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nc:=255// (>= 2, 8bit, index 0 is reserved for transparent key color)
Following the SIXEL spec in DEC STD 070 this is actually not needed, there is no link or notion in the spec of slot 0 being reserved for unencoded pixels. The addressable color slots are independent from the background color (thus you can use all 256 slots). The background color itself is something a device might provide by other means (prolly startup color or BCE).
The text was updated successfully, but these errors were encountered:
Here you state to reserve color slot 0 for transparent (aka background color):
go-sixel/sixel.go
Line 38 in 8aa94a3
Following the SIXEL spec in DEC STD 070 this is actually not needed, there is no link or notion in the spec of slot 0 being reserved for unencoded pixels. The addressable color slots are independent from the background color (thus you can use all 256 slots). The background color itself is something a device might provide by other means (prolly startup color or BCE).
The text was updated successfully, but these errors were encountered: