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A cross-platform cli dynamic wallpaper tool to make website or shader as your wallpaper

wewa 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# wewa

Display web content as desktop wallpaper on Windows, Linux and macOS.

A cross-platform Rust CLI tool that renders web pages (URLs or local HTML files) as fullscreen desktop wallpaper with multi-monitor support. Especially support ShaderToy page as **dynamic wallpaper** out of box, and also Ships with **37 built-in [ShaderToy](https://www.shadertoy.com) shaders** — just run `wewa -b <name>` and enjoy.

跨平台 Rust CLI 工具，将网页内容渲染为全屏桌面壁纸，支持多显示器。特别支持了ShaderToy站点的支持（传入地址即可设置为壁纸），并且内置 **37 款 [ShaderToy](https://www.shadertoy.com) 着色器**作为动态壁纸，运行 `wewa -b <名称>` 即可开箱即用。

---

**[English](#english)** | **[中文](#中文)**

---

## Preview / 预览

Built-in wallpapers are all dynamic wallpapers and optimized with GPU performance, you can check out demonstraition from clicking preview screenshots as below to link to ShaderToy page.

内建的着色器壁纸均为动态壁纸，并且已优化了GPU性能，可以通过点击下方的预览图至ShaderToy站点来预览效果。

</div>

<table>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/4tdSWr"><img src="previews/2dclouds.png" width="200"></a> 2dclouds by <a href="https://www.shadertoy.com/view/4tdSWr">drift</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/WcKXDV"><img src="previews/accretion.png" width="200"></a> accretion by <a href="https://www.shadertoy.com/view/WcKXDV">Xor</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/33KBDm"><img src="previews/ascend.png" width="200"></a> ascend by <a href="https://www.shadertoy.com/view/33KBDm">bug</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/XtGGRt"><img src="previews/auroras.png" width="200"></a> auroras by <a href="https://www.shadertoy.com/view/XtGGRt">nimitz</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/3XSBDW"><img src="previews/chillywave.png" width="200"></a> chillywave by <a href="https://www.shadertoy.com/view/3XSBDW">Tornax07</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/NflGRM"><img src="previews/chillywave2.png" width="200"></a> chillywave2 by <a href="https://www.shadertoy.com/view/NflGRM">Tornax07</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/W3K3zy"><img src="previews/classic4colors.png" width="200"></a> classic4colors by <a href="https://www.shadertoy.com/view/W3K3zy">zosxavius</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/XslGRr"><img src="previews/clouds.png" width="200"></a> clouds by <a href="https://www.shadertoy.com/view/XslGRr">iq</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/3ttSzr"><img src="previews/crumpledwave.png" width="200"></a> crumpledwave by <a href="https://www.shadertoy.com/view/3ttSzr">nasana</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/WcdczB"><img src="previews/darktransit.png" width="200"></a> darktransit by <a href="https://www.shadertoy.com/view/WcdczB">diatribes</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/Dds3WB"><img src="previews/forknixietubeclock.png" width="200"></a> forknixietubeclock by <a href="https://www.shadertoy.com/view/Dds3WB">picoplanetdev</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/WtSfWK"><img src="previews/hexagonalgrid.png" width="200"></a> hexagonalgrid by <a href="https://www.shadertoy.com/view/WtSfWK">iq</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/3tKSWV"><img src="previews/hexneonlove.png" width="200"></a> hexneonlove by <a href="https://www.shadertoy.com/view/3tKSWV">tutmann</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/Nff3Ds"><img src="previews/hieroglyphs.png" width="200"></a> hieroglyphs by <a href="https://www.shadertoy.com/view/Nff3Ds">nayk</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/MdfBzl"><img src="previews/iceandfire.png" width="200"></a> iceandfire by <a href="https://www.shadertoy.com/view/MdfBzl">mattz</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/4dcGRn"><img src="previews/linuxwallpaper.png" width="200"></a> linuxwallpaper by <a href="https://www.shadertoy.com/view/4dcGRn">movAX13h</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/NlcSRj"><img src="previews/mandelbrot.png" width="200"></a> mandelbrot by <a href="https://www.shadertoy.com/view/NlcSRj">JennySchub</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/NdVfzK"><img src="previews/montereywannabe.png" width="200"></a> montereywannabe by <a href="https://www.shadertoy.com/view/NdVfzK">mrange</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/sfS3Dz"><img src="previews/patternminimax.png" width="200"></a> patternminimax by <a href="https://www.shadertoy.com/view/sfS3Dz">PAEz</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/ddKXWh"><img src="previews/pinkvoid.png" width="200"></a> pinkvoid by <a href="https://www.shadertoy.com/view/ddKXWh">iVader</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/WfS3Dd"><img src="previews/plasma.png" width="200"></a> plasma by <a href="https://www.shadertoy.com/view/WfS3Dd">Xor</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/ltXczj"><img src="previews/plasmawaves.png" width="200"></a> plasmawaves by <a href="https://www.shadertoy.com/view/ltXczj">scarletshark</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/sc2GzW"><img src="previews/polyhedrons.png" width="200"></a> polyhedrons by <a href="https://www.shadertoy.com/view/sc2GzW">yli110</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/3l23Rh"><img src="previews/proteanclouds.png" width="200"></a> proteanclouds by <a href="https://www.shadertoy.com/view/3l23Rh">nimitz</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/fcf3Dn"><img src="previews/ps3xmb.png" width="200"></a> ps3xmb by <a href="https://www.shadertoy.com/view/fcf3Dn">llmciv</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/XsX3zl"><img src="previews/seventymelt.png" width="200"></a> seventymelt by <a href="https://www.shadertoy.com/view/XsX3zl">tomorrowevening</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/3csSWB"><img src="previews/singularity.png" width="200"></a> singularity by <a href="https://www.shadertoy.com/view/3csSWB">Xor</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/wsBBWD"><img src="previews/spiralgalaxy.png" width="200"></a> spiralgalaxy by <a href="https://www.shadertoy.com/view/wsBBWD">mrange</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/XlfGRj"><img src="previews/starnest.png" width="200"></a> starnest by <a href="https://www.shadertoy.com/view/XlfGRj">Kali</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/XX3fDH"><img src="previews/starshipreentry.png" width="200"></a> starshipreentry by <a href="https://www.shadertoy.com/view/XX3fDH">negentrope</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/slcXW8"><img src="previews/synthwavecanyon.png" width="200"></a> synthwavecanyon by <a href="https://www.shadertoy.com/view/slcXW8">mrange</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/sff3RB"><img src="previews/tilewarppt3.png" width="200"></a> tilewarppt3 by <a href="https://www.shadertoy.com/view/sff3RB">byt3_m3chanic</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/NcjGDh"><img src="previews/tumblerock.png" width="200"></a> tumblerock by <a href="https://www.shadertoy.com/view/NcjGDh">diatribes</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/332XWd"><img src="previews/undulatingurchin.png" width="200"></a> undulatingurchin by <a href="https://www.shadertoy.com/view/332XWd">ChunderFPV</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/WdlyRS"><img src="previews/voronoigradient.png" width="200"></a> voronoigradient by <a href="https://www.shadertoy.com/view/WdlyRS">gls9102</a></td>
<td align="center"><a href="https://www.shadertoy.com/view/fd3fD2"><img src="previews/wadongmo759.png" width="200"></a> wadongmo759 by <a href="https://www.shadertoy.com/view/fd3fD2">dongmo</a></td>
</tr>
<tr>
<td align="center"><a href="https://www.shadertoy.com/view/NtKGWw"><img src="previews/waveymc.png" width="200"></a> waveymc by <a href="https://www.shadertoy.com/view/NtKGWw">feresr</a></td>
<td></td>
<td></td>
<td></td>
</tr>
</table>

> All shaders are sourced from [ShaderToy](https://www.shadertoy.com). Thanks to all the talented shader artists!
>
> 所有着色器均来自 [ShaderToy](https://www.shadertoy.com)，感谢所有才华横溢的着色器艺术家！

---

## English

### Features

- **Cross-Platform** — Windows, Linux (Wayland: Hyprland, Sway, KDE 6+, GNOME) and macOS
- **Multi-Monitor** — Apply to all displays or target specific ones
- **Local File Support** — Built-in HTTP server for local HTML/JS/CSS projects
- **ShaderToy Integration** — Automatically converts ShaderToy URLs to fullscreen embed format. (Caution : native resolution may cause performance issues.)
- **Local `.shader` Support** — Wrap single-pass ShaderToy snippets into a fullscreen WebGL runtime (Better performance with `--scale` parameter)
- **iChannel Textures** — Supply 2D textures (`.png`/`.jpg`) and 3D volume textures (`.bin`) for ShaderToy shaders that use `iChannel0`–`iChannel3`
- **37 Built-in Shaders** — Curated collection of ShaderToy shaders with pre-tuned parameters, ready to use with `-b <name>`
- **IPC Control** — Stop wallpapers remotely via named pipes (Windows) or Unix domain sockets (Linux/macOS)
- **Graceful Shutdown** — Ctrl+C handling with platform-specific cleanup

### Platform Details

| Platform | Technique | WebView Backend |
|----------|-----------|-----------------|
| Windows | WorkerW desktop embedding | WebView2 (Edge) |
| Linux (Hyprland, Sway, KDE 6+) | GTK layer-shell background surface | WebKitGTK |
| Linux (GNOME) | GTK window + companion GNOME Shell extension | WebKitGTK |
| macOS | NSWindow desktop-level ordering | WKWebView |

### Requirements

- **Windows** — Windows 10 (April 2018+) or Windows 11; WebView2 Runtime (usually pre-installed)
- **Linux (Hyprland / Sway / KDE 6+)** — Wayland session with layer-shell support; GTK 3, WebKitGTK, gtk-layer-shell
- **Linux (GNOME)** — GNOME Shell 45+; GTK 3, WebKitGTK. A companion GNOME Shell extension is **automatically installed** on first run. A one-time log-out/log-in is required to activate the extension.
- **macOS** — macOS 10.10+; no additional dependencies (WKWebView is a system framework)

### Installation

#### Package Managers

```bash
# Homebrew
brew tap ownself/app-distribution https://github.com/ownself/app-distribution
brew install wewa

# Scoop
scoop bucket add ownself-app-distribution https://github.com/ownself/app-distribution
scoop install wewa

# AUR
yay -S wewa-bin
```

#### Build from Source

```bash
git clone https://github.com/ownself/wewa.git
cd wewa

# Linux dependencies (Debian/Ubuntu)
sudo apt install libgtk-3-dev libwebkit2gtk-4.1-dev libgtk-layer-shell-dev

cargo build --release
# Binary: target/release/wewa(.exe)
```

### Usage

```bash
# URL as wallpaper (all monitors)
wewa https://example.com/wallpaper.html

# Target a specific monitor (0-based index)
wewa https://example.com --display 0

# ShaderToy (auto-converted to fullscreen embed)
wewa "https://www.shadertoy.com/view/tlVGDt"

# Local ShaderToy-style shader with default full-resolution rendering
wewa ./octagrams.shader

# Lower shader render scale for better performance
wewa ./octagrams.shader --scale 0.5

# Slow down shader animation without changing shader source
wewa ./octagrams.shader --time-scale 0.5

# Speed up shader animation for comparison or debugging
wewa ./octagrams.shader --time-scale 2.0

# Shader with iChannel textures (2D png/jpg or 3D .bin volume)
wewa ./clouds.shader --channel0 textures/noise_rgba.png --channel1 textures/noise_grey.png --channel2 textures/noise_volume.bin

# Short aliases for channel and time-scale options
wewa ./clouds.shader --c0 textures/noise_rgba.png --c1 textures/noise_grey.png --ts 0.5

# Use a built-in shader (no files needed)
wewa -b starnest

# List all available built-in shaders
wewa -b list

# Pick a random built-in shader
wewa -r

# Override built-in defaults
wewa -b clouds -s 1.0 --ts 0.5

# Local HTML file
wewa ./my-wallpaper/index.html

# Directory containing index.html
wewa ./my-wallpaper/

# Custom HTTP server port
wewa ./wallpaper.html --port 9000

# Stop wallpaper on display 0
wewa --stop 0

# Stop all wallpapers
wewa --stopall
wewa --sa

# Verbose output
wewa --verbose https://example.com
```

### Command Line Options

| Option | Short | Description |
|--------|-------|-------------|
| `--builtin <NAME>` | `-b` | Use a built-in shader by name (use `list` to see all) |
| `--random` | `-r` | Use a random built-in shader |
| `--display <N>` | `-d` | Target specific display (0-based index) |
| `--stop <N>` | | Stop wallpaper on display N |
| `--stopall` | `--sa` | Stop all running wallpapers |
| `--port <PORT>` | `-p` | HTTP server port for local files (default: 8080) |
| `--scale <FACTOR>` | `-s` | Shader render scale (default: 1.0, or per-shader default with `-b`) |
| `--time-scale <FACTOR>` | `--ts` | Shader animation time scale (default: 1.0, or per-shader default with `-b`) |
| `--channel0 <FILE>` | `--c0` | Texture file for iChannel0 (2D image or 3D `.bin` volume) |
| `--channel1 <FILE>` | `--c1` | Texture file for iChannel1 |
| `--channel2 <FILE>` | `--c2` | Texture file for iChannel2 |
| `--channel3 <FILE>` | `--c3` | Texture file for iChannel3 |
| `--verbose` | `-v` | Enable verbose output |
| `--help` | `-h` | Show help message |
| `--version` | `-V` | Show version |

### Shader Tuning

- `--scale` changes render resolution for local `.shader` inputs. Lower values usually improve performance at the cost of sharpness.
- `--time-scale` changes the speed of the injected `iTime` and `iTimeDelta` values for local `.shader` inputs.
- Use `--time-scale 1.0` for original speed, values below `1.0` to slow animation down, values above `1.0` to speed it up, and `0` to freeze time for debugging.
- `--time-scale` avoids editing shader source when you only want to compare animation pacing across different shaders.

### iChannel Textures

Many ShaderToy shaders read from `iChannel0`–`iChannel3` for noise, photos, or other data. You can supply these textures from local files:

- **2D textures** — any image format (`.png`, `.jpg`, etc.) → declared as `sampler2D`
- **3D volume textures** — ShaderToy `.bin` format (header: 4-byte signature + width/height/depth/channels, followed by raw uint8 data) → declared as `sampler3D`

The file extension determines the type: `.bin` = 3D volume, anything else = 2D texture.

Channels that are not provided are automatically declared. If the shader fails to compile with `sampler2D`, the engine retries with `sampler3D` — so most shaders work without any `--channel` flags, albeit with blank (black) texture reads.

To find a ShaderToy shader's iChannel configuration, open the shader page in a browser and run this in DevTools (F12) Console:

```javascript
JSON.stringify(gShaderToy.mEffect.mPasses.map((pass, pi) => ({
  pass: pi, type: pass.mType,
  inputs: pass.mInputs.map((inp, i) => inp ? {
    channel: i, type: inp.mInfo.mType, src: inp.mInfo.mSrc
  } : null).filter(x => x)
})), null, 2)
```

Then download the textures from `https://www.shadertoy.com<src_path>` in your browser.

### Built-in Shaders

The binary ships with 37 curated shaders and their required textures — no external files needed:

```bash
wewa -b list        # see all available names
wewa -b starnest    # use it
```

Each built-in shader has pre-tuned `scale` and `time_scale` defaults (configured in `builtins.json`) optimized for desktop wallpaper use. You can override any default with CLI flags:

```bash
wewa -b clouds -s 1.0 --ts 0.5
```

### Credits

The built-in shaders are sourced from [ShaderToy](https://www.shadertoy.com). We are grateful to the talented shader artists who created and shared these works:

| Shader | Author | ShaderToy |
|--------|--------|-----------|
| 2dclouds | drift | [4tdSWr](https://www.shadertoy.com/view/4tdSWr) |
| accretion | Xor | [WcKXDV](https://www.shadertoy.com/view/WcKXDV) |
| ascend | bug | [33KBDm](https://www.shadertoy.com/view/33KBDm) |
| auroras | nimitz | [XtGGRt](https://www.shadertoy.com/view/XtGGRt) |
| chillywave | Tornax07 | [3XSBDW](https://www.shadertoy.com/view/3XSBDW) |
| chillywave2 | Tornax07 | [NflGRM](https://www.shadertoy.com/view/NflGRM) |
| classic4colors | zosxavius | [W3K3zy](https://www.shadertoy.com/view/W3K3zy) |
| clouds | iq | [XslGRr](https://www.shadertoy.com/view/XslGRr) |
| crumpledwave | nasana | [3ttSzr](https://www.shadertoy.com/view/3ttSzr) |
| darktransit | diatribes | [WcdczB](https://www.shadertoy.com/view/WcdczB) |
| forknixietubeclock | picoplanetdev | [Dds3WB](https://www.shadertoy.com/view/Dds3WB) |
| hexagonalgrid | iq | [WtSfWK](https://www.shadertoy.com/view/WtSfWK) |
| hexneonlove | tutmann | [3tKSWV](https://www.shadertoy.com/view/3tKSWV) |
| hieroglyphs | nayk | [Nff3Ds](https://www.shadertoy.com/view/Nff3Ds) |
| iceandfire | mattz | [MdfBzl](https://www.shadertoy.com/view/MdfBzl) |
| linuxwallpaper | movAX13h | [4dcGRn](https://www.shadertoy.com/view/4dcGRn) |
| mandelbrot | JennySchub | [NlcSRj](https://www.shadertoy.com/view/NlcSRj) |
| montereywannabe | mrange | [NdVfzK](https://www.shadertoy.com/view/NdVfzK) |
| patternminimax | PAEz | [sfS3Dz](https://www.shadertoy.com/view/sfS3Dz) |
| pinkvoid | iVader | [ddKXWh](https://www.shadertoy.com/view/ddKXWh) |
| plasma | Xor | [WfS3Dd](https://www.shadertoy.com/view/WfS3Dd) |
| plasmawaves | scarletshark | [ltXczj](https://www.shadertoy.com/view/ltXczj) |
| polyhedrons | yli110 | [sc2GzW](https://www.shadertoy.com/view/sc2GzW) |
| proteanclouds | nimitz | [3l23Rh](https://www.shadertoy.com/view/3l23Rh) |
| ps3xmb | llmciv | [fcf3Dn](https://www.shadertoy.com/view/fcf3Dn) |
| seventymelt | tomorrowevening | [XsX3zl](https://www.shadertoy.com/view/XsX3zl) |
| singularity | Xor | [3csSWB](https://www.shadertoy.com/view/3csSWB) |
| spiralgalaxy | mrange | [wsBBWD](https://www.shadertoy.com/view/wsBBWD) |
| starnest | Kali | [XlfGRj](https://www.shadertoy.com/view/XlfGRj) |
| starshipreentry | negentrope | [XX3fDH](https://www.shadertoy.com/view/XX3fDH) |
| synthwavecanyon | mrange | [slcXW8](https://www.shadertoy.com/view/slcXW8) |
| tilewarppt3 | byt3_m3chanic | [sff3RB](https://www.shadertoy.com/view/sff3RB) |
| tumblerock | diatribes | [NcjGDh](https://www.shadertoy.com/view/NcjGDh) |
| undulatingurchin | ChunderFPV | [332XWd](https://www.shadertoy.com/view/332XWd) |
| voronoigradient | gls9102 | [WdlyRS](https://www.shadertoy.com/view/WdlyRS) |
| wadongmo759 | dongmo | [fd3fD2](https://www.shadertoy.com/view/fd3fD2) |
| waveymc | feresr | [NtKGWw](https://www.shadertoy.com/view/NtKGWw) |

### Troubleshooting

- **WebView2 not available (Windows)** — Install from [Microsoft](https://developer.microsoft.com/microsoft-edge/webview2/)
- **Layer-shell not available (Linux)** — Ensure you are on a Wayland session with a layer-shell compositor (e.g. Hyprland, Sway, KDE 6+), and install `libgtk-3-dev libwebkit2gtk-4.1-dev libgtk-layer-shell-dev`
- **GNOME: "please log out and log back in"** — On first run, wewa automatically installs its companion GNOME Shell extension. GNOME Shell must be restarted to load new extensions, and on Wayland the only way is to log out and log back in. Subsequent runs will work without restart.
- **Port already in use** — Use `--port 9000` to pick a different port
- **Shader performance is poor** — Use `--scale 0.5` or `--scale 0.75` for `.shader` inputs
- **Finding display numbers** — Run with `--verbose` to list detected displays

### Architecture

```
src/
├── main.rs           # Entry point, CLI dispatch, URL transformation
├── builtin.rs        # 37 embedded shaders & textures, built-in shader extraction
├── cli.rs            # Argument parsing (clap)
├── config.rs         # Configuration and instance tracking
├── shader.rs         # Shader file support, iChannel textures, WebGL runtime generation
├── server.rs         # Local HTTP server (tiny_http)
├── ipc.rs            # IPC (named pipes / Unix sockets)
├── display.rs        # Shared monitor data model
├── wallpaper.rs      # Shared wallpaper config / errors
└── platform/
    ├── windows/      # WorkerW technique + WebView2
    ├── linux/        # GTK layer-shell + WebKitGTK
    └── macos/        # NSWindow desktop-level + WKWebView
```

### License

MIT

---

## 中文

### 功能特性

- **跨平台** — 支持 Windows、Linux（Wayland：Hyprland、Sway、KDE 6+、GNOME）和 macOS
- **多显示器** — 应用到所有显示器或指定特定显示器
- **本地文件支持** — 内置 HTTP 服务器，支持本地 HTML/JS/CSS 项目
- **ShaderToy 集成** — 自动将 ShaderToy URL 转换为全屏嵌入格式（警告：原生分辨率可能会导致性能问题）
- **本地 `.shader` 支持** — 将单文件 ShaderToy 片段包装成全屏 WebGL 运行时（使用`--scale`参数使得性能更友好）
- **iChannel 纹理** — 为使用 `iChannel0`–`iChannel3` 的 ShaderToy 着色器提供 2D 纹理（`.png`/`.jpg`）和 3D 体积纹理（`.bin`）
- **37 款内置着色器** — 精选 ShaderToy 着色器合集，预调参数，通过 `-b <名称>` 即可开箱即用
- **IPC 控制** — 通过命名管道 (Windows) 或 Unix Domain Socket (Linux/macOS) 远程停止壁纸
- **优雅关闭** — Ctrl+C 处理并执行平台相关清理

### 平台实现

| 平台 | 技术方案 | WebView 后端 |
|------|----------|-------------|
| Windows | WorkerW 桌面嵌入 | WebView2 (Edge) |
| Linux (Hyprland, Sway, KDE 6+) | GTK layer-shell 背景层 | WebKitGTK |
| Linux (GNOME) | GTK 窗口 + GNOME Shell 配套扩展 | WebKitGTK |
| macOS | NSWindow 桌面层级窗口 | WKWebView |

### 系统要求

- **Windows** — Windows 10 (2018年4月更新+) 或 Windows 11；WebView2 运行时（通常已预装）
- **Linux (Hyprland / Sway / KDE 6+)** — 支持 layer-shell 的 Wayland 会话；GTK 3、WebKitGTK、gtk-layer-shell
- **Linux (GNOME)** — GNOME Shell 45+；GTK 3、WebKitGTK。配套 GNOME Shell 扩展会在**首次运行时自动安装**，需注销并重新登录一次以激活扩展。
- **macOS** — macOS 10.10+；无额外依赖（WKWebView 为系统框架）

### 安装

#### 包管理器安装

```bash
# Homebrew
brew tap ownself/app-distribution https://github.com/ownself/app-distribution
brew install wewa

# Scoop
scoop bucket add ownself-app-distribution https://github.com/ownself/app-distribution
scoop install wewa

# AUR
yay -S wewa-bin
```

#### 从源码构建

```bash
git clone https://github.com/ownself/wewa.git
cd wewa

# Linux 依赖（Debian/Ubuntu 系）
sudo apt install libgtk-3-dev libwebkit2gtk-4.1-dev libgtk-layer-shell-dev

cargo build --release
# 二进制文件：target/release/wewa(.exe)
```

### 使用方法

```bash
# 将 URL 设为壁纸（所有显示器）
wewa https://example.com/wallpaper.html

# 指定显示器（从 0 开始的索引）
wewa https://example.com --display 0

# ShaderToy（自动转换为全屏嵌入格式）
wewa "https://www.shadertoy.com/view/tlVGDt"

# 本地 ShaderToy 风格着色器
wewa ./octagrams.shader

# 降低渲染缩放以提升性能
wewa ./octagrams.shader --scale 0.5

# 不修改 shader 源码，直接放慢动画速度
wewa ./octagrams.shader --time-scale 0.5

# 加快动画速度，便于对比或调试
wewa ./octagrams.shader --time-scale 2.0

# 带 iChannel 纹理的 Shader（2D png/jpg 或 3D .bin 体积纹理）
wewa ./clouds.shader --channel0 textures/noise_rgba.png --channel1 textures/noise_grey.png --channel2 textures/noise_volume.bin

# 使用简短别名
wewa ./clouds.shader --c0 textures/noise_rgba.png --c1 textures/noise_grey.png --ts 0.5

# 使用内置着色器（无需任何文件）
wewa -b starnest

# 列出所有可用的内置着色器
wewa -b list

# 随机选取一款内置着色器
wewa -r

# 覆盖内置默认参数
wewa -b clouds -s 1.0 --ts 0.5

# 本地 HTML 文件
wewa ./my-wallpaper/index.html

# 包含 index.html 的目录
wewa ./my-wallpaper/

# 自定义 HTTP 服务器端口
wewa ./wallpaper.html --port 9000

# 停止显示器 0 上的壁纸
wewa --stop 0

# 停止所有壁纸
wewa --stopall
wewa --sa

# 详细输出
wewa --verbose https://example.com
```

### 命令行选项

| 选项 | 简写 | 描述 |
|------|------|------|
| `--builtin <NAME>` | `-b` | 使用内置着色器（`list` 查看全部） |
| `--random` | `-r` | 随机选取一款内置着色器 |
| `--display <N>` | `-d` | 指定目标显示器（从 0 开始的索引） |
| `--stop <N>` | | 停止显示器 N 上的壁纸 |
| `--stopall` | `--sa` | 停止所有运行中的壁纸 |
| `--port <PORT>` | `-p` | 本地文件 HTTP 服务器端口（默认：8080） |
| `--scale <FACTOR>` | `-s` | 渲染缩放（默认：1.0，使用 `-b` 时按内置配置） |
| `--time-scale <FACTOR>` | `--ts` | 动画时间缩放（默认：1.0，使用 `-b` 时按内置配置） |
| `--channel0 <FILE>` | `--c0` | iChannel0 纹理文件（2D 图片或 3D `.bin` 体积纹理） |
| `--channel1 <FILE>` | `--c1` | iChannel1 纹理文件 |
| `--channel2 <FILE>` | `--c2` | iChannel2 纹理文件 |
| `--channel3 <FILE>` | `--c3` | iChannel3 纹理文件 |
| `--verbose` | `-v` | 启用详细输出 |
| `--help` | `-h` | 显示帮助信息 |
| `--version` | `-V` | 显示版本信息 |

### Shader 调节

- `--scale` 用于调整本地 `.shader` 输入的渲染分辨率；值越小通常性能越好，但画面会更模糊。
- `--time-scale` 用于调整本地 `.shader` 输入注入的 `iTime` 和 `iTimeDelta` 速度。
- `--time-scale 1.0` 表示原始速度，小于 `1.0` 表示减速，大于 `1.0` 表示加速，`0` 可用于冻结时间以便调试。
- 当你只是想对比不同 shader 的动画节奏时，`--time-scale` 可以避免逐个修改 shader 源码。

### iChannel 纹理

许多 ShaderToy 着色器通过 `iChannel0`–`iChannel3` 读取噪声、照片或其他数据。你可以通过本地文件提供这些纹理：

- **2D 纹理** — 任意图片格式（`.png`、`.jpg` 等）→ 声明为 `sampler2D`
- **3D 体积纹理** — ShaderToy `.bin` 格式（文件头：4 字节签名 + 宽/高/深/通道数，后接 uint8 原始数据）→ 声明为 `sampler3D`

文件扩展名决定类型：`.bin` = 3D 体积纹理，其他 = 2D 纹理。

未提供的通道会自动声明。如果以 `sampler2D` 编译失败，引擎会自动重试 `sampler3D`——因此大多数着色器无需任何 `--channel` 参数即可运行，只是未绑定的纹理读取结果为黑色。

要查看某个 ShaderToy 着色器的 iChannel 配置，在浏览器中打开该着色器页面，在开发者工具（F12）控制台中执行：

然后在浏览器中从 `https://www.shadertoy.com<src路径>` 下载对应的纹理文件。

### 内置着色器

程序内嵌了 37 款精选着色器及其所需纹理，无需任何外部文件即可使用：

```bash
wewa -b list        # 查看所有可用名称
wewa -b starnest    # 直接使用
```

每款内置着色器都有预调的 `scale` 和 `time_scale` 默认值（配置在 `builtins.json` 中），针对桌面壁纸场景优化。你可以通过命令行参数覆盖任意默认值：

```bash
wewa -b clouds -s 1.0 --ts 0.5
```

### 致谢

内置着色器来源于 [ShaderToy](https://www.shadertoy.com)。感谢才华横溢的着色器艺术家们创作并分享了这些精彩的作品：

| 着色器 | 作者 | ShaderToy |
|--------|------|-----------|
| 2dclouds | drift | [4tdSWr](https://www.shadertoy.com/view/4tdSWr) |
| accretion | Xor | [WcKXDV](https://www.shadertoy.com/view/WcKXDV) |
| ascend | bug | [33KBDm](https://www.shadertoy.com/view/33KBDm) |
| auroras | nimitz | [XtGGRt](https://www.shadertoy.com/view/XtGGRt) |
| chillywave | Tornax07 | [3XSBDW](https://www.shadertoy.com/view/3XSBDW) |
| chillywave2 | Tornax07 | [NflGRM](https://www.shadertoy.com/view/NflGRM) |
| classic4colors | zosxavius | [W3K3zy](https://www.shadertoy.com/view/W3K3zy) |
| clouds | iq | [XslGRr](https://www.shadertoy.com/view/XslGRr) |
| crumpledwave | nasana | [3ttSzr](https://www.shadertoy.com/view/3ttSzr) |
| darktransit | diatribes | [WcdczB](https://www.shadertoy.com/view/WcdczB) |
| forknixietubeclock | picoplanetdev | [Dds3WB](https://www.shadertoy.com/view/Dds3WB) |
| hexagonalgrid | iq | [WtSfWK](https://www.shadertoy.com/view/WtSfWK) |
| hexneonlove | tutmann | [3tKSWV](https://www.shadertoy.com/view/3tKSWV) |
| hieroglyphs | nayk | [Nff3Ds](https://www.shadertoy.com/view/Nff3Ds) |
| iceandfire | mattz | [MdfBzl](https://www.shadertoy.com/view/MdfBzl) |
| linuxwallpaper | movAX13h | [4dcGRn](https://www.shadertoy.com/view/4dcGRn) |
| mandelbrot | JennySchub | [NlcSRj](https://www.shadertoy.com/view/NlcSRj) |
| montereywannabe | mrange | [NdVfzK](https://www.shadertoy.com/view/NdVfzK) |
| patternminimax | PAEz | [sfS3Dz](https://www.shadertoy.com/view/sfS3Dz) |
| pinkvoid | iVader | [ddKXWh](https://www.shadertoy.com/view/ddKXWh) |
| plasma | Xor | [WfS3Dd](https://www.shadertoy.com/view/WfS3Dd) |
| plasmawaves | scarletshark | [ltXczj](https://www.shadertoy.com/view/ltXczj) |
| polyhedrons | yli110 | [sc2GzW](https://www.shadertoy.com/view/sc2GzW) |
| proteanclouds | nimitz | [3l23Rh](https://www.shadertoy.com/view/3l23Rh) |
| ps3xmb | llmciv | [fcf3Dn](https://www.shadertoy.com/view/fcf3Dn) |
| seventymelt | tomorrowevening | [XsX3zl](https://www.shadertoy.com/view/XsX3zl) |
| singularity | Xor | [3csSWB](https://www.shadertoy.com/view/3csSWB) |
| spiralgalaxy | mrange | [wsBBWD](https://www.shadertoy.com/view/wsBBWD) |
| starnest | Kali | [XlfGRj](https://www.shadertoy.com/view/XlfGRj) |
| starshipreentry | negentrope | [XX3fDH](https://www.shadertoy.com/view/XX3fDH) |
| synthwavecanyon | mrange | [slcXW8](https://www.shadertoy.com/view/slcXW8) |
| tilewarppt3 | byt3_m3chanic | [sff3RB](https://www.shadertoy.com/view/sff3RB) |
| tumblerock | diatribes | [NcjGDh](https://www.shadertoy.com/view/NcjGDh) |
| undulatingurchin | ChunderFPV | [332XWd](https://www.shadertoy.com/view/332XWd) |
| voronoigradient | gls9102 | [WdlyRS](https://www.shadertoy.com/view/WdlyRS) |
| wadongmo759 | dongmo | [fd3fD2](https://www.shadertoy.com/view/fd3fD2) |
| waveymc | feresr | [NtKGWw](https://www.shadertoy.com/view/NtKGWw) |

### 故障排除

- **WebView2 不可用 (Windows)** — 从 [Microsoft](https://developer.microsoft.com/microsoft-edge/webview2/) 安装
- **Layer-shell 不可用 (Linux)** — 确认在支持 layer-shell 的 Wayland 会话中运行（如 Hyprland、Sway、KDE 6+），并安装 `libgtk-3-dev libwebkit2gtk-4.1-dev libgtk-layer-shell-dev`
- **GNOME：提示"请注销并重新登录"** — 首次运行时 wewa 会自动安装配套的 GNOME Shell 扩展。GNOME Shell 需要重启才能加载新扩展，Wayland 下只能通过注销重新登录来重启。后续运行无需再次重启。
- **端口被占用** — 使用 `--port 9000` 指定其他端口
- **Shader 性能较差** — 对 `.shader` 输入使用 `--scale 0.5` 或 `--scale 0.75`
- **查找显示器编号** — 使用 `--verbose` 运行以查看检测到的显示器

### 项目结构

```
src/
├── main.rs           # 入口点、CLI 分发、URL 转换
├── cli.rs            # 参数解析 (clap)
├── config.rs         # 配置和实例跟踪
├── shader.rs         # Shader 文件支持、iChannel 纹理、WebGL 运行时生成
├── server.rs         # 本地 HTTP 服务器 (tiny_http)
├── ipc.rs            # 进程间通信（命名管道 / Unix Socket）
├── display.rs        # 共享显示器数据模型
├── wallpaper.rs      # 共享壁纸配置与错误类型
└── platform/
    ├── windows/      # WorkerW 技术 + WebView2
    ├── linux/        # GTK layer-shell + WebKitGTK
    └── macos/        # NSWindow 桌面层级 + WKWebView
```

### 许可证

MIT

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