Almost all image editors have the following checkerboard background for showing transparent images:
My app lets users view transparent images (only view, not edit) with a background of their choice. There's an option for selecting the above background, but instead of that static background, it has another option for a scrolling checkerboard background:
(The animation is smooth in the app. Here is an Windows executable which shows the animated background: https://drive.google.com/file/d/0B_j1LIXzMyEYcTBiX1BiUjNsU0U/edit?usp=sharing)
It also has options for black, gray, white color backgrounds.
I want to know whether this is an useful option or should I remove it?
If it is useful how should the background scroll: diagonally, vertically or horizontally?