Hello,
Thanks for your help!
I have tried to run the eqPixelBench with this sort-last configuration,and got
some information like these:
---------------------------------------------------------------------------
readback "channel1" GL_DEPTH_COMPONENT/GL_FLOAT [1272 766]: 44MPix/sec
(20.7741ms, 48.1368FPS)
assemble "channel1" GL_DEPTH_COMPONENT/GL_FLOAT [1272 766]: 0MPix/sec
(1599.82ms, 0.625069FPS)
---------------------------------------------------------------------------
But the graphic driver of my computer is up-to-date.
I have found that the performance problem occurred when channel1 do the
operation "glDrawPixels(...)" in function "Image::_startAssembleDB()";
The function is:
---------------------------------------------------------------------------
glDrawPixels( _pvp.w, _pvp.h, getFormat( Frame::BUFFER_DEPTH ),
getType( Frame::BUFFER_DEPTH ), _depthPixels.data );
---------------------------------------------------------------------------
It looks as if this opengl function is horrendously slow when it is drawing
large pixels-image with depth.
Should I replace glDrawPixels with opengl extension
"GL_EXT_packed_depth_stencil" ?
Best Regards!
zhulian.
>
> Today's Topics:
>
> 1. sort-last problem on windows xp platform (zhulian)
> 2. Re: sort-last problem on windows xp platform (Stefan Eilemann)
>
>
> ----------------------------------------------------------------------
> Message: 2
> Date: Mon, 5 Nov 2007 11:07:57 +0100
> From: "Stefan Eilemann" <[EMAIL PROTECTED]>
> Subject: Re: [eq-dev] sort-last problem on windows xp platform
> To: "Equalizer Developer List" <[email protected]>
> Message-ID:
> <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset="iso-8859-1"
>
> On 11/5/07, zhulian <[EMAIL PROTECTED]> wrote:
> >
> > hello,
> > I use Equalizer 0.3 under windows xp platform. I start the server with
> > config file "2-node-DB.eqc", but the display windows perform very very
> > slowly.
> >
>
> Since the performance is fine on Linux, I suspect that your pixel transfer
> rates with your Windows drivers are very slow. Can you run the eqPixelBench
> example with the configuration and check the DEPTH_COMPONENT/FLOAT
> values? If they are slow, I suggest updating your driver.
>
>
> Cheers,
>
> Stefan.
>
> End of eq-dev Digest, Vol 12, Issue 1
> *************************************
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