public LineRenderer(Shader sh)
{
if (sh == null)
{
throw new ArgumentNullException("shader");
}
_shader = sh;
_vbo = new GLBuffer <LineVertex>(BufferTarget.ArrayBuffer);
_ibo = new GLBuffer <int>(BufferTarget.ElementArrayBuffer);
_vbo.Bind();
_vbo.SetSize(StartingLineCount * linesize, BufferUsageHint.DynamicDraw);
_vbo.Unbind();
_ibo.Bind();
_ibo.SetSize(StartingLineCount * linesize, BufferUsageHint.DynamicDraw);
_ibo.Unbind();
}