Ogre::GLSLESProgramManager Class Reference

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

#include <OgreGLSLESProgramManager.h>

Inheritance diagram for Ogre::GLSLESProgramManager:

Public Member Functions
	GLSLESProgramManager (void)
	~GLSLESProgramManager (void)
GLSLESProgramCommon *	getActiveProgram (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. More...
void	optimiseShaderSource (GLSLESGpuProgram *gpuProgram)
Public Member Functions inherited from Ogre::GLSLProgramManagerCommon
	GLSLProgramManagerCommon ()
virtual	~GLSLProgramManagerCommon ()
void	destroyAllByShader (GLSLShaderCommon *shader)
	Destroy all programs which referencing this shader. More...
void	extractUniformsFromGLSL (const String &src, GpuNamedConstants &constantDefs, const String &filename)
	Populate a list of uniforms based on GLSL source and store them in GpuNamedConstants. More...
void	setActiveShader (GpuProgramType type, GLSLShaderCommon *shader)
	Set the shader for the next rendering state. More...
Public Member Functions inherited from Ogre::Singleton< GLSLESProgramManager >
	Singleton (void)
	~Singleton (void)

Static Public Member Functions
static void	extractUniforms (GLuint programObject, const GpuConstantDefinitionMap *vertexConstantDefs, const GpuConstantDefinitionMap *fragmentConstantDefs, GLUniformReferenceList &list)
	Populate a list of uniforms based on a program object. More...
static GLSLESProgramManager &	getSingleton (void)
static GLSLESProgramManager *	getSingletonPtr (void)
Static Public Member Functions inherited from Ogre::Singleton< GLSLESProgramManager >
static GLSLESProgramManager &	getSingleton (void)
	Get the singleton instance. More...
static GLSLESProgramManager *	getSingletonPtr (void)
	Get the singleton instance. More...

Detailed Description

Ogre assumes that there are separate vertex and fragment programs to deal with but GLSL ES 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 separately 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 ES Link Program Manager does the same. The GLSL ES 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.

Constructor & Destructor Documentation

GLSLESProgramManager()

Ogre::GLSLESProgramManager::GLSLESProgramManager

(

void

)

~GLSLESProgramManager()

Ogre::GLSLESProgramManager::~GLSLESProgramManager

(

void

)

Member Function Documentation

getActiveProgram()

GLSLESProgramCommon* Ogre::GLSLESProgramManager::getActiveProgram

(

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.

optimiseShaderSource()

void Ogre::GLSLESProgramManager::optimiseShaderSource

(

GLSLESGpuProgram *

gpuProgram

)

extractUniforms()

static void Ogre::GLSLESProgramManager::extractUniforms ( GLuint  programObject, const GpuConstantDefinitionMap *  vertexConstantDefs, const GpuConstantDefinitionMap *  fragmentConstantDefs, GLUniformReferenceList &  list  )

static

Populate a list of uniforms based on a program object.

Parameters

programObject	Handle to the program object to query
vertexConstantDefs	Definition of the constants 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 constants 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).

getSingleton()

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

static

getSingletonPtr()

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

static

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

• OgreGLSLESProgramManager.h