diff --git a/locales/en/simulator.json b/locales/en/simulator.json
index 3be6cdcf..93741d2e 100644
--- a/locales/en/simulator.json
+++ b/locales/en/simulator.json
@@ -285,7 +285,8 @@
     },
     "floatColorRenderer": {
       "title": "Float Color Renderer",
-      "description": "This is an experimental feature that renders the rays with the WebGL floating-point color buffer. On most platforms, this solves the issues of inaccurate colors and brightnesses in this simulator, especially in the \"Simulate Colors\" mode (where the performance issue is also solved). However, in some situations, it may create other types of rendering artifacts, making the visual appearance worse than the default renderer. Note that ray tracing is still done on the CPU."
+      "description": "This is an experimental feature that renders the rays with the WebGL floating-point color buffer. On most platforms, this solves the issues of inaccurate colors and brightnesses in this simulator, especially in the \"Simulate Colors\" mode (where the performance issue is also solved). However, in some situations, it may create other types of rendering artifacts, making the visual appearance worse than the default renderer. Note that ray tracing is still done on the CPU.",
+      "error": "Your browser does not support the WebGL floating-point color buffer. Falling back to the default renderer."
     },
     "gridSize": {
       "title": "Grid Size"
diff --git a/locales/zh-CN/simulator.json b/locales/zh-CN/simulator.json
index ab40833e..b2717f5b 100644
--- a/locales/zh-CN/simulator.json
+++ b/locales/zh-CN/simulator.json
@@ -329,7 +329,8 @@
     },
     "floatColorRenderer": {
       "title": "浮点数色彩渲染器",
-      "description": "此为实验性功能，使用 WebGL 浮点数色彩缓冲区来渲染光线。在大多数平台上，这可以解决本模拟器中颜色与亮度不准确的问题，尤其是使用「模拟色彩」模式时（也解决该模式的效能问题）。然而，在某些情况下，它可能会产生其他类型的渲染瑕疵，使得视觉效果变得比预设渲染器差。注意光线追踪仍然是在 CPU 上进行。"
+      "description": "此为实验性功能，使用 WebGL 浮点数色彩缓冲区来渲染光线。在大多数平台上，这可以解决本模拟器中颜色与亮度不准确的问题，尤其是使用「模拟色彩」模式时（也解决该模式的效能问题）。然而，在某些情况下，它可能会产生其他类型的渲染瑕疵，使得视觉效果变得比预设渲染器差。注意光线追踪仍然是在 CPU 上进行。",
+      "error": "您的浏览器不支持 WebGL 浮点数色彩缓冲区。将回退到默认渲染器。"
     }
   },
   "statusBox": {
diff --git a/locales/zh-TW/simulator.json b/locales/zh-TW/simulator.json
index 120c0949..946fc2aa 100644
--- a/locales/zh-TW/simulator.json
+++ b/locales/zh-TW/simulator.json
@@ -329,7 +329,8 @@
     },
     "floatColorRenderer": {
       "title": "浮點數色彩渲染器",
-      "description": "此為實驗性功能，使用 WebGL 浮點數色彩緩衝區來渲染光線。在大多數平台上，這可以解決本模擬器中顏色與亮度不準確的問題，尤其是使用「模擬色彩」模式時（也解決該模式的效能問題）。然而，在某些情況下，它可能會產生其他類型的渲染瑕疵，使得視覺效果變得比預設渲染器差。注意光線追蹤仍然是在 CPU 上進行。"
+      "description": "此為實驗性功能，使用 WebGL 浮點數色彩緩衝區來渲染光線。在大多數平台上，這可以解決本模擬器中顏色與亮度不準確的問題，尤其是使用「模擬色彩」模式時（也解決該模式的效能問題）。然而，在某些情況下，它可能會產生其他類型的渲染瑕疵，使得視覺效果變得比預設渲染器差。注意光線追蹤仍然是在 CPU 上進行。",
+      "error": "您的瀏覽器不支援 WebGL 浮點數色彩緩衝區。將回退到預設渲染器。"
     }
   },
   "statusBox": {
diff --git a/src/simulator/js/app.js b/src/simulator/js/app.js
index 4d925577..4f2bfdf9 100644
--- a/src/simulator/js/app.js
+++ b/src/simulator/js/app.js
@@ -143,7 +143,8 @@ async function startApp() {
       scene.colorMode = 'linear';
     } catch (e) {
       localStorage.rayOpticsUseFloatColorRenderer = "off";
-      alert(e.toString() + ' Falling back to default renderer.' + '\n' + i18next.t('simulator:common.reloadToTakeEffect'));
+      console.log(e.toString() + ' Falling back to default renderer.');
+      alert(i18next.t('simulator:settings.floatColorRenderer.error') + '\n' + i18next.t('simulator:common.reloadToTakeEffect'));
       return;
     }
   }