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bindingMap.h
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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
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24 #ifndef PXR_IMAGING_GLF_BINDING_MAP_H
25 #define PXR_IMAGING_GLF_BINDING_MAP_H
26 
28 
29 #include "pxr/pxr.h"
30 #include "pxr/imaging/glf/api.h"
31 #include "pxr/imaging/garch/glApi.h"
32 #include "pxr/base/tf/refBase.h"
34 #include "pxr/base/tf/token.h"
35 #include "pxr/base/tf/weakBase.h"
36 
37 #include "pxr/base/tf/hashmap.h"
38 
39 PXR_NAMESPACE_OPEN_SCOPE
40 
41 
42 class GlfBindingMap : public TfRefBase, public TfWeakBase {
43 public:
44  typedef TfHashMap<TfToken, int, TfToken::HashFunctor> BindingMap;
45 
46  GlfBindingMap()
47  : _samplerBindingBaseIndex(0)
48  , _uniformBindingBaseIndex(0)
49  { }
50 
51  GLF_API
52  int GetSamplerUnit(std::string const &name);
53  GLF_API
54  int GetSamplerUnit(TfToken const & name);
55 
56  // If GetAttributeIndex is called with an unknown
57  // attribute token they return -1
58  GLF_API
59  int GetAttributeIndex(std::string const & name);
60  GLF_API
61  int GetAttributeIndex(TfToken const & name);
62 
63  GLF_API
64  int GetUniformBinding(std::string const & name);
65  GLF_API
66  int GetUniformBinding(TfToken const & name);
67 
68  GLF_API
69  bool HasUniformBinding(std::string const & name) const;
70  GLF_API
71  bool HasUniformBinding(TfToken const & name) const;
72 
73  int GetNumSamplerBindings() const {
74  return (int)_samplerBindings.size();
75  }
76 
77  void ClearAttribBindings() {
78  _attribBindings.clear();
79  }
80 
90 
91  void ResetSamplerBindings(int baseIndex) {
92  _samplerBindings.clear();
93  _samplerBindingBaseIndex = baseIndex;
94  }
95 
96  void ResetUniformBindings(int baseIndex) {
97  _uniformBindings.clear();
98  _uniformBindingBaseIndex = baseIndex;
99  }
100 
102 
103  void AddAttribBinding(TfToken const &name, int location) {
104  _attribBindings[name] = location;
105  }
106 
107  BindingMap const &GetAttributeBindings() const {
108  return _attribBindings;
109  }
110 
111  GLF_API
112  void AssignSamplerUnitsToProgram(GLuint program);
113 
114  GLF_API
115  void AssignUniformBindingsToProgram(GLuint program);
116 
117  GLF_API
118  void AddCustomBindings(GLuint program);
119 
120  GLF_API
121  void Debug() const;
122 
123 private:
124  void _AddActiveAttributeBindings(GLuint program);
125  void _AddActiveUniformBindings(GLuint program);
126  void _AddActiveUniformBlockBindings(GLuint program);
127 
128  BindingMap _attribBindings;
129  BindingMap _samplerBindings;
130  BindingMap _uniformBindings;
131 
132  int _samplerBindingBaseIndex;
133  int _uniformBindingBaseIndex;
134 };
135 
136 
137 PXR_NAMESPACE_CLOSE_SCOPE
138 
139 #endif // PXR_IMAGING_GLF_BINDING_MAP_H
Definitions of basic string utilities in tf.
Enable a concrete base class for use with TfRefPtr.
Definition: refBase.h:71
Token for efficient comparison, assignment, and hashing of known strings.
Definition: token.h:87
Enable a concrete base class for use with TfWeakPtr.
Definition: weakBase.h:141
TfToken class for efficient string referencing and hashing, plus conversions to and from stl string c...