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mgsx-dev avatar mgsx-dev commented on September 21, 2024

Hi, could you please link your GLTF files (in a zip) and tell me how many lights do you have?

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RoberMS avatar RoberMS commented on September 21, 2024

I attached the glTF file. the error is shown in mid / low range mobiles, for example in lg v30 works perfect.
glTF.zip

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mgsx-dev avatar mgsx-dev commented on September 21, 2024

108 bones for a single model is way too high for video games. Typically (because of GPU limitations) you don't go over 30 bones for mobile and 60 bones for desktop.

Maybe you could optimize your model by removing some bones or simplify armature. Alternatively, you could split it in several armatures (which would be more complicated to handle in game).

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mgsx-dev avatar mgsx-dev commented on September 21, 2024

as you can see here desktop limit is typically 1024 uniforms and 256 for mobile (lowend device i guess).
Since a bone (mat4) takes 4 uniforms, you have a hard limit on desktop : 256 bones, and on mobile : 64 bones.
Note that few other uniforms are needed for the shaders so i wouldn't go over 50 bones. It depends on how many lights you have as well.

I'll had these limitation in documentation, thanks for reporting.

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