Environment Light

Light - Ambient illumination based on an environment map

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 PBR Surface Surface Physically-based rendering Read More and Substance PBR Surface Surface PBR renderer defined by .sbsar file Read More renderers, but simpler behavior is also implemented for the legacy Surface Display geometry's triangles as a surface Read More renderer.
By default, this light displays the environment map in the background, similarly to what Skybox A 360 ° background Read More does. This can be disabled thanks to the Render Skybox option.
In order to benfit from High-dynamic-range lighting (HDR), you need to have the compo Pixel Type in an HDR format (either 16 or 32 bits) and to use an environment map encoded using the .hdr format. Such environment map files easily be found on the web under the name HDRI .
You can adjust the intensity of the whole environment with the Exposure parameter.
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. For animated background content you can use a Skybox A 360 ° background Read More

Parameters

  • Render Skybox (On/off option) : Display the environment map as skybox
  • Rasterization Resolution (Number (power of 2)) : Adjust the resolution of the internal pre-convolved maps
  • Exposure (Floating point number) : Adjust the exposure of the map
  • Exposure Offset (Percentage (-100% - 100%)) : Adjust the exposure offset of the map
  • Gamma (Gamma Correction) : Adjust the gamma of the map

Presets


Standard Presets: Dawn 1, Dawn 2, Daylight, Daylight 2, Dusk 1, Nightlight 1, Velvet light and Hansaplatz

See Also: