On Wed, Mar 25, 2020 at 9:36 PM Mark Hatle
<[email protected]> wrote:
>
> > On Wed, Mar 25, 2020 at 7:15 PM Mark Hatle
> > <[email protected]> wrote:
> >>
> >> Trying to build mesa-gl without X11 enabled, results in numerous errors
> >> about being incorrectly configured, such as:
> >>
> >> ERROR: Problem encountered: building dri drivers require at least one
> >> windowing system or classic osmesa
> >
> > I believe I was fighting similar issue in meta-freescale layer for
> > imx8mm derivative [1], where the status of GPU support was not know at
> > the time. What I did back then is set the default configuration to
> > osmesa and used swrast in order to be able to use mesa on that
> > derivative. After that, when GPU support has been added into Mesa -
> > those modifications were reverted.
>
> Do you have a pointer to that anywhere? I'm curious if any of it might
> still apply.. but I know nothing about mesa and what configurations are
> even possible.
I've included the link to my commit in meta-freescale layer, where the
PACKAGECONFIG is set to use 'classic' OSMesa and adds swrast to
DRIDRIVERS. This should turn the rendering to be performed in the SW,
effectively working for all backends (at the obvious performance
penalty). It took me quite some digging to figure this combination
out, as I also cannot claim myself an expert in mesa...
>
> > I guess turning to swrast in case if someone would decide _not_ to use
> > X11 - is not a bad option here, rather than enforcing the X11 for
> > distros which are using this recipe. Any thoughts?
>
> I don't know any any reasons we couldn't do this.. but like I said.. I'm a
> newbie when it comes to mesa.
Maybe something like this could be used (warning: untested):
PACKAGECONFIG ??= "opengl dri ${@bb.utils.contains('DISTRO_FEATURES',
'x11', 'x11', 'osmesa',d)}"
DRIDRIVERS_append = "${@bb.utils.contains('DISTRO_FEATURES', 'x11',
'', ' swrast',d)}"
>
> --Mark
>
> >>
> >> After consulting with the author of this recipe, it was clear that it
> >> was only intended for the X11 use-case, so requring X11 should avoid the
> >> error message above.
> >>
> >> Signed-off-by: Mark Hatle <[email protected]>
> >> ---
> >> meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb | 6 ++++--
> >> 1 file changed, 4 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb
> >> b/meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb
> >> index d4b1c1c454..5674c6b1fe 100644
> >> --- a/meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb
> >> +++ b/meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb
> >> @@ -6,5 +6,7 @@ PROVIDES = "virtual/libgl virtual/mesa"
> >>
> >> S = "${WORKDIR}/mesa-${PV}"
> >>
> >> -PACKAGECONFIG ??= "opengl dri ${@bb.utils.filter('DISTRO_FEATURES',
> >> 'x11', d)}"
> >> -PACKAGECONFIG_class-target = "opengl dri
> >> ${@bb.utils.filter('DISTRO_FEATURES', 'x11', d)}"
> >> +REQUIRED_DISTRO_FEATURE = "x11"
> >> +
> >> +PACKAGECONFIG ??= "opengl dri x11"
> >> +PACKAGECONFIG_class-target = "opengl dri x11"
> >> --
> >> 2.17.1
> >>
> >>
> >
> > --
> > Regards,
> > Andrey.
> >
> > [1]:
> > https://github.com/Freescale/meta-freescale/commit/9a2210d9ec707531436dc4b56ce655c0bf50a8a8
> >
> >
>
--
Regards,
Andrey.
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