[gs-devel] Question about output raster bit-order

[Dwight Kelly]

Hello,

I am working with the gdevbit driver in 8.6.3 to learn more about 
Ghostscript.

I can't seem to find any information about the organization of the 
output raster date for non mod-8 bit-depths, eg. 1, 2, 4, 12. For 
example, when rendering 2-bit RGB, how are the bits packed?

contiguous -- RGBRGBRGB/RGBRGBRGB
planar -- RRRGGGBBB/RRRGGGBBB
separate -- RRR/RRR/GGG/GGG/BBB/BBB

What options control the bit organization that Ghostscript generates? Is 
it the color encoding functions?

PS - when selecting 5-bits per sample in gdevbit the output raster is 
8-bits.

Thank you,

-- 
Dwight Kelly
Apago, Inc.  4080 McGinnis Ferry Rd  Suite 601 Alpharetta, GA 30005
voice:(770) 619-1884  fax:(770) 619-1885
email: dkelly at apago.com web: http://www.apago.com