The SoDirectVizManager SoDirectVizManager SoDirectVizManager class manages several features for adapting DirectViz to the complexity of the scene and the performance of the hardware. They are controlled by different fields and can be accessed via the DirectViz control dialog, which allows the user to tune interaction and image quality. SoPreferences SoPreferences SoPreferences parameters are also available to control DirectViz behavior.
The control dialog appears automatically when DirectViz is launched, unless the SoPreferences SoPreferences SoPreferences DIRECTVIZ_CONTROL_DIALOG parameter is set to 0 or if the SoDirectVizManager SoDirectVizManager SoDirectVizManager controlDialog field is set to FALSE. It is also possible to show or hide the dialog with the method showDirectVizDialog () of the corresponding Open Inventor viewer or by pressing the Shift+F8 keyboard control keys.
The parameters available in the control dialog are summarized below and are detailed in subsequent sections.
| Description | Control dialog | Related SoDirectVizManager SoDirectVizManager SoDirectVizManager fields |
|---|---|---|
|
Turn on DirectViz rendering |
 |
rendering |
|
Use acceleration structure cache file |
 |
fileCaching |
|
Activate shadow casting globally |
 |
globalShadowing |
|
Activate soft shadows |
 |
softShadows |
|
Enable recursion on subsampling Set recursion depth limit |
 |
subRecursion recursionLimit |
|
Enable accumulation oversampling Set number of passes |
 |
accumulation maxAccumulationValue |
|
Enable adaptive oversampling |
 |
adaptiveOversampling |
|
Enable fuzzy light effects |
 |
fuzzyLights |
|
Enable glossy surfaces effects |
 |
glossySurfaces |
|
Sets the number of environment lights and corresponding scale |
 |
numEnvLights envLightIntensityScale |
|
Enable progressive resolution rendering Set number of steps |
 |
progressiveRendering numProgressiveRenderingSteps |
|
Enable resolution sub-sampling Set sampling factor |
 |
subSampling subSamplingFactor |
The control dialog also provides information about:
Last rendered image – size in pixels, accumulation value, and generation time in seconds.
DirectViz structures – number of geometry objects, textures, surface shaders, and lights.