Physical Sun/Sky

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Physical Sun/Sky

In: 3D View/HDRI Tools

Intermediate

Description

Physical Sun and Sky implementation based on Hosek-Wikie skylight model. Provides an excellent base for an artifical HDRI.

Parameters

• Sun Position:
  range = [0,1]x[0,1] (longitude-latitude angles)
• Turbidity: 1.0 - 10.0
  Turbidity ranges from 1 to 10
• Albedo: 0.0 - 1.0
  Albedo ranges from 0 to 1.
• Ground Color: (Color value)
  Color of the ground plane.
• Exposure (EV): -1.0 - 4.0
  Exposure value of resulting output.
• Sun Size: 0.0 - 4.0
  Scale of the Sun, any value different than 1 is non physically correct. Value has subtle effects!
• Sun Intensity: 0.0 - 1.0
  Intensity of sun disc. Sun disc is fairly small so effect is not immediately visible.
• Sky Intensity: 0.0 - 1.0Intensity of the sky. Also affects flaring of sun in the sky, not the disc itself.

Example Images