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 <OgreGLSLMonolithicProgramManager.h>

Inheritance diagram for Ogre::GLSLMonolithicProgramManager:

Public Member Functions
	GLSLMonolithicProgramManager (const GL3PlusSupport &support)

	~GLSLMonolithicProgramManager ()

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 vertexConstantDefs, const GpuConstantDefinitionMap hullConstantDefs, const GpuConstantDefinitionMap domainConstantDefs, const GpuConstantDefinitionMap geometryConstantDefs, const GpuConstantDefinitionMap fragmentConstantDefs, const GpuConstantDefinitionMap computeConstantDefs, GLUniformReferenceList &uniformList)
	Populate a list of uniforms based on an OpenGL program object. More...

GLSLMonolithicProgram *	getActiveMonolithicProgram ()
	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	setActiveComputeShader (GLSLShader *computeGpuProgram)
	Set the active compute shader for the next rendering state. More...

void	setActiveDomainShader (GLSLShader *domainGpuProgram)
	Set the active domain(evaluation) shader for the next rendering state. More...

void	setActiveFragmentShader (GLSLShader *fragmentGpuProgram)
	Set the active fragment shader for the next rendering state. More...

void	setActiveGeometryShader (GLSLShader *geometryGpuProgram)
	Set the active geometry shader for the next rendering state. More...

void	setActiveHullShader (GLSLShader *hullGpuProgram)
	Set the active hull(control) shader for the next rendering state. More...

void	setActiveVertexShader (GLSLShader *vertexGpuProgram)
	Set the active vertex shader for the next rendering state. More...

Static Public Member Functions
static GLSLMonolithicProgramManager &	getSingleton ()

static GLSLMonolithicProgramManager *	getSingletonPtr ()

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

◆ GLSLMonolithicProgramManager()

Ogre::GLSLMonolithicProgramManager::GLSLMonolithicProgramManager ( const GL3PlusSupport & support )

◆ ~GLSLMonolithicProgramManager()

Ogre::GLSLMonolithicProgramManager::~GLSLMonolithicProgramManager ( )

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
	)

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).

◆ getActiveMonolithicProgram()

GLSLMonolithicProgram* Ogre::GLSLMonolithicProgramManager::getActiveMonolithicProgram ( )

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.

◆ getSingleton()

static GLSLMonolithicProgramManager& Ogre::GLSLMonolithicProgramManager::getSingleton ( )

static

◆ getSingletonPtr()

static GLSLMonolithicProgramManager* Ogre::GLSLMonolithicProgramManager::getSingletonPtr ( )

static

◆ setActiveComputeShader()

void Ogre::GLSLMonolithicProgramManager::setActiveComputeShader ( GLSLShader * computeGpuProgram )

Set the active compute shader for the next rendering state.