omni::visual::VBO Struct Reference

A small Vertex Buffer Object class. More...

#include <VBO.h>

Public Member Functions
	VBO ()
	~VBO ()
	Destructor. Frees VBO if necessary. More...
void	gen ()
	Generate a new VBO and get the associated ID. More...
void	freeAndGen ()
	Free the existing buffer generates a new one. More...
template<typename BUF >
void	bufferStaticArray (BUF const &_buf)
	Copy static vertex array onto GPU. More...
template<typename BUF >
void	bufferStaticElementArray (BUF const &_buf)
	Copy static index array onto GPU. More...
void	free ()
	Free VBO via glDeleteBuffers. More...
GLuint	id () const
	Return buffer id. More...

Private Attributes
GLuint	id_ = 0

Detailed Description

A small Vertex Buffer Object class.

Constructor & Destructor Documentation

omni::visual::VBO::VBO

(

)

    {
      gen();
    }

omni::visual::VBO::~VBO

(

)

Destructor. Frees VBO if necessary.

    {
      free();
    }

Member Function Documentation

template<typename BUF >

void omni::visual::VBO::bufferStaticArray ( BUF const &  _buf )

inline

Copy static vertex array onto GPU.

                                              {
        withCurrentContext([&](QOpenGLFunctions& _) {
          _.glBindBuffer(GL_ARRAY_BUFFER, id());
          {
            _.glBufferData(GL_ARRAY_BUFFER,
                           _buf.size() * sizeof(typename BUF::value_type),
                           _buf.data(),
                           GL_STATIC_DRAW);
          }
          _.glBindBuffer(GL_ARRAY_BUFFER, 0);
        });
      }

template<typename BUF >

void omni::visual::VBO::bufferStaticElementArray ( BUF const &  _buf )

inline

Copy static index array onto GPU.

                                                     {
        withCurrentContext([&](QOpenGLFunctions& _) {
          _.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, id());
          {
            _.glBufferData(GL_ELEMENT_ARRAY_BUFFER,
                           _buf.size() * sizeof(typename BUF::value_type),
                           _buf.data(),
                           GL_STATIC_DRAW);
          }
          _.glBindBuffer(GL_ARRAY_BUFFER, 0);
        });
      }

void omni::visual::VBO::free

(

)

Free VBO via glDeleteBuffers.

    {
      withCurrentContext([this](QOpenGLFunctions& _)
      {
        if (id_)
          _.glDeleteBuffers(1,&id_);
      });
    }

void omni::visual::VBO::freeAndGen

(

)

Free the existing buffer generates a new one.

    {
      withCurrentContext([this](QOpenGLFunctions& _)
      {
        if (id_) free();
        _.glGenBuffers(1,&id_);
      });
    }

void omni::visual::VBO::gen

(

)

Generate a new VBO and get the associated ID.

    {
      withCurrentContext([this](QOpenGLFunctions& _)
      {
        if (!id_)
          _.glGenBuffers(1, &id_);
      });
    }

GLuint omni::visual::VBO::id

(

)

const

Return buffer id.

    {
      return id_;
    }

Field Documentation

GLuint omni::visual::VBO::id_ = 0

private

---

The documentation for this struct was generated from the following files:

• include/omni/visual/VBO.h
• src/lib/visual/VBO.cpp