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title: "V-Ray Material Bump"
canonical: "https://documentation.chaos.com/space/VRAYHOUDINI/113280178/V-Ray%20Material%20Bump"
format: markdown
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The Bump tab is part of the V-Ray Material parameters. Parameters Amount  – A multiplier for the bump map effect. Bump Type  – Determines how the  Bump Map  parameter is interpreted. Bump  – Applies the map as a bump map. Normal (Tangent)  – Applies the map as a normal map in tangent space. Normal (Object)  – Applies the map as a normal map in object space. Normal (Camera)  – Applies the map as a normal map in screen/camera space. Normal (World)  – Applies the map as a normal map in world space. Explicit Normal  – Applies the map as an explicit normal. Bump Delta Scale  – A scale for sampling the bitmap when the  Bump Type  is  Bump . Normally, the Bump Delta Scale is tied to the ray differentials and is calculated automatically, but it can be changed if necessary. Resolution-independent Bump  – When enabled, the bump effect is not affected by the rendering resolution and the distance of the object from the camera. By default, the bump effect is recalculated based on the object’s size in pixels. This option disables that, allowing a more realistic zoom-out or zoom-in animation to take place, for instance.  Previous: V-Ray Material Diffuse Next: V-Ray Material Reflection