Class which represents the renderable aspects of a set of shadow volume faces. More...

#include <OgreShadowCaster.h>

Inheritance diagram for Ogre::ShadowRenderable:

Public Types
typedef SharedPtr< RenderSystemData >	RenderSystemDataPtr

Public Member Functions
	ShadowRenderable ()
	Used only if isLightCapSeparate == true. More...

virtual	~ShadowRenderable ()

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

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

const Vector4 &	getCustomParameter (size_t index) const
	Gets the custom value associated with this Renderable at the given index. More...

ShadowRenderable *	getLightCapRenderable (void)
	Get the light cap version of this renderable. More...

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

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

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

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

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

RenderOperation *	getRenderOperationForUpdate (void)
	Get the internal render operation for set up. More...

const RenderSystemDataPtr &	getRenderSystemData () const
	Gets RenderSystem private data. More...

Real	getSquaredViewDepth (const Camera *) const
	Returns the camera-relative squared depth of this renderable. More...

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

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

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

const Any &	getUserAny (void) const

UserObjectBindings &	getUserObjectBindings ()
	Return an instance of user objects binding associated with this class. More...

const UserObjectBindings &	getUserObjectBindings () const
	Return an instance of user objects binding associated with this class. More...

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

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

bool	isLightCapSeparate (void) const
	Does this renderable require a separate light cap? More...

virtual bool	isVisible (void) const
	Should this ShadowRenderable be treated as visible? More...

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

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

virtual void	rebindIndexBuffer (const HardwareIndexBufferSharedPtr &indexBuffer)=0
	This function informs the shadow renderable that the global index buffer from the SceneManager has been updated. More...

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

void	setCustomParameter (size_t index, const Vector4 &value)
	Sets a custom parameter for this Renderable, which may be used to drive calculations for this specific Renderable, like GPU program parameters. More...

void	setMaterial (const MaterialPtr &mat)
	Set the material to be used by the shadow, should be set by the caller before adding to a render queue. More...

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

void	setRenderSystemData (RenderSystemDataPtr val) const
	Sets RenderSystem private data. More...

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

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

void	setUserAny (const Any &anything)

Detailed Description

Class which represents the renderable aspects of a set of shadow volume faces.

Remarks: Note that for casters comprised of more than one set of vertex buffers (e.g. SubMeshes each using their own geometry), it will take more than one ShadowRenderable to render the shadow volume. Therefore for shadow caster geometry, it is best to stick to one set of vertex buffers (not necessarily one buffer, but the positions for the entire geometry should come from one buffer if possible)

Member Typedef Documentation

◆ RenderSystemDataPtr

typedef SharedPtr<RenderSystemData> Ogre::Renderable::RenderSystemDataPtr

inherited

Constructor & Destructor Documentation

◆ ShadowRenderable()

Ogre::ShadowRenderable::ShadowRenderable ( )

inline

Used only if isLightCapSeparate == true.

◆ ~ShadowRenderable()

virtual Ogre::ShadowRenderable::~ShadowRenderable ( )

inlinevirtual

Member Function Documentation

◆ setMaterial()

void Ogre::ShadowRenderable::setMaterial ( const MaterialPtr & mat )

inline

Set the material to be used by the shadow, should be set by the caller before adding to a render queue.

◆ getMaterial()

const MaterialPtr& Ogre::ShadowRenderable::getMaterial ( void ) const

inlinevirtual

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

Remarks: 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.

Implements Ogre::Renderable.

◆ getRenderOperation()

void Ogre::ShadowRenderable::getRenderOperation ( RenderOperation & op )

inlinevirtual

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

Implements Ogre::Renderable.

◆ getRenderOperationForUpdate()

RenderOperation* Ogre::ShadowRenderable::getRenderOperationForUpdate ( void )

inline

Get the internal render operation for set up.

◆ getWorldTransforms()

void Ogre::ShadowRenderable::getWorldTransforms ( Matrix4 * xform ) const

pure virtual

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

Remarks: 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.

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

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

See also: Matrix4::isAffine.

Implements Ogre::Renderable.

Implemented in Ogre::ManualObject::ManualObjectSectionShadowRenderable.

◆ getSquaredViewDepth()

Real Ogre::ShadowRenderable::getSquaredViewDepth ( const Camera * ) const

inlinevirtual

Returns the camera-relative squared depth of this renderable.

Remarks: Used to sort transparent objects. Squared depth is used rather than actual depth to avoid having to perform a square root on the result.

Implements Ogre::Renderable.

◆ getLights()

const LightList& Ogre::ShadowRenderable::getLights ( void ) const

virtual

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

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

Implements Ogre::Renderable.

◆ isLightCapSeparate()

bool Ogre::ShadowRenderable::isLightCapSeparate ( void ) const

inline

Does this renderable require a separate light cap?

Remarks: If possible, the light cap (when required) should be contained in the usual geometry of the shadow renderable. However, if for some reason the normal depth function (less than) could cause artefacts, then a separate light cap with a depth function of 'always fail' can be used instead. The primary example of this is when there are floating point inaccuracies caused by calculating the shadow geometry separately from the real geometry.

◆ getLightCapRenderable()

ShadowRenderable* Ogre::ShadowRenderable::getLightCapRenderable ( void )

inline

Get the light cap version of this renderable.

◆ isVisible()

virtual bool Ogre::ShadowRenderable::isVisible ( void ) const

inlinevirtual

Should this ShadowRenderable be treated as visible?

◆ rebindIndexBuffer()

virtual void Ogre::ShadowRenderable::rebindIndexBuffer ( const HardwareIndexBufferSharedPtr & indexBuffer )

pure virtual

This function informs the shadow renderable that the global index buffer from the SceneManager has been updated.

As all shadow use this buffer their pointer must be updated as well.

Parameters

indexBuffer Pointer to the new index buffer.

Implemented in Ogre::ManualObject::ManualObjectSectionShadowRenderable.

◆ getTechnique()

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

inlinevirtualinherited

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

Remarks: 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::InstanceBatch, Ogre::InstancedGeometry::GeometryBucket, Ogre::StaticGeometry::GeometryBucket, and Ogre::SubEntity.

◆ preRender()

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

inlinevirtualinherited

Called just prior to the Renderable being rendered.

Remarks: 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
	)

inlinevirtualinherited

Called immediately after the Renderable has been rendered.

◆ getNumWorldTransforms()

virtual unsigned short Ogre::Renderable::getNumWorldTransforms ( void ) const

inlinevirtualinherited

Returns the number of world transform matrices this renderable requires.

Remarks: When a renderable uses 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.

Reimplemented in Ogre::BorderRenderable, Ogre::SubEntity, Ogre::InstancedGeometry::GeometryBucket, Ogre::BaseInstanceBatchVTF, Ogre::InstanceBatchHW, and Ogre::InstanceBatchShader.

◆ setUseIdentityProjection()

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

inlineinherited

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

Remarks: 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

inlineinherited

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

Remarks: 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 )

inlineinherited

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

Remarks: 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

inlineinherited

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

Remarks: 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

◆ getCastsShadows()

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

inlinevirtualinherited

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

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

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

◆ setCustomParameter()

void Ogre::Renderable::setCustomParameter	(	size_t	index,
		const Vector4 &	value
	)

inlineinherited

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

Remarks: 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 )

inlineinherited

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

inlineinherited

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 Vector4& Ogre::Renderable::getCustomParameter ( size_t index ) const

inlineinherited

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.

References Ogre::Exception::ERR_ITEM_NOT_FOUND, and OGRE_EXCEPT.

◆ _updateCustomGpuParameter()

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

inlinevirtualinherited

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

Remarks: 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.

References Ogre::GpuProgramParameters::_writeRawConstant(), Ogre::GpuProgramParameters::AutoConstantEntry::data, Ogre::GpuProgramParameters::AutoConstantEntry::elementCount, and Ogre::GpuProgramParameters::AutoConstantEntry::physicalIndex.

◆ setPolygonModeOverrideable()

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

inlineinherited

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

inlineinherited

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

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

◆ setUserAny()

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

inlineinherited

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

Sets any kind of user value on this object.

Remarks: This method allows you to associate any user value you like with this Renderable. This can be a pointer back to one of your own classes for instance.

Referenced by Ogre::InstanceBatch::getRenderOperation().

◆ getUserAny()

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

inlineinherited

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

Retrieves the custom user value associated with this object.

Referenced by Ogre::InstanceBatch::getRenderOperation().

◆ getUserObjectBindings() [1/2]

UserObjectBindings& Ogre::Renderable::getUserObjectBindings ( )

inlineinherited

Return an instance of user objects binding associated with this class.

You can use it to associate one or more custom objects with this class instance.

See also: UserObjectBindings::setUserAny.

◆ getUserObjectBindings() [2/2]

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

inlineinherited

Return an instance of user objects binding associated with this class.

You can use it to associate one or more custom objects with this class instance.

See also: UserObjectBindings::setUserAny.

◆ getRenderSystemData()

const RenderSystemDataPtr& Ogre::Renderable::getRenderSystemData ( ) const

inlineinherited

Gets RenderSystem private data.

Remarks: This should only be used by a RenderSystem

◆ setRenderSystemData()

void Ogre::Renderable::setRenderSystemData ( RenderSystemDataPtr val ) const

inlineinherited

Sets RenderSystem private data.

Remarks: This should only be used by a RenderSystem

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

OgreShadowCaster.h

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ RenderSystemDataPtr

Constructor & Destructor Documentation

◆ ShadowRenderable()

◆ ~ShadowRenderable()

Member Function Documentation

◆ setMaterial()

◆ getMaterial()

◆ getRenderOperation()

◆ getRenderOperationForUpdate()

◆ getWorldTransforms()

◆ getSquaredViewDepth()

◆ getLights()

◆ isLightCapSeparate()

◆ getLightCapRenderable()

◆ isVisible()

◆ rebindIndexBuffer()

◆ getTechnique()

◆ preRender()

◆ postRender()

◆ getNumWorldTransforms()

◆ setUseIdentityProjection()

◆ getUseIdentityProjection()

◆ setUseIdentityView()

◆ getUseIdentityView()

◆ getCastsShadows()

◆ setCustomParameter()

◆ removeCustomParameter()

◆ hasCustomParameter()

◆ getCustomParameter()

◆ _updateCustomGpuParameter()

◆ setPolygonModeOverrideable()

◆ getPolygonModeOverrideable()

◆ setUserAny()

◆ getUserAny()

◆ getUserObjectBindings() [1/2]

◆ getUserObjectBindings() [2/2]

◆ getRenderSystemData()

◆ setRenderSystemData()