Static Public Member Functions
static void	bindAttributes (const osg::GLExtensions ext, const osg::StateSet ss, int shader, int contextID)
	Loop over the uniforms of the stateset of the node and attach them to the current opengl active shader. More...

static bool	getVPShaderVector (osg::StateSet *ss, osg::State &state, unsigned int &shaderHash, std::vector< unsigned int > &vertShaderVector, std::vector< unsigned int > &fragShaderVector, bool skip_shadow_shaders=false)
	Collect all the active osg::Shader objects in the provided State and compile them. More...

static bool	addDegenerateShadersIfNeeded (osg::StateSet *ss, osg::State &state, std::vector< unsigned int > &vertShaderVector, std::vector< unsigned int > &fragShaderVector, bool skip_shadow_shaders=false)
	adds a degenerate shadow shader More...

static void	restoreEverything (osg::State &state)

static void	restoreOpenGLMode (osg::State &state, int stateToSet)

static void	restoreOpenGLStateAttribute (osg::State &state, osg::StateAttribute::Type type)

static void	restoreOpenGLProgram (osg::State &state)

static void	restoreOpenGLFBO (osg::State &state)

static void	markAllTextureAttributesDirty (osg::State &state)

static void	generateModelInstanceShaders (osg::Node *node, const std::string &shaderName)
	utility function for generating shaders for vrvOsg model instances simpler than the DtOsgShaderManager::generateShaders in that it doesn't share the statesets and just runs the osgEarth::ShaderGenerator on the node. More...

static unsigned	getNumGPUTextureImageUnits ()
	Query the number of available texture image units for shader samplers. More...

static void	clearCachedProgramsAndUniformLocations (void)
	delete the entries of programs to cached uniform locations must call when cloud layers are deleted, atmosphere deleted, triton drawable cleaned up. More...

Static Private Attributes
static ShaderUniLocMap	s_shaderUniLocMap
	used to cache the shader uniform locations to avoid glGetUniformLocation calls Saves somewhere between 1-3ms and reduces variability of frame time with Triton and Silverlining Tried caching the uniform values as well but that did not seem to make a difference. More...

Member Function Documentation

static void makVrv::DtOsgShaderUtils::bindAttributes	(	const osg::GLExtensions *	ext,
		const osg::StateSet *	ss,
		int	shader,
		int	contextID
	)

static

Loop over the uniforms of the stateset of the node and attach them to the current opengl active shader.

Also loops over the texture attributes in the stateset and attaches those as well always send is used by speedtree due to bug in updating uniform

static bool makVrv::DtOsgShaderUtils::getVPShaderVector	(	osg::StateSet *	ss,
		osg::State &	state,
		unsigned int &	shaderHash,
		std::vector< unsigned int > &	vertShaderVector,
		std::vector< unsigned int > &	fragShaderVector,
		bool	skip_shadow_shaders = `false`
	)

static

Collect all the active osg::Shader objects in the provided State and compile them.

If they compile they are pushed onto shaderVector. shaderVector is cleared in this function so only the shaders from the State are kept. The stateset "ss" is then cleared of an update mark. Returns True if the ss was marked for an update and the shaderVector was modified.

static bool makVrv::DtOsgShaderUtils::addDegenerateShadersIfNeeded	(	osg::StateSet *	ss,
		osg::State &	state,
		std::vector< unsigned int > &	vertShaderVector,
		std::vector< unsigned int > &	fragShaderVector,
		bool	skip_shadow_shaders = `false`
	)

static

adds a degenerate shadow shader

static void makVrv::DtOsgShaderUtils::restoreEverything ( osg::State & state )

static

static void makVrv::DtOsgShaderUtils::restoreOpenGLMode	(	osg::State &	state,
		int	stateToSet
	)

static

static void makVrv::DtOsgShaderUtils::restoreOpenGLStateAttribute	(	osg::State &	state,
		osg::StateAttribute::Type	type
	)

static

static void makVrv::DtOsgShaderUtils::restoreOpenGLProgram ( osg::State & state )

static

static void makVrv::DtOsgShaderUtils::restoreOpenGLFBO ( osg::State & state )

static

static void makVrv::DtOsgShaderUtils::markAllTextureAttributesDirty ( osg::State & state )

static

static void makVrv::DtOsgShaderUtils::generateModelInstanceShaders	(	osg::Node *	node,
		const std::string &	shaderName
	)

static

utility function for generating shaders for vrvOsg model instances simpler than the DtOsgShaderManager::generateShaders in that it doesn't share the statesets and just runs the osgEarth::ShaderGenerator on the node.

This was created solely for the purpose of removing duplicate code for model instances to setup their shaders.

static unsigned makVrv::DtOsgShaderUtils::getNumGPUTextureImageUnits ( )

static

Query the number of available texture image units for shader samplers.

static void makVrv::DtOsgShaderUtils::clearCachedProgramsAndUniformLocations ( void )

static

delete the entries of programs to cached uniform locations must call when cloud layers are deleted, atmosphere deleted, triton drawable cleaned up.

Member Data Documentation

ShaderUniLocMap makVrv::DtOsgShaderUtils::s_shaderUniLocMap

staticprivate

used to cache the shader uniform locations to avoid glGetUniformLocation calls Saves somewhere between 1-3ms and reduces variability of frame time with Triton and Silverlining Tried caching the uniform values as well but that did not seem to make a difference.

The documentation for this class was generated from the following file:

/data/exports/nrhent7-1/nightly/docs/vrForces.vrf4-8-branch/include/vrvOsg/DtOsgShaderUtils.h

Static Public Member Functions

Static Private Attributes

Member Function Documentation

Member Data Documentation