Re: Pango draw text is 600 times slow !!??

[Behdad Esfahbod <behdad cs toronto edu>]

I say it this way:  Setting up pango, drawing, and freeing
everything, is 600 times slower than drawing using X call.  But
perhaps it is not what people are interested in.  What people are
interested in is how many times pango drawing is slower than X
call.  Setting up pango and freeing memory is done once and
should not be counted there.


behdad

On Fri, 19 Dec 2003, Tom Liu wrote:

> Please see this code: it is 600 times slower to use pango.
>
> I think it must be my program's problem. But how to use pango correctly?
>
> The code to use pango draw string I just copied for GTK FAQ.
>
>
>
> Thanks
>
>
>
>
>
> //to use pango:
>
>     for(k=0;k<1;k++) {
>
>     for (i=0;i<100;i++){
>
>             for (j=0;j<100;j++) {
>
>                     PangoLayout *layout = gtk_widget_create_pango_layout
> (widget, "abcd");
>
>                     PangoFontDescription *fontdesc =
> pango_font_description_from_string ("Luxi Mono 12");
>
>                     pango_layout_set_font_description (layout,
> fontdesc);
>
>                     gdk_draw_layout (w->window,m_gc,i,j,layout);
>
>                     pango_font_description_free (fontdesc);
>
>                     g_object_unref (layout);
>
>                     seq++;
>
>             }
>
>             seq++;
>
>     }
>
>
>
> // to use the xcall.
>
>     for(k=0;k<1;k++) {
>
>     for (i=0;i<100;i++){
>
>             for (j=0;j<100;j++) {
>
>                     XDrawString(GDK_DISPLAY(),
> GDK_WINDOW_XID(w->window), GDK_GC_XGC(m_gc),
>
>                                      i , j, "abcd", 4);
>
>                     seq++;
>
>             }
>
>             seq++;
>
>     }