<s>
The	O
Warnock	B-Algorithm
algorithm	I-Algorithm
is	O
a	O
hidden	B-Algorithm
surface	I-Algorithm
algorithm	I-Algorithm
invented	O
by	O
John	O
Warnock	O
that	O
is	O
typically	O
used	O
in	O
the	O
field	O
of	O
computer	O
graphics	O
.	O
</s>
<s>
This	O
is	O
a	O
divide	B-Algorithm
and	I-Algorithm
conquer	I-Algorithm
algorithm	I-Algorithm
with	O
run-time	B-General_Concept
of	O
,	O
where	O
n	O
is	O
the	O
number	O
of	O
polygons	O
and	O
p	O
is	O
the	O
number	O
of	O
pixels	O
in	O
the	O
viewport	O
.	O
</s>
