Gradient Sky

The Gradient Sky Volume component override controls settings relevant to rendering a simple representation of the sky. It allows you to define three colors, the Top, Middle, and Bottom, which HDRP interpolates between to create a gradient sky.

You can alter these values at run time. This component also exposes options that enable you to define how HDRP updates the indirect lighting the sky generates in the Scene.

Using Gradient Sky

Gradient Sky uses the Volume framework, so to enable and modify Gradient Sky properties, you must add a Gradient Sky override to a Volume in your Scene. To add Gradient Sky to a Volume:

  1. Select the Volume component in the Scene or Hierarchy to view it in the Inspector.
  2. In the Inspector, navigate to Add Override > Sky and click on Gradient Sky.

After you add a Gradient Sky override, you must set the Volume to use Gradient Sky. The Visual Environment override controls which type of sky the Volume uses. In the Visual Environment override, navigate to the Sky section and set the Type to Gradient Sky. HDRP now renders a Gradient Sky for any Camera this Volume affects.

Properties

Property Description
Top Sets the color of the upper hemisphere of the sky.
Middle Sets the color at the horizon.
Bottom Sets the color of the lower hemisphere of the sky. This is below the horizon.
Gradient Diffusion The size of the Middle property in the Skybox. Higher values make the gradient thinner, shrinking the size of the Middle section. Low values make the gradient thicker, increasing the size of the Middle section.
Update Mode Controls the rate at which HDRP updates the sky environment (using Ambient and Reflection Probes).
• On Changed: Makes HDRP update the sky environment when one of the sky properties changes.
• On Demand: Makes HDRP wait until you manually call for a sky environment update from a script.
• Realtime: Makes HDRP update the sky environment at regular intervals defined by the Update Period.
- Update Period The period (in seconds) at which HDRP updates the sky environment when you set the Update Mode to Realtime. Set the value to 0 if you want HDRP to update the sky environment every frame.