eff94af794
The main impact is that {upload, draw, upload, draw, ..} doesn't flush
framebuffer caches before every upload.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>