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basisCurvesShaderKey.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:
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14 // You may obtain a copy of the Apache License at
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24 #ifndef PXR_IMAGING_HD_ST_BASIS_CURVES_SHADER_KEY_H
25 #define PXR_IMAGING_HD_ST_BASIS_CURVES_SHADER_KEY_H
26 
27 #include "pxr/pxr.h"
28 #include "pxr/imaging/hd/version.h"
29 #include "pxr/imaging/hd/enums.h"
30 #include "pxr/imaging/hdSt/geometricShader.h"
31 #include "pxr/imaging/hdSt/shaderKey.h"
32 #include "pxr/base/tf/token.h"
33 
34 PXR_NAMESPACE_OPEN_SCOPE
35 
56 struct HdSt_BasisCurvesShaderKey : public HdSt_ShaderKey
57 {
58  enum DrawStyle{
59  POINTS, // Draws only the control vertices.
60  WIRE, // Draws as lines or isolines, tessellated along length
61  RIBBON, // Draws as patch, tessellated along length only
62  HALFTUBE // Draws as patch, displaced into a half tube shape
63  };
64 
65  enum NormalStyle{
66  ORIENTED, // Orient to user supplied normals
67  HAIR, // Generated camera oriented normal
68  ROUND // Generated camera oriented normal as a tube
69  };
70 
71  HdSt_BasisCurvesShaderKey(TfToken const &type, TfToken const &basis,
72  DrawStyle drawStyle, NormalStyle normalStyle,
73  bool basisWidthInterpolation,
74  bool basisNormalInterpolation,
75  TfToken shadingTerminal,
76  bool hasAuthoredTopologicalVisibility);
77  ~HdSt_BasisCurvesShaderKey();
78 
79  TfToken const &GetGlslfxFilename() const override { return glslfx; }
80  TfToken const *GetVS() const override { return VS; }
81  TfToken const *GetTCS() const override { return TCS; }
82  TfToken const *GetTES() const override { return TES; }
83  TfToken const *GetFS() const override { return FS; }
84 
85  HdSt_GeometricShader::PrimitiveType GetPrimitiveType() const override {
86  return primType;
87  }
88 
89  HdSt_GeometricShader::PrimitiveType primType;
90  TfToken glslfx;
91  TfToken VS[7];
92  TfToken TCS[4];
93  TfToken TES[8];
94  TfToken FS[8];
95 };
96 
97 
98 PXR_NAMESPACE_CLOSE_SCOPE
99 
100 #endif // HDST_BASIS_CURVES_SHADER_KEY
Token for efficient comparison, assignment, and hashing of known strings.
Definition: token.h:87