<!-- BEGIN COPY / PASTE -->
    // Example: Basic Shader Optimization Techniques
    // 1. Use lower precision types (e.g., half instead of float) where possible.
    half3 color = half3(0.5, 0.5, 0.5);

    // 2. Minimize texture lookups by combining textures or using atlases.
    half4 texColor = tex2D(_MainTex, uv);

    // 3. Simplify math operations and avoid complex functions like pow, sin, cos.
    half brightness = dot(texColor.rgb, half3(0.3, 0.59, 0.11));

    // 4. Reduce the number of shader passes and use single-pass shaders.
    // 5. Use shader variants and keywords to compile only necessary features.
    // 6. Profile and optimize using tools like Unity's Frame Debugger or Unreal's Shader Complexity view.
    <!-- END COPY / PASTE -->