rewrite it in rust #1

2024-11-10T19:37:01Z

SonicSwordcane commented

2024-11-10 19:37:01 +00:00

I was struggling to build a cross-platform desktop application with C, both because I'm a novice at C (and native applications in general) and because there weren't many libraries to do what I need.

Rewrite the app in Rust instead of C. Use winit for window management and cpal for audio, instead of SDL. Use wgpu for graphics; it's backed by the same libraries as SDL, but also supports portable shaders. Use Dear ImGui rust bindings for a GUI, instead of nuklear.

Rewriting the app in Rust has a few advantages:

I actually know Rust, so I can develop more quickly.
FFI is reasonably easy, meaning that the project can use C libraries (shrooms-vb-core) and C++ libraries (dear imgui) without makefile surgery.
Rust has an installer, package manager, and distribution tooling. All of these are automatically cross-platform and fairly easy to set up.
Rust has a high-quality portable standard library and many easy-to-use "crates"/packages, so I don't have to spend a lot of time writing/integrating an .ini parser/CLI parser/ring buffer/dictionary
Rust is cross-platform by default, so I am a lot more confident that this will run on OSX.

There's some downsides too:

Not a ton of people in the VB community know Rust, so it'll be hard for other people to contribute.
Builds are way slower, especially in release mode.
The app is much bigger (rust binaries are already big, and I pull in libraries like a node.js dev).
The app is slower than a pure C application. I haven't set up cross-platform LTO, and winit/wgpu do more than SDL did. However, I don't think it's noticeably slower, since the VB only runs at 20mhz anyway.
I think this loses compatibility with Windows XP (Rust runs there, but winit is relatively new and might not support old-timey platforms like that).

I was struggling to build a cross-platform desktop application with C, both because I'm a novice at C (and native applications in general) and because there weren't many libraries to do what I need. Rewrite the app in Rust instead of C. Use [winit](https://github.com/rust-windowing/winit) for window management and [cpal](https://github.com/RustAudio/cpal) for audio, instead of SDL. Use [wgpu](https://wgpu.rs/) for graphics; it's backed by the same libraries as SDL, but also supports portable shaders. Use [Dear ImGui rust bindings](https://github.com/imgui-rs/imgui-rs) for a GUI, instead of nuklear. Rewriting the app in Rust has a few advantages: - I actually know Rust, so I can develop more quickly. - FFI is reasonably easy, meaning that the project can use C libraries (shrooms-vb-core) and C++ libraries (dear imgui) without makefile surgery. - Rust has an [installer](https://rustup.rs/), [package manager](https://crates.io/), and [distribution tooling](https://opensource.axo.dev/cargo-dist/). All of these are automatically cross-platform and fairly easy to set up. - Rust has a high-quality portable standard library and many easy-to-use "crates"/packages, so I don't have to spend a lot of time writing/integrating an .ini parser/CLI parser/ring buffer/dictionary - Rust is cross-platform by default, so I am a lot more confident that this will run on OSX. There's some downsides too: - Not a ton of people in the VB community know Rust, so it'll be hard for other people to contribute. - Builds are way slower, especially in release mode. - The app is much bigger (rust binaries are already big, and I pull in libraries like a node.js dev). - The app is slower than a pure C application. I haven't set up cross-platform LTO, and winit/wgpu do more than SDL did. However, I don't think it's _noticeably_ slower, since the VB only runs at 20mhz anyway. - I think this loses compatibility with Windows XP (Rust runs there, but winit is relatively new and might not support old-timey platforms like that).

SonicSwordcane added 17 commits 2024-11-10 19:37:02 +00:00

Set up a rust UI 59e14b43e8

Beginnings of rust emulation 40c4561748

Fix non-windows compilation 8fdff927eb

Use one texture with two channels for video b025f72604

Actually do anaglyph a0e39796bf

Turn off vulkan because it's slow on windows 8bba7b9e1b

Add audio, fix timing 70373647fb

Turn off LTO for now, makes builds quite slow 7c9e9c7fa4

Turn vulkan back on because my linux partition needs it 756835f90e

Make menu items functional 593475960d

Support resizing the window 75fa3be25c