NVIDIA Corporation
122
Chapter 7
Configuring Key ForceWare Graphics Driver Features
Overlays
are
supported
in
16
‐
bit
and
32
‐
bit
color
modes.
Exported Pixel Types
Applies
to
graphics
cards
based
on
newer
NVIDIA
GPUs,
such
as
the
Quadro
FX
series.
Option
available
only
on
newer
NVIDIA
GPUs)
lets
you
specify
pixel
formats
to
use
for
overlays
in
OpenGL.
•
Color
indexed
overlays
(8bpp)
allows
the
application
to
use
8
‐
bit
paletted
overlays.
•
RGB
overlays
(RGB555
format)
allows
the
application
to
use
16
‐
bit
(RGB555)
overlays.
•
Color
indexed
(8
bpp)
and
RGB555
format
allows
the
application
to
use
either
8
‐
bit
paletted
or
16
‐
bit
(RGB555)
overlays.
Overlays need additional onboard graphics memory and may not be available under
all resolutions. You may want to reduce the resolution or color depth if you have
problems accessing overlay functionality.
Using Video Overlay Settings
Use
the
Video
Overlay
settings
to
adjust
the
quality
of
video
or
DVD
playback
on
your
display.
Note
that
these
settings
affect
videos
that
are
created
using
the
hardware
overlay,
but
have
no
effect
on
videos
created
using
software
overlays,
or
a
“blit”
process
such
as
VMR.
Note:
If
any
settings
changes
you
make
have
no
effect
on
the
video
overlay
after
you
click
Apply
,
close
the
video
overlay
and
then
re
‐
open
it.
Tip:
Overlays
need
additional
onboard
graphics
memory
and
may
not
be
available
under
all
resolutions.
You
may
want
to
reduce
the
resolution
or
color
depth
if
you
have
problems
accessing
overlay
functionality.
Tip:
If
the
stereo
or
overlay
features
do
not
work
properly,
you
may
want
to
try
setting
different
screen
resolutions
and
refresh
rates
until
you
arrive
at
a
setting
or
combination
of
settings
for
better
results.
QuadroGuide_.book Page 122 Thursday, July 27, 2006 6:48 PM
