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Re: speed up the display on Linux [message #31123 is a reply to message #31122]

Wed, 12 June 2002 14:17

Mark Hadfield
Messages: 783
Registered: May 1995

Senior Member

"M. Katz" <MKatz843@onebox.com> wrote in message
news:4a097d6a.0206111308.3a713d19@posting.google.com...
> K0me problem with slow Object graphics rendering on Linux, so I had
> our resident guru look into it. Here's his comment to me.
>
> "Normally, all that you have to do is install the linux drivers for
> the specific video adapter that you have, and make sure that
> hardware acceleration is enabled for the video card. The hardware
> acceleration module is called "glx" and it can be found in the
> XF86Config file (usually /etc/X11/XF86Config). It should not be
> commented out."
>
> Once he fixed it, our OpenGL rendering is lightning fast. Now it's
> almost as nice as on my Mac :) Software rendering is not required
> here.

That's interesting. Here is one of the things Karl Schultz or RSI
wrote to me in response to the "Object graphics under Linux: are
they supposed to be that slow?" thread:

We didn't support "hardware" rendering on Linux in IDL 5.5. In
fact, on other UNIX-like systems with questionable OpenGL support,
we don't support it either. (You can tell if we try by seeing if
there is a "gl_driver.so" file in our binary distribution.) These
systems without the gl_driver file just end up using the Mesa
software rendering library for both IDL hardware and software
rendering.

[Karl also indicated that RSI are looking at enabling OpenGL support
in future versions.]

So I am surprised that enabling the glx module has any effect on IDL
object graphics performance. But perhaps I am confused about the
various layers in the graphics system and how they connect.

Are you sure that you get different results on Linux with hardware vs
software rendering?

Perhaps Karl can comment on this.

PS: I can't test any of this because I've gone back to Windows for the time
being.

--
Mark Hadfield "Ka puwaha te tai nei, Hoea tatou"
m.hadfield@niwa.co.nz
National Institute for Water and Atmospheric Research (NIWA)

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[Message index]

		Re: speed up the display on Linux By: Karl Schultz on Mon, 17 June 2002 10:45
		Re: speed up the display on Linux By: Mark Hadfield on Thu, 13 June 2002 22:55
		Re: speed up the display on Linux By: Randall Skelton on Wed, 12 June 2002 15:38
		Re: speed up the display on Linux By: Mark Hadfield on Wed, 12 June 2002 14:17
		Re: speed up the display on Linux By: Randall Skelton on Wed, 12 June 2002 02:18
		Re: speed up the display on Linux By: Mark Hadfield on Mon, 10 June 2002 15:29
		Re: speed up the display on Linux By: MKatz843 on Tue, 11 June 2002 14:08
		Re: speed up the display on Linux By: ssmilemonkey on Tue, 11 June 2002 09:02
		Re: speed up the display on Linux By: ssmilemonkey on Tue, 11 June 2002 08:33
		Re: speed up the display on Linux By: Randall Skelton on Mon, 10 June 2002 16:59
		Re: speed up the display on Linux By: David Fanning on Tue, 11 June 2002 02:38

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