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  • Repacked Skin with RenderExistingMesh cause weird result.

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Hi,

Apology for my bad grammar.I am not native English speaker.

I make a character with customize equipment (mix&match). Everything work fine.

And when i combine with outline shader. Using RenderExistingMesh.cs cause the outline mesh to not align correctly with the base mesh.(it magically flipped)

This is the code i use after customize skin.

private void RepackSkin()
{
    var repackedSkin = new Skin("repacked skin");
    repackedSkin.AddAttachments(skeleton.Data.FindSkin("01_basicSkin"));
    repackedSkin.AddAttachments(customSkin);

if (runtimeMaterial != null)
    Destroy(runtimeMaterial);
if (runtimeAtlas != null)
    Destroy(runtimeAtlas);

repackedSkin = repackedSkin.GetRepackedSkin(repackedSkin.Name, sourceMaterial, out runtimeMaterial, out runtimeAtlas);
skeleton.SetSkin(repackedSkin);

var outlineMaterial = renderExistingMesh.replacementMaterials[0].replacementMaterial;
outlineMaterial.mainTexture = runtimeAtlas;
outlineMaterial.SetInt("_OutlineReferenceTexWidth", runtimeAtlas.width);
outlineMaterial.SetFloat("_OutlineWidth", runtimeAtlas.width / 256f);
}

Default outline.

After call RepackSkin.

Repack with custom skin.

I forgot to point out that i need help. I have no idea what I am doing is wrong.
If you need more clarity please ask for. I will try my best to explain.

No need to apologize.

Could you please send us a minimal Unity project that still shows this issue, as a zip package to contact@esotericsoftware.com? Then we can have a look at it what exactly goes wrong.

Thank for your response, and sorry for my late reply.

I have sent you a minimal project (as possible as I can) to the email.

Thank you very much to give me a hand on this.

Thanks for sending the reproduction package. We will have a look at it and get back to you as soon as we've figured out what is going wrong.

It seems as if the outline Material asset Player Character_Outline_Material (the green one) causes some weird behaviour. I noticed that the second outline Material Player Character_Outline_Material 1 (the blue one) does not show the problems. Strangely after copying Player Character_Outline_Material 1 to Player Character_Outline_Material 2 and copying the Material properties via Inspector Gear Icon - Copy Material Properties and Paste Material Properties to the new outline material, everything worked as expected. This could have been due to any kind of asset corruption or a similar effect.

So in short, please remove the problematic green outline material and re-create it.

Thank for the inspection. I did it as you said and it really fixed.

That indeed really wired behavior. It not even relate to a Spine.

Thank again for the help and sorry to trouble you with this unrelated topic.

Glad we could resolve it easily. Sometimes asset management systems produce strange mysteries.

7 months later

Hi, I got the follow up problem not relate to the outline one but it close enough. And I don't want to create a new topic for it.

With my runtime repack skin code above. It's broken on standalone build. Both with Mono and IL2CPP backend script.

I don't know what wrong with my code or my exported character. I have extracted minimal project ready in case you need it.

Test with
Spine version 3.8-2021-02-22
Unity version 2019.4.19f1

Here an executable in case anyone curious

That's it. Thank for the quick reminder and sorry for my neglect such a simple fact.

I did change a lot of project structure and never re-check the import setting of each files. Because it work fine on editor that I never notice until now.

Glad to hear you've figured it out, thanks for letting us know.