How to preload mesh/materials so that there isn't stutter when a model enters the camera view?

[bghgary]

That’s odd. I did something similar and didn’t see any shaders being compiled. This is a probably a bug if you have compileMaterials already set on the glTF loader.

[kvbh]

I had several use cases where I would adjust material properties after loading the GLTFs which would trigger a shader recompilation, which I wanted to perform in advance. And I could do the same thing for creating meshes dynamically, for example via BABYLON.MeshBuilder.CreatePlane.

[bghgary]

Ahh, if you modify the material after load, then that’s different. You may consider calling material.forceCompilationAsync instead of Mesh.isReady.

[kvbh]

Cross-linking another thread with some other info on this topic, in case anyone else stumbles onto this:

Frame Drops on loaded GLB

Here is an example of tracking shader compilation calls; I just monkey patched the compilation function. What I did involved trying to ensure all compilation calls occur during a preload step. I triggered compilation by running something along the lines of mesh.isReady(true, false). I had to make sure the correct material properties were assigned prior to running this, in order to ensure that the correct shader variant was compiled. You can also log the full shader source and inspect that to…