RenderDoc MCP

RenderDoc MCP

Exposes RenderDoc capture analysis to AI clients via MCP, enabling offline analysis of .rdc files (action tree, pipeline state, textures, shaders) and GUI state interaction on Windows.

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RenderDoc MCP

A Model Context Protocol server that exposes RenderDoc capture analysis to AI clients (CodeMaker, Claude Desktop, etc.).

Clone 即用:RenderDoc 1.43 二进制已 vendored 进仓库,无需任何外部依赖。


工具一览(14 个)

离线分析(不需要 RenderDoc GUI 开着)

工具 功能
open_capture(path) 打开 .rdc 文件
close_capture() 关闭当前 capture
get_capture_info() API 类型、vendor、action 数
list_actions(parent_eid, max_depth) 遍历 action 树
get_action_detail(eid) 单个 action 详情
get_pipeline_state(eid) 拿到指定 eid 的全套绑定(VS/HS/DS/GS/PS/CS、SRV/UAV、采样器、RT/Depth)
summarize_render_passes(eid_range, marker_depth, depth, include_mermaid, mermaid_grouping) 整帧 render pass 总览,可选返回 Mermaid 流程图(flatsubgraph 嵌套分组)
list_resources(kind, limit) 列 texture / buffer / shader
get_resource_info(rid) 单个资源详情
dump_texture(rid, output_path, eid, mip, slice, fmt) 导出贴图为 png/jpg/bmp/tga
get_shader(rid, entry_index, target) shader 反汇编(DXBC/DXIL/SPIR-V,支持选 ISA target)+ reflection

GUI 联动(需要 RenderDoc GUI 开着 + 加载 .rdc)

工具 速度 功能
get_renderdoc_gui_state() ~590ms 全部 GUI 状态(选中 eid + 像素 + RT 信息等)
get_renderdoc_selected_eid() ~480ms 只读用户当前选中的 eid
get_renderdoc_pixel() ~210ms 只读 hover / right-click 的 pixel + UV + 颜色

GUI 联动通过 Windows UI Automation 读 RenderDoc 主窗口; 不能 读 Texture Viewer 渲染区里的任意像素,只能读 RenderDoc 自己显示出来的内容。


关键约束

Python 必须 3.11.x 64-bitrenderdoc.pyd 绑死 CPython 3.11 ABI,3.10/3.12 都会 ImportError)
OS Windows(uiautomation 仅 Windows)
Session 单 capture 单例(open 新自动关旧)
MCP 传输 stdio(stdout 归 JSON-RPC,所有日志走 stderr)

快速上手

:: 1. 创建 Python 3.11 venv
py -3.11 -m venv .venv
.venv\Scripts\activate

:: 2. 安装
pip install -e .

:: 3. 环境自检
python scripts\check_env.py

:: 4. 启动 MCP server(stdio 模式)
python -m renderdoc_mcp.server
:: 或装好后直接:
renderdoc-mcp

冒烟测试(需要 .rdc 文件):

:: Phase 1:会话 + action 树
python scripts\smoke_phase1.py "path\to\your.rdc"

:: Phase 2:资源 / 贴图导出 / shader 反汇编 / pipeline state
python scripts\smoke_phase2.py "path\to\your.rdc"

:: Phase 4.1:summarize_render_passes(默认 medium 采样 + flat Mermaid)
python scripts\smoke_phase4_1.py "path\to\your.rdc"
:: 也可以指定采样档位 + Mermaid 分组:
python scripts\smoke_phase4_1.py "path\to\your.rdc" medium subgraph

:: 纯 Python 校验 Mermaid subgraph 渲染(无 RenderDoc 依赖,离线跑)
python scripts\check_subgraph.py

CodeMaker / Claude Desktop 集成

mcp_settings.json 中加入:

{
  "mcpServers": {
    "renderdoc": {
      "command": "<repo-root>\\.venv\\Scripts\\renderdoc-mcp.exe"
    }
  }
}

二进制已 vendored,不需要 设置 RENDERDOC_RELEASE_DIR。 仅当想覆盖到本地新编译的 RenderDoc 时,可在 env 节点加 "RENDERDOC_RELEASE_DIR": "...\\x64\\Release"


加载顺序(rd_loader)

renderdoc.pyd / renderdoc.dll 的查找优先级:

  1. setup_renderdoc(release_dir=...) 显式传入参数
  2. RENDERDOC_RELEASE_DIR 环境变量(开发态覆盖)
  3. src/renderdoc_mcp/_vendor/(默认,仓库自带)

进一步阅读

  • PLAN.md — 项目完整计划、Phase 进度、技术决策、UIA 探测结论、本机环境信息等

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