The Global To Output node takes in a reference to a global value or global reference and returns the data contained in that component reference.
Outputs
* (Generic)
The value that was stored in a global value or global reference component.
Globals
Global (Generic)
The component that is referenced.
Examples
To make this work, you need the following things:
Using primary on either global areas of the nodes will automatically make a GlobalValue/GlobalReference component. These can be accessed currently through the inspector only. Once opened in the inspector, if there are any GlobalToOutput nodes that automatically made GlobalValue/GlobalReference components on them, those can be removed in favor of any components made prior (either on WriteToGlobal nodes or on other slots that has those components)
The last step is to reference GlobalValue/GlobalReference component in the WriteToGlobal node (or from some other slot) to the field in the GlobalToOutput node. Then call the write node and notice the value change.
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ProtoFlux Global Example.