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Do char atlas warmup via new IdleTaskQueue

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This commit is contained in:
Daniel Imms
2022-09-24 11:10:54 -07:00
parent 8b323bbf69
commit c42f290eb8
2 changed files with 51 additions and 8 deletions
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addons/xterm-addon-webgl/src/atlas/WebglCharAtlas.ts
+10 -8
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@@ -16,6 +16,7 @@ import { tryDrawCustomChar } from 'browser/renderer/CustomGlyphs';
import { excludeFromContrastRatioDemands, isPowerlineGlyph, isRestrictedPowerlineGlyph } from 'browser/renderer/RendererUtils';
import { IUnicodeService } from 'common/services/Services';
import { FourKeyMap } from 'common/MultiKeyMap';
import { IdleTaskQueue } from 'common/IdleTaskQueue';
// For debugging purposes, it can be useful to set this to a really tiny value,
// to verify that LRU eviction works.
@@ -124,20 +125,21 @@ export class WebglCharAtlas implements IDisposable {
public warmUp(): void {
if (!this._didWarmUp) {
(typeof requestIdleCallback !== 'function' ? requestIdleCallback : setTimeout)(() => {
this._doWarmUp();
});
this._doWarmUp();
this._didWarmUp = true;
}
}
private _doWarmUp(): void {
// Pre-fill with ASCII 33-126
// Pre-fill with ASCII 33-126, this is not urgent and done in idle callbacks
const queue = new IdleTaskQueue();
for (let i = 33; i < 126; i++) {
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);
}
queue.enqueue(() => {
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);
}
});
}
}