texture2ddecoder-wasm/examples/cdn-example.html at main · fatal10110/texture2ddecoder-wasm · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>texture2ddecoder-wasm - CDN Example</title>
    <style>
      body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          Oxygen, Ubuntu, Cantarell, sans-serif;
        max-width: 800px;
        margin: 50px auto;
        padding: 20px;
        line-height: 1.6;
      }
      .status {
        padding: 15px;
        margin: 20px 0;
        border-radius: 8px;
        font-weight: 500;
      }
      .loading {
        background: #fff3cd;
        color: #856404;
        border: 1px solid #ffeaa7;
      }
      .success {
        background: #d4edda;
        color: #155724;
        border: 1px solid #c3e6cb;
      }
      .error {
        background: #f8d7da;
        color: #721c24;
        border: 1px solid #f5c6cb;
      }
      .info {
        background: #d1ecf1;
        color: #0c5460;
        border: 1px solid #bee5eb;
        padding: 15px;
        margin: 20px 0;
        border-radius: 8px;
      }
      pre {
        background: #f5f5f5;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
      }
      code {
        font-family: "Monaco", "Menlo", "Ubuntu Mono", monospace;
        font-size: 14px;
      }
      button {
        background: #007bff;
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        font-size: 16px;
        margin: 5px;
      }
      button:hover {
        background: #0056b3;
      }
      button:disabled {
        background: #6c757d;
        cursor: not-allowed;
      }
      #canvas {
        border: 1px solid #ddd;
        margin-top: 20px;
        max-width: 100%;
      }
    </style>
  </head>
  <body>
    <h1>🎨 texture2ddecoder-wasm - CDN Example</h1>

    <div class="info">
      <strong>📦 Loading from jsDelivr CDN</strong><br />
      No npm install required! This example loads the library directly from
      jsDelivr.
      <br /><br />
      <strong>⚠️ Important:</strong> This file must be served via HTTP server (not opened directly as <code>file://</code>).
      <br />
      Run: <code>python -m http.server 8000</code> in the examples directory, then visit
      <code>http://localhost:8000/cdn-example.html</code>
    </div>

    <div id="status" class="status loading">
      ⏳ Initializing WebAssembly module from CDN...
    </div>

    <div id="controls" style="display: none">
      <h2>Test Decoder</h2>
      <p>Select a compressed texture format to test:</p>
      <button onclick="testDecoder('bc1')">Test BC1 (DXT1)</button>
      <button onclick="testDecoder('bc3')">Test BC3 (DXT5)</button>
      <button onclick="testDecoder('etc1')">Test ETC1</button>
      <button onclick="testDecoder('astc')">Test ASTC</button>
      <button onclick="loadRealTexture()" style="background: #28a745;">
        Load Real ETC2 Image
      </button>

      <div id="result"></div>
      <canvas id="canvas" width="400" height="400"></canvas>
    </div>

    <div class="info" style="margin-top: 30px">
      <h3>💡 How This Works</h3>
      <pre><code>// Import from jsDelivr CDN
import { initialize, decode_bc1 } from
  'https://cdn.jsdelivr.net/npm/texture2ddecoder-wasm@1.2.1/dist/index.mjs';

// Point to WASM files on CDN
await initialize({
  wasmPath: 'https://cdn.jsdelivr.net/npm/texture2ddecoder-wasm@1.2.1/wasm'
});

// Now decode!
const decoded = await decode_bc1(data, width, height);</code></pre>

      <h3>🚀 Benefits</h3>
      <ul>
        <li><strong>Zero setup:</strong> No build tools or npm required</li>
        <li><strong>Fast loading:</strong> Cached globally by jsDelivr CDN</li>
        <li>
          <strong>Version pinning:</strong> Use specific versions for stability
        </li>
        <li>
          <strong>Perfect for:</strong> Demos, prototypes, and quick tests
        </li>
      </ul>

      <h3>📌 CDN URLs</h3>
      <ul>
        <li>
          Latest:
          <code
            >https://cdn.jsdelivr.net/npm/texture2ddecoder-wasm/dist/index.mjs</code
          >
        </li>
        <li>
          Specific version:
          <code
            >https://cdn.jsdelivr.net/npm/texture2ddecoder-wasm@1.2.1/dist/index.mjs</code
          >
        </li>
        <li>
          WASM files:
          <code
            >https://cdn.jsdelivr.net/npm/texture2ddecoder-wasm@1.2.1/wasm/</code
          >
        </li>
      </ul>

      <h3>🔗 Links</h3>
      <ul>
        <li>
          <a
            href="https://www.jsdelivr.com/package/npm/texture2ddecoder-wasm"
            target="_blank"
            >jsDelivr Package Page</a
          >
        </li>
        <li>
          <a
            href="https://www.npmjs.com/package/texture2ddecoder-wasm"
            target="_blank"
            >npm Package</a
          >
        </li>
        <li>
          <a
            href="https://github.com/fatal10110/texture2ddecoder-wasm"
            target="_blank"
            >GitHub Repository</a
          >
        </li>
      </ul>
    </div>

    <script type="module">
      // Import from jsDelivr CDN
      import {
        initialize,
        decode_bc1,
        decode_bc3,
        decode_etc1,
        decode_astc,
        decode_etc2a8,
      } from "https://cdn.jsdelivr.net/npm/texture2ddecoder-wasm@1.2.1/dist/index.mjs";

      const statusDiv = document.getElementById("status");
      const controlsDiv = document.getElementById("controls");
      const resultDiv = document.getElementById("result");
      const canvas = document.getElementById("canvas");
      const ctx = canvas.getContext("2d");

      let isReady = false;

      // Initialize the WASM module
      async function init() {
        try {
          // Point to WASM files on jsDelivr CDN
          await initialize({
            wasmPath:
              "https://cdn.jsdelivr.net/npm/texture2ddecoder-wasm@1.2.1/wasm",
          });

          statusDiv.className = "status success";
          statusDiv.innerHTML =
            "✅ Ready! WebAssembly module loaded from CDN successfully.";

          controlsDiv.style.display = "block";
          isReady = true;

          console.log("texture2ddecoder-wasm initialized successfully!");
        } catch (error) {
          statusDiv.className = "status error";
          statusDiv.innerHTML = `❌ Error: ${error.message}`;
          console.error("Initialization error:", error);
        }
      }

      // Load and decode real ETC2 RGBA texture file
      window.loadRealTexture = async function () {
        if (!isReady) return;

        resultDiv.innerHTML = '<p style="color: #856404;">⏳ Loading texture file...</p>';

        try {
          // Load the real ETC2 RGBA compressed image (compressed_etc2_rgba_400x400.bin)
          const response = await fetch("compressed_etc2_rgba_400x400.bin");
          if (!response.ok) {
            throw new Error(`Failed to load compressed_etc2_rgba_400x400.bin: ${response.status} ${response.statusText}`);
          }

          const arrayBuffer = await response.arrayBuffer();
          const compressedData = new Uint8Array(arrayBuffer);

          resultDiv.innerHTML = '<p style="color: #856404;">⏳ Decoding ETC2 RGBA texture...</p>';

          // Decode the 400x400 ETC2 RGBA texture
          const width = 400;
          const height = 400;
          const startTime = performance.now();

          const decoded = await decode_etc2a8(compressedData, width, height);
          const decodeTime = (performance.now() - startTime).toFixed(2);

          if (decoded) {
            // Draw decoded data to canvas
            const imageData = ctx.createImageData(width, height);

            // Convert BGRA to RGBA for canvas
            for (let i = 0; i < decoded.length; i += 4) {
              imageData.data[i] = decoded[i + 2]; // R from B
              imageData.data[i + 1] = decoded[i + 1]; // G stays
              imageData.data[i + 2] = decoded[i]; // B from R
              imageData.data[i + 3] = decoded[i + 3]; // A stays
            }

            ctx.putImageData(imageData, 0, 0);

            resultDiv.innerHTML = `
              <p style="color: #155724; font-weight: bold;">✅ Real ETC2 RGBA Image Decoded!</p>
              <p>Format: <strong>ETC2 RGBA (8-bit alpha)</strong></p>
              <p>Original format: <strong>PNG compressed as ETC2</strong></p>
              <p>Compressed size: <strong>${compressedData.length.toLocaleString()} bytes</strong></p>
              <p>Decoded size: <strong>${decoded.length.toLocaleString()} bytes (BGRA)</strong></p>
              <p>Decode time: <strong>${decodeTime}ms</strong></p>
              <p>Resolution: <strong>${width}x${height}</strong></p>
              <p style="color: #0c5460; margin-top: 10px;">📸 The decoded image is displayed in the canvas above!</p>
            `;
          } else {
            resultDiv.innerHTML =
              '<p style="color: #721c24;">❌ Decode failed (returned null)</p>';
          }
        } catch (error) {
          resultDiv.innerHTML = `<p style="color: #721c24;">❌ Error: ${error.message}</p>`;
          console.error("Decode error:", error);
        }
      };

      // Test decoder with sample data
      window.testDecoder = async function (format) {
        if (!isReady) return;

        resultDiv.innerHTML = '<p style="color: #856404;">⏳ Decoding...</p>';

        try {
          // Create sample compressed data (normally you'd load real texture data)
          const width = 512;
          const height = 512;
          const sampleData = new Uint8Array((width * height) / 2); // Approximate size

          // Fill with sample pattern
          for (let i = 0; i < sampleData.length; i++) {
            sampleData[i] = i % 256;
          }

          let decoded;
          let startTime = performance.now();

          switch (format) {
            case "bc1":
              decoded = await decode_bc1(sampleData, width, height);
              break;
            case "bc3":
              decoded = await decode_bc3(sampleData, width, height);
              break;
            case "etc1":
              decoded = await decode_etc1(sampleData, width, height);
              break;
            case "astc":
              decoded = await decode_astc(sampleData, width, height, 4, 4);
              break;
          }

          const decodeTime = (performance.now() - startTime).toFixed(2);

          if (decoded) {
            // Draw decoded data to canvas
            const imageData = ctx.createImageData(width, height);

            // Convert BGRA to RGBA for canvas
            for (let i = 0; i < decoded.length; i += 4) {
              imageData.data[i] = decoded[i + 2]; // R
              imageData.data[i + 1] = decoded[i + 1]; // G
              imageData.data[i + 2] = decoded[i]; // B
              imageData.data[i + 3] = decoded[i + 3]; // A
            }

            ctx.putImageData(imageData, 0, 0);

            resultDiv.innerHTML = `
                        <p style="color: #155724; font-weight: bold;">✅ Decode successful!</p>
                        <p>Format: <strong>${format.toUpperCase()}</strong></p>
                        <p>Output size: <strong>${decoded.length.toLocaleString()} bytes</strong></p>
                        <p>Decode time: <strong>${decodeTime}ms</strong></p>
                        <p>Resolution: <strong>${width}x${height}</strong></p>
                    `;
          } else {
            resultDiv.innerHTML =
              '<p style="color: #721c24;">❌ Decode failed (returned null)</p>';
          }
        } catch (error) {
          resultDiv.innerHTML = `<p style="color: #721c24;">❌ Error: ${error.message}</p>`;
          console.error("Decode error:", error);
        }
      };

      // Initialize on page load
      init();
    </script>
  </body>
</html>