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title: "V-Ray Mtl Bump"
canonical: "https://documentation.chaos.com/space/VBLD/117638533/V-Ray%20Mtl%20Bump"
format: markdown
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The Bump tab is part of the V-Ray Mtl parameters. Input Sockets You can access these sockets, when you roll out the  Bump  tab of the node. This section describes the input sockets of the node. They can be used to attach external nodes to determine these values. Bump Map  –  Allows a node to be connected as the bump/normal map of the material. Bump Amount  – Allows a float node to determine the bump multiplier. Bump Bump Amount  –   A multiplier for the bump effect. Bump Type  – Allows the user to specify whether a bump map or a normal map effect is added. Bump Map   – Uses a bump map to determine the bump effect of the material. Normal map in tangent space   – Uses a tangent normal map to determine the bump effect on the material. Normal map in object space  – Uses an object space normal map to determine the bump effect on the material. Normal map in screen space   – Uses a screen space normal map to determine the bump effect on the material. Normal map in world space   – Uses a world space normal map to determine the bump effect on the material. From texture bump output   – Uses the texture bump output to determine the bump effect on the material. Explicit normal  –  Sets the normals to adhere to a specific value rather than being dependent on a face. As a result, any changes made to the position of a face do not affect the normals, which remain unchanged.  See previous: V-Ray Mtl Refraction See next: V-Ray Mtl Options