Bugs item #1196677, was opened at 2005-05-06 10:10
Message generated for change (Comment added) made by brianp
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Category: mesa-core
Group: Rendering Error
>Status: Closed
>Resolution: Out of Date
Priority: 5
Submitted By: Sheila Santos (sheila_santos)
Assigned to: Nobody/Anonymous (nobody)
Summary: osmesa 64 bit problem with gl display lists using glMaterial

Initial Comment:
We are using osmesa, mesa version 6.0.1, for our
software renderer on both 32 bit Intel Xeon machines
and 64 bit AMD Opteron machines.

I have found a potential 64 bit problem in the gl
display list code when defining object material
properties.  Our code looks something like:

glNewList( 1, GL_COMPILE );
glMaterialfv( GL_FRONT, GL_SPECULAR, specularVal );
glMaterialf(  GL_FRONT, GL_SHININESS, shininessVal );
glMaterialfv( GL_FRONT, GL_AMBIENT, ambientVal );
glMaterialfv( GL_FRONT, GL_DIFFUSE, diffuseVal );
glEndList();

Later on we excute the list when drawing the polygons.

This works fine on 32 bit builds, but on 64 bit builds
my polygons are not visible.  If I hardcode the
glMaterial calls in place of executing the display
lists, the 64 bit build behaves as the 32 bit build -
polygons visible and properly shaded.

This may point to a 64 bit issue in the
glMaterial/glDisplayList code for osmesa.

Thanks for looking into this.


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>Comment By: Brian Paul (brianp)
Date: 2006-05-10 08:56

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I assume 6.4.2 works for you.  If not open a new bug report
on freedesktop.org.


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Comment By: Sheila Santos (sheila_santos)
Date: 2005-05-09 07:37

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We are using Red Hat Linux release 8.0 (Psyche) and Red Hat
Enterprise Linux WS release 3 (Taroon Update 3), for both
our 32 and 64 bit machines.

I'll try upgrading to 6.2.1 and writing a test app that
reproduces the problem.


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Comment By: Brian Paul (brianp)
Date: 2005-05-07 10:27

Message:
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What OS are you working on?  There have been recent
check-ins for fixing some 64-bit Windows issues.

Otherwise, I'd suggest trying a more recent version of Mesa,
such as 6.2.1.

Finally, if you could provide a small test program to
reproduce the problem, I could run it on 64-bit Linux and
see what happens.


----------------------------------------------------------------------

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