各位Three.js的大佬们好，我现在做杯子样机项目遇到个头疼的问题，想请教下大家！我正在用Three.js实现一个杯子样机效果，通过在Canvas上叠加5个图层来完成，图层的渲染顺序如下：

• Scene：背景场景
• Mask：定义杯子的可见区域
• Color：杯子的基础色层
• Logo Image：需要叠加在杯子上的Logo图片
• Shadow/Highlight：为杯子增加深度和真实感

✅ 目前的实现方式 #

• Scene层直接正常渲染
• 对于Color和Logo Image层，我用模板缓冲区来裁剪平面，只让它们在杯子的可见区域内显示，避开透明部分

🚨 遇到的问题 #

用模板缓冲区裁剪后，裁剪平面的边缘出现了锯齿或者像素化的失真问题。
我试过用THREE.MultiplyBlending来修复这种失真，但又引入了新问题：如果Color层设置为黑色，Logo Image也会跟着变黑或者变暗，完全被底色的颜色影响。

🎯 我已经尝试过的方案 #

• 给纹理使用LinearFilter进行过滤
• 调整材质的alphaTest和premultiplyAlpha属性
• 设置材质的depthTest和depthWrite属性
• 确保Canvas分辨率和设备分辨率匹配（已经用setPixelRatio处理）

❓ 我需要大家帮忙解决的问题 #

1. 怎么在不用MultiplyBlending、不影响Logo层颜色的前提下，解决裁剪平面边缘的失真问题？
2. 有没有更好的方法，用模板缓冲区把Color和Logo层精准裁剪到杯子可见区域？

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备注：内容来源于stack exchange，提问作者Simranjit Kaur