[Mesa-dev] very strange intermittent frame-dropping

[Luke Kenneth Casson Leighton]

On Thu, Apr 6, 2017 at 11:36 AM, Eero Tamminen
<eero.t.tamminen at intel.com> wrote:
>>  LIBGL_DEBUG=verbose glxgears
>> libGL: Using DRI2 for screen 0
>>
>> huh.  so i _thought_ it was going to be DRI3.   that's supposed to be
>> the default, isn't it?
>
>
> You need it enabled in Intel DDX build, in X configuration, and Mesa build
> (with building done with suitable deps present).
>
> On normal distros, support should be built in, but not necessarily enabled
> for run-time by default.  In your own builds you need to make sure you
> enable support for DRI3 (= use "--enable-dri3" configure option).

 ok - i'll track it down.  i should be able to get the debian package
mesa-utils (and libraries), check the build configuration, etc.


>>> It would be interesting to know whether there's any correspondence with
>>> the
>>> DRI setting, and what exact Mesa & X versions they have.
>>
>>
>>  looks like i'm on debian 13.0.6-1
>
>
> ???

 sorry - i mean that the mesa version - on debian - is 13.0.6-1.  dpkg
-l | grep mesa:

ii  libgl1-mesa-glx:amd64                     13.0.6-1
            amd64        free implementation of the OpenGL API -- GLX
runtime


> $ cat /etc/debian_version

 an answer to that would be misleading, i run debian/testing on which
i never do an "apt-get dist-upgrade", only pulling in packages
as-needed.

l.