Procedural Sky

The Procedural Sky Volume component override lets you specify the type of sky that HDRP generates. For example, you can set up the sun size, ground color and sky tint.

To use this type of sky, you must first add it to a Volume and set that Volume’s Visual Environment component override’s Sky Type to Procedural Sky. For details on how to do this, see the Visual Environment documentation.

This sky is similar to the procedural sky in Unity’s built-in render pipeline. It differs as it includes extra properties that the built-in render pipeline lacks. HDRP’s Procedural Sky exposes a Multiplier, Update Mode properties, and the option to include the sun in HDRP’s baking process.

Property	Description
Enable Sun Disk	Makes HDRP display the sun disk defined by the Sky Size, Sun Size Convergence, Exposure, and Multiplier .
Sun Size	The size modifier of the sun disk.
Sun Size Convergence	The size convergence of the sun, smaller values make the sun appear larger.
Atmospheric Thickness	The density of the atmosphere, an atmosphere of higher density absorbs more light.
Sky Tint	The color of the sky.
Ground Color	The color of the ground (the area below the horizon).
Exposure	The exposure HDRP applies to the Scene as environmental light. HDRP calculates the environment light in your Scene using 2 to the power of your Exposure value.
Multiplier	The multiplier HDRP applies to the Scene as environmental light. HDRP multiplies the environment light in your Scene by this value.
Update Mode	The rate at which HDRP updates the sky environment (using Ambient and Reflection Probes).
- On Changed	HDRP updates the sky environment when one of its properties change.
- On Demand	HDPR waits for you to manually call for a sky environment update from a script.
- Realtime	HDRP updates 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.