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rsx: Improve VBLANK accuracy

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Eladash 2021-06-26 08:54:57 +03:00 committed by Ivan
parent 571bdfc828
commit dcb2e8cd9e
1 changed files with 11 additions and 8 deletions
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19
rpcs3/Emu/RSX/RSXThread.cpp
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@ -629,12 +629,13 @@ namespace rsx
// TODO: exit condition // TODO: exit condition
while (!is_stopped()) while (!is_stopped())
{ {
const u64 current = get_system_time();
const u64 period_time = 1000000 / g_cfg.video.vblank_rate; const u64 period_time = 1000000 / g_cfg.video.vblank_rate;
const u64 wait_sleep = period_time - u64{period_time >= host_min_quantum} * host_min_quantum; const u64 wait_for = period_time - std::min<u64>(current - start_time, period_time);
const u64 wait_sleep = wait_for - u64{wait_for >= host_min_quantum} * host_min_quantum;
if (get_system_time() - start_time >= period_time) if (!wait_for)
{ {
do
{ {
start_time += period_time; start_time += period_time;
vblank_count++; vblank_count++;
@ -658,10 +659,14 @@ namespace rsx
sys_rsx_context_attribute(0x55555555, 0xFED, 1, 0, 0, 0); sys_rsx_context_attribute(0x55555555, 0xFED, 1, 0, 0, 0);
} }
} }
while (get_system_time() - start_time >= period_time); }
else if (wait_sleep)
{
thread_ctrl::wait_for(wait_sleep); thread_ctrl::wait_for(wait_sleep);
continue; }
else if (wait_for >= host_min_quantum / 3 * 2)
{
std::this_thread::yield();
} }
if (Emu.IsPaused()) if (Emu.IsPaused())
@ -677,8 +682,6 @@ namespace rsx
// Restore difference // Restore difference
start_time = get_system_time() - start_time; start_time = get_system_time() - start_time;
} }
thread_ctrl::wait_for(100);
} }
}); });