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


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.


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:

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