Ogre::GLSLLinkProgramManager Class Reference

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

#include <OgreGLSLLinkProgramManager.h>

Inheritance diagram for Ogre::GLSLLinkProgramManager:

List of all members.


Public Member Functions
	GLSLLinkProgramManager (void)
	~GLSLLinkProgramManager (void)
GLSLLinkProgram *	getActiveLinkProgram (void)
	Get the program object that links the two active shader objects together if a program object was not already created and linked a new one is created and linked.
void	setActiveFragmentShader (GLSLGpuProgram *fragmentGpuProgram)
	Set the active fragment shader for the next rendering state.
void	setActiveVertexShader (GLSLGpuProgram *vertexGpuProgram)
	Set the active vertex shader for the next rendering state.
Static Public Member Functions
GLSLLinkProgramManager &	getSingleton (void)
GLSLLinkProgramManager *	getSingletonPtr (void)
Static Protected Attributes
GLSLLinkProgramManager *	ms_Singleton
Private Types
typedef HashMap< GLuint, GLSLLinkProgram * >	LinkProgramMap
typedef LinkProgramMap::iterator	LinkProgramIterator
Private Attributes
LinkProgramMap	LinkPrograms
	container holding previously created program objects
GLSLGpuProgram *	mActiveVertexGpuProgram
	active objects defining the active rendering gpu state
GLSLGpuProgram *	mActiveFragmentGpuProgram
GLSLLinkProgram *	mActiveLinkProgram

Detailed Description

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

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

Definition at line 47 of file OgreGLSLLinkProgramManager.h.

Member Typedef Documentation

typedef LinkProgramMap::iterator Ogre::GLSLLinkProgramManager::LinkProgramIterator [private]

Definition at line 53 of file OgreGLSLLinkProgramManager.h.

typedef HashMap<GLuint, GLSLLinkProgram*> Ogre::GLSLLinkProgramManager::LinkProgramMap [private]

Definition at line 52 of file OgreGLSLLinkProgramManager.h.

Constructor & Destructor Documentation

Ogre::GLSLLinkProgramManager::GLSLLinkProgramManager ( void )

Ogre::GLSLLinkProgramManager::~GLSLLinkProgramManager ( void )

Member Function Documentation

GLSLLinkProgram* Ogre::GLSLLinkProgramManager::getActiveLinkProgram ( void )

Get the program object that links the two active shader objects together if a program object was not already created and linked a new one is created and linked.

GLSLLinkProgramManager& Ogre::GLSLLinkProgramManager::getSingleton ( void ) [static]

Reimplemented from Ogre::Singleton< GLSLLinkProgramManager >.

GLSLLinkProgramManager* Ogre::GLSLLinkProgramManager::getSingletonPtr ( void ) [static]

Reimplemented from Ogre::Singleton< GLSLLinkProgramManager >.

void Ogre::GLSLLinkProgramManager::setActiveFragmentShader ( GLSLGpuProgram * fragmentGpuProgram )

Set the active fragment shader for the next rendering state.
The active program object will be cleared. Normally called from the GLSLGpuProgram::bindProgram and unbindProgram methods

void Ogre::GLSLLinkProgramManager::setActiveVertexShader ( GLSLGpuProgram * vertexGpuProgram )

Set the active vertex shader for the next rendering state.
The active program object will be cleared. Normally called from the GLSLGpuProgram::bindProgram and unbindProgram methods