App Exits Randomly about historyofeverything

[filiph]

I think I've seen this as well, in profile (~= production) mode. No error was logged.

[luigi-rosso]

After first opening the timeline in profile mode, I saw memory usage around 720MB.

After scrolling around a bit it popped to 770 with a peak of 899. This seems crazy high to me.

I think the reason our memory usage is so high is because the images need to be decoded and stored as raw RGBA at runtime. I also think SKIA must be generating mipmaps for them for the filtering.

We exported them at best quality from Nima, but this isn't really necessary as we render at a much lower resolution in the app. I can write a script that goes through and resizes the atlases. I'll move all the originals into a new folder and have a script that can be run to re-generate the ones in the assets folder from the originals. That way we can play around with different resolutions and see which is the best balance for memory/quality.

[luigi-rosso]

More proof that it's the images. These lists of images are the arrays of atlases each actor stores.

[luigi-rosso]

If I 1/4 (512x512 max) the images, it goes down to 220MB. Quality is bad.
At 1/2 (1024x1024 max) the images, it goes down to 443.8MB. Quality change is only noticeable in some cases, but generally seems good.

A few more options:
Change some of the larger images (the galaxy, the big bang) to Flare (vector) animations. These seem like an easy win.

Look into loading the assets on demand instead of everything at boot.

[luigi-rosso]

There are two utility scripts: tools/resize_large_assets.dart and tools/find_large_assets.dart