Called by the PluginHost whenever a resource for a specific pin needs to be destroyed on a specific device. This is also called when the plugin is destroyed, so don't dispose dxresources in the plugins destructor/Dispose()

Called by the PluginHost everytime a texture is accessed via a pin on the plugin. This is called from the PluginHost from within DirectX BeginScene/EndScene, therefore the plugin shouldn't be doing much here other than handing back the right texture.

Called by the PluginHost every frame for every device. Therefore a plugin should only do device specific operations here and still keep node specific calculations in the Evaluate call.