How to dispose a pbr material and keep the effect cache?

Questions
1

I just update from v6 to v8 and I notice my effect is disposed by the pr.

Now even if I set forceDisposeEffect to false when disposing the pbr material, the effect will always be disposed because [mesh’s material change] → [mesh call resetDrawCache] →[effect disposed by drawCache’s dispose]. So the param forceDisposeEffect is not in use actually.

notBoundToMesh seems to work but it is not used in pbrMaterial nor standardMaterial.

As a description, I dispose the material and create it again just as a quick way to dispose the textures.

Playground: Babylon.js Playground , you’ll see a obvious flicker when changing the material in v8 because of the rebuild of the effect, and it works fine in v6.

2

You can use BABYLON.Effect.PersistentMode = true; to avoid disposing an effect when the effect is disposed (and refcount is 0):

https://playground.babylonjs.com/#PZIMMM

1 Like
3

Thanks this do work! But then forceDisposeEffect lost its use, maybe we should mark it as deprecated?

4

No, it is used internally to force the removal of all effects when engine.releaseEffects() is called. Also, there may be other uses…

5

Thanks for the explaination, I went through the code and found it is deprecated already as it is not used in material.dispose().