<!--
{
  "availability" : [
    "iOS: 15.0.0 -",
    "iPadOS: 15.0.0 -",
    "macCatalyst: 15.0.0 -",
    "macOS: 12.0.0 -",
    "tvOS: 26.0.0 -",
    "visionOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "RealityKit",
  "identifier" : "/documentation/RealityKit/PhysicallyBasedMaterial/emissiveIntensity",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "RealityKit"
    ],
    "preciseIdentifier" : "s:17RealityFoundation23PhysicallyBasedMaterialV17emissiveIntensitySfvp"
  },
  "title" : "emissiveIntensity"
}
-->

# emissiveIntensity

The intensity of light emitted by the entity.

```
var emissiveIntensity: Float { get set }
```

## Discussion

To make a material *emissive* and appear to emit light, set this
property to a value greater than zero and set
[`emissiveColor`](/documentation/RealityKit/PhysicallyBasedMaterial/emissiveColor-swift.property) to a value
other than black. RealityKit multiplies
[`emissiveColor`](/documentation/RealityKit/PhysicallyBasedMaterial/emissiveColor-swift.property) by this value,
so the higher the value, the more intense the entity’s emission of
light.

You can set this property to values greater than `1.0`.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)