Just of curiosity: Is there any benefit of the "big normals" approach at blurred
reflections over the "micronormals" approach?

After all, the micronormals approach has the benefit of working in a single pass
if antialiasing or focal blur is used, and as it seems it's also better suited
to be mixed with standard bump mapping (let alone that it is the more "natural"
approach at blurred reflections) - so what does the "big normals" approach offer
to make up for this?

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