<s>
Mesa	B-Application
,	O
also	O
called	O
Mesa3D	B-Application
and	O
The	O
Mesa	B-Application
3D	I-Application
Graphics	B-Library
Library	I-Library
,	O
is	O
an	O
open	B-Application
source	I-Application
implementation	O
of	O
OpenGL	B-Application
,	O
Vulkan	B-Application
,	O
and	O
other	O
graphics	B-Library
API	I-Library
specifications	O
.	O
</s>
<s>
Mesa	B-Application
translates	O
these	O
specifications	O
to	O
vendor-specific	O
graphics	O
hardware	B-Application
drivers	I-Application
.	O
</s>
<s>
Its	O
most	O
important	O
users	O
are	O
two	O
graphics	O
drivers	O
mostly	O
developed	O
and	O
funded	O
by	O
Intel	O
and	O
AMD	O
for	O
their	O
respective	O
hardware	O
(	O
AMD	O
promotes	O
their	O
Mesa	B-Application
drivers	O
Radeon	O
and	O
RadeonSI	O
over	O
the	O
deprecated	O
AMD	B-Application
Catalyst	I-Application
,	O
and	O
Intel	O
has	O
only	O
supported	O
the	O
Mesa	B-Application
driver	O
)	O
.	O
</s>
<s>
Proprietary	O
graphics	O
drivers	O
(	O
e.g.	O
,	O
Nvidia	B-Application
GeForce	I-Application
driver	I-Application
and	O
Catalyst	O
)	O
replace	O
all	O
of	O
Mesa	B-Application
,	O
providing	O
their	O
own	O
implementation	O
of	O
a	O
graphics	B-Library
API	I-Library
.	O
</s>
<s>
An	O
open-source	B-Application
effort	O
to	O
write	O
a	O
Mesa	B-Application
Nvidia	B-Application
driver	O
called	O
Nouveau	B-Application
is	O
developed	O
mostly	O
by	O
the	O
community	O
.	O
</s>
<s>
Besides	O
3D	O
applications	O
such	O
as	O
games	O
,	O
modern	O
display	O
servers	O
(	O
org	B-Application
's	I-Application
Glamor	I-Application
or	O
Wayland	B-Language
's	O
Weston	B-Application
)	O
use	O
OpenGL/EGL	O
;	O
therefore	O
all	O
graphics	O
typically	O
go	O
through	O
Mesa	B-Application
.	O
</s>
<s>
Mesa	B-Application
is	O
hosted	O
by	O
freedesktop.org	B-Application
and	O
was	O
initiated	O
in	O
August	O
1993	O
by	O
Brian	O
Paul	O
,	O
who	O
is	O
still	O
active	O
in	O
the	O
project	O
.	O
</s>
<s>
Mesa	B-Application
was	O
subsequently	O
widely	O
adopted	O
and	O
now	O
contains	O
numerous	O
contributions	O
from	O
various	O
individuals	O
and	O
corporations	O
worldwide	O
,	O
including	O
from	O
the	O
graphics	O
hardware	O
manufacturers	O
of	O
the	B-Library
Khronos	I-Library
Group	I-Library
that	O
administer	O
the	O
OpenGL	B-Application
specification	O
.	O
</s>
<s>
For	O
Linux	B-Application
,	O
development	O
has	O
also	O
been	O
partially	O
driven	O
by	O
crowdfunding	O
.	O
</s>
<s>
Mesa	B-Application
is	O
known	O
as	O
housing	O
implementations	O
of	O
graphic	O
APIs	B-Application
.	O
</s>
<s>
Historically	O
the	O
main	O
API	B-Application
that	O
Mesa	B-Application
has	O
implemented	O
is	O
OpenGL	B-Application
,	O
along	O
with	O
other	O
Khronos	B-Library
Group	I-Library
related	O
specifications	O
(	O
like	O
OpenVG	B-Library
,	O
OpenGL	B-Application
ES	I-Application
or	O
recently	O
EGL	B-Application
)	O
.	O
</s>
<s>
But	O
Mesa	B-Application
can	O
implement	O
other	O
APIs	B-Application
and	O
indeed	O
it	O
did	O
with	O
Glide	B-Operating_System
(	O
deprecated	O
)	O
and	O
Direct3D	B-Application
9	O
since	O
July	O
2013	O
.	O
</s>
<s>
Mesa	B-Application
is	O
also	O
not	O
specific	O
to	O
Unix-like	O
operating	B-General_Concept
systems	I-General_Concept
:	O
on	O
Windows	O
for	O
example	O
,	O
Mesa	B-Application
provides	O
an	O
OpenGL	B-Application
API	B-Application
over	O
DirectX	O
.	O
</s>
<s>
Mesa	B-Application
implements	O
a	O
translation	O
layer	O
between	O
a	O
graphics	B-Library
API	I-Library
such	O
as	O
OpenGL	B-Application
and	O
the	O
graphics	O
hardware	B-Application
drivers	I-Application
in	O
the	O
operating	B-Operating_System
system	I-Operating_System
kernel	I-Operating_System
.	O
</s>
<s>
The	O
supported	O
version	O
of	O
the	O
different	O
graphic	O
APIs	B-Application
depends	O
on	O
the	O
driver	O
,	O
because	O
each	O
hardware	B-Application
driver	I-Application
has	O
its	O
own	O
implementation	O
(	O
and	O
therefore	O
status	O
)	O
.	O
</s>
<s>
Mesa	B-Application
maintains	O
a	O
support	O
matrix	O
with	O
the	O
status	O
of	O
the	O
current	O
OpenGL	B-Application
conformance	O
visualized	O
at	O
.	O
</s>
<s>
Mesa	B-Application
10	O
complies	O
with	O
OpenGL	B-Application
3.3	O
for	O
Intel	O
,	O
AMD/ATI	O
,	O
and	O
Nvidia	B-Application
GPU	B-Architecture
hardware	O
.	O
</s>
<s>
Mesa	B-Application
11	O
was	O
announced	O
with	O
some	O
drivers	O
being	O
OpenGL	B-Application
4.1	O
compliant	O
.	O
</s>
<s>
Mesa	B-Application
12	O
contains	O
OpenGL	B-Application
4.2	O
and	O
4.3	O
and	O
Intel	O
Vulkan	B-Application
1.0	O
support	O
.	O
</s>
<s>
Mesa	B-Application
13	O
brought	O
Intel	O
support	O
for	O
OpenGL	B-Application
4.4	O
and	O
4.5	O
(	O
all	O
Features	O
supported	O
for	O
Intel	O
Gen	O
8+	O
,	O
Radeon	O
GCN	O
,	O
Nvidia	B-Application
(	O
Fermi	O
,	O
Kepler	O
)	O
,	O
but	O
no	O
Khronos-Test	O
for	O
4.5-Label	O
)	O
and	O
experimental	O
AMD	O
Vulkan	B-Application
1.0	O
support	O
through	O
the	O
community	O
driver	O
RADV	O
.	O
</s>
<s>
OpenGL	B-Application
ES	I-Application
3.2	O
is	O
possible	O
with	O
Intel	O
Skylake	O
(	O
Gen9	O
)	O
.	O
</s>
<s>
Ready	O
features	O
are	O
certified	O
OpenGL	B-Application
4.5	O
,	O
OpenGL	B-Application
4.5	O
for	O
Intel	O
Haswell	O
,	O
OpenGL	B-Application
4.3	O
for	O
NVidia	B-Application
Maxwell	O
and	O
Pascal	O
(	O
GM107+	O
)	O
.	O
</s>
<s>
Huge	O
performance	O
gain	O
was	O
measured	O
with	O
Maxwell	O
1	O
(	O
GeForce	B-Application
GTX	I-Application
750	O
Ti	O
and	O
more	O
with	O
GM1xx	O
)	O
.	O
</s>
<s>
Maxwell-2-Cards	O
(	O
GeForce	B-Application
GTX	I-Application
980	O
and	O
more	O
with	O
GM2xx	O
)	O
are	O
underclocked	O
without	O
NVidia	B-Application
information	O
.	O
</s>
<s>
The	O
Khronos	B-Library
CTS	O
test	O
suite	O
for	O
OpenGL	B-Application
4.4	O
,	O
4.5	O
and	O
OpenGL	B-Application
ES	I-Application
3.0	O
+	O
is	O
in	O
now	O
(	O
2017-01-24	O
)	O
Open	B-Application
Source	I-Application
and	O
all	O
tests	O
for	O
Mesa	B-Application
13	O
and	O
17	O
are	O
now	O
possible	O
without	O
costs	O
.	O
</s>
<s>
OpenGL	B-Application
4.2	O
+	O
for	O
Intel	O
Ivy	O
Bridge	O
and	O
OpenGL	B-Application
3.3	O
+	O
for	O
Intel	O
Open	O
SWR	O
Rasterizer	O
are	O
2	O
of	O
the	O
highlights	O
.	O
</s>
<s>
Note	O
that	O
due	O
to	O
the	O
modularized	O
nature	O
of	O
OpenGL	B-Application
,	O
Mesa	B-Application
can	O
actually	O
support	O
extensions	O
from	O
newer	O
versions	O
of	O
OpenGL	B-Application
without	O
claiming	O
full	O
support	O
for	O
such	O
versions	O
.	O
</s>
<s>
For	O
example	O
,	O
in	O
July	O
2016	O
,	O
Mesa	B-Application
supported	O
OpenGL	B-Application
ES	I-Application
3.1	O
but	O
also	O
all	O
OpenGL	B-Application
ES	I-Application
3.2	O
extensions	O
except	O
for	O
five	O
,	O
as	O
well	O
as	O
a	O
number	O
of	O
extensions	O
not	O
part	O
of	O
any	O
OpenGL	B-Application
or	O
OpenGL	B-Application
ES	I-Application
version	O
.	O
</s>
<s>
An	O
open	O
question	O
for	O
Mesa	B-Application
and	O
Linux	B-Application
is	O
High	O
Dynamic	O
Range	O
(	O
HDR	O
)	O
.	O
</s>
<s>
3rd	O
Version	O
17.2	O
is	O
available	O
since	O
September	O
2017	O
with	O
some	O
new	O
OpenGL	B-Application
4.6	O
features	O
and	O
velocity	O
improvements	O
in	O
3D	O
for	O
Intel	O
and	O
AMD	O
.	O
</s>
<s>
Only	O
1.4	O
%	O
of	O
Tests	O
fail	O
for	O
OpenGL	B-Application
4.5	O
in	O
Nouveau	B-Application
for	O
Kepler	O
.	O
</s>
<s>
OpenGL	B-Application
4.6	O
is	O
nearly	O
fully	O
available	O
(	O
Spir-V	B-Application
is	O
not	O
ready	O
)	O
.	O
</s>
<s>
AMD	O
Vulkan	B-Application
Driver	O
RADV	O
is	O
now	O
fully	O
conformant	O
in	O
Khronos-Test	O
.	O
</s>
<s>
Full	O
OpenGL	B-Application
4.6	O
support	O
is	O
not	O
ready	O
,	O
but	O
many	O
features	O
and	O
improvements	O
were	O
successfully	O
tested	O
in	O
RC3	O
.	O
</s>
<s>
New	O
is	O
support	O
for	O
Intel	B-Device
Cannon	I-Device
Lake	I-Device
and	O
AMD	B-Device
Vega	I-Device
with	O
actual	O
Linux	B-Application
Version	O
.	O
</s>
<s>
AMD	O
Evergreen	O
Chips	O
(	O
RV800	O
or	O
R900	O
)	O
are	O
near	O
OpenGL	B-Application
4.5	O
support	O
.	O
</s>
<s>
Old	O
AMD	O
R600	O
or	O
RV700	O
Chips	O
can	O
only	O
support	O
OpenGL	B-Application
3.3	O
with	O
some	O
features	O
of	O
OpenGL	B-Application
4.x	O
.	O
</s>
<s>
Freedreno	O
is	O
the	O
Driver	O
for	O
Adreno	O
Hardware	O
and	O
near	O
OpenGL	B-Application
3.3	O
support	O
.	O
</s>
<s>
Target	O
is	O
Vulkan	B-Application
1.1.72	O
in	O
Intel	O
ANV	O
and	O
AMD	O
RADV	O
driver	O
.	O
</s>
<s>
OpenGL	B-Application
4.6	O
with	O
spir-V	B-Application
is	O
also	O
main	O
target	O
.	O
</s>
<s>
Permanent	O
work	O
is	O
possible	O
completion	O
of	O
Features	O
and	O
Optimization	O
of	O
drivers	O
for	O
older	O
hardware	O
like	O
AMD	O
R600/Evergreen	O
,	O
Nvidia	B-Application
Tesla	O
and	O
before	O
,	O
Fermi	O
,	O
Kepler	O
or	O
Intel	O
Sandybridge	O
,	O
Ivybridge	O
,	O
Haswell	O
or	O
Broadwell	O
.	O
</s>
<s>
ARM	O
Architecture	O
made	O
also	O
great	O
improvements	O
in	O
Adreno	O
3xx/4xx/5xx	O
and	O
Broadwell	O
VC4/VC5	O
for	O
Raspi	O
with	O
main	O
target	O
OpenGL	B-Application
ES	I-Application
.	O
</s>
<s>
OpenGL	B-Application
4.6	O
with	O
spir-V	B-Application
and	O
Vulkan	B-Application
1.1.80	O
are	O
in	O
WIP	O
.	O
</s>
<s>
The	O
soft	O
Driver	O
for	O
virtual	O
machines	O
VIRGL	O
is	O
ready	O
for	O
OpenGL	B-Application
4.3	O
and	O
OpenGL	B-Application
ES	I-Application
3.2	O
.	O
</s>
<s>
RadeonSI	O
is	O
also	O
ready	O
for	O
OpenGL	B-Application
ES	I-Application
3.2	O
.	O
</s>
<s>
ASTC	O
Texture	O
Compression	O
Support	O
and	O
Compatibility	O
Modus	O
Support	O
for	O
OpenGL	B-Application
4.4	O
(	O
3.1	O
in	O
18.1	O
)	O
are	O
other	O
highlights	O
in	O
RadeonSI	O
for	O
AMD	O
GCN	O
Cards	O
.	O
</s>
<s>
New	O
Vulkan	B-Application
1.1	O
and	O
more	O
features	O
for	O
Intel	O
and	O
AMD	O
are	O
available	O
.	O
</s>
<s>
See	O
more	O
Details	O
for	O
Vulkan	B-Application
in	O
Mesamatrix	O
.	O
</s>
<s>
Full	O
support	O
of	O
OpenGL	B-Application
4.6	O
is	O
not	O
ready	O
.	O
</s>
<s>
Full	O
support	O
of	O
OpenGL	B-Application
4.6	O
is	O
not	O
ready	O
,	O
but	O
many	O
improvements	O
on	O
this	O
way	O
are	O
in	O
all	O
drivers	O
.	O
</s>
<s>
Transition	O
of	O
TGSI	B-Language
to	O
NIR	O
is	O
here	O
one	O
main	O
Feature	O
on	O
way	O
to	O
OpenGL	B-Application
4.6	O
with	O
Spir-V	B-Application
and	O
more	O
OpenCL	B-Application
.	O
</s>
<s>
OpenGL	B-Application
4.6	O
is	O
Beta	O
ready	O
for	O
new	O
Intel	O
Iris	O
Driver	O
.	O
</s>
<s>
OpenGL	B-Application
4.6	O
is	O
ready	O
for	O
Intel	O
i965	O
and	O
optional	O
for	O
new	O
Iris	O
Driver	O
.	O
</s>
<s>
Vulkan	B-Application
1.2	O
is	O
ready	O
for	O
AMD	O
RADV	O
and	O
Intel	O
ANV	O
.	O
</s>
<s>
RadeonSI	O
driver	O
switched	O
to	O
using	O
NIR	O
by	O
default	O
,	O
instead	O
of	O
TGSI	B-Language
.	O
</s>
<s>
Zink	O
is	O
a	O
new	O
virtual	O
driver	O
for	O
OpenGL	B-Application
over	O
Vulkan	B-Application
.	O
</s>
<s>
OpenGL	B-Application
3.0	O
for	O
Zink	O
is	O
one	O
new	O
feature	O
.	O
</s>
<s>
LLVMpipe	O
will	O
support	O
OpenGL	B-Application
4.3	O
+	O
(	O
4.5	O
+	O
in	O
20.3	O
)	O
.	O
</s>
<s>
Shared	O
virtual	O
memory	O
is	O
possible	O
for	O
OpenCL	B-Application
in	O
Nouveau	B-Application
with	O
Pascal	O
and	O
higher	O
.	O
</s>
<s>
4th	O
Version	O
of	O
2020	O
is	O
20.3	O
.	O
v3d	O
and	O
v3dv	O
are	O
new	O
drivers	O
for	O
OpenGL	B-Application
and	O
Vulkan	B-Application
1.0	O
with	O
Broadcom	O
hardware	O
like	O
Raspberry	O
Pi	O
4	O
.	O
</s>
<s>
OpenCL	B-Application
1.2	O
is	O
full	O
supported	O
in	O
clover	O
module	O
.	O
</s>
<s>
Zink	O
support	O
OpenGL	B-Application
3.3	O
+	O
.	O
</s>
<s>
LLVMpipe	O
virtual	O
driver	O
support	O
now	O
OpenGL	B-Application
4.5	O
+	O
with	O
4.6	O
in	O
view	O
.	O
</s>
<s>
VALLIUM	O
as	O
Vulkan	B-Application
Tree	O
of	O
LLVMpipe	O
is	O
merged	O
.	O
</s>
<s>
In	O
Mesa	B-Application
21.0	O
d3d12	O
will	O
be	O
merged	O
with	O
OpenGL	B-Application
3.0	O
to	O
3.3	O
.	O
</s>
<s>
Microsoft	O
and	O
Collabora	O
develops	O
new	O
emulation	O
d3d12	O
in	O
WSL2	O
to	O
Windows	O
10	O
with	O
Direct	B-Application
3D	I-Application
12	O
.	O
</s>
<s>
OpenCL	B-Application
1.2	O
is	O
also	O
target	O
in	O
d3d12	O
.	O
</s>
<s>
An	O
acceleration	O
of	O
factor	O
2	O
to	O
5	O
is	O
done	O
in	O
Benchmark	O
SPECviewperf	O
with	O
improved	O
OpenGL	B-Application
Code	O
.	O
</s>
<s>
Many	O
Mesa	B-Application
21.0	O
features	O
improves	O
performance	O
.	O
</s>
<s>
Mesa	B-Application
21.1	O
is	O
second	O
release	O
of	O
year	O
2021	O
.	O
</s>
<s>
OpenGL	B-Application
4.6	O
+	O
and	O
OpenGL	B-Application
ES	I-Application
3.1	O
+	O
is	O
available	O
for	O
Zink	O
.	O
</s>
<s>
Qualcomm	O
Turnip	O
reaches	O
Vulkan	B-Application
1.1	O
+	O
and	O
software	O
emulation	O
Lavapipe	O
Vulkan	B-Application
1.1	O
+	O
.	O
</s>
<s>
Google	B-Application
VirtIO	O
GPU	B-Architecture
Driver	O
Venus	O
with	O
Vulkan	B-Application
1.2	O
+	O
is	O
merged	O
in	O
experimental	O
state	O
with	O
low	O
performance	O
in	O
mesa	B-Application
main	O
tree	O
.	O
</s>
<s>
Mesa	B-Application
21.2	O
is	O
third	O
release	O
of	O
year	O
2021	O
.	O
</s>
<s>
Google	B-Application
Virtual	O
Vulkan	B-Application
IO	O
Driver	O
Venus	O
will	O
be	O
official	O
introduced	O
with	O
full	O
Vulkan	B-Application
1.2	O
+	O
support	O
(	O
more	O
mesamatrix	O
)	O
.	O
</s>
<s>
ARM	O
Panfrost	O
:	O
OpenGL	B-Application
ES	I-Application
3.1	O
+	O
Support	O
is	O
available	O
and	O
panVK	O
is	O
the	O
new	O
Vulkan	B-Application
Driver	O
.	O
</s>
<s>
Vulkan	B-Application
1.3	O
is	O
available	O
for	O
Intel	O
Anvil	O
and	O
AMD	O
RADV	O
.	O
</s>
<s>
Microsoft	O
introduces	O
new	O
driver	O
„Dozen	O
“	O
for	O
WSL	O
2	O
in	O
early	O
development	O
stage	O
as	O
Vulkan	B-Application
over	O
d3d12	O
in	O
Mesa	B-Application
22.1	O
.	O
</s>
<s>
RustiCL	O
is	O
available	O
at	O
22.3	O
with	O
official	O
OpenCL	B-Application
3.0	O
Conformance	O
for	O
Intel	O
XE	O
Graphics	O
.	O
</s>
<s>
A	O
main	O
development	O
target	O
of	O
Mesa	B-Application
23.0	O
was	O
ray	O
tracing	O
for	O
Vulkan	B-Application
.	O
</s>
<s>
Microsoft	O
develops	O
dozen	O
driver	O
for	O
Vulkan	B-Application
in	O
WSL	O
.	O
</s>
<s>
Vulkan	B-Application
1.2	O
+	O
will	O
be	O
available	O
in	O
Mesa	B-Application
23.1	O
.	O
</s>
<s>
Mesa	B-Application
Version	O
First	O
Release	O
Date	O
Last	O
update	O
Vulkan	B-Application
OpenCL	B-Application
OpenGL	B-Application
OpenGL	B-Application
ES	I-Application
OpenVG	B-Library
EGL	B-Application
GLX	B-Device
Direct3D	B-Application
1.3.2462023-03-31	O
3.02020-11-30	O
4.62017-07-31	O
3.2.62019-07-10	O
1.12008-12-03	O
1.52014-03-19	O
1.42005-12-16	O
122015-07-29	O
2023-02-23	O
23.0.21.3.232	O
:	O
1.3	O
+	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
,	O
Lavapipe	O
,	O
Google	B-Application
Venus	O
)	O
,	O
1.1	O
+	O
(	O
Qualcomm	O
Turnip	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
,	O
ARM	O
Mali	O
PanVK	O
)	O
1.0	O
,	O
1.1	O
,	O
1.2	O
(	O
full	O
support	O
)	O
,	O
3.0	O
(	O
wip	O
,	O
some	O
functions	O
in	O
21.1	O
)	O
,	O
OpenCL	B-Application
3.0	O
with	O
new	O
RustiCL	O
for	O
AMD	O
GCN	O
and	O
Intel	O
Xe	O
(	O
Mesa	B-Application
22.3	O
+	O
)	O
,	O
AMD	O
R600	O
,	O
Nvidia	B-Application
Kepler+	O
(	O
Mesa	B-Application
23.1	O
+	O
)	O
4.6	O
(	O
19.3	O
:	O
Intel	O
Gen	O
8+	O
,	O
20.0	O
:	O
AMD	O
GCN	O
,	O
21.1	O
:	O
Zink	O
,	O
llvmpipe	O
,	O
21.2	O
:	O
Intel	O
Gen	O
7.5	O
)	O
3.2	O
(	O
20.3	O
:	O
Intel	O
i965	O
,	O
AMD	O
radeonsi	O
,	O
llvmpipe	O
,	O
VirGL	O
,	O
freedreno	O
,	O
Zink	O
(	O
21.3	O
)	O
;	O
3.1	O
:	O
AMD	O
r600	O
,	O
Nvidia	B-Application
nvC0	O
,	O
softpipe	O
,	O
Broadcom	O
v3d	O
,	O
ARM	O
Panfrost	O
(	O
21.3	O
)	O
,	O
d3d12	O
(	O
22.0	O
)	O
rowspan	O
=	O
"	O
30	O
"	O
1.5	O
1.4	O
9.0c	O
2022-11-30	O
22.3.71.3.225	O
:	O
mostly	O
equal	O
to	O
23.0	O
2022-09-21	O
22.2.51.3.217	O
:	O
1.3	O
+	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
,	O
Lavapipe	O
)	O
,	O
1.2	O
+	O
(	O
Google	B-Application
Venus	O
)	O
,	O
1.1	O
+	O
(	O
Qualcomm	O
Turnip	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
,	O
ARM	O
Mali	O
PanVK	O
)	O
2022-05-20	O
22.1.71.3.211	O
:	O
1.3	O
+	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
,	O
Lavapipe	O
)	O
,	O
1.2	O
+	O
(	O
Google	B-Application
Venus	O
)	O
,	O
1.1	O
+	O
(	O
Qualcomm	O
Turnip	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
,	O
ARM	O
Mali	O
PanVK	O
)	O
2022-03-09	O
22.0.51.3.204	O
:	O
1.3	O
+	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
,	O
1.2	O
+	O
(	O
Google	B-Application
Venus	O
)	O
,	O
1.1	O
+	O
(	O
Lavapipe	O
,	O
Qualcomm	O
Turnip	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
,	O
ARM	O
Mali	O
PanVK	O
)	O
2021-11-17	O
21.3.91.2.190	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
,	O
Google	B-Application
Venus	O
,	O
Lavapipe	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
)	O
,	O
1.1	O
+	O
(	O
Qualcomm	O
Turnip	O
)	O
2021-08-04	O
21.2.61.2.175	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
,	O
Google	B-Application
Venus	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
)	O
,	O
1.1	O
+	O
(	O
Lavapipe	O
,	O
Qualcomm	O
Turnip	O
)	O
2021-05-05	O
21.1.8	O
1.2.168	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
)	O
,	O
1.1	O
+	O
(	O
Lavapipe	O
,	O
Qualcomm	O
Turnip	O
)	O
2021-03-11	O
21.0.31.2.162	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
)	O
2020-12-03	O
20.3.51.2.158	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
,	O
Broadcom	O
v3dv	O
)	O
2020-09-28	O
20.2.6	O
1.2.145	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
)	O
1.0	O
,	O
1.1	O
,	O
1.2	O
(	O
WIP	O
)	O
some	O
failed	O
conformance	O
tests	O
2020-05-27	O
20.1.10	O
1.2.139	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
,	O
1.0	O
+	O
(	O
AMD	O
GCN1	O
)	O
2020-02-19	O
20.0.81.2	O
+	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
2019-12-11	O
19.3.51.1	O
+	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
(	O
19.1	O
:	O
1.1.104	O
19.0	O
:	O
1.1.102	O
,	O
18.3	O
:	O
1.1.90	O
,	O
18.2	O
:	O
1.1.84	O
)	O
2019-09-25	O
19.2.8	O
4.5	O
2019-06-11	O
19.1.8	O
2019-03-13	O
19.0.8	O
2018-12-07	O
18.3.6	O
2018-09-07	O
18.2.8	O
2018-05-18	O
18.1.9	O
1.1	O
(	O
Intel	O
Gen8+	O
,	O
AMD	O
GCN	O
Gen2+	O
)	O
(	O
1.1.73	O
)	O
2018-03-27	O
18.0.5	O
1.0	O
+	O
(	O
1.0.66	O
)	O
2017-12-08	O
17.3.9	O
1.0	O
(	O
PC	O
:	O
ANV	O
Intel	O
Gen7+	O
Ivy	O
Bridge	O
,	O
RADV	O
AMD	O
GCN	O
only	O
)	O
(	O
header	O
:	O
17.3	O
:	O
1.0.63	O
,	O
17.2	O
:	O
1.0.54	O
,	O
17.1	O
:	O
1.0.42	O
,	O
17.0	O
:	O
1.0.38	O
,	O
13.0	O
:	O
1.0.6	O
,	O
12.0	O
:	O
1.0.3	O
)	O
in	O
dev	O
.	O
</s>
<s>
The	B-Library
Khronos	I-Library
Group	I-Library
officially	O
announced	O
Vulkan	B-Application
API	I-Application
in	O
March	O
2015	O
,	O
and	O
officially	O
released	O
Vulkan	B-Application
1.0	O
on	O
16	O
February	O
2016	O
.	O
</s>
<s>
Vulkan	B-Application
breaks	O
compatibility	O
with	O
OpenGL	B-Application
and	O
completely	O
abandons	O
its	O
monolithic	O
state	B-Architecture
machine	I-Architecture
concept	O
.	O
</s>
<s>
The	O
developers	O
of	O
Gallium3D	O
called	O
Vulkan	B-Application
to	O
be	O
something	O
along	O
the	O
lines	O
of	O
Gallium3D	O
2.0	O
–	O
Gallium3D	O
separates	O
the	O
code	O
that	O
implements	O
the	O
OpenGL	B-Application
state	B-Architecture
machine	I-Architecture
from	O
the	O
code	O
that	O
is	O
specific	O
to	O
the	O
hardware	O
.	O
</s>
<s>
Version	O
1.3	O
is	O
immediately	O
available	O
with	O
Mesa	B-Application
22.0	O
.	O
</s>
<s>
Hardware	O
with	O
support	O
of	O
OpenGL	B-Application
ES	I-Application
3.1	O
should	O
run	O
at	O
Vulkan	B-Application
Level	O
1.3	O
and	O
before	O
.	O
</s>
<s>
As	O
Gallium3D	O
ingests	O
TGSI	B-Language
,	O
Vulkan	B-Application
ingests	O
SPIR-V	B-Application
(	O
Standard	B-Application
Portable	I-Application
Intermediate	I-Application
Representation	I-Application
version	O
"	O
V	O
"	O
as	O
in	O
"	O
Vulkan	B-Application
"	O
)	O
.	O
</s>
<s>
Intel	O
released	O
their	O
implementation	O
of	O
a	O
Vulkan	B-Application
driver	O
for	O
their	O
hardware	O
the	O
day	O
the	O
specification	O
was	O
officially	O
released	O
,	O
but	O
it	O
was	O
only	O
mainlined	O
in	O
April	O
and	O
so	O
became	O
part	O
of	O
Mesa	B-Application
12.0	O
,	O
released	O
in	O
July	O
2016	O
.	O
</s>
<s>
While	O
already	O
the	O
i965	O
driver	O
was	O
n't	O
written	O
according	O
to	O
the	O
Gallium3D	O
specifications	O
,	O
for	O
the	O
Vulkan	B-Application
driver	O
it	O
makes	O
even	O
less	O
sense	O
to	O
flange	O
it	O
on	O
top	O
of	O
Gallium3D	O
.	O
</s>
<s>
Similarly	O
there	O
is	O
no	O
technical	O
reason	O
to	O
flange	O
it	O
with	O
NIR	O
,	O
but	O
yet	O
Intel	O
's	O
employees	O
implemented	O
their	O
Vulkan	B-Application
driver	O
that	O
way	O
.	O
</s>
<s>
It	O
is	O
to	O
be	O
expected	O
that	O
AMD	O
's	O
own	O
proprietary	O
Vulkan	B-Application
driver	O
,	O
which	O
was	O
released	O
in	O
March	O
,	O
and	O
was	O
announced	O
to	O
be	O
released	O
as	O
free	B-License
and	I-License
open-source	I-License
software	I-License
in	O
the	O
future	O
and	O
be	O
mainlined	O
into	O
Mesa	B-Application
,	O
also	O
abandons	O
Gallium3D	O
.	O
</s>
<s>
Conformance	O
with	O
Khronos-Test	O
came	O
in	O
version	O
17.3	O
.	O
</s>
<s>
Actual	O
is	O
Full	O
support	O
of	O
Vulkan	B-Application
1.0	O
and	O
1.1	O
since	O
Mesa	B-Application
18.1	O
.	O
</s>
<s>
Nvidia	B-Application
released	O
their	O
proprietary	O
GeForce	B-Application
driver	O
with	O
Vulkan	B-Application
support	O
at	O
launch	O
day	O
and	O
Imagination	O
Technologies	O
(	O
PowerVR	O
)	O
,	O
Qualcomm	O
(	O
Adreno	O
)	O
and	O
ARM	O
(	O
Mali	O
)	O
have	O
done	O
the	O
same	O
or	O
at	O
least	O
announced	O
proprietary	O
Vulkan	B-Application
drivers	O
for	O
Android	O
and	O
other	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
But	O
when	O
and	O
whether	O
additional	O
free	B-License
and	I-License
open-source	I-License
Vulkan	B-Application
implementations	O
for	O
these	O
GPUs	B-Architecture
will	O
show	O
up	O
,	O
remains	O
to	O
be	O
seen	O
.	O
</s>
<s>
Mesa	B-Application
Software	B-Application
Driver	I-Application
VIRGL	O
starts	O
Vulkan	B-Application
Development	O
in	O
2018	O
with	O
GSOC	O
projects	O
for	O
support	O
of	O
Virtual	O
machines	O
.	O
</s>
<s>
Lavapipe	O
is	O
a	O
CPU-based	O
Software	O
Vulkan	B-Application
driver	O
and	O
the	O
brother	O
of	O
LLVMpipe	O
.	O
</s>
<s>
Mesa	B-Application
Version	O
21.1	O
supports	O
Vulkan	B-Application
1.1	O
+	O
.	O
</s>
<s>
Google	B-Application
introduces	O
Venus	O
Vulkan	B-Application
Driver	O
for	O
virtual	O
machines	O
in	O
Mesa	B-Application
21.1	O
with	O
full	O
support	O
for	O
Vulkan	B-Application
1.2	O
+	O
.	O
</s>
<s>
Turnip	O
is	O
the	O
Vulkan	B-Application
brother	O
of	O
freedreno	O
for	O
OpenGL	B-Application
.	O
</s>
<s>
V3dv	O
supports	O
Vulkan	B-Application
1.0	O
+	O
since	O
Mesa	B-Application
20.3	O
.	O
</s>
<s>
In	O
Version	O
21.1	O
Turnip	O
supports	O
Vulkan	B-Application
1.1	O
+	O
.	O
</s>
<s>
Panfrost	O
PanVK	O
for	O
ARM	O
Mali	O
is	O
at	O
way	O
to	O
Vulkan	B-Application
1.1	O
,	O
but	O
only	O
1.0	O
is	O
stable	O
available	O
with	O
Mesa	B-Application
22.0	O
.	O
</s>
<s>
Implicit	O
fencing	O
is	O
used	O
for	O
synchronization	O
between	O
graphics	O
drivers	O
and	O
the	O
GPU	B-Architecture
hardware	O
.	O
</s>
<s>
In	O
the	O
past	O
the	O
Linux	B-Application
kernel	B-Operating_System
had	O
an	O
implicit	O
fencing	O
mechanism	O
,	O
where	O
a	O
fence	O
is	O
directly	O
attached	O
to	O
a	O
buffer	O
(	O
cf	O
.	O
</s>
<s>
Explicit	O
fencing	O
exposes	O
fences	O
to	O
userspace	O
,	O
where	O
userspace	O
gets	O
fences	O
from	O
both	O
the	O
Direct	B-Application
Rendering	I-Application
Manager	I-Application
(	O
DRM	B-Application
)	O
subsystem	O
and	O
from	O
the	O
GPU	B-Architecture
.	O
</s>
<s>
Explicit	O
fencing	O
is	O
required	O
by	O
Vulkan	B-Application
and	O
offers	O
advantages	O
for	O
tracing	O
and	O
debugging	O
.	O
</s>
<s>
Linux	B-Application
kernel	B-Operating_System
4.9	O
added	O
Android	O
's	O
synchronization	O
framework	O
to	O
mainline	O
.	O
</s>
<s>
Generic	O
Buffer	O
Management	O
(	O
GBM	O
)	O
is	O
an	O
API	B-Application
that	O
provides	O
a	O
mechanism	O
for	O
allocating	O
buffers	O
for	O
graphics	O
rendering	O
tied	O
to	O
Mesa	B-Application
.	O
</s>
<s>
GBM	O
is	O
intended	O
to	O
be	O
used	O
as	O
a	O
native	O
platform	O
for	O
EGL	B-Application
on	O
DRM	B-Application
or	O
openwfd	O
.	O
</s>
<s>
The	O
handle	O
it	O
creates	O
can	O
be	O
used	O
to	O
initialize	O
EGL	B-Application
and	O
to	O
create	O
render	O
target	O
buffers	O
.	O
</s>
<s>
Mesa	B-Application
GBM	O
is	O
an	O
abstraction	O
of	O
the	O
graphics	O
driver	O
specific	O
buffer	O
management	O
APIs	B-Application
(	O
for	O
instance	O
the	O
various	O
libdrm_*	O
libraries	O
)	O
,	O
implemented	O
internally	O
by	O
calling	O
into	O
the	O
Mesa	B-Application
GPU	B-Architecture
drivers	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
Wayland	B-Language
compositor	O
Weston	B-Application
does	O
its	O
rendering	O
using	O
OpenGL	B-Application
ES	I-Application
2	O
,	O
which	O
it	O
initializes	O
by	O
calling	O
EGL	B-Application
.	O
</s>
<s>
Since	O
the	O
server	O
runs	O
on	O
the	O
"	O
bare	O
KMS	B-Application
driver	I-Application
"	O
,	O
it	O
uses	O
the	O
EGL	B-Application
DRM	B-Application
platform	O
,	O
which	O
could	O
really	O
be	O
called	O
the	O
GBM	O
platform	O
,	O
since	O
it	O
relies	O
on	O
the	O
Mesa	B-Application
GBM	O
interface	O
.	O
</s>
<s>
At	O
XDC2014	O
,	O
Nvidia	B-Application
employee	O
Andy	O
Ritger	O
proposed	O
to	O
enhance	O
EGL	B-Application
in	O
order	O
to	O
replace	O
GBM	O
.	O
</s>
<s>
This	O
was	O
not	O
taken	O
positively	O
by	O
the	O
community	O
,	O
and	O
Nvidia	B-Application
eventually	O
changed	O
their	O
mind	O
,	O
and	O
took	O
another	O
approach	O
.	O
</s>
<s>
use	O
a	O
complete	O
(	O
or	O
partial	O
)	O
hardware	O
implementation	O
of	O
a	O
video	O
compression	O
or	O
decompression	O
algorithm	O
;	O
it	O
has	O
become	O
very	O
common	O
to	O
integrate	O
such	O
ASICs	O
into	O
the	O
chip	O
of	O
the	O
GPU/CPU/SoC	O
and	O
therefore	O
abundantly	O
available	O
;	O
for	O
marketing	O
reasons	O
companies	O
have	O
established	O
brands	O
for	O
their	O
ASICs	O
,	O
such	O
as	O
PureVideo	O
(	O
Nvidia	B-Application
)	O
,	O
Unified	O
Video	O
Decoder	O
(	O
AMD	O
)	O
,	O
Video	O
Coding	O
Engine	O
(	O
AMD	O
)	O
,	O
Quick	B-Algorithm
Sync	I-Algorithm
Video	I-Algorithm
(	O
Intel	O
)	O
,	O
DaVinci	B-General_Concept
(	O
Texas	O
Instruments	O
)	O
,	O
CedarX	B-Architecture
(	O
Allwinner	B-Architecture
)	O
,	O
Crystal	O
HD	O
(	O
Broadcom	O
)	O
;	O
some	O
ASICs	O
are	O
available	O
for	O
licensing	O
as	O
semiconductor	B-Architecture
intellectual	I-Architecture
property	I-Architecture
core	I-Architecture
;	O
usually	O
different	O
versions	O
implement	O
different	O
video	O
compression	O
and/or	O
video	O
decompression	O
algorithms	O
;	O
support	O
for	O
such	O
ASICs	O
usually	O
belong	O
into	O
the	O
kernel	B-Application
driver	I-Application
,	O
to	O
initialize	O
the	O
hardware	O
and	O
do	O
low-level	O
stuff	O
.	O
</s>
<s>
Mesa	B-Application
,	O
which	O
runs	O
in	O
user-space	O
,	O
houses	O
the	O
implementations	O
of	O
several	O
APIs	B-Application
for	O
software	O
,	O
e.g.	O
</s>
<s>
VLC	B-Application
media	I-Application
player	I-Application
,	O
GStreamer	B-Language
,	O
HandBrake	B-Language
,	O
etc.	O
,	O
to	O
conveniently	O
access	O
such	O
ASICs	O
:	O
</s>
<s>
For	O
example	O
,	O
Nouveau	B-Application
,	O
which	O
has	O
been	O
developed	O
as	O
part	O
of	O
Mesa	B-Application
,	O
but	O
also	O
includes	O
a	O
Linux	B-Application
kernel	B-Operating_System
component	O
,	O
which	O
is	O
being	O
developed	O
as	O
part	O
of	O
the	O
Linux	B-Application
kernel	B-Operating_System
,	O
supports	O
the	O
PureVideo-branded	O
ASICs	O
and	O
provides	O
access	O
to	O
them	O
through	O
VDPAU	B-Application
and	O
partly	O
through	O
XvMC	B-Protocol
.	O
</s>
<s>
The	O
free	O
radeon	O
driver	O
supports	O
Unified	O
Video	O
Decoder	O
and	O
Video	O
Coding	O
Engine	O
through	O
VDPAU	B-Application
and	O
OpenMAX	O
.	O
</s>
<s>
V4L2	B-Application
is	O
a	O
kernel-to-user-space	B-Application
interface	I-Application
for	O
video	O
bit	O
streams	O
delivered	O
by	O
webcams	O
or	O
TV	O
tuners	O
.	O
</s>
<s>
Due	O
to	O
patent	O
concerns	O
,	O
Fedora	O
Linux	B-Application
disabled	O
support	O
for	O
VAAPI	B-Application
in	O
its	O
build	O
of	O
Mesa	B-Application
in	O
September	O
2022	O
.	O
</s>
<s>
The	O
available	O
free	B-License
and	I-License
open-source	I-License
device	B-Application
drivers	I-Application
for	O
graphic	O
chipsets	O
are	O
"	O
stewarded	O
"	O
by	O
Mesa	B-Application
(	O
because	O
the	O
existing	O
free	B-License
and	I-License
open-source	I-License
implementation	O
of	O
APIs	B-Application
are	O
developed	O
inside	O
of	O
Mesa	B-Application
)	O
.	O
</s>
<s>
An	O
overview	O
over	O
some	O
(	O
but	O
not	O
all	O
)	O
of	O
the	O
drivers	O
available	O
in	O
Mesa	B-Application
is	O
given	O
at	O
.	O
</s>
<s>
There	O
are	O
device	B-Application
drivers	I-Application
for	O
AMD/ATI	O
R100	O
to	O
R800	O
,	O
Intel	O
,	O
and	O
Nvidia	B-Application
cards	O
with	O
3D	B-Architecture
acceleration	I-Architecture
.	O
</s>
<s>
Previously	O
drivers	O
existed	O
for	O
the	O
IBM/Toshiba/Sony	O
Cell	B-General_Concept
processor	O
of	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
S3	O
Virge	O
&	O
Savage	O
chipsets	O
,	O
VIA	O
chipsets	O
,	O
Matrox	O
G200	O
&	O
G400	O
,	O
and	O
more	O
.	O
</s>
<s>
The	O
free	B-License
and	I-License
open-source	I-License
drivers	O
compete	O
with	O
proprietary	O
closed-source	O
drivers	O
.	O
</s>
<s>
Depending	O
on	O
the	O
availability	O
of	O
hardware	O
documentation	O
and	O
man-power	O
,	O
the	O
free	B-License
and	I-License
open-source	I-License
driver	O
lag	O
behind	O
more	O
or	O
less	O
in	O
supporting	O
3D	B-Architecture
acceleration	I-Architecture
of	O
new	O
hardware	O
.	O
</s>
<s>
Today	O
this	O
is	O
still	O
true	O
for	O
Nouveau	B-Application
for	O
most	O
NVIDIA	B-Application
GPUs	B-Architecture
while	O
on	O
AMDs	O
Radeon	O
GPUs	B-Architecture
the	O
open	O
driver	O
now	O
mostly	O
matches	O
or	O
exceeds	O
the	O
proprietary	O
driver	O
's	O
performance	O
.	O
</s>
<s>
At	O
the	O
time	O
3D	B-Device
graphics	I-Device
cards	I-Device
became	O
more	O
mainstream	O
for	O
PCs	O
,	O
individuals	O
partly	O
supported	O
by	O
some	O
companies	O
began	O
working	O
on	O
adding	O
more	O
support	O
for	O
hardware-accelerated	O
3D	O
rendering	O
to	O
Mesa	B-Application
.	O
</s>
<s>
The	O
Direct	B-Application
Rendering	I-Application
Infrastructure	I-Application
(	O
DRI	B-Application
)	O
was	O
one	O
of	O
these	O
approaches	O
to	O
interface	O
Mesa	B-Application
,	O
OpenGL	B-Application
and	O
other	O
3D	O
rendering	O
API	B-Application
libraries	O
with	O
the	O
device	B-Application
drivers	I-Application
and	O
hardware	O
.	O
</s>
<s>
After	O
reaching	O
a	O
basic	O
level	O
of	O
usability	O
,	O
DRI	B-Application
support	O
was	O
officially	O
added	O
to	O
Mesa	B-Application
.	O
</s>
<s>
This	O
significantly	O
broadened	O
the	O
available	O
range	O
of	O
hardware	O
support	O
achievable	O
when	O
using	O
the	O
Mesa	B-Application
library	I-Application
.	O
</s>
<s>
With	O
adapting	O
to	O
DRI	B-Application
,	O
the	O
Mesa	B-Application
library	I-Application
finally	O
took	O
over	O
the	O
role	O
of	O
the	O
front	O
end	O
component	O
of	O
a	O
full	O
scale	O
OpenGL	B-Application
framework	O
with	O
varying	O
backend	O
components	O
that	O
could	O
offer	O
different	O
degrees	O
of	O
3D	O
hardware	O
support	O
while	O
not	O
dropping	O
the	O
full	O
software	O
rendering	O
capability	O
.	O
</s>
<s>
While	O
the	O
design	O
requires	O
all	O
these	O
components	O
to	O
interact	O
carefully	O
,	O
the	O
interfaces	B-Application
between	O
them	O
are	O
relatively	O
fixed	O
.	O
</s>
<s>
Nonetheless	O
,	O
as	O
most	O
components	O
interacting	O
with	O
the	O
Mesa	B-Application
stack	O
are	O
open	B-Application
source	I-Application
,	O
experimental	O
work	O
is	O
often	O
done	O
through	O
altering	O
several	O
components	O
at	O
once	O
as	O
well	O
as	O
the	O
interfaces	B-Application
between	O
them	O
.	O
</s>
<s>
to	O
the	O
update	O
of	O
the	B-Application
DRI	I-Application
specification	O
developed	O
in	O
the	O
2007-2008	O
timeframe	O
.	O
</s>
<s>
The	O
result	O
of	O
this	O
experimentation	O
,	O
DRI2	B-Application
,	O
operates	O
without	O
locks	O
and	O
with	O
improved	O
back	O
buffer	O
support	O
.	O
</s>
<s>
For	O
this	O
,	O
a	O
special	O
git	B-Application
branch	O
of	O
Mesa	B-Application
was	O
created	O
.	O
</s>
<s>
DRI3	O
is	O
supported	O
by	O
the	O
Intel	O
driver	O
since	O
2013	O
and	O
is	O
default	O
in	O
some	O
Linux	B-Application
distributions	O
since	O
2016	O
to	O
enable	O
Vulkan	B-Application
support	O
and	O
more	O
.	O
</s>
<s>
It	O
is	O
also	O
default	O
on	O
AMD	O
hardware	O
since	O
late	O
2016	O
(	O
X.Org	B-Operating_System
Server	I-Operating_System
1.18.3	O
and	O
newer	O
)	O
.	O
</s>
<s>
Mesa	B-Application
also	O
contains	O
an	O
implementation	O
of	O
software	O
rendering	O
called	O
that	O
allows	O
shaders	O
to	O
run	O
on	O
the	O
CPU	B-General_Concept
as	O
a	O
fallback	O
when	O
no	O
graphics	O
hardware	O
accelerators	O
are	O
present	O
.	O
</s>
<s>
The	O
Gallium	O
software	O
rasterizer	O
is	O
known	O
as	O
softpipe	O
or	O
when	O
built	O
with	O
support	O
for	O
LLVM	B-Application
llvmpipe	O
,	O
which	O
generates	O
CPU	B-General_Concept
code	O
at	O
runtime	O
.	O
</s>
<s>
Since	O
Mesa	B-Application
10.x	O
OpenGL	B-Application
3.3	O
+	O
is	O
supported	O
for	O
Softpipe	O
(	O
10.3	O
)	O
and	O
LLVMpipe	O
(	O
10.2	O
)	O
.	O
</s>
<s>
Actual	O
about	O
80%	O
of	O
Features	O
from	O
OpenGL	B-Application
4.x	O
are	O
implemented	O
in	O
Mesa	B-Application
17.3	O
(	O
See	O
Mesamatrix	O
)	O
.	O
</s>
<s>
In	O
Mesa	B-Application
12.0	O
a	O
new	O
Intel	O
Rasterizer	O
OpenSWR	O
is	O
available	O
with	O
high	O
advantages	O
in	O
clusters	O
for	O
large	O
data	O
sets	O
.	O
</s>
<s>
On	O
the	O
other	O
hand	O
,	O
OpenGL	B-Application
3.1	O
+	O
is	O
now	O
supported	O
.	O
</s>
<s>
OpenGL	B-Application
3.3	O
+	O
is	O
supported	O
for	O
OpenSWR	O
since	O
Mesa	B-Application
17.1	O
.	O
</s>
<s>
VirGL	O
is	O
a	O
Rasterizer	O
for	O
Virtual	O
machines	O
implemented	O
in	O
Mesa	B-Application
11.1	O
since	O
2015	O
with	O
OpenGL	B-Application
3.3	O
support	O
and	O
showed	O
in	O
Mesamatrix	O
since	O
Mesa	B-Application
18	O
.	O
</s>
<s>
In	O
actual	O
new	O
Mesa	B-Application
18.2	O
it	O
supports	O
more	O
than	O
the	O
others	O
with	O
OpenGL	B-Application
4.3	O
and	O
OpenGL	B-Application
ES	I-Application
3.2	O
.	O
</s>
<s>
About	O
80%	O
of	O
OpenGL	B-Application
4.4	O
and	O
4.5	O
features	O
are	O
also	O
now	O
ready	O
.	O
</s>
<s>
Vulkan	B-Application
Development	O
starts	O
with	O
GSOC	O
2018	O
projects	O
.	O
</s>
<s>
D3d12	O
is	O
a	O
project	O
of	O
Microsoft	O
for	O
WSL2	O
emulation	O
of	O
OpenGL	B-Application
3.3	O
+	O
and	O
OpenCL	B-Application
1.2	O
+	O
with	O
Direct3D	B-Application
12	O
.	O
</s>
<s>
Venus	O
is	O
a	O
new	O
Vulkan	B-Application
VirtIO	O
GPU	B-Architecture
Driver	O
for	O
GPU	B-Architecture
in	O
virtual	O
machines	O
by	O
Google	B-Application
.	I-Application
</s>
<s>
It	O
allows	O
for	O
a	O
single	O
copy	O
of	O
the	O
shared	O
Mesa	B-Application
code	O
to	O
be	O
used	O
among	O
multiple	O
drivers	O
(	O
instead	O
of	O
it	O
existing	O
in	O
each	O
driver	O
separately	O
)	O
and	O
offering	O
better	O
performance	O
than	O
a	O
separate	O
shared	O
library	O
due	O
to	O
the	O
removal	O
of	O
the	O
internal	O
library	O
interface	O
.	O
</s>
<s>
The	O
state	O
trackers	O
for	O
VDPAU	B-Application
and	O
XvMC	B-Protocol
have	O
become	O
separate	O
libraries	O
.	O
</s>
<s>
This	O
means	O
these	O
shaders	O
were	O
originally	O
written	O
in	O
HLSL	B-Language
and	O
then	O
translated	O
into	O
GLSL	B-Language
by	O
some	O
translator	O
program	O
,	O
such	O
as	O
e.g.	O
</s>
<s>
HLSL2GLSL	B-Application
.	O
</s>
<s>
Matt	O
Turner	O
said	O
it	O
was	O
much	O
easier	O
to	O
fix	O
this	O
in	O
the	O
translator	O
program	O
than	O
having	O
to	O
make	O
Mesa	B-Application
's	O
compiler	O
carry	O
the	O
burden	O
of	O
dealing	O
with	O
such	O
bloated	O
shaders	O
.	O
</s>
<s>
shader-db	O
cannot	O
be	O
considered	O
free	B-License
and	I-License
open-source	I-License
software	I-License
.	O
</s>
<s>
The	O
so-called	O
"	O
user-mode	O
graphics	O
device	B-Application
drivers	I-Application
"	O
(	O
UMD	O
)	O
in	O
Mesa	B-Application
have	O
very	O
few	O
commonalities	O
with	O
what	O
is	O
generally	O
called	O
a	O
device	B-Application
driver	I-Application
.	O
</s>
<s>
they	O
are	O
meant	O
to	O
work	O
on	O
top	O
of	O
additionally	O
existent	O
kernel	B-Operating_System
mode	O
graphics	O
device	B-Application
drivers	I-Application
,	O
that	O
are	O
e.g.	O
</s>
<s>
available	O
as	O
part	O
of	O
the	O
Linux	B-Application
kernel	B-Operating_System
found	O
in	O
the	O
source	O
code	O
under	O
/drivers/gpu/drm/	O
Each	O
UMD	O
communicates	O
with	O
its	O
kernel	B-Operating_System
mode	O
counterpart	O
with	O
the	O
help	O
of	O
a	O
specific	O
library	O
,	O
name	O
libdrm_specific	O
and	O
a	O
generic	O
one	O
,	O
named	O
libdrm	O
.	O
</s>
<s>
there	O
is	O
some	O
implementation	O
of	O
the	O
finite-state	B-Architecture
machine	I-Architecture
as	O
specified	O
by	O
e.g.	O
</s>
<s>
GLSL	B-Language
and	O
eventually	O
outputs	O
machine	B-Language
code	I-Language
.	O
</s>
<s>
One	O
goal	O
of	O
Mesa	B-Application
is	O
the	O
optimization	O
of	O
code	O
that	O
is	O
to	O
be	O
executed	O
by	O
the	O
respective	O
GPU	B-Architecture
.	O
</s>
<s>
Instead	O
of	O
documenting	O
the	O
pieces	O
of	O
software	O
,	O
this	O
article	O
shall	O
instead	O
look	O
at	O
the	O
Intermediate	B-Application
Representations	I-Application
used	O
in	O
the	O
process	O
of	O
compiling	O
and	O
optimizing	O
.	O
</s>
<s>
See	O
Abstract	B-Data_Structure
syntax	I-Data_Structure
tree	I-Data_Structure
(	O
AST	O
)	O
and	O
Static	O
single	O
assignment	O
form	O
(	O
SSA	O
form	O
)	O
.	O
</s>
<s>
SPIR-V	B-Application
is	O
a	O
certain	O
version	O
of	O
the	O
Standard	B-Application
Portable	I-Application
Intermediate	I-Application
Representation	I-Application
.	O
</s>
<s>
The	O
idea	O
is	O
,	O
that	O
graphics	O
applications	O
output	O
SPIR-V	B-Application
instead	O
of	O
GLSL	B-Language
.	O
</s>
<s>
In	O
contrast	O
to	O
the	O
latter	O
,	O
SPIR-V	B-Application
is	O
binary	O
to	O
avoid	O
implementation	O
differences	O
between	O
GLSL	B-Language
compiler	O
frontends	O
of	O
different	O
driver	O
implementations	O
,	O
as	O
this	O
has	O
been	O
a	O
major	O
source	O
of	O
application	O
incompatibilities	O
and	O
bugs	O
.	O
</s>
<s>
Also	O
SPIR-V	B-Application
binary	O
usually	O
also	O
passed	O
through	O
some	O
general	O
optimizations	O
.	O
</s>
<s>
SPIR-V	B-Application
'	O
s	O
binary	O
representation	O
also	O
offers	O
some	O
degree	O
of	O
obfuscation	O
,	O
which	O
might	O
appeal	O
to	O
some	O
software	O
vendors	O
as	O
a	O
form	O
of	O
intellectual	O
property	O
protection	O
;	O
however	O
,	O
SPIR-V	B-Application
contains	O
ample	O
information	O
for	O
reflection	O
and	O
.	O
</s>
<s>
NIR	O
(	O
New	O
Internal	O
Representation	O
)	O
was	O
introduced	O
to	O
overcome	O
TGSI	B-Language
limitations	O
.	O
</s>
<s>
NIR	O
was	O
extended	O
in	O
last	O
und	O
actual	O
releases	O
as	O
base	O
of	O
Spir-V	B-Application
support	O
and	O
is	O
since	O
2016	O
main	O
development	O
area	O
.	O
</s>
<s>
LLVMpipe	O
,	O
i965	O
,	O
RadeonSI	O
,	O
Nouveau	B-Application
,	O
freedreno	O
,	O
vc4	O
are	O
changed	O
to	O
NIR	O
from	O
TGSI	B-Language
.	O
</s>
<s>
All	O
drivers	O
with	O
full	O
OpenGL	B-Application
4.6	O
support	O
are	O
related	O
to	O
NIR	O
by	O
SPIR-V	B-Application
support	O
.	O
</s>
<s>
This	O
option	O
for	O
r600	O
is	O
default	O
since	O
Mesa	B-Application
21.0	O
.	O
</s>
<s>
The	O
Tungsten	B-Language
Graphics	I-Language
Shader	I-Language
Infrastructure	I-Language
(	O
TGSI	B-Language
)	O
was	O
introduced	O
in	O
2008	O
by	O
Tungsten	O
Graphics	O
.	O
</s>
<s>
All	O
Gallium3D-style	O
UMDs	O
ingest	O
TGSI	B-Language
.	O
</s>
<s>
NIR	O
is	O
now	O
Main	O
development	O
area	O
,	O
so	O
TGSI	B-Language
is	O
only	O
for	O
older	O
driver	O
like	O
r300g	O
default	O
infrastructure	O
and	O
will	O
be	O
deprecated	O
in	O
some	O
years	O
.	O
</s>
<s>
GLSL-To-TGSI	O
code	O
will	O
be	O
deleted	O
in	O
Mesa	B-Application
22.2	O
.	O
</s>
<s>
Default	O
is	O
newer	O
NIR-to-TGSI	O
with	O
GLSL-to-NIR	O
for	O
all	O
native	O
NIR	O
drivers	O
.	O
</s>
<s>
Some	O
older	O
TGSI	B-Language
drivers	O
are	O
supported	O
with	O
this	O
NIR	O
Code	O
path	O
.	O
</s>
<s>
Later	O
NIR-To-TGSI	O
will	O
be	O
deprecated	O
for	O
native	O
NIR	O
drivers	O
only	O
.	O
</s>
<s>
The	O
UMDs	O
radeonsi	O
and	O
llvmpipe	O
do	O
not	O
output	O
machine	B-Language
code	I-Language
,	O
but	O
instead	O
LLVM	B-Application
IR	B-Application
.	O
</s>
<s>
From	O
here	O
on	O
,	O
LLVM	B-Application
does	O
optimizations	O
and	O
the	O
compilation	O
to	O
machine	B-Language
code	I-Language
.	O
</s>
<s>
This	O
does	O
mean	O
,	O
that	O
a	O
certain	O
minimum	O
version	O
of	O
LLVM	B-Application
has	O
to	O
be	O
installed	O
as	O
well	O
.	O
</s>
<s>
RADV	O
ACO	O
uses	O
own	O
IR	B-Application
that	O
is	O
close	O
to	O
NIR	O
,	O
for	O
optimizing	O
and	O
generating	O
end	O
binary	O
code	O
for	O
Vulkan	B-Application
SPIR-V	B-Application
shaders	O
on	O
top	O
of	O
Radeon	O
GPUs	B-Architecture
(	O
GCN	O
1+	O
,	O
aka	O
GFX6+	O
)	O
GPUs	B-Architecture
.	O
</s>
<s>
As	O
of	O
version	O
20.1.0	O
the	O
ACO	O
is	O
only	O
used	O
in	O
RADV	O
(	O
Vulkan	B-Application
driver	O
)	O
and	O
not	O
in	O
RadeonSI	O
yet	O
.	O
</s>
<s>
Mesa	B-Application
's	O
GLSL	B-Language
compiler	O
generates	O
its	O
own	O
IR	B-Application
.	O
</s>
<s>
Because	O
each	O
driver	O
has	O
very	O
different	O
requirements	O
from	O
a	O
LIR	O
,	O
it	O
differentiates	O
between	O
HIR	O
(	O
high-level	O
IR	B-Application
)	O
and	O
LIR	O
(	O
low-level	O
IR	B-Application
)	O
.	O
</s>
<s>
Gallium3D	O
is	O
a	O
set	O
of	O
interfaces	B-Application
and	O
a	O
collection	O
of	O
supporting	O
libraries	O
intended	O
to	O
ease	O
the	O
programming	O
of	O
device	B-Application
drivers	I-Application
for	O
3D	O
graphics	O
chipsets	O
for	O
multiple	O
operating	B-General_Concept
systems	I-General_Concept
,	O
rendering	O
or	O
video	B-Application
acceleration	I-Application
APIs	I-Application
.	O
</s>
<s>
It	O
is	O
free	B-Application
and	I-Application
open-source	I-Application
graphics	I-Application
device	I-Application
driver	I-Application
software	O
.	O
</s>
<s>
The	O
development	O
of	O
Gallium3D	O
started	O
in	O
2008	O
at	O
Tungsten	O
Graphics	O
,	O
and	O
the	O
implementation	O
is	O
available	O
as	O
free	B-License
and	I-License
open-source	I-License
software	I-License
as	O
part	O
of	O
Mesa	B-Application
3D	I-Application
hosted	O
by	O
freedesktop.org	B-Application
.	O
</s>
<s>
This	O
is	O
done	O
by	O
providing	O
a	O
better	O
division	O
of	O
labor	O
,	O
for	O
example	O
,	O
leaving	O
memory	O
management	O
to	O
the	O
kernel	B-Operating_System
DRI	B-Application
driver	O
.	O
</s>
<s>
Gallium3D	O
has	O
been	O
a	O
part	O
of	O
Mesa	B-Application
since	O
2009	O
and	O
is	O
currently	O
used	O
by	O
the	O
free	B-License
and	I-License
open-source	I-License
graphics	O
driver	O
for	O
Nvidia	B-Application
(	O
nouveau	B-Application
project	O
)	O
,	O
for	O
AMD	O
's	O
R300	B-Device
–	O
R900	O
,	O
Intel	O
's	O
'	O
Iris	O
 '	O
driver	O
for	O
generation	O
8+	O
iGPUs	O
and	O
for	O
other	O
free	B-Application
and	I-Application
open-source	I-Application
GPU	I-Application
device	I-Application
drivers	I-Application
.	O
</s>
<s>
Gallium3D	O
eases	O
programming	O
of	O
device	B-Application
drivers	I-Application
by	O
splitting	O
the	O
graphics	O
device	B-Application
driver	I-Application
into	O
three	O
parts	O
.	O
</s>
<s>
This	O
is	O
accomplished	O
by	O
the	O
introduction	O
of	O
two	O
interfaces	B-Application
:	O
Gallium3D	O
State	O
Tracker	O
Interface	O
and	O
the	O
Gallium3D	O
WinSys	O
Interface	O
.	O
</s>
<s>
Each	O
graphical	O
API	B-Application
by	O
which	O
a	O
device	B-Application
driver	I-Application
is	O
being	O
addressed	O
has	O
its	O
own	O
State	O
Tracker	O
,	O
e.g.	O
</s>
<s>
there	O
is	O
a	O
Gallium3D	O
State	O
Tracker	O
for	O
OpenGL	B-Application
and	O
a	O
different	O
one	O
for	O
Direct3D	B-Application
or	O
GLX	B-Device
.	O
</s>
<s>
Each	O
State	O
Tracker	O
contains	O
an	O
implementation	O
of	O
the	O
Gallium3D	O
State	O
Tracker	O
Interface	O
,	O
and	O
is	O
unique	O
,	O
this	O
means	O
is	O
shared	O
by	O
all	O
existent	O
Gallium3D	O
device	B-Application
drivers	I-Application
.	O
</s>
<s>
This	O
is	O
the	O
actual	O
code	O
,	O
that	O
is	O
specific	O
to	O
the	O
underlying	O
3D	B-Architecture
graphic	I-Architecture
accelerator	I-Architecture
,	O
but	O
only	O
as	O
far	O
as	O
the	O
Gallium3D	O
WinSys	O
Interface	O
allows	O
.	O
</s>
<s>
There	O
is	O
a	O
unique	O
Gallium3D	O
hardware	O
device	B-Application
driver	I-Application
for	O
each	O
available	O
graphics	O
chip	O
and	O
each	O
implements	O
the	O
Gallium3D	O
State	O
Tracker	O
Interface	O
as	O
well	O
as	O
the	O
Gallium3D	O
WinSys	O
Interface	O
.	O
</s>
<s>
The	O
Gallium3D	O
hardware	O
device	B-Application
driver	I-Application
understands	O
only	O
TGSI	B-Language
(	O
Tungsten	B-Language
Graphics	I-Language
Shader	I-Language
Infrastructure	I-Language
)	O
,	O
an	O
intermediate	O
language	O
for	O
describing	O
shaders	O
.	O
</s>
<s>
This	O
code	O
translated	O
shaders	O
translated	O
from	O
GLSL	B-Language
into	O
TGSI	B-Language
further	O
into	O
instruction	B-General_Concept
set	I-General_Concept
implemented	O
by	O
the	O
GPU	B-Architecture
.	O
</s>
<s>
This	O
is	O
specific	O
to	O
the	O
underlying	O
kernel	B-Operating_System
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
and	O
each	O
one	O
implements	O
the	O
Gallium3D	O
WinSys	O
Interface	O
to	O
interface	O
with	O
all	O
available	O
Gallium3D	O
hardware	O
device	B-Application
drivers	I-Application
.	O
</s>
<s>
Gallium3D	O
provides	O
a	O
unified	O
API	B-Application
exposing	O
standard	O
hardware	O
functions	O
,	O
such	O
as	O
shader	O
units	O
found	O
on	O
modern	O
hardware	O
.	O
</s>
<s>
Thus	O
,	O
3D	O
APIs	B-Application
such	O
as	O
OpenGL	B-Application
1.x/2.x	O
,	O
OpenGL	B-Application
3.x	O
,	O
OpenVG	B-Library
,	O
GPGPU	B-Architecture
infrastructure	O
or	O
even	O
Direct3D	B-Application
(	O
as	O
found	O
in	O
the	O
Wine	B-Application
compatibility	I-Application
layer	I-Application
)	O
will	O
need	O
only	O
a	O
single	O
back-end	O
,	O
called	O
a	O
state	O
tracker	O
,	O
targeting	O
the	O
Gallium3D	O
API	B-Application
.	O
</s>
<s>
By	O
contrast	O
,	O
classic-style	O
DRI	B-Application
device	B-Application
drivers	I-Application
require	O
a	O
different	O
back-end	O
for	O
each	O
hardware	O
platform	O
and	O
several	O
other	O
APIs	B-Application
need	O
translation	O
to	O
OpenGL	B-Application
at	O
the	O
expense	O
of	O
code	O
duplication	O
.	O
</s>
<s>
All	O
vendor	O
device	B-Application
drivers	I-Application
,	O
due	O
to	O
their	O
proprietary	O
and	O
closed-source	O
nature	O
,	O
are	O
written	O
that	O
way	O
meaning	O
that	O
,	O
e.g.	O
</s>
<s>
the	O
AMD	B-Application
Catalyst	I-Application
implements	O
both	O
OpenGL	B-Application
and	O
Direct3D	B-Application
,	O
and	O
the	O
vendor	O
drivers	O
for	O
the	O
GeForce	B-Application
have	O
their	O
implementations	O
.	O
</s>
<s>
Under	O
Gallium3D	O
,	O
Direct	B-Application
Rendering	I-Application
Manager	I-Application
(	O
DRM	B-Application
)	O
kernel	B-Application
drivers	I-Application
will	O
manage	O
the	O
memory	O
and	O
Direct	B-Application
Rendering	I-Application
Interface	I-Application
(	O
DRI2	B-Application
)	O
drivers	O
will	O
be	O
more	O
GPU	B-Architecture
processing	O
oriented	O
.	O
</s>
<s>
During	O
the	O
transition	O
period	O
from	O
userspace	O
modesetting	O
to	O
kernelspace	O
modesetting	O
some	O
of	O
the	O
Mesa	B-Application
3D	I-Application
drivers	O
,	O
such	O
as	O
the	O
radeon	O
driver	O
or	O
Intel	O
's	O
drivers	O
,	O
ended	O
up	O
supporting	O
both	O
DRI1	O
and	O
DRI2	B-Application
and	O
used	O
DRI2	B-Application
if	O
available	O
on	O
the	O
system	O
.	O
</s>
<s>
ATi	O
r100-r200	O
so	O
users	O
for	O
those	O
cards	O
need	O
to	O
keep	O
using	O
Mesa	B-Application
3D	I-Application
with	O
DRI2	B-Application
for	O
their	O
3D	O
usage	O
.	O
</s>
<s>
Tungsten	B-Language
Graphics	I-Language
Shader	I-Language
Infrastructure	I-Language
(	O
TGSI	B-Language
)	O
is	O
an	O
Intermediate	B-Application
representation	I-Application
like	O
LLVM	B-Application
Intermediate	B-Application
Representation	I-Application
or	O
the	O
new	O
Standard	B-Application
Portable	I-Application
Intermediate	I-Application
Representation	I-Application
(	O
SPIR	O
)	O
to	O
be	O
used	O
by	O
the	O
Vulkan	B-Application
API	I-Application
and	O
OpenCL	B-Application
2.1	O
.	O
</s>
<s>
Shaders	O
written	O
in	O
OpenGL	B-Language
Shading	I-Language
Language	I-Language
are	O
to	O
be	O
translated/compiled	O
into	O
TGSI	B-Language
,	O
then	O
optimizations	O
are	O
made	O
,	O
and	O
then	O
the	O
TGSI	B-Language
shaders	O
are	O
being	O
compiled	O
into	O
shaders	O
for	O
the	O
instruction	B-General_Concept
set	I-General_Concept
of	O
the	O
used	O
GPU	B-Architecture
.	O
</s>
<s>
NIR	O
is	O
the	O
new	O
Layer	O
representation	O
in	O
Mesa	B-Application
with	O
full	O
SPIR-V	B-Application
support	O
and	O
since	O
2019	O
main	O
development	O
area	O
of	O
all	O
newer	O
drivers	O
with	O
OpenGL	B-Application
4.6	O
support	O
.	O
</s>
<s>
In	O
addition	O
,	O
using	O
the	O
modular	O
structure	O
of	O
Gallium3D	O
,	O
there	O
is	O
an	O
effort	O
underway	O
to	O
use	O
the	O
LLVM	B-Application
compiler	O
suite	O
and	O
create	O
a	O
module	O
to	O
optimize	O
shader	O
code	O
on	O
the	O
fly	O
.	O
</s>
<s>
The	O
library	O
represents	O
each	O
shader	O
program	O
using	O
an	O
extensible	O
binary	O
intermediate	B-Application
representation	I-Application
called	O
Tungsten	B-Language
Graphics	I-Language
Shader	I-Language
Infrastructure	I-Language
(	O
TGSI	B-Language
)	O
,	O
which	O
LLVM	B-Application
then	O
translates	O
into	O
GLSL	B-Language
shaders	O
optimized	O
for	O
target	O
hardware	O
.	O
</s>
<s>
Several	O
free	B-Application
and	I-Application
open-source	I-Application
graphics	I-Application
device	I-Application
drivers	I-Application
,	O
which	O
have	O
been	O
,	O
or	O
are	O
being	O
written	O
based	O
on	O
information	O
gained	O
through	O
clean-room	O
reverse	O
engineering	O
,	O
adopted	O
the	O
driver	O
model	O
provided	O
by	O
Gallium3D	O
,	O
e.g.	O
</s>
<s>
nouveau	B-Application
and	O
others	O
(	O
see	O
Free	B-Application
and	I-Application
open-source	I-Application
graphics	I-Application
device	I-Application
driver	I-Application
for	O
a	O
complete	O
list	O
)	O
.	O
</s>
<s>
Open-source	B-Application
drivers	O
for	O
Nvidia	B-Application
graphics	B-Device
cards	I-Device
by	O
the	O
name	O
of	O
Nouveau	B-Application
team	O
develops	O
its	O
drivers	O
using	O
the	O
Gallium3D	O
framework	O
.	O
</s>
<s>
2008-07-13	O
:	O
Nouveau	B-Application
development	O
is	O
done	O
exclusively	O
for	O
the	O
Gallium	O
framework	O
.	O
</s>
<s>
The	O
old	O
DRI	B-Application
driver	O
was	O
removed	O
from	O
the	O
master	O
branch	O
of	O
the	O
Mesa	B-Application
repository	O
on	O
Freedesktop.org	B-Application
.	O
</s>
<s>
2009-02-11	O
:	O
The	O
gallium-0.2	O
branch	O
was	O
merged	O
into	O
mainline	O
Master	O
branch	O
of	O
Mesa	B-Application
.	O
</s>
<s>
Development	O
is	O
done	O
in	O
Mesa	B-Application
mainline	O
.	O
</s>
<s>
2009-02-25	O
:	O
Gallium3D	O
can	O
run	O
on	O
Linux	B-Application
as	O
well	O
as	O
FreeBSD	O
kernels	B-Operating_System
.	O
</s>
<s>
2009-05-01	O
:	O
Zack	O
Rusin	O
from	O
Tungsten	O
Graphics	O
added	O
the	O
OpenVG	B-Library
state	O
tracker	O
to	O
Mesa	B-Application
3D	I-Application
,	O
which	O
enables	O
Scalable	B-Application
Vector	I-Application
Graphics	I-Application
to	O
be	O
hardware-accelerated	O
by	O
any	O
Gallium3D-based	O
driver	O
.	O
</s>
<s>
2009-07-17	O
:	O
Mesa3D	B-Application
7.5	O
is	O
released	O
,	O
the	O
first	O
version	O
to	O
include	O
Gallium3D	O
.	O
</s>
<s>
2010-09-10	O
:	O
Initial	O
support	O
for	O
the	O
Evergreen	O
GPUs	B-Architecture
was	O
added	O
to	O
the	O
r600g	O
driver	O
.	O
</s>
<s>
2010-09-21	O
:	O
There	O
are	O
two	O
Gallium3D	O
drivers	O
for	O
ATI	O
hardware	O
known	O
as	O
r300g	O
and	O
r600g	O
for	O
R300-R500	O
and	O
R600-Evergreen	O
GPUs	B-Architecture
respectively	O
.	O
</s>
<s>
2010-09-21	O
:	O
Major	O
commits	O
were	O
made	O
to	O
the	O
code	O
to	O
support	O
Direct3D	B-Application
10	O
and	O
11	O
.	O
</s>
<s>
In	O
time	O
,	O
this	O
might	O
offer	O
the	O
ability	O
to	O
use	O
recent	O
Direct3D	B-Application
implementations	O
on	O
Linux	B-Application
systems	O
.	O
</s>
<s>
2011-11-30	O
:	O
Intel	O
965g	O
and	O
Cell	B-General_Concept
Gallium	O
drivers	O
were	O
removed	O
from	O
the	O
master	O
branch	O
of	O
Mesa	B-Application
as	O
unmaintained	O
and	O
broken	O
.	O
</s>
<s>
2014-11-18	O
:	O
Major	O
commits	O
were	O
made	O
to	O
the	O
code	O
to	O
support	O
Direct3D	B-Application
9	O
.	O
</s>
<s>
He	O
thought	O
it	O
would	O
be	O
fun	O
to	O
implement	O
a	O
simple	O
3D	O
graphics	B-Library
library	I-Library
using	O
the	O
OpenGL	B-Application
API	B-Application
,	O
which	O
he	O
might	O
then	O
use	O
instead	O
of	O
VOGL	O
(	O
very	O
ordinary	O
GL	O
Like	O
Library	O
)	O
.	O
</s>
<s>
Mesa	B-Application
started	O
off	O
by	O
rendering	O
all	O
3D	O
computer	O
graphics	O
on	O
the	O
CPU	B-General_Concept
.	O
</s>
<s>
Despite	O
this	O
,	O
the	O
internal	O
architecture	O
of	O
Mesa	B-Application
was	O
designed	O
to	O
be	O
open	O
for	O
attaching	O
to	O
graphics	O
processor-accelerated	O
3D	O
rendering	O
.	O
</s>
<s>
The	O
Diamond	O
Monster	O
3D	O
,	O
using	O
the	O
Voodoo	O
Graphics	O
chipset	O
,	O
was	O
one	O
of	O
the	O
first	O
3D	O
hardware	O
devices	O
supported	O
by	O
Mesa	B-Application
.	O
</s>
<s>
The	O
first	O
true	O
graphics	O
hardware	O
support	O
was	O
added	O
to	O
Mesa	B-Application
in	O
1997	O
,	O
based	O
upon	O
the	O
Glide	B-Operating_System
API	I-Operating_System
for	O
the	O
then	O
new	O
3dfx	O
Voodoo	O
I/II	O
graphics	B-Device
cards	I-Device
and	O
their	O
successors	O
.	O
</s>
<s>
A	O
major	O
problem	O
of	O
using	O
Glide	B-Operating_System
as	O
the	O
acceleration	O
layer	O
was	O
the	O
habit	O
of	O
Glide	B-Operating_System
to	O
run	O
full	O
screen	O
,	O
which	O
was	O
only	O
suitable	O
for	O
computer	O
games	O
.	O
</s>
<s>
Further	O
,	O
Glide	B-Operating_System
took	O
the	O
lock	O
of	O
the	O
screen	O
memory	O
,	O
and	O
thus	O
the	O
display	O
server	O
was	O
blocked	O
from	O
doing	O
any	O
other	O
GUI	O
tasks	O
.	O
</s>
