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Merge pull request #20499 from AtiX/master

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Improves text rendering performance by skipping unnecessary pattern calculations
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calixteman 2025-12-12 17:28:22 +01:00 committed by GitHub
commit f824f38e30
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1 changed files with 16 additions and 8 deletions
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24
src/display/canvas.js
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@ -2062,7 +2062,20 @@ class CanvasGraphics {
}
let patternFillTransform, patternStrokeTransform;
if (current.patternFill) {
// Only compute pattern transforms if the text rendering mode actually
// uses fill/stroke. This avoids expensive pattern calculations each call
// when a patternFill/patternStroke is set, but unused.
const fillStrokeMode =
current.textRenderingMode & TextRenderingMode.FILL_STROKE_MASK;
const needsFill =
fillStrokeMode === TextRenderingMode.FILL ||
fillStrokeMode === TextRenderingMode.FILL_STROKE;
const needsStroke =
fillStrokeMode === TextRenderingMode.STROKE ||
fillStrokeMode === TextRenderingMode.FILL_STROKE;
if (needsFill && current.patternFill) {
ctx.save();
const pattern = current.fillColor.getPattern(
ctx,
@ -2076,7 +2089,7 @@ class CanvasGraphics {
ctx.fillStyle = pattern;
}
if (current.patternStroke) {
if (needsStroke && current.patternStroke) {
ctx.save();
const pattern = current.strokeColor.getPattern(
ctx,
@ -2093,12 +2106,7 @@ class CanvasGraphics {
let lineWidth = current.lineWidth;
const scale = current.textMatrixScale;
if (scale === 0 || lineWidth === 0) {
const fillStrokeMode =
current.textRenderingMode & TextRenderingMode.FILL_STROKE_MASK;
if (
fillStrokeMode === TextRenderingMode.STROKE ||
fillStrokeMode === TextRenderingMode.FILL_STROKE
) {
if (needsStroke) {
lineWidth = this.getSinglePixelWidth();
}
} else {