<s>
3Delight	B-Application
,	O
also	O
known	O
as	O
3DelightNSI	O
,	O
is	O
3D	O
computer	O
graphics	O
software	O
that	O
runs	O
on	O
Microsoft	B-Application
Windows	I-Application
,	O
MacOS	B-Operating_System
and	O
Linux	B-Application
.	O
</s>
<s>
It	O
is	O
both	O
a	O
photorealistic	O
and	O
NPR	O
path	B-Algorithm
tracing	I-Algorithm
offline	O
renderer	O
based	O
on	O
its	O
NSI	O
API	O
and	O
on	O
OSL	O
.	O
</s>
<s>
It	O
also	O
provides	O
a	O
fully	O
distributed	O
cloud	B-Architecture
rendering	O
service	O
called	O
3Delight	B-Application
Cloud	B-Architecture
.	O
</s>
<s>
Work	O
on	O
3Delight	B-Application
started	O
in	O
1999	O
.	O
</s>
<s>
3Delight	B-Application
was	O
the	O
first	O
RenderMan-compliant	O
renderer	O
combining	O
the	O
REYES	O
algorithm	O
with	O
on-demand	O
ray	B-Algorithm
tracing	I-Algorithm
.	O
</s>
<s>
The	O
3Delight	B-Application
team	O
decided	O
to	O
make	O
it	O
available	O
free	O
of	O
charge	O
from	O
August	O
2000	O
to	O
March	O
2005	O
to	O
build	O
a	O
user	O
base	O
.	O
</s>
<s>
The	O
first	O
license	O
was	O
free	O
and	O
subsequent	O
licenses	O
cost	O
1,000	O
USD	O
per	O
two	O
thread	B-Operating_System
node	O
and	O
US$	O
1,500	O
per	O
four	O
thread	B-Operating_System
node	O
.	O
</s>
<s>
The	O
first	O
company	O
that	O
licensed	O
3Delight	B-Application
commercially	O
was	O
Rising	O
Sun	O
Pictures	O
in	O
early	O
2005	O
.	O
</s>
<s>
Until	O
version	O
10	O
(	O
2013	O
)	O
,	O
3Delight	B-Application
primarily	O
used	O
the	O
REYES	O
algorithm	O
but	O
was	O
also	O
capable	O
of	O
doing	O
ray	B-Algorithm
tracing	I-Algorithm
and	O
global	B-Algorithm
illumination	I-Algorithm
.	O
</s>
<s>
As	O
of	O
version	O
11	O
(	O
2014	O
)	O
,	O
3Delight	B-Application
primarily	O
uses	O
Path	B-Algorithm
Tracing	I-Algorithm
,	O
with	O
the	O
option	O
to	O
use	O
the	O
REYES	O
and	O
RayTracing	B-Algorithm
when	O
needed	O
.	O
</s>
<s>
The	O
renderer	O
is	O
fully	O
multi-threaded	B-Operating_System
,	O
supports	O
RenderMan	B-Application
Shading	I-Application
Language	I-Application
(	O
RSL	O
)	O
1.0/2.0	O
with	O
optimising	O
compiler	O
and	O
last	O
stage	O
JIT	O
compilation	O
.	O
</s>
<s>
3Delight	B-Application
also	O
supports	O
distributed	B-Operating_System
rendering	I-Operating_System
.	O
</s>
<s>
This	O
allows	O
for	O
accelerated	O
rendering	O
on	O
multi-CPU	O
hosts	O
or	O
environments	O
where	O
a	O
large	O
number	O
of	O
computers	O
are	O
joined	O
into	O
a	O
grid	B-Architecture
/	O
cloud	B-Architecture
.	O
</s>
<s>
3Delight	B-Application
also	O
supports	O
the	O
following	O
capabilities	O
,	O
which	O
are	O
not	O
part	O
of	O
any	O
capabilities	O
list	O
:	O
</s>
<s>
Memory	O
efficient	O
point	B-Algorithm
clouds	I-Algorithm
.	O
</s>
<s>
Like	O
brick	O
maps	O
,	O
point	B-Algorithm
clouds	I-Algorithm
are	O
organized	O
in	O
a	O
spatial	O
data	O
structure	O
and	O
are	O
loaded	O
lazily	O
,	O
keeping	O
the	O
memory	O
requirements	O
as	O
low	O
as	O
possible	O
.	O
</s>
<s>
Procedural	O
geometry	O
is	O
instanced	O
lazily	O
even	O
during	O
ray	B-Algorithm
tracing	I-Algorithm
,	O
keeping	O
the	O
memory	O
requirements	O
as	O
low	O
as	O
possible	O
.	O
</s>
<s>
The	O
gather( )	O
shadeop	O
can	O
be	O
used	O
on	O
point	B-Algorithm
clouds	I-Algorithm
and	O
to	O
generate	O
sample	O
distributions	O
from	O
(	O
high	O
dynamic	O
range	O
)	O
images	O
,	O
e.g.	O
</s>
<s>
for	O
easily	O
combining	O
photon	B-Application
mapping	I-Application
with	O
image-based	B-Algorithm
lighting	I-Algorithm
.	O
</s>
<s>
First	O
order	O
ray	B-Algorithm
differentials	I-Algorithm
on	O
any	O
ray	O
fired	O
from	O
within	O
a	O
shader	O
.	O
</s>
<s>
A	O
read/write	O
disk	O
cache	O
that	O
allows	O
the	O
renderer	O
to	O
take	O
strain	O
off	O
the	O
network	O
,	O
when	O
heavy	O
scene	O
data	O
needs	O
to	O
be	O
repeatedly	O
distributed	O
to	O
clients	B-Operating_System
on	O
a	O
render	B-Operating_System
farm	I-Operating_System
or	O
image	O
data	O
sent	O
back	O
from	O
such	O
clients	B-Operating_System
to	O
a	O
central	O
storage	O
server	O
.	O
</s>
<s>
A	O
C	O
API	O
that	O
allows	O
running	O
RenderMan	B-Application
Shading	I-Application
Language	I-Application
(	O
RSL	O
)	O
code	O
on	O
arbitrary	O
data	O
,	O
e.g.	O
</s>
<s>
Apple	B-Operating_System
Mac	I-Operating_System
OS	I-Operating_System
X	I-Operating_System
on	O
the	O
PowerPC	B-Architecture
and	O
x86	B-Operating_System
architectures	I-Operating_System
(	O
The	O
last	O
version	O
to	O
support	O
PPC	O
architecture	O
was	O
version	O
9	O
.	O
</s>
<s>
All	O
versions	O
from	O
10	O
up	O
are	O
Intel	B-Operating_System
x86	I-Operating_System
only	O
and	O
will	O
not	O
run	O
on	O
PowerPC	B-Architecture
Macs	O
.	O
)	O
</s>
<s>
The	O
renderer	O
comes	O
in	O
both	O
32-bit	O
and	O
64-bit	B-Device
versions	O
.	O
</s>
<s>
3Delight	B-Application
has	O
been	O
used	O
for	O
visual	O
effects	O
work	O
on	O
many	O
films	O
.	O
</s>
