kobodl/graphics/region.h
Ville Lindholm 762b095462
WIP: delete glSDL shim, replace with sdl_compat.h
Step 1+2 of the SDL 3 migration. The 2300-line graphics/glSDL.{c,h}
OpenGL-on-top-of-SDL-1.2 shim is obsolete under SDL 3 (SDL_Renderer
does what glSDL did natively), and its #define overrides of SDL
surface APIs collided directly with SDL 3's SDL_oldnames.h.

- Add graphics/sdl_compat.h: a one-line umbrella that just pulls in
  <SDL3/SDL.h>.
- Replace every #include "glSDL.h" with #include "sdl_compat.h" (15
  files across the tree).
- Delete graphics/glSDL.c, graphics/glSDL.h.
- Drop glSDL.c from graphics/CMakeLists.txt.
- Remove GFX_DRIVER_GLSDL from the gfx_drivers_t enum and from all
  switches/conditions in gfxengine.cpp.
- Drop the glSDL_VSync() call site (will be re-introduced as
  SDL_SetRenderVSync once gfxengine is ported to SDL_Renderer).
- Drop the two glSDL_Invalidate() calls in window.cpp (texture
  re-upload hints with no equivalent in a pure-surface compositor).
- options.cpp: remove the now-empty "OpenGL/glSDL" menu item; force
  videodriver to GFX_DRIVER_SDL2D.
- prefs.cpp: collapse legacy GLSDL setting onto SDL2D on load.

After this commit the macro-collision wall is gone (renamed_-token
errors drop from many to zero). The build still fails on the next
layer of work: SDL 1.2 surface APIs that no longer exist
(SDL_FreeSurface, SDL_SetAlpha, SDL_CreateRGBSurface, SDL_DisplayFormat,
SDL_PixelFormat struct member access, SDL audio callback API, etc.).

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

Co-Authored-By: Claude <noreply@anthropic.com>
2026-05-28 21:37:01 +03:00

62 lines
1.7 KiB
C

/*(LGPL)
----------------------------------------------------------------------
region.h - Graphics Engine
----------------------------------------------------------------------
* Copyright (C) 2007 David Olofson
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef KOBO_REGION_H
#define KOBO_REGION_H
#include "sdl_compat.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Region
* Describes an area as a number of pixel spaced rows,
* each containing zero or more spans on the form <start, end>.
*/
typedef struct RGN_region
{
int rows;
Uint16 **spans;
} RGN_region;
/* Construct region by scanning an SDL surface */
RGN_region *RGN_ScanMask(SDL_Surface *src, Uint32 key);
/* Free a region */
void RGN_FreeRegion(RGN_region *rgn);
/* Set target for region rendering */
void RGN_Target(SDL_Surface *tgt);
/* Select and position region for subsequent operations */
void RGN_SetRegion(RGN_region *rgn, int xpos, int ypos);
/* Blit to region! */
int RGN_Blit(SDL_Surface *src, SDL_Rect *sr, int x, int y);
#ifdef __cplusplus
};
#endif
#endif /* KOBO_REGION_H */