genvvk

Nope! But I did a simple alpha reindex by a distance to scene camera. This function solved the problem partly because objects still could visually 'intersect' themselves [c) and d) illustrations]

And I don't know how to fix it. 

Hi there, 

I have one single OBJ file with several objects within. Each element has its unique name.

Is it possible to load each object as a single mesh?

Tried to do this:

var parts = [];

obj.onSuccess = function (task) {  

       for(var i = 0; i < task.loadedMeshes.length; i++){

             parts.push(task.loadedMeshes[i]);
             parts[parts - 1].material = uniqueMat;

             ...

       }

}

But it seems that each next mesh / geometry has all previous ones like an avalanche. 

Loading OBJ with 5 similar spheres as a test

Geometry {delayLoadState: 0, _totalVertices: 266, _isDisposed: false, id: "c0d23769-a422-47c5-8060-fabd67a55b1a", _engine: Engine…}
main.js:254 Geometry {delayLoadState: 0, _totalVertices: 532, _isDisposed: false, id: "e83a4890-a107-425d-969c-eea1f356e200", _engine: Engine…}
main.js:254 Geometry {delayLoadState: 0, _totalVertices: 798, _isDisposed: false, id: "19b85286-2066-4ef7-9e95-bba19d906e71", _engine: Engine…}
main.js:254 Geometry {delayLoadState: 0, _totalVertices: 1064, _isDisposed: false, id: "22bc102d-1acc-4fa8-9576-77a9915e666f", _engine: Engine…}
main.js:254 Geometry {delayLoadState: 0, _totalVertices: 1330, _isDisposed: false, id: "3eb8eab7-1871-4fed-b484-c18fc881cb23", _engine: Engine…}
main.js:234 0

4 hours ago, genvvk said:

By the way, I'm using v3.1-alpha version, maybe it's a good idea to try the latest stable version.

2.5 has the same issue with standard materials

I need semi-transparent material for frame and temples. Different ones.

By the way, these artefacts could be caused by miss-loading OBJ.

Hi there,

Is there any kind of renderer.sortObjects() or renderer.depthTest() like other frameworks have?

I have several transparent objects (alpha < 1.0) on the scene and sometimes renderer behaves glitchy (please see attachment). Theoretically, could write a function for sorting meshes by a distance to camera and set .alphaIndex, but it doesn't solve the problem with self-intersection like frame does c) & b).

Babylon.JS 3.01, materials are PBRMaterial() with .disableDepthWrite = false and .alphaMode = 2.

Any ideas? Thanks in advance!