# Materials Depence is based on a PBR *(Physical Based Rendering)* Material concept. Instead of traditional rendering approaches, where artistic values and colors were taken to design a 3D scene, a PBR approach takes more physically correct parameters into account. Especially when it comes to lighting computation, several natural scientific mathematics and rules are used to simulate lighting and materials as realistically as possible. One important aspect of a PBR pipeline is the definition of materials, which is now not only a color or texture, it is more a physical representation of a surface usually called "PBR Material" or "Substance". ![](https://content.gitbook.com/content/SJPsyh5CBOise9BtVNGO/blobs/wd0LcDEAZ4mfVAwFgijW/41254928.png) ![](https://content.gitbook.com/content/SJPsyh5CBOise9BtVNGO/blobs/dvaY9XXvalnkXUbtm4rD/40894503.png) For detailed information about PBR Rendering see:\ \ Create your own PBR Materials:\ Source for ready-to-use high-quality PBR Materials:\ [https://gametextures.com/](https://beta.gametextures.com/) ## Change a Material Type Once an 3D Model is selected, go to the Material Tab in the Settings window, click on Material button. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.depence.com/depence-construction/depence-materials.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.