# LightingSettings.Lightmapper

> Backends available for baking lighting.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public enum LightingSettings.Lightmapper
```

## Fields

| Value                                                                                                          | Description                                                                                                                                                                                                                                          |
| -------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [ProgressiveGPU](/engine/6000.6/script-reference/unityengine/lightingsettings/lightmapper/progressivegpu.md)   | Backend for baking lighting using the GPU. Uses a progressive path tracing algorithm and the OpenCL compute API.                                                                                                                                     |
| [UnityComputeGPU](/engine/6000.6/script-reference/unityengine/lightingsettings/lightmapper/unitycomputegpu.md) | Backend for baking lighting using the GPU via Unity compute shaders. Uses a path tracing algorithm. This baker can utilize hardware accelerated ray tracing. On devices without hardware ray tracing, a compute shader based emulation path is used. |