Log	PowerBook Configuration Log xw9300 Opteron Configuration Log

2007 Page 1
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2005 Page 1   Page 2

• Wed Jun 4 02:16:14 PDT 2008

  New log located here.

• Sun Dec 2 16:58:48 PST 2007

  Added some features:

  • --compressEstimate=NUM where NUM is a fraction in [0,1]. This vertically scales/compresses the spherical volume used to gether photons. This allowed me to render the movie below using photon mapping, using the settings shown:

    
    

    setenv PANE_LARGE_RADIUS 1
    setenv PANE_REFLECTION_SCALE 1
    
    pane -d512x512 -s4 --frames=180 \
    --noshiny --gatherrays=600 -o test.png -r scene2.iv --animate -u1 \
    --photons=6000000 --estimate=8 --compressEstimate=.02 -j2 --lightsamples=200
    

  • --depthimage=[1|2] creates a floating point depth map image (.pfm) recording the depth of each pixel. An argument value of 1 records the nearest sample in the pixel while a value of 2 records the average distance of all samples in a pixel.

    The .pfm file may be converted to .hdr, .exr, .or .png using three new tools:

    • pfmtohdr
    • pfmtoexr
    • pfmtopng

    

  • floating-point exception detection and signal reporting.
  • Many bug fixes.
  • Still trying to fix the Mac port before release.

• Sun Nov 4 23:52:17 PST 2007

  I actually encountered a value of 1.0 from my psuedo random number generator (which caused a SIGFPE, doh).

• Sun Jul 8 11:41:58 PDT 2007

  Mac OS X firewall fun

  1. Little Snitch - shows pop up when program accesses the internet (free for 3 hours at a time)
  2. WaterRoof - GUI frontend to built in ipfw firewall, allows adding logging
  3. sudo ipfw list - show firewall rules
  4. sysctl -w net.inet.ip.fw.verbose=1 - turns on firewall logging
  5. tail -f /var/log/system.log - to view log

• Mon Jun 11 11:42:00 PDT 2007

  
  Implemented Scott Draves IFS Fractal Flame algorithm. The second fractal uses Mobius Transformations, using parameters from Thomas Ludwig (aka lyc on deviantart.com), who got them from Aexion.

• Thu Jun 7 09:19:43 PDT 2007

  Playing with fractals and IFS.

  

• Sat Feb 24 16:01:58 EST 2007

  Useful resolution tools in linux:

  • gtf - generate's modeline useful for putting in xorg.conf
  • gvidm - lets you change resolution from command line (if that mode is available via xorg.conf)

• Tue Feb 9 23:03:28 EST 2007

  
  transcode -i frameList.txt -x imlist,null -g512x512 --use_rgb -z -y xvid,null -f10 -o frames.avi

  
  
  
  Original

  
  
  
  Ward histogram tone mapping

  
  
  
  Brightness reduction (50%)

  
  
  
  
  Brightness reduction (25%)

• Tue Feb 6 23:03:28 EST 2007

  
  Second link goes to 22MB animated .gif. I suspect those white speckles on the walls are inf's. Drat.

• Sat Feb 3 06:29:37 EST 2007

  
  Preliminary brain data renderings. The red glow in the second one is an artifact I am investigating.

  Files: Conversion script plus scenes (2KB) and generated brain.iv (2.7MB, requires res-220.tar)

• Thu Feb 1 23:45:37 EST 2007

  To tunnel vnc over ssh to view hostA from hostB, through host C:

  hostA> vncserver

  hostB> ssh -L 6666:hostA:5901 hostC
  hostC> ssh -L 5901:hostA:5901 hostA
  hostB> vncviewer localhost::6666
  

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Kevin Beason /

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