No way to have different wrap modes for U and V when generating mipmaps

Only single wrap mode can be passed to mipmap generation. Some textures repeat in one direction but not in the other. In order to correctly generate mipmaps for such images, it is necessary to have dedicated wrap modes for U and V.

The issue names no files or tests. Start by locating the mipmap-generation API and its current single wrap-mode parameter; determine how wrap modes are applied during generation. Done means U and V can be configured independently and textures repeating in only one direction generate correct mipmaps, with coverage in the relevant tests.

Written by the indexing model from the issue text.