Test images – Hi Fidelity Terrain

Continuing on the discussion earlier about using a custom elevation model, I threw together a couple of tiles quickly based on data from http://www.eorc.jaxa.jp. Their data is available for use with attribution – so that’s LINZ and JAXA.

Firstly, it only took a minute. Way less effort than I thought it would.

I’m happy with the results. There seems to be something a bit off in Milford, the ortho is a bit weird with shadows, like it’s off position for some of the ridge lines. That’s nothing to do with the custom DEM. But the added fidelity lets the engine add much more subtle lighting and shadow changes. X-Plane looks MUCH better in the morning and afternoon and evening. Hopefully they’ll sort out the mid day sun in the future.

Here’s a couple of test images using a custom terrain mesh. I’m going to call this the High Fidelity Terrain because fidelity pretty accurately describes the fact that the terrain mesh is being replicated to a finer degree, in the same way HiFi music does. Think of a music files bitrate. Hopefully that will make sense to people when comparing the resolution of the Ortho photos and the fidelity of the terrain.

Milford Sound

Milford Sound 30m DEM.JPG

Fiordland

Fiordland 30m DEM.JPG

You can see the high res images here.

Take a quick look and feel free to comment and let me know whether you think the it’s worth it. As far as I can tell the effort and size difference is trivial, and I did a quick check and was getting 70-80 FPS in the Milford Sound image. The 8m DEM from LINZ might be better but for a flight sim I think this is great.



Categories: Flight Simulation

2 replies

  1. Yup easy and DRAMATIC difference!

  2. Looking very good!

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