// discard roles, where one does convolutions by means of many small FFTs, but
// could also work as a (relatively boring) video effect on its own.
//
-// Note that vertical slices happen from the bottom, not the top, due to the
-// OpenGL coordinate system.
+// Note that vertical slices happen from the top, consistent with the rest of
+// Movit.
#include <GL/glew.h>
#include <string>