This is done with a sequence of blits, from level 0 -> level 1, then
level 1 -> level 2, etc. st/mesa has a helper which will call the
gallium driver's blit method with the appropriate parameters.
Internally, assuming there's nothing too funky going on, we'll use the
2d blit logic (class 0x902d).
Hi guys again. A homebrew developer (homebrew is custom software made for
the switch using openGL under nouveau) reported to me that 'glGenerateMipmap'
wasn't working on yuzu (Nintendo Switch emulator). I looked into it and I
noticed all the triangle data used by nouveau to render the mipmaps was
