Does DirectX change anything visually?

[shioriharu]

So i was recently forced to install DirectX SDK by a game, even though i already had DX 11.
Im on windows 8.1
Probably a stupid question but i have to make sure, does DirectX change any visual portion, or the speed at which you are scrolling?

 

[RARRAF]

No not as far as I know its program code that makes games run different games require different programs to run nothing to do with display

 

[mamasan2000]

If Win 8.1 is like Win 7, it doesn't come with DX 9. Some games require DX 9.
I couldn't tell you what the difference is between DX9/10/11 but it's only relevant in games. There is a difference visually though. Also performance-wise.

 

[shioriharu]

This particular game was on my PC for years, and it should use latest directx 11.
However one time it randomly stopped working so i uninstalled and i had to reinstall today.
This time however it forced me to install a vcredist package (2005) and a DirectX SDK, i didnt feel right about this so i denied it at first, but that way it doesnt install, and my friends were demanding me to play with them
(this game is called League of Legends)

After the installation i immediately seemed to perceive screen-scrolling being slowed down and blurry image quality, but i didnt know if it was my imagination or its actually a thing.

I went to search for Directx on my PC to see when it was last modified, and it says 2015., however there was an empty folder called DirectX Setup, which was modified today.

So i dont know if what im saying is possible even, im rather paranoid with every software im installing lately.

 

[viewtyjoe]

It's pretty common for games running on DX9 to come with the specific build of DX9 they were intended to run with because there were many incremental improvements throughout the life of the API, and it was very common that users wouldn't have the most up to date version when a new game came out.

It also reduces compatibility issues since you know your game will install the right version of the API where you know you can access it. I don't see this as much with newer games, but for the longest time, every installation of a game involved installing their specific build of DX9 as well.

 

[shioriharu]

Well my question in a nutshell, can DirectX SDK overwrite anything of the newer DirectX files by accident?

 

[rgd1101]

No it doesn't change other directX version.

 

[shioriharu]

So let me get this traight. If i had Directx 11 and i installed unknown version of DirectX SDK today, that has no effect on my pc (performance or visuals) at all ?

 

[rgd1101]

What do you mean unknown version of directX sdk? why do you need the SDK? sdks is for development only.

 

[shioriharu]

I don't need it, but this game forced me to install Directx SDK, and i dont know exactly how does this affect my Directx 11, if at all.
I read up on it of course but didnt find anything specific.

I am paranoid cause i had my nvidia driver get corrupted previously, and it caused overheating until someone here at toms hardware finally pointed out the problem and i was able to solve it.

I just want to avoid any similar accidents

 

[rgd1101]

What is the name of the game? where did you get it?

 

[shioriharu]

It's called League of Legends, from www.leagueoflegends.com

 

[shioriharu]

Here's a link where someone points out the problem

http://forums.euw.leagueoflegends.com/board/showthread.php?t=47160

But gets no response.
So what's the deal with SDK, does it clash with your original Directx or its completely different and just some games use it to work?

Nevermind guys, thanks for responses, i got a satisfying answer elsewhere.