Post news RSS A bit on displacement maps

On some objects in the game, for example the foundations of both the Stone Bridge and the church (on the Medium French Village map), we make use of a shader technology called displacement mapping.

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By Reto.Dave, Environment/Props/Concept Artist

intropic

Displacement mapping is a technique for adding geometric detail to the mesh the shader is applied to.

Compared to with normal maps, which works by just altering the surface normal to fake the amount of detail in the mesh detail, displacement mapping alters the mesh itself.

I’ve made some examples that i hope can show you how displacement mapping works and looks with a normal map and a diffuse map.

For this example I’ve used the texture maps from the Stone Bridge in “Medium french Village” more precisely from the foundation of the bridge.


These are the images we use, they have all been drawn in Photoshop, but could just as well have been renderdt from a high-poly object. Rendering maps from high-poly objects gives the best and most accurate result, but it takes more time to model a high-poly object to render from, than it does to draw grey-scale normal or displacement map in Photoshop, but if time is on your side highpoly objects is preferred, if time is not so much on your side drawing them in Photoshop will do fine ;)

Diffuse map
This is the map that defines the surface main color look.

Normal map
This is used to faking the lightning of bumps, dents, scratces and so on without added more polygons.

Displacement map
This is the map we use to for the displacement mapping, where black represents the absolute lowest and white represents the highest point. It adds a lot of details to the conture of the object.

textures2

Last but not least a ‘DirectX 11′-only feature we also use, called Tesselation which adds more polygons to an object the closer you get to it.

If you want to know more about tesselation, Nvidia has published an article about it here: Nvidia.com

Over and out!
Reto.dave

Sign up for an Alpha-key here!

(Heroes & Generals blog link)

Comments
Starkiller2356
Starkiller2356 - - 430 comments

So this means that DX11 will be in this game! Awesome!

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Sam1209
Sam1209 - - 414 comments

That's the most Tess I'v ever seen in any game, even in large brand "DX 11" labeled games..

Awesome.

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R3bornSh4dow
R3bornSh4dow - - 230 comments

That's because a lot of company's just throw Dx11 in and say: "Here you go folks, we are to lazy and money hungry to give you a fully implemented Dx11."
Stupid greedy AAA companys.. only focusing on consoles and on milking the **** out of people.
__________________________
Anways, this is awesome!

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Baryonyx
Baryonyx - - 270 comments

Your right, many cross platform games, mostly so called AAA titles, end up working to the lowest common denominator, which are the consoles.

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1US_Shermanator-87
1US_Shermanator-87 - - 313 comments

I dont understand...at all...lol but im sure its awesome! WHOO!

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