<s>
Perl	B-Language
OpenGL	I-Language
(	O
POGL	B-Language
)	O
is	O
a	O
portable	O
,	O
compiled	O
wrapper	O
library	B-Library
that	O
allows	O
OpenGL	B-Application
to	O
be	O
used	O
in	O
the	O
Perl	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
POGL	B-Language
provides	O
support	O
for	O
most	O
OpenGL	B-Application
2.0	O
extensions	O
,	O
abstracts	O
operating	B-General_Concept
system	I-General_Concept
specific	O
proc	O
handlers	O
,	O
and	O
supports	O
OpenGL	B-Library
Utility	I-Library
Toolkit	I-Library
(	O
GLUT	O
)	O
,	O
a	O
simple	O
cross-platform	B-Operating_System
windowing	O
interface	O
.	O
</s>
<s>
POGL	B-Language
provides	O
additional	O
Perl-friendly	O
application	B-Application
programming	I-Application
interfaces	I-Application
(	O
API	B-Application
)	O
for	O
passing	O
and	O
returning	O
strings	O
and	O
arrays	O
.	O
</s>
<s>
The	O
primary	O
maintainer	O
of	O
Perl	B-Language
OpenGL	I-Language
is	O
Chris	O
Marshall	O
.	O
</s>
<s>
POGL	B-Language
is	O
used	O
as	O
the	O
OpenGL	B-Application
binding	O
for	O
the	O
3D	O
graphics	O
in	O
the	O
Perl	B-Language
Data	I-Language
Language	I-Language
(	O
PDL	O
)	O
.	O
</s>
<s>
The	O
POGL	B-Language
team	O
has	O
collaborated	O
with	O
the	O
ImageMagick	B-Language
team	O
to	O
add	O
PerlMagick	B-Language
APIs	B-Application
that	O
allow	O
GPUs	B-Architecture
and	O
ImageMagick	B-Language
to	O
share	O
cache	O
buffers	O
via	O
C	O
pointers	O
-	O
optimizing	O
performance	O
for	O
FBOs	O
and	O
VBOs	O
-	O
for	O
use	O
with	O
loading	O
and	O
saving	O
textures	O
and	O
GPGPU	B-Architecture
data	O
transfer	O
.	O
</s>
<s>
These	O
APIs	B-Application
have	O
been	O
added	O
to	O
ImageMagick	B-Language
6.3.5	O
:	O
</s>
<s>
CPAN	O
's	O
FFmpeg	O
module	O
may	O
be	O
used	O
with	O
POGL	B-Language
and	O
the	O
above	O
File::Magick	O
APIs	B-Application
to	O
map	O
video	O
to	O
OpenGL	B-Application
textures	O
.	O
</s>
<s>
General	O
Purpose	O
graphics	B-Architecture
processing	I-Architecture
unit	I-Architecture
(	O
GPU	B-Architecture
,	O
GPGPU	B-Architecture
)	O
processing	O
is	O
one	O
area	O
in	O
which	O
Perl	B-Language
can	O
be	O
compared	O
with	O
compiled	O
languages	O
in	O
performance	O
.	O
</s>
<s>
Based	O
on	O
their	O
own	O
benchmarks	O
,	O
Perl	B-Language
OpenGL	I-Language
developers	O
claim	O
that	O
there	O
are	O
no	O
significant	O
performance	O
differences	O
between	O
C	O
and	O
Perl	B-Language
(	O
via	O
POGL	B-Language
)	O
,	O
when	O
rendering	O
a	O
realtime	O
3D	O
animated	O
object	O
with	O
dynamically	O
generated	O
texturemaps	O
.	O
</s>
<s>
They	O
analyze	O
their	O
results	O
by	O
remarking	O
that	O
GPGPU	B-Architecture
vertex	O
shaders	O
can	O
execute	O
complex	O
C-like	O
code	O
on	O
large	O
arrays	O
of	O
data	O
,	O
rarely	O
touching	O
the	O
CPU	O
.	O
</s>
<s>
Perl	B-Language
OpenGL	I-Language
developers	O
claim	O
that	O
POGL	B-Language
performs	O
over	O
20%	O
faster	O
than	O
Python	B-Language
.	O
</s>
<s>
POGL	B-Language
provides	O
specialized	O
objects	O
that	O
enhance	O
Perl	B-Language
performance	O
.	O
</s>
<s>
POGL	B-Language
objects	O
store	O
data	O
as	O
typed	O
C	O
arrays	O
,	O
and	O
pass	O
data	O
between	O
APIs	B-Application
using	O
C	O
pointers	O
-	O
eliminating	O
the	O
need	O
to	O
copy/convert/cast	O
when	O
passing	O
data	O
between	O
interfaces	O
.	O
</s>
<s>
OGAs	O
store	O
OpenGL	B-Application
data	O
as	O
typed	O
C	O
arrays	O
.	O
</s>
<s>
OGAs	O
may	O
be	O
populated	O
by	O
C	O
pointer	O
,	O
Perl	B-Language
packed	O
arrays	O
(	O
strings	O
)	O
or	O
Perl	B-Language
arrays	O
.	O
</s>
<s>
OGAs	O
may	O
be	O
bound/mapped	O
to	O
VBOs	O
to	O
share	O
data	O
between	O
the	O
GPU	B-Architecture
and	O
Perl	B-Language
.	O
</s>
<s>
Accessor	O
methods	O
provide	O
a	O
means	O
to	O
get/set	O
array	O
elements	O
by	O
C	O
pointer	O
,	O
packed	O
arrays	O
or	O
Perl	B-Language
arrays	O
.	O
</s>
<s>
POGL	B-Language
is	O
a	O
compiled	O
module	O
,	O
and	O
may	O
be	O
used	O
in	O
conjunction	O
with	O
compiled	O
imaging	O
modules	O
(	O
such	O
as	O
ImageMagick	B-Language
)	O
for	O
loading/saving	O
data	O
arrays	O
(	O
textures	O
)	O
.	O
</s>
<s>
OGI	O
simplifies	O
loading/modifying/saving	O
OpenGL	B-Application
textures	O
,	O
FBOs	O
and	O
VBOs	O
.	O
</s>
<s>
OGI	O
provides	O
an	O
extensible	O
plug-in	O
architecture	O
to	O
support	O
new	O
imaging	O
libraries	O
:	O
OGI	O
supports	O
ImageMagick	B-Language
(	O
v6.3.5	O
or	O
newer	O
)	O
,	O
and	O
by	O
default	O
Targa	O
(	O
uncompressed	O
RGBA	O
files	O
)	O
.	O
</s>
<s>
OGI	O
provides	O
direct	O
C	O
pointer	O
access	O
to	O
ImageMagick	B-Language
's	O
image	O
cache	O
,	O
resulting	O
in	O
performance	O
improvement	O
in	O
transferring	O
images/data	O
between	O
the	O
GPU	B-Architecture
and	O
IM	O
.	O
</s>
<s>
The	O
OSG	O
module	O
abstracts	O
OpenGL	B-Application
APIs	B-Application
for	O
ARB	O
(	O
assembly	O
)	O
,	O
Cg	O
and	O
GLSL	O
shading	O
languages	O
.	O
</s>
<s>
$shdr	O
=	O
new	O
OpenGL::Shader( )	O
;	O
</s>
<s>
POGL	B-Language
provides	O
access	O
to	O
most	O
of	O
the	O
OpenGL	B-Application
APIs	B-Application
up	O
to	O
1.2	O
,	O
and	O
OpenGL	B-Application
extensions	O
,	O
such	O
as	O
Framebuffer	B-Library
Objects	I-Library
(	O
FBO	O
)	O
and	O
Vertex	B-Library
Buffer	I-Library
Objects	I-Library
(	O
VBO	O
)	O
.	O
</s>
