Re: [GtkGLExt] flipping Pixbuf images

[Philipp Klaus Krause <pkk spth de>]

Phillip Neiswanger schrieb:
> Hello,
>
> I am slowly learning gtkglextmm and opengl.  I wrote a small program 
> that  does texturing, and I've run into a small problem I was wondering 
> if you  could help me with.  I used Gdk::Pixbuf::create_from_file() to 
> load the  image and later a call to glTexImage2D() setup the texture.  
> However, the  image is displayed backwards on its quad.  The image has 
> text in it, so I  couldn't leave it that way.  I ended up flipping the 
> image with a paint  program.
>
> I am wondering if Gdk or GL provides a ready made function that could 
> have  done the flipping for me at run time.

You could have used different texture coordiantes (either manually or
using the texture matrix).

Philipp