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glPtexTexture.h
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1 //
2 // Copyright 2013 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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24 
25 #ifndef OSD_GL_PTEX_TEXTURE_H
26 #define OSD_GL_PTEX_TEXTURE_H
27 
28 #include "../version.h"
29 
30 #include "../osd/nonCopyable.h"
31 
32 #include "../osd/opengl.h"
33 
34 class PtexTexture;
35 
36 namespace OpenSubdiv {
37 namespace OPENSUBDIV_VERSION {
38 
39 namespace Osd {
40 
59 class GLPtexTexture : NonCopyable<GLPtexTexture> {
60 public:
61  static GLPtexTexture * Create(PtexTexture * reader,
62  unsigned long int targetMemory = 0,
63  int gutterWidth = 0,
64  int pageMargin = 0);
65 
68  GLuint GetPagesTextureBuffer() const { return _pages; }
69 
72  GLuint GetLayoutTextureBuffer() const { return _layout; }
73 
75  GLuint GetTexelsTexture() const { return _texels; }
76 
78 
79 private:
80  GLPtexTexture();
81 
82  GLsizei _width, // widht / height / depth of the 3D texel buffer
83  _height,
84  _depth;
85 
86  GLint _format; // texel color format
87 
88  GLuint _pages, // per-face page indices into the texel array
89  _layout, // per-face lookup table (vec4 : top-left corner & width / height)
90  _texels; // texel data
91 };
92 
93 } // end namespace Osd
94 
95 } // end namespace OPENSUBDIV_VERSION
96 using namespace OPENSUBDIV_VERSION;
97 
98 } // end namespace OpenSubdiv
99 
100 #endif // OSD_GL_PTEX_TEXTURE_H
101 
static GLPtexTexture * Create(PtexTexture *reader, unsigned long int targetMemory=0, int gutterWidth=0, int pageMargin=0)
GLuint GetTexelsTexture() const
Returns the texels texture array.
Definition: glPtexTexture.h:75