The .vrscene file can be loaded from Unreal's Content Browser > Import button or with a drag and drop from Windows Explorer. The V-Ray Scene Import Options window opens. Current vrscene – Shows the vrscene's path that is being imported. VRay Scene Import Settings Create Assets – Enables the creation of static meshes, materials and textures in the Content Browser. Treat Y-axis for Up Vector – Enable this if your vrscene was generated from a software that has its Y-axis set as an up vector (e.g. Maya) Use Full Proxy Mesh – When enabled, proxies will be imported as static meshes. Create Actors – Enables the creation of actors in the level. When disabled, Create Nodes, Create Lights and Create Cameras are also disabled. Create Nodes – Enables the creation of static meshes in the level. Create Lights – Enables the creation of lights in the level. Create Cameras – Enables the creation of cameras in the level. Reimport Behavior Update Existing –When enabled, detects and applies changes to existing assets and actors. Delete Unreferenced Actors –When enabled, detects deleted static mesh nodes from the vrscene and automatically deletes linked actors in the current level. Light Map Options Build Lighting – When enabled, the Build Lighting Only command is executed at the end of the import phase and Unreal begins lightmap baking. Big Resolution – Specifies the maximum number of big resolution (2048) lightmaps that can be set in the level (e.g. multiplier of 1 will result in 2 meshes that will have a lightmap resolution of 2048; multiplier of 2 will result in 4 meshes that have lightmap resolution of 2048). Small Resolution – Specifies the multiplier for the number of low resolution (16) lightmaps that can be set in the level (e.g. multiplier of 0 will set the minimum lightmap resolution of a mesh to 8; multiplier of 1 will set the minimum lightmap resolution of a mesh to 16).
The import process can be automated using python scripting. You can check the Automated .vrscene Import page for more details.
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