This class is responsible for managing shader programs. More...

#include <Graphic3d_ShaderProgram.hxx>

Inheritance diagram for Graphic3d_ShaderProgram:

Public Types
enum	ShaderName { ShaderName_UNKNOWN, ShaderName_Phong }
	The list of built-in GLSL programs. More...

Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object. More...

Public Member Functions
	Graphic3d_ShaderProgram ()
	Creates new empty program object. More...

	Graphic3d_ShaderProgram (const Graphic3d_ShaderProgram::ShaderName theName)
	Creates program object from pre-defined shaders. Raises Standard_Failure exception if shader resources are unavailable. More...

virtual	~Graphic3d_ShaderProgram ()
	Releases resources of program object. More...

void	Destroy () const
	Releases resources of program object. More...

virtual Standard_Boolean	IsDone () const
	Checks if the program object is valid or not. More...

const TCollection_AsciiString &	GetId () const
	Returns unique ID used to manage resource in graphic driver. More...

const TCollection_AsciiString &	Header () const
	Returns GLSL header (version code and extensions). More...

void	SetHeader (const TCollection_AsciiString &theHeader)
	Setup GLSL header containing language version code and used extensions. Will be prepended to the very beginning of the source code. Example: More...

Standard_Boolean	AttachShader (const Handle< Graphic3d_ShaderObject > &theShader)
	Attaches shader object to the program object. More...

Standard_Boolean	DetachShader (const Handle< Graphic3d_ShaderObject > &theShader)
	Detaches shader object from the program object. More...

const Graphic3d_ShaderObjectList &	ShaderObjects () const
	Returns list of attached shader objects. More...

const Graphic3d_ShaderVariableList &	Variables () const
	The list of currently pushed but not applied custom uniform variables. This list is automatically cleared after applying to GLSL program. More...

const Graphic3d_ShaderAttributeList &	VertexAttributes () const
	Return the list of custom vertex attributes. More...

void	SetVertexAttributes (const Graphic3d_ShaderAttributeList &theAttributes)
	Assign the list of custom vertex attributes. Should be done before GLSL program initialization. More...

template<class T >
Standard_Boolean	PushVariable (const TCollection_AsciiString &theName, const T &theValue)
	Pushes custom uniform variable to the program. The list of pushed variables is automatically cleared after applying to GLSL program. Thus after program recreation even unchanged uniforms should be pushed anew. More...

void	ClearVariables ()
	Removes all custom uniform variables from the program. More...

Standard_Boolean	PushVariableFloat (const TCollection_AsciiString &theName, const float theValue)
	Pushes float uniform. More...

Standard_Boolean	PushVariableVec2 (const TCollection_AsciiString &theName, const Graphic3d_Vec2 &theValue)
	Pushes vec2 uniform. More...

Standard_Boolean	PushVariableVec3 (const TCollection_AsciiString &theName, const Graphic3d_Vec3 &theValue)
	Pushes vec3 uniform. More...

Standard_Boolean	PushVariableVec4 (const TCollection_AsciiString &theName, const Graphic3d_Vec4 &theValue)
	Pushes vec4 uniform. More...

Standard_Boolean	PushVariableInt (const TCollection_AsciiString &theName, const int theValue)
	Pushes int uniform. More...

Standard_Boolean	PushVariableVec2i (const TCollection_AsciiString &theName, const Graphic3d_Vec2i &theValue)
	Pushes vec2i uniform. More...

Standard_Boolean	PushVariableVec3i (const TCollection_AsciiString &theName, const Graphic3d_Vec3i &theValue)
	Pushes vec3i uniform. More...

Standard_Boolean	PushVariableVec4i (const TCollection_AsciiString &theName, const Graphic3d_Vec4i &theValue)
	Pushes vec4i uniform. More...

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor. More...

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing. More...

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter. More...

virtual	~Standard_Transient ()
	Destructor must be virtual. More...

virtual void	Delete () const
	Memory deallocator for transient classes. More...

virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object. More...

Standard_Boolean	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type. More...

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName. More...

Standard_Boolean	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean	IsKind (const Standard_CString theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More...

Standard_Integer	GetRefCount () const
	Get the reference counter of this object. More...

void	IncrementRefCounter () const
	Increments the reference counter of this object. More...

Standard_Integer	DecrementRefCounter () const
	Decrements the reference counter of this object; returns the decremented value. More...

Static Public Member Functions
static const TCollection_AsciiString &	ShadersFolder ()
	The path to GLSL programs determined from CSF_ShadersDirectory or CASROOT environment variables. More...

Static Public Member Functions inherited from Standard_Transient
static const char *	get_type_name ()
	Returns a type descriptor about this object. More...

static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class. More...

Detailed Description

This class is responsible for managing shader programs.

Member Enumeration Documentation

enum Graphic3d_ShaderProgram::ShaderName

The list of built-in GLSL programs.

Enumerator
ShaderName_UNKNOWN	undefined program
ShaderName_Phong	per-pixel lighting (Phong shading)

Constructor & Destructor Documentation

Graphic3d_ShaderProgram::Graphic3d_ShaderProgram ( )

Creates new empty program object.

Graphic3d_ShaderProgram::Graphic3d_ShaderProgram ( const Graphic3d_ShaderProgram::ShaderName theName )

Creates program object from pre-defined shaders. Raises Standard_Failure exception if shader resources are unavailable.

virtual Graphic3d_ShaderProgram::~Graphic3d_ShaderProgram ( )

virtual

Releases resources of program object.

Member Function Documentation

Standard_Boolean Graphic3d_ShaderProgram::AttachShader ( const Handle< Graphic3d_ShaderObject > & theShader )

Attaches shader object to the program object.

void Graphic3d_ShaderProgram::ClearVariables ( )

Removes all custom uniform variables from the program.

void Graphic3d_ShaderProgram::Destroy ( ) const

Releases resources of program object.

Standard_Boolean Graphic3d_ShaderProgram::DetachShader ( const Handle< Graphic3d_ShaderObject > & theShader )

Detaches shader object from the program object.

const TCollection_AsciiString& Graphic3d_ShaderProgram::GetId ( ) const

inline

Returns unique ID used to manage resource in graphic driver.

const TCollection_AsciiString& Graphic3d_ShaderProgram::Header ( ) const

inline

Returns GLSL header (version code and extensions).

virtual Standard_Boolean Graphic3d_ShaderProgram::IsDone ( ) const

virtual

Checks if the program object is valid or not.

template<class T >

Standard_Boolean Graphic3d_ShaderProgram::PushVariable	(	const TCollection_AsciiString &	theName,
		const T &	theValue
	)

inline

Pushes custom uniform variable to the program. The list of pushed variables is automatically cleared after applying to GLSL program. Thus after program recreation even unchanged uniforms should be pushed anew.

Standard_Boolean Graphic3d_ShaderProgram::PushVariableFloat	(	const TCollection_AsciiString &	theName,
		const float	theValue
	)

inline

Pushes float uniform.

Standard_Boolean Graphic3d_ShaderProgram::PushVariableInt	(	const TCollection_AsciiString &	theName,
		const int	theValue
	)

inline

Pushes int uniform.

Standard_Boolean Graphic3d_ShaderProgram::PushVariableVec2	(	const TCollection_AsciiString &	theName,
		const Graphic3d_Vec2 &	theValue
	)

inline

Pushes vec2 uniform.

Standard_Boolean Graphic3d_ShaderProgram::PushVariableVec2i	(	const TCollection_AsciiString &	theName,
		const Graphic3d_Vec2i &	theValue
	)

inline

Pushes vec2i uniform.

Standard_Boolean Graphic3d_ShaderProgram::PushVariableVec3	(	const TCollection_AsciiString &	theName,
		const Graphic3d_Vec3 &	theValue
	)

inline

Pushes vec3 uniform.

Standard_Boolean Graphic3d_ShaderProgram::PushVariableVec3i	(	const TCollection_AsciiString &	theName,
		const Graphic3d_Vec3i &	theValue
	)

inline

Pushes vec3i uniform.

Standard_Boolean Graphic3d_ShaderProgram::PushVariableVec4	(	const TCollection_AsciiString &	theName,
		const Graphic3d_Vec4 &	theValue
	)

inline

Pushes vec4 uniform.

Standard_Boolean Graphic3d_ShaderProgram::PushVariableVec4i	(	const TCollection_AsciiString &	theName,
		const Graphic3d_Vec4i &	theValue
	)

inline

Pushes vec4i uniform.

void Graphic3d_ShaderProgram::SetHeader ( const TCollection_AsciiString & theHeader )

inline

Setup GLSL header containing language version code and used extensions. Will be prepended to the very beginning of the source code. Example:

#version 300 es

#extension GL_ARB_bindless_texture : require

void Graphic3d_ShaderProgram::SetVertexAttributes ( const Graphic3d_ShaderAttributeList & theAttributes )

Assign the list of custom vertex attributes. Should be done before GLSL program initialization.

const Graphic3d_ShaderObjectList& Graphic3d_ShaderProgram::ShaderObjects ( ) const

inline

Returns list of attached shader objects.

static const TCollection_AsciiString& Graphic3d_ShaderProgram::ShadersFolder ( )

static

The path to GLSL programs determined from CSF_ShadersDirectory or CASROOT environment variables.

Returns: the root folder with default GLSL programs.

const Graphic3d_ShaderVariableList& Graphic3d_ShaderProgram::Variables ( ) const

inline

The list of currently pushed but not applied custom uniform variables. This list is automatically cleared after applying to GLSL program.

const Graphic3d_ShaderAttributeList& Graphic3d_ShaderProgram::VertexAttributes ( ) const

inline

Return the list of custom vertex attributes.

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

Graphic3d_ShaderProgram.hxx

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation