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/usr/share/radiance/README is in radiance-materials 4R1+20120125-1.

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This directory contains common auxiliary files used by Radiance.  Files
with the ".cal" suffix specify procedural patterns, textures and coordinate
mappings.  Files with the ".fnt" suffix are font descriptions.  Files
with the ".oct" suffix are compiled scene descriptions for use in
instances.  Files with the ".mat" suffix contain the names of materials
used in the corresponding ".oct" file, for exclusion in the interreflection
calculation using the -aE rendering option.  Files with the ".rtm" suffix
contain a Radiance triangle mesh.  Files with the ".rad" suffix contain
Radiance scene geometry or references.  Files with the ".hdr" suffix
are images for patterns.  Note that most pictures are normalized to a
value of 1 rather than the more usual .5, and must be displayed with
the -e -1 option.  This is so the material reflectance given in the
scene description holds true.  (Suggested reflectances are given in
parentheses.)

For any published work using the CSAIL objects, the following acknowledgment
must be included:
	 "(textured) 3D model from the MIT CSAIL database"

adobe.cal		Texture for cracked adobe surface
ball.cal		Coordinate mapping for spheres
bark.cal		Procedural pattern for tree bark
brick.cal		Procedural pattern for brick
carpet.cal		Procedural pattern for carpeting
climit.cal		Color limit function for CSAIL texture atlases
covelight.cal		Calculation of reflected fluorescent light
cyl.cal			Coordinate mapping for cylinders
dirt.cal		Fractal dirt function
fisheye.cal		Coordinate mapping for fisheye patterns
glazing.cal		BRTDfunc definitions for coated glazings
globe.cal		Coordinate mapping for Earth.hdr
gloss.cal		Texture for glossy reflections
grating.cal		Specular transmission through a rectangular grating
lcp0.cal		Laser-cut panel model by Phillip Greenup
serraglaze.cal		Serraglaze panel, adapted from laser-cut panel file
jigglepic.cal		Coordinate jiggle for irregular natural patterns
marble.cal		Procedural marble pattern
orange.cal		Procedural orange texture
picture.cal		Common coordinate mapping for patterns
plink.cal		Definitions needed by materials in lib/material.rad
rayinit.cal		Initialization file and common definitions
rev.cal			Surface normal interpolation for genrev
skybright.cal		Sky brightness calculation for gensky
slate.cal		Procedural texture for slate stone
source.cal		Common coordinate mappings for light sources (ies2rad)
speckle.cal		Procedural speckle patterns for sand or granite
surf.cal		Surface normal interpolation for gensurf
tilt.cal		Tilt correction used by ies2rad
weave.cal		Procedural weave pattern
winxmit.cal		Approximation to window transmittance for sec. sources
woodpat.cal		Procedural woodgrain pattern
woodtex.cal		Procedural woodgrain texture

lamp.tab		Table of lamp types and their CIE color coordinates

helvet.fnt		Helvetica font (from Hershey set)
hexbit4x1.fnt		4 by 1 hex bit font for creating bitmaps

n.150.oct		Spray of needles used by sapling.oct
sapling.oct		A small pine tree sapling
tree.oct		A larger pine tree
tree.mat		Exclude material list for tree.oct and sapling.oct

bowl.rad		Snippet for CSAIL bowl
bowl.rtm		Radiance triangle mesh for CSAIL bowl
flowerpot.rad		Snippet for CSAIL flowerpot
flowerpot.rtm		Radiance triangle mesh for CSAIL flowerpot
goblet.rad		Snippet for CSAIL goblet
goblet.rtm		Radiance triangle mesh for CSAIL goblet
lion.rad		Snippet for CSAIL lion statue
lion.rtm		Radiance triangle mesh for CSAIL lion statue
thinker.rad		Snippet for CSAIL thinker statue
thinker.rtm		Radiance triangle mesh for CSAIL thinker statue
vase.rad		Snippet for CSAIL vase
vase.rtm		Radiance triangle mesh for CSAIL vase

alberta.hdr		A scanned vacation slide from Alberta, Canada
bowl.hdr		Texture atlas for CSAIL bowl
brick.hdr		A scanned brick pattern (staggered layout) (rho=16.3%)
brickweave.hdr		A scanned brick pattern (weave layout) (rho=19.8%)
cabin.hdr		A rendering of the cabin during winter
Earth.hdr		A picture of the Earth
forestfl.hdr		A scanned forest floor pattern
lion.hdr		Texture atlas for CSAIL lion statue
oakfloor.hdr		A scanned pattern of an oak floor
pine.hdr		A rendering of a small pine-like bush
pinebark.hdr		A scanned pattern of pine tree bark
richgrove.hdr		A photograph from Richardson's Grove in California
shingle.hdr		A scanned shake shingle pattern
thinker.hdr		Texture atlas for CSAIL thinker statue
tulips.hdr		A rendering of a tulip sculpture
vase.hdr		Texture atlas for CSAIL vase

tregsamp.dat		64 ray samples each for Tregenza patches 0-145

source/			Directory for light sources of different manufacturers

lib/arch.map		Default material mapping for arch2rad
lib/arch.mat		Default materials for arch2rad
lib/coord		Radiance description of a coordinate system
lib/gamma.hdr		Picture for monitor gamma determination
lib/macbeth_spec.hdr	Picture showing Macbeth color checker colors
lib/material.rad	Library of RADIANCE materials from ADELINE package
lib/rgbw.hdr		Picture with red, green, blue and white for mon. calib.
lib/testimg.hdr		Picture running through positive and negative primaries
lib/testroom		Small test room used by objpict and objview

meta/			Directory with library files for metafile 2-d graphics