This would require rustual-boy to export its version:

pub const VERSION: &'static str = env!("CARGO_PKG_VERSION");

As it looks like we'll end up with a few different ways to display the left/right images (anaglyph, left/right, etc), we should have a way to change which one we're using at runtime. Does libretro support run-time configuration options generally, and are we able to change the output frame size on-the-fly?

See retro_pixel_format_t

I wonder if retroarch is giving us a different sample rate than the one we ask for? Ideally we should be pushing 41667hz, but it's likely 44100 or something.

Tested on Windows.

Currently, log output is done through stderr. Libretro has a logging interface we should use instead. See here for how to deal with the fact that libretro's logging function is variadic.

Probably something weird timing-wise. Tested on Windows.

Currently, we're passing each sample to audio_sample() as it's appended to the sink, but we should do our own buffering and calling audio_sample_batch() instead.

yupferris - Today at 12:12 AM
because another thing we may face pretty soon here is removing the std dependency from the core
we may not have to, but I believe certain platforms like android or 3ds would have problems with std

SerDe seems excellent, especially with the new custom derive feature in rustc, allowing for automatic implementations of Serialize/Deserialize.

The main thing to consider is the format. MessagePack and Bincode both seem appropriate here, but this needs some investigation. Luckily SerDe is format-agnostic :)

Seen this mentioned a couple times, and saw it once or twice myself. :)