# Lines and trails

> How to render lines, trails, and billboards.

> **Important:**
>
> The Built-In Render Pipeline is deprecated and will be made obsolete in a future release.
>
> It remains supported, including bug fixes and maintenance, through the full Unity 6.7 LTS lifecycle.
>
> For more information on migration, refer to [Migrating from the Built-In Render Pipeline to the Universal Render Pipeline](/engine/6000.5/manual/render-pipelines/universal-render-pipeline/introduction/installing-and-configuring-urp/upgrading-from-birp.md.md) and [Render pipeline feature comparison](/engine/6000.5/manual/render-pipelines/choose-a-render-pipeline/feature-comparison.md.md).

Unity uses specialized components to configure and render lines, trails, and billboards.

| **Topic**                                                                                            | **Description**                                                                                                |
| ---------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------- |
| [Drawing lines](/engine/6000.5/manual/visual-effects/lines-trails-billboards/rendering-lines.md)     | Techniques for rendering individual lines in 3D space, and applying materials to those lines.                  |
| [Rendering trails](/engine/6000.5/manual/visual-effects/lines-trails-billboards/rendering-trails.md) | Techniques for rendering trails that appear behind moving GameObjects, and applying materials to those trails. |

## Render pipeline information

How you work with lines and trails depends on the render pipeline you use.

| **Feature name**             | **Universal Render Pipeline (URP)**                             | **High Definition Render Pipeline (HDRP)**                      | **Built-in Render Pipeline** |
| ---------------------------- | --------------------------------------------------------------- | --------------------------------------------------------------- | ---------------------------- |
| **Line Renderer component**  | Yes.                                                            | Yes.                                                            | Yes.                         |
| **Trail Renderer component** | Yes.You can also use VFX Graph to create a custom trail effect. | Yes.You can also use VFX Graph to create a custom trail effect. | Yes.                         |

## Additional resources

* [2D images for low level of detail (LOD)](/engine/6000.5/manual/analysis/graphics-performance-profiling/lod/2d-images-lod.md)