[GRASS5] Re: max res. PPM image dump from NVIZ

[Glynn Clements]

Hamish wrote:

> > > X Error of failed request:  GLXBadContextTag
> > >   Major opcode of failed request:  144 (GLX)
> > >   Minor opcode of failed request:  1 (X_GLXRender)
> > >   Serial number of failed request:  3736
> > >   Current serial number in output stream:  3737
> > 
> > I can't reproduce this with 5.3, and I don't have an up-to-date 5.7
> > built right now. Can you see if it happens for you with 5.3?
> 
> Happens both with the latest 5.3 and 5.7.
> 
> Just after it finishes writting the PPM, the low-res 'grid' is drawn,
> but the southern 10-15% is missing. When you change the view angle you
> are looking at a blank screen, when you finish it redraws the hi-res
> 'polygon' version ok.
> 
> -> Resizing the viewing window causes the above error (& crash).

I can't reproduce this.

However try moving the Destroy_OS_Ctx() call in do_zoom.c to *before*
the point where it tries to redraw everything, i.e.:
      
#if defined(HAVE_PBUFFERS) || defined(HAVE_PIXMAPS)
    Destroy_OS_Ctx();
#endif

/* Done */
/* Reset viewport and draw orinanl view */
    GS_set_viewport(a_orig, c_orig, b_orig, d_orig);
    Ndraw_all_cmd(data, interp, argc, argv);

-- 
Glynn Clements <glynn.clements at virgin.net>