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oitBufferAccessor.h
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1 //
2 // Copyright 2019 Pixar
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5 // with the following modification; you may not use this file except in
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24 #ifndef PXR_IMAGING_HDX_OIT_BUFFER_ACCESSOR_H
25 #define PXR_IMAGING_HDX_OIT_BUFFER_ACCESSOR_H
26 
27 #include "pxr/pxr.h"
28 #include "pxr/imaging/hdx/api.h"
30 
31 #include "pxr/imaging/hd/task.h"
32 
33 #include <memory>
34 
36 
38  std::shared_ptr<class HdBufferArrayRange>;
39 
41  std::shared_ptr<class HdStRenderPassShader>;
42 
43 /// Class for OIT render tasks to access the OIT buffers.
45 public:
46  static bool IsOitEnabled();
47 
48  HDX_API
50 
51  /// Called during Prepare to indicate that OIT buffers are needed.
52  HDX_API
53  void RequestOitBuffers();
54 
55  /// Called during Excecute before writing to OIT buffers.
56  HDX_API
58 
59  /// Called during Execute to add necessary OIT buffer shader bindings.
60  ///
61  /// Returns false if the OIT buffers were not allocated.
62  HDX_API
64 
65 private:
66  HdBufferArrayRangeSharedPtr const &_GetBar(const TfToken &);
67 
68  HdTaskContext * const _ctx;
69 };
70 
72 
73 #endif
HDX_API HdxOitBufferAccessor(HdTaskContext *ctx)
HDX_API bool AddOitBufferBindings(const HdStRenderPassShaderSharedPtr &)
#define HDX_API
Definition: api.h:40
Definition: token.h:87
Class for OIT render tasks to access the OIT buffers.
HDX_API void RequestOitBuffers()
Called during Prepare to indicate that OIT buffers are needed.
std::unordered_map< TfToken, VtValue, TfToken::HashFunctor > HdTaskContext
Definition: renderIndex.h:73
std::shared_ptr< class HdStRenderPassShader > HdStRenderPassShaderSharedPtr
PXR_NAMESPACE_CLOSE_SCOPE PXR_NAMESPACE_OPEN_SCOPE
Definition: path.h:1346
HDX_API void InitializeOitBuffersIfNecessary()
Called during Excecute before writing to OIT buffers.
static bool IsOitEnabled()
#define PXR_NAMESPACE_CLOSE_SCOPE
Definition: pxr.h:91
std::shared_ptr< HdBufferArrayRange > HdBufferArrayRangeSharedPtr
Definition: bufferArray.h:45