If you want to use a sky in your scene, you can do so by using a HDRI sky texture. PFM already ships with a few different HDRI skies, but you can also find plenty for free online, such as on https://hdri-skies.com/ or https://hdrihaven.com. Custom HDRIs should be extracted to
To use a HDRI sky, all you have to do is add a sky actor to your scene. Click the -button in the actor editor and select
New sky. If the option is not available, you probably already have a sky actor in your scene (only one is allowed).
You can change the sky texture by clicking the
pfm_sky component of the sky actor and changing the
skyTexture property. The choice of HDRI texture can have a significant effect on the lighting conditions in your scene when rendering with one of the raytracing renderers. The lighting influence intensity of the sky is controlled through the
HDRI skies can be used with the Pragma renderer as well, but in this case they currently only work if the map has a skybox.