Texture Issue with Smoke/Fire particles/textures? (looks like little squares)

[Tesityr]

Just wondering what might be causing this odd issue where the textures for Smoke/etc were coming up looking like 'little tiles' of what they should have been.. An example is here:
http://steamcommunity.com/sharedfiles/filedetails/?id=1233168131
They have since stopped, but I'm still wondering what might have caused it to happen, of if it has happened with others, or if it is a Known Issue

Thanks!

[Grobi]

It looks like a mipmap problem to me.

Mipmaps are optimized sequences of textures, which have smaller heights and widths than the original textures. They exist to increase the rendering speed - a far away texture does not need to be shown in its full resolution. Instead it is shown/ rendered in a cheaper mipmap version. Almost every texture in L4D2 (and other games) uses mipmaps. And I believe smoke uses mipmaps too.

If the screenshot is taken from a custom camapaign it is a mipmap problem for sure.
If the screenshot is from Dark Carneval you may have a "better smoke" mod enabled (or something like).

And if you don't have any mods running... well... then I'm afraid I don't have an answer.

[Tesityr]

I don't have and MODs (I usually don't play with them), but thanks for the input guys. Interesting.

I'll try that same level to make sure it's gone. Thanks again.

[Daro Silvertail [PL]]

if you have alt tabbed when map was loading it might be cause of this, alt tabbing also causes common zombies to have black skin

[Tesityr]

Originally posted by SilverLight:

if you have alt tabbed when map was loading it might be cause of this, alt tabbing also causes common zombies to have black skin

BLACK SKIN - yes that's it! With white hair...

That happened at the same time, and I wasn't sure why. I totally might have alt+tabbed, I do it often when I play. Thank you for popping in!