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VideoCommon: Don't round the refresh rate

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We now provide a double to the FPS counter and exact values
to FIFO recording and frame dumping.
This commit is contained in:
JosJuice
2020-07-28 21:01:38 +02:00
parent bf49849f88
commit f72b756778
5 changed files with 31 additions and 15 deletions
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29
Source/Core/Core/HW/VideoInterface.cpp
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@ -60,7 +60,9 @@ static UVIBorderBlankRegister m_BorderHBlank;
// 0xcc002076 - 0xcc00207f is full of 0x00FF: unknown
// 0xcc002080 - 0xcc002100 even more unknown
static u32 s_target_refresh_rate = 0;
static double s_target_refresh_rate = 0;
static u32 s_target_refresh_rate_numerator = 0;
static u32 s_target_refresh_rate_denominator = 1;
static constexpr std::array<u32, 2> s_clock_freqs{{
27000000,
@ -102,14 +104,11 @@ void DoState(PointerWrap& p)
p.Do(m_DTVStatus);
p.Do(m_FBWidth);
p.Do(m_BorderHBlank);
p.Do(s_target_refresh_rate);
p.Do(s_ticks_last_line_start);
p.Do(s_half_line_count);
p.Do(s_half_line_of_next_si_poll);
p.Do(s_even_field_first_hl);
p.Do(s_odd_field_first_hl);
p.Do(s_even_field_last_hl);
p.Do(s_odd_field_last_hl);
UpdateParameters();
}
// Executed after Init, before game boot
@ -698,15 +697,27 @@ void UpdateParameters()
s_even_field_first_hl = equ_hl + m_VBlankTimingEven.PRB + GetHalfLinesPerOddField();
s_even_field_last_hl = s_even_field_first_hl + acv_hl - 1;
s_target_refresh_rate = lround(2.0 * SystemTimers::GetTicksPerSecond() /
(GetTicksPerEvenField() + GetTicksPerOddField()));
s_target_refresh_rate_numerator = SystemTimers::GetTicksPerSecond() * 2;
s_target_refresh_rate_denominator = GetTicksPerEvenField() + GetTicksPerOddField();
s_target_refresh_rate =
static_cast<double>(s_target_refresh_rate_numerator) / s_target_refresh_rate_denominator;
}
u32 GetTargetRefreshRate()
double GetTargetRefreshRate()
{
return s_target_refresh_rate;
}
u32 GetTargetRefreshRateNumerator()
{
return s_target_refresh_rate_numerator;
}
u32 GetTargetRefreshRateDenominator()
{
return s_target_refresh_rate_denominator;
}
u32 GetTicksPerSample()
{
return 2 * SystemTimers::GetTicksPerSecond() / s_clock_freqs[m_Clock];