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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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geometry-depth-controls Specification

Purpose

TBD - created by archiving change refine-image-output-semantics. Update Purpose after archive.

Requirements

Requirement: Geometry depth groups expose Reference Depth

系统 SHALL 在 O Image Depth Plane、O Image Cutout、Depth Balloon 与 Depth Surface 的 Geometry Nodes 接口中使用 Reference Depth 表示深度纹理的参考距离，并且 MUST 不再公开 Base Plane Depth。

Scenario: Depth Plane initializes its reference

WHEN 系统根据 depth.json 创建 Depth Plane Modifier
THEN reference_depth × uniform_scale SHALL 写入 Reference Depth

Scenario: Depth Cutout initializes its reference

WHEN 系统根据最终网格内容标定 Depth Balloon 或 Depth Surface
THEN 标定结果 SHALL 写入主 Cutout 与对应子组的 Reference Depth

Scenario: Node asset exposes the current interface only

WHEN 系统构建并验证 O_AnyImage.blend
THEN 所有相关节点组、面板、依赖连线和 Modifier 输入 SHALL 只包含 Reference Depth，不得保留旧名称或兼容 socket

Requirement: Reference Depth keeps existing geometry meaning

Reference Depth SHALL 继续作为采样 Depth 的运算基准，不改变 Depth Plane、Depth Balloon 或 Depth Surface 的几何方向、尺度、厚度和位移公式。

Scenario: Reference control changes relative depth

WHEN 用户修改 Reference Depth
THEN Geometry Nodes SHALL 使用 Reference Depth - sampled depth 的既有相对深度关系更新几何

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