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This page provides information on the Bump Node in V-Ray for Blender.

 

Overview

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Parameters

Image RemovedThe Bump node allows you gives the ability to add bump map or and normal map effects when using any material.

Bump Delta Scale - scale for sampling the bitmap when using bump mapping. The exact value is calculated automatically by V-Ray, but can be scaled here.

Maya Compatible - when enabled V-Ray will render the bump mapping in such a way that it matches the result that can be achieved in Maya.

Bump Shadows - when this option is checked V-Ray will consider the bump maps when rendering shadows produced by objects with the bump material applied to them.

Simply connect a material into the Bump node to add additional bump or normal map functionality. Stacking multiple Bump nodes together can create a more complex surface material by allowing the use of several bump and or normal maps together easily.

 

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© Milo Liao

 

UI Path

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||Node Editor|| > Add > BRDF > Bump


Node

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Bump Texture - (question)

Bump Amount Texture - (question)

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Parameters

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Type - Allows Type - allows the user to specify whether a bump map or a normal map effect will be added to the base material. 

  • Bump -

    • normal

  • Normal bump map.

  • Normal (Tangent) -

    • normal

  • Normal map in tangent space.

  • Normal (Object) -

    • normal

  • Normal map in object space.

  • Normal (Camera) -

    • normal

  • Normal map in camera space.

  • Normal (World) -

    • normal

  • Normal map in world space.

  • From Bump - The map is applied as determined by map type itself.

  • Explicit Normal -


Base Mtl - allows you to select the base material to which the bump/normal effect will be added.

Color Texture - you can use this slot to connect any 8bit texture

Float Texture - you can use this slot to connect a texture in a floating point format

Bump Tex Mult Tex -a multiplier for the strength of the bump/normal effect

Normal Uvwgen - connect a mapping node here.

  •  Applies the map as an explicit normal.

Bump Delta Scale - Scale for sampling the bitmap when using bump mapping. The exact value is calculated automatically by V-Ray, but can be scaled here.

Bump Shadows - When enabled, V-Ray will consider the bump maps when rendering shadows produced by objects with the bump material applied to them.

Compute Bump For Shadow - When enabled, computes bump mapping for shadow rays in case the material is transparent. Otherwise skips bump mapping for shadow rays which improves render times.

Maya Compatible - When enabled V-Ray will render the bump mapping in such a way that it matches the result that can be achieved in Maya.

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Example: Bump Shadows

  

When Bump Shadows are enabled, V-Ray takes into account shadows produced by objects with the bump material applied to them.  In the images below, a checker map is used to bump the tiles for slightly different heights, as well as bumping the lines between the tiles. When Bump Shadows is turned on, the reflection of the train on the reflective floor tiles has been affected.  Whereas when Bump Shadows is not turned on, the bump from the reflective floor tiles plays no part in how the shadows and reflection are rendered.

 

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Bump Shadows turned on. Notice how the reflection and shadows have changed in the reflective floor tiles.

 

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Bump Shadows turned off

 

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