[ViewVC] Annotation of: radiance/ray/doc/notes/compile_switches

Here is a list of compile switches, used to customize Radiance code
for specific machines and users:

-DALIGN=(type)  Alignment type, machine-dependent.  Most RISC
                architectures align on 8-word boundaries (double).
                The default alignment type is int.

-DSPEED=(MIPS)  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 rvu and
                whether or not to optimize the color table in ximage
                on 8-bit displays.

-DWFLUSH=(rays) Override for number of rays before flush in rvu.

-DBSD           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.

-DSMLMEM        The system has little RAM available, so size hash
                tables and the like accordingly.  Only allows for
                small scene descriptions (32,256 primitives).

-DSMLFLT        This setting tells Radiance to use short floats
                (32 bits) throughout, which saves lots of memory
                but can cause calculation inaccuracies in many
                cases.  Its use has been discontinued for this reason.

-DSHADCACHE=N   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.

-DAVGREFL=R     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%).  This value indirectly
                controls the maximum number of ambient bounces,
                which can never be more than the log of the -ad
                setting times the log of AVGREFL.
Revision:	1.4
Committed:	Mon Jun 13 20:07:56 2005 UTC (18 years, 10 months ago) by greg
Branch:	MAIN
CVS Tags:	rad3R7P2, rad3R7P1
Changes since 1.3:	+0 -5 lines
Log Message:	Added -R option for pure Monte Carlo rendering, replacing -DMC compile option
#	User	Rev	Content
1	greg	1.1	Here is a list of compile switches, used to customize Radiance code
2			for specific machines and users:
3
4			-DALIGN=(type) Alignment type, machine-dependent. Most RISC
5			architectures align on 8-word boundaries (double).
6			The default alignment type is int.
7
8			-DSPEED=(MIPS) Millions of instructions per second for this
9			processor (approximate). This is used to decide
10			certain unimportant timing issues such as how many
11	greg	1.2	rays to trace before checking input in rvu and
12	greg	1.1	whether or not to optimize the color table in ximage
13			on 8-bit displays.
14
15	greg	1.2	-DWFLUSH=(rays) Override for number of rays before flush in rvu.
16	greg	1.1
17			-DBSD Operating system has a strong Berkeley flavor, meaning
18			that bcopy() and bzero() are present but maybe memcpy()
19			and memset() are not. (See common/standard.h for other
20			things this flag affects.) Also affects certain system
21			calls, such as signal handling and resource tracking.
22
23	greg	1.2	-DSMLMEM The system has little RAM available, so size hash
24			tables and the like accordingly. Only allows for
25			small scene descriptions (32,256 primitives).
26	greg	1.1
27			-DSMLFLT This setting tells Radiance to use short floats
28	greg	1.2	(32 bits) throughout, which saves lots of memory
29	greg	1.1	but can cause calculation inaccuracies in many
30			cases. Its use has been discontinued for this reason.
31	greg	1.2
32			-DSHADCACHE=N The array size to use for caching occluders.
33			Setting this to 0 turns off this optimization.
34			Values greater than 20 use over 4 Kbytes per
35			light source, which can add up to a lot of
36			memory in scenes with many sources.
37	greg	1.3
38			-DAVGREFL=R Set the average surface reflectance for the purpose
39			of indirect irradiance calculations to R, where
40			R is a real number in the range (0,1.0). The
41			default value is 0.50 (50%). This value indirectly
42			controls the maximum number of ambient bounces,
43			which can never be more than the log of the -ad
44			setting times the log of AVGREFL.