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feat(windows): a window - win32.ll, WGL on it, and a windowed Windows build

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win32.ll implements cocoa.ll's contracts over user32 and xinput: the message
pump, the held-key set and frame key in Ludic codes, the mouse with raw input
for cursor mode 2, clip-based cursor modes released on focus loss, XInput pads,
and the software framebuffer present. win32_gl.ll puts the WGL 4.1 core context
on that window (vsync, borderless full screen); gl_win.ll's context code is now
lgl_wgl_core, shared with the headless hidden window, whose win_gl_* stubs move
to gl_win_nowin.ll. audio_win.ll links Audio.* silently for now.

Verified: macOS fixpoint, ludic-dev test 135/135, selfhost-test 32/32; on the
PC gl_triangle renders identically headless and in a real window, and Maroon
Lake builds windowed and runs a playtest to frame 240 in the desktop session.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-13 02:33:53 +03:00
parent 1bc255bc40
commit 00d25dcc3e
8 changed files with 1696 additions and 442 deletions
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11
changes/windows-target.md
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@ -16,8 +16,15 @@ type: feat
- **The driver** — finds `C:\Program Files\LLVM\bin\clang.exe` when clang is not on
`%PATH%`, writes `.exe` outputs, speaks cmd.exe for its directory and cleanup commands,
and reads `argv[0]`, `%PATH%` and `$LUDIC_HOME` with either separator.
- **Not yet** — a window, `Audio.*` and `Http.*` are still macOS platform layers;
a Windows build that needs one stops with a message saying so.
- **A window** — `win32.ll` is `cocoa.ll`'s contract over user32: the held-key set and frame
key in Ludic codes, the mouse in framebuffer pixels with raw input for cursor mode 2,
cursor hide/lock/confine that lets go when the window loses the foreground, XInput pads
in SDL order with rescaled deadzones, and the software `win_present`. `win32_gl.ll` puts
the WGL context on that window with vsync and borderless full screen; a headless build
links `gl_win_nowin.ll` instead. The process is per-monitor DPI aware.
- **Not yet** — `Audio.*` links and is silent (`audio_win.ll`), the splash and
`App.set_icon` do nothing, and `Http.*` is still a macOS platform layer; a Windows build
that uses it stops with a message saying so.
- **`Gl.*` on Windows** — `gl_win.ll` makes a WGL 4.1 core context on a hidden window's DC,
and `gl_thunks_win.ll` (generated by `ludic-dev glgen` beside `gl_thunks.ll`) calls
every entry point through a table `@lgl_win_load` fills from `wglGetProcAddress`, falling