I am trying to make a game "4d"(like in a 3d cinema).I will use color filtering for this, and I know this must be possible. I already tried to make two diferent screenshots of the game(left and right eye) and take te blue and green values of the first picture, and the red of the second one. However the pixel_for_bmap function does not seem to work as it should so this went wrong. I wonder if anyone elso knows how to solve this problem.