/postprocess

name: unity-postprocess
description: Configure modern SRP post-processing on URP/HDRP

> **Before calling any skill in this module:** if you are about to call a skill with parameters guessed from its name or description, STOP — read this file (or fetch its schema via `GET /skills/recommend?includeSchema=true`) first. If you already have the parameter definitions from recommend/schema, you may proceed straight to dryRun.

Triggers

• Setting up post-processing
• Adding effects to a VolumeProfile
• Tuning URP/HDRP scene look
• 搭建后处理、向 VolumeProfile 添加效果、调整 URP/HDRP 场景观感

PostProcess Skills

Modern URP / HDRP post-processing skills built on top of the SRP Volume framework. For Volume container / profile CRUD (`volume_profile_create`, `volume_create`, etc.), use the `volume` module.

Operating Mode

• Query skills (`postprocess_list_effects`, `postprocess_get_effect`) are `SkillMode.SemiAuto` — they run in all three modes without grant.
• Mutating skills (`postprocess_add_effect`, `postprocess_set_parameter`, `postprocess_set_bloom`, `postprocess_set_depth_of_field`, `postprocess_set_tonemapping`, `postprocess_set_vignette`, `postprocess_set_color_adjustments`) are `SkillMode.FullAuto` — under **Approval** they need user grant (grant triggers one server-side execute returning the result); under **Auto** / **Bypass** they execute directly.
• `postprocess_remove_effect` carries `SkillOperation.Delete` and is **auto-forbidden** in Approval / Auto modes (NeverInSemi). Only **Bypass** or the user-managed **Allowlist** can run it.

SRP Package Stub

This module is compiled against `com.unity.render-pipelines.core` (`SRP_CORE`). When neither URP nor HDRP is installed (no SRP Core), **every** skill returns a stub `{ error: "Scriptable Render Pipeline Core package … is not installed." }` (`RenderPipelineSkillsCommon.NoSRP()`). The stub is a diagnostic payload, not a permission denial — it does **not** require grant and is **not** treated as NeverInSemi.

Guardrails

**DO NOT**:

• Use this module for PPv2 / `com.unity.postprocessing`
• Use this module for general Volume container/profile management; use `volume`

**Runtime-first rules**:

• Always call `postprocess_list_effects` before assuming an effect exists on the active pipeline
• Use `postprocess_get_effect` or `volume_get_component` to inspect real parameter names before setting generic parameters
• Prefer the dedicated high-frequency skills (`postprocess_set_bloom`, `postprocess_set_depth_of_field`, etc.) over guessing generic parameter names
• Treat URP and HDRP parameter surfaces as similar-but-not-identical; do not reuse names blindly across pipelines

Skills

`postprocess_list_effects`

List modern SRP post-processing effects supported by the active pipeline.

`postprocess_add_effect`

Add a post-processing effect override to a VolumeProfile.

`postprocess_remove_effect`

Remove a post-processing effect override from a VolumeProfile.

`postprocess_get_effect`

Inspect a post-processing effect override.

`postprocess_set_parameter`

Set one parameter on a post-processing effect override.

`postprocess_set_bloom`

Configure Bloom.

`postprocess_set_depth_of_field`

Configure Depth Of Field.

`postprocess_set_tonemapping`

Configure Tonemapping.

`postprocess_set_vignette`

Configure Vignette.

`postprocess_set_color_adjustments`

Configure Color Adjustments.

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Exact Signatures

Exact names, parameters, defaults, and returns are defined by `GET /skills/schema` or `unity_skills.get_skill_schema()`, not by this file.