# glsl120.program

`ogre_media/materials/glsl120/glsl120.program` declares the GLSL vertex and fragment programs used to render submap slices, written for the GLSL 120 profile.

```ogre
fragment_program cartographer_ros/glsl120/submap.frag glsl
{
  source submap.frag
}

vertex_program cartographer_ros/glsl120/submap.vert glsl
{
  source submap.vert
}
```

It registers two programs:

- **`cartographer_ros/glsl120/submap.vert`** — the vertex program backed by `submap.vert`.
- **`cartographer_ros/glsl120/submap.frag`** — the fragment program backed by `submap.frag`.

These are the programs referenced by the `cartographer_ros/Submap` material in `ogre_media/materials/scripts/submap.material`.