白鹭(egret)发布vivo小游戏出现文本显示问题(v1041

（vivo引擎1041以上版本，文本已不会出现问题）

vivo工程中egret.vivogame.js，搜索WebGLRenderer.prototype.renderText，修改此函数。

核心部分（里面的偏移数字可以根据实际效果调节，这里是0.9）：

if (lowerVersion){
    this.canvasRenderBuffer.context.$offsetX = canvasScaleX * (-x)*0.5 + canvasScaleX * canvasScaleX*0.5;
    this.canvasRenderBuffer.context.$offsetY = canvasScaleY * (-y)*0.5 + canvasScaleY * canvasScaleY*0.5;        
}

if (lowerVersion){
    textureWidth *= canvasScaleX*0.9;
    textureHeight *= canvasScaleY*0.9;
}   

对应完整函数：

var lowerVersion = qg.getSystemInfoSync().platformVersionCode <= 1041;
WebGLRenderer.prototype.renderText = function (node, buffer) {

if (vivogame.textAtlasRenderEnable) {
    this.___renderText____(node, buffer);
    return;
}
var width = node.width - node.x;
var height = node.height - node.y;
if (width <= 0 || height <= 0 || !width || !height || node.drawData.length == 0) {
    return;
}
var canvasScaleX = egret.sys.DisplayList.$canvasScaleX;
var canvasScaleY = egret.sys.DisplayList.$canvasScaleY;
var maxTextureSize = buffer.context.$maxTextureSize;
if (width * canvasScaleX > maxTextureSize) {
    canvasScaleX *= maxTextureSize / (width * canvasScaleX);
}
if (height * canvasScaleY > maxTextureSize) {
    canvasScaleY *= maxTextureSize / (height * canvasScaleY);
}
width *= canvasScaleX;
height *= canvasScaleY;
var x = node.x * canvasScaleX;
var y = node.y * canvasScaleY;
if (node.$canvasScaleX != canvasScaleX || node.$canvasScaleY != canvasScaleY) {
    node.$canvasScaleX = canvasScaleX;
    node.$canvasScaleY = canvasScaleY;
    node.dirtyRender = true;
}
if (this.wxiOS10) {
    if (!this.canvasRenderer) {
        this.canvasRenderer = new egret.CanvasRenderer();
    }
    if (node.dirtyRender) {
        this.canvasRenderBuffer = new vivogame.CanvasRenderBuffer(width, height);
    }
}
else 
{
    if (!this.canvasRenderBuffer || !this.canvasRenderBuffer.context) {
        this.canvasRenderer = new egret.CanvasRenderer();
        this.canvasRenderBuffer = new vivogame.CanvasRenderBuffer(width, height);
    }
    else if (node.dirtyRender) {
        this.canvasRenderBuffer.resize(width, height);
    }
}
if (!this.canvasRenderBuffer.context) {
    return;
}
if (canvasScaleX != 1 || canvasScaleY != 1) {
    this.canvasRenderBuffer.context.setTransform(canvasScaleX, 0, 0, canvasScaleY, 0, 0);
}
if (x || y) {
    if (node.dirtyRender) {
        this.canvasRenderBuffer.context.setTransform(canvasScaleX, 0, 0, canvasScaleY, -x, -y);

        if (lowerVersion){
            this.canvasRenderBuffer.context.$offsetX = canvasScaleX * (-x)*0.5 + canvasScaleX * canvasScaleX*0.5;
            this.canvasRenderBuffer.context.$offsetY = canvasScaleY * (-y)*0.5 + canvasScaleY * canvasScaleY*0.5;        
        }

    }
    buffer.transform(1, 0, 0, 1, x / canvasScaleX, y / canvasScaleY);
}
else if (canvasScaleX != 1 || canvasScaleY != 1) {
    this.canvasRenderBuffer.context.setTransform(canvasScaleX, 0, 0, canvasScaleY, 0, 0);
}
if (node.dirtyRender) {
    var surface = this.canvasRenderBuffer.surface;
    this.canvasRenderer.renderText(node, this.canvasRenderBuffer.context);
    if (this.wxiOS10) {
        surface["isCanvas"] = true;
        node.$texture = surface;
    }
    else {
        var texture = node.$texture;
        if (!texture) {
            texture = buffer.context.createTexture(surface);
            node.$texture = texture;
        }
        else {
            buffer.context.updateTexture(texture, surface);
        }
    }
    node.$textureWidth = surface.width;
    node.$textureHeight = surface.height;
}

var textureWidth = node.$textureWidth;
var textureHeight = node.$textureHeight;

if (lowerVersion){
    textureWidth *= canvasScaleX*0.9;
    textureHeight *= canvasScaleY*0.9;
}

buffer.context.drawTexture(node.$texture, 0, 0, textureWidth, textureHeight, 0, 0, textureWidth / canvasScaleX, textureHeight / canvasScaleY, textureWidth, textureHeight);
if (x || y) {
    if (node.dirtyRender) {
        this.canvasRenderBuffer.context.setTransform(canvasScaleX, 0, 0, canvasScaleY, 0, 0);
    }
    buffer.transform(1, 0, 0, 1, -x / canvasScaleX, -y / canvasScaleY);
}
node.dirtyRender = false;
};