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Clean up sdlayer a bit

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git-svn-id: https://svn.eduke32.com/eduke32@4432 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2014-04-12 08:45:26 +00:00
parent 82f5a3f39c
commit 45dec87cf0
1 changed files with 167 additions and 158 deletions
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325
polymer/eduke32/build/src/sdlayer.c
View file

@ -18,7 +18,7 @@
#include "build.h"
#include "osd.h"
#if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3) // SDL 1.2
#if SDL_MAJOR_VERSION==1 // SDL 1.2
// for SDL_WaitEventTimeout defined below
#include <SDL/SDL_events.h>
#endif
@ -70,6 +70,7 @@ char quitevent=0, appactive=1, novideo=0;
// video
static SDL_Surface *sdl_surface/*=NULL*/;
static SDL_Surface *sdl_buffersurface=NULL;
#if SDL_MAJOR_VERSION==2
static SDL_Palette *sdl_palptr=NULL;
static SDL_Window *sdl_window=NULL;
@ -77,6 +78,7 @@ static SDL_GLContext sdl_context=NULL;
static SDL_Texture *sdl_texture=NULL;
static SDL_Renderer *sdl_renderer=NULL;
#endif
int32_t xres=-1, yres=-1, bpp=0, fullscreen=0, bytesperline;
intptr_t frameplace=0;
int32_t lockcount=0;
@ -119,17 +121,13 @@ HWND win_gethwnd(void)
#if SDL_MAJOR_VERSION==1
if (SDL_GetWMInfo(&wmInfo) != 1)
#else
if (SDL_GetWindowWMInfo(sdl_window, &wmInfo) != SDL_TRUE)
#endif
{
// initprintf("win_gethwnd: SDL_GetWindowWMInfo() failed: %s\n", SDL_GetError());
return 0;
}
#if SDL_MAJOR_VERSION==1
return wmInfo.window;
#else
if (SDL_GetWindowWMInfo(sdl_window, &wmInfo) != SDL_TRUE)
return 0;
if (wmInfo.subsystem == SDL_SYSWM_WINDOWS)
return wmInfo.info.win.window;
#endif
@ -294,7 +292,7 @@ void setvsync(int32_t sync)
if (vsync_render == sync) return;
vsync_render = sync;
# if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3)
# if SDL_MAJOR_VERSION == 1
resetvideomode();
if (setgamemode(fullscreen,xdim,ydim,bpp))
OSD_Printf("restartvid: Reset failed...\n");
@ -600,19 +598,25 @@ int32_t initinput(void)
mousegrab = 0;
memset(key_names,0,sizeof(key_names));
#if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3)
for (i=0; i<SDLK_LAST; i++)
{
if (!keytranslation[i]) continue;
Bstrncpyz(key_names[ keytranslation[i] ], SDL_GetKeyName((SDLKey)i), sizeof(key_names[i]));
}
#if SDL_MAJOR_VERSION == 1
i = SDLK_LAST-1;
#else
for (i=0; i<SDL_NUM_SCANCODES; i++)
i = SDL_NUM_SCANCODES-1;
#endif
for (; i>=0; i--)
{
if (!keytranslation[i]) continue;
Bstrncpyz(key_names[ keytranslation[i] ], SDL_GetKeyName(SDL_SCANCODE_TO_KEYCODE(i)), sizeof(key_names[i]));
}
Bstrncpyz(key_names[ keytranslation[i] ],
#if SDL_MAJOR_VERSION == 1
SDL_GetKeyName((SDLKey)i),
#else
SDL_GetKeyName(SDL_SCANCODE_TO_KEYCODE(i)),
#endif
sizeof(key_names[i]));
}
if (!SDL_InitSubSystem(SDL_INIT_JOYSTICK))
{
@ -798,6 +802,7 @@ void uninitmouse(void)
static inline char grabmouse_low(char a)
{
#if !defined __ANDROID__ && (!defined DEBUGGINGAIDS || defined _WIN32 || defined __APPLE__)
#if SDL_MAJOR_VERSION==1
SDL_ShowCursor(a ? SDL_DISABLE : SDL_ENABLE);
return (SDL_WM_GrabInput(a ? SDL_GRAB_ON : SDL_GRAB_OFF) != (a ? SDL_GRAB_ON : SDL_GRAB_OFF));
@ -808,6 +813,7 @@ static inline char grabmouse_low(char a)
SDL_SetWindowGrab(sdl_window, a ? SDL_TRUE : SDL_FALSE);
return SDL_SetRelativeMouseMode(a ? SDL_TRUE : SDL_FALSE);
#endif
#endif
}
//
@ -950,7 +956,7 @@ uint32_t getticks(void)
// high-resolution timers for profiling
uint64_t getu64ticks(void)
{
#if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3) // SDL 1.2
#if (SDL_MAJOR_VERSION == 1) // SDL 1.2
# if defined _WIN32
return win_getu64ticks();
# elif defined __APPLE__
@ -974,14 +980,14 @@ uint64_t getu64ticks(void)
# pragma message "Using low-resolution (1ms) timer for getu64ticks. Profiling will work badly."
return SDL_GetTicks();
# endif
#else
#else // SDL 2.0
return SDL_GetPerformanceCounter();
#endif
}
uint64_t getu64tickspersec(void)
{
#if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3) // SDL 1.2
#if (SDL_MAJOR_VERSION == 1) // SDL 1.2
# if defined _WIN32
return win_timerfreq;
# elif defined __APPLE__
@ -996,7 +1002,7 @@ uint64_t getu64tickspersec(void)
# else
return 1000;
# endif
#else // SDL 1.3
#else // SDL 2.0
return SDL_GetPerformanceFrequency();
#endif
}
@ -1061,17 +1067,39 @@ static int sortmodes(const void *a_, const void *b_)
return 0;
}
#define ADDMODE(x,y,c,f) do { \
if (validmodecnt<MAXVALIDMODES) { \
int32_t mn; \
for(mn=0;mn<validmodecnt;mn++) \
if (validmode[mn].xdim==x && validmode[mn].ydim==y && \
validmode[mn].bpp==c && validmode[mn].fs==f) break; \
if (mn==validmodecnt) { \
validmode[validmodecnt].xdim=x; \
validmode[validmodecnt].ydim=y; \
validmode[validmodecnt].bpp=c; \
validmode[validmodecnt].fs=f; \
validmodecnt++; \
/*initprintf(" - %dx%d %d-bit %s\n", x, y, c, (f&1)?"fullscreen":"windowed");*/ \
} \
} \
} while (0)
#define CHECK(w,h) if ((w < maxx) && (h < maxy))
static char modeschecked=0;
#if SDL_MAJOR_VERSION==1
void getvalidmodes(void)
{
int32_t i, maxx=0, maxy=0;
#if SDL_MAJOR_VERSION==1
int32_t j;
static int32_t cdepths[] =
static int32_t cdepths [] =
{
8,
#ifdef USE_OPENGL
16,24,32,
16, 24, 32,
#endif
0
};
@ -1081,36 +1109,13 @@ void getvalidmodes(void)
pf.palette = NULL;
pf.BitsPerPixel = 8;
pf.BytesPerPixel = 1;
#else
SDL_DisplayMode dispmode;
#endif
if (modeschecked || novideo) return;
validmodecnt=0;
// initprintf("Detecting video modes:\n");
#define ADDMODE(x,y,c,f) do { \
if (validmodecnt<MAXVALIDMODES) { \
int32_t mn; \
for(mn=0;mn<validmodecnt;mn++) \
if (validmode[mn].xdim==x && validmode[mn].ydim==y && \
validmode[mn].bpp==c && validmode[mn].fs==f) break; \
if (mn==validmodecnt) { \
validmode[validmodecnt].xdim=x; \
validmode[validmodecnt].ydim=y; \
validmode[validmodecnt].bpp=c; \
validmode[validmodecnt].fs=f; \
validmodecnt++; \
/*initprintf(" - %dx%d %d-bit %s\n", x, y, c, (f&1)?"fullscreen":"windowed");*/ \
} \
} \
} while (0)
#define CHECK(w,h) if ((w < maxx) && (h < maxy))
// initprintf("Detecting video modes:\n");
// do fullscreen modes first
#if SDL_MAJOR_VERSION==1
for (j=0; cdepths[j]; j++)
{
# ifdef USE_OPENGL
@ -1122,16 +1127,16 @@ void getvalidmodes(void)
// We convert paletted contents to non-paletted
modes = SDL_ListModes((cdepths[j] == 8) ? NULL : &pf, SURFACE_FLAGS | SDL_FULLSCREEN);
if (modes == (SDL_Rect **)0)
if (modes == (SDL_Rect **) 0)
{
if (cdepths[j] > 8) cdepths[j] = -1;
continue;
}
if (modes == (SDL_Rect **)-1)
if (modes == (SDL_Rect **) -1)
{
for (i=0; defaultres[i][0]; i++)
ADDMODE(defaultres[i][0],defaultres[i][1],cdepths[j],1);
ADDMODE(defaultres[i][0], defaultres[i][1], cdepths[j], 1);
}
else
{
@ -1149,7 +1154,43 @@ void getvalidmodes(void)
}
}
}
#else // here SDL_MAJOR_VERSION==2
if (maxx == 0 && maxy == 0)
{
initprintf("No fullscreen modes available!\n");
maxx = MAXXDIM; maxy = MAXYDIM;
}
// add windowed modes next
for (j=0; cdepths[j]; j++)
{
#ifdef USE_OPENGL
if (nogl && cdepths[j] > 8) continue;
#endif
if (cdepths[j] < 0) continue;
for (i=0; defaultres[i][0]; i++)
CHECK(defaultres[i][0], defaultres[i][1])
ADDMODE(defaultres[i][0], defaultres[i][1], cdepths[j], 0);
}
qsort((void *) validmode, validmodecnt, sizeof(struct validmode_t), &sortmodes);
modeschecked=1;
}
#else
void getvalidmodes(void)
{
int32_t i, maxx=0, maxy=0;
SDL_DisplayMode dispmode;
if (modeschecked || novideo) return;
validmodecnt=0;
// initprintf("Detecting video modes:\n");
// do fullscreen modes first
for (i=0; i<SDL_GetNumDisplayModes(0); i++)
{
SDL_GetDisplayMode(0, i, &dispmode);
@ -1167,7 +1208,6 @@ void getvalidmodes(void)
maxy = dispmode.h;
}
}
#endif
if (maxx == 0 && maxy == 0)
{
initprintf("No fullscreen modes available!\n");
@ -1175,39 +1215,26 @@ void getvalidmodes(void)
}
// add windowed modes next
#if SDL_MAJOR_VERSION==1
for (j=0; cdepths[j]; j++)
{
#ifdef USE_OPENGL
if (nogl && cdepths[j] > 8) continue;
#endif
if (cdepths[j] < 0) continue;
for (i=0; defaultres[i][0]; i++)
CHECK(defaultres[i][0],defaultres[i][1])
ADDMODE(defaultres[i][0],defaultres[i][1],cdepths[j],0);
}
#else // here SDL_MAJOR_VERSION==2
for (i=0; defaultres[i][0]; i++)
CHECK(defaultres[i][0],defaultres[i][1])
{
CHECK(defaultres[i][0], defaultres[i][1])
{
// HACK: 8-bit == Software, 32-bit == OpenGL
ADDMODE(defaultres[i][0],defaultres[i][1],8,0);
ADDMODE(defaultres[i][0], defaultres[i][1], 8, 0);
#ifdef USE_OPENGL
if (!nogl)
ADDMODE(defaultres[i][0],defaultres[i][1],32,0);
ADDMODE(defaultres[i][0], defaultres[i][1], 32, 0);
#endif
}
}
qsort((void *) validmode, validmodecnt, sizeof(struct validmode_t), &sortmodes);
modeschecked=1;
}
#endif
#undef CHECK
#undef ADDMODE
qsort((void *)validmode, validmodecnt, sizeof(struct validmode_t), &sortmodes);
modeschecked=1;
}
//
// checkvideomode() -- makes sure the video mode passed is legal
//
@ -1305,7 +1332,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
int32_t regrab = 0;
#ifdef USE_OPENGL
static int32_t warnonce = 0;
# if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3)
# if (SDL_MAJOR_VERSION == 1)
static int32_t ovsync = 1;
# endif
#endif
@ -1376,7 +1403,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
{ SDL_GL_MULTISAMPLEBUFFERS, glmultisample > 0 },
{ SDL_GL_MULTISAMPLESAMPLES, glmultisample },
{ SDL_GL_STENCIL_SIZE, 1 },
# if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3)
# if SDL_MAJOR_VERSION == 1
{ SDL_GL_SWAP_CONTROL, vsync_render },
# endif
};
@ -1407,7 +1434,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
/* HACK: changing SDL GL attribs only works before surface creation,
so we have to create a new surface in a different format first
to force the surface we WANT to be recreated instead of reused. */
# if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3)
# if SDL_MAJOR_VERSION == 1
if (vsync_render != ovsync)
{
if (sdl_surface)
@ -1464,7 +1491,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
#endif // defined USE_OPENGL
{
initprintf("Setting video mode %dx%d (%d-bpp %s)\n",
x,y,c, ((fs&1) ? "fullscreen" : "windowed"));
x, y, c, ((fs&1) ? "fullscreen" : "windowed"));
#if SDL_MAJOR_VERSION==1
// We convert paletted contents to non-paletted
sdl_surface = SDL_SetVideoMode(x, y, 0, SURFACE_FLAGS | ((fs&1)?SDL_FULLSCREEN:0));
@ -1477,61 +1504,52 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
if (!sdl_buffersurface)
{
initprintf("Unable to set video mode: SDL_CreateRGBSurface failed: %s\n",
SDL_GetError());
SDL_GetError());
return -1;
}
#else
#define SDL2_VIDEO_ERR(XX) { initprintf("Unable to set video mode: " XX " failed: %s\n", SDL_GetError()); destroy_window_resources(); return -1; }
#define SDL2_VIDEO_FALLBACK(XX) { initprintf("Falling back to SDL_GetWindowSurface: " XX " failed: %s\n", SDL_GetError()); }
#define SDL2_RENDERER_DESTROY(XX) SDL_DestroyRenderer(XX), XX = NULL
// init
sdl_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,SDL_WINDOWPOS_UNDEFINED,
x,y, ((fs&1)?SDL_WINDOW_FULLSCREEN:0));
sdl_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
x, y, ((fs&1) ? SDL_WINDOW_FULLSCREEN : 0));
if (!sdl_window)
{
initprintf("Unable to set video mode: SDL_CreateWindow failed: %s\n",
SDL_GetError());
return -1;
}
SDL2_VIDEO_ERR("SDL_CreateWindow");
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, 0);
if (!sdl_renderer)
{
initprintf("Falling back to SDL_GetWindowSurface: SDL_CreateRenderer failed: %s\n",
SDL_GetError());
}
SDL2_VIDEO_FALLBACK("SDL_CreateRenderer")
else
{
SDL_RendererInfo sdl_rendererinfo;
SDL_GetRendererInfo(sdl_renderer, &sdl_rendererinfo);
if (sdl_rendererinfo.flags & SDL_RENDERER_SOFTWARE) // this would be useless
{
SDL_DestroyRenderer(sdl_renderer);
sdl_renderer = NULL;
}
SDL2_RENDERER_DESTROY(sdl_renderer);
else
{
sdl_texture = SDL_CreateTexture(sdl_renderer, SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STATIC, x, y);
SDL_TEXTUREACCESS_STATIC, x, y);
if (!sdl_texture)
{
initprintf("Falling back to SDL_GetWindowSurface: SDL_CreateTexture failed: %s\n",
SDL_GetError());
SDL_DestroyRenderer(sdl_renderer);
sdl_renderer = NULL;
SDL2_VIDEO_FALLBACK("SDL_CreateTexture");
SDL2_RENDERER_DESTROY(sdl_renderer);
}
}
}
if (sdl_renderer && sdl_texture)
{
sdl_surface = SDL_CreateRGBSurface(0, x, y, 32, 0, 0, 0, 0);
if (!sdl_surface)
if (sdl_texture)
{
initprintf("Falling back to SDL_GetWindowSurface: SDL_CreateRGBSurface failed: %s\n",
SDL_GetError());
SDL_DestroyTexture(sdl_texture);
sdl_texture = NULL;
SDL_DestroyRenderer(sdl_renderer);
sdl_renderer = NULL;
sdl_surface = SDL_CreateRGBSurface(0, x, y, 32, 0, 0, 0, 0);
if (!sdl_surface)
{
SDL2_VIDEO_FALLBACK("SDL_CreateRGBSurface");
SDL_DestroyTexture(sdl_texture);
sdl_texture = NULL;
SDL2_RENDERER_DESTROY(sdl_renderer);
}
}
}
@ -1539,28 +1557,24 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
{
sdl_surface = SDL_GetWindowSurface(sdl_window);
if (!sdl_surface)
{
initprintf("Unable to set video mode: SDL_GetWindowSurface failed: %s\n",
SDL_GetError());
destroy_window_resources();
return -1;
}
SDL2_VIDEO_ERR("SDL_GetWindowSurface");
}
sdl_buffersurface = SDL_CreateRGBSurface(0, x, y, c, 0, 0, 0, 0);
if (!sdl_buffersurface)
{
initprintf("Unable to set video mode: SDL_CreateRGBSurface failed: %s\n",
SDL_GetError());
destroy_window_resources();
return -1;
}
SDL2_VIDEO_ERR("SDL_CreateRGBSurface");
if (!sdl_palptr)
sdl_palptr = SDL_AllocPalette(256);
if (SDL_SetSurfacePalette(sdl_buffersurface, sdl_palptr) < 0)
initprintf("SDL_SetSurfacePalette failed: %s\n", SDL_GetError());
#undef SDL2_VIDEO_ERR
#undef SDL2_VIDEO_FALLBACK
#undef SDL2_RENDERER_DESTROY
#endif
}
@ -1593,17 +1607,14 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
//sprintf(t, "%s (%dx%d %s)", apptitle, x, y, ((fs) ? "fullscreen" : "windowed"));
#if SDL_MAJOR_VERSION == 1
SDL_WM_SetCaption(apptitle, 0);
if (appicon)
SDL_WM_SetIcon(appicon, 0);
#else
SDL_SetWindowTitle(sdl_window, apptitle);
#endif
}
if (appicon)
{
#if SDL_MAJOR_VERSION==1
SDL_WM_SetIcon(appicon, 0);
#else
SDL_SetWindowIcon(sdl_window, appicon);
if (appicon)
SDL_SetWindowIcon(sdl_window, appicon);
#endif
}
@ -1888,11 +1899,11 @@ void showframe(int32_t w)
if (palfadedelta)
fullscreen_tint_gl(palfadergb.r, palfadergb.g, palfadergb.b, palfadedelta);
# if SDL_MAJOR_VERSION==1
#if SDL_MAJOR_VERSION==1
SDL_GL_SwapBuffers();
# else
#else
SDL_GL_SwapWindow(sdl_window);
# endif
#endif
return;
}
#endif
@ -1905,25 +1916,30 @@ void showframe(int32_t w)
while (lockcount) enddrawing();
}
#if SDL_MAJOR_VERSION==1
// deferred palette updating
if (needpalupdate)
{
#if SDL_MAJOR_VERSION==1
SDL_SetColors(sdl_buffersurface, sdlayer_pal, 0, 256);
// same as:
//SDL_SetPalette(sdl_buffersurface, SDL_LOGPAL|SDL_PHYSPAL, pal, 0, 256);
#else
if (SDL_SetPaletteColors(sdl_palptr, sdlayer_pal, 0, 256) < 0)
initprintf("SDL_SetPaletteColors failed: %s\n", SDL_GetError());
#endif
needpalupdate = 0;
}
SDL_BlitSurface(sdl_buffersurface, NULL, sdl_surface, NULL);
#if SDL_MAJOR_VERSION==1
SDL_Flip(sdl_surface);
#else
// deferred palette updating
if (needpalupdate)
{
if (SDL_SetPaletteColors(sdl_palptr, sdlayer_pal, 0, 256) < 0)
initprintf("SDL_SetPaletteColors failed: %s\n", SDL_GetError());
needpalupdate = 0;
}
SDL_BlitSurface(sdl_buffersurface, NULL, sdl_surface, NULL);
if (sdl_renderer && sdl_texture)
{
SDL_UpdateTexture(sdl_texture, NULL, sdl_surface->pixels, sdl_surface->pitch);
@ -1942,7 +1958,6 @@ void showframe(int32_t w)
#endif
}
//
// setpalette() -- set palette values
//
@ -2020,18 +2035,16 @@ int32_t setgamma(void)
gammaTable[i] = gammaTable[i + 256] = gammaTable[i + 512] = (uint16_t)max(0.f,(double)min(0xffff,val*256));
}
#if SDL_MAJOR_VERSION==1
i = SDL_SetGammaRamp(&gammaTable[0],&gammaTable[256],&gammaTable[512]);
if (i != -1)
#else
i = INT32_MIN;
if (sdl_window)
i = SDL_SetWindowGammaRamp(
sdl_window,&gammaTable[0],&gammaTable[256],&gammaTable[512]);
#endif
#if SDL_MAJOR_VERSION==1
if (i != -1)
#else
if (i < 0)
{
if (i != INT32_MIN)
@ -2112,7 +2125,7 @@ int32_t handleevents(void)
{
switch (ev.type)
{
#if (SDL_MAJOR_VERSION > 1 || (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION > 2))
#if SDL_MAJOR_VERSION==2
case SDL_TEXTINPUT:
j = 0;
do
@ -2221,25 +2234,21 @@ int32_t handleevents(void)
{
case SDL_WINDOWEVENT_FOCUS_GAINED:
appactive = 1;
# if !defined DEBUGGINGAIDS || defined _WIN32
if (mousegrab && moustat)
grabmouse_low(1);
# endif
# ifdef _WIN32
#ifdef _WIN32
if (backgroundidle)
SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);
# endif
#endif
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
appactive = 0;
# if !defined DEBUGGINGAIDS || defined _WIN32
if (mousegrab && moustat)
grabmouse_low(0);
# endif
# ifdef _WIN32
#ifdef _WIN32
if (backgroundidle)
SetPriorityClass(GetCurrentProcess(), IDLE_PRIORITY_CLASS);
# endif
#endif
break;
case SDL_WINDOWEVENT_MOVED:
if (windowpos)
@ -2251,7 +2260,7 @@ int32_t handleevents(void)
}
break;
// #warning Using SDL 1.3 or 2.X
#else // SDL 1.3+ ^^^ | vvv SDL 1.2
#else // SDL 2.0 ^^^ | vvv SDL 1.2
// #warning Using SDL 1.2
case SDL_KEYDOWN:
case SDL_KEYUP:
@ -2500,7 +2509,7 @@ int32_t handleevents(void)
return rv;
}
#if (SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION < 3) // SDL 1.2
#if SDL_MAJOR_VERSION==1 // SDL 1.2
// from SDL HG, modified
int32_t SDL_WaitEventTimeout(SDL_Event *event, int32_t timeout)
{