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Material Freeze and Instances

The Snow Irbix

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Hellooo !

I was trying to improve my little voxel engine with the tuto here : https://doc.babylonjs.com/tutorials/optimizing_your_scene


Babylon.js uses an advanced and automatic shaders engine. This system will keep shaders up to date regarding material options. If you are using a static material (ie. an immutable material) then you can let it know to Babylon.js by using the following code:



But I came with a bug that causes my boxes to disappear when I freeze the material and move the camera.

I recreated it in the PG : https://playground.babylonjs.com/#NXU14G

If you move the camera so the center of the cube is not in the frustum culling anymore, all instances seem to disappear :o


Note that this bug only occurs when working with instances, if you replace

let instance = box.createInstance(''+x+y+z);


let instance = box.clone(''+x+y+z);

it works well.


Can someone help me or explain me why I can't freeze the material when working with instances ?

Thank you very much !

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