What a bump map is:
Bump maps are often described as maps that allow you add intricate details easily to textures, as its name suggests - adding all those little 'bumps' to objects that would otherwise take hours of painstaking modelling.
However, this isn't exactly true. Bump maps actually control the way light is reflected on objects. It simulates detail on objects by artificially redirecting light rays as they would if the geometric deformation existed.
It tweaks or perturbs the normal based on the information in a bump map - usually a greyscale map where lighter colors signify the bump intensity.
However, this isn't exactly true. Bump maps actually control the way light is reflected on objects. It simulates detail on objects by artificially redirecting light rays as they would if the geometric deformation existed.
It tweaks or perturbs the normal based on the information in a bump map - usually a greyscale map where lighter colors signify the bump intensity.
Here are some other online tutorials i have looked at.
How to bump map:
Uses:
To create fine details and highlighted points on a model which improve the realism and aesthetic look of them.
It is a good way to add more detail, dents and hollows without adding more pollys, Adding more detail in a low poly model, Good for games where lots is going on at one time.
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