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VRaySphereFadeVolume is a volumetric node used to render just small parts of the scene by putting them in a special spherical locator.VRaySphereFade locators.

The setup requires adding a VRaySphereFadeVolume as In order to use the VRaySphereFade, the user first has to add a VRaySphereFadeVolume in the Environment Shader in the Volumetrics Overrides rollout. Then they can create VRaySphereFade nodes that can be used to specify which  rollout. Then, V-Ray will only render the parts of the scene will be rendered outthat are inside the VRaySphereFade locators.

 

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titleUI Path: ||Hypershade|| > Create panel > VRay section > Volumetric > VRay Sphere Fade Volume
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||V-Ray Shelf|| > Create VRaySphereFadeVolume

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||Hypershade|| > Create panel > VRay section > Volumetric > VRay Sphere Fade Volume    

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||Create menu|| > V-Ray > Create VRaySphereFade

Workflow

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  • [Optional] Start an IPR to see scene updates in real time.
  • Create a VRaySphereFade node from the V-Ray menu > V-Ray Sphere Fade, or from the V-Ray Shelf. This automatically adds a VRaySphereFadeVolume as an environment volume override.
  • Adjust the Sphere Fade locator in the scene. Everything within the locator will be rendered.

 

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When creating a VRaySphereFade node, if nothing is connected to the environment volume override, a VRaySphereFadeVolume will be automatically added there, as it is required for the setup to work. If there already was another volume shader connected, you will need to manually create a VRaySphereFadeVolume and connect it to the environment volume override.

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Sphere Fade Volume Attributes

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Enabled – Tuns the VRaySphereFadeVolume on and off.

Falloff – A radius amount that is used to blend the inside of the VRaySphereFade with the Empty Color. For more information, please see the Relative Falloff example below.

Empty Color – Specifies the color outside the VRaySphereFade. For more information, please see the Empty Color example below.

Affect Alpha – Controls whether or not the alpha channel is affected.

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Example: Relative Falloff

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This example uses a sphere-shape VRaySphereFade locator with a radius of 390 aligned to the Viper fighterthe Shape set to Sphere aligned with the the Viper fighter. We've set the radius to 390 so the locator is large enough to cover our object. This will provide the active area used by VRaySphereFade and has been added as an active object in the VRaySphereFade parameters list. By changing the value of the Falloff the amount of fade can be adjusted. The fade effect takes place from the locator itself inwards, so it must contain what you want to see in your render.

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Example: Empty Color

 

Like the previous examples on this page, this one uses a sphere-shape locator with a VRaySphereFade with the Shape set to Sphere and the radius of 390 aligned to the Viper fighter. This will provide the active area used by VRaySphereFade and has been added as an active object in the VRaySphereFade parameters list. The Empty Color (the area outside of that affected by the VRaySphereFade locator and its falloff) can be changed from a default of mid-gray to any color required.

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VRaySphereFade Empty color set to mid-grey

 

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VRaySphereFade Empty color set to black

 

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VRaySphereFade Empty color set to mid green

 

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Sphere Fade Attributes

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Enabled – – Turns the particular VRaySphereFade object particular VRaySphereFade object on and off.

Radius – Controls the size of the sphereVRaySphereFade.

Shape – Adjusts the primitive dimensions between a Sphere, a Box, or a Cylinder. 

Invert – Inverts the volume that is shaded, rendering the part of the scene that is outside the spherelocator. For more information, please see the Invert example below.

Settings – Specifies the V-Ray sphere fade volume Links to the VRaySphereFadeVolume attached to the current sphere objectlocator.

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Example: Invert

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The Invert option can be turned on used to only show render everything visible in the scene outside of the Sphere fade volumeVRaySphereFade locator. In the examples shown below a Falloff value of 0.1 has been used.

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