OpenGL ES为什么我的纹理旋转180度？

gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, _vertexBuffer);

gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, _textureBuffer);

gl.glDrawArrays(GL10.GL_TRIANGLES, 0, _vertexBuffer.capacity()/3);

new float[] {
    0, 0, 0,
    0, height, 0,
    width, height, 0,
    width, height, 0,
    width, 0, 0,
    0, 0, 0
};

new float[] {
    0, 0,
    0, 1,
    1, 1,
    1, 1,
    1, 0, 
    0, 0
}