From b558db3d78b9bf076a889076ef50c8122e5922f4 Mon Sep 17 00:00:00 2001
From: Seedgou <i@zczc.cz>
Date: Fri, 17 Nov 2023 15:58:30 +0800
Subject: [PATCH] if noise 0 return empty png

---
 src/utils/scan-renderer/canvas-scan/create-noise-blob.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/utils/scan-renderer/canvas-scan/create-noise-blob.ts b/src/utils/scan-renderer/canvas-scan/create-noise-blob.ts
index 361dc65d..8d12b675 100644
--- a/src/utils/scan-renderer/canvas-scan/create-noise-blob.ts
+++ b/src/utils/scan-renderer/canvas-scan/create-noise-blob.ts
@@ -13,6 +13,10 @@ export async function createNoiseBlob(
     throw new Error("Canvas context is null");
   }
 
+  if (noise === 0) {
+    return canvas.convertToBlob({ type: "image/png" });
+  }
+
   const noiseSVG = getNoiseSVG(noise);
   const noiseSVGBlob = new Blob([noiseSVG], { type: "image/svg+xml" });
   const noiseSVGURL = URL.createObjectURL(noiseSVGBlob);