wasm_demo.html

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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>OpenSubdiv WASM Demo</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
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        .container {
            background: #f5f5f5;
            padding: 20px;
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            margin: 20px 0;
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        pre {
            background: #333;
            color: #fff;
            padding: 15px;
            border-radius: 4px;
            overflow-x: auto;
        }
        button {
            background: #007cba;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 16px;
        }
        button:hover {
            background: #005a87;
        }
        .output {
            background: white;
            border: 1px solid #ddd;
            padding: 15px;
            border-radius: 4px;
            margin-top: 10px;
        }
    </style>
</head>
<body>
    <h1>OpenSubdiv WASM Demo</h1>
    <div class="container">
        <h2>CPU-Only WebAssembly Build</h2>
        <p>This demonstrates OpenSubdiv's CPU-only subdivision algorithms running in WebAssembly.</p>
        <p>The demo creates a simple cube mesh and performs 2 levels of Catmull-Clark subdivision.</p>
        <button onclick="runSubdivision()">Run Subdivision Test</button>
        <div id="output" class="output" style="display:none;">
            <h3>Output:</h3>
            <pre id="result"></pre>
        </div>
    </div>

    <div class="container">
        <h2>Technical Details</h2>
        <ul>
            <li><strong>Library:</strong> OpenSubdiv v3.6.1</li>
            <li><strong>Build Type:</strong> CPU-only WASM build</li>
            <li><strong>Subdivision Scheme:</strong> Catmull-Clark</li>
            <li><strong>Input:</strong> 8 vertices, 6 faces (cube)</li>
            <li><strong>Refinement Levels:</strong> 2</li>
            <li><strong>Expected Output:</strong> 132 vertices, 126 faces</li>
        </ul>
    </div>

    <div class="container">
        <h2>Build Configuration</h2>
        <p>This WASM build was configured with the following CMake flags:</p>
        <pre>emcmake cmake -B wasm-cpu-build \
    -DCMAKE_BUILD_TYPE=Release \
    -DNO_EXAMPLES=1 \
    -DNO_TUTORIALS=1 \
    -DNO_REGRESSION=1 \
    -DNO_DOC=1 \
    -DNO_OPENGL=1 \
    -DNO_METAL=1 \
    -DNO_DX=1 \
    -DNO_CUDA=1 \
    -DNO_OPENCL=1 \
    -DNO_CLEW=1 \
    -DNO_OMP=1 \
    -DNO_TBB=1 \
    -DNO_PTEX=1 \
    -DNO_GLFW=1 \
    -DNO_GLEW=1 \
    -DBUILD_SHARED_LIBS=OFF \
    -S .</pre>
    </div>

    <script>
        let outputDiv = document.getElementById('output');
        let resultPre = document.getElementById('result');
        
        // Capture console output
        let capturedOutput = '';
        const originalLog = console.log;
        console.log = function(...args) {
            capturedOutput += args.join(' ') + '\n';
            originalLog.apply(console, arguments);
        };

        function runSubdivision() {
            capturedOutput = '';
            outputDiv.style.display = 'block';
            resultPre.textContent = 'Loading and running subdivision test...';
            
            // Import and run the WASM module
            import('./wasm_test.js').then(module => {
                // The module should automatically run main() and produce output
                setTimeout(() => {
                    resultPre.textContent = capturedOutput || 'Subdivision test completed successfully!';
                }, 100);
            }).catch(error => {
                resultPre.textContent = 'Error: ' + error.message;
            });
        }
    </script>
</body>
</html>