Fallout 3 – Edges (GAT #1)

Markdown901 B 原始文件

Source: https://simonschreibt.de/gat/fallout-3-edges/ Author: Simon Schreibt. Captured 2026-10-16.

Observation

Broken stone looks high-poly from front; side view shows low poly.
Smooth stone + broken-edge textures; normal-mapped “holes” soften hard transition.

Decals / geometry

Early suspicion of extra geometry wrapped around edges (CryEngine-style edge detail).
Intel GPA: disabling alpha test reveals extra decal planes.
NifSkope comments: wrapped decal geometry slightly larger than solid edges—same idea as CryEngine docs.
Specular in normal-map alpha; Fallout normal maps half diffuse resolution.
LoD: delete decal planes in LODs.

Parallax

Throttlekitty mentioned decals + parallax; Simon not fully convinced (no clear height map in early investigation). Later Cyberpunk article shows POM decals as evolution.

引用这一章的笔记

游戏美术断边贴花：从 Fallout 3 到 Cyberpunk POMBroken Edge Decals