# PostProcessing ### new PostProcessing( renderer : Renderer, outputNode : Node. ) Constructs a new post processing management module. **renderer** A reference to the renderer. **outputNode** An optional output node. **Deprecated:** since r183. Use [RenderPipeline](RenderPipeline.html) instead. PostProcessing has been renamed to RenderPipeline. This class is a wrapper for backward compatibility and will be removed in a future version. ## Source [src/renderers/common/PostProcessing.js](https://github.com/mrdoob/three.js/blob/master/src/renderers/common/PostProcessing.js)