Specialisation of HighLevelGpuProgram to encapsulate shader objects obtained from compiled shaders written in the OpenGL Shader Language (GLSL). More...

#include <OgreGLSLShader.h>

Inheritance diagram for Ogre::GLSLShader:

Classes
class	CmdAttach
	Command object for attaching another GLSL Program. More...

class	CmdColumnMajorMatrices
	Command object for setting matrix packing in column-major order. More...

class	CmdInputOperationType
	Command object for setting the input operation type (geometry shader only) More...

class	CmdMaxOutputVertices
	Command object for setting the maximum output vertices (geometry shader only) More...

class	CmdOutputOperationType
	Command object for setting the output operation type (geometry shader only) More...

class	CmdPreprocessorDefines
	Command object for setting macro defines. More...

Public Member Functions
	GLSLShader (ResourceManager creator, const String &name, ResourceHandle handle, const String &group, bool isManual, ManualResourceLoader loader)

	~GLSLShader () override

GpuProgram *	_getBindingDelegate () override
	Since GLSL has no assembly, use this shader for binding. More...

void	attachChildShader (const String &name)
	Attach another GLSL Shader to this one. More...

void	attachToProgramObject (const GLuint programObject)

void	bind ()
	Bind the shader in OpenGL. More...

void	bindParameters (GpuProgramParametersSharedPtr params, uint16 mask)
	Execute the param binding functions for this shader. More...

void	bindPassIterationParameters (GpuProgramParametersSharedPtr params)
	Execute the pass iteration param binding functions for this shader. More...

size_t	calculateSize () const override
	Calculate the size of a resource; this will only be called after 'load'. More...

bool	compile (const bool checkErrors=false)
	Compile source into shader object. More...

GpuProgramParametersSharedPtr	createParameters () override
	Overridden from GpuProgram. More...

void	detachFromProgramObject (const GLuint programObject)

String	getAttachedShaderNames () const

bool	getColumnMajorMatrices () const
	Gets whether matrix packed in column-major order. More...

GLuint	getGLShaderHandle () const

GLenum	getGLShaderType (GpuProgramType programType)
	Get OpenGL GLSL shader type from OGRE GPU program type. More...

virtual OperationType	getInputOperationType () const
	Returns the operation type that this geometry program expects to receive as input. More...

const String &	getLanguage () const override
	Overridden from GpuProgram. More...

virtual int	getMaxOutputVertices () const
	Returns the maximum number of vertices that this geometry program can output in a single run. More...

virtual OperationType	getOutputOperationType () const
	Returns the operation type that this geometry program will emit. More...

bool	getPassFogStates () const override
	Returns whether a fragment program wants fog state to be passed through fixed pipeline low level API rendering calls (default true, subclasses can override) More...

bool	getPassSurfaceAndLightStates () const override
	Returns whether a vertex program wants light and material states to be passed through fixed pipeline low level API rendering calls (default false, subclasses can override) More...

bool	getPassTransformStates () const override
	Overridden. More...

const String &	getPreprocessorDefines () const
	Sets the preprocessor defines use to compile the program. More...

GLuint	getShaderID () const
	Get the OGRE assigned shader ID. More...

String	getShaderTypeLabel (GpuProgramType programType)
	Get a string containing the name of the GLSL shader type correspondening to the OGRE GPU program type. More...

GLint	isLinked ()
	Return the shader link status. More...

void	setColumnMajorMatrices (bool columnMajor)
	Sets whether matrix packing in column-major order. More...

virtual void	setInputOperationType (OperationType operationType)
	Sets the operation type that this geometry program expects to receive. More...

void	setLinked (GLint flag)
	Set the shader link status. More...

virtual void	setMaxOutputVertices (int maxOutputVertices)
	Set the maximum number of vertices that a single run of this geometry program can emit. More...

virtual void	setOutputOperationType (OperationType operationType)
	Set the operation type that this geometry program will emit. More...

void	setPreprocessorDefines (const String &defines)
	Sets the preprocessor defines use to compile the program. More...

void	setReplaceVersionMacro (bool bReplace) override
	When true: More...

void	unbind ()
	Unbind the shader in OpenGL. More...

Public Member Functions inherited from Ogre::HighLevelGpuProgram
	HighLevelGpuProgram (ResourceManager creator, const String &name, ResourceHandle handle, const String &group, bool isManual=false, ManualResourceLoader loader=0)
	Constructor, should be used only by factory classes. More...

	~HighLevelGpuProgram () override

const GpuNamedConstants &	getConstantDefinitions () const override
	Get the full list of GpuConstantDefinition instances. More...

bool	getEnableIncludeHeader () const

bool	getUseHlmsParser () const

void	setEnableIncludeHeader (bool bEnable)
	Whether we should parse the source code looking for include files and embedding the file. More...

void	setUseHlmsParser (bool bUse)
	Whether we should run the shader through the Hlms parser. More...

Public Member Functions inherited from Ogre::GpuProgram
	GpuProgram (ResourceManager creator, const String &name, ResourceHandle handle, const String &group, bool isManual=false, ManualResourceLoader loader=0)

	~GpuProgram () override

bool	getBuildParametersFromReflection () const

virtual Vector3	getComputeGroupDimensions () const
	Returns the number of process groups dispatched by this compute program. More...

virtual GpuProgramParametersSharedPtr	getDefaultParameters ()
	Get a reference to the default parameters which are to be used for all uses of this program. More...

virtual const String &	getManualNamedConstantsFile () const
	Gets the name of a file from which to load named parameters mapping for a program which would not be able to derive named parameters itself. More...

virtual ushort	getNumberOfPosesIncluded () const
	Returns the number of simultaneous poses the vertex program can blend, for use in pose animation. More...

uint8	getNumClipDistances () const
	Retrieves the number of clip distances. See GpuProgram::setNumClipDistances. More...

virtual const String &	getSource () const
	Gets the assembler source for this program. More...

virtual const String &	getSourceFile () const
	Gets the name of the file used as source for this program. More...

virtual const String &	getSyntaxCode () const
	Gets the syntax code for this program e.g. More...

virtual GpuProgramType	getType () const
	Get the program type. More...

virtual bool	hasCompileError () const
	Did this program encounter a compile error when loading? More...

virtual bool	hasDefaultParameters () const
	Returns true if default parameters have been set up. More...

virtual bool	isAdjacencyInfoRequired () const
	Returns whether this geometry program requires adjacency information from the input primitives. More...

virtual bool	isMorphAnimationIncluded () const
	Returns whether a vertex program includes the required instructions to perform morph animation. More...

virtual bool	isPoseAnimationIncluded () const
	Returns whether a vertex program includes the required instructions to perform pose animation. More...

virtual bool	isSkeletalAnimationIncluded () const
	Returns whether a vertex program includes the required instructions to perform skeletal animation. More...

virtual bool	isSupported () const
	Returns whether this program can be supported on the current renderer and hardware. More...

virtual bool	isVertexTextureFetchRequired () const
	Returns whether this vertex program requires support for vertex texture fetch from the hardware. More...

virtual bool	isVpAndRtArrayIndexFromAnyShaderRequired () const
	Returns whether this program requires support for choosing viewport or render target index in any program or only geometry one. More...

virtual void	resetCompileError ()
	Reset a compile error if it occurred, allowing the load to be retried. More...

virtual void	setAdjacencyInfoRequired (bool r)
	Sets whether this geometry program requires adjacency information from the input primitives. More...

virtual void	setAutoReflectArrayBindingsInRootLayout (bool bReflectArrayRootLayouts)
	Set to true to reflects the shader looking for array bindings (e.g. More...

void	setBuildParametersFromReflection (bool buildParams)

virtual void	setComputeGroupDimensions (Vector3 dimensions)
	Sets the number of process groups dispatched by this compute program. More...

virtual void	setManualNamedConstants (const GpuNamedConstants &namedConstants)
	Allows you to manually provide a set of named parameter mappings to a program which would not be able to derive named parameters itself. More...

virtual void	setManualNamedConstantsFile (const String &paramDefFile)
	Specifies the name of a file from which to load named parameters mapping for a program which would not be able to derive named parameters itself. More...

virtual void	setMorphAnimationIncluded (bool included)
	Sets whether a vertex program includes the required instructions to perform morph animation. More...

void	setNumClipDistances (const uint8 numClipDistances)
	Sets the number of clip distances this shader uses. More...

virtual void	setPoseAnimationIncluded (ushort poseCount)
	Sets whether a vertex program includes the required instructions to perform pose animation. More...

void	setPrefabRootLayout (const PrefabRootLayout::PrefabRootLayout &prefab)
	Sets a prefab root layout, mostly meant for low level materials (e.g. More...

virtual void	setRootLayout (GpuProgramType t, const RootLayout &rootLayout)
	Sets a RootLayout programmatically, thus the shader source won't be parsed looking for one We will call validate() More...

virtual void	setSkeletalAnimationIncluded (bool included)
	Sets whether a vertex program includes the required instructions to perform skeletal animation. More...

virtual void	setSource (const String &source)
	Sets the source assembly for this program from an in-memory string. More...

virtual void	setSource (const String &source, const String &debugFilename)
	Sets the source assembly for this program from an in-memory string, while providing a path to a file, which can be needed/useful for debugging shaders (i.e. More...

virtual void	setSourceFile (const String &filename)
	Sets the filename of the source assembly for this program. More...

virtual void	setSyntaxCode (const String &syntax)
	Sets the syntax code for this program e.g. More...

virtual void	setType (GpuProgramType t)
	Set the program type (only valid before load) More...

virtual void	setVertexTextureFetchRequired (bool r)
	Sets whether this vertex program requires support for vertex texture fetch from the hardware. More...

virtual void	setVpAndRtArrayIndexFromAnyShaderRequired (bool r)
	Sets whether this program requires support for choosing viewport or render target index in any program or only geometry one. More...

virtual void	unsetRootLayout ()

Public Member Functions inherited from Ogre::Resource
	Resource (ResourceManager creator, const String &name, ResourceHandle handle, const String &group, bool isManual=false, ManualResourceLoader loader=0)
	Standard constructor. More...

virtual	~Resource ()
	Virtual destructor. More...

virtual void	_dirtyState ()
	Manually mark the state of this resource as having been changed. More...

virtual void	_fireLoadingComplete (bool wasBackgroundLoaded)
	Firing of loading complete event. More...

virtual void	_firePreparingComplete (bool wasBackgroundLoaded)
	Firing of preparing complete event. More...

virtual void	_fireUnloadingComplete ()
	Firing of unloading complete event. More...

virtual void	_notifyOrigin (const String &origin)
	Notify this resource of it's origin. More...

virtual void	addListener (Listener *lis)
	Register a listener on this resource. More...

virtual void	changeGroupOwnership (const String &newGroup)
	Change the resource group ownership of a Resource. More...

virtual void	escalateLoading ()
	Escalates the loading of a background loaded resource. More...

virtual ResourceManager *	getCreator ()
	Gets the manager which created this resource. More...

virtual const String &	getGroup () const
	Gets the group which this resource is a member of. More...

virtual ResourceHandle	getHandle () const

virtual LoadingState	getLoadingState () const
	Returns the current loading state. More...

virtual const String &	getName () const
	Gets resource name. More...

virtual const String &	getOrigin () const
	Get the origin of this resource, e.g. More...

virtual size_t	getSize () const
	Retrieves info about the size of the resource. More...

virtual size_t	getStateCount () const
	Returns the number of times this resource has changed state, which generally means the number of times it has been loaded. More...

virtual bool	isBackgroundLoaded () const
	Returns whether this Resource has been earmarked for background loading. More...

virtual bool	isLoaded () const
	Returns true if the Resource has been loaded, false otherwise. More...

virtual bool	isLoading () const
	Returns whether the resource is currently in the process of background loading. More...

virtual bool	isManuallyLoaded () const
	Is this resource manually loaded? More...

virtual bool	isPrepared () const
	Returns true if the Resource has been prepared, false otherwise. More...

virtual bool	isReloadable () const
	Returns true if the Resource is reloadable, false otherwise. More...

virtual void	load (bool backgroundThread=false)
	Loads the resource, if it is not already. More...

bool	markForReload ()

virtual void	prepare (bool backgroundThread=false)
	Prepares the resource for load, if it is not already. More...

virtual void	reload (LoadingFlags flags=LF_DEFAULT)
	Reloads the resource, if it is already loaded. More...

virtual void	removeListener (Listener *lis)
	Remove a listener on this resource. More...

virtual void	setBackgroundLoaded (bool bl)
	Tells the resource whether it is background loaded or not. More...

virtual void	setManuallyLoaded (bool isManual)
	Set "Is this resource manually loaded?". More...

virtual void	setToLoaded ()
	Change the Resource loading state to loaded. More...

virtual void	touch ()
	'Touches' the resource to indicate it has been used. More...

virtual void	unload ()
	Unloads the resource; this is not permanent, the resource can be reloaded later if required. More...

Public Member Functions inherited from Ogre::StringInterface
	StringInterface ()

virtual	~StringInterface ()
	Virtual destructor, see Effective C++. More...

virtual void	copyParametersTo (StringInterface *dest) const
	Method for copying this object's parameters to another object. More...

ParamDictionary *	getParamDictionary ()
	Retrieves the parameter dictionary for this class. More...

const ParamDictionary *	getParamDictionary () const

virtual String	getParameter (const String &name) const
	Generic parameter retrieval method. More...

const ParameterList &	getParameters () const
	Retrieves a list of parameters valid for this object. More...

virtual bool	setParameter (const String &name, const String &value)
	Generic parameter setting method. More...

virtual void	setParameterList (const NameValuePairList &paramList)
	Generic multiple parameter setting method. More...

Static Public Member Functions
static void	unbindAll ()

Static Public Member Functions inherited from Ogre::StringInterface
static void	cleanupDictionary ()
	Cleans up the static 'msDictionary' required to reset Ogre, otherwise the containers are left with invalid pointers, which will lead to a crash as soon as one of the ResourceManager implementers (e.g. More...

Additional Inherited Members
Public Types inherited from Ogre::Resource
enum	LoadingFlags { LF_DEFAULT = 0 , LF_INCLUDE_NON_RELOADABLE = 1 , LF_ONLY_UNREFERENCED = 2 , LF_ONLY_UNREFERENCED_INCLUDE_NON_RELOADABLE = 3 , LF_PRESERVE_STATE = 4 , LF_MARKED_FOR_RELOAD = 8 }
	Enum that allow to choose subset of unloaded/reloaded resources and to adjust reloading behavior. More...

enum	LoadingState { LOADSTATE_UNLOADED , LOADSTATE_LOADING , LOADSTATE_LOADED , LOADSTATE_UNLOADING , LOADSTATE_PREPARED , LOADSTATE_PREPARING , LOADSTATE_UNLOADED_MARKED_FOR_RELOAD }
	Enum identifying the loading state of the resource. More...

Public Attributes inherited from Ogre::Resource
	OGRE_AUTO_MUTEX

Static Public Attributes inherited from Ogre::HighLevelGpuProgram
static CmdEnableIncludeHeader	msEnableIncludeHeaderCmd

static CmdUseHlmsParser	msUseHlmsParser

Detailed Description

Specialisation of HighLevelGpuProgram to encapsulate shader objects obtained from compiled shaders written in the OpenGL Shader Language (GLSL).

Remarks: GLSL has no target assembler or entry point specification like DirectX 9 HLSL. Vertex and Fragment shaders only have one entry point called "main". When a shader is compiled, microcode is generated but can not be accessed by the application. GLSL also does not provide assembler low level output after compiling. The GL Render system assumes that the Gpu program is a GL GPU program so GLSLShader will create a GL3PlusShader for the low level implementation. The GLSLShader class will create a shader object and compile the source but will not create a program object. It's up to GL3PlusShader class to request a program object to link the shader object to.

Note: GLSL supports multiple modular shader objects that can be attached to one program object to form a single shader. This is supported through the "attach" material script command. All the modules to be attached are listed on the same line as the attach command separated by white space.

Constructor & Destructor Documentation

◆ GLSLShader()

Ogre::GLSLShader::GLSLShader	(	ResourceManager *	creator,
		const String &	name,
		ResourceHandle	handle,
		const String &	group,
		bool	isManual,
		ManualResourceLoader *	loader
	)

◆ ~GLSLShader()

Ogre::GLSLShader::~GLSLShader ( )

override

Member Function Documentation

◆ _getBindingDelegate()

GpuProgram* Ogre::GLSLShader::_getBindingDelegate ( )

inlineoverridevirtual

Since GLSL has no assembly, use this shader for binding.

Reimplemented from Ogre::HighLevelGpuProgram.

◆ attachChildShader()

void Ogre::GLSLShader::attachChildShader ( const String & name )

Attach another GLSL Shader to this one.

◆ attachToProgramObject()

void Ogre::GLSLShader::attachToProgramObject ( const GLuint programObject )

◆ bind()

void Ogre::GLSLShader::bind ( )

Bind the shader in OpenGL.

◆ bindParameters()

void Ogre::GLSLShader::bindParameters	(	GpuProgramParametersSharedPtr	params,
		uint16	mask
	)

Execute the param binding functions for this shader.

◆ bindPassIterationParameters()

void Ogre::GLSLShader::bindPassIterationParameters ( GpuProgramParametersSharedPtr params )

Execute the pass iteration param binding functions for this shader.

◆ calculateSize()

size_t Ogre::GLSLShader::calculateSize ( ) const

overridevirtual

Calculate the size of a resource; this will only be called after 'load'.

Reimplemented from Ogre::HighLevelGpuProgram.

◆ compile()

bool Ogre::GLSLShader::compile ( const bool checkErrors = false )

Compile source into shader object.

◆ createParameters()

GpuProgramParametersSharedPtr Ogre::GLSLShader::createParameters ( )

overridevirtual

Overridden from GpuProgram.

Reimplemented from Ogre::HighLevelGpuProgram.

◆ detachFromProgramObject()

void Ogre::GLSLShader::detachFromProgramObject ( const GLuint programObject )

◆ getAttachedShaderNames()

String Ogre::GLSLShader::getAttachedShaderNames ( ) const

inline

◆ getColumnMajorMatrices()

bool Ogre::GLSLShader::getColumnMajorMatrices ( ) const

inline

Gets whether matrix packed in column-major order.

◆ getGLShaderHandle()

GLuint Ogre::GLSLShader::getGLShaderHandle ( ) const

inline

◆ getGLShaderType()

GLenum Ogre::GLSLShader::getGLShaderType ( GpuProgramType programType )

Get OpenGL GLSL shader type from OGRE GPU program type.

◆ getInputOperationType()

virtual OperationType Ogre::GLSLShader::getInputOperationType ( ) const

inlinevirtual

Returns the operation type that this geometry program expects to receive as input.

◆ getLanguage()

const String& Ogre::GLSLShader::getLanguage ( ) const

overridevirtual

Overridden from GpuProgram.

Reimplemented from Ogre::GpuProgram.

◆ getMaxOutputVertices()

virtual int Ogre::GLSLShader::getMaxOutputVertices ( ) const

inlinevirtual

Returns the maximum number of vertices that this geometry program can output in a single run.

◆ getOutputOperationType()

virtual OperationType Ogre::GLSLShader::getOutputOperationType ( ) const

inlinevirtual

Returns the operation type that this geometry program will emit.

◆ getPassFogStates()

bool Ogre::GLSLShader::getPassFogStates ( ) const

overridevirtual

Returns whether a fragment program wants fog state to be passed through fixed pipeline low level API rendering calls (default true, subclasses can override)

Remarks: On DirectX, shader model 2 and earlier continues to have fixed-function fog applied to it, so fog state is still passed (you should disable fog on the pass if you want to perform fog in the shader). In OpenGL it is also common to be able to access the fixed-function fog state inside the shader.

Reimplemented from Ogre::GpuProgram.

◆ getPassSurfaceAndLightStates()

bool Ogre::GLSLShader::getPassSurfaceAndLightStates ( ) const

overridevirtual

Returns whether a vertex program wants light and material states to be passed through fixed pipeline low level API rendering calls (default false, subclasses can override)

Remarks: Most vertex programs do not need this material information, however GLSL shaders can refer to this material and lighting state so enable this option

Reimplemented from Ogre::GpuProgram.

◆ getPassTransformStates()

bool Ogre::GLSLShader::getPassTransformStates ( ) const

overridevirtual

Overridden.

Reimplemented from Ogre::GpuProgram.

◆ getPreprocessorDefines()

const String& Ogre::GLSLShader::getPreprocessorDefines ( ) const

inline

Sets the preprocessor defines use to compile the program.

◆ getShaderID()

GLuint Ogre::GLSLShader::getShaderID ( ) const

inline

Get the OGRE assigned shader ID.

◆ getShaderTypeLabel()

String Ogre::GLSLShader::getShaderTypeLabel ( GpuProgramType programType )

Get a string containing the name of the GLSL shader type correspondening to the OGRE GPU program type.

◆ isLinked()

GLint Ogre::GLSLShader::isLinked ( )

inline

Return the shader link status.

Only used for separable programs.

◆ setColumnMajorMatrices()

void Ogre::GLSLShader::setColumnMajorMatrices ( bool columnMajor )

inline

Sets whether matrix packing in column-major order.

◆ setInputOperationType()

virtual void Ogre::GLSLShader::setInputOperationType ( OperationType operationType )

inlinevirtual

Sets the operation type that this geometry program expects to receive.

◆ setLinked()

void Ogre::GLSLShader::setLinked ( GLint flag )

inline

Set the shader link status.

Only used for separable programs.

◆ setMaxOutputVertices()

virtual void Ogre::GLSLShader::setMaxOutputVertices ( int maxOutputVertices )

inlinevirtual

Set the maximum number of vertices that a single run of this geometry program can emit.

◆ setOutputOperationType()

virtual void Ogre::GLSLShader::setOutputOperationType ( OperationType operationType )

inlinevirtual

Set the operation type that this geometry program will emit.

◆ setPreprocessorDefines()

void Ogre::GLSLShader::setPreprocessorDefines ( const String & defines )

Sets the preprocessor defines use to compile the program.

◆ setReplaceVersionMacro()

void Ogre::GLSLShader::setReplaceVersionMacro ( bool bReplace )

overridevirtual

When true:

On OpenGL: Finds the first occurrence of "ogre_glsl_ver_xxx" and only keeps "xxx" e.g. ogre_glsl_ver_330 becomes 330, ogre_glsl_ver_430 becomes 430

On Vulkan: Finds the first occurrence of "ogre_glsl_ver_xxx" and replaces it with "450"

This is disabled by default because we must scan the entire source and it's just wasted cycles when using Hlms.

However it is enabled by default on low level materials, because their source length tends to be very short and it is extremely useful/practical there

Parameters

bReplace

Reimplemented from Ogre::GpuProgram.

◆ unbind()

void Ogre::GLSLShader::unbind ( )

Unbind the shader in OpenGL.

◆ unbindAll()

static void Ogre::GLSLShader::unbindAll ( )

static

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

OgreGLSLShader.h

Classes

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ GLSLShader()

◆ ~GLSLShader()

Member Function Documentation

◆ _getBindingDelegate()

◆ attachChildShader()

◆ attachToProgramObject()

◆ bind()

◆ bindParameters()

◆ bindPassIterationParameters()

◆ calculateSize()

◆ compile()

◆ createParameters()

◆ detachFromProgramObject()

◆ getAttachedShaderNames()

◆ getColumnMajorMatrices()

◆ getGLShaderHandle()

◆ getGLShaderType()

◆ getInputOperationType()

◆ getLanguage()

◆ getMaxOutputVertices()

◆ getOutputOperationType()

◆ getPassFogStates()

◆ getPassSurfaceAndLightStates()

◆ getPassTransformStates()

◆ getPreprocessorDefines()

◆ getShaderID()

◆ getShaderTypeLabel()

◆ isLinked()

◆ setColumnMajorMatrices()

◆ setInputOperationType()

◆ setLinked()

◆ setMaxOutputVertices()

◆ setOutputOperationType()

◆ setPreprocessorDefines()

◆ setReplaceVersionMacro()

◆ unbind()

◆ unbindAll()