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Open-source, cross-platform 2D and 3D game engine built in C++
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Urho3D::IndexBuffer Class Reference

Hardware index buffer. More...

#include </var/dev/u3d/stable/Source/Urho3D/Graphics/IndexBuffer.h>

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Public Member Functions

 IndexBuffer (Context *context, bool forceHeadless=false)
 Construct. Optionally force headless (no GPU-side buffer) operation.
 
 ~IndexBuffer () override
 Destruct.
 
void OnDeviceLost () override
 Mark the buffer destroyed on graphics context destruction. May be a no-op depending on the API. More...
 
void OnDeviceReset () override
 Recreate the buffer and restore data if applicable. May be a no-op depending on the API. More...
 
void Release () override
 Release buffer. More...
 
void SetShadowed (bool enable)
 
bool SetSize (unsigned indexCount, bool largeIndices, bool dynamic=false)
 Set size and vertex elements and dynamic mode. Previous data will be lost.
 
bool SetData (const void *data)
 Set all data in the buffer.
 
bool SetDataRange (const void *data, unsigned start, unsigned count, bool discard=false)
 Set a data range in the buffer. Optionally discard data outside the range.
 
void * Lock (unsigned start, unsigned count, bool discard=false)
 Lock the buffer for write-only editing. Return data pointer if successful. Optionally discard data outside the range.
 
void Unlock ()
 Unlock the buffer and apply changes to the GPU buffer.
 
bool IsShadowed () const
 
bool IsDynamic () const
 
bool IsLocked () const
 Return whether is currently locked.
 
unsigned GetIndexCount () const
 
unsigned GetIndexSize () const
 
bool GetUsedVertexRange (unsigned start, unsigned count, unsigned &minVertex, unsigned &vertexCount)
 Return used vertex range from index range.
 
unsigned char * GetShadowData () const
 Return CPU memory shadow data.
 
SharedArrayPtr< unsigned char > GetShadowDataShared () const
 Return shared array pointer to the CPU memory shadow data.
 
- Public Member Functions inherited from Urho3D::Object
 Object (Context *context)
 Construct.
 
 ~Object () override
 Destruct. Clean up self from event sender & receiver structures.
 
virtual StringHash GetType () const =0
 
virtual const StringGetTypeName () const =0
 
virtual const TypeInfoGetTypeInfo () const =0
 Return type info.
 
virtual void OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
 Handle event.
 
bool IsInstanceOf (StringHash type) const
 Check current instance is type of specified type.
 
bool IsInstanceOf (const TypeInfo *typeInfo) const
 Check current instance is type of specified type.
 
template<typename T >
bool IsInstanceOf () const
 Check current instance is type of specified class.
 
template<typename T >
T * Cast ()
 Cast the object to specified most derived class.
 
template<typename T >
const T * Cast () const
 Cast the object to specified most derived class.
 
void SubscribeToEvent (StringHash eventType, EventHandler *handler)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, EventHandler *handler)
 Subscribe to a specific sender's event.
 
void SubscribeToEvent (StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 Subscribe to a specific sender's event.
 
void UnsubscribeFromEvent (StringHash eventType)
 Unsubscribe from an event.
 
void UnsubscribeFromEvent (Object *sender, StringHash eventType)
 Unsubscribe from a specific sender's event.
 
void UnsubscribeFromEvents (Object *sender)
 Unsubscribe from a specific sender's events.
 
void UnsubscribeFromAllEvents ()
 Unsubscribe from all events.
 
void UnsubscribeFromAllEventsExcept (const PODVector< StringHash > &exceptions, bool onlyUserData)
 Unsubscribe from all events except those listed, and optionally only those with userdata (script registered events).
 
void SendEvent (StringHash eventType)
 Send event to all subscribers.
 
void SendEvent (StringHash eventType, VariantMap &eventData)
 Send event with parameters to all subscribers.
 
VariantMapGetEventDataMap () const
 Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.
 
template<typename... Args>
void SendEvent (StringHash eventType, Args... args)
 Send event with variadic parameter pairs to all subscribers. The parameter pairs is a list of paramID and paramValue separated by comma, one pair after another.
 
ContextGetContext () const
 Return execution context.
 
const VariantGetGlobalVar (StringHash key) const
 
const VariantMapGetGlobalVars () const
 
void SetGlobalVar (StringHash key, const Variant &value)
 
ObjectGetSubsystem (StringHash type) const
 Return subsystem by type.
 
ObjectGetEventSender () const
 Return active event sender. Null outside event handling.
 
EventHandlerGetEventHandler () const
 Return active event handler. Null outside event handling.
 
bool HasSubscribedToEvent (StringHash eventType) const
 Return whether has subscribed to an event without specific sender.
 
bool HasSubscribedToEvent (Object *sender, StringHash eventType) const
 Return whether has subscribed to a specific sender's event.
 
bool HasEventHandlers () const
 Return whether has subscribed to any event.
 
template<class T >
T * GetSubsystem () const
 Template version of returning a subsystem.
 
const StringGetCategory () const
 
void SetBlockEvents (bool block)
 Block object from sending and receiving events.
 
bool GetBlockEvents () const
 Return sending and receiving events blocking status.
 
- Public Member Functions inherited from Urho3D::RefCounted
 RefCounted ()
 Construct. Allocate the reference count structure and set an initial self weak reference.
 
virtual ~RefCounted ()
 Destruct. Mark as expired and also delete the reference count structure if no outside weak references exist.
 
 RefCounted (const RefCounted &rhs)=delete
 Prevent copy construction.
 
RefCountedoperator= (const RefCounted &rhs)=delete
 Prevent assignment.
 
void AddRef ()
 
void ReleaseRef ()
 
int Refs () const
 
int WeakRefs () const
 
RefCountRefCountPtr ()
 Return pointer to the reference count structure.
 
- Public Member Functions inherited from Urho3D::GPUObject
 GPUObject (Graphics *graphics)
 Construct with graphics subsystem pointer.
 
virtual ~GPUObject ()
 Destruct. Remove from the Graphics.
 
virtual void OnDeviceLost ()
 Mark the GPU resource destroyed on graphics context destruction. More...
 
virtual void OnDeviceReset ()
 Recreate the GPU resource and restore data if applicable. More...
 
virtual void Release ()
 Unconditionally release the GPU resource. More...
 
void ClearDataLost ()
 Clear the data lost flag.
 
GraphicsGetGraphics () const
 Return the graphics subsystem associated with this GPU object.
 
void * GetGPUObject () const
 Return the object pointer. Applicable only on Direct3D.
 
unsigned GetGPUObjectName () const
 Return the object name. Applicable only on OpenGL.
 
bool IsDataLost () const
 
bool HasPendingData () const
 Return whether has pending data assigned while graphics context was lost.
 

Private Member Functions

 URHO3D_OBJECT (IndexBuffer, Object)
 
bool Create ()
 Create buffer.
 
bool UpdateToGPU ()
 Update the shadow data to the GPU buffer.
 
void * MapBuffer (unsigned start, unsigned count, bool discard)
 Map the GPU buffer into CPU memory. Not used on OpenGL.
 
void UnmapBuffer ()
 Unmap the GPU buffer. Not used on OpenGL.
 

Private Attributes

SharedArrayPtr< unsigned char > shadowData_
 Shadow data.
 
unsigned indexCount_
 Number of indices.
 
unsigned indexSize_
 Index size.
 
LockState lockState_
 Buffer locking state.
 
unsigned lockStart_
 Lock start vertex.
 
unsigned lockCount_
 Lock number of vertices.
 
void * lockScratchData_
 Scratch buffer for fallback locking.
 
bool dynamic_
 Dynamic flag.
 
bool shadowed_
 Shadowed flag.
 
bool discardLock_
 Discard lock flag. Used by OpenGL only.
 

Additional Inherited Members

- Static Public Member Functions inherited from Urho3D::Object
static const TypeInfoGetTypeInfoStatic ()
 Return type info static.
 
- Protected Attributes inherited from Urho3D::Object
Contextcontext_
 Execution context.
 
- Protected Attributes inherited from Urho3D::GPUObject
WeakPtr< Graphicsgraphics_
 Graphics subsystem.
 
GPUObjectHandle object_ {}
 Object pointer or name.
 
bool dataLost_ {}
 Data lost flag.
 
bool dataPending_ {}
 Data pending flag.
 

Detailed Description

Hardware index buffer.

Member Function Documentation

◆ GetIndexCount()

unsigned Urho3D::IndexBuffer::GetIndexCount ( ) const
inline

Return number of indices.

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◆ GetIndexSize()

unsigned Urho3D::IndexBuffer::GetIndexSize ( ) const
inline

Return index size in bytes.

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◆ IsDynamic()

bool Urho3D::IndexBuffer::IsDynamic ( ) const
inline

Return whether is dynamic.

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◆ IsShadowed()

bool Urho3D::IndexBuffer::IsShadowed ( ) const
inline

Return whether CPU memory shadowing is enabled.

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◆ OnDeviceLost()

void Urho3D::IndexBuffer::OnDeviceLost ( )
overridevirtual

Mark the buffer destroyed on graphics context destruction. May be a no-op depending on the API.

Reimplemented from Urho3D::GPUObject.

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◆ OnDeviceReset()

void Urho3D::IndexBuffer::OnDeviceReset ( )
overridevirtual

Recreate the buffer and restore data if applicable. May be a no-op depending on the API.

Reimplemented from Urho3D::GPUObject.

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◆ Release()

void Urho3D::IndexBuffer::Release ( )
overridevirtual

Release buffer.

Reimplemented from Urho3D::GPUObject.

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◆ SetShadowed()

void Urho3D::IndexBuffer::SetShadowed ( bool  enable)

Enable shadowing in CPU memory. Shadowing is forced on if the graphics subsystem does not exist.

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