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[engine] 支持烘焙和预加载文本渲染

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SmallMain 2024-12-13 16:42:37 +08:00
parent cb79ebc0c9
commit 9a8eae69d7
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1 changed files with 69 additions and 0 deletions
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69
engine/cocos2d/core/renderer/utils/label/letter-font.js
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@ -327,6 +327,22 @@ class LetterAtlases {
*/
_fontDefDictionary = new FontAtlas(null);
/**
* 所有获取过的字符集合
*/
letterCache = null;
/**
* 是否记录所有获取过的字符
*/
get enableLetterCache() {
return this._enableLetterCache;
}
set enableLetterCache(v) {
this._enableLetterCache = v;
this.letterCache = v ? {} : null;
}
_enableLetterCache = false;
constructor() {
const handler = new cc.sp.MultiHandler();
@ -336,6 +352,12 @@ class LetterAtlases {
cc.director.on(cc.Director.EVENT_BEFORE_SCENE_LAUNCH, this.beforeSceneLoad, this);
}
static init() {
if (!_shareAtlas) {
_shareAtlas = new LetterAtlases();
cc.Label._shareAtlas = _shareAtlas;
}
}
insertLetterTexture(letterTexture) {
for (const atlas of this.atlases) {
@ -428,6 +450,21 @@ class LetterAtlases {
let hash = char.charCodeAt(0) + labelInfo.hash;
let letter = this._fontDefDictionary._letterDefinitions[hash];
if (!letter) {
if (this._enableLetterCache) {
const canvas = Label._canvasPool.get();
this.letterCache[hash] = {
char,
hash: labelInfo.hash,
measure: textUtils.safeMeasureText(canvas.context, char, labelInfo.fontDesc),
fontDesc: labelInfo.fontDesc,
fontSize: labelInfo.fontSize,
margin: labelInfo.margin,
out: labelInfo.out.toHEX(),
color: labelInfo.color.toHEX(),
isOutlined: labelInfo.isOutlined,
};
Label._canvasPool.put(canvas);
}
let temp = new LetterTexture(char, labelInfo);
temp.updateRenderData();
letter = this.insertLetterTexture(temp);
@ -442,6 +479,36 @@ class LetterAtlases {
return letter;
}
cacheLetter(info) {
textUtils.applyMeasureCache({ [textUtils.computeHash(info.char, info.fontDesc)]: info.measure });
shareLabelInfo.hash = info.hash;
shareLabelInfo.fontDesc = info.fontDesc;
shareLabelInfo.margin = info.margin;
shareLabelInfo.out = cc.Color.fromHEX(cc.color(), info.out);
shareLabelInfo.fontSize = info.fontSize;
shareLabelInfo.color = cc.Color.fromHEX(cc.color(), info.color);
shareLabelInfo.isOutlined = info.isOutlined;
this.getLetterDefinitionForChar(info.char, shareLabelInfo);
}
getLetterCache() {
const arr = [];
for (const key in this.letterCache) {
const cache = this.letterCache[key];
arr.push(cache);
}
return arr;
}
applyLetterCache(data) {
for (const cache of data) {
this.cacheLetter(cache);
}
}
checkMaterialAndUpdateTexId(letter) {
@ -629,3 +696,5 @@ export default class LetterFontAssembler extends WebglBmfontAssembler {
LetterFontAssembler.prototype.floatsPerVert = 6;
LetterFontAssembler.prototype.texIdOffset = 5;
LetterFontAssembler.prototype.isMulti = true;
Label.LetterAtlases = LetterAtlases;