[LIBART] Libart images look broken

[Samuel Abels <newsgroups debain org>]

Hello,

I am implementing a canvas using libart with C++ and now when I display
an image it looks broken (many random pixels are cluttered over the
image). This is what I do:

------------------------
#define BYTES_PER_PIXEL 3
#define ROWSTRIDE       (unsigned int)(rect.get_width() * BYTES_PER_PIXEL)
  
  // Draw the path to a buffer.
  art_u32 color  = PCANVASLEAFPOLYGON_BORDER_COLOR;
  art_u8* buffer = art_new(art_u8, rect.get_width()
                                 * rect.get_height()
                                 * BYTES_PER_PIXEL);
  
  art_rgb_run_alpha(buffer,
                    PCANVASLEAFPOLYGON_BACKGROUND_COLOR_R,
                    PCANVASLEAFPOLYGON_BACKGROUND_COLOR_G,
                    PCANVASLEAFPOLYGON_BACKGROUND_COLOR_B,
                    PCANVASLEAFPOLYGON_BACKGROUND_COLOR_A,
                    rect.get_width() * rect.get_height());
  
  pixbuf = Gdk::Pixbuf::create_from_data((guint8*)buffer,
                                         Gdk::COLORSPACE_RGB, 
                                         TRUE,
                                         8,
                                         rect.get_width(),
                                         rect.get_height(),
                                         ROWSTRIDE);
  
  pixbuf->save("bla.png", "png"); //FIXME!!!
  
  free(rotated);
  art_svp_free(path);
  art_free(buffer);
------------------------  

Also, when I do this often enough the application segfaults somewhere in
Gtk::Pixbuf when it is exposed.
I am probably writing into unallocated memory, only I do not know why.
Can somebody please point me to what I am doing wrong?

-Samuel
-- 
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|      Samuel Abels       |   http://www.debain.org    |
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