Cactice/cargo-mobile-experiment

Just playing around with cargo mobile

wgpu-app

This is just the wgpu-rs triangle example with a handful of small changes, which I'll outline below:

• Annotated main with #[mobile_entry_point], which generates all the extern functions we need for mobile. Note that the name of the function doesn't actually matter for this.
• Changes conditionally compiled on Android:
  • Use android_logger instead of wgpu-subscriber
  • Use Rgba8UnormSrgb instead of Bgra8UnormSrgb (ideally, the supported format would be detected dynamically instead)
  • Use std::thread::sleep to shoddily workaround raw_window_handle requirements
  • Render directly upon MainEventsCleared instead of calling request_redraw, since winit doesn't implement that method on Android yet

To run this on desktop, just do cargo run like normal! For mobile, use cargo android run and cargo apple run respectively (or use cargo android open/cargo apple open to open in Android Studio and Xcode respectively).