Directx is the core which makes the games work.All the graphics designs which you even cant imagine in real time, is possible due to it.When Microsoft launched its operating system in 95 it was quite unfriendly do ue to internal restriction on hardware like audio device video cards and other peripherals.Thus directx made a set of api or functions that can be used in windows.The main advantge was taken by games which had much more freedom
How DX10 makes it so real ?
- In real world every point is uinque.Even 2 points on your face is not similar.When Dx stared initially due to restriction on hardware and development part it was restricted on number of unique objects that can show in Scene.But with DX10 you can show hundreds of unique objects.This means if you have to show 100 flowers in a field you need not to create one and copy it to 100 but create 100 different one.That makes it more real.
- Displacement Mappings one more technique that makes Humans showing in most of the hi-fi video games so real.More details texture you have much real the image will look.DX10 has something called as geometry shaders.By adding more “triangles” in a particular point it makes them real.
Now think of those graphics u see on your vista’s desktop.Thats what DX10 making it happen
Comparison of DX 9.0 and DX 10
Lets take a look at the images below and You will need no words to say how much they differ:
Above: Image Generated By DX9
Above: Image Generated By DX10
Can it make my CPU slow and system crash.?
It can if you don’t have a separate Graphics card.The gae has gone when the cpu had to all the work.If you have a separate graphics card DX10 will transfer the load on to it while your cpu can still do other things like downloading email checking and browsing.
You can read these topics for DirectX 9L which is going to be DirectX10 for windows XP.I found it through google search DirectX 9.L will be a DirectX 10 for Windows XP
So what does all that mean ?
Over all as the end user you might be more concerned about your system performance.Thus u want to play hi-fi games without ur system crashing down or getting ur screen blank.Keepin this in mind the benefits of DX10 with Windows Vista you might be compelled to upgrade seeing these advantages, specially as a gamer u will.
