Ogre::GLSLProgramManager Class Reference

Ogre assumes that there are separate 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 <OgreGLSLProgramManager.h>

Inheritance diagram for Ogre::GLSLProgramManager:

Public Member Functions
	GLSLProgramManager (GL3PlusRenderSystem *renderSystem)
	~GLSLProgramManager ()
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	extractUniformsFromProgram (GLuint programObject, const GpuConstantDefinitionMap *(&constantDefs)[6], GLUniformReferenceList &uniformList, GLAtomicCounterReferenceList &counterList, GLUniformBufferList &uniformBufferList, SharedParamsBufferMap &sharedParamsBufferMap, GLCounterBufferList &counterBufferList)
	Populate a list of uniforms based on an OpenGL program object. More...
GLSLProgram *	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...
GL3PlusStateCacheManager *	getStateCacheManager ()
void	setActiveComputeShader (GLSLShader *computeGpuProgram)
	Set the shader for the next rendering state. More...
void	setActiveDomainShader (GLSLShader *domainGpuProgram)
	Set the shader for the next rendering state. More...
void	setActiveFragmentShader (GLSLShader *fragmentGpuProgram)
	Set the shader for the next rendering state. More...
void	setActiveGeometryShader (GLSLShader *geometryGpuProgram)
	Set the shader for the next rendering state. More...
void	setActiveHullShader (GLSLShader *hullGpuProgram)
	Set the shader for the next rendering state. More...
void	setActiveVertexShader (GLSLShader *vertexGpuProgram)
	Set the shader for the next rendering state. More...

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

Detailed Description

Ogre assumes that there are separate 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 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 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.

Constructor & Destructor Documentation

GLSLProgramManager()

Ogre::GLSLProgramManager::GLSLProgramManager

(

GL3PlusRenderSystem *

renderSystem

)

~GLSLProgramManager()

Ogre::GLSLProgramManager::~GLSLProgramManager

(

)

Member Function Documentation

getActiveProgram()

GLSLProgram* Ogre::GLSLProgramManager::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.

Note

this method does NOT link seperable programs.

setActiveVertexShader()

void Ogre::GLSLProgramManager::setActiveVertexShader

(

GLSLShader *

vertexGpuProgram

)

Set the shader for the next rendering state.

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

setActiveHullShader()

void Ogre::GLSLProgramManager::setActiveHullShader

(

GLSLShader *

hullGpuProgram

)

Set the shader for the next rendering state.

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

setActiveDomainShader()

void Ogre::GLSLProgramManager::setActiveDomainShader

(

GLSLShader *

domainGpuProgram

)

Set the shader for the next rendering state.

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

setActiveGeometryShader()

void Ogre::GLSLProgramManager::setActiveGeometryShader

(

GLSLShader *

geometryGpuProgram

)

Set the shader for the next rendering state.

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

setActiveFragmentShader()

void Ogre::GLSLProgramManager::setActiveFragmentShader

(

GLSLShader *

fragmentGpuProgram

)

Set the shader for the next rendering state.

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

setActiveComputeShader()

void Ogre::GLSLProgramManager::setActiveComputeShader

(

GLSLShader *

computeGpuProgram

)

Set the shader for the next rendering state.

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

extractUniformsFromProgram()

void Ogre::GLSLProgramManager::extractUniformsFromProgram	(	GLuint	programObject,
		const GpuConstantDefinitionMap *(&)	constantDefs[6],
		GLUniformReferenceList &	uniformList,
		GLAtomicCounterReferenceList &	counterList,
		GLUniformBufferList &	uniformBufferList,
		SharedParamsBufferMap &	sharedParamsBufferMap,
		GLCounterBufferList &	counterBufferList
	)

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

getStateCacheManager()

GL3PlusStateCacheManager* Ogre::GLSLProgramManager::getStateCacheManager

(

)

getSingleton()

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

static

getSingletonPtr()

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

static

extractUniformsFromGLSL()

void Ogre::GLSLProgramManagerCommon::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.

destroyAllByShader()

void Ogre::GLSLProgramManagerCommon::destroyAllByShader ( GLSLShaderCommon *  shader )

inherited

Destroy all programs which referencing this shader.

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

• OgreGLSLProgramManager.h