Tips

Here are some personal small tips if you want to modify or debug the infra layer.

Utilize timeline tracing

You know, the one that is visualized in chrome://tracing. I have written down how to capture it here. I have personally find it quite helpful (much more helpful than debugging or print-based logging).

They can be create from both C++ engine (TRACE_EVENT0 etc) and Dart (Timeline etc).

Compare with theory

I have faced a ton of weird cases along the journey to 60FPS when analyzing timeline. The cause and solution vary a lot, but when get lost, try to compare the experimental result with the theory, and see why and how to solve the difference. Hopefully this will make the mind cleaner.