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extCompGpuComputationResource.h
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2 // Copyright 2017 Pixar
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24 #ifndef PXR_IMAGING_HD_ST_EXT_COMP_GPU_COMPUTATION_RESOURCE_H
25 #define PXR_IMAGING_HD_ST_EXT_COMP_GPU_COMPUTATION_RESOURCE_H
26 
27 #include "pxr/pxr.h"
28 #include "pxr/imaging/hdSt/api.h"
29 #include "pxr/imaging/hd/bufferSource.h"
30 #include "pxr/imaging/hdSt/resourceBinder.h"
31 #include "pxr/imaging/hdSt/extCompComputeShader.h"
32 #include "pxr/imaging/hdSt/resourceRegistry.h"
33 
34 #include <vector>
35 
36 PXR_NAMESPACE_OPEN_SCOPE
37 
38 using HdStExtCompGpuComputationResourceSharedPtr =
39  std::shared_ptr<class HdStExtCompGpuComputationResource>;
40 using HdStGLSLProgramSharedPtr= std::shared_ptr<class HdStGLSLProgram>;
41 using HdBufferArrayRangeSharedPtrVector =
42  std::vector<HdBufferArrayRangeSharedPtr>;
43 
54 public:
74  HdBufferSpecVector const &outputBufferSpecs,
75  HdSt_ExtCompComputeShaderSharedPtr const &kernel,
76  HdBufferArrayRangeSharedPtrVector const &inputs,
77  HdStResourceRegistrySharedPtr const &registry
78  );
79 
80  virtual ~HdStExtCompGpuComputationResource() = default;
81 
84  HdBufferArrayRangeSharedPtrVector const &GetInputs() const {
85  return _inputs;
86  }
87 
92  HdStGLSLProgramSharedPtr const &GetProgram() {
93  if (!_computeProgram) {
94  _Resolve();
95  }
96  return _computeProgram;
97  }
98 
102  HdSt_ResourceBinder const &GetResourceBinder() {
103  if (!_computeProgram) {
104  _Resolve();
105  }
106  return _resourceBinder;
107  }
108 
109 private:
113  bool _Resolve();
114 
115  HdBufferSpecVector _outputBufferSpecs;
116  HdSt_ExtCompComputeShaderSharedPtr _kernel;
117  HdStResourceRegistrySharedPtr _registry;
118 
119  size_t _shaderSourceHash;
120  HdBufferArrayRangeSharedPtrVector _inputs;
121  HdStGLSLProgramSharedPtr _computeProgram;
122  HdSt_ResourceBinder _resourceBinder;
123 
126  const HdStExtCompGpuComputationResource &) = delete;
128  const HdStExtCompGpuComputationResource &) = delete;
129 };
130 
131 PXR_NAMESPACE_CLOSE_SCOPE
132 
133 #endif // PXR_IMAGING_HD_ST_EXT_COMP_GPU_COMPUTATION_RESOURCE_H
134 
HdBufferArrayRangeSharedPtrVector const & GetInputs() const
Gets the HdBufferArrayRange that inputs should be loaded into using the resource binder.
A resource that represents the persistent GPU resources of an ExtComputation.
HdStGLSLProgramSharedPtr const & GetProgram()
Gets the GPU HdStGLSLProgram to run to execute the computation.
HdSt_ResourceBinder const & GetResourceBinder()
Gets the resource binder that matches the layout of the compute program.