# Lighting data

> Resources for how Unity stores lighting data and visibility data for lightmapping, Light Probes, and Reflection Probes.

Resources for how Unity stores lighting data and visibility data for lightmapping, Light Probes, and Reflection Probes.

| **Page**                                                                                                                                            | **Description**                                                                                                                              |
| --------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| [Introduction to lighting data](/engine/6000.3/manual/lighting-overview/direct-and-indirect-lighting/lightmap-data/lighting-precomputed-data.md)    | Understand how Unity stores lighting data and visibility data for lightmapping, Light Probes, and Reflection Probes.                         |
| [Lighting Data Assets](/engine/6000.3/manual/lighting-overview/direct-and-indirect-lighting/lightmap-data/lightmap-snapshot.md)                     | Learn about the asset Unity creates to store precomputed lighting data for a scene.                                                          |
| [GI cache](/engine/6000.3/manual/lighting-overview/direct-and-indirect-lighting/lightmap-data/gicache.md)                                           | Learn about the internal data cache Unity uses to store intermediate files when it precomputes lighting data for lightmapping.               |
| [Lightmap data format](/engine/6000.3/manual/lighting-overview/direct-and-indirect-lighting/lightmap-data/lightmaps-technical-information.md)       | Understand how Unity stores light intensity as textures during lightmapping, and learn about support for high dynamic range (HDR) lightmaps. |
| [Light Probe data format](/engine/6000.3/manual/lighting-overview/direct-and-indirect-lighting/lightmap-data/light-probes-technical-information.md) | Understand how Unity stores light as spherical harmonics data in Light Probes.                                                               |