Hello and welcome to this weeks Dev Diary!
For the last two weeks, I have been spending time further examining the effects of re-scaling the heightmaps and searching for the optimal size I should aim at first. Since there is no further findings to go into detail for, I can only announce that for my purposes, the 40k heighmap for the 4km2 -area is more than enough, giving an accuracy of 10cm between data-points (or vertices, when talking about 3D models).
I also found out, how long it takes to upscale pictures to 400k size with my current PC specs and that was frustrating to say the least, with over 2 hours waiting time. Conclusion; aiming for 1cm map accuracy was frankly an overkill, to say the least.
One problem still remains, as to how can I combine the land areas effectively in the game engine, without having to join them together manually, one by one? That is one thing, that I'm trying to find out for this week. Here is a filler image from 2 weeks ago, a 5k x 5k portion from the 40k heightmap, with a 100:10:1 subdivide.