DirectX 9 vs. DirectX 10

During a related event to DirectX in London, Richard Huddy, head of relations of developer of software presented that Windows Vista will integrate the API´s of 9 DirectX and DirectX 10 but that nevertheless, Windows XP will not have support for this last one.

In English, this means that Microsoft wants that you change yourself as rapidly as possible to Windows Vista and continues looking for ways of to help you to do it, even if this implies to bother to the users being cut support and compatibilities in Windows XP. This would specially affect gamers that if wants to enjoy the games that begin to leave and that take advantage of the advantages this new version of DirectX will have to do it in Windows Vista. Here few examples of DirectX 10 against DirectX 9 and tell us what do you think, is it worth that to buy Vista or not ?

Microsoft Flight Simulator X with DirectX 9

Microsoft Flight Simulator X with DirectX 10

Far Cry with Direct X 10

One of the most promising and fruitful fields of the market is the videogames. Microsoft knowledgeable of this demonstrates was worth it of Vista in this field, good proof of it is their graphical capacities and the services online that will come shortly. Let us see it at great length.

The rendering process will also count on important improvements in DirectX 10. In this new version we found a unification of shaders that we know from the version Direct3D 8.0. Until now, the graphical cards counted on two main components at the time of managing the objects: Vertex Shader and Pi­xel Shader. According to this, for the creation of an object the treatment to later follow raisin first by the Vertex Shader and by the Shader Pixel in the way the rendering of the object.

By the way, each point is worked as far as a series of factors (for example the texture and the light) until finally is the object in its renderization final form.Until now, as much the number of Shader Pixel as the one of Vertex Shader comes taxes in graphical cards from the hand of the developers. This implies that it works under pipeline fixed; the bad thing is that this factor is handicap that not always is optimal. The most evident situation takes place vice versa when we need many Pixel Shader but few Vertex, or. In these cases resources are failed to take advantage of since, while they are saturated of service load, the others do not lend any type of aid to alleviate the task.

DirectX 10 unifies the Shaders so that it does not specialize units for a process or another one. In this way, the execution unit adapts to the precise necessities of work instead of following pipeline fixed. Version 10 of DirectX also adds a new denominated unit Geometry Shader. This one element, whose execution in pipeline is located between the Vertex Shader and the Shader Pixel, will allow modifying the geometric forms sent by the Vertex (basically triangles) to create more complex elements from them. Some of the graphical improvements that this new Shader unit will suppose will appreciate specially in elements like the physical grass, particles, the volumetric effects (clouds, smoke) or the hair of the personages.

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