RHOPTIMIZE(1)
NAME
rhoptimize - optimize beam locations in holodeck file
SYNOPSIS
rhoptimize [ -u ] src_holo [ dest_holo ]
DESCRIPTION
Rhoptimize optimizes beam positions and eliminates fragment waste in
the holodeck file src_holo, writing the result to dest_holo, or back
into src_holo if only one argument is given. This may improve rendering speed on large holodecks, which tend to have widely dispersed beam
positions that cause delays due to long file seeks. It may also reduce
the size of the file, since large holodecks become fragmented as they
fill up with new ray samples. (Use the rhinfo(1) program to determine
holodeck file fragmentation.) The -u option adds a check to make sure
that each ray sample is unique, i.e., the same sample is never given
twice. This check is usually unnecessary, but may eliminate redundant
samples from some holodeck files.
EXAMPLE
- To optimize the beam order in old.hdk and write the results to new.hdk:
- rhoptimize old.hdk new.hdk
- To optimize beam order in scene.hdk:
rhoptimize scene.hdk
NOTES
If rhoptimize is given only one file argument, it creates a temporary
file in the same directory, and moves it onto the original file once it
has successfully completed its operation. If the operation fails for
some reason, the temporary file is removed and the original holodeck is
left unchanged.
This program generally takes several minutes to run and offers no
progress reports.
FILES
rho????.hdk temporary file to hold new holodeck
AUTHOR
Greg Ward Larson
ACKNOWLEDGMENT
This work was supported by Silicon Graphics, Inc.