For Maya software renderer only. 
	 
To create a plug-in multipixel filter
- The 
		  Plug-in Filter Weight attribute is connected with the plug-in filter node and its value will be used as the filter weight. The filter does not have to be normalized. 
		  You can define a plug-in DG node with at least two input attributes and one output attribute with a float type. The input attributes require the short name X and Y. The output attribute has to be connected to the 
			 Plug In Filter Weight attribute in the 
			 renderQuality node. 
		   When the plug-in filter type is selected, the plug-in node is evaluated multiple times with different x and y weights, ranging in [-1..1]. The plug-in filter should be defined in the normalized domain [-1..1,-1..1]. The filter width change only affects the mapping of the normalized filter to the pixel coverage. 
		   
To load a plug-in multipixel filter
- The following assumes you have already created a multipixel filter plug-in. 
		
- Copy the filter plug-in .so (Linux), or .mll (Windows), or .lib (Mac OS X) file to: 
		  - Linux: /maya/bin/plug-ins 
			 
- Windows: drive:\Program Files\Autodesk\Maya<version>\bin\plug-ins 
			 
- Mac OS X: /Applications/Maya<version>/Application Support/plug-ins or to a directory where the 
				Plug-in Manager can read them 
			 
 
- In Maya, click 
		  Window > Settings/Preferences > Plug-in Manager. 
		
- Load the plug-in you created. 
		
Connect a plug-in multipixel filter
 
		 
		To connect a plug-in multipixel filter to the 
		  Plug-In Filter Weight
- In the 
			 Script Editor, create a plug-in node by typing: 
			  
				createNode <yourPluginNodeType> 
				 
			  A node is created for the plug-in. 
			  
- Select the plug-in node by typing in the script editor: 
			  
				select <yourPluginNodeType> 
			  
- With the plug-in node selected, open the 
			 Connection Editor 
			 (Windows > General Editors > Connection Editor). 
		  
- Load the plug-in node to the left side of the 
			 Connection Editor. 
		  
- Repeat steps 1 and 2 to load the defaultRenderQuality or user-created renderQuality node to the right side of the 
			 Connection Editor. 
		  
- Connect the plug-in node’s weight to the defaultRenderQuality 
			 Plug In Filter Weight 
			 attribute. You can use the multipixel filter plug-in.