bool GraphicsConfigOnMainThread() const;
GraphicsConfigOnMainThread determines whether the configuration should run on Main (window creation) thread or render thread.
If GraphicsConfigMainThread returns true, configuration functions (AdjustViewConfig, InitGraphics, ReconfigureGraphics, ShutdownGraphics) should run on Main (window creation) thread with RenderThread blocked. If not, configuration should run on render thread.
Returns true if configuration runs on the main window creation thread and false if it runs on render thread.