thank you for your help.