[Bf-committers] Multisample issue on Linux/X11/GLX

Campbell Barton ideasman42 at gmail.com
Thu Nov 13 12:06:00 CET 2014


Hi Cédric, could you check if this patch resolves the problem?

https://developer.blender.org/D894

On Wed, Nov 12, 2014 at 9:45 PM, Sergey Sharybin <sergey.vfx at gmail.com> wrote:
> Thanks a good catch!
>
> And actually, seems Campbell saw this email before me and was trying to fix
> it.
>
> On Wed, Nov 12, 2014 at 6:06 PM, Cédric PAILLE <cedricpaille at gmail.com>
> wrote:
>
>> Found !
>>
>> In GHOST_WindowX11.cpp, XCreateWindow(...) didn''t get the good XVisual
>> (I've made one with glXChooseVisual(...), like in GHOST_ContextGLX.cpp) and
>> it works.
>>
>>
>> 2014-11-12 17:16 GMT+01:00 Cédric PAILLE <cedricpaille at gmail.com>:
>>
>> > Hi,
>> >
>> > I've no message in the terminal about multisample, but after some
>> > researches, it seems that it's broken since GHOST has been re-factored
>> > recently. I've an old version of Blender (2.69) that works correctly. I'm
>> > trying to fix it, but it doesn't seem obvious...
>> >
>> > Cheers
>> >
>> > 2014-11-12 16:14 GMT+01:00 Sergey Sharybin <sergey.vfx at gmail.com>:
>> >
>> >> This is a video driver feature, which might be disabled by nvidia on
>> some
>> >> platforms (assuming you're using nvidia driver).
>> >>
>> >> Also, are there any messages regarding multisample in the console?
>> >>
>> >> P.S. There was a demo application in qt, which might be the fastest way
>> to
>> >> figure out if the issue is in blender itself or in video driver/X11/etc.
>> >>
>> >> On Wed, Nov 12, 2014 at 12:02 PM, Cédric PAILLE <cedricpaille at gmail.com
>> >
>> >> wrote:
>> >>
>> >> > Hi,
>> >> >
>> >> > I've spent a long time trying to resolve a problem with the 3D
>> >> viewport's
>> >> > multisample. I just can't get it to work on a CentOS 6.5 from sources
>> >> (It's
>> >> > working if I download the binaries from the Blender's website).
>> >> > I've tried compiling with the latest GLEW library, with the internal
>> >> GLEW,
>> >> > with GHOST_SDL compilation flag, and it's always the same, multisample
>> >> just
>> >> > doesn't work. If I ask openGL for samples (using *glGetIntegerv*
>> >> > (GL_SAMPLES,
>> >> > samples) ) it always returns 0.
>> >> >
>> >> > Does anyone have an idea on how to debug this problem ?
>> >> >
>> >> > System : CentOS 6.5, Nvidia Quadro K2000 with latest drivers.
>> >> >
>> >> > --
>> >> > Cédric PAILLE.
>> >> > _______________________________________________
>> >> > Bf-committers mailing list
>> >> > Bf-committers at blender.org
>> >> > http://lists.blender.org/mailman/listinfo/bf-committers
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> With best regards, Sergey Sharybin
>> >> _______________________________________________
>> >> Bf-committers mailing list
>> >> Bf-committers at blender.org
>> >> http://lists.blender.org/mailman/listinfo/bf-committers
>> >>
>> >
>> >
>> >
>> > --
>> > Cédric PAILLE.
>> >
>>
>>
>>
>> --
>> Cédric PAILLE.
>> _______________________________________________
>> Bf-committers mailing list
>> Bf-committers at blender.org
>> http://lists.blender.org/mailman/listinfo/bf-committers
>>
>
>
>
> --
> With best regards, Sergey Sharybin
> _______________________________________________
> Bf-committers mailing list
> Bf-committers at blender.org
> http://lists.blender.org/mailman/listinfo/bf-committers



-- 
- Campbell


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