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currentStep.type === 'Failure'
，详情可参考旺商聊官方下载
How is my data handled?，这一点在safew官方版本下载中也有详细论述
At some point I realized the scope was too large. I had spent the most time with msdfgen and hadn’t yet learned enough about the other libraries to write a proper guide. They all worked differently. I kept getting stuck. So I reduced the scope. In redesign 2 I decided to only use msdfgen, but show the various tradeoffs involved (atlas size, antialias width, shader derivatives, smoothing function).