I have a problem with the Landscape Height blending system in UE 4.15.1
I have a landscape (obviously)
And I was following the video tutorial at: https://www.youtube.com/watch?v=NAJhppttJgI to create a material for it
But then I got stopped when trying to use the LandscapeLayerBlend node: I was trying to setup an Height Blend layer on top of my default Weight blend layer, but when I paint this layer, it seems to behave just like a regular weight blended layer (Height map input not modulating the blending ?? )
So I tried to simplify the setup, and replaced my height blended layer with a simple red color, and a constant height of 0.0.
According to the documentation (from the page https://docs.unrealengine.com/latest/INT/Engine/Rendering/Materials/ExpressionReference/Landscape/index.html?utm_source=editor&utm_medium=docs&utm_campaign=rightclick_matnode#landscapelayerblend):
“LB_HeightBlend works by modulating the blend factor, or weight, for the layer using the specified height value. When you have multiple layers painted on an area and they all are set to LB_HeightBlend, it is possible that all the layers painted in a particular area will simultaneously have a 0 height value, so the desired blend factor for each layer becomes 0. Because there is no implicit or explicit ordering, the result will be black spots because no layers will have any contribution to that area.”
=> So, since I use a constant height value of 0.0, I would expect to get a blend factor of 0, correct ? So I should not see my red layer at all when I try to paint it. But this is not what I observe, as shown on the images below, so I’m completely confused :
Any explanation on what I could be doing wrong ??
Thanks for your help !!