http://bugs.freedesktop.org/show_bug.cgi?id=25109





--- Comment #3 from Tom <tstel...@gmail.com>  2009-11-19 21:24:36 PST ---
I tried to run git bisect to find the cause of this bug, but I couldn't find
the exact commit because some of the commits caused Wine to crash.  However, I
still think I have some useful information.  Here are my results:

Civilization 4 running on top of Wine works as expected until this commit:

d1a0ece9077b3de49c293a04c220b995424cef28 is first bad commit
commit d1a0ece9077b3de49c293a04c220b995424cef28
Author: Pauli Nieminen <suok...@gmail.com>
Date:   Wed Aug 12 20:28:54 2009 +0300

    radeon: Port flush preventation code from r200 to r100.

    - emit prediction
    - fixes to emit_sizes for data
    - clean up of excesive use of radeonEnsureCmdBufferSpace

    Signed-off-by: Pauli Nieminen <suok...@gmail.com>

:040000 040000 f5047ec4056835fd217922cabb4907bf59dd5e31
d4c7e96406e9a9529073e104b18e2af16ef9b01a M      src

Starting with this commit, Wine crashes right after starting Civilization 4. 
This behavior continues until this commit:

4916a5a2e72b05c176809dd0db5066a966a45b80 is first bad commit
commit 4916a5a2e72b05c176809dd0db5066a966a45b80
Author: Maciej Cencora <m.cenc...@gmail.com>
Date:   Sun Sep 20 13:54:59 2009 +0200

    radeon: update buffer map/unmap code for changes introduced in
92033a9516942d7272ce4bf36ecd422009bbaf60 and
822c7964819ca1fcc270880d4ca8b3de8a4276d0

:040000 040000 7f8f99ed6e80c9554b1d4a34030a3720beb7f174
a2673b431fd186ffe0224c0c5783abef43f76e5d M      src

Starting with this commit, I experience the problem I originally described. 
Civilization 4 starts correctly, but during game play all the terrain is black.
The cause of this bug is somewhere between these two commits.


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