willReadFrequently

src/core/text-rendering/renderers/CanvasTextRenderer.ts

@@ -98,16 +98,17 @@ export class CanvasTextRenderer extends TextRenderer<CanvasTextRendererState> {
       this.canvas = document.createElement('canvas');
     }
     // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
-    let context = this.canvas.getContext('2d') as
-      | OffscreenCanvasRenderingContext2D
-      | CanvasRenderingContext2D
-      | null;
+    let context = this.canvas.getContext('2d', {
+      willReadFrequently: true,
+    }) as OffscreenCanvasRenderingContext2D | CanvasRenderingContext2D | null;
     if (!context) {
       // A browser may appear to support OffscreenCanvas but not actually support the Canvas '2d' context
       // Here we try getting the context again after falling back to an HTMLCanvasElement.
       // See: https://github.com/lightning-js/renderer/issues/26#issuecomment-1750438486
       this.canvas = document.createElement('canvas');
-      context = this.canvas.getContext('2d');
+      context = this.canvas.getContext('2d', {
+        willReadFrequently: true,
+      });
     }
     assertTruthy(context);
     this.context = context;