While attending the Syntax demo scene party recently, I decided to look at an effect I had not yet tried but was keen to better understand. I decided it would be FLD – Flexible Line Distance. This effect allows you to move blocks of data vertically on the screen with little processing required. Because minimal processing is needed to move huge lumps of data, it’s great for sliding bitmaps images / logos up and down the screen without having to copy any of the data each frame.

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