Some more information: CPU usage of the EGL app (glmark2 here) is much higher when this patch is applied, which I presume is what triggers the frame skips.

On 11/19/2014 03:05 PM, Alexandre Courbot wrote:
Hi guys,

I am seeing a severe performance regression (lots frame drops when
running EGL apps in Weston) on Tegra/GK20A since the following commit:

commit 363b53f00069af718f64cf047f19ad5681a8bf6d
Author: Marek Olšák <marek.ol...@amd.com>
Date:   Sat Nov 1 14:31:09 2014 +0100

     egl: remove egl_gallium from the loader

Reverting said commit on top of master brings the expected performance
back. I am not knowledgeable enough about Mesa to speculate about the
reason, but could we try to investigate why this happens and how we
could fix this?

Thanks,
Alex.

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