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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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12 // the License and to reproduce the content of the NOTICE file.
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14 // You may obtain a copy of the Apache License at
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24 #ifndef HDST_BASIS_CURVES_SHADER_KEY_H
25 #define HDST_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/base/tf/token.h"
32 
33 PXR_NAMESPACE_OPEN_SCOPE
34 
55 struct HdSt_BasisCurvesShaderKey
56 {
57  enum DrawStyle{
58  POINTS, // Draws only the control vertices.
59  WIRE, // Draws as lines or isolines, tessellated along length
60  RIBBON, // Draws as patch, tessellated along length only
61  HALFTUBE // Draws as patch, displaced into a half tube shape
62  };
63 
64  enum NormalStyle{
65  ORIENTED, // Orient to user supplied normals
66  HAIR, // Generated camera oriented normal
67  ROUND // Generated camera oriented normal as a tube
68  };
69 
70 
71 
72  HdSt_BasisCurvesShaderKey(TfToken const &type, TfToken const &basis,
73  DrawStyle drawStyle, NormalStyle normalStyle,
74  bool basisWidthInterpolation,
75  bool basisNormalInterpolation);
76  ~HdSt_BasisCurvesShaderKey();
77 
78  TfToken const &GetGlslfxFile() const { return glslfx; }
79  TfToken const *GetVS() const { return VS; }
80  TfToken const *GetTCS() const { return TCS; }
81  TfToken const *GetTES() const { return TES; }
82  TfToken const *GetGS() const { return NULL; }
83  TfToken const *GetFS() const { return FS; }
84 
85  bool IsCullingPass() const { return false; }
86  HdCullStyle GetCullStyle() const { return HdCullStyleDontCare; }
87  HdPolygonMode GetPolygonMode() const { return HdPolygonModeFill; }
88  float GetLineWidth() const { return 0; }
89  HdSt_GeometricShader::PrimitiveType GetPrimitiveType() const {
90  return primType;
91  }
92 
93  HdSt_GeometricShader::PrimitiveType primType;
94  TfToken glslfx;
95  TfToken VS[7];
96  TfToken TCS[4];
97  TfToken TES[8];
98  TfToken FS[7];
99 };
100 
101 
102 PXR_NAMESPACE_CLOSE_SCOPE
103 
104 #endif // HDST_BASIS_CURVES_SHADER_KEY
Token for efficient comparison, assignment, and hashing of known strings.
Definition: token.h:89