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Use willReadFrequently in 2D canvas contexts

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Updated all calls to getContext('2d') to include the { willReadFrequently: true } option. This change improves performance for frequent pixel read operations, particularly for mask and image processing tasks.
This commit is contained in:
Dariusz L
2025-07-01 07:44:14 +02:00
parent cf10322101
commit 02bac6c624
5 changed files with 23 additions and 23 deletions
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10
js/Canvas.js
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@@ -26,7 +26,7 @@ export class Canvas {
this.node = node;
this.widget = widget;
this.canvas = document.createElement('canvas');
this.ctx = this.canvas.getContext('2d');
this.ctx = this.canvas.getContext('2d', { willReadFrequently: true });
this.width = 512;
this.height = 512;
this.layers = [];
@@ -683,7 +683,7 @@ export class Canvas {
throw new Error("Old mask editor canvas not found");
}
const maskCtx = maskCanvas.getContext('2d');
const maskCtx = maskCanvas.getContext('2d', { willReadFrequently: true });
const maskColor = {r: 255, g: 255, b: 255};
const processedMask = await this.processMaskForEditor(maskData, maskCanvas.width, maskCanvas.height, maskColor);
@@ -713,7 +713,7 @@ export class Canvas {
const tempCanvas = document.createElement('canvas');
tempCanvas.width = targetWidth;
tempCanvas.height = targetHeight;
const tempCtx = tempCanvas.getContext('2d');
const tempCtx = tempCanvas.getContext('2d', { willReadFrequently: true });
tempCtx.clearRect(0, 0, targetWidth, targetHeight);
@@ -797,7 +797,7 @@ export class Canvas {
const savedCanvas = document.createElement('canvas');
savedCanvas.width = maskCanvas.width;
savedCanvas.height = maskCanvas.height;
const savedCtx = savedCanvas.getContext('2d');
const savedCtx = savedCanvas.getContext('2d', { willReadFrequently: true });
savedCtx.drawImage(maskCanvas, 0, 0);
return {
@@ -893,7 +893,7 @@ export class Canvas {
const tempCanvas = document.createElement('canvas');
tempCanvas.width = this.width;
tempCanvas.height = this.height;
const tempCtx = tempCanvas.getContext('2d');
const tempCtx = tempCanvas.getContext('2d', { willReadFrequently: true });
tempCtx.drawImage(resultImage, 0, 0, this.width, this.height);