<s>
Clipmapping	B-Algorithm
is	O
a	O
method	O
of	O
clipping	B-Algorithm
a	O
mipmap	B-Data_Structure
to	O
a	O
subset	O
of	O
data	O
pertinent	O
to	O
the	O
geometry	O
being	O
displayed	O
.	O
</s>
<s>
This	O
is	O
useful	O
for	O
loading	O
as	O
little	O
data	O
as	O
possible	O
when	O
memory	B-General_Concept
is	O
limited	O
,	O
such	O
as	O
on	O
a	O
graphics	B-Architecture
processing	I-Architecture
unit	I-Architecture
.	O
</s>
<s>
The	O
technique	O
is	O
used	O
for	O
LODing	O
in	O
NVIDIA	O
’s	O
implementation	O
of	O
voxel	B-Algorithm
cone	I-Algorithm
tracing	I-Algorithm
.	O
</s>
