mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
frontend: new sync code
should fix video drift/desync on pandora
This commit is contained in:
notaz
parent
cfae1ae179
commit
b59172e3d4
5 changed files with 77 additions and 94 deletions
|
|
@ -43,7 +43,7 @@ void *g_screen_ptr;
|
|||
int g_screen_width = 320;
|
||||
int g_screen_height = 240;
|
||||
|
||||
char *PicoConfigFile = "config.cfg";
|
||||
const char *PicoConfigFile = "config2.cfg";
|
||||
currentConfig_t currentConfig, defaultConfig;
|
||||
int state_slot = 0;
|
||||
int config_slot = 0, config_slot_current = 0;
|
||||
|
|
@ -1276,31 +1276,26 @@ static void emu_loop_prep(void)
|
|||
filter_old = currentConfig.filter;
|
||||
}
|
||||
|
||||
printf("-- gamma %d\n", currentConfig.gamma);
|
||||
plat_target_gamma_set(currentConfig.gamma, 0);
|
||||
|
||||
pemu_loop_prep();
|
||||
}
|
||||
|
||||
static void skip_frame(int do_audio)
|
||||
{
|
||||
PicoSkipFrame = do_audio ? 1 : 2;
|
||||
PicoFrame();
|
||||
PicoSkipFrame = 0;
|
||||
}
|
||||
|
||||
/* our tick here is 1 us right now */
|
||||
#define ms_to_ticks(x) (unsigned int)(x * 1000)
|
||||
#define get_ticks() plat_get_ticks_us()
|
||||
|
||||
void emu_loop(void)
|
||||
{
|
||||
int pframes_done; /* "period" frames, used for sync */
|
||||
int frames_done, frames_shown; /* actual frames for fps counter */
|
||||
int target_fps, target_frametime;
|
||||
unsigned int timestamp_base = 0, timestamp_fps;
|
||||
int target_frametime_x3;
|
||||
unsigned int timestamp_x3 = 0;
|
||||
unsigned int timestamp_aim_x3 = 0;
|
||||
unsigned int timestamp_fps_x3 = 0;
|
||||
char *notice_msg = NULL;
|
||||
char fpsbuff[24];
|
||||
int i;
|
||||
int fskip_cnt = 0;
|
||||
|
||||
fpsbuff[0] = 0;
|
||||
|
||||
|
|
@ -1315,45 +1310,47 @@ void emu_loop(void)
|
|||
pemu_sound_start();
|
||||
|
||||
/* number of ticks per frame */
|
||||
if (Pico.m.pal) {
|
||||
target_fps = 50;
|
||||
target_frametime = ms_to_ticks(1000) / 50;
|
||||
} else {
|
||||
target_fps = 60;
|
||||
target_frametime = ms_to_ticks(1000) / 60 + 1;
|
||||
}
|
||||
if (Pico.m.pal)
|
||||
target_frametime_x3 = 3 * ms_to_ticks(1000) / 50;
|
||||
else
|
||||
target_frametime_x3 = 3 * ms_to_ticks(1000) / 60;
|
||||
|
||||
timestamp_fps = get_ticks();
|
||||
reset_timing = 1;
|
||||
|
||||
frames_done = frames_shown = pframes_done = 0;
|
||||
|
||||
plat_video_wait_vsync();
|
||||
frames_done = frames_shown = 0;
|
||||
|
||||
/* loop with resync every 1 sec. */
|
||||
while (engineState == PGS_Running)
|
||||
{
|
||||
unsigned int timestamp;
|
||||
int diff, diff_lim;
|
||||
int skip = 0;
|
||||
int diff;
|
||||
|
||||
pprof_start(main);
|
||||
|
||||
timestamp = get_ticks();
|
||||
if (reset_timing) {
|
||||
reset_timing = 0;
|
||||
timestamp_base = timestamp;
|
||||
pframes_done = 0;
|
||||
plat_video_wait_vsync();
|
||||
timestamp_aim_x3 = get_ticks() * 3;
|
||||
timestamp_fps_x3 = timestamp_aim_x3;
|
||||
fskip_cnt = 0;
|
||||
}
|
||||
else if (currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) {
|
||||
timestamp_aim_x3 = get_ticks() * 3;
|
||||
}
|
||||
|
||||
timestamp_x3 = get_ticks() * 3;
|
||||
|
||||
// show notice_msg message?
|
||||
if (notice_msg_time != 0)
|
||||
{
|
||||
static int noticeMsgSum;
|
||||
if (timestamp - ms_to_ticks(notice_msg_time) > ms_to_ticks(STATUS_MSG_TIMEOUT)) {
|
||||
if (timestamp_x3 - ms_to_ticks(notice_msg_time) * 3
|
||||
> ms_to_ticks(STATUS_MSG_TIMEOUT) * 3)
|
||||
{
|
||||
notice_msg_time = 0;
|
||||
plat_status_msg_clear();
|
||||
notice_msg = NULL;
|
||||
} else {
|
||||
}
|
||||
else {
|
||||
int sum = noticeMsg[0] + noticeMsg[1] + noticeMsg[2];
|
||||
if (sum != noticeMsgSum) {
|
||||
plat_status_msg_clear();
|
||||
|
|
@ -1364,7 +1361,7 @@ void emu_loop(void)
|
|||
}
|
||||
|
||||
// second changed?
|
||||
if (timestamp - timestamp_fps >= ms_to_ticks(1000))
|
||||
if (timestamp_x3 - timestamp_fps_x3 >= ms_to_ticks(1000) * 3)
|
||||
{
|
||||
#ifdef BENCHMARK
|
||||
static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
|
||||
|
|
@ -1382,86 +1379,79 @@ void emu_loop(void)
|
|||
sprintf(fpsbuff, "%02i/%02i ", frames_shown, frames_done);
|
||||
#endif
|
||||
frames_shown = frames_done = 0;
|
||||
timestamp_fps += ms_to_ticks(1000);
|
||||
timestamp_fps_x3 += ms_to_ticks(1000) * 3;
|
||||
}
|
||||
#ifdef PFRAMES
|
||||
sprintf(fpsbuff, "%i", Pico.m.frame_count);
|
||||
#endif
|
||||
|
||||
if (timestamp - timestamp_base >= ms_to_ticks(1000))
|
||||
diff = timestamp_aim_x3 - timestamp_x3;
|
||||
|
||||
if (currentConfig.Frameskip >= 0) // frameskip enabled (or 0)
|
||||
{
|
||||
if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && currentConfig.Frameskip >= 0)
|
||||
pframes_done = 0;
|
||||
else
|
||||
pframes_done -= target_fps;
|
||||
if (pframes_done < -2) {
|
||||
/* don't drag more than 2 frames behind */
|
||||
pframes_done = -2;
|
||||
timestamp_base = timestamp - 2 * target_frametime;
|
||||
if (fskip_cnt < currentConfig.Frameskip) {
|
||||
fskip_cnt++;
|
||||
skip = 1;
|
||||
}
|
||||
else
|
||||
timestamp_base += ms_to_ticks(1000);
|
||||
}
|
||||
|
||||
diff = timestamp - timestamp_base;
|
||||
diff_lim = (pframes_done + 1) * target_frametime;
|
||||
|
||||
if (currentConfig.Frameskip >= 0) // frameskip enabled
|
||||
{
|
||||
for (i = 0; i < currentConfig.Frameskip; i++) {
|
||||
emu_update_input();
|
||||
skip_frame(1);
|
||||
pframes_done++; frames_done++;
|
||||
diff_lim += target_frametime;
|
||||
|
||||
if (!(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT))) {
|
||||
timestamp = get_ticks();
|
||||
diff = timestamp - timestamp_base;
|
||||
if (!reset_timing && diff < diff_lim) // we are too fast
|
||||
plat_wait_till_us(timestamp_base + diff_lim);
|
||||
}
|
||||
else {
|
||||
fskip_cnt = 0;
|
||||
}
|
||||
}
|
||||
else if (diff > diff_lim)
|
||||
else if (diff < -target_frametime_x3)
|
||||
{
|
||||
/* no time left for this frame - skip */
|
||||
/* limit auto frameskip to 8 */
|
||||
if (frames_done / 8 <= frames_shown) {
|
||||
emu_update_input();
|
||||
skip_frame(diff < diff_lim + target_frametime * 16);
|
||||
pframes_done++; frames_done++;
|
||||
continue;
|
||||
}
|
||||
if (frames_done / 8 <= frames_shown)
|
||||
skip = 1;
|
||||
}
|
||||
|
||||
// don't go in debt too much
|
||||
while (diff < -target_frametime_x3 * 3) {
|
||||
timestamp_aim_x3 += target_frametime_x3;
|
||||
diff = timestamp_aim_x3 - timestamp_x3;
|
||||
}
|
||||
|
||||
emu_update_input();
|
||||
PicoFrame();
|
||||
pemu_finalize_frame(fpsbuff, notice_msg);
|
||||
if (skip) {
|
||||
int do_audio = diff > -target_frametime_x3 * 2;
|
||||
PicoSkipFrame = do_audio ? 1 : 2;
|
||||
PicoFrame();
|
||||
PicoSkipFrame = 0;
|
||||
}
|
||||
else {
|
||||
PicoFrame();
|
||||
pemu_finalize_frame(fpsbuff, notice_msg);
|
||||
frames_shown++;
|
||||
}
|
||||
frames_done++;
|
||||
timestamp_aim_x3 += target_frametime_x3;
|
||||
|
||||
if (!flip_after_sync)
|
||||
if (!skip && !flip_after_sync)
|
||||
plat_video_flip();
|
||||
|
||||
/* frame limiter */
|
||||
if (!reset_timing && !(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT)))
|
||||
if (!skip && !reset_timing
|
||||
&& !(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT)))
|
||||
{
|
||||
timestamp = get_ticks();
|
||||
diff = timestamp - timestamp_base;
|
||||
unsigned int timestamp = get_ticks();
|
||||
diff = timestamp_aim_x3 - timestamp * 3;
|
||||
|
||||
// sleep or vsync if we are still too fast
|
||||
if (diff < diff_lim)
|
||||
{
|
||||
if (diff > target_frametime_x3 && (currentConfig.EmuOpt & EOPT_VSYNC)) {
|
||||
// we are too fast
|
||||
plat_wait_till_us(timestamp_base + diff_lim - target_frametime / 4);
|
||||
if (currentConfig.EmuOpt & EOPT_VSYNC)
|
||||
plat_video_wait_vsync();
|
||||
plat_video_wait_vsync();
|
||||
timestamp = get_ticks();
|
||||
diff = timestamp * 3 - timestamp_aim_x3;
|
||||
}
|
||||
if (diff > target_frametime_x3) {
|
||||
// still too fast
|
||||
plat_wait_till_us(timestamp + (diff - target_frametime_x3) / 3);
|
||||
}
|
||||
}
|
||||
|
||||
if (flip_after_sync)
|
||||
if (!skip && flip_after_sync)
|
||||
plat_video_flip();
|
||||
|
||||
pframes_done++; frames_done++; frames_shown++;
|
||||
|
||||
pprof_end(main);
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue