OgreInstanceBatch.h
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4  (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
6 
7 Copyright (c) 2000-2013 Torus Knot Software Ltd
8 
9 Permission is hereby granted, free of charge, to any person obtaining a copy
10 of this software and associated documentation files (the "Software"), to deal
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16 The above copyright notice and this permission notice shall be included in
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18 
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26 -----------------------------------------------------------------------------
27 */
28 #ifndef __InstanceBatch_H__
29 #define __InstanceBatch_H__
30 
31 #include "OgrePrerequisites.h"
32 #include "OgreRenderOperation.h"
33 #include "OgreRenderable.h"
34 #include "OgreMovableObject.h"
35 #include "OgreMesh.h"
36 #include "OgreHeaderPrefix.h"
37 
38 namespace Ogre
39 {
89  {
90  public:
93  protected:
96 
98 
100 
103 
104  //InstancedEntities are all allocated at build time and kept as "unused"
105  //when they're requested, they're removed from there when requested,
106  //and put back again when they're no longer needed
107  //Note each InstancedEntity has a unique ID ranging from [0; mInstancesPerBatch)
110 
115 
120  bool mBoundsUpdated; //Set to false by derived classes that need it
122 
123  unsigned short mMaterialLodIndex;
124 
125  bool mDirtyAnimation; //Set to false at start of each _updateRenderQueue
126 
129 
133  mutable const Camera *mCachedCamera;
134 
137 
142 
143  virtual void setupVertices( const SubMesh* baseSubMesh ) = 0;
144  virtual void setupIndices( const SubMesh* baseSubMesh ) = 0;
145  virtual void createAllInstancedEntities(void);
146  virtual void deleteAllInstancedEntities(void);
147  virtual void deleteUnusedInstancedEntities(void);
150 
155  void makeMatrixCameraRelative3x4( float *mat3x4, size_t numFloats );
156 
158  virtual bool checkSubMeshCompatibility( const SubMesh* baseSubMesh );
159 
160  void updateVisibility(void);
161 
163  void defragmentBatchNoCull( InstancedEntityVec &usedEntities, CustomParamsVec &usedParams );
164 
170  void defragmentBatchDoCull( InstancedEntityVec &usedEntities, CustomParamsVec &usedParams );
171 
172  public:
173  InstanceBatch( InstanceManager *creator, MeshPtr &meshReference, const MaterialPtr &material,
174  size_t instancesPerBatch, const Mesh::IndexMap *indexToBoneMap,
175  const String &batchName );
176  virtual ~InstanceBatch();
177 
178  MeshPtr& _getMeshRef() { return mMeshReference; }
179 
182  void _setInstancesPerBatch( size_t instancesPerBatch );
183 
184  const Mesh::IndexMap* _getIndexToBoneMap() const { return mIndexToBoneMap; }
185 
192  bool _supportsSkeletalAnimation() const { return mTechnSupportsSkeletal; }
193 
195  void _updateBounds(void);
196 
207  virtual size_t calculateMaxNumInstances( const SubMesh *baseSubMesh, uint16 flags ) const = 0;
208 
222  virtual RenderOperation build( const SubMesh* baseSubMesh );
223 
236  virtual void buildFrom( const SubMesh *baseSubMesh, const RenderOperation &renderOperation );
237 
238  const Ogre::MeshPtr& _getMeshReference(void) const { return mMeshReference; }
239 
243  bool isBatchFull(void) const { return mUnusedEntities.empty(); }
244 
247  bool isBatchUnused(void) const { return mUnusedEntities.size() == mInstancedEntities.size(); }
248 
253 
267  void _defragmentBatch( bool optimizeCulling, InstancedEntityVec &usedEntities,
268  CustomParamsVec &usedParams );
269 
276 
280  virtual void _boundsDirty(void);
281 
295  virtual void setStaticAndUpdate( bool bStatic ) {}
296 
299  virtual bool isStatic() const { return false; }
300 
308 
315  void removeInstancedEntity( InstancedEntity *instancedEntity );
316 
320  virtual bool useBoneWorldMatrices() const { return true; }
321 
323  void _markTransformSharingDirty() { mTransformSharingDirty = true; }
324 
326  void _setCustomParam( InstancedEntity *instancedEntity, unsigned char idx, const Vector4 &newParam );
327 
329  const Vector4& _getCustomParam( InstancedEntity *instancedEntity, unsigned char idx );
330 
331  //Renderable overloads
333  const MaterialPtr& getMaterial(void) const { return mMaterial; }
335  void getRenderOperation( RenderOperation& op ) { op = mRenderOperation; }
336 
338  Real getSquaredViewDepth( const Camera* cam ) const;
340  const LightList& getLights( void ) const;
342  Technique* getTechnique(void) const;
343 
345  const String& getMovableType(void) const;
349  const AxisAlignedBox& getBoundingBox(void) const;
351  Real getBoundingRadius(void) const;
352 
353  virtual void _updateRenderQueue(RenderQueue* queue);
354  void visitRenderables( Renderable::Visitor* visitor, bool debugRenderables = false );
355 
356  // resolve ambiguity of get/setUserAny due to inheriting from Renderable and MovableObject
359  };
360 } // namespace Ogre
361 
362 #include "OgreHeaderSuffix.h"
363 
364 #endif // __InstanceBatch_H__
#define _OgreExport
Definition: OgrePlatform.h:257
A 3D box aligned with the x/y/z axes.
A viewpoint from which the scene will be rendered.
Definition: OgreCamera.h:87
InstanceBatch forms part of the new Instancing system This is an abstract class that must be derived ...
This is the main starting point for the new instancing system.
vector< unsigned short >::type IndexMap
Definition: OgreMesh.h:108
Abstract class defining a movable object in a scene.
'New' rendering operation using vertex buffers.
Class to manage the scene object rendering queue.
Visitor object that can be used to iterate over a collection of Renderable instances abstractly.
Abstract class defining the interface all renderable objects must implement.
virtual OGRE_DEPRECATED void setUserAny(const Any &anything)
virtual OGRE_DEPRECATED const Any & getUserAny(void) const
Defines a part of a complete mesh.
Definition: OgreSubMesh.h:63
Class representing an approach to rendering this particular Material.
Definition: OgreTechnique.h:54
4-dimensional homogeneous vector.
Definition: OgreVector4.h:46
virtual bool checkSubMeshCompatibility(const SubMesh *baseSubMesh)
Returns false on errors that would prevent building this batch from the given submesh.
InstanceBatch(InstanceManager *creator, MeshPtr &meshReference, const MaterialPtr &material, size_t instancesPerBatch, const Mesh::IndexMap *indexToBoneMap, const String &batchName)
CustomParamsVec mCustomParams
bool isBatchUnused(void) const
Returns true if it no instanced entity has been requested or all of them have been removed.
Mesh::IndexMap const * mIndexToBoneMap
Real getSquaredViewDepth(const Camera *cam) const
AxisAlignedBox mFullBoundingBox
This bbox contains all (visible) instanced entities.
virtual void setupIndices(const SubMesh *baseSubMesh)=0
InstancedEntityVec mInstancedEntities
void _markTransformSharingDirty()
Tells that the list of entity instances with shared transforms has changed.
const LightList & getLights(void) const
const Mesh::IndexMap * _getIndexToBoneMap() const
const AxisAlignedBox & getBoundingBox(void) const
vector< Vector4 >::type CustomParamsVec
virtual size_t calculateMaxNumInstances(const SubMesh *baseSubMesh, uint16 flags) const =0
Some techniques have a limit on how many instances can be done.
void _defragmentBatch(bool optimizeCulling, InstancedEntityVec &usedEntities, CustomParamsVec &usedParams)
bool mRemoveOwnIndexData
When true remove the memory of the IndexData we've created because no one else will.
Real mCachedCameraDist
Cached distance to last camera for getSquaredViewDepth.
void defragmentBatchDoCull(InstancedEntityVec &usedEntities, CustomParamsVec &usedParams)
const String & getMovableType(void) const
bool _supportsSkeletalAnimation() const
Returns true if this technique supports skeletal animation.
bool mTechnSupportsSkeletal
False if a technique doesn't support skeletal animation.
void _setCustomParam(InstancedEntity *instancedEntity, unsigned char idx, const Vector4 &newParam)
void defragmentBatchNoCull(InstancedEntityVec &usedEntities, CustomParamsVec &usedParams)
virtual ~InstanceBatch()
void removeInstancedEntity(InstancedEntity *instancedEntity)
Removes an InstancedEntity from the scene retrieved with getNewInstancedEntity, putting back into a q...
Technique * getTechnique(void) const
virtual void buildFrom(const SubMesh *baseSubMesh, const RenderOperation &renderOperation)
Instancing consumes significantly more GPU memory than regular rendering methods.
virtual void createAllInstancedEntities(void)
virtual void deleteUnusedInstancedEntities(void)
InstancedEntity * createInstancedEntity()
Returns a pointer to a new InstancedEntity ready to use Note it's actually preallocated,...
void _defragmentBatchDiscard(void)
Real getBoundingRadius(void) const
virtual RenderOperation build(const SubMesh *baseSubMesh)
Constructs all the data needed to use this batch, as well as the InstanceEntities.
void _updateBounds(void)
void _setInstancesPerBatch(size_t instancesPerBatch)
Raises an exception if trying to change it after being built.
virtual InstancedEntity * generateInstancedEntity(size_t num)
Creates a new InstancedEntity instance.
virtual void deleteAllInstancedEntities(void)
InstancedEntityVec mUnusedEntities
void visitRenderables(Renderable::Visitor *visitor, bool debugRenderables=false)
Method to allow a caller to abstractly iterate over the Renderable instances that this MovableObject ...
bool mRemoveOwnVertexData
When true remove the memory of the VertexData we've created because no one else will.
virtual void _boundsDirty(void)
Called by InstancedEntity(s) to tell us we need to update the bounds (we touch the SceneNode so the S...
virtual void _updateRenderQueue(RenderQueue *queue)
Internal method by which the movable object must add Renderable subclass instances to the rendering q...
virtual void setupVertices(const SubMesh *baseSubMesh)=0
virtual void setStaticAndUpdate(bool bStatic)
Tells this batch to stop updating animations, positions, rotations, and display all it's active insta...
bool isBatchFull(void) const
const Camera * mCachedCamera
The camera for which the cached distance is valid.
const Ogre::MeshPtr & _getMeshReference(void) const
const MaterialPtr & getMaterial(void) const
void getRenderOperation(RenderOperation &op)
InstanceManager * mCreator
void makeMatrixCameraRelative3x4(float *mat3x4, size_t numFloats)
Takes an array of 3x4 matrices and makes it camera relative.
void updateVisibility(void)
RenderOperation mRenderOperation
virtual bool useBoneWorldMatrices() const
Tells whether world bone matrices need to be calculated.
void _notifyCurrentCamera(Camera *cam)
void getInstancedEntitiesInUse(InstancedEntityVec &outEntities, CustomParamsVec &outParams)
Fills the input vector with the instances that are currently being used or were requested.
unsigned short mMaterialLodIndex
bool mTransformSharingDirty
Tells that the list of entity instances with shared transforms has changed.
vector< InstancedEntity * >::type InstancedEntityVec
virtual bool isStatic() const
Returns true if this batch was set as static.
const Vector4 & _getCustomParam(InstancedEntity *instancedEntity, unsigned char idx)
float Real
Software floating point type.
unsigned short uint16
Definition: OgrePlatform.h:360
_StringBase String

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