[SOLVED]How can I do this screen transition effect?

[Elias Daler]

When you select a level in Super Mario World the screen fades to black and image becomes more and more pixelated over a short period of time. When the level is loaded the same transition happens in reverse.
How can I do something similar in SFML?

[Jesper Juhl]

You could use a shader.
There's an example of a pixelate shader shipping with the SFML sources.

[Elias Daler]

Thanks. That's exactly what I needed! By the way, is there anyway to apply this shader to the sf::RenderWindow, so I don't have to pass sf::Shader to every draw function?

[zsbzsb]

Draw your entire scene on a render texture and then draw that render texture to the window with the shader.

[Laurent]

It is explained in the doc / tutorial, by the way.

[Elias Daler]

Thanks, it worked