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cpuGLVertexBuffer.h
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2 // Copyright 2013 Pixar
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24 
25 #ifndef OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
26 #define OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
27 
28 #include "../version.h"
29 
30 #include <cstddef>
31 #include "../osd/opengl.h"
32 
33 namespace OpenSubdiv {
34 namespace OPENSUBDIV_VERSION {
35 
36 namespace Osd {
37 
48 public:
50  static CpuGLVertexBuffer * Create(int numElements, int numVertices,
51  void *deviceContext = NULL);
52 
55 
58  void UpdateData(const float *src, int startVertex, int numVertices,
59  void *deviceContext = NULL);
60 
62  int GetNumElements() const;
63 
65  int GetNumVertices() const;
66 
69  float * BindCpuBuffer();
70 
73  GLuint BindVBO(void *deviceContext = NULL);
74 
75 protected:
77  CpuGLVertexBuffer(int numElements, int numVertices);
78 
80  bool allocate();
81 
82 private:
83  int _numElements;
84  int _numVertices;
85  GLuint _vbo;
86  float *_cpuBuffer;
87  bool _dataDirty;
88 };
89 
90 } // end namespace Osd
91 
92 } // end namespace OPENSUBDIV_VERSION
93 using namespace OPENSUBDIV_VERSION;
94 
95 } // end namespace OpenSubdiv
96 
97 #endif // OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
OpenSubdiv
Definition: error.h:30
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::CpuGLVertexBuffer
CpuGLVertexBuffer(int numElements, int numVertices)
Constructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::~CpuGLVertexBuffer
~CpuGLVertexBuffer()
Destructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::allocate
bool allocate()
Allocates VBO for this buffer. Returns true if success.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::GetNumVertices
int GetNumVertices() const
Returns how many vertices allocated in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::GetNumElements
int GetNumElements() const
Returns how many elements defined in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::BindVBO
GLuint BindVBO(void *deviceContext=NULL)
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::UpdateData
void UpdateData(const float *src, int startVertex, int numVertices, void *deviceContext=NULL)
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::Create
static CpuGLVertexBuffer * Create(int numElements, int numVertices, void *deviceContext=NULL)
Creator. Returns NULL if error.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer
Concrete vertex buffer class for cpu subdivision and OpenGL drawing.
Definition: cpuGLVertexBuffer.h:47
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::BindCpuBuffer
float * BindCpuBuffer()