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rsx: Fix zcull time to not time travel to the future

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Eladash 2020-04-16 12:54:10 +03:00 committed by Ivan
parent e095eaf16e
commit 833ace1190
1 changed files with 28 additions and 3 deletions
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31
rpcs3/Emu/RSX/RSXThread.cpp
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@ -34,6 +34,8 @@ rsx::frame_capture_data frame_capture;
extern CellGcmOffsetTable offsetTable;
extern thread_local std::string(*g_tls_log_prefix)();
extern u64 sys_time_get_timebase_frequency();
extern u64 get_timebased_time();
namespace rsx
{
@ -811,8 +813,15 @@ namespace rsx
u64 thread::timestamp()
{
// Get timestamp, and convert it from microseconds to nanoseconds
const u64 t = get_guest_system_time() * 1000;
const u64 freq = sys_time_get_timebase_frequency();
auto get_time_ns = [freq]()
{
const u64 t = get_timebased_time();
return (t / freq * 1'000'000'000 + t % freq * 1'000'000'000 / freq);
};
const u64 t = get_time_ns();
if (t != timestamp_ctrl)
{
timestamp_ctrl = t;
@ -820,7 +829,23 @@ namespace rsx
return t;
}
timestamp_subvalue += 10;
// Check if we passed the limit of what fixed increments is legal for
// Wait for the next time value reported if we passed the limit
if ((1'000'000'000 / freq) - timestamp_subvalue <= 2)
{
u64 now = get_time_ns();
for (; t == now; now = get_time_ns())
{
_mm_pause();
}
timestamp_ctrl = now;
timestamp_subvalue = 0;
return now;
}
timestamp_subvalue += 2;
return t + timestamp_subvalue;
}