This page provides information on the Corona Bump Converter Map, its settings, and usage.
Overview
By default, 3ds Max treats bump maps differently than "regular" RGB maps, so some maps do not work correctly as inputs to bump mapping. The Corona Bump Converter resolves this, allowing you to use any map as an input to the bump map channel in a shader.
It also lets you use the 3ds Max native Output settings to apply adjustments to your bump map and get the results you would expect, which is not possible in case of plugging a map directly into a material's bump slot.
Corona Bump Converter relies on UVW mapping, so if an object does not use UVW maps, or if they are incorrect, it may produce artifacts, or may not work at all.
Settings
Input – Allows to load a bump map.
Strength – Provides easy access to Bump Map Strength without having to modify it in the Maps section of the material.
Blurring – Changes the radius from which the bump is computed, which controls how much the map is visually blurred. Note that high values (of 3 or above) may cause 'ghosting' in the result.
Example
Object with noise map used as a bump map. Default settings. No Bump Converter was used.
Object with noise map used as bump map. No Bump Converter used. The output parameters of the noise map have been updated, however the rendered image looks exactly the same as with the default settings.
Object with noise map used as bump map. Bump Converter used. The output parameters of the noise map have been updated, and this is correctly reflected in the rendered image.
