[no subject]

[Tejas Hs <tejashs rocketmail com>]

Hello guys,

I am having some performance issues with Pixbuf, specifically on windows

This is the test program i am using

#include <gtkmm.h>
#include <iostream>
#include <chrono>

int main(int argc, char *argv[])
{

  Glib::RefPtr<Gtk::Application> app =
    Gtk::Application::create(argc, argv,
      "org.gtkmm.examples.base");

    Gtk::Window window;
    window.set_default_size(200, 200);

    Glib::RefPtr<Gdk::Pixbuf> apixbuf;
    std::chrono::system_clock::time_point pos[2];
    pos[0] = std::chrono::system_clock::now();
    apixbuf = Gdk::Pixbuf::create_from_file( "E:/2012-bb-jackal-1.jpg" );
    pos[1] = std::chrono::system_clock::now();
    std::cout << "Diff: " << ((pos[1] - pos[0]) / std::chrono::milliseconds(1)) << " ms" << std::endl;

    return app->run(window);
}

and I have used some pics from wikipedia to test, and the larger images take a long time to load, around 2000 ms.

(ex: https://upload.wikimedia.org/wikipedia/commons/d/df/2012-bb-jackal-1.jpg)

The cairo library is from the binary distribution from gtk+ website(http://www.gtk.org/download/win32.php) and i have compiled cairomm with ./configure --disable-static,  make, make install commands and no extra options.

The same program when i run on Ubuntu with default gtkmm installed it barely takes 100ms, so i can see an overall 20 times slowdown in windows, which i feel is too much.

Has anyone experienced this before or is there a known solution to this problem (or is it a bug)?

and these are the commands i used to compile

g++ -c -o2 --std=c++11 `pkg-config --cflags gtkmm-3.0` test.cpp -o test.o

g++ -o2 --std=c++11 test.o `pkg-config --libs gtkmm-3.0` -o test.exe

and the gtkmm version in both ubuntu and windows are 3.6