3 # Explanation of the filters:
5 # If, for example, red is set to "a b c d",
6 # where a, b, c, and d are four numbers,
7 # then the output red value for a given input
8 # color will be computed as follows:
10 # output_red = ( a * input_red +
12 # c * input_blue ) / 256 + d
14 # So, a, b, and c are scale factors
15 # (out of 256) for how much weight the input
16 # red, green, and blue components have in the
17 # output color, and d is a constant base
18 # value for the output.
20 # Below are some sample filters, which should
21 # make everything more clear.
24 # Default filter as of 1.0.3
26 set green 25 170 25 35
34 # Lighten the display uniformly