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Author SHA1 Message Date
Ville Lindholm
0e6865c4da
WIP: port deferred input/audio stubs to real SDL 3 APIs 
Phase 7-8 of the migration. Replaces the per-subsystem stubs added in
the earlier "builds clean" commit with proper SDL 3 implementations.

- gfxengine: add SDL_Window* accessor window_handle() so callers that
  need to talk to SDL 3's window APIs (grab, text input) can reach it.
- states.cpp mouse grab: SDL_WM_GrabInput → SDL_SetWindowMouseGrab.
  Drops the local SDL_GRAB_* / SDL_WM_GrabInput stub macros.
- states.cpp text input: SDL_EnableUNICODE → SDL_StartTextInput /
  SDL_StopTextInput. kobo.cpp event loop now handles
  SDL_EVENT_TEXT_INPUT (in both quit_requested() and the main game
  loop) and forwards each byte of the UTF-8 string as a unicode value
  to gsm.press(-1, ch) so the high-score name-entry path keeps
  working without any state-side changes.
- kobo.cpp joystick: full re-port of init_js / close_js using
  SDL_GetJoysticks (returns SDL_JoystickID array), SDL_OpenJoystick,
  SDL_CloseJoystick. options.cpp joystick enumeration already used
  the new API from the previous commit.
- sound/audio.c: replace the silent stub with a real SDL 3 backend
  built on SDL_OpenAudioDeviceStream + an SDL_AudioStreamCallback.
  The engine's existing _audio_callback (Sint16 stereo fill-buffer)
  is kept; a small adapter (sdl3_stream_callback) runs it on a
  scratch buffer and pushes the result via SDL_PutAudioStreamData.
  audio_lock/unlock now call SDL_LockAudioStream / SDL_UnlockAudioStream.

After this commit the binary opens an audio device successfully and
the joystick path resolves real SDL 3 calls. Renderer + audio +
input are now all on SDL 3 with no compat shims.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
 2026-05-28 22:02:38 +03:00
Ville Lindholm
f11b6516da
WIP: port renderer + supporting layers to SDL 3 (builds clean) 
Completes phases 3-6 of the migration plan. After this commit, the
codebase compiles and links against pure SDL 3 (no compat shim). The
binary is unverified at runtime but the build is clean.

Renderer (graphics/gfxengine.{cpp,h}):
- Replace SDL_SetVideoMode + SDL_Flip + page-flip machinery with
  SDL_CreateWindow + SDL_CreateRenderer + a streaming SDL_Texture.
  The CPU-side back buffer (softbuf) is now always ARGB8888; legacy
  HW/double-buffer/page flags are dead.
- flip() does a single full-frame SDL_UpdateTexture + SDL_RenderClear
  + SDL_RenderTexture + SDL_RenderPresent each frame. The dirtyrect
  iteration is retained only to drive widget phys_refresh() callbacks.
- SDL_SetRenderLogicalPresentation gives us letterbox scaling for free.
- SDL_SetRenderVSync replaces glSDL_VSync.
- title()/cursor() ported to SDL 3 window/cursor APIs.

Surface API (graphics/sprite.c, filters.c, window.cpp, sofont.cpp,
region.c):
- SDL_FreeSurface → SDL_DestroySurface
- SDL_FillRect → SDL_FillSurfaceRect
- SDL_SetClipRect → SDL_SetSurfaceClipRect
- SDL_SetColorKey(s, flags, key) → SDL_SetSurfaceColorKey(s, bool, key)
- SDL_SetAlpha(s, flags, a) → SDL_SetSurfaceAlphaMod + BlendMode
- SDL_SetColors → SDL_SetSurfacePalette
- SDL_CreateRGBSurface(...) → SDL_CreateSurface(w, h, format_enum)
- SDL_DisplayFormat[Alpha] → SDL_ConvertSurface(s, ARGB8888)
- SDL_MapRGB(surf->format, ...) → SDL_MapSurfaceRGB(surf, ...)
- surface->format->Field → SDL_GetPixelFormatDetails(surf->format)->field
- surface->format->Amask test → SDL_ISPIXELFORMAT_ALPHA
- surface->clip_rect → SDL_GetSurfaceClipRect

Events (kobo.cpp):
- SDL_{KEYDOWN,KEYUP,QUIT,VIDEOEXPOSE,MOUSE*,JOY*} → SDL_EVENT_*
- SDL_ACTIVEEVENT (with gain check) → SDL_EVENT_WINDOW_FOCUS_LOST
- ev.key.keysym.sym → ev.key.key (.unicode → text input, deferred)
- SDLK_PRINT/SYSREQ → SDLK_PRINTSCREEN; lowercase SDLK_p/y/n → uppercase
- ev.motion.x/y for button events → ev.button.x/y (struct layout differs)
- KMOD_META → SDL_KMOD_GUI
- SDL_INIT_NOPARACHUTE → SDL_Init(0) (no parachute by default in SDL 3)

Keymap (gamectl.{cpp,h}):
- SDLKey → SDL_Keycode
- SDLK_KP{1..9} → SDLK_KP_{1..9}

Stubs deferred for later phases (binary will run but with degraded
behavior):
- sound/audio.c: _start_SDL_output returns -1 immediately; SDL 1.2
  audio callback model needs full rewrite onto SDL_AudioStream.
- kobo.cpp init_js/close_js: SDL 3 joystick API uses instance IDs;
  re-port deferred.
- states.cpp SDL_WM_GrabInput/SDL_EnableUNICODE: need window pointer
  exposed from gfxengine; stubbed.
- gamectl.cpp SDL_EnableKeyRepeat: removed; relies on ev.key.repeat.

Other adjustments:
- options.cpp: GFX_DRIVER_GLSDL menu paths removed; show vsync option
  always (renderer handles it).
- sound/a_wave.c: AUDIO_S8/AUDIO_S16SYS → SDL_AUDIO_S8/S16, SDL_FreeWAV
  → SDL_free.
- gfxengine.cpp: SDL_putenv("SDL_VIDEO_CENTERED=1") obsolete (handled
  by SDL_CreateWindow defaults).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
 2026-05-28 21:54:55 +03:00
Ville Lindholm
dbc223eb84
Initial commit 
Import existing source tree; original VCS history is no longer available.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
 2026-05-28 16:35:31 +03:00