egui demo library

This crate contains example code for egui.

The demo library is a separate crate for three reasons:

• To ensure it only uses the public egui api.
• To remove the amount of code in egui proper.
• To make it easy for 3rd party egui integrations to use it for tests.
  • See for instance https://github.com/not-fl3/egui-miniquad/blob/master/examples/demo.rs

This crate also contains benchmarks for egui. Run them with

# Run all benchmarks
cargo bench -p egui_demo_lib 

# Run a single benchmark
cargo bench -p egui_demo_lib "benchmark name"

# Profile benchmarks with cargo-flamegraph (--root flag is necessary for MacOS)
CARGO_PROFILE_BENCH_DEBUG=true cargo flamegraph --bench benchmark --root -p egui_demo_lib  -- --bench "benchmark name"

# Profile with cargo-instruments
CARGO_PROFILE_BENCH_DEBUG=true cargo instruments --profile bench --bench benchmark -p egui_demo_lib -t time -- --bench "benchmark name"