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System: Implement CPU overclocking [SAVEVERSION+]

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Partial credit to @CookiePLMonster as well.
This commit is contained in:
Connor McLaughlin
2020-09-29 23:29:28 +10:00
parent 8f9f039665
commit 27697d0508
19 changed files with 249 additions and 36 deletions
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56
src/core/system.cpp
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@ -68,6 +68,8 @@ static void UpdateRunningGame(const char* path, CDImage* image);
static State s_state = State::Shutdown;
static ConsoleRegion s_region = ConsoleRegion::NTSC_U;
TickCount g_ticks_per_second = MASTER_CLOCK;
static TickCount s_max_slice_ticks = MASTER_CLOCK / 10;
static u32 s_frame_number = 1;
static u32 s_internal_frame_number = 1;
@ -143,6 +145,22 @@ bool IsPALRegion()
return s_region == ConsoleRegion::PAL;
}
TickCount GetMaxSliceTicks()
{
return s_max_slice_ticks;
}
void UpdateOverclock()
{
g_ticks_per_second = ScaleTicksToOverclock(MASTER_CLOCK);
s_max_slice_ticks = ScaleTicksToOverclock(MASTER_CLOCK / 10);
g_spu.CPUClockChanged();
g_cdrom.CPUClockChanged();
g_gpu->CPUClockChanged();
g_timers.CPUClocksChanged();
UpdateThrottlePeriod();
}
u32 GetFrameNumber()
{
return s_frame_number;
@ -682,6 +700,8 @@ bool Boot(const SystemBootParameters& params)
bool Initialize(bool force_software_renderer)
{
g_ticks_per_second = ScaleTicksToOverclock(MASTER_CLOCK);
s_max_slice_ticks = ScaleTicksToOverclock(MASTER_CLOCK / 10);
s_frame_number = 1;
s_internal_frame_number = 1;
@ -725,6 +745,15 @@ bool Initialize(bool force_software_renderer)
g_mdec.Initialize();
g_sio.Initialize();
if (g_settings.cpu_overclock_active)
{
g_host_interface->AddFormattedOSDMessage(
10.0f,
g_host_interface->TranslateString("OSDMessage",
"CPU clock speed is set to %u%% (%u / %u). This may result in instability."),
g_settings.GetCPUOverclockPercent(), g_settings.cpu_overclock_numerator, g_settings.cpu_overclock_denominator);
}
UpdateThrottlePeriod();
return true;
}
@ -845,6 +874,31 @@ bool DoState(StateWrapper& sw)
if (!sw.DoMarker("Events") || !TimingEvents::DoState(sw))
return false;
if (!sw.DoMarker("Overclock"))
return false;
bool cpu_overclock_active = g_settings.cpu_overclock_active;
u32 cpu_overclock_numerator = g_settings.cpu_overclock_numerator;
u32 cpu_overclock_denominator = g_settings.cpu_overclock_denominator;
sw.Do(&cpu_overclock_active);
sw.Do(&cpu_overclock_numerator);
sw.Do(&cpu_overclock_denominator);
if (sw.IsReading() && (cpu_overclock_active != g_settings.cpu_overclock_active ||
(cpu_overclock_active && (g_settings.cpu_overclock_numerator != cpu_overclock_numerator ||
g_settings.cpu_overclock_denominator != cpu_overclock_denominator))))
{
g_host_interface->AddFormattedOSDMessage(
10.0f,
g_host_interface->TranslateString("OSDMessage",
"WARNING: CPU overclock (%u%%) was different in save state (%u%%)."),
g_settings.cpu_overclock_enable ? g_settings.GetCPUOverclockPercent() : 100u,
cpu_overclock_active ?
Settings::CPUOverclockFractionToPercent(cpu_overclock_numerator, cpu_overclock_denominator) :
100u);
UpdateOverclock();
}
return !sw.HasError();
}
@ -1186,7 +1240,7 @@ void UpdatePerformanceCounters()
s_fps = static_cast<float>(s_internal_frame_number - s_last_internal_frame_number) / time;
s_last_internal_frame_number = s_internal_frame_number;
s_speed = static_cast<float>(static_cast<double>(global_tick_counter - s_last_global_tick_counter) /
(static_cast<double>(MASTER_CLOCK) * time)) *
(static_cast<double>(g_ticks_per_second) * time)) *
100.0f;
s_last_global_tick_counter = global_tick_counter;
s_fps_timer.Reset();