[Bug 91656] Pillars of Eternity glitch in maps

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91656

--- Comment #5 from Daniel Scharrer <daniel at constexpr.org> ---
I can reproduce this on my TAHITI - renders fine with llvmpipe though. Bisected
to:

commit c1de7df6d4086070e63369ab0af3950f53a03592
Author: Brian Paul <brianp at vmware.com>
Date:   Mon Jun 22 14:04:09 2015 -0600

    st/mesa: remove unneeded pipe_surface_release() in st_render_texture()

    This caused us to always free the pipe_surface for the renderbuffer.
    The subsequent call to st_update_renderbuffer_surface() would typically
    just recreate it.  Remove the call to pipe_surface_release() and let
    st_update_renderbuffer_surface() take care of freeing the old surface
    if it needs to be replaced (because of change to mipmap level, etc).

    This can save quite a few calls to pipe_context::create_surface() and
    surface_destroy().

    Reviewed-by: Marek Olšák <marek.olsak at amd.com>
    Reviewed-by: Jose Fonseca <jfonseca at vmware.com>

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