Re: [Mesa3d-users] Anti-aliasing lines Intel GMA 4500 question

[Brian P. <br...@vm...>]

Stefan Parvu wrote:
> Hi all,
> 
> Im currently developing a prototype as described here:
> http://www.systemdatarecorder.org/cpuplayer/ using OpenGL.
> Im basically working on Solaris x64 + Nvidia and Ubuntu
> x64 + Mesa as main platforms.
> 
> Im trying to understand why my code does not execute similar
> regarding Anti-aliasing, as described under:
> http://systemdatarecorder.org:9009/bugzilla/show_bug.cgi?id=42
> 
> Check the Solaris 11 and Ubuntu screenshots attached.

I don't see any attachments.


> On my Ubuntu laptop Im using:
> direct rendering: Yes
> OpenGL renderer string: Mesa DRI Mobile Intel GM45 Express Chipset GEM 
> 20090712 2009Q2 RC3
> 
> This is a Ubuntu 9.10 x64 using Intel GMA 4500 MHD, running Mesa 7.6.0-1.
> 
> Any ideas, is this a problem with Mesa OpenGL implementation, is this
> a Intel driver bug or ... !?

Are you talking about line antialiasing?

I think the 4500 has some limitations w.r.t. antialiased lines.  You 
might try settting the INTEL_STRICT_CONFORMANCE env var to 1 and see 
what happens.  This will turn on software-drawn AA lines.  Performance 
will be poor, however.

-Brian