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  "title" : "EnvironmentResource.CreateOptions"
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# EnvironmentResource.CreateOptions

A type that controls compression, sampling quality, and cubemap dimensions when creating an environment resource.

```
struct CreateOptions
```

## Overview

The options provide control for balancing memory usage, quality, and processing power
when creating an environment’s lighting data.

## Topics

### Creating the options

[`init(samplingQuality: EnvironmentResource.CreateOptions.SamplingQuality, specularCubeDimension: Int?, compression: EnvironmentResource.Compression)`](/documentation/RealityKit/EnvironmentResource/CreateOptions/init(samplingQuality:specularCubeDimension:compression:))

Creates an environment creation options structure.

### Specifying the quality

[`enum SamplingQuality`](/documentation/RealityKit/EnvironmentResource/CreateOptions/SamplingQuality-swift.enum)

An object for controlling the skybox sampling quality for lighting textures.

### Accessing the option properties

[`var compression: EnvironmentResource.Compression`](/documentation/RealityKit/EnvironmentResource/CreateOptions/compression)

The compression to apply to environment textures.

[`var samplingQuality: EnvironmentResource.CreateOptions.SamplingQuality`](/documentation/RealityKit/EnvironmentResource/CreateOptions/samplingQuality-swift.property)

The skybox sampling quality for lighting textures.

[`var specularCubeDimension: Int?`](/documentation/RealityKit/EnvironmentResource/CreateOptions/specularCubeDimension)

The dimension of the computed specular cubemap for material reflections.

### Comparing the options

### Creating create options

[`init(skyboxMode: EnvironmentResource.SkyboxMode, samplingQuality: EnvironmentResource.CreateOptions.SamplingQuality, specularCubeDimension: Int?, compression: EnvironmentResource.Compression)`](/documentation/RealityKit/EnvironmentResource/CreateOptions/init(skyboxMode:samplingQuality:specularCubeDimension:compression:))

Creates an environment creation options structure.

### Configuring the skybox

[`var skyboxMode: EnvironmentResource.SkyboxMode`](/documentation/RealityKit/EnvironmentResource/CreateOptions/skyboxMode)

Skybox’s preservation in the environment resource.

## Relationships

### Conforms To

[`Hashable`](/documentation/Swift/Hashable)

[`Equatable`](/documentation/Swift/Equatable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

---

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