class OSGUTIL_EXPORT osgUtil::VisualsRequirementsVisitor

A visitor for traversing a scene graph establishing the OpenGL visuals are required to support rendering of that scene graph.

Inheritance:

Public Methods

VisualsRequirementsVisitor()

Default to traversing all children, and reqiresDoubleBuffer, requiresRGB and requiresDepthBuffer to true and with alpha and stencil off

void setRequiresDoubleBuffer(const bool flag)

const bool requiresDoubleBuffer() const

void setRequiresRGB(const bool flag)

const bool requiresRGB() const

void setRequiresDepthBuffer(const bool flag)

const bool requiresDepthBuffer() const

void setMinimumNumAlphaBits(const unsigned int bits)

const unsigned int getMinimumNumAlphaBits() const

const bool requiresAlphaBuffer() const

void setMinimumNumStencilBits(const unsigned int bits)

const unsigned int getMinimumNumStencilBits() const

const bool requiresStencilBuffer() const

virtual void applyStateSet(osg::StateSet& stateset)

virtual void apply(osg::Node& node)

virtual void apply(osg::Geode& geode)

virtual void apply(osg::Impostor& impostor)

Protected Fields

bool _requiresDoubleBuffer

bool _requiresRBG

bool _requiresDepthBuffer

unsigned int _minimumNumberAlphaBits

unsigned int _minimumNumberStencilBits

Documentation

A visitor for traversing a scene graph establishing the OpenGL visuals are required to support rendering of that scene graph. The results can then be used by applications to set up there windows with the corret visuals. Have a look at src/osgGLUT/Viewer.cpp's Viewer::open() method for an example how to use it.

VisualsRequirementsVisitor()

Default to traversing all children, and reqiresDoubleBuffer, requiresRGB and requiresDepthBuffer to true and with alpha and stencil off

void setRequiresDoubleBuffer(const bool flag)

const bool requiresDoubleBuffer() const

void setRequiresRGB(const bool flag)

const bool requiresRGB() const

void setRequiresDepthBuffer(const bool flag)

const bool requiresDepthBuffer() const

void setMinimumNumAlphaBits(const unsigned int bits)

const unsigned int getMinimumNumAlphaBits() const

const bool requiresAlphaBuffer() const

void setMinimumNumStencilBits(const unsigned int bits)

const unsigned int getMinimumNumStencilBits() const

const bool requiresStencilBuffer() const

virtual void applyStateSet(osg::StateSet& stateset)

virtual void apply(osg::Node& node)

virtual void apply(osg::Geode& geode)

virtual void apply(osg::Impostor& impostor)

bool _requiresDoubleBuffer

bool _requiresRBG

bool _requiresDepthBuffer

unsigned int _minimumNumberAlphaBits

unsigned int _minimumNumberStencilBits

This class has no child classes.

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