Hello! New here, but definitely not to mapping. I’ve been mapping for over a decade at this point. I recently returned to Source engine after a long time in UE and it’s been well…challenging. One of the issues I’m facing is with Lightmapped4way materials for displacements. There’s this strange error where, if a displacement is viewed at a certain angle, the fourth texture (ALWAYS the fourth) gets very dark, and turns either brown or a muddy blue. There also looks to be some other texture mapped onto it, I sometimes see striations. I’ve checked the .vmt and couldn’t find anything off about it.
Hey there, I recreated the .vmt using VMT Editor 1.3.9 but the issue persists. I think what I will do as a workaround is to simply use the first three textures and disregard the fourth, blending between three textures is better than just two, I suppose. If I ever find a solution I’ll be sure to post it here.