Description After adding the mesh of the gltf model to THREE.InstancedMesh, I modified the scaling, and the rendered effect seems to have lost some vertices Reproduction steps Adding custom layers using mapboxgl Load the model using three gltfloader in the mapboxgl custom layer Adding gltf mesh us…

Are you sure its just not rendering double sided faces in the material? Did you compare the points attributes lengths?

I’m not sure, I just found that when the model is enlarged, it looks normal, but when it is reduced, the rendering is incomplete

Your stem normals are facing in one direction, you need to make them double sided or edit the stem geometry to that it has volume and normals face outside. child.material.side = THREE.DoubleSide; i think

also how small is the the world scale? Reeeallly tiny could give you issues, like 0.00002 3d editors dont tend to like those. You can scale up the geomerty and then applyMatrix to the vertices and then scale again

This problem seems to be the same as mine, but I didn’t understand how he solved it [image] Strange model behavior when using InstancedMesh with CameraSync (threebox) Questions I have a mapbox and CameraSync ( threebox/CameraSync.js at 6e6a1ae3878c8557c20eb56ada53af843222f…

[image] xiaxiangfeng: e solved it It seems that it hasn’t been resolved yet

It seems that it hasn’t been resolved yet

I would not go around with messing shaders for now, try fixing things that are easier and more apparent at first. Inrease your base mesh level of detail, subdivide it by code. Or better yet subdivide it in a 3D program and re export it. Maybe adjust the cameras near frustrum. Try not to make too m…

Oh my god, this problem has been bothering me for two weeks. What should I do

Adding a model using THREE InstancedMesh in mapboxgl, losing vertices after modifying and scaling

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xiaxiangfeng November 20, 2023, 3:25am 6

This problem seems to be the same as mine, but I didn’t understand how he solved it

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Adding a model using THREE InstancedMesh in mapboxgl, losing vertices after modifying and scaling

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