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Switch to SDL Timer for redraw handler.

This commit is contained in:
Andrew Alderwick 2022-04-09 11:37:51 +01:00
parent a35ef6b242
commit 96f4510a03
1 changed files with 15 additions and 17 deletions
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32
src/uxnemu.c
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@ -88,23 +88,21 @@ stdin_handler(void *p)
(void)p;
}
static int
redraw_handler(void *p)
static Uint32
redraw_handler(Uint32 interval, void *p)
{
int dropped_frames = 0, stop = 0;
SDL_Event event, interrupt;
event.type = redraw_event;
interrupt.type = interrupt_event;
while(!stop) {
SDL_Delay(16);
if(SDL_HasEvent(redraw_event) == SDL_FALSE) {
stop = SDL_PushEvent(&event) < 0;
dropped_frames = 0;
} else if(++dropped_frames == TIMEOUT_FRAMES) {
stop = SDL_PushEvent(&interrupt) < 0;
}
static int dropped_frames = 0;
static unsigned int bump_interval = 0;
SDL_Event event;
if(SDL_HasEvent(redraw_event) == SDL_FALSE) {
event.type = redraw_event;
dropped_frames = 0;
} else if(++dropped_frames == TIMEOUT_FRAMES) {
event.type = interrupt_event;
}
return 0;
SDL_PushEvent(&event);
return 16 + (bump_interval++ % 3 == 0);
(void)interval;
(void)p;
}
@ -160,7 +158,7 @@ init(void)
as.callback = audio_callback;
as.samples = 512;
as.userdata = NULL;
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_JOYSTICK) < 0)
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_JOYSTICK | SDL_INIT_TIMER) < 0)
return error("sdl", SDL_GetError());
gWindow = SDL_CreateWindow("Uxn", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, (WIDTH + PAD * 2) * zoom, (HEIGHT + PAD * 2) * zoom, SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI);
if(gWindow == NULL)
@ -179,7 +177,7 @@ init(void)
redraw_event = SDL_RegisterEvents(1);
interrupt_event = SDL_RegisterEvents(1);
SDL_DetachThread(SDL_CreateThread(stdin_handler, "stdin", NULL));
SDL_DetachThread(SDL_CreateThread(redraw_handler, "redraw", NULL));
SDL_AddTimer(16, redraw_handler, NULL);
SDL_StartTextInput();
SDL_ShowCursor(SDL_DISABLE);
SDL_EventState(SDL_DROPFILE, SDL_ENABLE);