Landscape (splatmap / weightmaps)

Development Rendering
1

Hello,

I’m using a exsisting landscape material, but i would like to inplement splatmaps/weightmaps.

Is this something you would do in the material editor using a Layerblend then changing the
blendtype to LB height and then use your splatmap with R}G}B}A channels of splat?

or can you use / import your grayscale splat using LayerInfo setting it to WeightBlendedLayer?

What works best for this?

Thanks

decor

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2

Both ways are possible.

Advatanges of importing 4 greyscale weightmaps into respective weight-blended layers over using splatmap RGBA texture are as follows:

  • You can specify physical surfaces separately for each layer
  • You can paint layers inside UE4
  • Landscape system automatically improves performance by skipping layers, that are not present on a part of landscape.

Advantages of using 4 channel splatmat:

  • You can sample it with offset(It is need for several more advanced effects, like Parallax Occlusion Mapping)