Abstract class defining the interface all renderable objects must implement. More...

#include <OgreRenderable.h>

Inheritance diagram for Ogre::Renderable:

Classes
class	Visitor
	Visitor object that can be used to iterate over a collection of Renderable instances abstractly. More...

Public Types
enum	{ DEFAULT_PRIORITY = 100 }

Public Member Functions
	Renderable ()

virtual	~Renderable ()
	Virtual destructor needed as class has virtual methods.

uint16	_getMaterialLodIndex () const

virtual void	_updateCustomGpuParameter (const GpuProgramParameters::AutoConstantEntry &constantEntry, GpuProgramParameters *params) const
	Update a custom GpuProgramParameters constant which is derived from information only this Renderable knows.

virtual bool	getCastsShadows (void) const
	Method which reports whether this renderable would normally cast a shadow.

const Vector4f &	getCustomParameter (size_t index) const
	Gets the custom value associated with this Renderable at the given index.

virtual const LightList &	getLights (void) const =0
	Gets a list of lights, ordered relative to how close they are to this renderable.

virtual const MaterialPtr &	getMaterial (void) const =0
	Retrieves a weak reference to the material this renderable object uses.

virtual uint16	getNumWorldTransforms (void) const
	Returns the number of world transform matrices this renderable requires.

bool	getPolygonModeOverrideable (void) const
	Gets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

virtual void	getRenderOperation (RenderOperation &op)=0
	Gets the render operation required to send this object to the frame buffer.

virtual Real	getSquaredViewDepth (const Camera *cam) const =0
	Returns the squared distance between the camera and this renderable.

virtual Technique *	getTechnique (void) const
	Retrieves a pointer to the Material Technique this renderable object uses.

bool	getUseIdentityProjection (void) const
	Returns whether or not to use an 'identity' projection.

bool	getUseIdentityView (void) const
	Returns whether or not to use an 'identity' view.

const Any &	getUserAny (void) const

UserObjectBindings &	getUserObjectBindings ()
	Class that provides convenient interface to establish a linkage between custom user application objects and Ogre core classes.

const UserObjectBindings &	getUserObjectBindings () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

virtual void	getWorldTransforms (Matrix4 *xform) const =0
	Gets the world transform matrix / matrices for this renderable object.

bool	hasCustomParameter (size_t index) const
	Checks whether a custom value is associated with this Renderable at the given index.

virtual void	postRender (SceneManager sm, RenderSystem rsys)
	Called immediately after the Renderable has been rendered.

virtual bool	preRender (SceneManager sm, RenderSystem rsys)
	Called just prior to the Renderable being rendered.

void	removeCustomParameter (size_t index)
	Removes a custom value which is associated with this Renderable at the given index.

void	setCustomParameter (size_t index, const Vector4f &value)
	Sets a custom parameter for this Renderable, which may be used to drive calculations for this specific Renderable, like GPU program parameters.

void	setPolygonModeOverrideable (bool override)
	Sets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

void	setUseIdentityProjection (bool useIdentityProjection)
	Sets whether or not to use an 'identity' projection.

void	setUseIdentityView (bool useIdentityView)
	Sets whether or not to use an 'identity' view.

void	setUserAny (const Any &anything)

Detailed Description

Abstract class defining the interface all renderable objects must implement.

This interface abstracts renderable discrete objects which will be queued in the render pipeline, grouped by material. Classes implementing this interface must be based on a single material, a single world matrix (or a collection of world matrices which are blended by weights), and must be renderable via a single render operation.

: Note that deciding whether to put these objects in the rendering pipeline is done from the more specific classes e.g. entities. Only once it is decided that the specific class is to be rendered is the abstract version created (could be more than one per visible object) and pushed onto the rendering queue.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
DEFAULT_PRIORITY

Constructor & Destructor Documentation

◆ Renderable()

Ogre::Renderable::Renderable ( )

inline

◆ ~Renderable()

virtual Ogre::Renderable::~Renderable ( )

inlinevirtual

Virtual destructor needed as class has virtual methods.

Member Function Documentation

◆ getMaterial()

virtual const MaterialPtr & Ogre::Renderable::getMaterial ( void ) const

pure virtual

Retrieves a weak reference to the material this renderable object uses.

Note that the Renderable also has the option to override the getTechnique method to specify a particular Technique to use instead of the best one available.

Implemented in Ogre::BorderRenderable, Ogre::OverlayElement, Ogre::TextAreaOverlayElement, Ogre::BillboardChain, Ogre::BillboardSet, Ogre::InstanceBatch, Ogre::ManualObject::ManualObjectSection, Ogre::ShadowRenderable, Ogre::SimpleRenderable, Ogre::StaticGeometry::GeometryBucket, Ogre::SubEntity, and Ogre::BspLevel.

◆ getTechnique()

virtual Technique * Ogre::Renderable::getTechnique ( void ) const

inlinevirtual

Retrieves a pointer to the Material Technique this renderable object uses.

This is to allow Renderables to use a chosen Technique if they wish, otherwise they will use the best Technique available for the Material they are using.

Reimplemented in Ogre::StaticGeometry::GeometryBucket.

◆ getRenderOperation()

virtual void Ogre::Renderable::getRenderOperation ( RenderOperation & op )

pure virtual

Gets the render operation required to send this object to the frame buffer.

Implemented in Ogre::BillboardChain, Ogre::BorderRenderable, Ogre::PanelOverlayElement, Ogre::TextAreaOverlayElement, Ogre::BillboardSet, Ogre::InstanceBatch, Ogre::ManualObject::ManualObjectSection, Ogre::ShadowRenderable, Ogre::SimpleRenderable, Ogre::StaticGeometry::GeometryBucket, Ogre::SubEntity, and Ogre::BspLevel.

◆ _getMaterialLodIndex()

uint16 Ogre::Renderable::_getMaterialLodIndex ( ) const

inline

◆ preRender()

virtual bool Ogre::Renderable::preRender	(	SceneManager *	sm,
		RenderSystem *	rsys
	)

inlinevirtual

Called just prior to the Renderable being rendered.

OGRE is a queued renderer, so the actual render commands are executed at a later time than the point at which an object is discovered to be visible. This allows ordering & grouping of renders without the discovery process having to be aware of it. It also means OGRE uses declarative render information rather than immediate mode rendering - this is very useful in that certain effects and processes can automatically be applied to a wide range of scenes, but the downside is that special cases are more difficult to handle, because there is not the declared state to cope with it.

: This method allows a Renderable to do something special at the actual point of rendering if it wishes to. When this method is called, all the material render state as declared by this Renderable has already been set, all that is left to do is to bind the buffers and perform the render. The Renderable may modify render state itself if it wants to (and restore it in the postRender call) before the automated render happens, or by returning 'false' from this method can actually suppress the automatic render and perform one of its own.

Returns: true if the automatic render should proceed, false to skip it on the assumption that the Renderable has done it manually.

Reimplemented in Ogre::BillboardChain.

◆ postRender()

virtual void Ogre::Renderable::postRender	(	SceneManager *	sm,
		RenderSystem *	rsys
	)

inlinevirtual

Called immediately after the Renderable has been rendered.

◆ getWorldTransforms()

virtual void Ogre::Renderable::getWorldTransforms ( Matrix4 * xform ) const

pure virtual

Gets the world transform matrix / matrices for this renderable object.

If the object has any derived transforms, these are expected to be up to date as long as all the SceneNode structures have been updated before this is called.

Note: Internal Ogre never supports non-affine matrix for world transform matrix/matrices, the behavior is undefined if returns non-affine matrix here.

This method will populate transform with 1 matrix if it does not use GPU vertex blending. If it does use GPU vertex blending it will fill the passed in pointer with an array of matrices, the length being the value returned from getNumWorldTransforms.

Note: If MeshManager::getBonesUseObjectSpace() is true, the first matrix must contain the world transform of the object, and the rest of the matrices must contain the bone transforms in object space.

Implemented in Ogre::BillboardChain, Ogre::BorderRenderable, Ogre::OverlayElement, Ogre::BillboardSet, Ogre::InstanceBatchHW, Ogre::InstanceBatchShader, Ogre::BaseInstanceBatchVTF, Ogre::ManualObject::ManualObjectSection, Ogre::ShadowRenderable, Ogre::SimpleRenderable, Ogre::StaticGeometry::GeometryBucket, Ogre::SubEntity, and Ogre::BspLevel.

◆ getNumWorldTransforms()

virtual uint16 Ogre::Renderable::getNumWorldTransforms ( void ) const

inlinevirtual

Returns the number of world transform matrices this renderable requires.

When a renderable uses GPU vertex blending, it uses multiple world matrices instead of a single one. Each vertex sent to the pipeline can reference one or more matrices in this list with given weights. If a renderable does not use vertex blending this method returns 1, which is the default for simplicity.

Note: If MeshManager::getBonesUseObjectSpace() is true, this method must return numBones + 1

Reimplemented in Ogre::BorderRenderable, Ogre::InstanceBatchShader, and Ogre::SubEntity.

◆ setUseIdentityProjection()

void Ogre::Renderable::setUseIdentityProjection ( bool useIdentityProjection )

inline

Sets whether or not to use an 'identity' projection.

Usually Renderable objects will use a projection matrix as determined by the active camera. However, if they want they can cancel this out and use an identity projection, which effectively projects in 2D using a {-1, 1} view space. Useful for overlay rendering. Normal renderables need not change this. The default is false.

See also: Renderable::getUseIdentityProjection

◆ getUseIdentityProjection()

bool Ogre::Renderable::getUseIdentityProjection ( void ) const

inline

Returns whether or not to use an 'identity' projection.

Usually Renderable objects will use a projection matrix as determined by the active camera. However, if they want they can cancel this out and use an identity projection, which effectively projects in 2D using a {-1, 1} view space. Useful for overlay rendering. Normal renderables need not change this.

See also: Renderable::setUseIdentityProjection

◆ setUseIdentityView()

void Ogre::Renderable::setUseIdentityView ( bool useIdentityView )

inline

Sets whether or not to use an 'identity' view.

Usually Renderable objects will use a view matrix as determined by the active camera. However, if they want they can cancel this out and use an identity matrix, which means all geometry is assumed to be relative to camera space already. Useful for overlay rendering. Normal renderables need not change this. The default is false.

See also: Renderable::getUseIdentityView

◆ getUseIdentityView()

bool Ogre::Renderable::getUseIdentityView ( void ) const

inline

Returns whether or not to use an 'identity' view.

Usually Renderable objects will use a view matrix as determined by the active camera. However, if they want they can cancel this out and use an identity matrix, which means all geometry is assumed to be relative to camera space already. Useful for overlay rendering. Normal renderables need not change this.

See also: Renderable::setUseIdentityView

◆ getSquaredViewDepth()

virtual Real Ogre::Renderable::getSquaredViewDepth ( const Camera * cam ) const

pure virtual

Returns the squared distance between the camera and this renderable.

Used to sort transparent objects. Squared distance is used to avoid having to perform a square root on the result.

Implemented in Ogre::ShadowRenderable, Ogre::BorderRenderable, Ogre::OverlayElement, Ogre::BillboardChain, Ogre::BillboardSet, Ogre::InstanceBatch, Ogre::Rectangle2D, Ogre::StaticGeometry::GeometryBucket, Ogre::SubEntity, Ogre::WireBoundingBox, Ogre::BspLevel, Ogre::Volume::Chunk, and Ogre::ManualObject::ManualObjectSection.

◆ getLights()

virtual const LightList & Ogre::Renderable::getLights ( void ) const

pure virtual

Gets a list of lights, ordered relative to how close they are to this renderable.

Directional lights, which have no position, will always be first on this list.

Implemented in Ogre::BspLevel, Ogre::BorderRenderable, Ogre::OverlayElement, Ogre::BillboardChain, Ogre::BillboardSet, Ogre::InstanceBatch, Ogre::ManualObject::ManualObjectSection, Ogre::ShadowRenderable, Ogre::SimpleRenderable, Ogre::StaticGeometry::GeometryBucket, and Ogre::SubEntity.

◆ getCastsShadows()

virtual bool Ogre::Renderable::getCastsShadows ( void ) const

inlinevirtual

Method which reports whether this renderable would normally cast a shadow.

Subclasses should override this if they could have been used to generate a shadow.

Reimplemented in Ogre::StaticGeometry::GeometryBucket, and Ogre::SubEntity.

◆ setCustomParameter()

void Ogre::Renderable::setCustomParameter	(	size_t	index,
		const Vector4f &	value
	)

Sets a custom parameter for this Renderable, which may be used to drive calculations for this specific Renderable, like GPU program parameters.

Calling this method simply associates a numeric index with a 4-dimensional value for this specific Renderable. This is most useful if the material which this Renderable uses a vertex or fragment program, and has an ACT_CUSTOM parameter entry. This parameter entry can refer to the index you specify as part of this call, thereby mapping a custom parameter for this renderable to a program parameter.

Parameters

index	The index with which to associate the value. Note that this does not have to start at 0, and can include gaps. It also has no direct correlation with a GPU program parameter index - the mapping between the two is performed by the ACT_CUSTOM entry, if that is used.
value	The value to associate.

◆ removeCustomParameter()

void Ogre::Renderable::removeCustomParameter ( size_t index )

Removes a custom value which is associated with this Renderable at the given index.

Parameters

index Index of the parameter to remove.

See also: setCustomParameter for full details.

◆ hasCustomParameter()

bool Ogre::Renderable::hasCustomParameter ( size_t index ) const

Checks whether a custom value is associated with this Renderable at the given index.

Parameters

index Index of the parameter to check for existence.

See also: setCustomParameter for full details.

◆ getCustomParameter()

const Vector4f & Ogre::Renderable::getCustomParameter ( size_t index ) const

Gets the custom value associated with this Renderable at the given index.

Parameters

index Index of the parameter to retrieve.

See also: setCustomParameter for full details.

◆ _updateCustomGpuParameter()

virtual void Ogre::Renderable::_updateCustomGpuParameter	(	const GpuProgramParameters::AutoConstantEntry &	constantEntry,
		GpuProgramParameters *	params
	)		const

virtual

Update a custom GpuProgramParameters constant which is derived from information only this Renderable knows.

This method allows a Renderable to map in a custom GPU program parameter based on it's own data. This is represented by a GPU auto parameter of ACT_CUSTOM, and to allow there to be more than one of these per Renderable, the 'data' field on the auto parameter will identify which parameter is being updated. The implementation of this method must identify the parameter being updated, and call a 'setConstant' method on the passed in GpuProgramParameters object, using the details provided in the incoming auto constant setting to identify the index at which to set the parameter.

: You do not need to override this method if you're using the standard sets of data associated with the Renderable as provided by setCustomParameter and getCustomParameter. By default, the implementation will map from the value indexed by the 'constantEntry.data' parameter to a value previously set by setCustomParameter. But custom Renderables are free to override this if they want, in any case.

Parameters

constantEntry	The auto constant entry referring to the parameter being updated
params	The parameters object which this method should call to set the updated parameters.

Reimplemented in Ogre::SubEntity.

◆ setPolygonModeOverrideable()

void Ogre::Renderable::setPolygonModeOverrideable ( bool override )

inline

Sets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

Parameters

override true means that a lower camera detail will override this renderables detail level, false means it won't.

◆ getPolygonModeOverrideable()

bool Ogre::Renderable::getPolygonModeOverrideable ( void ) const

inline

Gets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

Referenced by Ogre::BorderRenderable::BorderRenderable().

◆ setUserAny()

void Ogre::Renderable::setUserAny ( const Any & anything )

inline

Deprecated:: use UserObjectBindings::setUserAny via getUserObjectBindings() instead.

◆ getUserAny()

const Any & Ogre::Renderable::getUserAny ( void ) const

inline

Deprecated:: use UserObjectBindings::getUserAny via getUserObjectBindings() instead.

◆ getUserObjectBindings() [1/2]

UserObjectBindings & Ogre::Renderable::getUserObjectBindings ( )

inline

Class that provides convenient interface to establish a linkage between custom user application objects and Ogre core classes.

◆ getUserObjectBindings() [2/2]

const UserObjectBindings & Ogre::Renderable::getUserObjectBindings ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

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

OgreRenderable.h

Classes

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ anonymous enum

Constructor & Destructor Documentation

◆ Renderable()

◆ ~Renderable()

Member Function Documentation

◆ getMaterial()

◆ getTechnique()

◆ getRenderOperation()

◆ _getMaterialLodIndex()

◆ preRender()

◆ postRender()

◆ getWorldTransforms()

◆ getNumWorldTransforms()

◆ setUseIdentityProjection()

◆ getUseIdentityProjection()

◆ setUseIdentityView()

◆ getUseIdentityView()

◆ getSquaredViewDepth()

◆ getLights()

◆ getCastsShadows()

◆ setCustomParameter()

◆ removeCustomParameter()

◆ hasCustomParameter()

◆ getCustomParameter()

◆ _updateCustomGpuParameter()

◆ setPolygonModeOverrideable()

◆ getPolygonModeOverrideable()

◆ setUserAny()

◆ getUserAny()

◆ getUserObjectBindings() [1/2]

◆ getUserObjectBindings() [2/2]