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Valid objects cause ArgumentException: Invalid vertex attribute dimension value (0, should be [1,4]) #162

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hybridherbst opened this issue Apr 6, 2021 · 1 comment
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Valid objects cause ArgumentException: Invalid vertex attribute dimension value (0, should be [1,4]) #162

hybridherbst opened this issue Apr 6, 2021 · 1 comment
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bug Something isn't working
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3.2.0

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@hybridherbst
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I'm getting an exception with a specific mesh:

ArgumentException: Invalid vertex attribute dimension value (0, should be [1,4])
UnityEngine.Mesh.SetVertexBufferParams (System.Int32 vertexCount, UnityEngine.Rendering.VertexAttributeDescriptor[] attributes) (at <42a5878ce129403083acccf18e43363f>:0)
GLTFast.VertexBufferConfig`1[VType].ApplyOnMesh (UnityEngine.Mesh msh, UnityEngine.Rendering.MeshUpdateFlags flags) (at D:/git/quest-app-launcher/development/com.atteneder.gltfast/Runtime/Scripts/VertexBufferConfig.cs:248)
GLTFast.PrimitiveCreateContext.CreatePrimitive () (at D:/git/quest-app-launcher/development/com.atteneder.gltfast/Runtime/Scripts/PrimitiveCreateContext.cs:55)
GLTFast.GLTFast+<Prepare>d__76.MoveNext () (at D:/git/quest-app-launcher/development/com.atteneder.gltfast/Runtime/Scripts/GltFast.cs:1055)

What I see when debugging the exception from GltFast - looks like duplicate "position" attribute?
210406-154326530-AppLauncher_–VertexBufferConfig cs Debugger

How it looks in Gestaltor:
image

I sent the mesh via the "usual channels" for debugging purposes.
@atteneder atteneder self-assigned this Apr 7, 2021
@atteneder atteneder added the bug Something isn't working label Apr 7, 2021
@atteneder atteneder added this to the 3.2.0 milestone Apr 7, 2021
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confirmed!

Bug is triggered if a mesh has two UV sets and vertex colors. This results in faulty vertex attribute descriptors.

atteneder added a commit to Unity-Technologies/com.unity.cloud.gltfast that referenced this issue Jun 28, 2024
@atteneder
fix(export): Base colors are now in correct, linear color space. (att…
7735dad 
…eneder#162)

* fix(export): Base colors are now in correct, linear color space.
* fix: Updated tests and reference values.
* fix(test): Increased error tolerance on color property values. Those usually undergo a gamma to linear conversion introducing some error.
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@atteneder @hybridherbst