# Photorealistic Render

The Photorealistic Render plugin is responsible for handling the PBS (Physically-Based Shading/Rendering). You can find more information about PBS/PBR [here](https://en.wikipedia.org/wiki/Physically_based_rendering). The plugin uses the Ogre v2.1 engine, which is an Open Source Grafics Engine. You can find the source code of the plugin at ..\ApertusVR\plugins\ogre21Render.

![image from PhotorealisticScene Smaple ](https://4044724383-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LEyKyxZqxfQ560k-THK%2F-LnBj9mKsyKtql5JYdOf%2F-LnBwWEIBOUckeBZdWZ4%2Fogre21_sample01.PNG?alt=media\&token=592e4b5b-bd68-4870-bf87-58506b82b5c1)

With this plugin you can easily add any objects to your scene with PBS/PBR materials. These materials are called HLMS materials in Ogre. The basic format is Ogre's .mesh, it is usually have a .material file and even pictures. To build your own object that uses PBS materials you can use the [HLMS Editor](http://wiki.ogre3d.org/HLMS+Editor) that uses Ogre. With the correct settings you can load glTF 2.0 files too.