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Interactive -  – Toggles between interactive and production rendering. Features such as Light cache and on-demand mipmapping are not supported in interactive mode.

Lock Render Camera/View – When enabled, locks the render camera from Render from Camera/View.

Render from Camera/View – Specifies the view to render from when the V-Ray render button is clicked.

(plus) NEW -Viewport Renderer Settings

(plus) NEW - Enable Viewport rendering – Toggles the render to be outputed in Unreal's viewport or in the VFB. Unreal's tone mapper post process effects and post process materials will be applied to the rendered image in the viewport.

(plus) NEW - Min samples per pixel – Minimum number of path per pixels to be reached before displaying the current render output.

(plus) NEW - Min renders pass –Minimum number of passes to be reached before displaying the current render output.

(plus) NEW - Max update time – maximum period of time before the current render output is displayed. This may be used to force image update if the number of samples or number of renders pass takes too long to get up to a predefined threshold.

Lock Image Aspect – When enabled, locks the X value and scales the Y according to the viewport size.

Resolution – Sets the output resolution for rendering.

Export VRScene – Enables the export of a .vrscene file when the V-Ray render button is clicked.

Export VRScene Path – Directory where the .vrscene file is saved with the file name output.vrscene. Default directory is <Unreal_install_path>\UE_4.XX\Engine\Plugins\VRayForUnreal\Content

Compress – Compresses geometric information when Export VRScene is enabled, thus making the resulting .vrscene file is smaller.

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Denoiser – A render element that progressively applies a denoising operation to the image. The denoising operation detects areas where noise is present and smooths them out. (plus) NEW - Will be applied to the image if Enable Viewport Rendering is On.

None – No render element will be generated.

V-Ray Denoiser – V-Ray's denoising algorithm.

NVIDIA AI Denoiser – V-Ray's integration of NVIDIA's AI-based denoising algorithm. The NVIDIA AI denoiser requires an NVIDIA GPU to work.

(plus) NEW - Post Effect Update Frequency –Sets the frequency at which the denoiser and/or lens effects will be calculated and applied.

(plus) NEW - As often as possible; Moderate; Balanced; On render completed

VRay Render Elements

Beauty – The Beauty Render Elements are the primary render elements that form V-Ray's pre-composited final render Beauty (RGB_Color).

Filters – Shows only the selected set of channels in the render, disregarding any backgrounds, textures, etc.

Masks – Provides a variety of Render Elements to be used as masks in the compositing process.

Coordinates – The Coordinates Render Elements are based on the scene geometry, but serve different purposes.

Light Select – Stores direct lighting information from user-selected lights in the scene; can also be limited to the light's raw, diffuse, or specular contribution.

Utilities –This group of Render Elements can be used for troubleshooting purposes.

Custom – You can add any of the render channels again from the Custom option, allowing you to use it with a different setup.

For more information on the V-Ray Render Elements, see the Render Elements page.

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