The Sky's radiance map size. The higher the radiance map size, the more detailed the lighting from the Sky will be. See radiancesize constants for values. Note: You will only benefit from high radiance sizes if you have perfectly sharp reflective surfaces in your project and are not using ReflectionProbes or GIProbes. For most projects, keeping radianceSize to the default value is the best compromise between visuals and performance. Be careful when using high radiance size values as these can cause crashes on low-end GPUs.
Construct a new instance of Sky. Note: use memnew!Sky instead.
The base class for PanoramaSky and ProceduralSky.