mirror of https://git.sr.ht/~rabbits/uxn
Switch back to single thread for handling redraws.
This reverts commit a283264df2 while
keeping the enhancements made later on (detection of overlong
execution).
This change fixes compatibility for learn-uxn and current npe.
This commit is contained in:
Andrew Alderwick
parent
cabccd61fc
commit
04352a8c89
79
src/uxnemu.c
79
src/uxnemu.c
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@ -36,7 +36,8 @@ WITH REGARD TO THIS SOFTWARE.
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#define WIDTH 64 * 8
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#define HEIGHT 40 * 8
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#define PAD 4
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#define TIMEOUT_FRAMES 20
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#define TIMEOUT_MS 334
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#define BENCH 0
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static SDL_Window *gWindow;
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static SDL_Texture *gTexture;
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@ -49,7 +50,8 @@ static SDL_Thread *stdin_thread;
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static Device *devscreen, *devmouse, *devctrl, *devaudio0;
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static Uint8 zoom = 1;
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static Uint32 stdin_event, audio0_event, redraw_event, interrupt_event;
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static Uint32 stdin_event, audio0_event;
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static Uint64 exec_deadline, deadline_interval, ms_interval;
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static int
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error(char *msg, const char *err)
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@ -93,26 +95,6 @@ stdin_handler(void *p)
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(void)p;
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}
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static int
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redraw_handler(void *p)
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{
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int dropped_frames = 0, stop = 0;
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SDL_Event event, interrupt;
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event.type = redraw_event;
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interrupt.type = interrupt_event;
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while(!stop) {
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SDL_Delay(16);
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if(SDL_HasEvent(redraw_event) == SDL_FALSE) {
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stop = SDL_PushEvent(&event) < 0;
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dropped_frames = 0;
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} else if(++dropped_frames == TIMEOUT_FRAMES) {
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stop = SDL_PushEvent(&interrupt) < 0;
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}
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}
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return 0;
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(void)p;
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}
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static void
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set_window_size(SDL_Window *window, int w, int h)
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{
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@ -181,13 +163,12 @@ init(void)
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error("sdl_joystick", SDL_GetError());
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stdin_event = SDL_RegisterEvents(1);
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audio0_event = SDL_RegisterEvents(POLYPHONY);
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redraw_event = SDL_RegisterEvents(1);
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interrupt_event = SDL_RegisterEvents(1);
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SDL_DetachThread(stdin_thread = SDL_CreateThread(stdin_handler, "stdin", NULL));
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SDL_DetachThread(SDL_CreateThread(redraw_handler, "redraw", NULL));
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SDL_StartTextInput();
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SDL_ShowCursor(SDL_DISABLE);
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SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
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ms_interval = SDL_GetPerformanceFrequency() / 1000;
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deadline_interval = ms_interval * TIMEOUT_MS;
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return 1;
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}
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@ -290,6 +271,7 @@ start(Uxn *u, char *rom)
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/* unused */ uxn_port(u, 0xd, nil_dei, nil_deo);
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/* unused */ uxn_port(u, 0xe, nil_dei, nil_deo);
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/* unused */ uxn_port(u, 0xf, nil_dei, nil_deo);
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exec_deadline = SDL_GetPerformanceCounter() + deadline_interval;
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if(!uxn_eval(u, PAGE_PROGRAM))
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return error("Boot", "Failed to start rom.");
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return 1;
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@ -392,15 +374,10 @@ console_input(Uxn *u, char c)
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}
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static int
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run(Uxn *u)
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handle_events(Uxn *u)
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{
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SDL_Event event;
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Device *devsys = &u->dev[0];
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redraw();
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while(SDL_WaitEvent(&event)) {
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/* .System/halt */
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if(devsys->dat[0xf])
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return error("Run", "Ended.");
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while(SDL_PollEvent(&event)) {
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/* Window */
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if(event.type == SDL_QUIT)
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return error("Run", "Quit.");
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@ -439,13 +416,8 @@ run(Uxn *u)
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else
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do_shortcut(u, &event);
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ksym = event.key.keysym.sym;
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while(SDL_PeepEvents(&event, 1, SDL_PEEKEVENT, redraw_event, redraw_event) == 0) {
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SDL_Delay(4);
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SDL_PumpEvents();
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}
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if(SDL_PeepEvents(&event, 1, SDL_PEEKEVENT, SDL_KEYUP, SDL_KEYUP) == 1 && ksym == event.key.keysym.sym) {
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SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_KEYUP, SDL_KEYUP);
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SDL_PushEvent(&event);
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return 1;
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}
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} else if(event.type == SDL_KEYUP)
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controller_up(devctrl, get_button(&event));
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@ -462,11 +434,30 @@ run(Uxn *u)
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/* Console */
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else if(event.type == stdin_event)
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console_input(u, event.cbutton.button);
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/* .Screen/vector and redraw */
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else if(event.type == redraw_event) {
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uxn_eval(u, GETVECTOR(devscreen));
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if(uxn_screen.fg.changed || uxn_screen.bg.changed)
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redraw();
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}
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return 1;
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}
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static int
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run(Uxn *u)
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{
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Device *devsys = &u->dev[0];
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Uint64 now = SDL_GetPerformanceCounter(), frame_end, frame_interval = SDL_GetPerformanceFrequency() / 60;
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for(;;) {
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/* .System/halt */
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if(devsys->dat[0xf])
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return error("Run", "Ended.");
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frame_end = now + frame_interval;
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exec_deadline = now + deadline_interval;
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if(!handle_events(u))
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return 0;
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uxn_eval(u, GETVECTOR(devscreen));
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if(uxn_screen.fg.changed || uxn_screen.bg.changed)
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redraw();
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now = SDL_GetPerformanceCounter();
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if(!BENCH && ((Sint64)(frame_end - now)) > 0) {
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SDL_Delay((frame_end - now) / ms_interval);
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now = frame_end;
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}
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}
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return error("SDL_WaitEvent", SDL_GetError());
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@ -475,7 +466,7 @@ run(Uxn *u)
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int
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uxn_interrupt(void)
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{
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return SDL_PeepEvents(NULL, 1, SDL_GETEVENT, interrupt_event, interrupt_event) < 1;
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return ((Sint64)(exec_deadline - SDL_GetPerformanceCounter())) > 0;
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}
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int
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