mergeVertices colors mapping problem


I am using Geometry.mergeVertices method and I have realized that colors are not properly mapped after merging.

In my case I have a IndexedBufferGeometry which I convert into a geometry with:
geometry = new THREE.Geometry().fromBufferGeometry( geometry );

After doing this colors i Geometry are ok.

But after applying mergeVertice they don’t.

It seems that this method doesn’t take in mind colors.

Is there any fix for this?

Best regards

Any chances to demonstrate this issue with a live example? Right now, it’s hard to understand the expected and actual visual result.


Today I will try to push a live example.

It’s quite easy to demonstrate with a merged BufferGeometry composed of multiple bufferGeometries with different colors.

Best regards

mergeVertices in the BufferGeometryUtils example should (if I remember right) account for multiple vertex attributes in a geometry and correctly retain vertex colors:

I think in general it’s considered best to not use Geometry if you can avoid it.

1 Like


Very sorry for the delay.

I have been on vacations in a place with no internet connection. Really nice.

: )

I will try this option and will keep you informed,

Best regards