# Test and debug materials in different lighting conditions (Look Dev)

Look Dev is an image-based lighting tool that you can use to test how your Assets look in various lighting conditions.

For more information, see [the SRP Core documentation.](https://docs.unity3d.com/Packages/com.unity.render-pipelines.core@latest/index.html?subfolder=/manual/Look-Dev.html)

![](Images/HDRPFeatures-LookDev.png)