Tips for debugging GPU memory shortage on MacOS?

[cakoose]

Ghostty 1.0.0, build 8469
MacOS 14.7.1
Hardware: MacBook Pro 16" M1

Sometimes, Ghostty gives me an error when I try and open a new window:

Oh, no. 😭
The renderer has failed. This is usually due to exhausting available GPU memory. Please free up available resources.

If I quit a bunch of applications, I'm able to create more windows. But is there a more precise way to see what the issue is? For example, is there a way to identify how GPU memory is being used?