void OnDestroy()
{
if (m_Mesh != null)
{
m_Mesh.Release();
m_Mesh = null;
}
}
private bool m_MeshChanged; //标记mesh是否需要重构，将Mesh的重新计算延迟到下一帧
void Awake()
{
RecalculateMatrix();
m_Mesh = new DPProjectorMesh();
m_Mesh.RebuildMesh(m_Projector);
}