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+<title>Screen.blend_mode — Ludic</title>
+<meta name="description" content="Choose replace or additive pixel blending.">
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+<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
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+  <div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-screen.html">Screen — drawing</a> <span>›</span> <span class="here">Screen.blend_mode</span></div>
+  <div class="item-head">
+    <span class="kind-badge kind-method">method</span>
+    <h1 id="top">Screen.blend_mode</h1>
+  </div>
+  <code class="sig">Screen.blend_mode(mode)</code>
+  <div class="desc"><p>Selects how drawn pixels combine with the framebuffer: <code>0</code> replaces (the default), <code>1</code> adds colours channel-wise and clamps at 255. Additive blending is how you draw glows, fire, lasers, and light — stack several bright shapes and the overlaps brighten toward white. Set it back to <code>0</code> when done.</p></div>
+  
+  <div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
+  handler DrawWorld phase Render {
+    Screen.blend_mode(1)
+    Screen.fill_circle(x: 150, y: 120, radius: 30, color: Color.rgb(80, 20, 0))
+    Screen.fill_circle(x: 170, y: 120, radius: 30, color: Color.rgb(80, 20, 0))
+    Screen.blend_mode(0)
+    Screen.show()
+  }
+}</pre></div>
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