public void Render(SharpGL.OpenGL gl, SharpGL.SceneGraph.Core.RenderMode renderMode)
{
// update matrix and bind shader program
mat4 projectionMatrix = camera.GetProjectionMat4();
mat4 viewMatrix = camera.GetViewMat4();
mat4 modelMatrix = glm.scale(mat4.identity(), new vec3(1, 1, this.ZAxisScale));
shaderProgram.Bind(gl);
shaderProgram.SetUniformMatrix4(gl, strprojectionMatrix, projectionMatrix.to_array());
shaderProgram.SetUniformMatrix4(gl, strviewMatrix, viewMatrix.to_array());
shaderProgram.SetUniformMatrix4(gl, strmodelMatrix, modelMatrix.to_array());
gl.BindVertexArray(vao[0]);
// 启用Primitive restart
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);// 截断图元（四边形带、三角形带等）的索引值。
//GL.DrawArrays(primitiveMode, 0, vertexCount);
gl.DrawElements((uint)primitiveMode, vertexCount + (this.pipe.Count - 1) * 2, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
// unbind shader program
shaderProgram.Unbind(gl);
}
