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Unreal 4.24 Blueprint Landscape Brushes are 8 bit for some reason?

Hi,

Having tested Unreal 4.24’s new landscape brushes it would seem that the render targets used to apply the height map to the landscape are in RGBA 8 bit format which causes stepping in the application of those height maps if the height is raised too much. I don’t know why the format is not 16 bit to allow for a much higher range in the gradient stepping between 0 and 1.

Here is a shot of the problem:

The format is defined in the Landcape Brush Manager blueprint which is part of the Landmass plugin:

I have tried duplicating this blueprint then changing the format to RGBA16f in my own version and using that blueprint within a landscape blueprint brush of my own but it will not then render to the height map render target and thus will not apply it to the landscape with a smooth transition.

Any thoughts on this issue would be welcomed.

Thanks.

Maybe moving it to the Rendering section would be a good idea…? I also noticed that and I wonder if that’s intentional or some kind of limitation of current design.

I met the same issue:

You can notice that the height map is really noisy:
heightmap.png
result:
shot.jpg

Any update on this issue ? Or any advice? Thanks.

I Know this is old but I had the same problem when I reduced the size of my height map. try doubling the height map size in Photoshop then redoing it. my height map was 8k and came in perfectly. I rediced it to 4K and I got the exact same as you guys are showing