In article <3e0076fd@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   I think that it uses the R and G values for the grayscale value (and leaves
> B to 0), but I can't remember for sure.

It only does that for TGA output, for PNG it creates a 16-bit PNG.

It isn't very clearly documented, and I really don't think a lot of 
thought was put into the feature...the way it was done, one channel of 
the TGA file is wasted, ordinary TGA files are pretty unuseable for 
heightfields, and it doesn't fit in with the other global settings, it 
looks like it should be a command line and .ini option, like the other 
file output options.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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