texture problems

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From: Ive Akkermans (Ive.Akkermans++at++esat.kuleuven.ac.be)
Date: 03/18/2002 08:10:45

hi,

I sometimes get problems with textures I use on my objects. I sometimes
get warnings like:

PF Warning/Internal(12): gluBuild2DMipmaps failed on red.sgi
(id=2077)
PF Defaulting to bilinear.

I don't get this error all the time, and not always with this texture.
When I use gdb for instance, it produces the same error but on 2 other
textures.

In any case, when this error is produced, my app segfaults too:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (LWP 20168)]
0x40c1cb00 in gluScaleImage () from /usr/lib/libGLU.so.1
Current language: auto; currently c
(gdb) info stack
#0 0x40c1cb00 in gluScaleImage () from /usr/lib/libGLU.so.1
#1 0x00000003 in ?? ()
Cannot access memory at address 0xc1b7d9ac

as you can see, the stacktrace is of no help at all. It seems it just
hangs, like that.

When the above error (of gluBuild2DMipmaps) is not produced, my app runs
smoothly. Does anybody have an idea what could produce the
gluBuild2DMipmaps errors ? The textures are all in .sgi format,
well-shaped (2^x X 2^x) and well-formatted... IRIX doesn't produce any
errors, it's only on PC Linux (RedHat 7.2 performer 2.5)

thanks in advance for any help, 

-- 
Ive Akkermans
K.U.Leuven - ESAT-PSI     tel: +32-16-32.17.06  fax: +32-16-32.17.23
Kasteelpark Arenberg 10   e-mail:ive.akkermans++at++esat.kuleuven.ac.be
B-3001 Leuven-Heverlee    http://www.esat.kuleuven.ac.be/~iakkerma

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