Not being a content creator, can someone provide some info on normal mapping vs whatever was used before? Is this related to the diffuse, reflect and refract texture types? How can I know if a downloaded asset's textures are normal mapped?
Bob
Basically there are three ways to simulate a bump, one is straight adding polys, this puts a load on the cpu as well as the video card, second is bump mapping modern video cards can cope with this without bugging the cpu. This is texture not mesh and typically you might expect recent Paul Hobbs items to use this, basically you need some one who is fairly knowledgable in content creation. Currently none of my items use this. The third is normal mapping where the video card does the work. The most common variant takes two .tga files one with the image and sort of blue / purple one with whether to out or indent.
You need Blender or 3DS to do this. Look under Vinnybarb trs2009 buildings such as
KUID2: 184151:9416:3 then search again for his none normal mapped versions to see the difference.
KUID2: 86627:2362:1 is also normal mapped and there is a none normal mapped version around. Whitepass has one normal mapped wagon on Trainzpro routes.
Basically your video card can do the normal mapping without blinking so more detail with less effort. Its sort of revolutionary but technically it has been possible for some time.
I think you can do bump mapping and normal mapping at the same time. Currently I'm playing, an American called Rick worked out how to get them out of Blender, John in the UK is playing with photoshop addins to get them into Blender.
So far I created a normal mapped wagon that works in TC3 as well as TRS2009 but we are at the experimental stage at the moment. Which isn't being helped timewise by my copy of TRS2009 deciding it wants to rebuild its database. If we get it right then we should be able to get 100 or so normal mapped wagons on the DRS fairly quickly.
However it begs the question how does some one know if an item is normal mapped or not and vinnybarb's answer
"I guess by d/loading and looking at them in the game or by editing them to see if normal maps have been included :hehe: " currently is probably the only way to find out. Even then you have to inspect the .tga files to be certain.
If you are thinking of purchasing payware it's probably worth asking if it uses normal mapping before hand.
Cheerio John