How to delete the loaded gltf and babylon files?

Questions
1

For example, if I use gltf loaded by BABYLON.AssetsManager, how can I delete it completely when I don’t need it? And the memory can be freed clean，
This is a memory snapshot I deleted several times and it keeps growing.
My delete method is like this:
*
public destory(task: BABYLON.MeshAssetTask) {
let meshes = task.loadedMeshes;
let skeletons = task.loadedSkeletons;
let animationGroups = task.loadedAnimationGroups;
let particleSystems = task.loadedParticleSystems;
// meshes
for (let i = 0; i < meshes.length; i++) {
if (meshes[i].material) {
if (meshes[i].material.getActiveTextures()) {
let ts = meshes[i].material.getActiveTextures();
for (let j = 0; j < ts.length; j++) {
ts[j].dispose();
}
}
if (meshes[i].material.getAlphaTestTexture()) {
let t = meshes[i].material.getAlphaTestTexture();
t.dispose();
}
meshes[i].material.dispose();
}
meshes[i].dispose();
}
// skeletons
for (let i = 0; i < skeletons.length; i++) {
skeletons[i].dispose();
}
// animationGroups
for (let i = 0; i < animationGroups.length; i++) {
animationGroups[i].dispose();
}
// particleSystems
for (let i = 0; i < particleSystems.length; i++) {
particleSystems[i].dispose();
}
}
*
But it can’t completely delete material,
QQ图片20191212113247

2

To get rid of a material you should just have to call material.dispose(). it must take care of everything for you

same for mesh.dispose()

Can you repro the leak in the playground?

3

Thank you for your reply, the playground is here : https://www.babylonjs-playground.com/#FP5Q72, click the “Add” button to create a resource and display it, click the “Sub” button to delete the resource, but through several rounds of creation and deletion, I found that the memory has been growing. I used Google Chrome’s memory heap snapshot to view the memory.

4

By the way, ask a few questions, 1. If I want to display two identical 3D models, do I need to load it twice? Because loading is too time consuming, is there a way to load two 3D models at once? 2. How to delete the 3D model correctly so that there is no memory leak? Looking forward to your answer.

5

Ok using the Inspector, you can see what is left:

image
image597×1143 42.5 KB

To dispose the textures when disposing the material, you can call material.dispose(true, true);

To dispose the skeletons you need to call mesh.skeleton.dispose() (they are not automatically disposed as they could be shared)

2 Likes
6
  1. No you don’t need to load twice: Use an AssetContainer - Babylon.js Documentation
  2. See my previous message
1 Like
7

Thank you for your help, I will try your method, sincere thanks.

1 Like