I already know the rough concept of Normal Maps, that in Normal Maps each pixel is representing the direction of a Normal Vector and it changes the lighting to apear so. That Wikipedia article was very interesting. Hence the bottom-left corner of an object is Hence the bottom edge of an object is usuallyĪ normal pointing to bottom left corner of the texture (-1,-1,0) is Hence the left edge of an object is usually light-cyan.Ī normal pointing to bottom of the texture (0,-1,0) is mapped to
Hence the top edge of an object is usually light-green.Ī normal pointing to left of the texture (-1,0,0) is mapped to Hence the right edge of an object is usually light-red.Ī normal pointing to top of the texture (0,1,0) is mapped to
The brightest part of a color map.Ī normal pointing to right of the texture (1,0,0) is mapped to Hence the top-right corner of an object is The most common color in a normal map.Ī normal pointing to top right corner of the texture (1,1,0) is Hence the parts of object directly facing the viewer are I Googled and found Wikiepedia had a pretty good explanation.Ī normal pointing directly towards the viewer (0,0,-1) is mapped to Googling “normal map” will probably give you a wealth of material to read. Is there a general source for such background knowledge? I did some research, but the articles I have found only explained the rough concept of Normal Maps or how to use tools to create and apply Normal Maps. If you have some sources to read, I would appreciate that. My comprehension is, that you must have multiple Normal Vectors in between the low-poly vertices to achieve more detail while keeping the vertex count low. But here is the question: If this is a 1:1 allocation, how can you apply the Normal Map of the high-poly (=much vertices) to the low-poly mesh?.As I know so far through the Custom Mesh article, you can assign one Normal Vector per each Vertex.Normal Maps are used often if you want to have the look of a high-poly model, but bake it onto a low-poly model.Blender does when I apply a Normal Map on a Model. As I want to make my own meshes programmatically, I guess I need to understand what e.g. I have a few questions regarding Normals / Normal Maps.
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