Unity Shadergraph

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

• Creating a Shader Graph
• Inspecting graph structure
• Making controlled blackboard/node edits
• 创建 Shader Graph、检查其结构、对黑板/节点做受控编辑

ShaderGraph Skills

Shader Graph asset workflows for Unity 2022.3+ with source-backed template handling, MultiJson inspection, and constrained internal-editor reflection writes.

Operating Mode

• Query skills (shadergraph_list_templates, shadergraph_list_assets, shadergraph_get_info, shadergraph_get_structure, shadergraph_list_supported_nodes, shadergraph_list_properties, shadergraph_list_keywords) are SkillMode.SemiAuto — they run in all three modes without grant.
• All other mutators (create graph / subgraph, add/move/connect/disconnect node, set node defaults/settings, add/update property/keyword, reimport) are SkillMode.FullAuto — under Approval they need user grant (grant triggers one server-side execute returning the result); under Auto / Bypass they execute directly.
• shadergraph_remove_node, shadergraph_remove_property, shadergraph_remove_keyword carry SkillOperation.Delete and are auto-forbidden in Approval / Auto modes (NeverInSemi). Only Bypass or the user-managed Allowlist can run them.

Reflection Fragility

This module reaches into UnityEditor.ShaderGraph and UnityEditor.ShaderGraph.Internal via reflection (see ShaderGraphReflectionHelper.cs and ShaderGraphNodeRegistry.cs). The supported node whitelist, slot layout, and settings keys are version-pinned to com.unity.shadergraph 14.0.x (Unity 2022.3) with limited Unity 6 coverage. Treat the following as a hard contract:

• Never assume an internal type, field, or slot id exists from memory — always cross-check with shadergraph_list_supported_nodes and shadergraph_get_structure first.
• If a Shader Graph package update changes internal types or MultiJson schema, mutators may fail or silently no-op until the registry is updated.
• If a skill returns an error mentioning a reflection / type lookup failure, do not retry with different argument shapes — report the version mismatch and stop.

Guardrails

Routing:

• HLSL text shaders: use shader_*
• Shader Graph / Sub Graph assets: use this module
• Source-anchored design guidance before proposing graph architecture: load shadergraph-design

Runtime-first rules:

• Always call shadergraph_get_structure before any node-level edit; treat returned nodeId and slotId as the only valid identifiers
• Never invent slot names, node ids, or template availability from memory
• shadergraph_set_node_defaults only applies to unconnected input slots; if the slot is connected, disconnect first
• shadergraph_set_node_settings only writes the whitelist exposed by shadergraph_list_supported_nodes
• PropertyNode only binds existing blackboard properties; create the property first with shadergraph_add_property
• SubGraph editing is limited to ordinary nodes; this module does not edit SubGraphOutputNode structure

Validated behavior:

• Unity 2022.3 + com.unity.shadergraph@14.0.12 does not ship GraphTemplates/; shadergraph_create_graph falls back to blank graph creation
• Unity 6 ShaderGraph packages may provide actual template directories; template listing and template-copy creation remain available there
• The supported node subset is runtime-filtered. The shared overlap is 28 nodes in live validation, while AppendVectorNode is currently Unity 6 only