<s>
Metal	O
is	O
a	O
low-level	O
,	O
low-overhead	O
hardware-accelerated	B-General_Concept
3D	O
graphic	O
and	O
compute	B-Operating_System
shader	I-Operating_System
API	B-General_Concept
created	O
by	O
Apple	O
,	O
debuting	O
in	O
iOS	B-Operating_System
8	I-Operating_System
.	O
</s>
<s>
Metal	O
combines	O
functions	O
similar	O
to	O
OpenGL	B-Application
and	O
OpenCL	B-Application
in	O
one	O
API	B-General_Concept
.	O
</s>
<s>
It	O
is	O
intended	O
to	O
improve	O
performance	O
by	O
offering	O
low-level	O
access	O
to	O
the	O
GPU	O
hardware	O
for	O
apps	O
on	O
iOS	B-Application
,	O
iPadOS	B-Operating_System
,	O
macOS	B-Application
,	O
and	O
tvOS	B-Operating_System
.	O
</s>
<s>
It	O
can	O
be	O
compared	O
to	O
low-level	O
APIs	B-General_Concept
on	O
other	O
platforms	B-Device
such	O
as	O
Vulkan	B-Application
and	O
DirectX	O
12	O
.	O
</s>
<s>
Metal	O
is	O
an	O
object-oriented	B-Language
API	B-General_Concept
that	O
can	O
be	O
invoked	O
using	O
the	O
Swift	B-Application
,	O
Objective-C	B-Language
or	O
C++17	B-Language
programming	O
languages	O
.	O
</s>
<s>
Full-blown	O
GPU	O
execution	O
is	O
controlled	O
via	O
the	O
Metal	B-Library
Shading	I-Library
Language	I-Library
.	O
</s>
<s>
Additionally	O
,	O
command	O
encoding	O
is	O
CPU	B-Device
independent	O
thus	O
applications	O
can	O
encode	O
commands	O
to	O
each	O
CPU	B-Device
thread	O
independently	O
.	O
</s>
<s>
Metal	O
improves	O
the	O
capabilities	O
of	O
GPGPU	B-Architecture
programming	O
by	O
using	O
compute	B-Operating_System
shaders	I-Operating_System
.	O
</s>
<s>
Metal	O
uses	O
a	O
specific	O
shading	B-Language
language	I-Language
based	O
on	O
C++14	B-Language
,	O
implemented	O
using	O
Clang	B-Application
and	O
LLVM	B-Application
.	O
</s>
<s>
Resources	O
can	O
be	O
allocated	O
on	O
the	O
CPU	B-Device
,	O
GPU	O
,	O
or	O
both	O
and	O
provides	O
facilities	O
to	O
update	O
and	O
synchronize	O
allocated	O
resources	O
.	O
</s>
<s>
On	O
macOS	B-Application
,	O
Metal	O
can	O
provide	O
application	O
developers	O
the	O
discretion	O
to	O
specify	O
which	O
GPU	O
to	O
execute	O
.	O
</s>
<s>
Application	O
developers	O
can	O
choose	O
between	O
the	O
low-power	O
integrated	O
GPU	O
of	O
the	O
CPU	B-Device
,	O
the	O
discrete	O
GPU	O
(	O
on	O
certain	O
MacBooks	O
and	O
Macs	B-Device
)	O
or	O
an	O
external	O
GPU	O
connected	O
through	O
Thunderbolt	O
.	O
</s>
<s>
Metal	O
has	O
been	O
available	O
since	O
June	O
2	O
,	O
2014	O
on	O
iOS	B-Operating_System
devices	I-Operating_System
powered	O
by	O
Apple	O
A7	O
or	O
later	O
,	O
and	O
since	O
June	O
8	O
,	O
2015	O
on	O
Macs	B-Device
(	O
2012	O
models	O
or	O
later	O
)	O
running	O
OS	B-Operating_System
X	I-Operating_System
El	I-Operating_System
Capitan	I-Operating_System
.	O
</s>
<s>
On	O
June	O
5	O
,	O
2017	O
,	O
at	O
WWDC	O
,	O
Apple	O
announced	O
the	O
second	O
version	O
of	O
Metal	O
,	O
to	O
be	O
supported	O
by	O
macOS	B-Operating_System
High	I-Operating_System
Sierra	I-Operating_System
,	O
iOS	B-Operating_System
11	I-Operating_System
and	O
tvOS	B-Operating_System
11	I-Operating_System
.	O
</s>
<s>
Metal	O
2	O
is	O
not	O
a	O
separate	O
API	B-General_Concept
from	O
Metal	O
and	O
is	O
supported	O
by	O
the	O
same	O
hardware	O
.	O
</s>
<s>
Metal	O
2	O
enables	O
more	O
efficient	O
profiling	O
and	O
debugging	O
in	O
Xcode	B-Operating_System
,	O
accelerated	O
machine	O
learning	O
,	O
lower	O
CPU	B-Device
workload	O
,	O
support	O
for	O
virtual	B-Application
reality	I-Application
on	O
macOS	B-Application
,	O
and	O
specificities	O
of	O
the	O
Apple	B-Device
A11	I-Device
GPU	O
,	O
in	O
particular	O
.	O
</s>
<s>
At	O
the	O
2020	O
WWDC	O
,	O
Apple	O
announced	O
the	O
migration	O
of	O
the	O
Mac	O
to	O
Apple	B-Device
silicon	I-Device
.	O
</s>
<s>
Macs	B-Device
using	O
Apple	B-Device
silicon	I-Device
will	O
feature	O
Apple	O
GPUs	O
with	O
a	O
feature	O
set	O
combining	O
what	O
was	O
previously	O
available	O
on	O
macOS	B-Application
and	O
iOS	B-Application
,	O
and	O
will	O
be	O
able	O
to	O
take	O
advantage	O
of	O
features	O
tailored	O
to	O
the	O
tile	O
based	O
deferred	O
rendering	O
(	O
TBDR	O
)	O
architecture	O
of	O
Apple	O
GPUs	O
.	O
</s>
<s>
At	O
the	O
2022	O
WWDC	O
,	O
Apple	O
announced	O
the	O
third	O
version	O
of	O
Metal	O
(	O
Metal	O
3	O
)	O
,	O
which	O
would	O
debut	O
with	O
the	O
release	O
of	O
macOS	B-Operating_System
Ventura	I-Operating_System
,	O
iOS	B-Operating_System
16	I-Operating_System
and	O
iPadOS	B-Operating_System
16	I-Operating_System
.	O
</s>
<s>
Also	O
announced	O
possibility	O
to	O
use	O
C/C	O
++	O
for	O
Metal	B-Library
API	I-Library
.	O
</s>
<s>
The	O
first	O
version	O
and	O
the	O
second	O
version	O
of	O
Metal	B-Library
API	I-Library
supports	O
the	O
following	O
hardware	O
and	O
software	O
stated	O
as	O
below	O
:	O
</s>
<s>
The	O
third	O
version	O
of	O
Metal	B-Library
API	I-Library
supports	O
the	O
following	O
hardware	O
and	O
software	O
stated	O
as	O
below	O
:	O
</s>
<s>
According	O
to	O
Apple	O
,	O
more	O
than	O
148,000	O
applications	O
use	O
Metal	O
directly	O
,	O
and	O
1.7	O
million	O
use	O
it	O
through	O
high-level	O
frameworks	B-Application
,	O
as	O
of	O
June	O
2017	O
.	O
macOS	B-Application
games	O
using	O
Metal	O
for	O
rendering	O
are	O
listed	O
below	O
.	O
</s>
<s>
TitleDeveloper	O
(	O
macOS	B-Application
version	O
)	O
Game	O
engineMacOS	O
release	O
date	O
(	O
OpenGL	B-Application
)	O
Metal-based	O
release	O
dateMetal	O
support	O
notesEVE	O
OnlineCCP	O
GamesN/ACivilization	O
VIAspyr	O
MediaLOREMetal	O
support	O
since	O
5	O
April	O
2019Batman	O
:	O
Arkham	O
CityFeral	O
InteractiveUnreal	O
Engine	O
3Metal	O
support	O
since	O
21	O
February	O
2019	O
with	O
v1.2Dota	O
2ValveSource	O
2MoltenVK	O
was	O
announced	O
on	O
.	O
</s>
<s>
The	O
option	O
to	O
use	O
this	O
became	O
available	O
on	O
.Quake	O
IIid	O
SoftwareQuake	O
II	O
engineA	O
port	O
using	O
MoltenVK	B-Operating_System
was	O
released	O
as	O
vkQuake2.Tomb	O
RaiderFeral	O
InteractiveFoundation	O
EngineMetal	O
support	O
with	O
v1.2	O
in	O
July	O
2019Rise	O
of	O
the	O
Tomb	O
RaiderFeral	O
InteractiveFoundation	O
EngineShadow	O
of	O
the	O
Tomb	O
RaiderFeral	O
InteractiveFoundation	O
EngineF1	O
2016Feral	O
Interactive	O
EGO	B-Application
Engine	I-Application
4.0Life	O
Is	O
Strange	O
2Feral	O
InteractiveUnreal	O
Engine	O
4Life	O
Is	O
Strange	O
:	O
Before	O
the	O
StormFeral	O
InteractiveUnity	O
EngineDivinity	O
:	O
Original	O
Sin	O
IIElverilsDivinity	O
Engine	O
2Baldur	O
's	O
Gate	O
IIIElverilsDivinity	O
Engine	O
4.0Metal	O
support	O
in	O
early	O
access	O
since	O
Company	O
of	O
Heroes	O
2Feral	O
InteractiveEssence	O
Engine	O
3Metal	O
support	O
since	O
HitmanFeral	O
InteractiveGlacier	O
2Sid	O
Meier	O
's	O
Railroads	O
!	O
Feral	O
InteractiveGamebryoMetal	O
support	O
since	O
Warhammer	O
40,000	O
:	O
Dawn	O
of	O
War	O
IIIFeral	O
InteractiveEssence	O
Engine	O
4Total	O
War	O
:	O
Rome	O
RemasteredFeral	O
InteractiveTW	O
Engine	O
2Total	O
War	O
:	O
Three	O
KingdomsFeral	O
InteractiveTW	O
Engine	O
3Total	O
War	O
:	O
WarhammerFeral	O
InteractiveTW	O
Engine	O
3Total	O
War	O
:	O
Warhammer	O
IIFeral	O
InteractiveTW	O
Engine	O
3Total	O
War	O
Saga	O
:	O
Thrones	O
of	O
BritanniaFeral	O
InteractiveTW	O
Engine	O
3Total	O
War	O
Saga	O
:	O
TroyFeral	O
InteractiveTW	O
Engine	O
3Medieval	O
II	O
:	O
Total	O
WarFeral	O
InteractiveTW	O
Engine	O
2Metal	O
support	O
since	O
25	O
October	O
2018Empire	O
:	O
Total	O
WarFeral	O
InteractiveTW	O
Engine	O
3Metal	O
support	O
since	O
16	O
December	O
2019Napoleon	O
:	O
Total	O
WarFeral	O
InteractiveTW	O
Engine	O
3Metal	O
support	O
since	O
25	O
October	O
2019	O
with	O
v1.2Total	O
War	O
:	O
Shogun	O
2Feral	O
InteractiveTW	O
Engine	O
3Metal	O
support	O
since	O
4	O
October	O
2019Total	O
War	O
:	O
Shogun	B-Application
2	I-Application
:	O
Fall	O
of	O
the	O
SamuraiFeral	O
InteractiveTW	O
Engine	O
3Metal	O
support	O
since	O
4	O
October	O
2019Bioshock	O
RemasteredFeral	O
InteractiveUnreal	O
Engine	O
2.5Bioshock	O
2	O
RemasteredFeral	O
InteractiveUnreal	O
Engine	O
2.5F1	O
2017Feral	O
Interactive	O
EGO	B-Application
Engine	I-Application
4.0Deus	O
Ex	O
:	O
Mankind	O
DividedFeral	O
InteractiveDawn	O
EngineDiRT	O
RallyFeral	O
Interactive	O
EGO	B-Application
Engine	I-Application
2.5Ballistic	O
OverkillAquiris	O
Game	O
StudioUnity	O
Engine	O
5BattleTechHarebrained	O
SchemesUnity	O
Engine	O
5Mafia	O
IIIAspyr	O
MediaIllusion	O
EngineWorld	O
of	O
WarcraftBlizzard	O
EntertainmentWoW	O
EngineMetal	O
support	O
since	O
August	O
2016StarcraftBlizzard	O
EntertainmentModified	O
Warcraft	O
II	O
engineMetal	O
support	O
since	O
with	O
v1.23.5StarCraft	O
IIBlizzard	O
EntertainmentSC2	O
EngineMetal	O
support	O
in	O
beta	O
since	O
Heroes	O
of	O
the	O
StormBlizzard	O
EntertainmentSC2	O
EngineMetal	O
support	O
in	O
beta	O
since	O
(	O
temporarily	O
removed	O
on	O
until	O
?	O
</s>
