Tutorial: Bake Normal Maps From Meshes

Blenders default render engine, “Blender Render” or “Blender Internal” as it’s often called, includes a dedicated sub-system that can be used to generate various types of image map, typically of an object in of itself (direct or self-referencing), or by translating the details of one to another (indirect or inferred referencing). This latter approach is most often used to create Normal maps, a process whereby the detail of a high-resolution model is rendered down, or “Baked”, to an image UV mapped to a low resolution version of the same mesh.

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