Ogre::GLSLSeparableProgramManager Class Reference

Ogre assumes that there are separate vertex and fragment programs to deal with but GLSL has one program pipeline object that represents the active vertex and fragment program objects during a rendering state. More...

#include <OgreGLSLSeparableProgramManager.h>

Inheritance diagram for Ogre::GLSLSeparableProgramManager:

Public Member Functions
	GLSLSeparableProgramManager (const GL3PlusSupport &support)
	~GLSLSeparableProgramManager (void)
void	extractUniformsFromGLSL (const String &src, GpuNamedConstants &constantDefs, const String &filename)
	Populate a list of uniforms based on GLSL source and store them in GpuNamedConstants.
void	extractUniformsFromProgram (GLuint programObject, const GpuConstantDefinitionMap *vertexConstantDefs, const GpuConstantDefinitionMap *hullConstantDefs, const GpuConstantDefinitionMap *domainConstantDefs, const GpuConstantDefinitionMap *geometryConstantDefs, const GpuConstantDefinitionMap *fragmentConstantDefs, const GpuConstantDefinitionMap *computeConstantDefs, GLUniformReferenceList &uniformList, GLAtomicCounterReferenceList &counterList, GLUniformBufferList &uniformBufferList, SharedParamsBufferMap &sharedParamsBufferMap, GLCounterBufferList &counterBufferList)
	Populate a list of uniforms based on an OpenGL program object.
GLSLSeparableProgram *	getCurrentSeparableProgram (void)
	Get the program pipeline that combines the current program objects.
void	setActiveComputeShader (GLSLShader *computShader)
void	setActiveFragmentShader (GLSLShader *fragmentShader)
void	setActiveGeometryShader (GLSLShader *geometryShader)
void	setActiveTessDomainShader (GLSLShader *domainShader)
void	setActiveTessHullShader (GLSLShader *hullShader)
void	setActiveVertexShader (GLSLShader *vertexShader)
	Set the active link programs for the next rendering state.

Static Public Member Functions
static GLSLSeparableProgramManager &	getSingleton (void)
static GLSLSeparableProgramManager *	getSingletonPtr (void)

Detailed Description

Ogre assumes that there are separate vertex and fragment programs to deal with but GLSL has one program pipeline object that represents the active vertex and fragment program objects during a rendering state.

GLSL vertex and fragment program objects are compiled separately and then attached to a program object and then the program pipeline object is linked. Since Ogre can only handle one vertex program stage and one fragment program stage being active in a pass, the GLSL Program Pipeline Manager does the same. The GLSL Program Pipeline Manager acts as a state machine and activates a pipeline object based on the active vertex and fragment program. Previously created pipeline objects are stored along with a unique key in a hash map for quick retrieval the next time the pipeline object is required.

Constructor & Destructor Documentation

GLSLSeparableProgramManager()

Ogre::GLSLSeparableProgramManager::GLSLSeparableProgramManager

(

const GL3PlusSupport &

support

)

~GLSLSeparableProgramManager()

Ogre::GLSLSeparableProgramManager::~GLSLSeparableProgramManager

(

void

)

Member Function Documentation

extractUniformsFromGLSL()

void Ogre::GLSLProgramManager::extractUniformsFromGLSL ( const String &  src, GpuNamedConstants &  constantDefs, const String &  filename  )

inherited

Populate a list of uniforms based on GLSL source and store them in GpuNamedConstants.

Parameters

src	Reference to the source code.
constantDefs	The defs to populate (will not be cleared before adding, clear it yourself before calling this if that's what you want).
filename	The file name this came from, for logging errors.

extractUniformsFromProgram()

void Ogre::GLSLProgramManager::extractUniformsFromProgram ( GLuint  programObject, const GpuConstantDefinitionMap *  vertexConstantDefs, const GpuConstantDefinitionMap *  hullConstantDefs, const GpuConstantDefinitionMap *  domainConstantDefs, const GpuConstantDefinitionMap *  geometryConstantDefs, const GpuConstantDefinitionMap *  fragmentConstantDefs, const GpuConstantDefinitionMap *  computeConstantDefs, GLUniformReferenceList &  uniformList, GLAtomicCounterReferenceList &  counterList, GLUniformBufferList &  uniformBufferList, SharedParamsBufferMap &  sharedParamsBufferMap, GLCounterBufferList &  counterBufferList  )

inherited

Populate a list of uniforms based on an OpenGL program object.

Parameters

programObject	Handle to the program object to query.
vertexConstantDefs	Definition of the uniforms extracted from the vertex program, used to match up physical buffer indexes with program uniforms. May be null if there is no vertex program.
fragmentConstantDefs	Definition of the uniforms extracted from the fragment program, used to match up physical buffer indexes with program uniforms. May be null if there is no fragment program.
list	The list to populate (will not be cleared before adding, clear it yourself before calling this if that's what you want).

getCurrentSeparableProgram()

GLSLSeparableProgram * Ogre::GLSLSeparableProgramManager::getCurrentSeparableProgram

(

void

)

Get the program pipeline that combines the current program objects.

If the program pipeline object was not already created a new one is created. Note that this method does NOT link the program.

getSingleton()

static GLSLSeparableProgramManager & Ogre::GLSLSeparableProgramManager::getSingleton ( void  )

static

getSingletonPtr()

static GLSLSeparableProgramManager * Ogre::GLSLSeparableProgramManager::getSingletonPtr ( void  )

static

setActiveComputeShader()

void Ogre::GLSLSeparableProgramManager::setActiveComputeShader

(

GLSLShader *

computShader

)

setActiveFragmentShader()

void Ogre::GLSLSeparableProgramManager::setActiveFragmentShader

(

GLSLShader *

fragmentShader

)

setActiveGeometryShader()

void Ogre::GLSLSeparableProgramManager::setActiveGeometryShader

(

GLSLShader *

geometryShader

)

setActiveTessDomainShader()

void Ogre::GLSLSeparableProgramManager::setActiveTessDomainShader

(

GLSLShader *

domainShader

)

setActiveTessHullShader()

void Ogre::GLSLSeparableProgramManager::setActiveTessHullShader

(

GLSLShader *

hullShader

)

setActiveVertexShader()

void Ogre::GLSLSeparableProgramManager::setActiveVertexShader

(

GLSLShader *

vertexShader

)

Set the active link programs for the next rendering state.

The active program pipeline object will be cleared. Normally called from the GLSLShader::bindProgram and unbindProgram methods.

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

• OgreGLSLSeparableProgramManager.h