Physical Sky - Arnold for Maya
| Further Reading |
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| See Physical Sky in the Arnold User Guide for the full shader documentation. |
This shader implements a variation of the Hosek-Wilkie sky radiance model, including the direct solar radiance function. You can plug it into the environment, or to the color input of a skydome_light (which benefits from efficient importance sampling, sending more rays to bright areas around the sun), or add it directly as an environment shader. Currently, this shader is invisible to GI diffuse and specular rays. To use it as a light source you must attach it to a skydome_light with sufficient resolution to capture the small solar disk.
It is not recommended that you use the physical_sky with the sky shader. You should connect the physical_sky to either the skydome_light or directly to the Environment. Background is deprecated and will be removed in a future release. You should instead connect the physical_sky to the skydome_light.