Possible memory issue with model asset unloading

Help & Support
,
1

After manually unloading model asset (playcanvas generated glb from fbx upload) the usage of VRAM goes extremely up (instead of going down…).

For example:

  • manually loading GLB model asset via asset-registry load method
  • this GLB (asset size ~14MB) does about 13.3MB in VRAM
  • after unloading this specific via asset unload method, the VRAM goes extremely high (in this case 150MB)
  • repeating previous three steps leads to memory leak with gradually increasing the VRAM stats

I have tested this issue with multiple 3d models.

  • Native playcanvas profiler shows Vram.total: NaN after a while.
  • Using custom mini stats.

example project: PlayCanvas 3D HTML5 Game Engine
(feel free to clone)

  • pres A key to load the model
  • pres S key to unload the model
  • modify target asset on root entity, myLoader script
2

Thanks for all the details, I’ll investigate this next week.
I’ve created a tracking ticket: https://github.com/playcanvas/engine/issues/4531

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3

I think, there is possibility of this being only the stats issue. While the stats are showing ~130MB, the graph looks just like on the beginning of the launch (empty or 0.2MB).

image

4

Thanks, looking forward

5

The fix is here

only reporting has been changed, behaviour is correct.

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