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Normal map resolution

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What should dimensions of height/normal map normally be? The same that those of diffuse map or what? Thank you

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No rule of thumb for that. I think that it depends much on the visual appereance of the normal mapped object. Of course you should also consider the texture memory usage and the importance/size of the model in the 3d scene.

There is no need for 1:1 size ratio between diffuse map and normal map.

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I have heard normal maps should be at least the same res as diffuse, and ideally actually double the diffuse height/width is ideal


just what I have heard


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