Re: [GtkGLExt] stencil buffer

["Timothy M. Shead" <tshead k-3d com>]

Daniel Godas wrote:
> > On Wed, Sep 15, 2004 at 07:45:04PM +0200, Daniel Godas wrote:
> >
> > > id like to use the data from the stencil buffer to generate a bitmap
> > > mask for a gdkwindow (to change its shape), does anybody know how to
> > > get this data?
> >
> > Tricky.
> >
> > Setup an appropiate stencil function after you have your stencil, and
> > then draw a large monocromatico Quad, read the contexts of the color
> > buffer with glReadPixels.

Why not read the data directly using glReadPixels() and format set to 
GL_STENCIL_INDEX?

Cheers,
Tim