#include <renderIndex.h>

Public Types
typedef std::vector < HdDrawItem const * >	HdDrawItemPtrVector

Public Member Functions
HD_API	~HdRenderIndex ()

HD_API void	Clear ()
	Clear all r (render), s (state) and b (buffer) prims. More...

HD_API void	RemoveSubtree (const SdfPath &root, HdSceneDelegate *sceneDelegate)

HD_API SdfPath	GetRprimPathFromPrimId (int primId) const

Synchronization
HD_API void	EnqueueCollectionToSync (HdRprimCollection const &collection)

HD_API void	SyncAll (HdTaskSharedPtrVector tasks, HdTaskContext taskContext)

Execution
HD_API HdDrawItemPtrVector	GetDrawItems (HdRprimCollection const &collection, TfTokenVector const &renderTags)
	Returns a list of relevant draw items that match the criteria specified. More...

Change Tracker
HdChangeTracker &	GetChangeTracker ()

HdChangeTracker const &	GetChangeTracker () const

Renderable prims (e.g. meshes, basis curves)
HD_API bool	IsRprimTypeSupported (TfToken const &typeId) const
	Returns whether the rprim type is supported by this render index. More...

HD_API void	InsertRprim (TfToken const &typeId, HdSceneDelegate *sceneDelegate, SdfPath const &rprimId)
	Insert a rprim into index. More...

HD_API void	RemoveRprim (SdfPath const &id)
	Remove a rprim from index. More...

bool	HasRprim (SdfPath const &id)
	Returns true if rprim `id` exists in index. More...

HD_API HdRprim const *	GetRprim (SdfPath const &id) const
	Returns the rprim of id. More...

HD_API HdSceneDelegate *	GetSceneDelegateForRprim (SdfPath const &id) const
	Returns the scene delegate for the given rprim. More...

HD_API bool	GetSceneDelegateAndInstancerIds (SdfPath const &id, SdfPath sceneDelegateId, SdfPath instancerId) const

HD_API TfToken	GetRenderTag (SdfPath const &id) const
	Returns the render tag for the given rprim. More...

TfToken	UpdateRenderTag (SdfPath const &id, HdDirtyBits bits)
	Like GetRenderTag, but updates the render tag if dirty. More...

HD_API const SdfPathVector &	GetRprimIds ()

HD_API SdfPathVector	GetRprimSubtree (SdfPath const &root)
	Returns the subtree rooted under the given path. More...

Instancer Support
HD_API void	InsertInstancer (HdSceneDelegate *delegate, SdfPath const &id)
	Insert an instancer into index. More...

HD_API void	RemoveInstancer (SdfPath const &id)
	Remove an instancer from index. More...

bool	HasInstancer (SdfPath const &id)
	Returns true if instancer `id` exists in index. More...

HD_API HdInstancer *	GetInstancer (SdfPath const &id) const
	Returns the instancer of id. More...

Task Support
template<typename T >
void	InsertTask (HdSceneDelegate *delegate, SdfPath const &id)
	Inserts a new task into the render index with an identifier of `id`. More...

HD_API void	RemoveTask (SdfPath const &id)
	Removes the given task from the RenderIndex. More...

bool	HasTask (SdfPath const &id)
	Returns true if a task exists in the index with the given `id`. More...

HD_API HdTaskSharedPtr const &	GetTask (SdfPath const &id) const
	Returns the task for the given `id`. More...

Scene state prims (e.g. camera, light)
HD_API bool	IsSprimTypeSupported (TfToken const &typeId) const
	Returns whether the sprim type is supported by this render index. More...

HD_API void	InsertSprim (TfToken const &typeId, HdSceneDelegate *delegate, SdfPath const &sprimId)
	Insert a sprim into index. More...

HD_API void	RemoveSprim (TfToken const &typeId, SdfPath const &id)
	Returns whether the sprim type is supported by this render index. More...

HD_API HdSprim *	GetSprim (TfToken const &typeId, SdfPath const &id) const
	Returns whether the sprim type is supported by this render index. More...

HD_API SdfPathVector	GetSprimSubtree (TfToken const &typeId, SdfPath const &root)

HD_API HdSprim *	GetFallbackSprim (TfToken const &typeId) const
	Returns the fullback prim for the Sprim of the given type. More...

Buffer prims (e.g. textures, buffers)
HD_API bool	IsBprimTypeSupported (TfToken const &typeId) const
	Returns whether the bprim type is supported by this render index. More...

HD_API void	InsertBprim (TfToken const &typeId, HdSceneDelegate *delegate, SdfPath const &bprimId)
	Insert a bprim into index. More...

HD_API void	RemoveBprim (TfToken const &typeId, SdfPath const &id)
	Returns whether the bprim type is supported by this render index. More...

HD_API HdBprim *	GetBprim (TfToken const &typeId, SdfPath const &id) const
	Returns whether the bprim type is supported by this render index. More...

HD_API SdfPathVector	GetBprimSubtree (TfToken const &typeId, SdfPath const &root)

HD_API HdBprim *	GetFallbackBprim (TfToken const &typeId) const
	Returns the fallback prim for the Bprim of the given type. More...

Scene indices
HD_API void	InsertSceneIndex (HdSceneIndexBaseRefPtr inputSceneIndex, SdfPath const &scenePathPrefix)

HD_API void	RemoveSceneIndex (HdSceneIndexBaseRefPtr inputSceneIndex)

Static Public Member Functions
static HD_API HdRenderIndex *	New (HdRenderDelegate *renderDelegate, HdDriverVector const &drivers)

Render Delegate
class	HdSceneIndexAdapterSceneDelegate

static HD_API bool	IsSceneIndexEmulationEnabled ()

HD_API HdRenderDelegate *	GetRenderDelegate () const

HD_API HdDriverVector const &	GetDrivers () const

HD_API HdResourceRegistrySharedPtr	GetResourceRegistry () const

HD_API void	SceneIndexEmulationNoticeBatchBegin ()

HD_API void	SceneIndexEmulationNoticeBatchEnd ()

Detailed Description

The Hydra render index is a flattened representation of the client scene graph, which may be composed of several self-contained scene graphs, each of which provides a HdSceneDelegate adapter for data access.

Thus, multiple HdSceneDelegate's may be tied to the same HdRenderIndex.

The render index, however, is tied to a single HdRenderDelegate, which handles the actual creation and deletion of Hydra scene primitives. These include geometry and non-drawable objects (such as the camera and texture buffers). The render index simply holds a handle to these primitives, and tracks any changes to them via the HdChangeTracker. It also tracks computations and tasks that may update resources and render a subset of the renderable primitives.

The render index orchestrates the "syncing" of scene primitives, by providing the relevant scene delegate for data access, and leaves resource management to the rendering backend (via HdResourceRegistry).

It also provides "execution" functionality for application facing Hydra concepts (such as HdTask/HdRenderPass) in computing the set of HdDrawItems for a given HdRprimCollection, for rendering.

See Also: HdChangeTracker HdDrawItem HdRenderDelegate HdRprimCollection HdSceneDelegate

Note: The current design ties a HdRenderIndex to a HdRenderDelegate. However, the HdRenderIndex isn't tied to a viewer (viewport). It is common to have multiple viewers image the composed scene (for example, with different cameras), in which case the HdRenderIndex and HdRenderDelegate are shared by the viewers.

If two viewers use different HdRenderDelegate's, then it may unfortunately require populating two HdRenderIndex's.

Definition at line 120 of file renderIndex.h.

Member Typedef Documentation

typedef std::vector<HdDrawItem const*> HdRenderIndex::HdDrawItemPtrVector

Definition at line 123 of file renderIndex.h.

Constructor & Destructor Documentation

HD_API HdRenderIndex::~HdRenderIndex ( )

Member Function Documentation

HD_API void HdRenderIndex::Clear ( )

Clear all r (render), s (state) and b (buffer) prims.

HD_API void HdRenderIndex::EnqueueCollectionToSync ( HdRprimCollection const & collection )

Hydra's core currently needs to know the collections used by tasks to aggregate the reprs that need to be synced for the dirty Rprims.

HD_API HdBprim* HdRenderIndex::GetBprim	(	TfToken const &	typeId,
		SdfPath const &	id
	)		const

Returns whether the bprim type is supported by this render index.

HD_API SdfPathVector HdRenderIndex::GetBprimSubtree	(	TfToken const &	typeId,
		SdfPath const &	root
	)

Returns the subtree rooted under the given path for the given bprim type.

HdChangeTracker& HdRenderIndex::GetChangeTracker ( )

inline

Definition at line 192 of file renderIndex.h.

HdChangeTracker const& HdRenderIndex::GetChangeTracker ( ) const

inline

Definition at line 193 of file renderIndex.h.

HD_API HdDrawItemPtrVector HdRenderIndex::GetDrawItems	(	HdRprimCollection const &	collection,
		TfTokenVector const &	renderTags
	)

Returns a list of relevant draw items that match the criteria specified.

The is typically called during render pass execution, which is the final phase in the Hydra's execution. See HdRenderPass::Execute

HD_API HdDriverVector const& HdRenderIndex::GetDrivers ( ) const

Returns true if scene index features are available This is true by default but can be controlled via an HD_ENABLE_SCENE_INDEX_EMULATION environment variable.

HD_API HdBprim* HdRenderIndex::GetFallbackBprim ( TfToken const & typeId ) const

Returns the fallback prim for the Bprim of the given type.

HD_API HdSprim* HdRenderIndex::GetFallbackSprim ( TfToken const & typeId ) const

Returns the fullback prim for the Sprim of the given type.

HD_API HdInstancer* HdRenderIndex::GetInstancer ( SdfPath const & id ) const

Returns the instancer of id.

HD_API HdRenderDelegate* HdRenderIndex::GetRenderDelegate ( ) const

Currently, a render index only supports connection to one type of render delegate, due to the inserted information and change tracking being specific to that delegate type.

HD_API TfToken HdRenderIndex::GetRenderTag ( SdfPath const & id ) const

Returns the render tag for the given rprim.

HD_API HdResourceRegistrySharedPtr HdRenderIndex::GetResourceRegistry ( ) const

Returns a shared ptr to the resource registry of the current render delegate.

HD_API HdRprim const* HdRenderIndex::GetRprim ( SdfPath const & id ) const

Returns the rprim of id.

HD_API const SdfPathVector& HdRenderIndex::GetRprimIds ( )

inline

Returns a sorted list of all Rprims in the render index. The list is sorted by std::less<SdfPath>

Definition at line 244 of file renderIndex.h.

HD_API SdfPath HdRenderIndex::GetRprimPathFromPrimId ( int primId ) const

Given a prim id, returns the path of the corresponding rprim or an empty path if none is found.

HD_API SdfPathVector HdRenderIndex::GetRprimSubtree ( SdfPath const & root )

Returns the subtree rooted under the given path.

HD_API bool HdRenderIndex::GetSceneDelegateAndInstancerIds	(	SdfPath const &	id,
		SdfPath *	sceneDelegateId,
		SdfPath *	instancerId
	)		const

Query function to return the id's of the scene delegate and instancer associated with the Rprim at the given path.

HD_API HdSceneDelegate* HdRenderIndex::GetSceneDelegateForRprim ( SdfPath const & id ) const

Returns the scene delegate for the given rprim.

HD_API HdSprim* HdRenderIndex::GetSprim	(	TfToken const &	typeId,
		SdfPath const &	id
	)		const

Returns whether the sprim type is supported by this render index.

HD_API SdfPathVector HdRenderIndex::GetSprimSubtree	(	TfToken const &	typeId,
		SdfPath const &	root
	)

Returns the subtree rooted under the given path for the given sprim type.

HD_API HdTaskSharedPtr const& HdRenderIndex::GetTask ( SdfPath const & id ) const

Returns the task for the given id.

bool HdRenderIndex::HasInstancer ( SdfPath const & id )

inline

Returns true if instancer id exists in index.

Definition at line 266 of file renderIndex.h.

bool HdRenderIndex::HasRprim ( SdfPath const & id )

inline

Returns true if rprim id exists in index.

Definition at line 214 of file renderIndex.h.

bool HdRenderIndex::HasTask ( SdfPath const & id )

inline

Returns true if a task exists in the index with the given id.

Definition at line 287 of file renderIndex.h.

HD_API void HdRenderIndex::InsertBprim	(	TfToken const &	typeId,
		HdSceneDelegate *	delegate,
		SdfPath const &	bprimId
	)

Insert a bprim into index.

HD_API void HdRenderIndex::InsertInstancer	(	HdSceneDelegate *	delegate,
		SdfPath const &	id
	)

Insert an instancer into index.

HD_API void HdRenderIndex::InsertRprim	(	TfToken const &	typeId,
		HdSceneDelegate *	sceneDelegate,
		SdfPath const &	rprimId
	)

Insert a rprim into index.

HD_API void HdRenderIndex::InsertSceneIndex	(	HdSceneIndexBaseRefPtr	inputSceneIndex,
		SdfPath const &	scenePathPrefix
	)

HD_API void HdRenderIndex::InsertSprim	(	TfToken const &	typeId,
		HdSceneDelegate *	delegate,
		SdfPath const &	sprimId
	)

Insert a sprim into index.

template<typename T >

void HdRenderIndex::InsertTask	(	HdSceneDelegate *	delegate,
		SdfPath const &	id
	)

Inserts a new task into the render index with an identifier of id.

Definition at line 577 of file renderIndex.h.

HD_API bool HdRenderIndex::IsBprimTypeSupported ( TfToken const & typeId ) const

Returns whether the bprim type is supported by this render index.

HD_API bool HdRenderIndex::IsRprimTypeSupported ( TfToken const & typeId ) const

Returns whether the rprim type is supported by this render index.

static HD_API bool HdRenderIndex::IsSceneIndexEmulationEnabled ( )

static

Returns true if scene index features are available This is true by default but can be controlled via an HD_ENABLE_SCENE_INDEX_EMULATION environment variable.

HD_API bool HdRenderIndex::IsSprimTypeSupported ( TfToken const & typeId ) const

Returns whether the sprim type is supported by this render index.

static HD_API HdRenderIndex* HdRenderIndex::New	(	HdRenderDelegate *	renderDelegate,
		HdDriverVector const &	drivers
	)

static

Create a render index with the given render delegate. Returns null if renderDelegate is null. The render delegate and render tasks may require access to a renderer's device provided by the application. The objects can be passed in as 'drivers'. Hgi is an example of a HdDriver.

HD_API void HdRenderIndex::RemoveBprim	(	TfToken const &	typeId,
		SdfPath const &	id
	)

Returns whether the bprim type is supported by this render index.

HD_API void HdRenderIndex::RemoveInstancer ( SdfPath const & id )

Remove an instancer from index.

HD_API void HdRenderIndex::RemoveRprim ( SdfPath const & id )

Remove a rprim from index.

HD_API void HdRenderIndex::RemoveSceneIndex ( HdSceneIndexBaseRefPtr inputSceneIndex )

HD_API void HdRenderIndex::RemoveSprim	(	TfToken const &	typeId,
		SdfPath const &	id
	)

Returns whether the sprim type is supported by this render index.

HD_API void HdRenderIndex::RemoveSubtree	(	const SdfPath &	root,
		HdSceneDelegate *	sceneDelegate
	)

Clear all entries in the render index under the given root and belong to a specified delegate.

Used for example to unload a delegate.

HD_API void HdRenderIndex::RemoveTask ( SdfPath const & id )

Removes the given task from the RenderIndex.

HD_API void HdRenderIndex::SceneIndexEmulationNoticeBatchBegin ( )

An application or legacy scene delegate may prefer for the scene index observer notices generated from its prim insertions, removals, or invalidations to be consolidated into vectorized batches. Calling this will cause subsequent notices to be be queued.

NOTE: This does not currently track any nested state. Repeated calls prior to a corresponding SceneIndexEmulationNoticeBatchEnd will have no effect.

HD_API void HdRenderIndex::SceneIndexEmulationNoticeBatchEnd ( )

Flushes any queued scene index observer notices and disables further queueing.

NOTE: This does not currently track any nested state. Calling this will immediately flush and disable queueing regardless of the number of times SceneIndexEmulationNoticeBatchBegin is called prior.

HD_API void HdRenderIndex::SyncAll	(	HdTaskSharedPtrVector *	tasks,
		HdTaskContext *	taskContext
	)

Syncs input tasks, B & S prims, (external) computations and updates the Rprim dirty list to then sync the Rprims. At the end of this step, all the resources that need to be updated have handles to their data sources. This is the first phase in Hydra's execution. See HdEngine::Execute

TfToken HdRenderIndex::UpdateRenderTag	(	SdfPath const &	id,
		HdDirtyBits	bits
	)

Like GetRenderTag, but updates the render tag if dirty.

Friends And Related Function Documentation

friend class HdSceneIndexAdapterSceneDelegate

friend

Returns true if scene index features are available This is true by default but can be controlled via an HD_ENABLE_SCENE_INDEX_EMULATION environment variable.

Definition at line 463 of file renderIndex.h.

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

pxr/imaging/hd/renderIndex.h

Public Types

Public Member Functions

Static Public Member Functions

Render Delegate

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation