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Mosaic
From SnesLab
Mosaic is a screen pixellation effect. It can be enabled or disabled on a per-background basis via bits 0-3 of 2106h. For a given background, the color of the pixel at screen position (H,V) is:
output_color(H,V) = input_color(floor(H/size)*size, floor(V/size)*size)
where size is the value of bits 4-7 of 2106h plus one. Thus, the shaded output consists of a grid of solid-colored squares where each entire square's color matches that of its top-leftmost input pixel.
The first mosaic square's location is always (0,0). Sprites are unaffected by the mosaic filter.
The mosaic filter has a horizontal and vertical subsystem. [3]
Examples
| Game Name | Mosaic Usage |
|---|---|
| Final Fantasy III (US) | when trying to select a disabled menu option |
| Final Fantasy Mystic Quest | upon entering battles |
| Star Ocean | upon entering every battle |