solved Material Freeze and Instances

[The Snow Irbix]

Hellooo !

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

Quote

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:

material.freeze();

 

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

 

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

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

by

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 !

[GameMonetize]

Unfortunately this is a known limitation.

But with the recent updates we did on the material, you should not see a big improvements but using freeze(). 

[The Snow Irbix]

Thank you for your reply ! Indeed there is not much performance difference, so I will do without.