glSOAR is ObjectPascal implementation of SOAR terrain rendering algorithm using OpenGL.
It is compatible with FPC and Delphi compilers and works in Windows and Linux.
SOAR was published by Peter Lindstrom and Valerio Pascucci in 2001.
Papers and C implementation can be found at
http://www-static.cc.gatech.edu/~lindstro/software/soar/.
You can download glSOAR in Downloads/Projects section. Archive is quite large (~30 MB) and contains Windows and Linux binaries, sample terrains, and source code (tested with Delphi and FPC).
Parameters for glSOAR can be passed to program as command line arguments.
Alternatively, you can use included GUI tool (Windows only). List of parameters as well as controls is included in archive. You can also run glSOAR in Benchmark mode and compare your results with some others (located in Bin/Results directory).