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GS: Switch SW renderer statistics back to rdtsc 

GetCPUTicks can be pretty low resolution on some systems
This commit is contained in:
TellowKrinkle 2021-09-11 02:10:06 -05:00 committed by Kojin
parent c4e3bd148f
commit 603537719e
4 changed files with 22 additions and 6 deletions
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15
common/emitter/cpudetect.cpp
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@ -18,6 +18,7 @@
#include "common/emitter/cpudetect_internal.h"
#include "common/emitter/internal.h"
#include "common/emitter/x86_intrin.h"
#include <atomic>
// CPU information support
#if defined(_WIN32)
@ -330,3 +331,17 @@ u32 x86capabilities::CalculateMHz() const
else
return (u32)(_CPUSpeedHz(span / 500) / 2000);
}
u32 x86capabilities::CachedMHz()
{
static std::atomic<u32> cached{0};
u32 local = cached.load(std::memory_order_relaxed);
if (unlikely(local == 0))
{
x86capabilities caps;
caps.Identify();
local = caps.CalculateMHz();
cached.store(local, std::memory_order_relaxed);
}
return local;
}

1
common/emitter/tools.h
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@ -116,6 +116,7 @@ public:
void CountCores();
wxString GetTypeName() const;
static u32 CachedMHz();
u32 CalculateMHz() const;
void SIMD_EstablishMXCSRmask();

8
pcsx2/GS/Renderers/Common/GSFunctionMap.h
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@ -19,7 +19,7 @@
#include "GS/GSCodeBuffer.h"
#include "GS/Renderers/SW/GSScanlineEnvironment.h"
#include "common/General.h"
#include "common/emitter/tools.h"
#include <xbyak/xbyak_util.h>
@ -109,9 +109,9 @@ public:
totalTicks += p->ticks;
}
double tick_secs = 1.0 / GetTickFrequency();
double tick_ms = tick_secs * 1000;
double tick_ns = tick_secs * (1000 * 1000 * 1000);
double tick_us = 1.0 / x86capabilities::CachedMHz();
double tick_ms = tick_us / 1000;
double tick_ns = tick_us * 1000;
printf("GS stats\n");

4
pcsx2/GS/Renderers/SW/GSRasterizer.cpp
View File

@ -141,7 +141,7 @@ void GSRasterizer::Draw(GSRasterizerData* data)
m_pixels.total = 0;
m_primcount = 0;
data->start = GetCPUTicks();
data->start = __rdtsc();
m_ds->BeginDraw(data);
@ -247,7 +247,7 @@ void GSRasterizer::Draw(GSRasterizerData* data)
data->pixels = m_pixels.actual;
uint64 ticks = GetCPUTicks() - data->start;
uint64 ticks = __rdtsc() - data->start;
m_pixels.sum += m_pixels.actual;