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Stefan ArentzandClaude Fable 5 b4fc82a0cc Upgrade the frontend from SDL2 to SDL3 (#207)
* Upgrade the frontend from SDL2 to SDL3

Port the ewm crate from the sdl2 crate (0.38) to sdl3 (0.18.4),
linking against Homebrew SDL3 via pkg-config. Behavior is unchanged.

- sdl.rs: SDL3 removed SDL_RendererInfo, so the texture-format probe
  walks the renderer properties instead; the accelerated check becomes
  a software-renderer name check (the ACCELERATED flag is gone), and
  RGB888 is now spelled XRGB8888.
- snd.rs: the SDL2 AudioQueue becomes an SDL3 audio stream. The
  queued_bytes() backpressure cap replaces AudioQueue::size(), and the
  prime-then-resume order keeps the underrun headroom (SDL3 devices
  start paused). SDL3 has no per-device sample-buffer request.
- boo.rs/one.rs/two.rs: into_canvas() is infallible with no builder,
  set_logical_size() takes a presentation mode, the timer subsystem is
  replaced by sdl3::timer::ticks(), text input is per-window,
  fullscreen is a bool, Keycode::Num1 is Keycode::_1, and the game
  controller subsystem is now gamepads with positional button names
  (A/B/X/Y -> South/East/West/North).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* CI: build on ubuntu-26.04 with libsdl3-dev

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-06 20:09:27 -04:00
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