https://bugs.freedesktop.org/show_bug.cgi?id=28459

--- Comment #1 from Roland Scheidegger sroland@vmware.com 2010-06-09 07:26:17 PDT --- (In reply to comment #0)

I wanted to try compressed texture support with r300g so I installed libtxc_dxtn.so and I got some nice improvements (for example in Neverwinter Nights textures looks many times better). However in Heroes of Newerth (HoN) there is big slowdown in menu and while in game it is so slow it almost looks like frozen and there is massive corruption.

might be bug in the drm checker.

[drm:r100_cs_track_texture_print] *ERROR* bpp 4 [drm:r100_cs_track_texture_print] *ERROR* compress format 2

Dunno how that would happen, but compressed textures should always show up with a bpp of 1 (with 4 the calculated size will be 4 times as big as needed). I know there were some bugs wrt compressed textures in that area, but pretty sure it should be fixed in 2.6.33...

https://bugs.freedesktop.org/show_bug.cgi?id=28459

--- Comment #3 from Marek Olšák maraeo@gmail.com 2010-06-09 07:54:13 PDT --- Yes, please give it a try.

https://bugs.freedesktop.org/show_bug.cgi?id=28459

--- Comment #5 from Marek Olšák maraeo@gmail.com 2010-06-09 08:55:38 PDT --- Either this:

git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6.git drm-linus

or 2.6.34 or any later version.

https://bugs.freedesktop.org/show_bug.cgi?id=28459

--- Comment #7 from Roland Scheidegger sroland@vmware.com 2010-06-10 05:17:58 PDT --- I think an explanation could be that there are two packets for the same texture unit in the command stream - if the first one is compressed, it would set cpp to 1 and set the compress bits, but if the second one is uncompressed it would set cpp according to format but the compress bits would stay as it's only written if the format is compressed.

https://bugs.freedesktop.org/show_bug.cgi?id=28459

--- Comment #9 from Fabio Pedretti fabio.ped@libero.it 2010-06-11 09:01:00 PDT --- (In reply to comment #8)

Created an attachment (id=36214)

View: https://bugs.freedesktop.org/attachment.cgi?id=36214 Review: https://bugs.freedesktop.org/review?bug=28459&attachment=36214

possible fix

If my theory is right, the attached patch might help (that's just a quick try, r100/r200 would need the same).

I was having the same crash problem with sauerbraten game (bug #27756) and this patch seems to fix it (tested with linux 2.6.34). When submitting the patch could you push it also to linux stable branch 2.6.32/33/34?

There are still 2 similar bugs that would be nice to have fixed: bug #27755 and bug #27507.

Thanks.

https://bugs.freedesktop.org/show_bug.cgi?id=28459

--- Comment #11 from Pavel Ondračka drakkk@centrum.cz 2010-06-11 12:07:10 PDT --- Thank you Roland, with your patch Heroes of Newerth works fine again. This bug can be closed after your patch is committed.

https://bugs.freedesktop.org/show_bug.cgi?id=28459

--- Comment #13 from Roland Scheidegger sroland@vmware.com 2010-06-12 06:57:13 PDT --- Review of attachment 36226: --> (https://bugs.freedesktop.org/review?bug=28459&attachment=36226)

Signed-off-by: Roland Scheidegger sroland@vmware.com

https://bugs.freedesktop.org/show_bug.cgi?id=28459

Marek Olšák maraeo@gmail.com changed:

What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED

--- Comment #15 from Marek Olšák maraeo@gmail.com 2010-06-21 14:05:06 PDT --- The patch has been committed to: git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6.git drm-fixes And should appear in the next kernel. Closing,

https://bugs.freedesktop.org/show_bug.cgi?id=28459

--- Comment #17 from Fabio Pedretti fabio.ped@libero.it 2010-08-02 23:59:18 PDT --- This is also fixed in 2.6.34.2.