hhmmmm...
Have you tried to compile the data points for the model (if they do not change
vectors)
somthing like this (from the log example):
/* Forward "G". */
glNewList (LOGO_G_FORWARD, GL_COMPILE);
glDisable (GL_CULL_FACE);
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, mat_blue);
logo_draw_g_plane (); /* My user function that calls the actual gl* to draw
*/
glEnable (GL_CULL_FACE);
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, mat_black);
logo_draw_i (); /* My user function that calls the actual gl* to draw */
glEndList ();
Hope this helps,
Shawn
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> Date: Tue, 9 Feb 2010 17:15:24 +0000
> From: [email protected]
> To: [email protected]
> Subject: [GtkGLExt] Is it possible to use overlays with gtkglextmm?
>
> Greetings,
>
> I have been writing, as my first significant project using OpenGL, a GUI
> using gtkglextmm for viewing large datasets as a cloud of points. I have
> some measuring tools that are currently rendered by drawing some of the
> points and then the line or box of the tool while the user is dragging
> the cursor. This works well with small datasets but gets sluggish with
> the larger ones, particularly the ones that require caching. I would
> like to use overlays as a conceptually and practically simple (I hope)
> way of drawing the rulers (and so on) without having to redraw the
> points each time.
>
> How do I do this while using gtkglextmm? I found the method
> Gdk::GL::Config::get_layer_plane() but no other obvious things in the
> documentation. Looking at an example using WGL, it appears I need to
> create an "layer context" for the overlay, but I do not see how to do
> that in gtkglextmm. Does it work in a similar way and, if so, how?
>
> Thanks in advance,
>
> Haraldur
>
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