glamor: Introduce a central place for our pixmap format/type handling.
We had various helper functions trying to come up with the internalformat/format/type/render formats for pixmaps, and it's much nicer to just detect what those should be once at startup. This gives us a chance to do the right thing for GLES. It also, notably, fixes our format/type for depth 15 and 16 setup for desktop GL, so that we actually allocate 16bpp (GL_RGB/565) on most drivers instead of 32bpp (GL_RGB/UBYTE). GLES still has regressions over desktop (2 regressions in llvmpipe XTS, many in rendercheck), but I think this is a good baseline. Signed-off-by: Eric Anholt <firstname.lastname@example.org>
glamor-formats in 4 minutes and 34 seconds (queued for 1 second)3 jobs for