Microsoft Windows 7 is built on Windows Vista, and offers as such a long series of changes and improvements using the existing OS. While much progress is significant but may be considered “minor”, others are underground and have much more important. This is the case with DirectX.
If you want to use DirectX 10 game, you need a compatible graphics card. If it is DirectX 9, the game will not work. In contrast, of course, a graphics card DirectX 10 runs DirectX 9 games without problem. The operation of DirectX 10 is exclusive, but the situation will change in Windows 7. The different versions of the API Microsoft will in fact represent levels in DirectX 11. It found that:
- DirectX 9
- DirectX 10
- DirectX 10.1
All these versions are united in DirectX 11. But does this mean that a DirectX 9 card will run DirectX 10 game? The answer is yes!
But is this really the magic solution that everybody expected? Here, it is clear that not. A DirectX 10 graphics card can do things that cannot make a DirectX 9 graphic card. When you launch a DirectX 10 game for Windows 7, this graphics card will be sought. If a card is DirectX 9, the game will function normally and make the same graphics card if DirectX 10 was present.
This operation is called by Microsoft “Direct3D 10Level9.” It is part of an result of the functioning softening Direct3D in DirectX 11, because ultimately the most surprising is that Thursday DirectX 10 might engage in any conditions … even if no graphics card is present .
This particular method is called “Direct3D WARP10. In this case, all calculations are performed by the CPU. As surprisingly, the performances are not good. They will be quite catastrophic when compared with a real graphics card. The two tables below show the results with a CPU and a graphics card:
Everything is finally joined in DirectX 11, but it is very important to note that DirectX 9 will no longer exist as such because if you have followed, you will have noticed that passed through DirectX 10, hence the term “10Level9.” DirectX 10 becomes the new foundation of Windows 7, and Microsoft has modified the operation so that the DirectX 9 graphics cards will work. If this change is likely to be transparent to the user interface, players are warned in advance that they necessarily find less good performance in games that demand a true DirectX 10 card to give their full potential.
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