Official agent skill

Directxmesh Usage

Guide for integrating the DirectXMesh geometry processing library into a C++ project.

OfficialMITAuto-check passed

Install Directxmesh Usage

skills CLI

$ npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install microsoft/DirectXMesh directxmesh-usage --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/directxmesh-usage .claude/skills/directxmesh-usage && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "directxmesh-usage" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/directxmesh-usage into .claude/skills/directxmesh-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "directxmesh-usage", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/microsoft/DirectXMesh/tree/main/skills/directxmesh-usage

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install microsoft/DirectXMesh directxmesh-usage --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/directxmesh-usage .agents/skills/directxmesh-usage && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "directxmesh-usage" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/directxmesh-usage into .agents/skills/directxmesh-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "directxmesh-usage", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install microsoft/DirectXMesh directxmesh-usage --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/directxmesh-usage .cursor/skills/directxmesh-usage && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "directxmesh-usage" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/directxmesh-usage into .cursor/skills/directxmesh-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "directxmesh-usage", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/microsoft/DirectXMesh.git --path skills/directxmesh-usage

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install microsoft/DirectXMesh directxmesh-usage --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/directxmesh-usage .gemini/skills/directxmesh-usage && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "directxmesh-usage" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/directxmesh-usage into .gemini/skills/directxmesh-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "directxmesh-usage", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install microsoft/DirectXMesh directxmesh-usage

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/directxmesh-usage .github/skills/directxmesh-usage && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "directxmesh-usage" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/directxmesh-usage into .github/skills/directxmesh-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "directxmesh-usage", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install microsoft/DirectXMesh directxmesh-usage --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/directxmesh-usage .opencode/skills/directxmesh-usage && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "directxmesh-usage" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/directxmesh-usage into .opencode/skills/directxmesh-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "directxmesh-usage", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: directxmesh-usage
GitHub stars: 859
Token cost: ~1.2k tokens
SKILL.md length: 353 words
Files: 2
Skills in repo: 2
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Guide for integrating the DirectXMesh geometry processing library into a C++ project.

SKILL.md covers When to Use, Overview, Integration Methods and Header Usage, plus 5 more sections
Reaches raw.githubusercontent.com

What it does

Directxmesh Usage is an agent skill from microsoft/DirectXMesh, published by the product's own GitHub organization. Guide for integrating the DirectXMesh geometry processing library into a C++ project.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `reference/overview.md`).

It works with C++ and Windows. The repository describes itself as: DirectXMesh geometry processing library. The licence is MIT.

Example prompts

“/directxmesh-usage”

What it can do on your machine

Read from SKILL.md and the folder at commit 27e180b. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are json, bash, cmake, cpp and mermaid).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
- raw.githubusercontent.com
Also links to:
- github.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Directxmesh Usage loads about 1.2k tokens when it runs. Until then it costs about 26 tokens; SKILL.md has 353 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~26
When it runs · the whole SKILL.md, loaded when a task matches: ~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from microsoft/DirectXMesh at commit 27e180b, republished under its MIT licence (© microsoft). 353 words, ~1,175 tokens.

Download SKILL.mdSave it as .claude/skills/directxmesh-usage/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: directxmesh-usage
description: Guide for integrating the DirectXMesh geometry processing library into a C++ project.
license: MIT
metadata.author: chuckw
metadata.version: 1.0

DirectXMesh Usage Guide

This skill provides guidance for integrating the DirectXMesh geometry processing library into a C++ project.

When to Use

Invoke this skill when:

Adding DirectXMesh as a dependency to a new or existing project.
Writing code that processes mesh geometry (normals, tangents, optimization, meshlets).
Needing to understand the typical DirectXMesh processing pipeline.

Overview

DirectXMesh is a geometry processing library for Direct3D 11 and Direct3D 12 applications. It provides support for loading and saving mesh data, and performing various geometry processing operations including normal and tangent computation, adjacency generation, and mesh optimization.

Repository: https://github.com/microsoft/DirectXMesh
Documentation: https://github.com/microsoft/DirectXMesh/wiki
NuGet Packages: directxmesh_desktop_win10, directxmesh_uwp
vcpkg Port: directxmesh

Integration Methods

vcpkg manifest-mode (Recommended)

In your vcpkg.json file, add the following:

json

{
  "$schema": "https://raw.githubusercontent.com/microsoft/vcpkg-tool/main/docs/vcpkg.schema.json",
  "dependencies": [
    "directxmesh"
  ]
}

vcpkg (classic)

bash

vcpkg install directxmesh

Features: dx12 (DirectX 12 input layout support), tools (command-line tools). Triplets: x64-windows, x64-linux, arm64-windows, etc.

For DLL usage (x64-windows default triplet), define DIRECTX_MESH_IMPORT in your consuming project. For static library usage, use -static-md triplet variants.

CMakeLists.txt:

cmake

find_package(directxmesh CONFIG REQUIRED)
target_link_libraries(${PROJECT_NAME} PRIVATE Microsoft::DirectXMesh)

NuGet

Use directxmesh_desktop_win10 for Win32 desktop applications or directxmesh_uwp for UWP apps.

Project Reference

Add the appropriate .vcxproj from the DirectXMesh/ folder to your solution and add a project reference. Add the DirectXMesh directory to your Additional Include Directories.

Header Usage

cpp

#include <d3d12.h>        // or <d3d11_1.h> — include BEFORE DirectXMesh.h
#include "DirectXMesh.h"

using namespace DirectX;

All functions reside in the DirectX namespace. Most functions have overloads for both 16-bit and 32-bit index buffers.

Show full SKILL.md (140 more words)Show less

Typical Processing Pipeline

mermaid

flowchart TD
    A[Load geometry\npositions, indices, texcoords] --> B
    B[GenerateAdjacencyAndPointReps] -->|adjacency, pointRep| C
    C[Validate\noptional diagnostics] --> D
    D[Clean\nfix bowties, degenerate triangles] -->|dupVerts| E
    E[ComputeNormals / ComputeTangentFrame] --> F
    F[AttributeSort] -->|faceRemap| G
    G[OptimizeFaces] -->|faceRemap| H
    H[ReorderIB\napply face remap] --> I
    I[OptimizeVertices] -->|vertexRemap| J
    J[FinalizeIB + FinalizeVB\napply vertex remap and dupVerts] --> K
    K[CompactVB\noptional, remove trailing unused vertices] --> L
    L[ComputeMeshlets] -->|"meshlets, uniqueVertexIB (uint8_t), primitiveIndices"| M
    M[ComputeCullData\nfor mesh shader GPU culling]

Note: uniqueVertexIB from ComputeMeshlets is a packed buffer of uint16_t or uint32_t indices (matching the original IB format). Reinterpret-cast it to the appropriate type for ComputeCullData.

Error Handling

Most functions return HRESULT. Check with SUCCEEDED(hr) or FAILED(hr).
Functions marked noexcept never throw; they return E_OUTOFMEMORY or E_INVALIDARG on failure.
Functions using std::vector or std::function may throw on allocation failure

Key References

Public API header: DirectXMesh/DirectXMesh.h — read this for exact signatures and SAL annotations.
API overview table: See reference/overview.md in this skill folder.
Wiki documentation: https://github.com/microsoft/DirectXMesh/wiki
Utility headers: Utilities/WaveFrontReader.h (OBJ file loading), Utilities/FlexibleVertexFormat.h (legacy FVF conversion).

Platform Notes

Windows desktop (Win8.1+), UWP, Xbox (GDK), and Linux are supported.
Non-Windows builds require the DirectX-Headers package and define USING_DIRECTX_HEADERS.
The library requires C++17 to build but the public API is C++11 compatible.

Files

SKILL.md and 1 other file in skills/directxmesh-usage of microsoft/DirectXMesh.

SKILL.md
reference/overview.md

Open the folder on GitHubat commit 27e180b

Compare with similar skills

Directxmesh Usage next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Directxmesh Usage compared with similar skills
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Build Fluentqt Guicalvinhxx/Fluent-Qt	152	—	~1.6k	Automated safety check: Pass	MIT	3 days ago
Windows Parityn1m21n/Infinite	260	—	~4.6k	Automated safety check: Pass	Custom licence	yesterday
Geiss Portad-repo/nullplayer	156	—	~5.3k	Automated safety check: Pass	Custom licence	yesterday
Translation Diff ExportDevolutions/UniGetUI	26k	—	~1.1k	Automated safety check: Pass	MIT	yesterday
Translation Diff ImportDevolutions/UniGetUI	26k	—	~750	Automated safety check: Pass	MIT	yesterday

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Questions about Directxmesh Usage

What does Directxmesh Usage do?

Guide for integrating the DirectXMesh geometry processing library into a C++ project. Directxmesh Usage is an agent skill from microsoft/DirectXMesh, published by the product's own GitHub organization. Guide for integrating the DirectXMesh geometry processing library into a C++ project.

How do I install Directxmesh Usage in Claude Code?

Run `npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a claude-code`. Or copy the skill folder (skills/directxmesh-usage in microsoft/DirectXMesh) into .claude/skills/directxmesh-usage in your project. Claude Code loads it when a task matches its description.

How do I install Directxmesh Usage in Codex?

Run `npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a codex`. Or copy the skill folder (skills/directxmesh-usage in microsoft/DirectXMesh) into .agents/skills/directxmesh-usage in your project. Codex loads it when a task matches its description.

Can I use Directxmesh Usage in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add microsoft/DirectXMesh --skill directxmesh-usage -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/directxmesh-usage, .gemini/skills/directxmesh-usage, .github/skills/directxmesh-usage and .opencode/skills/directxmesh-usage in your project.

What does Directxmesh Usage need to run?

SKILL.md names no scripts, command-line tools or credentials: Directxmesh Usage is instructions for the agent only.

Does Directxmesh Usage access the network?

SKILL.md names 2 domains. In commands or code: raw.githubusercontent.com; the agent is likely to contact it when it follows the instructions. As links in the text: github.com. This is read from the text; nothing was executed.

Is Directxmesh Usage safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Directxmesh Usage use?

Directxmesh Usage is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Directxmesh Usage use?

About 1.2k tokens (SKILL.md is roughly 4.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Directxmesh Usage?

Skills that share tags, products or a category with Directxmesh Usage: Build Fluentqt Gui (calvinhxx/Fluent-Qt, 152 stars), Windows Parity (n1m21n/Infinite, 260 stars), Geiss Port (ad-repo/nullplayer, 156 stars) and Translation Diff Export (Devolutions/UniGetUI, 26k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Directxmesh Usage?

microsoft (a GitHub organization, an official publisher) maintains it in microsoft/DirectXMesh, which has 859 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 6, 2026.

Source: microsoft/DirectXMesh on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Directxmesh Usage

Install Directxmesh Usage

Facts

At a glance

What it does

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

DirectXMesh Usage Guide

When to Use

Overview

Integration Methods

vcpkg manifest-mode (Recommended)

vcpkg (classic)

NuGet

Project Reference

Header Usage

Typical Processing Pipeline

Error Handling

Key References

Platform Notes

Further Reading

Files

Compare with similar skills

Similar skills

Build Fluentqt Gui

Windows Parity

Geiss Port

Translation Diff Export

Translation Diff Import

Paddle Build

More from microsoft/DirectXMesh

Mesh Converter

Questions about Directxmesh Usage

Install Directxmesh Usage

Facts

At a glance

What it does

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

DirectXMesh Usage Guide

When to Use

Overview

Integration Methods

vcpkg manifest-mode (Recommended)

vcpkg (classic)

NuGet

Project Reference

Header Usage

Typical Processing Pipeline

Error Handling

Key References

Platform Notes

Further Reading

Files

Compare with similar skills

Similar skills

Build Fluentqt Gui

Windows Parity

Geiss Port

Translation Diff Export

Translation Diff Import

Paddle Build

More from microsoft/DirectXMesh

Mesh Converter

Related

Questions about Directxmesh Usage