Re: glTexImage3D missing?

[Brian Ford <Brian dot Ford at FlightSafety dot com>]

On Wed, 30 Aug 2006, Bernhard Ege wrote:

> I am trying to compile an opengl program and have managed to get all but
> 1 error to disappear:
>
> gcc  -o 3dtexture 3dtexture.c -lglut32 -lglu32 -lopengl32
> /cygdrive/c/DOCUME~1/bme/LOCALS~1/Temp/ccAhs05G.o:3dtexture.c:(.text+0xa7b):
> undefined reference to `_glTexImage3D@40'
> collect2: ld returned 1 exit status
> make: *** [3dtexture] Error 1
>
> I have been unable to resolve this error. I did find _glTexImage3D in
> /usr/X11R6/lib/libGL.dll.a but I have been unable to take advantage of it.
>
> Am I missing something obvious? ;-)

Several things.  You linked with -lglut32 -lglu32 -lopengl32 which are
Windows native libraries, but posted to the cygwin-xfree mailing list.  As
such, you're off topic ;-).  cygwin is the place to discuss these
libraries.

/usr/X11R6/lib/libGL.dll.a is the OpenGL for X11 and would be linked as
-L/usr/X11R6/lib -lGLU -lGL (I think that freeglut is now available for
X11 in Cygwin, but I have never used it).

Microsoft's OpenGL is version 1.1.  glTexImage3D is not a version 1.1
feature.  You need to learn how to load extensions and look at
EXT_texture3d and glTexImage3DEXT.

-- 
Brian Ford
Lead Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
the best safety device in any aircraft is a well-trained crew...

.


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