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UI Current Theme – Changes the Color Theme of the V-Ray Asset Editor, Export V-Ray Proxy, V-Ray Progress Window, V-Ray Color Picker, V-Ray File Path Editor, About Chaos V-Ray, V-Ray Light Gen, and Export V-Ray Scene. You can choose between a Dark (default) theme, a Bright theme theme, or Chaos Black theme. See the images on the right.

Sliders Color Space – Controls the color space of all Color Picker sliders. Color Picker slider inputs can work with both Rendering (RGB) and Screen (sRGB) values. Selecting the preferred color space affects all color sliders at once.

Rendering (RGB) – The default mode. The color values that are displayed match the color values that V-Ray uses for internal calculations (and the values listed in a .vrscene). This means that if a 0.5 in value, gray color is selected, it appears bright when rendered and viewed in sRGB space. On the other hand, if two colors are blended with a Mix (Map) texture using the same 0.5 mix color, the result is exactly 50% color blend. This mode is useful when blending materials or textures with exact color values. It also allows for specifying exact (might be measured) material albedo, reflection, or transmission.
Screen (sRGB) – The color values that are displayed match the color in the rendered image viewed in sRGB space (the VFB default behavior). This means that if a color is set with exact R G B values, rendered, and then picked from the image the values match.

GPU Preview Devices – Selects the devices used for the GPU preview. Note that the selected option is preserved between sessions.

Delete Confirmation – Enables a confirmation dialog on every asset deletion or purge.

Update Notifications – Automatically checks for software updates and enables pop-up notifications. Keep this option enabled to get notified every time a new V-Ray version becomes available.

Properties Level – Sets a default level of expertise for newly created assets. This option does not affect pre-existing assets.

Basic – Allows configuration of the essential settings only.
Advanced – Allows configuration of all available settings.

Apply to Existing – Applies the default level of expertise to all existing scene assets.

Send anonymous usage statistics to Chaos Group – Allows you to participate in the improvement decisions for the future versions of V-Ray by automatically sending anonymous usage statistics to Chaos Group. Note that no personally identifiable information is collected.