Texture Reduction MAX MIP Mapping

Question: Does the new EXT_texture_filter_minmax implement a modified MIP mapping generation or just a texture lookop.

My experiments suggest the latter, I would like a confirmation on that.

Best Regards

The image data is left untouched, it’s only the texture lookup method that changes as suggested by the spec.

Thank you for clarifying. The generation would have been much more usefull though.