Normal Mapping in 3D graphics development is the process of using an RGB color-map to create a three-dimensional relief on a two-dimensional plane. The source for the normal map in blender can either be a texture already installed in Blender, or using an external picture-file (.jpg, .jpeg, .bmp, and so on) and loading it as a normal map. - View Tutorial »submitted: 5 years and 3678 days ago
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As an alternative to using the Texture Channels, Blender includes a node-based texture generation system which enables you to create textures by combining colors, patterns and other textures in much the same way that you combine Material Nodes. submitted: 5 years and 3677 days ago