---
title: "Preset Material Library"
canonical: "https://documentation.chaos.com/space/VREVIT/160399758/Preset%20Material%20Library"
format: markdown
---
This section provides a library of all the preset materials available in V-Ray for Revit. Overview Starting with  V-Ray 6 , the V-Ray Preset Material Library is moved to the Chaos Cosmos Browser. Please use the materials from the Chaos Cosmos Browser for any new projects. The Browse Materials in Cosmos button opens all available materials in the Chaos Cosmos Browser. Materials already downloaded with any earlier V-Ray version remain unchanged and can still be loaded as a custom folder at  \Documents\Chaos Cosmos\Packages\Materials . You can also load your own assets into the Library by using the directory button ( ). It adds a new file system location to read the  .vrmat  files. Right-clicking on any material slate from the Preset Material Library gives the option to add it to the project. UI Path and Functionalities From the  materials  menu of the left panel, you can browse all V-Ray assets available for creation and add them to the Revit project. This can be done by drag-and-dropping of the asset into the central panel or by right-click and selecting the option  Add to Scene . You can search the selected category or the whole Library for a certain asset by name. The functionality buttons at the bottom enable reordering of the assets' display. Use the directory button and select the path where your assets reside. They appear automatically in a newly created folder of the asset's tree. Right-click on the folder and use the context menu options to remove or refresh the it. Multi-selection of assets is possible in the Library, but you cannot drag-and-drop more than one asset at a time. Use the  Add to Scene  context menu option to add multiple assets at once. The Asset lists have some additional multi-selection functionalities: Ctrl  on deselected item - Adds to the selection; Ctrl  on selected item - Removes it from the selection; Ctrl + A  - Selects all items in the list/category; Shift + Left-click  - expands the range of the current selection; Click + Drag  - Leaves only the clicked item selected; Right-Click  on deselected item - Shows the context menu for the item, selects the item and deselects all other items; Right-Click  on selected item - Shows the context menu for the item and doesn't change the selection. . vismat  files created with V-Ray 1.49 or earlier versions of V-Ray are no longer supported. You can read a . vismat  file containing materials in V-Ray but you can no longer save an asset in a . vismat  format. Assets can be saved in . vrmat  files only. If you delete (right-click>Delete) an asset from the library, that asset is deleted from the system. If you remove a folder/directory (right-click>Close) from the Asset Library, it is removed only from the assets list and is not deleted from your system Notes The V-Ray Preset Material Library and Light Gen HDRI assets may be inaccessible for direct download to V-Ray 5 users. This can be avoided by upgrading to the latest V-Ray version. Alternatively, the asset files can be acquired manually by downloading the following  archive file  and unpacking it at:  %USERPROFILE%\Documents\ Restarting V-Ray after the asset files are placed will restore functionality to both the Material Library and the Light Gen. Note that a message prompting you to download assets may still appear - press  Continue  to safely disregard it.