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nan 076a8c90f1 Add specifications for two-times upscale and unified depth plane features

- Introduced the two-times upscale specification detailing requirements for unified output, fixed model presets, arbitrary dimensions, and consistent job behavior.
- Added scenarios for existing models, repeated upscale, and handling of alpha preservation.
- Created the unified depth plane specification outlining geometry modes, stable interface, and asset evaluation.
- Defined scenarios for mode switching, relief and camera preservation, and validation of delivered assets.

2026-09-17 17:19:05 +08:00

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cutout-boundary-smoothing Specification

Purpose

TBD - created by archiving change weight-cutout-boundary-smoothing. Update Purpose after archive.

Requirements

Requirement: Boundary-specific smoothing strength

O Image Depth Cutout SHALL 使用单个 Boundary Smooth 输入控制边界平滑次数。Split 边 SHALL 使用完整 Smooth Weight，原始 Outline SHALL 使用 0.1 倍 Smooth Weight；两类影响相交时 Split 强度 MUST 优先。

Scenario: Separate Split and Outline response

WHEN 同一网格同时存在 Split 边与原始 Outline 且启用 Boundary Smooth
THEN Split 边按完整 Smooth Weight 平滑
AND 仅受 Outline 影响的点按其 0.1 倍平滑

Scenario: Split and Outline intersection

WHEN Split 与 Outline 的两圈影响范围相交
THEN 相交区域使用两者中较强的 Split influence

Requirement: Boundary Smooth default and bypass

O Image Depth Cutout 的 Boundary Smooth SHALL 默认为 4，保持范围 0–16；值为 0 时 MUST 完全旁路边界平滑。

Scenario: New node group defaults

WHEN 构建新的 O Image Depth Cutout 节点组
THEN Boundary Smooth 默认值为 4

Scenario: Disabled boundary smoothing

WHEN Boundary Smooth 为 0
THEN Split 边和 Outline 均不发生边界平滑位移

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