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Re: OpenGL + Linux crashes [message #38493 is a reply to message #38360]

Wed, 10 March 2004 17:22

JD Smith
Messages: 850
Registered: December 1999

Senior Member

On Tue, 09 Mar 2004 13:27:32 -0700, Karl Schultz wrote:

>
> "Michael Wallace" <mwallace.removethismunge@swri.edu.invalid> wrote in
> message news:104s3g1s2kg8vf1@corp.supernews.com...
>>> when attempting to use any of IDL's OpenGL 3D stuff (like the Demo ->
>>> Itools, for example), you might try the following:
>>>
>>> setenv MESA_NO_ASM 1
>>>
>>> which disables some specific ASM code in the Mesa library which was
>>> causing these types of crashes for me. I use an ATI Radeon 7500 +
>>> XFree86 4.3.0's radeon drivers. With this fix in place, it seems
>>> stable, and is definitely much faster than software rendering. Give a
>>> a try.
>>
>> This is awesome! I also have a Fedora box with an ATI Radeon 7500 and
>> it works great. I'm just curious what assembly language optimizations
>> are conflicting with IDL's OpenGL stuff. Oh, well. At least it works
>> better than using software rendering everywhere.
>
> On recent Linux/XFree86 installations, there are actually two instances of
> the Mesa library in play when you run IDL. One is the Mesa that is linked
> directly to IDL that IDL uses to perform software rendering and really isn't
> involved any further in this discussion. The other instance is over in the
> X server where it implements OpenGL (via GLX) in software if there is no
> hardware acceleration support. For systems with the hardware and software
> support for hardware acceleration, Mesa still serves as the OpenGL
> implemention and it uses various driver modules to interface with the
> specific hardware.

<snip>

Thanks Karl:

It's great to know someone at RSI is staying on top of these issues.
Not only do we get an IDL which works with standard drivers, but the
3D support in XFree86 gets improved too! Keep up the good work.

JD

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[Message index]

		OpenGL + Linux crashes By: JD Smith on Tue, 02 March 2004 18:06
		Re: OpenGL + Linux crashes By: JD Smith on Wed, 10 March 2004 17:22
		Re: OpenGL + Linux crashes By: Karl Schultz on Mon, 15 March 2004 07:50
		Re: OpenGL + Linux crashes By: Foldy Lajos on Tue, 09 March 2004 13:07
		Re: OpenGL + Linux crashes By: Karl Schultz on Mon, 15 March 2004 07:28
		Re: OpenGL + Linux crashes By: Karl Schultz on Tue, 09 March 2004 12:27
		Re: OpenGL + Linux crashes By: Michael Wallace on Tue, 09 March 2004 10:33
		Re: OpenGL + Linux crashes By: Karl Schultz on Tue, 16 March 2004 07:54
		Re: OpenGL + Linux crashes By: JD Smith on Mon, 15 March 2004 12:50

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