lvfulong
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/**
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@file JCVBOMgr.cpp
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@brief
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@author James
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@version 1.0
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@date 2016_5_18
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*/
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#include "JCVBOManager.h"
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namespace laya
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{
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JCVBOManager::JCVBOManager()
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{
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m_nVBOSize = 10240;
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m_nCurVBOId = 0;
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m_vVBO.resize(20);
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m_bInited = false;
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}
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int JCVBOManager::GetVBO()
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{
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if (!m_bInited)
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{
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int nSize = m_vVBO.size();
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for (int i = 0; i < nSize; i++)
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{
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m_vVBO[i] = createVertexBuffer(m_nVBOSize);
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}
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m_bInited = true;
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}
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int vbo = m_vVBO[m_nCurVBOId];
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m_nCurVBOId++;
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if (m_vVBO.size())
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{
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m_nCurVBOId %= m_vVBO.size();
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}
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else
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{
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m_nCurVBOId = 0;
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}
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return vbo;
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}
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void JCVBOManager::freeGLResource()
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{
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int nSize = m_vVBO.size();
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glDeleteBuffers(nSize, (const GLuint*)&m_vVBO[0]);
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m_bInited = false;
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}
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void JCVBOManager::ReleaseVBO()
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{
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m_bInited = false;
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m_nCurVBOId = 0;
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}
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unsigned int JCVBOManager::createVertexBuffer( int totalSize )
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{
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unsigned int vbo = 0;
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glGenBuffers(1, &vbo);
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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glBufferData(GL_ARRAY_BUFFER,totalSize,0,GL_DYNAMIC_DRAW);
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return vbo;
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}
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}
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//------------------------------------------------------------------------------
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//-----------------------------END FILE--------------------------------
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