HP SVA V2.1 Parallel Compositing Reference Guide

Table 2-7 Summary of Context Properties
DescriptionCan
Change
After
Context
Create
Can Set
On
Context
Create
TypePropertyValue
1
Specifies how the pixels from multiple hosts are
composited. Specific values of this property
include:
The color of the pixel
closest to the eye
masks a more distant
pixel.
PC_COMP_DEPTH
The color of the pixel
is a blending of the
colors of the 2 pixels.
The blending is
dictated by the
transparency (alpha
value) of the 2 pixels.
PC_COMP_ALPHA_SORT
No default value.
noyesinteger
PC_COMPOSITE_TYPE
global
An integer ID uniquely assigned by the Library
to each context within a session. Any host that is
a member of a context returns the same value.
Any two hosts that are members of different
contexts are returned different values.
noyesinteger
PC_CONTEXT_ID
Overall height and width of the frame created by
the context. The height and width are specified
in pixels.
Default value is 256.
yesyesinteger
PC_FRAME_HEIGHT
yesyesinteger
PC_FRAME_WIDTH
Specifies the network to use to transfer images
between the hosts when they run on different
systems. The acceptable values for this property
are defined by the system property,
PC_NETWORK_ID.
Default value is 0 (the default network, in this
case, the Interconnect in native mode). A value
of 1 is the Interconnect using sockets.
noyesinteger
PC_NETWORK_ID
The number of hosts in the context.nonointeger
PC_NUM_HOSTS
Directs the Library to be prepared to include pixel
depth information when a program requests a
result.
Default value is 0 (no depth in output).
yesyesinteger
PC_OUTPUT_DEPTH
The type of the pixels in the frame. Each pixel has
an encoding for the color of that pixel and any
additional information that may be needed to
composite the pixels, such as depth or
transparency.
Both encodings are captured in this property.
Specific values of this property are listed in
Table 2-9.
No default value.
noyesinteger
PC_PIXEL_FORMAT
nonointeger
PC_SESSION_ID
Context Properties 29