How to use transparency correctly maya2gltf about maya2gltf HOT 16 CLOSED

I see. I was wondering why there was no response and I didn't want push.

I have figured out some of the transparency issues. I made some car lights work but I don't know how to have a label on a glass container work.
In your old versions of the plugin when I put alpha to 0 and the color to black the export shows a transparent object with full reflection on it gltf viewer etc.... Now in your new plugin when I apply the same settings the object is completely gone.

Here is my file.

Thank you.
Breville_Glass.zip

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Could you try exporting one of the transparent scenes in this repository, and see if that works for you?

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Apologies I am not familiar with what you are asking. I am not a coder. I just use your plugin/addon to export to glTF/glb. I can up load my files if that helps?

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Apologies for that. I accidentally clicked closed. I can't attach the gltf file.

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Sorry, I forgot about this issue.

What happens if you load and expert the transparent scenes from this folder?

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Hi Ziriax
I have tried what you have requested and it looks like the transparent files work. See attached.
So what am I doing incorrectly?
The logo on the glass needs to be white. But from your examples. White is the alpha. See attached for my example.

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I had a closer look at the PNG file with the blue circle. I think I know what what to do but I would like to hear your info of it thanks.

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Hard to tell just looking at the output.

Can you share your Maya scene with me?

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Yes I can. I will clean it up for you as it has plenty other things.

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I am not sure how to share it with you but here is a wetransfer links.

https://we.tl/t-oG6fDJqXhw

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Sorry, I missed this issue, I was on vacation in august.

The link is expired, can you upload this again, if still needed?

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You can try to abuse the emissive texture I guess, so that the color of the text is added to the transparent bottle. So the texture containing the label should become an emissive texture. I am not sure if this will work, but I don't think anything is wrong with the exporter in this regard, the output looks correct at first sight.

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No that doesn't seem to work... I'm afraid that your mesh can't work without OIT (order independent transparency). This has nothing to do with Maya2glTF, but the render engine.

Best to ask in the general GLTF rendering forums or rendering engine specific forums for how to this with GLTF and the engine.

PS: I couldn't get it any better than this, using the Babylon viewer:

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Thank you for your help!!! Hmmm I need to see how the ""OIT"" works in our AR application... I am having problems getting the "glass" effect to work now. I am now working on a car model and trying to create glass effect for the windows etc from in Maya and it just doesn't work anymore. I am now working in Substance painter to export the GLB but it's still not 100%.... Would the dev behind the overall compiling of the AR project be able to apply a more robust glass information by using coding stating the IOR for the material? I am guessing they could.

Thanks for all you help. I might have maybe look into using Blender for transparency. Maybe it deals with it differently on export.

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See also

https://doc.babylonjs.com/features/featuresDeepDive/materials/advanced/transparent_rendering

https://doc.babylonjs.com/features/featuresDeepDive/materials/advanced/transparent_rendering#order-independent-transparency

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My apologies for such a late reply. Thank you. I will have a look at the links provide. I really appreciate your help.

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