DynamicTexture performance drops over time

Questions
1

Hi!

I’m trying to implement a “fog of war” feature for my game.
I found I nice playground example: credit for aWeirdo.

Initially it runs fine, but the fps starts to drop after running the example for a couple of minutes.
After around 10 mins it runs only 30 fps.

Do you have an idea what can cause the performance drop?

Here is the playground example: https://playground.babylonjs.com/#S3U25D#3

60fps
60fps959×892 37 KB

27fps
27fps946×880 41.1 KB

Thanks!

2

Hi hi! I’m having mine run in the background to see, but I haven’t gotten a frame drop yet (about 10 min now) Not sure what’s up though I’ll keep running it to see.

3

Hi!

I think it has to be in the foreground unfortunately for all those minutes, because if the scene is in the background (or a window covers it) webgl pauses.

4

Got it! Will test again.

1 Like
5

Just a shot in the dark. But removing this line seemed to remove the slow down initial.

this.textureContext.save();

Initial lag started at about 3 and a half min. It’s gone for the double that without a problem. Can run for longer.

Edit: But ya it’s still dropping after the fact.

2 Likes
6

Thanks a lot!

I ran it for ~15 mins now and it seems to be good after your fix. (stays at 60 fps).
I looked it up what that save means, and it is really unnecessary here.

1 Like
7

It was dropping way after I think. (though I’m also running an expensive program on the side which isn’t helping my overall PC at the moment :stuck_out_tongue: )

If you continue to see stuff I think best is to remove unnecessary calls like that… :wink:

2 Likes