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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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usr
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catman
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g_man
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cat3
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standard
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writemask.z
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writemask
Wrap
Text File
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1998-10-20
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2KB
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67 lines
wwwwrrrriiiitttteeeemmmmaaaasssskkkk((((3333GGGG)))) wwwwrrrriiiitttteeeemmmmaaaasssskkkk((((3333GGGG))))
NNNNAAAAMMMMEEEE
wwwwrrrriiiitttteeeemmmmaaaasssskkkk - grants write permission to bitplanes
CCCC SSSSPPPPEEEECCCCIIIIFFFFIIIICCCCAAAATTTTIIIIOOOONNNN
vvvvooooiiiidddd wwwwrrrriiiitttteeeemmmmaaaasssskkkk((((wwwwttttmmmm))))
CCCCoooolllloooorrrriiiinnnnddddeeeexxxx wwwwttttmmmm;;;;
PPPPAAAARRRRAAAAMMMMEEEETTTTEEEERRRRSSSS
_w_t_m expects a mask whose bits control which bitplanes are available for
drawing and which are read only.
The mask contains one bit per available bitplane. If a bit is set
in the writemask, the system writes the current color index into
the corresponding bitplane. If a bit is set to zero in the
writemask, the corresponding bitplane is read-only.
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
Use wwwwrrrriiiitttteeeemmmmaaaasssskkkk to reserve bitplanes for special purposes. When the
writemask marks a bitplane as read-only, that bitplane is write protected
from ordinary drawing routines.
Use RRRRGGGGBBBBwwwwrrrriiiitttteeeemmmmaaaasssskkkk in RGB mode.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
color, drawmode, RGBwritemask
BBBBUUUUGGGGSSSS
wwwwrrrriiiitttteeeemmmmaaaasssskkkk does not work properly on the IRIS-4D VGX, VGXT and SKYWRITER
models when the current drawmode is not NNNNOOOORRRRMMMMAAAALLLLDDDDRRRRAAAAWWWW.
PPPPaaaaggggeeee 1111