protected: void Trace ( FHitResult & OutHit, const FVector & Location ) const public : UFUNCTION ( BlueprintCallable, Category = 'Character' ) void FootDown ( const UArrowComponent * FootArrow ) const We start by adding a foot down function to our third person character which will get called instead of our current blueprint function. This might not really be necessary in this case but the point is to get a feel for the workflow for future projects. The blueprint prototype is working properly, everything looks good, we can now go ahead and port some of the functionality to C++. The fade out works by manipulating a fade parameter in the decal material. Using these values we can then slowly fade out the actor before removing it completely. The tessellation shading unit gets as an input an arbitrary mesh (like a quad, triangle, line.) and can subdivide it dynamically into. Texture Set Vol.4 Stone - Tessellation handpainted gamedev indiedev texture ground handpaintedtexture lowlypoly assets unreal unrealmarket. In the graph of this blueprint we define a life time and fade out time. Tessellation in general terms is just subdividing a given geometry into multiple chunks (Usually triangles) What you reference to is the tessellation shading stage introduced in Direct X11 and OpenGL 4. We can do this by creating a new blueprint that inherits from DecalActor. It would be great if the decals could handle their lifetime themselves and get deleted automatically. We still have a problem: our decals never go away. I guess tessellation for certain ground types like sand and snow might in fact be the ideal solution and I definitely want to come back to this topic at some point in time. In this video, I look at the current state of UE5 Landscape Displacement, mourn the loss of tessellation in UE4 and struggle with the complexities of Virtual. They used additional detail height maps that reacted to players foot prints on top of the terrain ( source). The only crack-free tessellation displacement solution for Unitys HDRP (as of mid 2020) Asset Store Link. The game Journey has a great sand simulation where you can slide down hills and leave a trail behind. Production-Grade, Performant Crack-Free Tessellation Displacement Shader for Unity s HDRP.

It might be possible to mitigate the effect through some blending technique, however a more interesting approach might be to use an additional height map. A big problem when using this decal method is overlapping footprints.

Tessellation ue4