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(uxnemu.c) Cache audio values before POKE2

This commit is contained in:
neauoire 2023-08-30 12:12:30 -07:00
parent 3b526bbed6
commit cfd29ac511
1 changed files with 12 additions and 4 deletions
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16
src/uxnemu.c
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@ -69,10 +69,15 @@ clamp(int v, int min, int max)
static Uint8
audio_dei(int instance, Uint8 *d, Uint8 port)
{
Uint8 *addr;
Uint16 vu;
if(!audio_id) return d[port];
switch(port) {
case 0x4: return audio_get_vu(instance);
case 0x2: POKE2(d + 0x2, audio_get_position(instance)); /* fall through */
case 0x2:
addr = d + 2;
vu = audio_get_position(instance);
POKE2(addr, vu); /* fall through */
default: return d[port];
}
}
@ -353,8 +358,10 @@ handle_events(Uxn *u)
SDL_free(event.drop.file);
}
/* Audio */
else if(event.type >= audio0_event && event.type < audio0_event + POLYPHONY)
uxn_eval(u, PEEK2(&u->dev[0x30 + 0x10 * (event.type - audio0_event)]));
else if(event.type >= audio0_event && event.type < audio0_event + POLYPHONY) {
Uint8 *addr = &u->dev[0x30 + 0x10 * (event.type - audio0_event)];
uxn_eval(u, PEEK2(addr));
}
/* Mouse */
else if(event.type == SDL_MOUSEMOTION)
mouse_pos(u, &u->dev[0x90], clamp(event.motion.x - PAD, 0, uxn_screen.width - 1), clamp(event.motion.y - PAD, 0, uxn_screen.height - 1));
@ -446,6 +453,7 @@ emu_run(Uxn *u, char *rom)
{
Uint64 next_refresh = 0;
Uint64 frame_interval = SDL_GetPerformanceFrequency() / 60;
Uint8 *vector_addr = &u->dev[0x20];
window_created = 1;
emu_window = SDL_CreateWindow(rom, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, (uxn_screen.width + PAD2) * zoom, (uxn_screen.height + PAD2) * zoom, SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI);
if(emu_window == NULL)
@ -464,7 +472,7 @@ emu_run(Uxn *u, char *rom)
exec_deadline = now + deadline_interval;
if(!handle_events(u))
return 0;
screen_vector = PEEK2(&u->dev[0x20]);
screen_vector = PEEK2(vector_addr);
if(now >= next_refresh) {
now = SDL_GetPerformanceCounter();
next_refresh = now + frame_interval;