HP Visualization Center sv6 HP Visualization Center sv6 - Installation and Use - Page 84

gamma value, HPOGL_PUSH _ENVIRONMENT

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installation and user information optimization 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. 84 Chapter 2

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installation and user information
optimization
Chapter 2
84
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.