Apply config changes edited at runtime (C++)

Development Programming & Scripting C++
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1

So I’ve figured out how to make changes to config files such as DefaultEngine.ini and in this case im making a plugin that depends on some features being enabled in the Project Settings such as CustomDepthStencil.

Using the following code:

URendererSettings* StencilSettings = GetMutableDefault<URendererSettings>();
StencilSettings->CustomDepthStencil = ECustomDepthStencil::EnabledWithStencil;
StencilSettings->SaveConfig();

I can change this value in the config files, however this is not yet applied to the currently-running game. I have to restart the game for these changes to actually take effect.

How can I apply these changes to the game that is currently running, or update them in the version of the config that is currently loaded into memory?

2

That config variable is bound to a CVar named “r.CustomDepth”, so you can try the following :

if (IConsoleVariable* CVar = IConsoleManager::Get().FindConsoleVariable(TEXT("r.CustomDepth")))
{
	CVar->Set(ECustomDepthStencil::EnabledWithStencil, EConsoleVariableFlags::ECVF_SetBySystemSettingsIni);
}
3

Worked like a charm, looks like I finally know where at least part of these config variables go in memory!