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# Ogre::Entity::EntityShadowRenderable Class Reference

Nested class to allow entity shadows. More...

`#include <OgreEntity.h>`

Inheritance diagram for Ogre::Entity::EntityShadowRenderable:

[legend]
List of all members.

## Public Methods

| EntityShadowRenderable (Entity *parent, HardwareIndexBufferSharedPtr *indexBuffer, const VertexData *vertexData, bool createSeparateLightCap, SubEntity *subent, bool isLightCap=false)
| ~EntityShadowRenderable ()
void | getWorldTransforms (Matrix4 *xform) const
| Overridden from ShadowRenderable.
const Quaternion & | getWorldOrientation (void) const
| Overridden from ShadowRenderable.
const Vector3 & | getWorldPosition (void) const
| Overridden from ShadowRenderable.
HardwareVertexBufferSharedPtr | getPositionBuffer (void)
HardwareVertexBufferSharedPtr | getWBuffer (void)
void | rebindPositionBuffer (void)
| Rebind the source positions (for temp buffer users).
bool | isVisible (void) const
| Overridden from ShadowRenderable.
void | setMaterial (Material *mat)
| Set the material to be used by the shadow, should be set by the caller before adding to a render queue.
Material * | getMaterial (void) const
| Overridden from Renderable.
void | getRenderOperation (RenderOperation &op)
| Overridden from Renderable.
RenderOperation * | getRenderOperationForUpdate (void)
| Get the internal render operation for set up.
Real | getSquaredViewDepth (const Camera *cam) const
| Overridden from Renderable.
const LightList & | getLights (void) const
| Overridden from Renderable.
bool | isLightCapSeparate (void) const
| Does this renderable require a separate light cap?
ShadowRenderable * | getLightCapRenderable (void)
| Get the light cap version of this renderable.
virtual Technique * | getTechnique (void) const
| Retrieves a pointer to the Material Technique this renderable object uses.
virtual unsigned short | getNumWorldTransforms (void) const
| Returns the number of world transform matrices this renderable requires.
virtual bool | useIdentityProjection (void) const
| Returns whether or not to use an 'identity' projection.
virtual bool | useIdentityView (void) const
| Returns whether or not to use an 'identity' projection.
virtual SceneDetailLevel | getRenderDetail () const
| Returns the preferred rasterisation mode of this renderable.
virtual bool | getNormaliseNormals (void) const
| Returns whether or not this Renderable wishes the hardware to normalise normals.
virtual const PlaneList & | getClipPlanes () const
virtual bool | getCastsShadows (void) const
| Method which reports whether this renderable would normally cast a shadow.
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.
const Vector4 & | getCustomParameter (size_t index) const
| Gets the custom value associated with this Renderable at the given index.
virtual void | _updateCustomGpuParameter (const GpuProgramParameters::AutoConstantEntry &constantEntry, GpuProgramParameters *params) const
| Update a custom GpuProgramParameters constant which is derived from information only this Renderable knows.

## Protected Types

typedef std::map< size_t, Vector4 > | CustomParameterMap

## Protected Attributes

Entity * | mParent
HardwareVertexBufferSharedPtr | mPositionBuffer
HardwareVertexBufferSharedPtr | mWBuffer
const VertexData * | mOriginalVertexData
unsigned short | mOriginalPosBufferBinding
SubEntity * | mSubEntity
| Link to SubEntity, only present if SubEntity has it's own geometry.
Material * | mMaterial
RenderOperation | mRenderOp
ShadowRenderable * | mLightCap
CustomParameterMap | mCustomParameters

## Static Protected Attributes

const PlaneList | msDummyPlaneList

## Detailed Description

Nested class to allow entity shadows.

Definition at line 226 of file OgreEntity.h.

## Member Typedef Documentation

typedef std::map<size_t, Vector4> Ogre::Renderable::CustomParameterMap`[protected, inherited]`

| Definition at line 232 of file OgreRenderable.h.

## Constructor & Destructor Documentation

Ogre::Entity::EntityShadowRenderable::EntityShadowRenderable | ( | Entity * | parent,
|  | HardwareIndexBufferSharedPtr * | indexBuffer,
|  | const VertexData * | vertexData,
|  | bool | createSeparateLightCap,
|  | SubEntity * | subent,
|  | bool | isLightCap = false
| ) |

Definition at line 1149 of file OgreEntity.cpp.

References Ogre::VertexDeclaration::addElement(), Ogre::VertexDeclaration::findElementBySemantic(), Ogre::VertexBufferBinding::getBuffer(), Ogre::VertexElement::getSource(), Ogre::VertexData::hardwareShadowVolWBuffer, Ogre::IndexData::indexBuffer, Ogre::RenderOperation::indexData, Ogre::IndexData::indexStart, Ogre::SharedPtr< HardwareVertexBuffer >::isNull(), Ogre::ShadowRenderable::mLightCap, mOriginalPosBufferBinding, mOriginalVertexData, mPositionBuffer, Ogre::ShadowRenderable::mRenderOp, mWBuffer, Ogre::VertexBufferBinding::setBinding(), Ogre::VertexData::vertexBufferBinding, Ogre::VertexData::vertexCount, Ogre::RenderOperation::vertexData, Ogre::VertexData::vertexDeclaration, Ogre::VertexData::vertexStart, Ogre::VES_POSITION, Ogre::VES_TEXTURE_COORDINATES, Ogre::VET_FLOAT1, and Ogre::VET_FLOAT3.

Ogre::Entity::EntityShadowRenderable::~EntityShadowRenderable | ( |  | ) |

| Definition at line 1206 of file OgreEntity.cpp. References Ogre::RenderOperation::indexData, Ogre::ShadowRenderable::mRenderOp, and Ogre::RenderOperation::vertexData.

## Member Function Documentation

virtual void Ogre::Renderable::_updateCustomGpuParameter | ( | const GpuProgramParameters::AutoConstantEntry & | constantEntry,
|  | GpuProgramParameters * | params
| ) | const`[virtual, inherited]`

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::TerrainRenderable.

Definition at line 218 of file OgreRenderable.h.

References Ogre::GpuProgramParameters::AutoConstantEntry::data, Ogre::GpuProgramParameters::AutoConstantEntry::index, params, and Ogre::GpuProgramParameters::setConstant().

Referenced by Ogre::GpuProgramParameters::_updateAutoParamsNoLights().

virtual bool Ogre::Renderable::getCastsShadows | ( | void |  | ) | const`[virtual, inherited]`

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.

Definition at line 153 of file OgreRenderable.h.

Referenced by Ogre::SceneManager::validateRenderableForRendering().

virtual const PlaneList& Ogre::Renderable::getClipPlanes | ( |  | ) | const`[virtual, inherited]`

| Definition at line 145 of file OgreRenderable.h. References Ogre::PlaneList. Referenced by Ogre::SceneManager::renderSingleObject().

const Vector4& Ogre::Renderable::getCustomParameter | ( | size_t | index | ) | const`[inherited]`

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

Parameters:

  see | setCustomParaemter for full details.

Definition at line 179 of file OgreRenderable.h.

References Except.

ShadowRenderable* Ogre::ShadowRenderable::getLightCapRenderable | ( | void |  | ) | `[inherited]`

| Get the light cap version of this renderable. Definition at line 90 of file OgreShadowCaster.h. Referenced by Ogre::ShadowCaster::generateShadowVolume(), and Ogre::SceneManager::renderShadowVolumesToStencil().

const LightList& Ogre::ShadowRenderable::getLights | ( | void |  | ) | const`[virtual, inherited]`

| Overridden from Renderable. Implements Ogre::Renderable. Definition at line 71 of file OgreShadowCaster.h. References Ogre::LightList.

Material* Ogre::ShadowRenderable::getMaterial | ( | void |  | ) | const`[virtual, inherited]`

| Overridden from Renderable. Implements Ogre::Renderable. Definition at line 57 of file OgreShadowCaster.h.

virtual bool Ogre::Renderable::getNormaliseNormals | ( | void |  | ) | const`[virtual, inherited]`

| Returns whether or not this Renderable wishes the hardware to normalise normals. Reimplemented in Ogre::SubEntity. Definition at line 137 of file OgreRenderable.h. Referenced by Ogre::SceneManager::renderSingleObject().

virtual unsigned short Ogre::Renderable::getNumWorldTransforms | ( | void |  | ) | const`[virtual, inherited]`

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::SubEntity, and Ogre::BorderRenderable.

Definition at line 103 of file OgreRenderable.h.

Referenced by Ogre::AutoParamDataSource::getWorldMatrix(), Ogre::AutoParamDataSource::getWorldMatrixArray(), Ogre::AutoParamDataSource::getWorldMatrixCount(), and Ogre::SceneManager::renderSingleObject().

HardwareVertexBufferSharedPtr Ogre::Entity::EntityShadowRenderable::getPositionBuffer | ( | void |  | ) |

| Definition at line 253 of file OgreEntity.h. Referenced by Ogre::Entity::getShadowVolumeRenderableIterator().

virtual SceneDetailLevel Ogre::Renderable::getRenderDetail | ( |  | ) | const`[virtual, inherited]`

| Returns the preferred rasterisation mode of this renderable. Reimplemented in Ogre::SubEntity. Definition at line 134 of file OgreRenderable.h. References Ogre::SceneDetailLevel, and Ogre::SDL_SOLID. Referenced by Ogre::SceneManager::renderSingleObject().

void Ogre::ShadowRenderable::getRenderOperation | ( | RenderOperation & | op | ) | `[virtual, inherited]`

| Overridden from Renderable. Implements Ogre::Renderable. Definition at line 59 of file OgreShadowCaster.h.

RenderOperation* Ogre::ShadowRenderable::getRenderOperationForUpdate | ( | void |  | ) | `[inherited]`

| Get the internal render operation for set up. Definition at line 61 of file OgreShadowCaster.h. Referenced by Ogre::ShadowCaster::generateShadowVolume().

Real Ogre::ShadowRenderable::getSquaredViewDepth | ( | const Camera * | cam | ) | const`[virtual, inherited]`

| Overridden from Renderable. Implements Ogre::Renderable. Definition at line 69 of file OgreShadowCaster.h. References Ogre::Real.

virtual Technique* Ogre::Renderable::getTechnique | ( | void |  | ) | const`[virtual, inherited]`

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::SubEntity.

Definition at line 68 of file OgreRenderable.h.

Referenced by Ogre::RenderPriorityGroup::addRenderable().

HardwareVertexBufferSharedPtr Ogre::Entity::EntityShadowRenderable::getWBuffer | ( | void |  | ) |

| Definition at line 254 of file OgreEntity.h.

const Quaternion & Ogre::Entity::EntityShadowRenderable::getWorldOrientation | ( | void |  | ) | const`[virtual]`

| Overridden from ShadowRenderable. Implements Ogre::ShadowRenderable. Definition at line 1227 of file OgreEntity.cpp. References Ogre::Node::_getDerivedOrientation(), Ogre::MovableObject::getParentNode(), and mParent.

const Vector3 & Ogre::Entity::EntityShadowRenderable::getWorldPosition | ( | void |  | ) | const`[virtual]`

| Overridden from ShadowRenderable. Implements Ogre::ShadowRenderable. Definition at line 1232 of file OgreEntity.cpp. References Ogre::Node::_getDerivedPosition(), Ogre::MovableObject::getParentNode(), and mParent.

void Ogre::Entity::EntityShadowRenderable::getWorldTransforms | ( | Matrix4 * | xform | ) | const`[virtual]`

| Overridden from ShadowRenderable. Implements Ogre::ShadowRenderable. Definition at line 1212 of file OgreEntity.cpp. References Ogre::Entity::_getNumBoneMatrices(), Ogre::MovableObject::_getParentNodeFullTransform(), and mParent.

bool Ogre::ShadowRenderable::isLightCapSeparate | ( | void |  | ) | const`[inherited]`

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.

Definition at line 87 of file OgreShadowCaster.h.

Referenced by Ogre::SceneManager::renderShadowVolumesToStencil().

bool Ogre::Entity::EntityShadowRenderable::isVisible | ( | void |  | ) | const`[virtual]`

| Overridden from ShadowRenderable. Reimplemented from Ogre::ShadowRenderable. Definition at line 1249 of file OgreEntity.cpp. References Ogre::SubEntity::isVisible(), and mSubEntity.

void Ogre::Entity::EntityShadowRenderable::rebindPositionBuffer | ( | void |  | ) |

| Rebind the source positions (for temp buffer users). Definition at line 1237 of file OgreEntity.cpp. References Ogre::VertexBufferBinding::getBuffer(), mOriginalPosBufferBinding, mOriginalVertexData, mPositionBuffer, Ogre::ShadowRenderable::mRenderOp, Ogre::VertexBufferBinding::setBinding(), Ogre::VertexData::vertexBufferBinding, and Ogre::RenderOperation::vertexData.

void Ogre::Renderable::setCustomParameter | ( | size_t | index,
|  | const Vector4 & | value
| ) | `[inherited]`

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.

Definition at line 170 of file OgreRenderable.h.

void Ogre::ShadowRenderable::setMaterial | ( | Material * | mat | ) | `[inherited]`

| Set the material to be used by the shadow, should be set by the caller before adding to a render queue. Definition at line 55 of file OgreShadowCaster.h.

virtual bool Ogre::Renderable::useIdentityProjection | ( | void |  | ) | const`[virtual, inherited]`

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 override this.

Reimplemented in Ogre::GuiElement, Ogre::Rectangle2D, and Ogre::BorderRenderable.

Definition at line 113 of file OgreRenderable.h.

Referenced by Ogre::SceneManager::useRenderableViewProjMode().

virtual bool Ogre::Renderable::useIdentityView | ( | void |  | ) | const`[virtual, inherited]`

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

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 override this.

Reimplemented in Ogre::GuiElement, Ogre::Rectangle2D, and Ogre::BorderRenderable.

Definition at line 123 of file OgreRenderable.h.

Referenced by Ogre::SceneManager::useRenderableViewProjMode().

## Member Data Documentation

CustomParameterMap Ogre::Renderable::mCustomParameters`[protected, inherited]`

| Definition at line 233 of file OgreRenderable.h.

ShadowRenderable* Ogre::ShadowRenderable::mLightCap`[protected, inherited]`

| Definition at line 48 of file OgreShadowCaster.h. Referenced by EntityShadowRenderable().

Material* Ogre::ShadowRenderable::mMaterial`[protected, inherited]`

| Definition at line 46 of file OgreShadowCaster.h.

unsigned short Ogre::Entity::EntityShadowRenderable::mOriginalPosBufferBinding`[protected]`

| Definition at line 237 of file OgreEntity.h. Referenced by EntityShadowRenderable(), and rebindPositionBuffer().

const VertexData* Ogre::Entity::EntityShadowRenderable::mOriginalVertexData`[protected]`

| Definition at line 235 of file OgreEntity.h. Referenced by EntityShadowRenderable(), and rebindPositionBuffer().

Entity* Ogre::Entity::EntityShadowRenderable::mParent`[protected]`

| Definition at line 229 of file OgreEntity.h. Referenced by getWorldOrientation(), getWorldPosition(), and getWorldTransforms().

HardwareVertexBufferSharedPtr Ogre::Entity::EntityShadowRenderable::mPositionBuffer`[protected]`

| Definition at line 231 of file OgreEntity.h. Referenced by EntityShadowRenderable(), and rebindPositionBuffer().

RenderOperation Ogre::ShadowRenderable::mRenderOp`[protected, inherited]`

| Definition at line 47 of file OgreShadowCaster.h. Referenced by EntityShadowRenderable(), rebindPositionBuffer(), and ~EntityShadowRenderable().

const PlaneList Ogre::Renderable::msDummyPlaneList`[static, protected, inherited]`

| Definition at line 45 of file OgreRenderSystem.cpp.

SubEntity* Ogre::Entity::EntityShadowRenderable::mSubEntity`[protected]`

| Link to SubEntity, only present if SubEntity has it's own geometry. Definition at line 239 of file OgreEntity.h. Referenced by isVisible().

HardwareVertexBufferSharedPtr Ogre::Entity::EntityShadowRenderable::mWBuffer`[protected]`

| Definition at line 233 of file OgreEntity.h. Referenced by EntityShadowRenderable().

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

- OgreEntity.h
- OgreEntity.cpp

Copyright © 2002-2003 by The OGRE Team
Last modified Sun Nov 28 19:50:54 2004