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This page gives information about the Chaos Cosmos Browser in Houdini/Solaris.


Overview

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Chaos Cosmos Content System delivers a 3D content library of high-quality 3D content selected from the rich V-Ray Chaos ecosystem. It allows V-Ray users, from their respective V-Ray products, you to browse, place, and render 3D assets in their your projects. The asset categories span across Furniture, Accessories, People, Vegetation, Vehicles, HDRIs, and more. In addition, the assets work seamlessly in the different Chaos renderers (V-Ray, V-Ray GPU, Vantage, Corona, Vision, and VisionEnvision) and host apps (Houdini, 3ds Max, Cinema 4D, Maya, Blender, Revit, Rhino, and Sketchup).Chaos Cosmos Browser is part of the installation of V-Ray and does not require any other specific actions. You can access the downloadable content of the Chaos Cosmos Platform from within the host platform after the V-Ray installation is completed.

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Chaos Cosmos is now supported in Houdini under Mac OS, starting with Houdini version 20.0.506. Cosmos Mac OS support for the ARM architecture is planned for the future but currently not available.

UI Path:

||V-Ray menu|| > Import > Cosmos Browser

||V-Ray Shelf|| > Cosmos
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The latest version of Chaos Cosmos Browser is supported on macOS 10.14 and newer; earlier versions of macOS support Chaos Cosmos Browser 2023.07.10.

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<iframe width="560" height="315" src="https://www.youtube.com/embed/ZlspiGDS66s" title="V-Ray 6 for Houdini — Bring your environments to life with Chaos Cosmos" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>


Installation

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Chaos Cosmos Browser is part of the installation of V-Ray and does not require any other specific actions. You can access the downloadable content of the Chaos Cosmos Platform from within Houdini after the V-Ray installation is completed.

For more information on installing V-Ray, see the Installation page.


Usage

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To start using the Chaos Cosmos content, please follow the steps below:

1. Click theCosmos button from the V-Ray Shelf to open the Chaos Cosmos Browser. Alternatively, go to V-Ray menu > Import > Cosmos Browser.

2. Click the Sign in button. Then enter your Chaos credentials.

3. Use the menu or the Search tab to find assets. You can additionally choose between different Categories.

An option to show  the Downloaded assets only is also available.

The filters help you refine your search by date, popularity, color, and space.

4. Use the Image Added button to enable the Multi-Selection Mode. In this mode, you can select several assets to download, update or delete at once.

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Currently the Multi-Selection Mode cannot be used for importing multiple assets.


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Once you choose an asset, you have to download it. Hover over it and click the Download Image Removed Image Added button.

Another way to download an asset is to click on it. This reveals additional information. You can see the category/space/color of the asset and other additional information. Other connected assets can be filtered by clicking on any of the additional information parameters. Click the Download button to download the asset.

All downloaded assets are marked with Image Removed Image Added symbol. They are available in the Downloaded category.

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Any Cosmos asset can be marked as your favorite through the Like Image Removed Image Added button. Favorite assets are marked with Image Removed Image Added symbol and are available in the Likes category.

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Import Assets

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Once the download is complete, a pop-up window will state that the asset is downloaded successfully. Use the Import Image Removed Import Image Added button to bring the asset into the host platform. The button places the asset at 0,0,0 of the coordinates system.

Note that downloaded assets can be reused across different host platforms. They are saved locally at the following directory:

For Windows: C:\Users\[User]\Documents\Chaos Cosmos\Packages

For macOS: /Users/[User]/ChaosCosmos/

For Linux: /home/linuxqa[User]/.ChaosCosmos/Packages

  The download storage can be configured. For more information on how to do it, refer to the Configuring the Asset Download Directory page.

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Assets: Note that the Cosmos geometry is imported as V-Ray Proxy. You can refer to the V-Ray Proxy page for additional information. Any material in the scene can be used to override the shader and allows for quick customizations of the scene. You can find the newest assets in the Recently added section of the Cosmos browser.

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HDRI: The HDRI assets create a Dome Light with the hdri file attached to it. It is recommended to use VRayPhysicalCamera when using Cosmos hdri files for lighting. Alternatively, you can lower the dome light intensity.

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Chaos Scans: Starting with V-Ray 7, the Materials section also contains Chaos Scans materials which are marked by the Chaos Scans (Image Added) marker. Imported Chaos Scans materials require a separate Chaos Scans plugin license in order to be modified. They do not require a separate license to be downloaded and rendered.


Assets with Variants

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Some assets have more than one variant. Assets with variants combine different versions of the same asset into a single item in the library.

1. Assets with variants have an indicator displaying the total number of its variants. 

2. To display the asset variants, hover over the asset. The variants show as small thumbnails and you can preview them by hovering over the thumbnail.

Note that you have to download and then import each individual variant if you want to have them all in your scene.

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Update Assets

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Cosmos assets get updated over time. When an update is available, an update label appears. You can download the new versions from within the Chaos Cosmos Browser. Click on the labeled asset to open a popup window and click the Download now update text in the bottom.

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Enmesh Support

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The Enmesh-Pattern category includes Enmesh patterns that can be applied to the geometry in the scene.

When an Enmesh asset is imported, a pattern is created in the obj network. Inside the pattern node, a mesh object can be created to receive the pattern.

If an object is already selected, the mesh is applied directly to the selection.

The imported pattern can be edited as a V-Ray Enmesh node of the underlying geometry.

For more information on Enmesh, see the How to Add V-Ray Enmesh tutorial.

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V-Ray Enmesh is not supported in Solaris.


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V-Ray Cosmos Downloader

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If you open a scene that contains Chaos Cosmos assets which are no longer present on the local machine, you can download them from the V-Ray Cosmos Downloader. The downloader is accessible from the V-Ray menu > Cosmos Downloader.


Example

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This example shows a scene without Cosmos assets and the same scene using Chaos Cosmos assets.

 

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