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Hd_AdjacencyBuilderComputation Class Reference

#include <vertexAdjacency.h>

+ Inheritance diagram for Hd_AdjacencyBuilderComputation:

Public Member Functions

HD_API Hd_AdjacencyBuilderComputation (Hd_VertexAdjacency *adjacency, HdMeshTopology const *topology)
virtual HD_API bool Resolve () override
- Public Member Functions inherited from HdNullBufferSource
virtual HD_API TfToken constGetName () const override
 Return the name of this buffer source. More...
virtual HD_API void constGetData () const override
 Following interfaces will be called after Resolve. More...
virtual HD_API size_t ComputeHash () const override
 Computes and returns a hash value for the underlying data. More...
virtual HD_API size_t GetNumElements () const override
virtual HD_API HdTupleType GetTupleType () const override
 Returns the data type and count (array size) for this buffer source. More...
virtual HD_API void GetBufferSpecs (HdBufferSpecVector *specs) const override
- Public Member Functions inherited from HdBufferSource
 HdBufferSource ()
virtual HD_API ~HdBufferSource ()
bool IsResolved () const
 Returns true it this computation has already been resolved. More...
bool HasResolveError () const
 Returns true if an error occurred during resolve. More...
HD_API bool IsValid () const
virtual HD_API bool HasPreChainedBuffer () const
 Returns true if this buffer has a pre-chained buffer. More...
virtual HD_API
GetPreChainedBuffer () const
 Returns the pre-chained buffer. More...
virtual HD_API bool HasChainedBuffer () const
 Returns true if this buffer has any chained buffer(s) More...
virtual HD_API
GetChainedBuffers () const
 Returns the vector of chained buffers. More...

Protected Member Functions

virtual HD_API bool _CheckValid () const override
- Protected Member Functions inherited from HdBufferSource
void _SetResolved ()
void _SetResolveError ()
bool _TryLock ()

Detailed Description

A null buffer source to compute the adjacency table. Since this is a null buffer source, it won't actually produce buffer output; but other computations can depend on this to ensure BuildAdjacencyTable is called.

Definition at line 143 of file vertexAdjacency.h.

Constructor & Destructor Documentation

HD_API Hd_AdjacencyBuilderComputation::Hd_AdjacencyBuilderComputation ( Hd_VertexAdjacency adjacency,
HdMeshTopology const topology 

Member Function Documentation

virtual HD_API bool Hd_AdjacencyBuilderComputation::_CheckValid ( ) const

Checks the validity of the source buffer. This function is called by IsValid() to do the real checking.

Should only be implemented in classes at leafs of the class hierarchy (Please place common validation code in a new non-virtual method)

This code should return false:

  • If the buffer would produce an invalid BufferSpec
  • If a required dependent buffer is invalid For example, return false when: The data type is invalid, causing an invalid BufferSpec.

The resolve step requires a 'source' buffer and that buffer is invalid.

If returning false, the buffer will not be registered with the resource registry. AddBufferSpec and Resolve will not be called

Implements HdBufferSource.

virtual HD_API bool Hd_AdjacencyBuilderComputation::Resolve ( )

Prepare the access of GetData(). This process may include some computations (e.g. cpu smooth normals). Note: Resolve may be called in parallel from multiple threads across buffer sources, so be careful if it uses static/shared states among objects. Returns true if it resolved. If the buffer source has to wait some results of other buffer sources, or the buffer source is being resolved by other threads, it returns false.

Implements HdBufferSource.

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