DCC production guide
Weighted Normals and Hard-surface Bevel Guide
Direct answer: Hard-surface shading is ready when bevel width, support edges, topology layout, and weighted normals all reinforce the same highlight logic from the target camera distance. Weighted normals improve readability, but they do not replace clean topology or deliberate bevel structure.
Weighted NormalAngle ArtifactBevel WeightClean TopologyHolding EdgeShell Thickness
When weighted normals help
Weighted Normal is most useful on broad panels, chamfered product edges, and modular environment pieces where small bevels should read crisply without adding dense support loops everywhere. It reduces muddy gradients on flat faces and can keep a low-to-mid poly asset looking stable in motion.
Bevel width versus support edges
Bevel Weight and Support Edge placement should come from the intended highlight size. If the bevel is too thin, the model will shimmer or disappear under compression; if it is too wide, the object looks rounded. Support Edge and Holding Edge placement matters most on corners that must stay tight under subdivision or weighted normal processing.
Topology rules that still matter
Clean Topology and Topology Layout still decide whether weighted normals behave predictably. Long skinny faces, inconsistent triangulation, and broken shell thickness can create Angle Artifact problems that no modifier will solve. Review triangle direction around corners, cutouts, and fillets before trusting the shaded preview.
Model review checklist
Approve only after checking shaded rotation, wireframe, export triangulation, and target-engine import. If a panel looks flat in the DCC but bands in engine, compare import smoothing, custom normal preservation, and any normal-map interaction on top of the mesh normals.
Worked example
A handheld sci-fi scanner has a flat display housing, rounded trigger, and thin panel seams. The housing benefits from weighted normals, the trigger needs enough Shell Thickness to hold a silhouette, and the seam cuts need support edges so panel breaks remain visible after triangulation. Review the asset under a moving key light before approval.
Multilingual production terms
Use this terminology table when hard-surface review comments need exact Chinese, English, and Japanese wording for shading, bevel, and topology decisions.
| 中文 | English | 日本語 | Workflow usage note |
|---|---|---|---|
| 法线加权 | Weighted Normal | 加重法線 | Improves broad-panel shading by weighting face normals by area or angle. |
| 夹角伪影 | Angle Artifact | 角度アーティファクト | Caused by inconsistent triangulation, long thin faces, or broken custom normals. |
| 倒角权重 | Bevel Weight | ベベルウェイト | Controls highlight width; pair with deliberate support-edge placement. |
| 干净拓扑 | Clean Topology | クリーントポロジー | Predictable quad flow that supports subdivision, deformation, and shading. |
| 保持边 | Holding Edge | ホールディングエッジ | Tightens a corner under subdivision without adding dense loops. |
| 壳厚 | Shell Thickness | シェル厚 | Keeps thin parts readable from angles and in exploded views. |
| 支撑边 | Support Edge | サポートエッジ | Defines bevel highlight; spacing controls how tight the edge reads. |
| 布线 | Topology Layout | トポロジー配線 | Overall edge-flow plan that makes bevels, panels, and cutouts behave consistently. |
Related pages and next step
Open SEELE AI workspaceFAQ
Should weighted normals replace bevels?
No. Weighted normals improve face shading, but visible edge definition still depends on actual bevel geometry or support structure.
What causes angle artifacts on mechanical parts?
Common causes are long thin triangles, inconsistent triangulation around corners, over-aggressive smoothing, and broken custom normal preservation.
How do I review support edges quickly?
Rotate a strong side light around the model and compare highlight width on mirrored or repeated parts. Uneven highlight width usually points to inconsistent support-edge spacing.
When is shell thickness part of the shading review?
When the part is thin enough to reveal silhouette collapse, interior shading errors, or unrealistic edge softness from certain camera angles.