Rasagar/Library/PackageCache/com.unity.render-pipelines.universal/Documentation~/light-component.md

uid
urp-light-component

Light component reference

Lights determine the shading of an object and the shadows it casts.

This page contains information on Light components in the Universal Render Pipeline (URP). For a general introduction to lighting in Unity and examples of common lighting workflows, refer to the Lighting section of the Unity Manual.

Properties

The Light Inspector includes the following groups of properties:

• General
• Shape
• Emission
• Rendering
• Shadows

General

Property:	Function:
Type	The current type of light. Possible values are Directional, Point, Spot and Area.
Mode	Specify the Light Mode used to determine if and how a light is "baked". Options: Realtime Mixed Baked Note: If Type is set to Area, this property is automatically set to Baked.
Rendering Layers	Set which rendering layers the light applies to. Note: This property is only available if Mode is set to Realtime or Mixed.

Shape

Property:	Function:
Inner/Outer Spot Angle	The inner and outer angles (in degrees) at the base of a spot light’s cone (Spot light only).
Shape	The shape of the area light. Available options: Rectangle Disc
Width	The width of the area light. Note: This property is only available if Shape is set to Rectangle.
Height	The height of the area light. Note: This property is only available if Shape is set to Rectangle.
Radius	The radius of the area light Note: This property is only available if Shape is set to Disc.

Emission

Property:	Function:
Light Appearance	Select the method used to create the color of the light. Available options: Color Filter and Temperature
Color	The color of the emitted light. Set this property with the color slider. Note: This property is only available if Light Apperance is set to Color.
Filter	The color of the tint for the light source. Set this property with the color slider. Note: This property is only available if Light Apperance is set to Filter and Temperature.
Temperature	The temperature (in Kelvin) of the light. Set this property with the slider or enter a specific value. Note: This property is only available if Light Apperance is set to Filter and Temperature.
Intensity	Set the brightness of the light. The default value for a Directional light is 0.5. The default value for a Point, Spot or Area light is 1.
Indirect Multiplier	Use this value to vary the intensity of indirect light. Indirect light is light that has bounced from one object to another. The Indirect Multiplier defines the brightness of bounced light calculated by the global illumination (GI) system. If you set Indirect Multiplier to a value lower than 1, the bounced light becomes dimmer with every bounce. A value higher than 1 makes light brighter with each bounce. This is useful, for example, when a dark surface in shadow (such as the interior of a cave) needs to be brighter in order to make detail visible.
Range	Define how far the light emitted from the center of the object travels (Point and Spot lights only).
Cookie	The RGB texture this Light projects into the scene. Use cookies to create silhouettes or patterned illumination. The texture format to use depends on the type of Light: • Directional: 2D texture • Spot: 2D texture • Point: cubemap texture Note: URP doesn't support light cookies for Area lights. For more information about light cookies, refer to Cookies.
Cookie Size	The per-axis scale Unity applies to the cookie texture. Use this property to set the size of the cookie. Note: This property is available only if you set Type to Directional and assign a texture to Cookie.
Cookie Offset	The per-axis offset Unity applies to the cookie texture. Use this property to move the cookie without moving the light itself. You can also animate this property to scroll the cookie. Note: This property is available only if you set Type to Directional and assign a texture to Cookie.

Rendering

Property:	Function:
Culling Mask	Use this to selectively exclude groups of objects from being affected by the Light. For more information, refer to Layers.

Shadows

Property:	Function:
Shadow Type	Determine whether this Light casts Hard Shadows, Soft Shadows, or no shadows at all. For information on hard and soft shadows, refer to documentation on Lights.
Baked Shadow Angle	If Type is set to Directional and Shadow Type is set to Soft Shadows, this property adds some artificial softening to the edges of shadows and gives them a more natural look. Note: This property is only available if Mode is set to Mixed or Baked.
Baked Shadow Radius	If Type is set to Point or Spot and Shadow Type is set to Soft Shadows, this property adds some artificial softening to the edges of shadows and gives them a more natural look. Note: This property is only available if Mode is set to Mixed or Baked.
Realtime Shadows	These properties are available when Shadow Type is set to Hard Shadows or Soft Shadows. Use these properties to control real-time shadow rendering settings.
Strength	Use the slider to control how dark the shadows cast by this Light are, represented by a value between 0 and 1. This is set to 1 by default.
Bias	Controls whether to use shadow bias settings from the URP Asset, or whether to define custom shadow bias settings for this Light. Possible values are Use Pipeline Settings or Custom.
Depth	Controls the distance at which the shadows will be pushed away from the light. Useful for avoiding false self-shadowing artifacts. This property is visible only when Bias is set to Custom.
Normal	Controls the distance at which the shadow casting surfaces will be shrunk along the surface normal. Useful for avoiding false self-shadowing artifacts. This property is visible only when Bias is set to Custom.
Near Plane	Use the slider to control the value for the near clip plane when rendering shadows, defined as a value between 0.1 and 10. This value is clamped to 0.1 units or 1% of the light’s Range property, whichever is lower. This is set to 0.2 by default.
Soft Shadows Quality	Select the soft shadows quality. With the Use Pipeline Settings option selected Unity uses the value from the URP Asset. Options Low, Medium, and High let you specify the soft shadow quality value for this Light. For more information on the values, refer to the Soft Shadows section.
Custom Shadow Layers	Enable to specify the layer for shadows from the light separately to the layer for the light itself. Note: This property is only available if Mode is set to Mixed or Baked, and Shadow Type is set to Hard Shadows or Soft Shadows.
Layer	The layer for shadows from the light.

Preset

When using Preset of Light Component, only a subset of properties are supported. Unsupported properties are hidden.