From 15ca4ade9f9d8cd77979d2e0c3e57cbdea63656d Mon Sep 17 00:00:00 2001
From: Wentao Kuang <wkuang@linz.govt.nz>
Date: Thu, 5 Dec 2024 15:15:12 +1300
Subject: [PATCH] Disable fastShrinkOnLoad for the sacle lower than 0.125.

---
 packages/tiler-sharp/src/index.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/tiler-sharp/src/index.ts b/packages/tiler-sharp/src/index.ts
index 6ae79bcf1..be062ea84 100644
--- a/packages/tiler-sharp/src/index.ts
+++ b/packages/tiler-sharp/src/index.ts
@@ -144,7 +144,11 @@ export class TileMakerSharp implements TileMaker {
 
     if (resize) {
       const resizeOptions = { fit: Sharp.fit.cover, kernel: resize.scaleX > 1 ? resizeKernel.in : resizeKernel.out };
-      sharp.resize(resize.width, resize.height, resizeOptions);
+      if (resize.scale <= 0.1251) {
+        sharp.resize(resize.width, resize.height, { ...resizeOptions, fastShrinkOnLoad: false });
+      } else {
+        sharp.resize(resize.width, resize.height, resizeOptions);
+      }
     }
 
     if (crop) sharp.extract({ top: crop.y, left: crop.x, width: crop.width, height: crop.height });