Batching Group not rendered

Help & Support
1

Hello everyone,

In our project, we are currently working on optimizations using Batch groups. So I add meshes instances using the same material in a same group.
But when we are launching the project, only one mesh of the group is displayed (rendered ?) (and this is everytime the last mesh I added to the group which is visible).

The things very important I think is that we got a main menu with which allow the player to select a scene.
When we are choosing a scene, a script will find all the models of the scene with a specific tag (for example “Scene1”), and load all these models.
The code bellow show you how we load a choosen scene :

this.start.enabled = false;
    
    const oldHierarchy = this.app.root.findByName('Root');
    const scene = this.app.scenes.find("Scene" + Utils.selectedMission);
    
    const self = this;

    // Load both the hierarchy and scene settings
    self.app.scenes.loadSceneHierarchy(scene.url, function (err, parent) {
        if (!err) {
            self.app.scenes.loadSceneSettings(scene.url, function (err, parent) {
                if (!err) {
                    oldHierarchy.destroy();
                } else {
                    console.error(err);
                }
            });
        } else {
            console.error(err);
        }
    });

If you have a response for this issue, that would be great. We search for many hours without finding any solution.
Thanks in advance,

Akadream.

2

Perhaps related to this (if you mark models as static)

Also, instead of static batching, try dynamic batching.

1 Like
3

Thanks for your response !
I already tried dynamic batching and it does not worked. But i’ll try tomorrow using static models to if there any changes on the render.

4

static meshes likely won’t help.

5

Yes but we are not using any “Model” in our project. We are using “Render”

6

Having this problem too, I found a solution:

const oldHierarchy = this.app.root.findByName('Root');
const scene = this.app.scenes.find("Scene1");

const self = this;

oldHierarchy.destroy(); // destroy here so batch group are ok

self.app.scenes.loadSceneHierarchy(scene.url, function (err, parent)
{
    if (!err)
        self.app.scenes.loadSceneSettings(scene.url, function (err, parent)
        {
            if (err)
                console.error(err);
        });
    else
        console.error(err);
});

If destroy is later, the batch group doesn’t work!

const oldHierarchy = this.app.root.findByName('Root');
const scene = this.app.scenes.find("Scene1");

const self = this;

self.app.scenes.loadSceneHierarchy(scene.url, function (err, parent)
{
    if (!err)
        self.app.scenes.loadSceneSettings(scene.url, function (err, parent)
        {
            if (err)
                console.error(err);
            else
                oldHierarchy.destroy(); // destroy here,  batch group are NOT ok
        });
    else
        console.error(err);
});