glVertexBuffer.h
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24 
25 #ifndef OPENSUBDIV3_OSD_GL_VERTEX_BUFFER_H
26 #define OPENSUBDIV3_OSD_GL_VERTEX_BUFFER_H
27 
28 #include "../version.h"
29 
30 #include "../osd/opengl.h"
31 #include <cstddef>
32 
33 namespace OpenSubdiv {
34 namespace OPENSUBDIV_VERSION {
35 
36 namespace Osd {
37 
45 public:
47  static GLVertexBuffer * Create(int numElements, int numVertices,
48  void *deviceContext = NULL);
49 
52 
55  void UpdateData(const float *src, int startVertex, int numVertices,
56  void *deviceContext = NULL);
57 
59  int GetNumElements() const;
60 
62  int GetNumVertices() const;
63 
65  GLuint BindVBO(void *deviceContext = NULL);
66 
67 protected:
69  GLVertexBuffer(int numElements, int numVertices);
70 
73  bool allocate();
74 
75 private:
76  int _numElements;
77  int _numVertices;
78  GLuint _vbo;
79 };
80 
81 } // end namespace Osd
82 
83 } // end namespace OPENSUBDIV_VERSION
84 using namespace OPENSUBDIV_VERSION;
85 
86 } // end namespace OpenSubdiv
87 
88 #endif // OPENSUBDIV3_OSD_GL_VERTEX_BUFFER_H
int GetNumElements() const
Returns how many elements defined in this vertex buffer.
Concrete vertex buffer class for GLSL subvision and OpenGL drawing.
GLVertexBuffer(int numElements, int numVertices)
Constructor.
GLuint BindVBO(void *deviceContext=NULL)
Returns the GL buffer object.
void UpdateData(const float *src, int startVertex, int numVertices, void *deviceContext=NULL)
static GLVertexBuffer * Create(int numElements, int numVertices, void *deviceContext=NULL)
Creator. Returns NULL if error.
int GetNumVertices() const
Returns how many vertices allocated in this vertex buffer.