free engine - normal mapping
Any engine that supports user-written shaders can support normal mapping, because the only requirements are accepting T and N normals and a normal map texture; the rest happens in the shader (and, of course, in the normal map generation tools).
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Thanks friends! I was having a wrong idea about how the normal mapping was processed. I read some articles and I think I understand it better now...
So, could I say that the main limitation of a normal mapping shading is the amount of video memory?
So, could I say that the main limitation of a normal mapping shading is the amount of video memory?
well - it depends. the lighting result will be better the bigger the normalmap is - 512*512 seems like a minimum, but otherwise i'd say that normalmapping is more dependent on the gpu and the tools that'll generate good normalmaps
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