yield

Let cpu fans be quiet when UE4 Editor is in front

by

Two methods to solve this,

  • Modify source code,
    D:\ue\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsPlatformApplicationMisc.cpp

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    #include <io.h>
int doesFileExist(const char* filePath)
{
	int result = _access(filePath, 0);
	if (result < 0)
		return 0;
	return 1;
}
 
bool FWindowsPlatformApplicationMisc::IsThisApplicationForeground()
{
	if (doesFileExist("d:/ue/not_focus.txt"))
	{
		return false;
	}
 
	uint32 ForegroundProcess;
	::GetWindowThreadProcessId(GetForegroundWindow(), (::DWORD *)&ForegroundProcess);
	return (ForegroundProcess == GetCurrentProcessId());
}

    If d:\ue\not_focus.txt exists, whether UE4 Editor is active, UE4 will not occupy a cpu kernel thoroughly.

  • In D:\ue\Engine\Config\ConsoleVariables.ini, or in console, type

    1

    t.MaxFPS 5

refer to:
なんとなく日誌