Mark,
The problem with letting people choose brick size is that there is no brick that will fit as the mortar width is variable too, so I think choosing how many across and how many up and let the computer sort out the actual size.
All the colours (mortar and brick) are variable so you can pick whatever suits your own personal style!
The light/shadow is still there, it's just subtle, you can see that the left and top edges of bricks are highlighted.
You can adjust the light intensity I've got it at around .5 or .75 on those example, as soon as you go above 1 it starts to look like everything is plastic coated which generally is the bump map 'look'. I've spent a lot of time looking at bricks recently and generally they are very matt and highlighting/shadowing is subtle.
As I said though, the intensity is variable so you can choose how extreme you actually want the lighting on the bricks.
Likewise with the mortar and brick depth, these are both variable which again makes a difference to how much of an edge there is to highlight. Often with real walls you'll notice that the mortar is actually a very similar depth to the bricks. Only modern stylised walls have mortar that is actually set back from the bricks.
The problem with letting people choose brick size is that there is no brick that will fit as the mortar width is variable too, so I think choosing how many across and how many up and let the computer sort out the actual size.
All the colours (mortar and brick) are variable so you can pick whatever suits your own personal style!
The light/shadow is still there, it's just subtle, you can see that the left and top edges of bricks are highlighted.
You can adjust the light intensity I've got it at around .5 or .75 on those example, as soon as you go above 1 it starts to look like everything is plastic coated which generally is the bump map 'look'. I've spent a lot of time looking at bricks recently and generally they are very matt and highlighting/shadowing is subtle.
As I said though, the intensity is variable so you can choose how extreme you actually want the lighting on the bricks.
Likewise with the mortar and brick depth, these are both variable which again makes a difference to how much of an edge there is to highlight. Often with real walls you'll notice that the mortar is actually a very similar depth to the bricks. Only modern stylised walls have mortar that is actually set back from the bricks.