Bump Mapping refers to a rendering technique where a raster image, or procedural routine is used to represent "bumps" on a surface.
IRender nXt supports three types of Bump Maps.
- Automatic Bump Maps which treat a SketchUp textured material as both a material map and a bump map.
- Standard Bump Maps where one image is used to represent the height of the bumps, and a base color, or another image is used to represent the underlying material.
- Procedural Bump Maps where a mathematical routine is used to generate a bump pattern.
Automatic bump maps
The Auto Bump Map option on the IRender nXt Material Wizard creates a bump map (automatically) from the SketchUp image on a material. The nXtRender Material Editor has a check box to turn Auto Bump on and off.
Here is an
example of a wall with SketchUp's stone material, and two spot light shining on the the material:
(Bump maps have their best effect when there is lighting at an angle to the material, because the bump map 3D effect is more pronounced when there is light shining on the material.)
- See: Automatic Bump Maps
Standard Bump Maps
IRender Plus supports bump mapped materials.
- See: Standard Bump Maps
Procedural Bump Maps
Procedural Bump Maps are a IRender nXt feature which adds 3D texture effect to surfaces.
There are 5 procedural bumps which can be used to give your material (with or without textures) a different appearance.
Each Bump type has parameters to change its size, etc
Creating Bump Maps
IRender includes a feature to create bump maps from geometry in SketchUp models.
See: Creating Bump Maps
For more information on Bump Maps: