[Bug 27297] New: Gallium R300g - xscreensaver "endgame" hack runs much slower than under classic Mesa.

[Bug 27297] New: Gallium R300g - xscreensaver "endgame" hack runs much slower than under classic Mesa.

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27297

           Summary: Gallium R300g - xscreensaver "endgame" hack runs much
                    slower than under classic Mesa.
           Product: Mesa
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri-devel@lists.sourceforge.net
        ReportedBy: rankincj@googlemail.com


Using Mesa from git and Radeon 9550 (RV350). Under "classic" Mesa, the
"endgame" OpenGL hack from xscreensaver runs at between 15 fps and 20 fps.
However, it only runs at between 3 fps and 5 fps under Gallium. The CPU load
under Gallium is considerably higher too.


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[Bug 27297] Gallium R300g - xscreensaver "endgame" hack runs much slower than under classic Mesa.

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27297





--- Comment #1 from Chris Rankin <rankincj@googlemail.com>  2010-03-24 18:57:47 PST ---
This is with vanilla Linux 2.6.33.1, libdrm-2.4.18 and xf86-drv-ati from git.


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[Bug 27297] Gallium R300g - xscreensaver "endgame" hack runs much slower than under classic Mesa.

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27297





--- Comment #2 from Chris Rankin <rankincj@googlemail.com>  2010-03-25 06:48:20 PST ---
The glschool screensaver behaves similarly (when invoked from the command line
as a standalone application):

Classic Mesa: Load ~40% and ~30 fps
Gallium:      Load ~50% and ~25 fps

This screensaver is in package xscreensaver-gl-extras-5.10-6.1.fc12.1.i686


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[Bug 27297] Gallium R300g - xscreensaver "endgame" hack runs much slower than under classic Mesa.

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27297





--- Comment #3 from Corbin Simpson <MostAwesomedude@gmail.com>  2010-03-26 05:50:57 PST ---
Hm. It hits the immediate drawing path a lot. Changing the immd threshold from
10 to 6 fixes the colors, but slows down rendering even more. This probably
warrants further examination.


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[Bug 27297] [r300g] xscreensaver "endgame" hack runs much slower than under classic Mesa.

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27297


Corbin Simpson <MostAwesomedude@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
            Summary|Gallium R300g - xscreensaver|[r300g] xscreensaver
                   |"endgame" hack runs much    |"endgame" hack runs much
                   |slower than under classic   |slower than under classic
                   |Mesa.                       |Mesa.




--- Comment #4 from Corbin Simpson <MostAwesomedude@gmail.com>  2010-03-27 14:20:01 PST ---
Renaming for easier finding.

Profile shows nothing out of the ordinary. We must be making bad decisions
somewhere else along the line.


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[Bug 27297] [r300g] xscreensaver "endgame" hack runs much slower than under classic Mesa.

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27297


Corbin Simpson <MostAwesomedude@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|dri-                        |MostAwesomedude@gmail.com
                   |devel@lists.sourceforge.net |
             Status|ASSIGNED                    |NEW




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