From the course: Redshift Render Essential Training

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Bump and normal maps

Bump and normal maps

- [Instructor] Bump maps or normal maps can be a great way to add fine detail to a model or 3D object without having to actually model the geometry for it. These maps are basically a way of faking additional detail using a texture to trick the lighting in the scene. Now, it won't actually affect the light, but what it does do is changes the way the surface of the material reacts to that light. It's still a smooth surface, so it doesn't affect the geometry, which means that you won't get additional shadow detail from this, but it does allow you to reduce the amount of geometry you need for further away detail effects. So, first off, we're going to go and talk about bump maps. Now, bump maps are basically a black and white image that pushes or pulls the normal surface towards or away from the light that is being cast on it. So in order to use a bump map, all we need is a black and white image and then an actual bump map node.…

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