HP J Class 3 - For Visualization Center Betriebsanweisung PDF herunterladen (Seite 84)

installation and user information

optimization

Chapter 284

gamma value

Another way to ﬁne-tune the image quality is to adjust the gamma

correction. Specify the default values to be used for 3D gamma

correction. using the instructions in the

/opt/graphics/OpenGL/sv/doc/README.gamma ﬁle.

HPOGL_PUSH _ENVIRONMENT

To override the default environment speciﬁed in the SlaveEnvironment

section of the /etc/X11/X0screens ﬁle, have the application startup

script set HPOGL_PUSH_ENVIRONMENT.

By setting HPOGL_PUSH_ENVIRONMENT, all HPOGL* environment

variables are passed across to the slave nodes. With this mechanism,

each application can have its own individual environment. In the

absence of HPOGL_PUSH_ENVIRONMENT, slave environments

default to X0screens settings at the time that the Xserver was started.

As an example, assume X0screens has:

SlaveEnvironment

HPOGL_FORCE_SCENEAA=1

HPOGL_LIGHTING_SPACE=EC

Application abc’s startup script contains:

export HPOGL_BOUNDING_VOLUME_ENABLE=1

export HPOGL_BOUNDING_VOLUME_GLOBAL=1

export HPOGL_BVOL_MIN_VERTS=5

export HPOGL_BVOL_MAX_VERTS=10

export HPOGL_PUSH_ENVIRONMENT=1

/opt/apps/abc

For this example, application abc will run with the four variables set in

its environment and WILL NOT have HPOGL_FORCE_SCENEAA or

HPOGL_LIGHTING_SPACE=EC set.

Any other application that is run without

HPOGL_PUSH_ENVIRONMENT will have only the X0screens values.

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HP J Class 3 - For Visualization Center Betriebsanweisung Seite 84