Subviewport texture applied on 3D mesh is not transparent while it should be | Godot Engine | Page 1

iron plaza Jun 18, 2025, 9:13 PM

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Hi, I'm trying to dynamically create 3D pages with text on it. I have a base texture for my 3D page mesh and a scene with a label as a child of a subviewport.
I'm correctly waiting for the next render frame before getting the texture etc. And it basically works BUT it produce a black background while it should be transparent since there is nothing aside the label (see image).
I've tried playing with the Subviewport options with no success.
I'm putting the texture in material_overlay fyi.

If you have any idea, I'll gladly try it out.

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Btw I don't understand how the overall canvas sizing works for this process, can't get the right size I need to use for my label

tepid cosmos Jun 19, 2025, 8:49 PM

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iron plaza Hi, I'm trying to dynamically create 3D pages with text on it. I have a base tex...

Gotta set transparency to alpha in the material settings

iron plaza Jun 19, 2025, 9:05 PM

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tepid cosmos Gotta set transparency to alpha in the material settings

Wow, absolutely didn't though about that

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It works tysm

tepid cosmos Jun 19, 2025, 9:11 PM

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And obligatory best UI tutorial if you're still stuck on layout:
https://youtu.be/1_OFJLyqlXI?feature=shared

#Subviewport texture applied on 3D mesh is not transparent while it should be