» Fri Jun 03, 2011 2:13 am
There is a significant difference (in visuals). One of the most obvious differences, is that you know how sometimes circles are rendered as octagons or decagons? Well with tessellation, the circles are actually rendered as real circles - basically because the gpu takes the limit of the polygon equation as the number of sides goes to infinity and renders that integral. It uses a good amount of higher math which is why it's so demanding.
Also, not many people know, DX10 cards are capable of tessellation and have built in hardware tessellators. The reason DX11 is touting this whole tessellation thing is because the programming interface used to access these tessellation abilities was made much simpler.