[Bug 73528] Deferred lighting in Second Life causes system hiccups and screen flickering

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73528

--- Comment #20 from MirceaKitsune <sonichedgehog_hyperblast00 at yahoo.com> ---
It is done. After nearly two hours of bisecting, I managed to track the exact
commit which adds the freezes... at least in the case of Second Life.

edbbfac6cfc634e697d7f981155a5072c52d77ac is the first bad commit
commit edbbfac6cfc634e697d7f981155a5072c52d77ac
Author: Grigori Goronzy <greg at chown.ath.cx>
Date:   Wed Sep 11 01:41:40 2013 +0200

    r600g: fast color clears for single-sample buffers

    Allocate a CMASK on demand and use it to fast clear single-sample
    colorbuffers. Both FBOs and window system colorbuffers are fast
    cleared. Expand as needed when colorbuffers are mapped or displayed
    on screen.

    v2: cosmetics, move transfer expansion into dma_blit

    Signed-off-by: Marek Olšák <marek.olsak at amd.com>

:040000 040000 dbb6df4e7ed243043e46afc9b91c389b61549ef9
62ae46bd2049b7cb6e35e2dce2ba4725b413bdbe M      src

56d9a397aa2dbee6b12e1bbe56be39f426e1e34d is the last good commit

These are the changes in the bad commit: http://pastebin.com/raw.php?i=Z1RAGRcT

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