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Add a better FPS limiter

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This commit is contained in:
Skyth
2019-08-29 15:43:26 +03:00
parent 3ebf184615
commit 244b6eca25
10 changed files with 32 additions and 107 deletions
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source-code/source/plugins/TLAC/Components/ComponentsManager.cpp
-2
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@@ -12,7 +12,6 @@
#include "CameraController.h"
#include "DebugComponent.h"
#include "ScaleComponent.h"
#include "FPSLimiter.h"
#include "GameTargets/TargetInspector.h"
using ConfigFile = TLAC::FileSystem::ConfigFile;
@@ -42,7 +41,6 @@ namespace TLAC::Components
new FrameRateManager(),
new FastLoader(),
new ScaleComponent(),
new FPSLimiter(),
new StageManager(),
new CameraController(),
new DebugComponent(),
source-code/source/plugins/TLAC/Components/FPSLimiter.cpp
-67
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@@ -1,67 +0,0 @@
#include "FPSLimiter.h"
#include <Windows.h>
#include <chrono>
#include <thread>
#include <cmath>
#include <cstdio>
#include <tchar.h>
using dsec = std::chrono::duration<double>;
using seconds = std::chrono::seconds;
// this is pretty much just lybxlpsv's limiter, but removed from GLComponent
namespace TLAC::Components
{
using namespace std::chrono;
static std::chrono::time_point mBeginFrame = system_clock::now();
static std::chrono::time_point prevTimeInSeconds = time_point_cast<seconds>(mBeginFrame);
const LPCTSTR config_file_name = _T(".\\config.ini");
int fpsLimit = GetPrivateProfileIntW(L"graphics", L"fps.limit", 0, config_file_name);
FPSLimiter::FPSLimiter()
{
}
FPSLimiter::~FPSLimiter()
{
}
const char* FPSLimiter::GetDisplayName()
{
return "fps_limiter";
}
void FPSLimiter::Initialize(ComponentsManager* manager)
{
mBeginFrame = std::chrono::system_clock::now();
prevTimeInSeconds = std::chrono::time_point_cast<seconds>(mBeginFrame);
frameCountPerSecond = 0;
if(fpsLimit != 0)
printf("FPSLimiter fpsLimit: %d\n", fpsLimit);
}
// I assume this gets called once per frame... if not this won't work
void FPSLimiter::Update()
{
auto invFpsLimit = round<std::chrono::system_clock::duration>(dsec{ 1. / fpsLimit });
auto mEndFrame = mBeginFrame + invFpsLimit;
auto timeInSeconds = std::chrono::time_point_cast<seconds>(std::chrono::system_clock::now());
++frameCountPerSecond;
if (timeInSeconds > prevTimeInSeconds)
{
//printf("FPSLimiter::Update(): FPS: %d\n", frameCountPerSecond);
frameCountPerSecond = 0;
prevTimeInSeconds = timeInSeconds;
}
// This part keeps the frame rate.
if (fpsLimit > 19) // not sure why lyb used 19 here
std::this_thread::sleep_until(mEndFrame);
mBeginFrame = mEndFrame;
mEndFrame = mBeginFrame + invFpsLimit;
}
}
source-code/source/plugins/TLAC/Components/FPSLimiter.h
-23
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@@ -1,23 +0,0 @@
#pragma once
#include "EmulatorComponent.h"
#include <chrono>
using seconds = std::chrono::seconds;
namespace TLAC::Components
{
class FPSLimiter : public EmulatorComponent
{
public:
FPSLimiter();
~FPSLimiter();
virtual const char* GetDisplayName() override;
virtual void Initialize(ComponentsManager*) override;
virtual void Update() override;
private:
int frameCountPerSecond;
};
}
source-code/source/plugins/TLAC/TLAC.vcxproj
-2
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@@ -177,7 +177,6 @@
<ClInclude Include="Components\DebugComponent.h" />
<ClInclude Include="Components\EmulatorComponent.h" />
<ClInclude Include="Components\FastLoader.h" />
<ClInclude Include="Components\FPSLimiter.h" />
<ClInclude Include="Components\FrameRateManager.h" />
<ClInclude Include="Components\GameState.h" />
<ClInclude Include="Components\GameTargets\HoldState.h" />
@@ -238,7 +237,6 @@
<ClCompile Include="Components\DebugComponent.cpp" />
<ClCompile Include="Components\EmulatorComponent.cpp" />
<ClCompile Include="Components\FastLoader.cpp" />
<ClCompile Include="Components\FPSLimiter.cpp" />
<ClCompile Include="Components\FrameRateManager.cpp" />
<ClCompile Include="Components\GameTargets\TargetInspector.cpp" />
<ClCompile Include="Components\Input\InputEmulator.cpp" />
source-code/source/plugins/TLAC/TLAC.vcxproj.filters
-6
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@@ -177,9 +177,6 @@
<ClInclude Include="Input\Xinput\XinputState.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="Components\FPSLimiter.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="Components\GameTargets\HoldState.h">
<Filter>Header Files</Filter>
</ClInclude>
@@ -326,9 +323,6 @@
<ClCompile Include="Input\Xinput\XinputState.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="Components\FPSLimiter.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="Components\GameTargets\TargetInspector.cpp">
<Filter>Source Files</Filter>
</ClCompile>