Default environment properties for the entire scene (post-processing effects, lighting and background settings).
The WorldEnvironment node is used to configure the default Environment for the scene.
The WorldEnvironment allows the user to specify default lighting parameters (e.g. ambient lighting), various post-processing effects (e.g. SSAO, DOF, Tonemapping), and how to draw the background (e.g. solid color, skybox). Usually, these are added in order to improve the realism/color balance of the scene.
The Environment resource used by this WorldEnvironment, defining the default properties.