---
title: "Bump Mtl"
canonical: "https://documentation.chaos.com/space/VBLD/117638580/Bump%20Mtl"
format: markdown
---
This page provides information about the Bump Material in V-Ray for Blender. Overview The V-Ray Bump Material gives the ability to add bump map and normal map effects when using any material. Connect a material into the V-Ray Bump to add additional bump or normal map functionality. Stacking multiple Bump materials together can create a more complex surface material by allowing the use of several bump and/or normal maps together easily. UI Path:  ||V-Ray Node Editor|| >  Add  >  Material  >  V-Ray Bump Mtl Node Input Sockets This section lists input sockets that are not found in the Parameters tab but only as inputs for the node. Base Material  – Allows the user to select the base material to which the bump/normal effect is added. Bump Tex Color  – Specifies the bump/normal texture node that is used. Parameters Map Type  – Allows the user to specify whether a bump map or a normal map effect is added to the base material. 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.  For more information on each Map Type, see the  Bump and Normal Mapping in V-Ray . Bump Multiplier  – A multiplier for the bump/normal effect. 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 considers the bump maps when rendering shadows produced by objects with the bump material applied to them. When a texture with color corrections is used as a normal map, V-Ray displays a warning for unexpected results.