Here's my texture I've picked up on http://www.texturemate.com/
Liked the colours and details. Let's make a Doom texture out of it! We can use the full texture, it doesn't need croping. 3888x2592 is a bit too much for our needs so let's scale it down.
I've highlighted the resampling droplist. Here are the results:
Whoever scaled down photo textures for use in oldschool stuff like Duke/Doom/whatever, probably tried using this resampling method since.. it's not doing any resampling. While it should work in theory, with things looking nice and pixelly, the end result is just too rough and details start to look like noise.
Bicubic. Oooh, smooth. Too smooth. Almost being blurry It's like the opposite of the above result - instead of being noisy it's blurry.
Bicubic sharper. OH GOD PLEASE NO. The result looks like the above bicubic result but with ugly SHARPEN filter aplied. NO.
Bilinear. It's - it's smooth while a bit better at preserving the details than bicubic. I think it's the best solution for scaling down textures to oldschool sizes While you're difference may be subtle for you, non-graphic-nerds, it just feels right in my opinion.
After making it tileable and some tablet and brush tool voodoo you can get something like this:
Cheers and hope this helps in anyway.
ETTiNGRiNDER wrote:Just did a quick poke around with GIMP, which, disregarding "None", has "Linear" "Cubic" and "Sinc". Sinc appeared to have the best effect, but oddly, Linear and Cubic seemed to have reversed effects from what you had with Photoshop (Linear was the blurry one and Cubic was better looking).