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be5invis / Sarasa-Gothic

Sarasa Gothic / 更纱黑体 / 更紗黑體 / 更紗ゴシック / 사라사 고딕
SIL Open Font License 1.1
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question: font rendering speed different between sarasa-gothic-ttf-0.8.2 and the latest 0.37.4 #305

Closed asmwarrior closed 1 year ago

asmwarrior commented 2 years ago

Hi, I just test several versions of the sarasa-gothic-ttf font release under Code::Blocks IDE under Win7 64bit, which renders the font in normal GDI mode.

The sarasa-gothic-ttf-0.8.2 version(released in year 2019), such as: sarasa-mono-sc-regular.ttf, the editor renders very fast The latest release sarasa-gothic-ttf-0.37.4 with hinting version, the editor renders very slow, I can see the whole page get updated when I scroll the page. Though the un-hinted version renders fast, but the font shows badly because some lines of the font may be too trick. I choose another version such as: sarasa-gothic-ttf-0.16.5(released around year 2021), it also renders very slow.

My question is: What is the different between those release? I don't see much change logs of each release, but only a git tag about the version number.

The size of the font is also different, for example, the 0.8.2 version of sarasa-mono-sc-regular is about 34M, while the latest 0.37.4 release this same file is about 23M, so why the ttf size is smaller, but the render time get longer?

Thanks.

asmwarrior commented 2 years ago

Another question is:

in the 0.8.2 release, there are two files named sarasa-monoT-sc-regular.ttf and sarasa-mono-sc-regular.ttf. While in the latest release, there is only one file named sarasa-mono-sc-regular.ttf. So, what is the difference between mono and monoT, thanks.

github-actions[bot] commented 1 year ago

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 15 days.

asmwarrior commented 1 year ago

I think this is not stale, the issue just not get comment for about 15 days.

github-actions[bot] commented 1 year ago

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 15 days.

asmwarrior commented 1 year ago

I think this is not stale, the issue just not get comment for about several days.

github-actions[bot] commented 1 year ago

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 15 days.

asmwarrior commented 1 year ago

I think this is not stale, the issue just not get comment for about several days.

be5invis commented 1 year ago

I think one difference is that the newer versions use a more complex embedded instructions to reduce the size. As a result, it may take more time for glyphs' first rendering.

Resolve as by design.

asmwarrior commented 1 year ago

I think one difference is that the newer versions use a more complex embedded instructions to reduce the size. As a result, it may take more time for glyphs' first rendering.

Resolve as by design.

Hi, be5invis, thanks for the explanation.