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Download Dither
Matrix Command
The Download Dither Matrix command specifies a single
matrix for all three primary colors, or three matrices (one
for each primary), which may have different sizes and
contents.
?*m#W[data]
# = Number of bytes of byte-aligned binary data
in the data field
Default = 0
Range = 7 to 32767 (command is ignored for
values of 0 – 6; values larger than
32767 or device limits are clamped;
signs are ignored)
A downloaded user-defined dither will not take effect until
after explicitly selecting it via a render algorithm command
with a value of 9 or 10. However, if the current render
algorithm (or last render algorithm received) was a
user-defined algorithm (value 9 or 10), then a user-defined
matrix will take effect as soon as it is downloaded. In this
case, another render algorithm command (value 9 or 10) is
not needed to “select” the downloaded user-defined dither
matrix. This is due to the fact that the downloaded
user-defined dither algorithm is the currently selected
render algorithm.
If the command is sent before downloading a user-defined
dither matrix, the device will use the device’s user-defined
dither default, if available, or, if no default is available, will
use the default render algorithm.
Note The user-defined dither matrix must be defined for
processing with additive colors (RGB).
Since user-defined algorithms cannot be used when a
device-independent color space is active, trying to specify a
4-6 Modifying Output Color4-6 Modifying Output Color