Changes the fullscreen antialiasing mode. This function has to be called before OpenScreen() to have any effect. 'Mode' can be one of the following constants:#PB_AntialiasingMode_None: No antialiasing (default). #PB_AntialiasingMode_x2 : x2 fullscreen antialiasing (FSAA). #PB_AntialiasingMode_x4 : x4 fullscreen antialiasing (FSAA). #PB_AntialiasingMode_x6 : x6 fullscreen antialiasing (FSAA).Note: depending of the graphic card, this command can have a severe impact on rendering performance.