Panda3D comes with a handy feature that enables you to conveniently define off-screen render buffers that can be used to render scene information into one or more textures. This allows you to redirect rendering output to intermediate textures that can be used as a base for exciting visuals. Filtering and recombining the previously generated texture data then create the end results of these image-based special effects. This recipe will show you how to use this feature, as it is the basis for any image based rendering effect you are going to build using this engine.
Set up your project folder as in Setting up the game structure found in Chapter 1. Add a directory called shaders at the same level as the src and models directories. Make sure these directories are in Panda3D's asset search path.