Re: [PyOpenGL-Users] gluBuild3DMipmaps

[Andrew W. <and...@al...>]

Hey Jon,
  Would you mind sharing your GLSL shaders program?  Also, I seemed to have
cleared up my 3d texture problem by installing glewpy, don't know why this
fixed it but it just started working...
  Thanks
  Andrew


On 2/11/07, JoN <jo...@we...> wrote:
>
>
> Ah, you are another poor fool like me, interested in 3D textures.
> Their support is extremely patchy across different drivers (then there is
> the
> _vtc compression issue too!).
>
> Sorry I realize this email isn't particularly helpful but be warned: 3D
> textures
> are another world of pain/can of worms again in terms of getting access to
> them,
> you have another hill to climb!
>
> I'm doing some stuff at the moment that is working, using GLSL shaders and
> 2D
> textures that pretend to be 3D textures (eg. one 512x512 2D texture can
> contain
> 64 (that's 8x8 squares) x 64texel-by-64texel squares, so you can have a 3D
> texture that is 64 slices deep, with each slice a 64x64 texture).  This
> turns
> out to be very quick if you program your fragment shaders right and use
> the
> built-in stuff (I'm on Nvidia), plus you get the added advantage that 2D
> textures and 2D texture _compression_ is fully supported everywhere with
> no ifs
> or buts.
>
> More fud for thot.
>
> Jon
>
>
> Quoting Andrew Wilson <and...@al...>:
>
> > Hello,
> >   Great hack, got it working no problem now.  One side question,
> > gluBuild3DMipmaps works without a hitch, but when I call
> bool(glTexImage3D)
> > I get "False" back. glGetString(GL_VERSION) returns 2.0.1 so supposedly
> > teximage3d is supported on gl > 1.2.  Am I missing something here?
> >   Thanks
> >   Andrew
> >
> >
> > On 2/9/07, Mike C. Fletcher <mcf...@vr...> wrote:
> > >
> > > Andrew Wilson wrote:
> > > > Hello,
> > > >   I found a newer glu version compiled for win32.  Unfortunately
> winxp
> > > > has a file protection scheme that won't allow me to overwrite
> > > > glu32.dll with the newer version.  Is there a way to force pyopengl
> to
> > > > use different dll's?
> > > There is, though it feels a bit hacky and has AFAIK never been tested.
> > > Here's an example where I make the GLU DLL a completely unrelated
> > > library (so there will be no GLU functionality at all):
> > >
> > > >>> import ctypes
> > > >>> glu = ctypes.CDLL( '/usr/lib/libFLAC.so' )
> > > >>> platform.GLU = glu
> > > >>> from OpenGL.GLU import *
> > > >>> gluGetString
> > > <OpenGL.platform.gluGetString object at 0x2aaaabc82f10>
> > > >>> gluGetString( GLU_VERSION )
> > > Traceback (most recent call last):
> > >   File "<stdin>", line 1, in <module>
> > >   File
> > >
> "/var/pylive/src/OpenGL-dev/OpenGL-ctypes/OpenGL/platform/__init__.py",
> > > line 186, in __call__
> > >     self.__name__, self.__name__,
> > > OpenGL.error.NullFunctionError: Attempt to call an undefined function
> > > gluGetString, check for bool(gluGetString) before calling
> > >
> > > (You will need to use WinDLL, not CDLL for win32).  You may want to
> use
> > > OpenGL.platform.ctypesloader.loadLibrary( ctypes.windll,
> > > path_to_your_library ) instead of the bald ctypes operations, as older
> > > ctypes versions should be supported with that function.
> > >
> > > Good luck,
> > > Mike
> > >
> > > >
> > > > On 2/8/07, *Andrew Wilson* <and...@al...
> > > > <mailto:and...@al...>> wrote:
> > > >
> > > >     Hey Mike,
> > > >       You hit the nail on the head, my version of GLU is '1.2.2.0
> > > >     <http://1.2.2.0> Microsoft Corporation'. This may be a silly
> > > >     question, is there any way to update glu to 1.3 on win32?
> > > >       Thanks
> > > >       Andrew
> > > >
> > >
> > > --
> > > ________________________________________________
> > >   Mike C. Fletcher
> > >   Designer, VR Plumber, Coder
> > >   http://www.vrplumber.com
> > >   http://blog.vrplumber.com
> > >
> > >
> >
>
>
>
>
> --------------------------------------------------------------------
> Come and visit Web Prophets Website at http://www.webprophets.net.au
>
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job
> easier.
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> PyOpenGL Homepage
> http://pyopengl.sourceforge.net
> _______________________________________________
> PyOpenGL-Users mailing list
> PyO...@li...
> https://lists.sourceforge.net/lists/listinfo/pyopengl-users
>