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Fwd: Frame rate of moontank demo

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gerard ziemski

hi guys,

We're working on a J1 demo:

https://scenario3d-fx.dev.java.net/svn/scenario3d-fx/trunk/sg3d-fx-demos...

and we're wondering if we're doing something wrong...

cheers

Begin forwarded message:

> From: gerard ziemski
> Date: April 7, 2008 4:48:11 PM MDT
> To: Kevin Rushforth
> Cc: anthony rogers
> Subject: Re: Frame rate of moontank demo
>
> hi Kevin,
>
> Neither me nor ant work on scenario, so we can't answer that question.
>
>
> cheers
>
> On Apr 7, 2008, at 10:22 AM, Kevin Rushforth wrote:
>
>> I was taking a look at the performance of moontank on various
>> platforms. It looks like something is limiting the animation to
>> about 12.5 fps, regardless of how fast the rendering is. To see
>> this, run moontank with the "-Dsg3d.fps=true" option, and make the
>> window small (about 100x100). Start the animation and let it run
>> for a bit. On my Linux machine, I see something like the following:
>>
>> Render rate: 738.7 frame rate: 12.5
>>
>> Meaning that the rendering is taking 1/738 seconds (abt 1.36 msec),
>> but the actual frame rate is only 12.5 fps (80 msec as measured
>> from the start of one frame to the start of the next). Any idea
>> what might be limiting this? The Scenario animation timing
>> framework should be running at 60 fps.
>>
>> -- Kevin
>>
>

[att1.html]

Joshua Marinacci

Note that this is a public list read by non sun people.

- Josh, on the go

On Apr 7, 2008, at 3:55 PM, gerard ziemski
wrote:

> hi guys,
>
> We're working on a J1 demo:
>
> https://scenario3d-fx.dev.java.net/svn/scenario3d-fx/trunk/sg3d-fx-demos...
>
> and we're wondering if we're doing something wrong...
>
>
> cheers
>
> Begin forwarded message:
>
>> From: gerard ziemski
>> Date: April 7, 2008 4:48:11 PM MDT
>> To: Kevin Rushforth
>> Cc: anthony rogers
>> Subject: Re: Frame rate of moontank demo
>>
>> hi Kevin,
>>
>> Neither me nor ant work on scenario, so we can't answer that
>> question.
>>
>>
>> cheers
>>
>> On Apr 7, 2008, at 10:22 AM, Kevin Rushforth wrote:
>>
>>> I was taking a look at the performance of moontank on various
>>> platforms. It looks like something is limiting the animation to
>>> about 12.5 fps, regardless of how fast the rendering is. To see
>>> this, run moontank with the "-Dsg3d.fps=true" option, and make the
>>> window small (about 100x100). Start the animation and let it run
>>> for a bit. On my Linux machine, I see something like the following:
>>>
>>> Render rate: 738.7 frame rate: 12.5
>>>
>>> Meaning that the rendering is taking 1/738 seconds (abt 1.36
>>> msec), but the actual frame rate is only 12.5 fps (80 msec as
>>> measured from the start of one frame to the start of the next).
>>> Any idea what might be limiting this? The Scenario animation
>>> timing framework should be running at 60 fps.
>>>
>>> -- Kevin
>>>
[att1.html]