void UGameEngine::ConditionallyOverrideSettings(int32& ResolutionX, int32& ResolutionY, EWindowMode::Type& WindowMode)
{
if (FParse::Param(FCommandLine::Get(),TEXT("Windowed")) || FParse::Param(FCommandLine::Get(), TEXT("SimMobile")))
{
// -Windowed or -SimMobile
WindowMode = EWindowMode::Windowed;
}
else if (FParse::Param(FCommandLine::Get(),TEXT("FullScreen")))
{
// -FullScreen
auto CVar = IConsoleManager::Get().FindTConsoleVariableDataInt(TEXT("r.FullScreenMode"));
check(CVar);
WindowMode = CVar->GetValueOnGameThread() == 0 ? EWindowMode::Fullscreen : EWindowMode::WindowedFullscreen;
}
//fullscreen is always supported, but don't allow windowed mode on platforms that dont' support it.
WindowMode = (!FPlatformProperties::SupportsWindowedMode() && (WindowMode == EWindowMode::Windowed || WindowMode == EWindowMode::WindowedMirror || WindowMode == EWindowMode::WindowedFullscreen)) ? EWindowMode::Fullscreen : WindowMode;
FParse::Value(FCommandLine::Get(), TEXT("ResX="), ResolutionX);
FParse::Value(FCommandLine::Get(), TEXT("ResY="), ResolutionY);
if (!IsRunningDedicatedServer() && ((ResolutionX <= 0) || (ResolutionY <= 0)))
{
// consume available desktop area
FDisplayMetrics DisplayMetrics;
FDisplayMetrics::GetDisplayMetrics( DisplayMetrics );
ResolutionX = DisplayMetrics.PrimaryDisplayWidth;
ResolutionY = DisplayMetrics.PrimaryDisplayHeight;
// If we're in windowed mode, attempt to choose a suitable starting resolution that is smaller than the desktop, with a matching aspect ratio
if (WindowMode == EWindowMode::Windowed)
{
TArray<FIntPoint> WindowedResolutions;
GenerateConvenientWindowedResolutions(DisplayMetrics, WindowedResolutions);
if (WindowedResolutions.Num() > 0)
{
// We'll default to the largest one we have
ResolutionX = WindowedResolutions[WindowedResolutions.Num() - 1].X;
ResolutionY = WindowedResolutions[WindowedResolutions.Num() - 1].Y;
// Attempt to find the largest one with the same aspect ratio
float DisplayAspect = (float)DisplayMetrics.PrimaryDisplayWidth / (float)DisplayMetrics.PrimaryDisplayHeight;
for (int32 i = WindowedResolutions.Num() - 1; i >= 0; --i)
{
float Aspect = (float)WindowedResolutions[i].X / (float)WindowedResolutions[i].Y;
if (FMath::Abs(Aspect - DisplayAspect) < KINDA_SMALL_NUMBER)
{
ResolutionX = WindowedResolutions[i].X;
ResolutionY = WindowedResolutions[i].Y;
break;
}
}
}
}
}
// Check the platform to see if we should override the user settings.
if (FPlatformProperties::HasFixedResolution())
{
// Always use the device's actual resolution that has been setup earlier
FDisplayMetrics DisplayMetrics;
FDisplayMetrics::GetDisplayMetrics( DisplayMetrics );
// We need to pass the resolution back out to GameUserSettings, or it will just override it again
ResolutionX = DisplayMetrics.PrimaryDisplayWorkAreaRect.Right - DisplayMetrics.PrimaryDisplayWorkAreaRect.Left;
ResolutionY = DisplayMetrics.PrimaryDisplayWorkAreaRect.Bottom - DisplayMetrics.PrimaryDisplayWorkAreaRect.Top;
FSystemResolution::RequestResolutionChange(ResolutionX, ResolutionY, EWindowMode::Fullscreen);
}
if (FParse::Param(FCommandLine::Get(),TEXT("Portrait")))
{
Swap(ResolutionX, ResolutionY);
}
}
void UGameEngine::ConditionallyOverrideSettings( int32& ResolutionX, int32& ResolutionY, bool& bIsFullscreen )
{
if (FParse::Param(FCommandLine::Get(),TEXT("Windowed")) || FParse::Param(FCommandLine::Get(), TEXT("SimMobile")))
{
// -Windowed or -SimMobile
bIsFullscreen = false;
}
else if (FParse::Param(FCommandLine::Get(),TEXT("FullScreen")))
{
// -FullScreen
bIsFullscreen = true;
}
//fullscreen is always supported, but don't allow windowed mode on platforms that dont' support it.
bIsFullscreen = bIsFullscreen ? bIsFullscreen : !FPlatformProperties::SupportsWindowedMode();
FParse::Value(FCommandLine::Get(), TEXT("ResX="), ResolutionX);
FParse::Value(FCommandLine::Get(), TEXT("ResY="), ResolutionY);
if (!IsRunningDedicatedServer() && ((ResolutionX <= 0) || (ResolutionY <= 0)))
{
// consume available desktop area
FDisplayMetrics DisplayMetrics;
FSlateApplication::Get().GetDisplayMetrics( DisplayMetrics );
ResolutionX = DisplayMetrics.PrimaryDisplayWidth;
ResolutionY = DisplayMetrics.PrimaryDisplayHeight;
// If we're in windowed mode, attempt to choose a suitable starting resolution that is smaller than the desktop, with a matching aspect ratio
if (!bIsFullscreen)
{
TArray<FIntPoint> WindowedResolutions;
GenerateConvenientWindowedResolutions(DisplayMetrics, WindowedResolutions);
if (WindowedResolutions.Num() > 0)
{
// We'll default to the largest one we have
ResolutionX = WindowedResolutions[WindowedResolutions.Num() - 1].X;
ResolutionY = WindowedResolutions[WindowedResolutions.Num() - 1].Y;
// Attempt to find the largest one with the same aspect ratio
float DisplayAspect = (float)DisplayMetrics.PrimaryDisplayWidth / (float)DisplayMetrics.PrimaryDisplayHeight;
for (int32 i = WindowedResolutions.Num() - 1; i >= 0; --i)
{
float Aspect = (float)WindowedResolutions[i].X / (float)WindowedResolutions[i].Y;
if (FMath::Abs(Aspect - DisplayAspect) < KINDA_SMALL_NUMBER)
{
ResolutionX = WindowedResolutions[i].X;
ResolutionY = WindowedResolutions[i].Y;
break;
}
}
}
}
}
#if PLATFORM_ANDROID || PLATFORM_IOS
{
// Always use the device's actual resolution that has been setup earlier
FDisplayMetrics DisplayMetrics;
FSlateApplication::Get().GetDisplayMetrics( DisplayMetrics );
// We need to pass the resolution back out to GameUserSettings, or it will just override it again
ResolutionX = DisplayMetrics.PrimaryDisplayWorkAreaRect.Right - DisplayMetrics.PrimaryDisplayWorkAreaRect.Left;
ResolutionY = DisplayMetrics.PrimaryDisplayWorkAreaRect.Bottom - DisplayMetrics.PrimaryDisplayWorkAreaRect.Top;
FSystemResolution::RequestResolutionChange(ResolutionX, ResolutionY, true);
}
#endif
if (FParse::Param(FCommandLine::Get(),TEXT("Portrait")))
{
Swap(ResolutionX, ResolutionY);
}
}
