On Tue, Jan 09, 2018 at 03:28:23PM +0000, Chris Wilson wrote: > Quoting Ville Syrjälä (2018-01-09 15:19:06) > > On Sun, Dec 31, 2017 at 01:03:39AM -0500, Ilia Mirkin wrote: > > > NVIDIA hardware, prior to Kepler, only supports XBGR2101010. However > > > drmAddFB with depth = 30 will use the mapping in > > > drm_mode_legacy_fb_format and pick the XRGB version of the format. > > > > > > One solution is to tell userspace "stop using addfb, move to addfb2". > > > However I'm hoping that there's some sort of semi-clean way of dealing > > > with such driver eccentricities without resorting to changing > > > userspace. > > > > > > Can the ioctl be handled in the driver perhaps? Or would it be > > > reasonable to add a callback in drm_driver? > > > > I don't think there's any sane way to allow the driver to remap these. > > How would generic userspace know which component order the driver > > actually picked? > > With getfb? Wait, I'll get my coat.
debugfs would dump the actual pixel format, at least in 4.16 :-) -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
