RADIANCE Compile Switches
Here is a list of compile switches, used to customize Radiance code
for specific machines and users:
Other defines may be used to overcome portability problems on various operating systems.
- Alignment type, machine-dependent. Most RISC
architectures align on 8-word boundaries (double).
The default alignment type is int.
- Millions of instructions per second for this
processor (approximate). This is used to decide
certain unimportant timing issues such as how many
rays to trace before checking input in rview and
whether or not to optimize the color table in ximage
on 8-bit displays.
- Override for number of rays before flush in rview.
- Operating system has a strong Berkeley flavor, meaning
that bcopy() and bzero() are present but maybe memcpy()
and memset() are not. (See common/standard.h for other
things this flag affects.) Also affects certain system
calls, such as signal handling and resource tracking.
- The system has little RAM available, so size hash
tables and the like accordingly. Only allows for
small scene descriptions (32,256 primitives).
- This setting tells Radiance to use short floats
(4-bytes) throughout, which saves lots of memory
but can cause calculation inaccuracies in many
cases. Its use has been discontinued for this reason.
- The array size to use for caching occluders.
Setting this to 0 turns off this optimization.
Values greater than 20 use over 4 Kbytes per
light source, which can add up to a lot of
memory in scenes with many sources.
- Set the average surface reflectance for the purpose
of indirect irradiance calculations to R, where
R is a real number in the range (0,1.0). The
default value is 0.50 (50%).