overview of OpenGL
the OpenGL product
Chapter 1 11
visual support for other graphics devices
The OpenGL product can be used with devices that have no hardware
OpenGL support using the Virtual Memory Driver (VMD) in Virtual
GLX mode (VGL). In addition, VMD allows you to use many X11
drawables (local or remote) as “virtual devices” for three-dimensional
graphics with OpenGL. This includes rendering to X terminals and other
non-GLX extended X servers.
Table 1-6 Stereo Visual Support for HP Fire GL-UX
X Visual Information OpenGL GLX Information
Class Depth
Color
Map
Size
Buffer
Size
Overlay
=1 or
Image=0
RGBA=
1 or
Index=0
Double
Buffer
Stereo
# Aux.
Buffers
Color Buffer Stencil
Accumulation
Buffer
RGBAZ R G B A
TrueColor 24 256 24 0 1 1 1 0 8 8 8 0 24 4 16 16 16 0
TrueColor 24 256 32 0 1 1 1 0 8 8 8 8 24 4 16 16 16 16
Table 1-7 Stereo Mode Visual Support for ATI Fire X1/X3
X Visual Information OpenGL GLX Information
Class Depth
Color
Map
Size
Buffer
Size
Overlay=1
or
Image=0
RGBA=1
or
Index=0
Double
Buffer
Stereo
# Aux.
Buffers
Color Buffer Stencil
Accumulation
Buffer
RGBAZ RG B A
PseudoColor 8 256 8 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
PseudoColor 8 256 8 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0
TrueColor 24 256 32 0 1 0 0 0 8 8 8 8 24 8 16 16 16 16
TrueColor 24 256 32 0 1 0 1 0 8 8 8 8 24 8 16 16 16 16
TrueColor 24 256 32 0 1 1
00
888824
8
16 16 16 16
TrueColor 24 256 32 0 1
110
888824
8
16 16 16 16
Table 1-8 Visuals Table for VMD
X Visual Information OpenGL GLX Information
Class Depth
Color
Map
Size
Buffer
Size
Overlay=1
or
Image=0
RGBA=1
or
Index=0
Double
Buffer
# Aux.
Buffers
Color Buffer Stencil
Accumulation
Buffer
RGBA
Z
a
RGBA
PseudoColor 8 256 8 0 0
b
0 0000244 0 0 0 0
PseudoColor 8 256 8 0 0
b
0 000000 0 0 0 0
TrueColor 24 256 24 0 1
b
0888
c
24 4 16 16 16 16
DirectColor 24 256 24 0 1
b
0888
c
24 4 16 16 16 16
OGLImp.book Page 11 Tuesday, February 14, 2006 9:15 AM