This light is based on an environment map and act as if the whole
environment (located at infinite distance) was illuminating the scene.
This light has been specifically conceived to work with the
and Substance PBR Surface
renderers, but simpler behavior
is also implemented for the legacy Surface
By default, this light displays the environment map in the background,
similarly to what Skybox
does. This can be disabled thanks
to the Render Skybox
In order to benfit from High-dynamic-range lighting (HDR), you need to have the
in an HDR format (either 16 or 32 bits) and to use an environment
map encoded using the
format. Such environment map files easily be found on the web
under the name
You can adjust the intensity of the whole environment with the Exposure
The Environment Light is based on an internal pre-processed content map. This pre-calculation is very expensive, but allow a real time rendering after it.
Animating the content inside it is not recommended, if so the pre-processing will need to be done for each frame and you will encounter a big performance issue.