Singleton Class to init and Use GLSL Shaders the class stores the shaders as a map of shader objects and they can be found by name Updated to use templated singleton Updated to use a map to store the shaders by name and hence removed the name from the ShaderObject Class Also Added methods to adjust shader parameters by shader / param name, at present use only 1-4 Floats and a few others need to think of a better way of doing this. More...

#include <ShaderLib.h>

Inheritance diagram for ngl::ShaderLib:

Collaboration diagram for ngl::ShaderLib:

Public Member Functions
void	createShaderProgram (const std::string &_name) noexcept
	create an empty ShaderProgram for us to attach shaders etc to More...

void	attachShader (const std::string &_name, ShaderType _type) noexcept
	attatch a Shader to the ShaderProgram referenced by _name More...

void	attachShaderToProgram (const std::string &_program, const std::string &_shader) noexcept
	attatch a Shader to the ShaderProgram referenced by _name More...

GLuint	getProgramID (const std::string &_name) noexcept
	get the Program ID of the GL Program by name More...

void	compileShader (const std::string &_name) noexcept
	compile the shader from _name More...

void	linkProgramObject (const std::string &_name) noexcept
	link the program Object from _name More...

void	toggleDebug () noexcept
	toggle debug mode More...

void	use (const std::string &_name) noexcept
	set active shader to name (if not found sets glProgramObject(0) More...

void	bindAttribute (const std::string &_programName, GLuint _index, const std::string &_attribName) noexcept
	bind an attribute at index by name More...

void	bindFragDataLocation (const std::string &_programName, GLuint _index, const std::string &_attribName) noexcept
	fragment shader output location More...

ShaderProgram *	operator[] (const std::string &_name) noexcept
	accessor to the shader program using the subscript operatoir More...

ShaderProgram *	operator[] (const char *_name) noexcept
	accessor to the shader program using the subscript operatoir More...

void	loadShader (const std::string &_shaderName, const std::string &_vert, const std::string &_frag, const std::string &_geo="", const bool _exitOnError=false) noexcept
	method to load shaders More...

bool	loadFromJson (const std::string &_fname) noexcept
	method to load multiple shaders from a json file More...

void	debugOn () noexcept
	Toggle debug mode on. More...

void	debugOff () noexcept
	Toggle debug mode off. More...

size_t	getNumShaders () const noexcept
	get the number of shaders stored More...

void	setShaderParamFromMat4 (const std::string &_paramName, Mat4 _p1) noexcept
	set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniformFromMat4 (const std::string &_registeredUniformName, Mat4 _p1) noexcept
	set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail More...

void	setShaderParamFromMat3 (const std::string &_paramName, Mat3 _p1) noexcept
	set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniformFromMat3 (const std::string &_paramName, Mat3 _p1) noexcept
	set the registered uniform from Max3x3 More...

void	setShaderParamFromVec4 (const std::string &_paramName, Vec4 _p1) noexcept
	set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniformVec4 (const std::string &_paramName, Vec4 _p1) noexcept
	set the pre-registered uniform from an Vec4 More...

void	setShaderParamFromColour (const std::string &_paramName, Colour _p1) noexcept
	set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniformFromColour (const std::string &_paramName, Colour _p1) noexcept
	set the pre-registered uniform from an Colour More...

void	setRegisteredUniformVec3 (const std::string &_paramName, Vec3 _p1) noexcept
	set the pre-registered uniform from an Vector More...

void	setRegisteredUniformVec2 (const std::string &_paramName, Vec2 _p1) noexcept
	set the pre-registered uniform from a Vector More...

void	setShaderParam1i (const std::string &_paramName, int _p1) noexcept
	set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform1i (const std::string &_paramName, int _p1) noexcept
	set the pre-registered uniform More...

void	setShaderParam1f (const std::string &_paramName, float _p1) noexcept
	set a shader param by name for 1 float param note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform1f (const std::string &_paramName, float _p1) noexcept
	set the pre-registered uniform More...

void	setShaderParam2f (const std::string &_paramName, float _p1, float _p2) noexcept
	set a shader param by name for 2 float params note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform2f (const std::string &_paramName, float _p1, float _p2) noexcept
	set the pre-registered uniform More...

void	setShaderParam3f (const std::string &_paramName, float _p1, float _p2, float _p3) noexcept
	set a shader param by name for 3 float params note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform3f (const std::string &_paramName, float _p1, float _p2, float _p3) noexcept
	set the pre-registered uniform More...

void	setShaderParam4f (const std::string &_paramName, float _p1, float _p2, float _p3, float _p4) noexcept
	set a shader param by name for 4 float params note that the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform4f (const std::string &_paramName, float _p1, float _p2, float _p3, float _p4) noexcept
	set the pre-registered uniform More...

void	printProperties () const noexcept
	print the properties of the currently active shader More...

void	reset () noexcept
	reset the Shader manager which will delete all shader objects More...

GLint	getAttribLocation (const std::string &_shaderName, const std::string &_paramName) noexcept
	return the index to the shader attribute location More...

void	loadShaderSource (std::string _shaderName, std::string _sourceFile) noexcept
	Load shader source from text file the path will be relative from current dir unless a full path is specified. More...

void	loadShaderSourceFromString (const std::string &_shaderName, const std::string &_string) noexcept
	load shader from a C string, useful for including code in headers etc More...

void	useNullProgram () noexcept
	use the null program (this will turn off any shaders), if using some drivers this will go to the fixed function pipeline More...

GLuint	getUniformBlockIndex (const std::string &_uniformBlockName) const noexcept
	grab the index of the unifrom block, this may not be supported on all GPU's More...

void	registerUniform (const std::string &_shaderName, const std::string &_uniformName) noexcept
	register a uniform so we don't have to call glGet functions when using More...

void	autoRegisterUniforms (const std::string &_shaderName) noexcept
	will parse the shader source and find any uniforms it can and register them More...

void	printRegisteredUniforms (const std::string &_shader) const noexcept
	debug print any registered uniforms More...

void	setUniform (const std::string &_paramName, Real _v0) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Real _v0) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Real _v0, Real _v1) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Real _v0, Real _v1) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Real _v0, Real _v1, Real _v2) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Real _v0, Real _v1, Real _v2) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Real _v0, Real _v1, Real _v2, Real _v3) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Real _v0, Real _v1, Real _v2, Real _v3) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, GLint _v0) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, GLint _v0) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, GLint _v0, GLint _v1) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, GLint _v0, GLint _v1) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, GLint _v0, GLint _v1, GLint _v2) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, GLint _v0, GLint _v1, GLint _v2) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, GLint _v0, GLint _v1, GLint _v2, GLint _v3) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, GLint _v0, GLint _v1, GLint _v2, GLint _v3) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Colour _v0) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Colour _v0) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Vec2 _v0) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Vec2 _v0) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Vec3 _v0) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Vec3 _v0) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Vec4 _v0) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Vec4 _v0) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Mat3 _v0) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Mat3 _v0) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

void	setUniform (const std::string &_paramName, Mat4 _v0) noexcept
	overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail More...

void	setRegisteredUniform (const std::string &_paramName, Mat4 _v0) noexcept
	overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail More...

GLuint	getShaderID (const std::string &_shaderName) noexcept
	method to return a shader ID More...

ngl::Shader *	getShader (const std::string &_shaderName) noexcept
	method to return the specified shader object More...

Public Member Functions inherited from ngl::Singleton< ShaderLib >
	Singleton (const Singleton &)=delete

Singleton &	operator= (const Singleton &)=delete

Protected Member Functions
ShaderType	getShaderType (const std::string &type) noexcept
	get shader type from string (used for json parsing) More...

void	loadTextShaders () noexcept
	this will load the pre-defined text rendering shaders these are stored in the file src/shaders/TextShaders.h More...

void	loadColourShaders () noexcept
	this will load the pre-defined text rendering shaders these are stored in the file src/shaders/ColourShaders.h More...

void	loadDiffuseShaders () noexcept
	this will load the pre-defined text rendering shaders these are stored in the file src/shaders/DiffuseShaders.h More...

void	loadToonShaders () noexcept
	this will load the pre-defined text rendering shaders these are stored in the file src/shaders/ToonShaders.h More...

	ShaderLib () noexcept
	default ctor private as a singleton More...

virtual	~ShaderLib ()
	default ctor private as a singleton More...

	ShaderLib (const ShaderLib &)=delete
	copy ctor private as singleton More...

Protected Member Functions inherited from ngl::Singleton< ShaderLib >
	Singleton ()
	Constructor. More...

virtual	~Singleton ()
	Destructor. More...

Protected Attributes
std::unordered_map< std::string, ShaderProgram * >	m_shaderPrograms
	a map of shader Programs using name as key to shader pointer More...

std::unordered_map< std::string, Shader * >	m_shaders
	map of shaders using name as key More...

ShaderProgram *	m_nullProgram
	null ShaderProgram so we can return when shader not know; More...

std::string	m_currentShader
	the name of the currently active shader More...

bool	m_debugState
	flag to indicate the debug state More...

unsigned int	m_numShaders
	the nunmber of shaders loaded More...

Friends
class	Singleton< ShaderLib >

Additional Inherited Members
Static Public Member Functions inherited from ngl::Singleton< ShaderLib >
static ShaderLib *	instance ()
	Get the instance. More...

Static Protected Member Functions inherited from ngl::Singleton< ShaderLib >
static void	killSingleton ()

Static Protected Attributes inherited from ngl::Singleton< ShaderLib >
static ShaderLib *	s_instance
	unique instance of the singleton More...

Detailed Description

Singleton Class to init and Use GLSL Shaders the class stores the shaders as a map of shader objects and they can be found by name Updated to use templated singleton Updated to use a map to store the shaders by name and hence removed the name from the ShaderObject Class Also Added methods to adjust shader parameters by shader / param name, at present use only 1-4 Floats and a few others need to think of a better way of doing this.

Author: Jonathan Macey

Version: 3.0

Date: Last Revision 20/04/10 used templated singleton

Definition at line 55 of file ShaderLib.h.

Constructor & Destructor Documentation

ngl::ShaderLib::ShaderLib ( )

protectednoexcept

default ctor private as a singleton

Definition at line 231 of file ShaderLib.cpp.

References loadColourShaders(), loadDiffuseShaders(), loadTextShaders(), loadToonShaders(), m_currentShader, m_debugState, m_nullProgram, m_numShaders, and m_shaderPrograms.

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virtual ngl::ShaderLib::~ShaderLib ( )

inlineprotectedvirtual

default ctor private as a singleton

Definition at line 668 of file ShaderLib.h.

ngl::ShaderLib::ShaderLib ( const ShaderLib & )

protecteddelete

copy ctor private as singleton

Member Function Documentation

void ngl::ShaderLib::attachShader	(	const std::string &	_name,
		ShaderType	_type
	)

noexcept

attatch a Shader to the ShaderProgram referenced by _name

Parameters

_name the name of the ShaderProgram to attach

Definition at line 279 of file ShaderLib.cpp.

References m_debugState, and m_shaders.

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void ngl::ShaderLib::attachShaderToProgram	(	const std::string &	_program,
		const std::string &	_shader
	)

noexcept

attatch a Shader to the ShaderProgram referenced by _name

Parameters

_program	the name of the ShaderProgram to attach to
_shader	the name of the Shader to attach to Program

Definition at line 308 of file ShaderLib.cpp.

References m_debugState, m_shaderPrograms, and m_shaders.

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void ngl::ShaderLib::autoRegisterUniforms ( const std::string & _shaderName )

noexcept

will parse the shader source and find any uniforms it can and register them

Parameters

[in] _shaderName the name of the shader to set the param for

Definition at line 544 of file ShaderLib.cpp.

References m_shaderPrograms.

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void ngl::ShaderLib::bindAttribute	(	const std::string &	_programName,
		GLuint	_index,
		const std::string &	_attribName
	)

noexcept

bind an attribute at index by name

Parameters

_programName	the name of the ShaderProgram to use
_index	the attribute index to bind
_attribName	the name of the attribute in the shader to be bound to this index

Note: if using glsl > 400 we can use layout qualifiers and don't need this

Definition at line 559 of file ShaderLib.cpp.

References m_shaderPrograms.

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void ngl::ShaderLib::bindFragDataLocation	(	const std::string &	_programName,
		GLuint	_index,
		const std::string &	_attribName
	)

noexcept

fragment shader output location

Parameters

_programName	the name of the ShaderProgram to use
_index	the attribute index to bind
_attribName	the name of the attribute in the shader to be bound to this index

Note: if using glsl > 420 we can use layout qualifiers and don't need this

Definition at line 572 of file ShaderLib.cpp.

References m_shaderPrograms.

void ngl::ShaderLib::compileShader ( const std::string & _name )

noexcept

compile the shader from _name

Parameters

_name the name of the ShaderProgram to compile

Definition at line 287 of file ShaderLib.cpp.

References m_shaders.

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void ngl::ShaderLib::createShaderProgram ( const std::string & _name )

noexcept

create an empty ShaderProgram for us to attach shaders etc to

Parameters

_name the name of the ShaderProgram to link

Definition at line 301 of file ShaderLib.cpp.

References m_debugState, and m_shaderPrograms.

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void ngl::ShaderLib::debugOff ( )

inlinenoexcept

Toggle debug mode off.

Definition at line 156 of file ShaderLib.h.

void ngl::ShaderLib::debugOn ( )

inlinenoexcept

Toggle debug mode on.

Definition at line 152 of file ShaderLib.h.

GLint ngl::ShaderLib::getAttribLocation	(	const std::string &	_shaderName,
		const std::string &	_paramName
	)

noexcept

return the index to the shader attribute location

Parameters

_shaderName	the name of the shader program
_paramName	the name of the parameter to find

Returns: the Attrib index location

Definition at line 206 of file ShaderLib.cpp.

References glGetAttribLocation, and m_shaderPrograms.

size_t ngl::ShaderLib::getNumShaders ( ) const

inlinenoexcept

get the number of shaders stored

Returns: the number of shaders

Definition at line 161 of file ShaderLib.h.

GLuint ngl::ShaderLib::getProgramID ( const std::string & _name )

noexcept

get the Program ID of the GL Program by name

Parameters

_name the name of the ShaderProgram to find

Returns: the id of the program found or -1 on error

Definition at line 528 of file ShaderLib.cpp.

References m_shaderPrograms.

ngl::Shader * ngl::ShaderLib::getShader ( const std::string & _shaderName )

noexcept

method to return the specified shader object

Parameters

_shaderName the name of the shader to return

Definition at line 262 of file ShaderLib.cpp.

References m_currentShader, and m_shaders.

GLuint ngl::ShaderLib::getShaderID ( const std::string & _shaderName )

noexcept

method to return a shader ID

Parameters

_shaderName the name of the shader who's ID to return

Definition at line 246 of file ShaderLib.cpp.

References m_currentShader, and m_shaders.

ShaderType ngl::ShaderLib::getShaderType ( const std::string & type )

protectednoexcept

get shader type from string (used for json parsing)

Definition at line 345 of file ShaderLib.cpp.

References ngl::COMPUTE, ngl::FRAGMENT, ngl::GEOMETRY, ngl::NONE, ngl::TESSCONTROL, ngl::TESSEVAL, and ngl::VERTEX.

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GLuint ngl::ShaderLib::getUniformBlockIndex ( const std::string & _uniformBlockName ) const

noexcept

grab the index of the unifrom block, this may not be supported on all GPU's

Parameters

_uniformBlockName the name of the block to get the index for

Returns: the index of the block or -1 on error

Definition at line 639 of file ShaderLib.cpp.

References m_currentShader, and m_shaderPrograms.

void ngl::ShaderLib::linkProgramObject ( const std::string & _name )

noexcept

link the program Object from _name

Parameters

_name the name of the ShaderProgram to link

Definition at line 492 of file ShaderLib.cpp.

References m_shaderPrograms.

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void ngl::ShaderLib::loadColourShaders ( )

protectednoexcept

this will load the pre-defined text rendering shaders these are stored in the file src/shaders/ColourShaders.h

Definition at line 689 of file ShaderLib.cpp.

References attachShader(), attachShaderToProgram(), autoRegisterUniforms(), bindAttribute(), colourFragmentShader, colourVertexShader, compileShader(), createShaderProgram(), ngl::FRAGMENT, linkProgramObject(), loadShaderSourceFromString(), use(), and ngl::VERTEX.

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void ngl::ShaderLib::loadDiffuseShaders ( )

protectednoexcept

this will load the pre-defined text rendering shaders these are stored in the file src/shaders/DiffuseShaders.h

Definition at line 715 of file ShaderLib.cpp.

References attachShader(), attachShaderToProgram(), autoRegisterUniforms(), bindAttribute(), compileShader(), createShaderProgram(), diffuseFragmentShader, diffuseVertexShader, ngl::FRAGMENT, linkProgramObject(), loadShaderSourceFromString(), use(), and ngl::VERTEX.

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bool ngl::ShaderLib::loadFromJson ( const std::string & _fname )

noexcept

method to load multiple shaders from a json file

Parameters

[in] _shaderName the name of the json resource file

Definition at line 372 of file ShaderLib.cpp.

References attachShader(), attachShaderToProgram(), compileShader(), createShaderProgram(), getShaderType(), linkProgramObject(), loadShaderSourceFromString(), and SizeType.

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void ngl::ShaderLib::loadShader	(	const std::string &	_shaderName,
		const std::string &	_vert,
		const std::string &	_frag,
		const std::string &	_geo = `""`,
		const bool	_exitOnError = `false`
	)

noexcept

method to load shaders

Parameters

[in]	_shaderName	the name of the shader to be stored in the Manager
[in]	_vert	the vertex shader to load
[in]	_frag	the fragment shader to load
[in]	_geo	an optional geo shader to load
[in]	_exitOnError	exit if there is an error in the shader

Definition at line 167 of file ShaderLib.cpp.

References ngl::FRAGMENT, ngl::GEOMETRY, NGL_UNUSED, and ngl::VERTEX.

void ngl::ShaderLib::loadShaderSource	(	std::string	_shaderName,
		std::string	_sourceFile
	)

noexcept

Load shader source from text file the path will be relative from current dir unless a full path is specified.

Parameters

_shaderName	the name of the shader program
_sourceFile	the path of the file to load

Definition at line 332 of file ShaderLib.cpp.

References m_shaders.

void ngl::ShaderLib::loadShaderSourceFromString	(	const std::string &	_shaderName,
		const std::string &	_string
	)

noexcept

load shader from a C string, useful for including code in headers etc

Parameters

_shaderName	the name of the shader program
_string	the text array of shader data

Definition at line 477 of file ShaderLib.cpp.

References m_shaders.

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void ngl::ShaderLib::loadTextShaders ( )

protectednoexcept

this will load the pre-defined text rendering shaders these are stored in the file src/shaders/TextShaders.h

Definition at line 660 of file ShaderLib.cpp.

References attachShader(), attachShaderToProgram(), autoRegisterUniforms(), bindAttribute(), compileShader(), createShaderProgram(), ngl::FRAGMENT, linkProgramObject(), loadShaderSourceFromString(), textFragmentShader, textVertexShader, use(), and ngl::VERTEX.

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void ngl::ShaderLib::loadToonShaders ( )

protectednoexcept

this will load the pre-defined text rendering shaders these are stored in the file src/shaders/ToonShaders.h

Definition at line 743 of file ShaderLib.cpp.

References attachShader(), attachShaderToProgram(), autoRegisterUniforms(), bindAttribute(), compileShader(), createShaderProgram(), ngl::FRAGMENT, linkProgramObject(), loadShaderSourceFromString(), toonFragmentShader, toonVertexShader, use(), and ngl::VERTEX.

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ShaderProgram * ngl::ShaderLib::operator[] ( const std::string & _name )

noexcept

accessor to the shader program using the subscript operatoir

Parameters

_name the name of the ShaderProgram to use

Returns: a ShaderProgram if name exist else null shader program

Definition at line 594 of file ShaderLib.cpp.

References m_currentShader, m_nullProgram, and m_shaderPrograms.

ShaderProgram * ngl::ShaderLib::operator[] ( const char * _name )

noexcept

accessor to the shader program using the subscript operatoir

Parameters

_name the name of the ShaderProgram to use

Returns: a ShaderProgram if name exist else null shader program

Definition at line 613 of file ShaderLib.cpp.

References m_currentShader, m_nullProgram, and m_shaderPrograms.

void ngl::ShaderLib::printProperties ( ) const

noexcept

print the properties of the currently active shader

Definition at line 781 of file ShaderLib.cpp.

References m_currentShader, and m_shaderPrograms.

void ngl::ShaderLib::printRegisteredUniforms ( const std::string & _shader ) const

noexcept

debug print any registered uniforms

Definition at line 771 of file ShaderLib.cpp.

References m_shaderPrograms.

void ngl::ShaderLib::registerUniform	(	const std::string &	_shaderName,
		const std::string &	_uniformName
	)

noexcept

register a uniform so we don't have to call glGet functions when using

Parameters

[in]	_shaderName	the name of the shader to set the param for
[in]	_uniformName	the name of the uniform to register

void ngl::ShaderLib::reset ( )

noexcept

reset the Shader manager which will delete all shader objects

Definition at line 195 of file ShaderLib.cpp.

References m_shaderPrograms, and m_shaders.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Real	_v0
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the float value of the parameter to set

Definition at line 806 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Real	_v0,
		Real	_v1
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the float value of the parameter to set
[in]	_v1	the float value of the parameter to set

Definition at line 816 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Real	_v0,
		Real	_v1,
		Real	_v2
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the float value of the parameter to set
[in]	_v1	the float value of the parameter to set
[in]	_v2	the float value of the parameter to set

Definition at line 827 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Real	_v0,
		Real	_v1,
		Real	_v2,
		Real	_v3
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the float value of the parameter to set
[in]	_v1	the float value of the parameter to set
[in]	_v2	the float value of the parameter to set
[in]	_v3	the float value of the parameter to set

Definition at line 836 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		GLint	_v0
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the int value of the parameter to set

Definition at line 845 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		GLint	_v0,
		GLint	_v1
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the int value of the parameter to set
[in]	_v1	the int value of the parameter to set

Definition at line 854 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		GLint	_v0,
		GLint	_v1,
		GLint	_v2
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the int value of the parameter to set
[in]	_v1	the int value of the parameter to set
[in]	_v2	the int value of the parameter to set

Definition at line 863 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		GLint	_v0,
		GLint	_v1,
		GLint	_v2,
		GLint	_v3
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the int value of the parameter to set
[in]	_v1	the int value of the parameter to set
[in]	_v2	the int value of the parameter to set
[in]	_v3	the int value of the parameter to set

Definition at line 872 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Colour	_v0
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Colour value of the parameter to set

Definition at line 881 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Vec2	_v0
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Vec2 value of the parameter to set

Definition at line 889 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Vec3	_v0
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Vec3 value of the parameter to set

Definition at line 897 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Vec4	_v0
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Vec4 value of the parameter to set

Definition at line 905 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Mat3	_v0
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Mat3 value of the parameter to set

Definition at line 915 of file ShaderLib.cpp.

References GL_FALSE, and m_currentShader.

void ngl::ShaderLib::setRegisteredUniform	(	const std::string &	_paramName,
		Mat4	_v0
	)

noexcept

overloaded method to set shader Uniforms that have been pre-registered using auto-register uniforms method must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Mat4 value of the parameter to set

Definition at line 925 of file ShaderLib.cpp.

References GL_FALSE, and m_currentShader.

void ngl::ShaderLib::setRegisteredUniform1f	(	const std::string &	_paramName,
		float	_p1
	)

noexcept

set the pre-registered uniform

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set

Definition at line 160 of file ShaderLib.cpp.

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void ngl::ShaderLib::setRegisteredUniform1i	(	const std::string &	_paramName,
		int	_p1
	)

noexcept

set the pre-registered uniform

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set

Definition at line 145 of file ShaderLib.cpp.

void ngl::ShaderLib::setRegisteredUniform2f	(	const std::string &	_paramName,
		float	_p1,
		float	_p2
	)

noexcept

set the pre-registered uniform

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set
[in]	_p2	the float value of the parameter to set

Definition at line 133 of file ShaderLib.cpp.

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void ngl::ShaderLib::setRegisteredUniform3f	(	const std::string &	_paramName,
		float	_p1,
		float	_p2,
		float	_p3
	)

noexcept

set the pre-registered uniform

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set
[in]	_p2	the float value of the parameter to set
[in]	_p3	the float value of the parameter to set

Definition at line 120 of file ShaderLib.cpp.

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void ngl::ShaderLib::setRegisteredUniform4f	(	const std::string &	_paramName,
		float	_p1,
		float	_p2,
		float	_p3,
		float	_p4
	)

noexcept

set the pre-registered uniform

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set
[in]	_p2	the float value of the parameter to set
[in]	_p3	the float value of the parameter to set

Definition at line 108 of file ShaderLib.cpp.

void ngl::ShaderLib::setRegisteredUniformFromColour	(	const std::string &	_paramName,
		Colour	_p1
	)

noexcept

set the pre-registered uniform from an Colour

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the vector to set from

Definition at line 82 of file ShaderLib.cpp.

void ngl::ShaderLib::setRegisteredUniformFromMat3	(	const std::string &	_paramName,
		Mat3	_p1
	)

noexcept

set the registered uniform from Max3x3

Parameters

[in]	_uniformName	the name of the uniform in the shader to set
[in]	_p1	the matrix to set from (float 16) value of the parameter to set

Definition at line 57 of file ShaderLib.cpp.

References GL_FALSE.

void ngl::ShaderLib::setRegisteredUniformFromMat4	(	const std::string &	_registeredUniformName,
		Mat4	_p1
	)

noexcept

set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_registeredUniformName	the name of the registered uniform in the shader to set
[in]	_p1	the matrix to set from (float 16) value of the parameter to set

Definition at line 45 of file ShaderLib.cpp.

References GL_FALSE.

void ngl::ShaderLib::setRegisteredUniformVec2	(	const std::string &	_paramName,
		Vec2	_p1
	)

noexcept

set the pre-registered uniform from a Vector

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the vector to set from

Definition at line 93 of file ShaderLib.cpp.

void ngl::ShaderLib::setRegisteredUniformVec3	(	const std::string &	_paramName,
		Vec3	_p1
	)

noexcept

set the pre-registered uniform from an Vector

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the vector to set from

Definition at line 87 of file ShaderLib.cpp.

void ngl::ShaderLib::setRegisteredUniformVec4	(	const std::string &	_paramName,
		Vec4	_p1
	)

noexcept

set the pre-registered uniform from an Vec4

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the vector to set from

Definition at line 69 of file ShaderLib.cpp.

void ngl::ShaderLib::setShaderParam1f	(	const std::string &	_paramName,
		float	_p1
	)

noexcept

set a shader param by name for 1 float param note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set

Definition at line 153 of file ShaderLib.cpp.

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void ngl::ShaderLib::setShaderParam1i	(	const std::string &	_paramName,
		int	_p1
	)

noexcept

set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set

Definition at line 138 of file ShaderLib.cpp.

void ngl::ShaderLib::setShaderParam2f	(	const std::string &	_paramName,
		float	_p1,
		float	_p2
	)

noexcept

set a shader param by name for 2 float params note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set
[in]	_p2	the float value of the parameter to set

Definition at line 126 of file ShaderLib.cpp.

void ngl::ShaderLib::setShaderParam3f	(	const std::string &	_paramName,
		float	_p1,
		float	_p2,
		float	_p3
	)

noexcept

set a shader param by name for 3 float params note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set
[in]	_p2	the float value of the parameter to set
[in]	_p3	the float value of the parameter to set

Definition at line 114 of file ShaderLib.cpp.

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void ngl::ShaderLib::setShaderParam4f	(	const std::string &	_paramName,
		float	_p1,
		float	_p2,
		float	_p3,
		float	_p4
	)

noexcept

set a shader param by name for 4 float params note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the float value of the parameter to set
[in]	_p2	the float value of the parameter to set
[in]	_p3	the float value of the parameter to set
[in]	_p4	the float value of the parameter to set

Definition at line 102 of file ShaderLib.cpp.

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void ngl::ShaderLib::setShaderParamFromColour	(	const std::string &	_paramName,
		Colour	_p1
	)

noexcept

set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the vector to set from (float 4) value of the parameter to set

Definition at line 75 of file ShaderLib.cpp.

void ngl::ShaderLib::setShaderParamFromMat3	(	const std::string &	_paramName,
		Mat3	_p1
	)

noexcept

set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the matrix to set from (float 16) value of the parameter to set

Definition at line 51 of file ShaderLib.cpp.

References GL_FALSE.

void ngl::ShaderLib::setShaderParamFromMat4	(	const std::string &	_paramName,
		Mat4	_p1
	)

noexcept

set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the matrix to set from (float 16) value of the parameter to set

Definition at line 39 of file ShaderLib.cpp.

References GL_FALSE.

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void ngl::ShaderLib::setShaderParamFromVec4	(	const std::string &	_paramName,
		Vec4	_p1
	)

noexcept

set a shader param by name for 1 int param note that the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the parameter in the shader to set
[in]	_p1	the vector to set from (float 4) value of the parameter to set

Definition at line 62 of file ShaderLib.cpp.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Real	_v0
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the float value of the parameter to set

Definition at line 802 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Real	_v0,
		Real	_v1
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the float value of the parameter to set
[in]	_v1	the float value of the parameter to set

Definition at line 812 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Real	_v0,
		Real	_v1,
		Real	_v2
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the float value of the parameter to set
[in]	_v1	the float value of the parameter to set
[in]	_v2	the float value of the parameter to set

Definition at line 822 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Real	_v0,
		Real	_v1,
		Real	_v2,
		Real	_v3
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the float value of the parameter to set
[in]	_v1	the float value of the parameter to set
[in]	_v2	the float value of the parameter to set
[in]	_v3	the float value of the parameter to set

Definition at line 832 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		GLint	_v0
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the int value of the parameter to set

Definition at line 841 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		GLint	_v0,
		GLint	_v1
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the int value of the parameter to set
[in]	_v1	the int value of the parameter to set

Definition at line 850 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		GLint	_v0,
		GLint	_v1,
		GLint	_v2
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the int value of the parameter to set
[in]	_v1	the int value of the parameter to set
[in]	_v2	the int value of the parameter to set

Definition at line 859 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		GLint	_v0,
		GLint	_v1,
		GLint	_v2,
		GLint	_v3
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the int value of the parameter to set
[in]	_v1	the int value of the parameter to set
[in]	_v2	the int value of the parameter to set
[in]	_v3	the int value of the parameter to set

Definition at line 868 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Colour	_v0
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the colour value of the parameter to set

Definition at line 877 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Vec2	_v0
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Vec3 value of the parameter to set

Definition at line 885 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Vec3	_v0
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Vec3 value of the parameter to set

Definition at line 893 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Vec4	_v0
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Vec4 value of the parameter to set

Definition at line 901 of file ShaderLib.cpp.

References m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Mat3	_v0
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Mat3 value of the parameter to set

Definition at line 910 of file ShaderLib.cpp.

References GL_FALSE, and m_currentShader.

void ngl::ShaderLib::setUniform	(	const std::string &	_paramName,
		Mat4	_v0
	)

noexcept

overloaded method to set shader Uniforms the shader must be the currently active shader of else this will fail

Parameters

[in]	_paramName	the name of the Uniform to set
[in]	_v0	the Mat4 value of the parameter to set

Definition at line 921 of file ShaderLib.cpp.

References GL_FALSE, and m_currentShader.

void ngl::ShaderLib::toggleDebug ( )

inlinenoexcept

toggle debug mode

Definition at line 98 of file ShaderLib.h.

void ngl::ShaderLib::use ( const std::string & _name )

noexcept

set active shader to name (if not found sets glProgramObject(0)

Parameters

_name the name of the ShaderProgram to use

Definition at line 507 of file ShaderLib.cpp.

References glUseProgram, m_currentShader, and m_shaderPrograms.

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void ngl::ShaderLib::useNullProgram ( )

noexcept

use the null program (this will turn off any shaders), if using some drivers this will go to the fixed function pipeline

Definition at line 632 of file ShaderLib.cpp.

References m_currentShader, m_nullProgram, and ngl::ShaderProgram::use().

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Friends And Related Function Documentation

friend class Singleton< ShaderLib >

friend

Definition at line 57 of file ShaderLib.h.

Member Data Documentation

std::string ngl::ShaderLib::m_currentShader

protected

the name of the currently active shader

Definition at line 652 of file ShaderLib.h.

bool ngl::ShaderLib::m_debugState

protected

flag to indicate the debug state

Definition at line 656 of file ShaderLib.h.

ShaderProgram* ngl::ShaderLib::m_nullProgram

protected

null ShaderProgram so we can return when shader not know;

Definition at line 648 of file ShaderLib.h.

unsigned int ngl::ShaderLib::m_numShaders

protected

the nunmber of shaders loaded

Definition at line 660 of file ShaderLib.h.

std::unordered_map<std::string,ShaderProgram *> ngl::ShaderLib::m_shaderPrograms

protected

a map of shader Programs using name as key to shader pointer

Definition at line 640 of file ShaderLib.h.

std::unordered_map<std::string,Shader *> ngl::ShaderLib::m_shaders

protected

map of shaders using name as key

Definition at line 644 of file ShaderLib.h.

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

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation