Ogre::ShadowRenderable Class Reference

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

#include <OgreShadowCaster.h>

Inheritance diagram for Ogre::ShadowRenderable:

Public Member Functions
	ShadowRenderable ()
	ShadowRenderable (MovableObject *parent, const HardwareIndexBufferSharedPtr &indexBuffer, const VertexData *vertexData, bool createSeparateLightCap, bool isLightCap=false)
virtual	~ShadowRenderable ()
ShadowRenderable *	getLightCapRenderable (void)
	Get the light cap version of this renderable.
const LightList &	getLights (void) const override
	Gets a list of lights, ordered relative to how close they are to this renderable.
const MaterialPtr &	getMaterial (void) const override
	Retrieves a weak reference to the material this renderable object uses.
const HardwareVertexBufferSharedPtr &	getPositionBuffer (void) const
void	getRenderOperation (RenderOperation &op) override
	Gets the render operation required to send this object to the frame buffer.
RenderOperation *	getRenderOperationForUpdate (void)
	Get the internal render operation for set up.
Real	getSquaredViewDepth (const Camera *) const override
	Returns the squared distance between the camera and this renderable.
void	getWorldTransforms (Matrix4 *xform) const override
	Gets the world transform matrix / matrices for this renderable object.
bool	isLightCapSeparate (void) const
	Does this renderable require a separate light cap?
virtual bool	isVisible (void) const
	Should this ShadowRenderable be treated as visible?
void	rebindIndexBuffer (const HardwareIndexBufferSharedPtr &indexBuffer)
	This function informs the shadow renderable that the global index buffer from the SceneManager has been updated.
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.
Public Member Functions inherited from Ogre::Renderable
	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 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 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.
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)

Additional Inherited Members
Public Types inherited from Ogre::Renderable
enum	{ DEFAULT_PRIORITY = 100 }

Detailed Description

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

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)

Constructor & Destructor Documentation

ShadowRenderable() [1/2]

Ogre::ShadowRenderable::ShadowRenderable ( )

inline

ShadowRenderable() [2/2]

Ogre::ShadowRenderable::ShadowRenderable	(	MovableObject *	parent,
		const HardwareIndexBufferSharedPtr &	indexBuffer,
		const VertexData *	vertexData,
		bool	createSeparateLightCap,
		bool	isLightCap = false
	)

~ShadowRenderable()

virtual Ogre::ShadowRenderable::~ShadowRenderable ( )

virtual

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

inlineoverridevirtual

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.

Implements Ogre::Renderable.

getRenderOperation()

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

inlineoverridevirtual

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

overridevirtual

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.

Implements Ogre::Renderable.

getSquaredViewDepth()

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

inlineoverridevirtual

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.

Implements Ogre::Renderable.

getLights()

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

overridevirtual

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.

Implements Ogre::Renderable.

isLightCapSeparate()

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

inline

Does this renderable require a separate light cap?

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()

void Ogre::ShadowRenderable::rebindIndexBuffer

(

const HardwareIndexBufferSharedPtr &

indexBuffer

)

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.

getPositionBuffer()

const HardwareVertexBufferSharedPtr & Ogre::ShadowRenderable::getPositionBuffer ( void  ) const

inline

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

• OgreShadowCaster.h