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Perform texture atlas warm up in an idle callback

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Part of #4103
This commit is contained in:
Daniel Imms
2022-09-22 13:06:08 -07:00
parent 1ceec0b6fa
commit 78128762f9
1 changed files with 7 additions and 3 deletions
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addons/xterm-addon-webgl/src/atlas/WebglCharAtlas.ts
+7 -3
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@@ -121,7 +121,9 @@ export class WebglCharAtlas implements IDisposable {
public warmUp(): void {
if (!this._didWarmUp) {
this._doWarmUp();
(typeof requestIdleCallback !== 'function' ? requestIdleCallback : setTimeout)(() => {
this._doWarmUp();
});
this._didWarmUp = true;
}
}
@@ -129,8 +131,10 @@ export class WebglCharAtlas implements IDisposable {
private _doWarmUp(): void {
// Pre-fill with ASCII 33-126
for (let i = 33; i < 126; i++) {
const rasterizedGlyph = this._drawToCache(i, DEFAULT_COLOR, DEFAULT_COLOR, DEFAULT_EXT);
this._cacheMap.set(i, DEFAULT_COLOR, DEFAULT_COLOR, DEFAULT_EXT, rasterizedGlyph);
if (!this._cacheMap.get(i, DEFAULT_COLOR, DEFAULT_COLOR, DEFAULT_EXT)) {
const rasterizedGlyph = this._drawToCache(i, DEFAULT_COLOR, DEFAULT_COLOR, DEFAULT_EXT);
this._cacheMap.set(i, DEFAULT_COLOR, DEFAULT_COLOR, DEFAULT_EXT, rasterizedGlyph);
}
}
}