Lee Salzman's Page of Random Stuff

Stuff I've programmed:

• Tesseract A fork of Sauerbraten with fully dynamic lighting and many modern FX bullet-points: deferred shading, HDR, MLAA, SSAO, global illumination, screen-space reflection and refraction, and more...
• Sauerbraten I am currently the main programmer/maintainer/organizer of the Sauerbraten project.
• Cube I wrote the UDP networking for Cube and was also in charge of Linux/unixoid ports.
• ENet A UDP protocol library I wrote for Cube and Sauerbraten's networking supporting mixed reliable/unreliable message streams.
• Slate A novel programming language I wrote/designed a lot of based on merging multiple dispatching with prototype objects.
• POS A neat little operating system micro(ish)-kernel I wrote in ages yore based on dynamic linking everything rather than system calls. It has likely bit-rotted beyond all recognition. Peruse it at your own peril.
• Inter-Quake Model (IQM) format A binary skeletal-animation format designed as a replacement for MD5 and SMD skeletal-animation formats used in Quake-derived/Quake-like 3D engines.

Stuff I've contributed to:

• Red Eclipse (formerly Blood Frontier) Help with game-specific engine improvements and backporting miscellaneous cool stuff from Sauerbraten.
• AssaultCube Helped remove some of Cube's aging cruft and backport some niceties from Sauerbraten, as well as some new rendering optimizations and eye-candy effects.
• Lost Souls, text based RPG Back in the day when ASCII graphics were state of the art and before I got hooked on shooting things in 3D, I was addicted to hacking/slashing stuff in text. I helped develop/maintained/served as unofficial project leader for a cool little MUD that was novel for its time.
• DarkPlaces Contributed fast omni-directional shadowmapping with PCF filtering and culling, multi-threading and SIMD improvements to the software renderer, as well as the occasional bug fix.
• 0 A.D. Contributed skeletal-animation, shadowmapping, and water rendering improvements.

Commercial stuff I've worked on:

• Mozilla Firefox® Keeping the gears of the Firefox engine turning at Mozilla.
• 3rd Space Incursion™ Organized/programmed a total conversion of Sauerbraten to show off the TN Games® FPS Gaming Vest.
• BloodToll™ Programmed secure total conversion of Cube.

Stuff I've published:

• Prototypes with Multiple Dispatch slides A paper I published/presented at ECOOP 2005 based on a neat idea for combining multiple dispatch and prototype objects. Thanks to Jonathan Aldrich, who served as my undergraduate thesis advisor at Carnegie Mellon University and encouraged me to submit and helped me prepare my undergraduate thesis for ECOOP.

Random cool ideas I've written up:

• Simpler Soft Shadow Mapping addendum An extremely cheap way (while still very pretty) of doing soft character shadows that combine well with lightmapping.

Demos and miscellaneous throw-away code:

• A ragdoll editor and toy (includes source code for Linux and Windows) for Sauerbraten based on the paper Character Physics based on Newtonian Particle Simulation with Angular Constraints by David Rosen of Wolfire Games.
• A demo of "Light Propagation Volumes" (including source code for Linux and Windows), a technique for real-time global illumination, based on the paper Light Propagation Volumes in CryEngine 3 by Anton Kaplanyan of Crytek.