cpuGLVertexBuffer.h
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//
// Copyright 2013 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
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#ifndef OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
#define OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
#include "../version.h"
#include <cstddef>
#include "../osd/opengl.h"
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
namespace Osd {
class CpuGLVertexBuffer {
public:
static CpuGLVertexBuffer * Create(int numElements, int numVertices,
void *deviceContext = NULL);
~CpuGLVertexBuffer();
void UpdateData(const float *src, int startVertex, int numVertices,
void *deviceContext = NULL);
int GetNumElements() const;
int GetNumVertices() const;
float * BindCpuBuffer();
GLuint BindVBO(void *deviceContext = NULL);
protected:
CpuGLVertexBuffer(int numElements, int numVertices);
bool allocate();
private:
int _numElements;
int _numVertices;
GLuint _vbo;
float *_cpuBuffer;
bool _dataDirty;
};
} // end namespace Osd
} // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;
} // end namespace OpenSubdiv
#endif // OPENSUBDIV3_OSD_CPU_GL_VERTEX_BUFFER_H
OpenSubdiv
Definition: limits.h:32
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer
Concrete vertex buffer class for cpu subdivision and OpenGL drawing.
Definition: cpuGLVertexBuffer.h:47
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::CpuGLVertexBuffer
CpuGLVertexBuffer(int numElements, int numVertices)
Constructor.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::BindVBO
GLuint BindVBO(void *deviceContext=NULL)
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::GetNumElements
int GetNumElements() const
Returns how many elements defined in this vertex buffer.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::UpdateData
void UpdateData(const float *src, int startVertex, int numVertices, void *deviceContext=NULL)
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::GetNumVertices
int GetNumVertices() const
Returns how many vertices allocated in this vertex buffer.
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::allocate
bool allocate()
Allocates VBO for this buffer. Returns true if success.
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::BindCpuBuffer
float * BindCpuBuffer()
OpenSubdiv::OPENSUBDIV_VERSION::Osd::CpuGLVertexBuffer::~CpuGLVertexBuffer
~CpuGLVertexBuffer()
Destructor.