A Very DX11 Game
If there is one point we want you to understand about this game it is that this is a "very DX11" driven game. By that we mean this game uses some advanced DX11 features to exploit the benefits of Microsoft DirectCompute and DirectX 11. AMD had a heavy hand in the development of this game in order to push DX11 graphics features and introduce some of AMD's own technology into the game. While some of these 3D graphical effects are AMD created, these are done under DirectCompute so that these work on both NVIDIA and AMD GPUs. There are no proprietary graphics effects in this game, everything can be rendered equally on NVIDIA or AMD GPUs given the proper DirectX feature level support. Please take note of this NVIDIA! This is how you move gaming forward which betters the entire industry, not just the Green stock price!
Deferred Renderer - This game uses a deferred renderer which allows the dramatic lighting effects in this game. The renderer renders the entire scene in a single-pass and puts all the data in a special G-Buffer. In this way, the lighting can be rendered after the geometry as needed. Lighting layers exist such as the albedo, normal mapping, shininess, and other properties.
Real-Time Radiosity - Via DirectCompute this game uses real-time radiosity. This is exciting because most games use a fake method of light rays by approximation. The developers for this game developed a real-time radiosity lighting engine that bounce the light off objects more precisely. This game is constantly update the radiosity model for the entire scene. All of this is done by DirectCompute so that it works on any DX11 video card.
HDAO - AMD's High Definition Ambient Occlusion is included using DirectCompute. The game does also support standard SSAO. Since HDAO is rendered via DirectCompute any video card can do it.
BC7 Texture Compression - This one is quite exciting. For a long times, and for most games, the type of texture compression used is "DXT" which is a standard in DirectX. DXT isn't perfect though, there is better texture compression out there with less artifacts and errors when compressing the texture which lessens the image quality. DX11 supports a new texture compression method called BC7. This still compresses at the same ratio as DXT but with much less artifacts and errors. This simply means, better performing textures, and better looking textures.
Contact Hardening Shadows - This is another AMD technology, but also using DirectCompute so any video card can do it, NVIDIA or AMD. This technologically basically softens shadow edges depending on the distance of the shadow from the light source. It makes shadows look more realistic.
GPU-Accelerated Particles - This is another new technology which is very exciting for this game, and the industry. Instead of using a proprietary engine like PhysX with NVIDIA GPUs the game developers used DX11's DirectCompute to allow the GPU to accelerate particles on the GPU. By using DirectCompute that means GPU accelerated particles works on NVIDIA and AMD GPUs. The particle effects include fire, smoke, streams and sparks from items in the game.
Silhouette-enhancing Tessellation - Tessellation is not forgotten either in this game. This game adds detail via tessellation based on the distance of objects to the player. The closer the object, the more tessellation it can receive to look better, the farther away, less is needed.
The Bottom Line
Alien: Isolation performs extremely well across a wide swath of GPUs, which many times means the graphics are subpar, but that is not the case here. This game is a showroom of DX11 efficiency; Watch Dogs eat your heart out. We haven't seen the likes of this much attention to detail using DX11 on the PC in a very long time. We hope to see more titles focus on this. Less console-itis please.
We love the use of open technologies based on DirectCompute and the absence of proprietary technologies that make Alien: Isolation truly a great title. Team Green and game devs please take notice of this, as this is what pushes the gaming industry forward as a whole. And that is simply good for all of us.
http://www.hardocp.com/article/2014/11/06/alien_isolation_video_card_performance_review#.VF3nW_msW7s
Everyone's a winner in this title with fantastic performance for all from mid to high end level gpu's regardless the vendor-Kudos to The Creative Assembly and AMD for this highly tuned feature rich non vendor agnostic title.




