The Bump and Normal Mapping rollout is part of the VRayMtl parameters.
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Map Type – Uses a bump or normal map to determine the bump effect on the material. See the the Bump and Normal Mapping in V-Ray article to see detailed explanation on each map type and its typical usage.
Bump Map Normal map in tangent space Normal map in object space Normal map in screen space Normal map in world space
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V-Ray GPU supports only Bump Map, Normal map in tangent space, and Normal map in world space map types.
Map – Allows the user to connect a texture for the bump or normal map. Leaving this unconnected turns off bump/normal mapping.
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It is not recommended to use color corrected textures as a normal map. If such a bitmap is used, V-Ray prints a warning for unexpected results.
Bump Mult – A multiplier for the bump map effect.
Bump Delta Scale – This parameter can be decreased to sharpen the bump and increased to blur it. Available only when Map Type is set to Bump Map.
