Well, they have made a texture from a satellite photo and mapped that texture to a custom ground polygon made in a program like GMax. Search YouTube for "Ground Polygon" and you will probably come up with some things.
I fumble with GMax too much and have instead opted for a realistic, but non-photo approach.
I turned off all markings and lights from the runway making it somewhat invisible (you still see the tarmac) and hide it to get it out of the way.
Then I covered it up with an apron made of the material I wanted the runway to be for a hard surface. Notice the runway is asphalt mainly with a patch of concrete running down the middle. You cannot overlap aprons without issues, so I had to "make a hole" where the concrete apron will be placed.
I hid the tarmac once I had it how I wanted, then traced all the markings with a GP Polygon (the purple blob with a G on it)
When you double click the last point on a custom Ground Poly, it will ask you what texture you want. I'm using the standard gp_White_20F/gp_Yellow_20F/gp_Red_20F for the main texture and all my markings have a black border around them, so I've found a .5ft border with the gp_LineBase texture to be a good fit for what it looks like.
The biggest downside is that with the GP object, you don't get scuff marks and wear and tear. It looks like the runway was just made, so you'll have to make a texture for the wear marks, get it added to the ADE texture list for the Ground polys and then apply the texture to a rectangular GP that will lay on top of the rest of the items. In that texture, you'll need the background to be transparent with the marks only. Haven't gotten that far with the runway yet, but it looks better than the default runway.
I'm also using AFLT to create the 3D lights for the touchdown zone, displaced threshold, approach lighting and runway edge and centerline lights. That is a bit more than I can go into for making the light library in AFLT that you'll use, but performance with default airport is about 80FPS on my design computer and down to 40fps with the AFLT lights (300-500 taxiway lights and the runway is about half done), so performance suffers a bit with the AFLT lights, but the hit worth it for me. Taxiing around with the floating orbs just doesn't do it for me anymore.
So here is the current result in FSX...the redline running down the center of the runway was just for placement of the centerline lights to keep them straight. I will delete that line once placement of the lights is complete.
