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From: Diego <diego.ml@zoho.com>
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Date: Tue, 29 Apr 2014 08:51:30 +0200
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Subject: Re: glmark2 errors
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John Weber wrote:
> The GL benchmark glmark2 throws the following warnings reapeatedly:
> 
> ** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
> ** Failed to set swap interval. Results may be bounded above by refresh
> rate.
> 
> It will eventually segfault during the 'shadow' benchmark.

Hi John,

as I previously reported plain OpenGL is not officially supported by Vivante 
drivers. While hardware supports OpenGL, binary drivers support it only 
unofficially, but there are no headers or explicitly documented support; and I 
think situation will continue to be that way.

See also:
https://bugzilla.yoctoproject.org/show_bug.cgi?id=5098
https://bugzilla.yoctoproject.org/show_bug.cgi?id=6083#c1

Bests,
Diego