BatchedTilesPlugin issue

[ErikSom]

Description

The BatchedTilesPlugin works wonders. However after moving the camera for a while, at some point suddenly the draw calls start to increase rapidly. Is this a configuration I'm missing?

Reproduction steps

You can see the behaviour in this example wait for ~ 1 minute and you will see the draw calls increase in the the top right of the screen.

Code

https://stackblitz.com/edit/vitejs-vite-zrxedgeh?file=package.json,src/main.ts

Live example

https://vitejsvitemxbuzcql-143j--5173--3b7d1e54.local-credentialless.webcontainer.io/

Screenshots & Tile Set

No response

Library Version

0.4.22

Three.js Version

0.183.2"

[ErikSom]

Additionally I have seen cases where it does not assign the custom material that I provide to constructor, after a while it goes back to using the default material:

[gkjohnson]

What I expect is happening from the screenshots is that the BatchedMesh is "filling up" and once it's full the plugin falls back to adding tile geometry as a normal objects independent of BatchedMesh, resulting in draw calls increasing. The limit for a BatchedMesh becoming "full" is likely the amount of layers possible to add in an array texture and will be system-dependent (2048 on my machine)

That said there may be a bug in the BatchedTilesPlugin causing indices to not be "freed" the way they should be when tiles are disposed of. I won't be able to look into this at the moment but it would be helpful if you'd like to take a look at the plugin and see what might be happening.

[ErikSom]

What I expect is happening from the screenshots is that the BatchedMesh is "filling up" and once it's full the plugin falls back to adding tile geometry as a normal objects independent of BatchedMesh, resulting in draw calls increasing. The limit for a BatchedMesh becoming "full" is likely the amount of layers possible to add in an array texture and will be system-dependent (2048 on my machine)

That said there may be a bug in the BatchedTilesPlugin causing indices to not be "freed" the way they should be when tiles are disposed of. I won't be able to look into this at the moment but it would be helpful if you'd like to take a look at the plugin and see what might be happening.

Hi @gkjohnson , thanks for the reply. Took a stab at it and this seems to work;
#1521