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renderPassShader.h
1 //
2 // Copyright 2016 Pixar
3 //
4 // Licensed under the Apache License, Version 2.0 (the "Apache License")
5 // with the following modification; you may not use this file except in
6 // compliance with the Apache License and the following modification to it:
7 // Section 6. Trademarks. is deleted and replaced with:
8 //
9 // 6. Trademarks. This License does not grant permission to use the trade
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11 // and its affiliates, except as required to comply with Section 4(c) of
12 // the License and to reproduce the content of the NOTICE file.
13 //
14 // You may obtain a copy of the Apache License at
15 //
16 // http://www.apache.org/licenses/LICENSE-2.0
17 //
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19 // distributed under the Apache License with the above modification is
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24 #ifndef HDST_RENDER_PASS_SHADER_H
25 #define HDST_RENDER_PASS_SHADER_H
26 
27 #include "pxr/pxr.h"
28 #include "pxr/imaging/hdSt/api.h"
29 #include "pxr/imaging/hd/enums.h"
30 #include "pxr/imaging/hd/binding.h"
31 #include "pxr/imaging/hdSt/resourceBinder.h"
32 #include "pxr/imaging/hdSt/shaderCode.h"
33 #include "pxr/imaging/hio/glslfx.h"
34 
35 #include "pxr/base/tf/declarePtrs.h"
36 #include "pxr/base/tf/token.h"
37 
38 #include <boost/shared_ptr.hpp>
39 
40 PXR_NAMESPACE_OPEN_SCOPE
41 
42 
43 typedef boost::shared_ptr<class HdStRenderPassShader> HdStRenderPassShaderSharedPtr;
44 
50 public:
51  HDST_API
53  HDST_API
54  HdStRenderPassShader(TfToken const &glslfxFile);
55  HDST_API
56  virtual ~HdStRenderPassShader() override;
57 
59  HDST_API
60  virtual ID ComputeHash() const override;
61  HDST_API
62  virtual std::string GetSource(TfToken const &shaderStageKey) const override;
63  HDST_API
64  virtual void BindResources(HdSt_ResourceBinder const &binder, int program) override;
65  HDST_API
66  virtual void UnbindResources(HdSt_ResourceBinder const &binder, int program) override;
67  HDST_API
68  virtual void AddBindings(HdBindingRequestVector *customBindings) override;
69 
71  HDST_API
72  void AddBufferBinding(HdBindingRequest const& req);
73 
75  HDST_API
76  void RemoveBufferBinding(TfToken const &name);
77 
79  HDST_API
80  void ClearBufferBindings();
81 
82  HdCullStyle GetCullStyle() const {
83  return _cullStyle;
84  }
85 
86  void SetCullStyle(HdCullStyle cullStyle) {
87  _cullStyle = cullStyle;
88  }
89 
90 private:
91  TfToken _glslfxFile;
92  boost::scoped_ptr<HioGlslfx> _glslfx;
93  mutable size_t _hash;
94  mutable bool _hashValid;
95 
96  TfHashMap<TfToken, HdBindingRequest, TfToken::HashFunctor> _customBuffers;
97  HdCullStyle _cullStyle;
98 
99 
100  // No copying
101  HdStRenderPassShader(const HdStRenderPassShader &) = delete;
102  HdStRenderPassShader &operator =(const HdStRenderPassShader &) = delete;
103 };
104 
105 
106 PXR_NAMESPACE_CLOSE_SCOPE
107 
108 #endif // HDST_RENDER_PASS_SHADER_H
virtual HDST_API void AddBindings(HdBindingRequestVector *customBindings) override
Add custom bindings (used by codegen)
virtual HDST_API ID ComputeHash() const override
HdShader overrides.
HDST_API void RemoveBufferBinding(TfToken const &name)
Remove name from custom binding.
virtual HDST_API std::string GetSource(TfToken const &shaderStageKey) const override
Returns the shader source provided by this shader for shaderStageKey.
Token for efficient comparison, assignment, and hashing of known strings.
Definition: token.h:89
HDST_API void ClearBufferBindings()
Clear all custom bindings associated with this shader.
virtual HDST_API void BindResources(HdSt_ResourceBinder const &binder, int program) override
Binds shader-specific resources to program XXX: this interface is meant to be used for bridging the G...
virtual HDST_API void UnbindResources(HdSt_ResourceBinder const &binder, int program) override
Unbinds shader-specific resources.
A base class representing the implementation (code) of a shader, used in conjunction with HdRenderPas...
Definition: shaderCode.h:59
A shader that supports common renderPass functionality.
BindingRequest allows externally allocated buffers to be bound at render time.
Definition: binding.h:116
HDST_API void AddBufferBinding(HdBindingRequest const &req)
Add a custom binding request for use when this shader executes.