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1

Graphics / Why is displaying a sf::Sprite so incredible slow? [DONE]

« on: April 02, 2009, 05:08:33 pm »

Code for testing:

Code: [Select]

#include <iostream>
#include <SFML/Graphics.hpp>

int main( int argc, char **argv )
{
  sf::RenderWindow App;
  App.Create( sf::VideoMode::GetDesktopMode(), "Test", sf::Style::Close );

  sf::Image img;
  if ( !img.LoadFromFile ( "test.png" ) ) {
    return false;
  }

  sf::Sprite spr;
  spr.SetImage( img );


  while ( true ) {
    App.Draw ( spr );

    App.Display();
    App.Clear();

    std::cout << 1.f / App.GetFrameTime() << std::endl;
  }
}

$file test.png
test.png: PNG image data, 1024 x 1024, 8-bit/color RGB, non-interlaced

I've got 6-7 fps on a 2,16Ghz Core2Duo with a GeForce 9600M GT....
What is wrong here? I use sfml 1.4 on Gentoo Linux.

EDIT: Ok, its apparently a bug in the nvidia-driver or xserver. If I turn dualview off, it works pretty good (2000fps).

2

Graphics / Mysterious error when loading an image and use sf::String

« on: April 02, 2009, 02:23:50 pm »

At first, sorry for my bad english. I hope someone understand me.

Here is a little test-code:

Code: [Select]

#include <iostream>
#include <SFML/Graphics.hpp>

int main( int argc, char **argv )
{
  sf::RenderWindow App;
  sf::String str ( " Test " );

  App.Create( sf::VideoMode::GetDesktopMode(), "Test", sf::Style::Close );

  while ( true ) {
    App.Draw ( str );
   
    App.Display();
    App.Clear();
  }


}
It draws a string in the left upper corner and should look like this:


Allright? Good. Now my problem. I extend the code to this:

Code: [Select]

#include <iostream>
#include <SFML/Graphics.hpp>

int main( int argc, char **argv )
{
  sf::RenderWindow App;
  sf::Image img;

  if ( !img.LoadFromFile ( "test.png" ) ) {
    return false;
  }

  sf::String str ( " Test " );

  App.Create( sf::VideoMode::GetDesktopMode(), "Test", sf::Style::Close );

  while ( true ) {
    App.Draw ( str );
   
    App.Display();
    App.Clear();
  }
}
Annotation:

$ file test.png
test.png: PNG image data, 50 x 50, 8-bit/color RGB, non-interlaced

And now it looks like shit:

In my opinion, the code is right. Whats wrong here?
Btw. if I instantiate the sf::String first, then it looks like picture 1 - all right. But something goes definitive wrong. Any idea?


I use Gentoo Linux. My tested sfml versions are: 1.4, trunk svn und brunch 2.0 svn

EDIT 1: With the svn version i get this error message:

Failed to create image, its internal size is too high (300x230)

Its an texturesize ore somesthing like that? OpenGL? But 300x230? I have a NVidia GeForce 9600M GT and the newest stable driver -> 180.29