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Offline jessedeming

Junior Newbie




Java games rock!


« Posted 2003-10-28 18:10:00 »

Under what situations does GraphicsPrimitiveMgr get called?  We are calling it a lot and would like to avoid it.  This is the profile with 712 blits to the screen.

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   1 11.56% 11.56%  403073    39 sun.java2d.loops.GraphicsPrimitiveMgr$2.compare
   2  9.22% 20.78%  399175   239 java.lang.String.compareTo
   3  8.69% 29.47%  359899   364 sun.java2d.loops.GraphicsPrimitiveMgr.compareSurfaces
   4  6.48% 35.96%  359899   325 sun.java2d.loops.GraphicsPrimitiveMgr.access$000
Offline Jeff

JGO Coder




Got any cats?


« Reply #1 - Posted 2003-10-28 22:35:26 »

This is a totally implementation dependant question isn't it?

If I were you and i wanted to knwo this for my particular case (my code and the exact version of the JDK/VM I was using) I'd fire up a profiler and  look at the call traces.

Jk

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Offline jessedeming

Junior Newbie




Java games rock!


« Reply #2 - Posted 2003-10-30 13:39:33 »

The call traces related to the GraphicsPrimitiveMgr unfortunately aren't at all clear (to me anyway).  They don't correspond to any methods that we are calling:

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TRACE 39:
sun.java2d.loops.GraphicsPrimitiveMgr$2.compare(GraphicsPrimitiveMgr.java:Unknown line)
java.util.Arrays.binarySearch(Arrays.java:Unknown line)
sun.java2d.loops.GraphicsPrimitiveMgr.locate(GraphicsPrimitiveMgr.java:Unknown line)
sun.java2d.loops.GraphicsPrimitiveMgr.locatePrim(GraphicsPrimitiveMgr.java:Unknown line)


This call trace corresponds to the first line in from the original post.  

jd
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Offline Jeff

JGO Coder




Got any cats?


« Reply #3 - Posted 2003-10-31 04:37:20 »

That can't possibly be the full trace.

How are you getting the trace? Are you using a real tool like OptimizeIt or trying to guess from the limited info you get from Hprof?

I recognize the reference to sun.java2d.loops.  This is deep in the Java2D render pipeline.

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