[Solved] Mesh decals clipping near camera

[CupMcCakers]

Thank you for the replies

@Deathrey

You can check if the vertex is at or behind near clipping plane. If so, move it, so it is in front of clipping plane using WPO , leaving rest of your material calculations use unmodified WPO positions.
Hacky and dirty, but reliable.

Good thing I love dirty hacks

I don’t think it is a clipping plane issue unless there is something that I have misunderstood about mesh decals. The clipping occurred along the bottom of the screen, no matter the viewing distance. This could come in handy though, thanks.

@Chosker

actually I was trying to check if the OP’s material was using WorldSpace-mapped UVs for the spline. I’ve been trying on and off to re-project the original spline UV’s similar to WorldPositionBehindTranslucency so that I can keep the directionality of the decal UVs (i.e. to have the texture ‘follow’ the spline) but the answer eludes me

​​I am using worldspace-mapped Uvs, although re-projecting Uv’s sounds like it could be useful for certain things like road markings, I haven’t tried that yet, I was just planning to overlay more meshes/decals for those.

Here is the material currently.

I use terrain height data to map the spline somewhat correctly, but it is not always perfect, so I use vertex painting to weight the alignment to the terrain, and since the mesh is offset from the ground by default, this allows me to trade off close alignment for a better projection sometimes, although it’s not perfect.