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IRIX Base Documentation 1998 November
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IRIX 6.5.2 Base Documentation November 1998.img
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mcogamma.z
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mcogamma
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1998-10-20
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133 lines
mmmmccccooooggggaaaammmmmmmmaaaa((((1111GGGG)))) mmmmccccooooggggaaaammmmmmmmaaaa((((1111GGGG))))
NNNNAAAAMMMMEEEE
mcogamma - set gamma on MultiChannel Option channels
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
mmmmccccooooggggaaaammmmmmmmaaaa ----pppp#### ----cccc#### ----ffff<<<<ffffiiiilllleeeennnnaaaammmmeeee>>>>
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
The _m_c_o_g_a_m_m_a command allows the setting of the gamma lookup table
directly for each output of the MultiChannel Option. This command affects
the MultiChannel Option only, and has no effect on the standard graphics
output.
OOOOPPPPTTTTIIIIOOOONNNNSSSS
----pppp ppppiiiippppeeee####
Specify which graphics pipe number to use. In a machine with a
single graphics pipe, this must be set to zero.
----cccc cccchhhhaaaannnnnnnneeeellll####
Specify which channel of the MCO to change; this must be a value
from zero to five.
----ffff ffffiiiilllleeeennnnaaaammmmeeee
Specify the file which describes the gamma table. This must be a
text file of 1024 lines; each line has three integers from 0 to
1023, in ASCII format, separated by white space. The three integers
represent the red, green, and blue output intensities respectively,
for this entry.
For instance, a file corresponding to a gamma of 1.0 would look like
this:
0 0 0
1 1 1
2 2 2
3 3 3
[... and so on ...]
1023 1023 1023
If the above file was saved to disk as gammaone, then the command
mcogamma -p0 -c2 gammaone
would set the gamma of the main graphics pipe, MCO output number 2,
to 1.0.
HHHHAAAARRRRDDDDWWWWAAAARRRREEEE
_m_c_o_g_a_m_m_a works only on IRIS RealityEngine, RealityEngine2, and VTX
graphics equipped with the optional MultiChannel Option (MCO) hardware.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
gamma(6D), gammaramp(3G)
PPPPaaaaggggeeee 1111
mmmmccccooooggggaaaammmmmmmmaaaa((((1111GGGG)))) mmmmccccooooggggaaaammmmmmmmaaaa((((1111GGGG))))
NOTES
The normal gamma command, and the value in the file
/etc/config/system.glGammaVal, have no effect on the MCO output.
MCO gamma reverts to the default whenever graphics is initialized.
PPPPaaaaggggeeee 2222