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  [OGL] Java2D performance regression with Must.b33  (Read 1025 times)
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Offline Linuxhippy

Senior Devvie


Medals: 1


Java games rock!


« Posted 2005-05-16 06:59:40 »

Hi there!

I've found an performance-regression on my GF-2 class board when switching to mustang-b33.

The demos.mix.bezierscroller (text, duke transparent, bezier) runs A LOT slower, basically because blitting the duke is very slow.
If I only enable the duke-image I get:
mu.b33  X11NoAA: 810fps,  X11AA: 145fps
java-1.5, X11NoAA: 700fps,  X11AA: 130fps
java-1.5  OGLNoAA: 77fps,   OGLAA: 75fps
mu.b33  OGLNoAA:  28fps,  OGLAA: 27fps

Since in both versions Sw->Surface blits occur for dukes image (java2ds trace=log output is identical), maybe sw->surface blits got slower?
Not really important for me at all, but thought that this could be useful for "our" java2d gods ;-)

lg Clemens
Offline trembovetski

Senior Devvie




If only I knew what I'm talking about!


« Reply #1 - Posted 2005-05-19 02:51:00 »

Thanks for the feedback.
I believe this is a known problem with nvidia drivers.
Same thing happens on Windows, btw.
Offline campbell

Junior Devvie




Java games rock!


« Reply #2 - Posted 2005-05-19 15:44:03 »

I was looking into this yesterday and wasn't able to see a difference in performance between 5.0 and 6.0-b33 when OGL is enabled.  I'll continue to investigate though...

Thanks,
Chris
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Offline Linuxhippy

Senior Devvie


Medals: 1


Java games rock!


« Reply #3 - Posted 2005-05-20 09:37:49 »

did you emnable duke-bliting, because by default it's disabled...

lg Clemens
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