Why haven't I been able to replicate chromium's rendering of text?

[John Doe]

I used Canvas API to render text with Chrome. Then I tried to replicate Chromium's text rendering with my own Skia renderer but I just can't get it to look the same. Here's one glyph rendered comparison.

As you can see Chromium's on the right is much smoother and doesn't have blockiness.

I'm on Windows, font is here , my code is here.