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Can a Shader Plugin use the Settings Module?

I have a shader plugin, which has to load at the PostConfigInit stage.

During the StartupModule function, if I try to get the Settings module it just drops straight out of the function.

If I check if it's loaded and load it if it isn't, I get the settings interface back. However, then when I try to register the default object of my settings class from within my module I get an assert when it tries to get the DefaultMutableObject for my class. The code looks a bit like this:

 FModuleManager& ModuleManager = FModuleManager::Get();

 ISettingsModule* settingsModule = NULL;

 if (!ModuleManager.IsModuleLoaded("Settings"))
     settingsModule = (ISettingsModule*)ModuleManager.LoadModule("Settings");
     settingsModule = FModuleManager::GetModulePtr<ISettingsModule>("Settings");

 if (settingsModule)
     UObject* default = GetMutableDefault<UMySettings>(); // *** ASSERT HERE ***

     auto settingsSection = settingsModule->RegisterSettings("Project", "Plugins", "MyPlugin",
         LOCTEXT("MyPluginName", "MyPlugin"),
         LOCTEXT("MyPluginDescription", "Configure MyPlugin."),

     // etc 

The error given is:

LogWindows: Error: === Critical error: === LogWindows: Error: LogWindows: Error: Assertion failed: Internal::GObjInitialized [File:D:\Build\++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectBase.cpp] [Line: 171]

In other examples and samples I have found of this, none of them are doing at the PostConfigInit stage. So, I wonder if there's something else that needs to be up and running before the settings system will work?

I suspect I am just doing something daft.

If there's another sensible place I can register this, where would it be?

Thanks & regards, Robert

Product Version: UE 4.18
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asked Mar 01 '18 at 03:45 PM in C++ Programming

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