At any angle other than 90-degrees, the shade cloth with block more sunlight, due to the thickness of the web occluding the openings. However, as they are relatively thin, it won’t be much.
Think of vertical window blinds as an example of a very thick shade cloth. From straight on, you can clearly see through it, but as you move to the side, the observable gaps get smaller and smaller, with the slats eventually completely blocking your view.