"The Witcher" is powered by a new version of the BioWare Aurora Engine(TM), modified for a single-player experience. A number of changes have been introduced to the original BioWare Aurora Engine(TM), and some of them are described below.
World visualization
One of the most important of which is modification to the world-visualization method. In BioWare Aurora Engine(TM), the world is designed exactly as it was envisioned, rather than utilizing a tile-based system. Because of this, the visuals are unique and rich in detail. All the environments are created in 3D Studio Max 6.0, and then exported into the game engine.
Lightmaps
Our version of the engine supports lightmaps, generated in 3DS Max. Shadows generated this way look more realistic and are better performance-wise.
Texture paint
This is a special tool that enables us to paint the environment using custom textures, which saves a lot of time and looks more natural than ordinary mapping.
Skybox and water effects
We have added new realistic skybox and water effects to the engine.
Rendering
All the in game and toolset rendering is done using DirectX9, and the engine supports now plenty of different shaders (water effect, bump mapping, environment mapping, etc). Additionally the whole rendering system has been unified and a new light manager was added.
Other changes
Other important changes include the following: motion-captured animation, physics effects, new mechanics and combat system. There are also many other modifications, like introduction of portals, additional graphical effects (glows, advanced dynamic shadows, blurs), and will describe them in detail later.