canvas getContext add willReadFrequently

maptalks · Nov 1, 2024 · 168b97a · 168b97a
1 parent 40fda7f
commit 168b97a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/index.js b/index.js
@@ -68,7 +68,7 @@ export class ColorIn {
         const { width, height } = this.options;
         canvas.width = width;
         canvas.height = height;
-        const ctx = canvas.getContext('2d');
+        const ctx = canvas.getContext('2d', { willReadFrequently: true });
         ctx.clearRect(0, 0, canvas.width, canvas.height);
         const gradient = ctx.createLinearGradient(0, 0, canvas.width, 0);
         const { colors, valueOffset } = this;