[+ Dave] We can also ignore gnome-shell in Mesa for now and let the gnome-shell maintainers fix the issue in gnome-shell.
Marek On Tue, Sep 5, 2017 at 7:01 AM, Mario Kleiner <mario.kleiner...@gmail.com> wrote: > Set 'expose_rgb10_configs' false when gnome-shell is the > client. > > Gnome-Shell/Wayland (= Mutter drm/kms wayland backend) > currently can't handle non RGB8 configs. It will treat > any framebuffer as RGBX8 or RGBA8, so if provided with > a RGB10A2 or RGB10X2 framebuffer, the compositors > kms backend will simply pass it to the kernel as RGBX8 > for scanout, resulting in false colors. > > Gnome-Shell/X11 displays 10 bpc drawables correctly without > any color artifacts if X-Screen DefaultDepth 30 is set. > > Both Gnome-Shell Wayland and X11 for some reason seem to > have problems with hit-testing for RGB10 modes, making them > almost unusable: Neither context menus (right mouse click) > on the desktop, nor the icons in the dock, nor any part of > the menu bar at the top, nor any icons on the desktop, > respond to any mouse clicks. The same problem appears for > window decorations (resize, move, close of windows via mouse > impossible). > > The same problem happens when testing with the amdgpu-pro > proprietary OpenGL library in "DefaultDepth 30" mode, and > with the NVidia proprietary driver with depth 30 mode, so > this seems to be a problem inside Gnome-Shell, not in Mesa, > X or Wayland. > > Not exposing RGB10 configs keeps Gnome-Shell usable, and > still allows other X-Clients to do RGB10 rendering if X > "DefaultDepth 30" is selected. > > No such problems happened under Gnome flashback session > (Metacity), or with Compiz based UI's, or under KDE-5 with > or without compositing. > > Signed-off-by: Mario Kleiner <mario.kleiner...@gmail.com> > --- > src/util/drirc | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/src/util/drirc b/src/util/drirc > index 30ac9c8..c3170be 100644 > --- a/src/util/drirc > +++ b/src/util/drirc > @@ -160,6 +160,10 @@ TODO: document the other workarounds. > <option name="glsl_correct_derivatives_after_discard" > value="true"/> > </application> > > + <application name="gnome-shell" executable="gnome-shell"> > + <option name="expose_rgb10_configs" value="false"/> > + </application> > + > <!-- The GL thread whitelist is below, workarounds are above. > Keep it that way. --> > > -- > 2.7.4 > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
