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Automatic Frame Delay: More improvements (#17041)

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sonninnos 2024-09-28 00:37:11 +03:00 committed by GitHub
parent 6403605f64
commit ecd626ec5e
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GPG Key ID: B5690EEEBB952194
1 changed files with 19 additions and 13 deletions
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32
gfx/video_driver.c
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@ -4121,6 +4121,7 @@ static void video_frame_delay_leftover(video_driver_state_t *video_st,
uint8_t *skip_update,
uint8_t *video_frame_delay_effective)
{
retro_time_t time_now = cpu_features_get_time_usec();
static retro_time_t time_prev = 0;
retro_time_t core_run_time = (runloop_st->core_run_time) ? runloop_st->core_run_time : 500;
static int16_t frame_time_dev = 0;
@ -4150,8 +4151,8 @@ static void video_frame_delay_leftover(video_driver_state_t *video_st,
overtime_count = 0;
/* Calibration levels */
frame_time = cpu_features_get_time_usec() - time_prev;
time_prev = cpu_features_get_time_usec();
frame_time = (*skip_update) ? frame_time_target : time_now - time_prev;
time_prev = time_now;
frame_time_over = frame_time > frame_time_target * 1.75f || core_run_time >= frame_time_target;
frame_time_near = abs(frame_time - frame_time_target) < frame_time_target * 0.125f;
@ -4160,9 +4161,12 @@ static void video_frame_delay_leftover(video_driver_state_t *video_st,
*skip_update = frame_time_interval;
/* No increasing allowed unless safe */
if (!frame_time_near && frame_delay_cur)
if (!frame_time_near)
hold_count += (frame_time > frame_time_target) ? 2 : 1;
if (frame_time_over)
hold_count += frame_time_interval;
/* Overflow looping */
if (hold_count > refresh_rate * 3)
hold_count = refresh_rate * 2;
@ -4203,19 +4207,13 @@ static void video_frame_delay_leftover(video_driver_state_t *video_st,
if (core_run_time < frame_time_target / 1.5f)
hold_count = refresh_rate * 2;
}
else if (frame_time_over && core_run_time > frame_time_target * 1.5f)
hold_count = refresh_rate;
/* Reserve can't exceed frame time target */
if (video_st->frame_time_reserve > frame_time_target)
video_st->frame_time_reserve = (frame_time_target / 1000) * 1000;
/* New delay */
frame_delay_new = (frame_time_target - MAX(video_st->frame_time_reserve, core_run_time)) / 1000;
/* Limit by target */
if (frame_delay_new > video_st->frame_delay_target)
frame_delay_new = video_st->frame_delay_target;
frame_delay_new = (frame_time_target - core_run_time - video_st->frame_time_reserve) / 1000;
/* Previous frame time excess compensation */
if ( video_st->frame_count > refresh_rate
@ -4224,9 +4222,12 @@ static void video_frame_delay_leftover(video_driver_state_t *video_st,
&& frame_delay_cur
&& frame_delay_new
&& frame_time > frame_time_target
&& (abs(frame_time - frame_time_target) >= 1000)
&& !*skip_update)
{
frame_delay_new = frame_delay_cur - ((frame_time - frame_time_target) / 1000);
int delay_delta = round((frame_time - frame_time_target) / 1000.0f);
*skip_update = frame_time_interval;
frame_delay_new -= delay_delta;
if (frame_delay_new < 0)
frame_delay_new = 0;
}
@ -4272,8 +4273,8 @@ static void video_frame_delay_leftover(video_driver_state_t *video_st,
/* Make sure leftover never goes below reserve */
if ( frame_delay_cur
&& frame_delay_new
&& core_run_time <= video_st->frame_delay_target * 1000
&& frame_time_target - core_run_time - (frame_delay_new * 1000) < video_st->frame_time_reserve)
&& frame_time_target - core_run_time - (frame_delay_new * 1000) < video_st->frame_time_reserve
)
{
frame_delay_new--;
if (frame_delay_cur != frame_delay_new)
@ -4282,9 +4283,14 @@ static void video_frame_delay_leftover(video_driver_state_t *video_st,
/* Decrease hold faster if there is enough leftover */
if ( hold_count
&& !frame_time_over
&& frame_time_target - core_run_time - (frame_delay_new * 1000) > video_st->frame_time_reserve + core_run_time)
hold_count--;
/* Limit by target */
if (frame_delay_new > video_st->frame_delay_target)
frame_delay_new = video_st->frame_delay_target;
/* Reset cumulative frame time deviation count */
if (frame_time_over || frame_delay_new != frame_delay_cur || abs(frame_time_dev) > 1000)
frame_time_dev = 0;