Font thresholds are used by the Font Manager to convert from the 16 anti-alias levels in the font definition to the logical colours available. They are read and set using a table of the form:
Offset Contents
0 Foreground colour offset
1 1st threshold value
2 2nd
3 ...
n &FF
For example in a 16 colour mode in the Wimp, background is 0, foreground is 1, foreground colour offset is 6, giving the table:
0 6
1 2
2 4
3 6
4 8
5 10
6 12
7 14
8 &FF
This causes the mapping from the 16 colours the font is defined in to the 8 available:
In Out Threshold
0 0
1 0
2 1 2
3 1
4 2 4
5 2
6 3 6
7 3
8 4 8
9 4
10 5 10
11 5
12 6 12
13 6
14 7 14
15 7
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