font metrics may wrong on MacOS

[eval-exec]

UPDATE:
Screenshot of built neoemcas

Successfully opened, but fonts rendering seems a bit blurry.

Originally posted by @dezzw in #31

[eval-exec]

@dezzw Hello, could you relaunch neomacs, with RUST_LOG=debug NEOMACS_LOG=debug env vars, then upload the verbose debug log file?

[eval-exec]

@georgealbert report:
启动时设置的中英文混合等宽字体，不生效。

Ref: #22 (comment)

[eval-exec]

Confirming...

[georgealbert]

我发现只有我用的https://github.com/georgealbert/Iosevka/releases/download/v20260302.081743/IosevkaTermSS05NFM+LXGWWenKaiMonoLite-Regular.ttf 有问题，但是这个https://github.com/georgealbert/Iosevka/releases/download/v20260302.081743/PragmasevkaNFM+LXGWMonoLite-Regular.ttf
就没有问题，都是一个workflow里面一样的脚本编译出来的，奇怪了。

[dezzw]

@dezzw Hello, could you relaunch neomacs, with RUST_LOG=debug NEOMACS_LOG=debug env vars, then upload the verbose debug log file?

Sorry for the late response, I was a bit busy over the weekend and I will try to upload the verbose later today.

[eval-exec]

@georgealbert Thank your for the feedback.
Could you try latest main branch ( 6ec2444 ), with RUST_LOG=info,cosmic_text::font::system=debug,neomacs_display::backend::wgpu::glyph_atlas=debug to reproduce that issue, and provide the log file?

---

@georgealbert Please git pull again...

[georgealbert]

commit 44095fd，原来显示不正常的字体“IosevkaTermSS05 Nerd Font Mono + LXGW WenKai Mono Lite”，已经正常了。

neomacs_font.log

[dezzw]

Seems still a bit blurry on my side

command to start up

❯ RUST_LOG=debug NEOMACS_LOG=debug ./result/bin/emacs -Q > neomacs.log 2>&1

neomacs.log

Note: The latest nix files still cannot build the neomacs on my host (Mac min M2), still need some modifications/patches to make it work (at least on my host).

[georgealbert]

Seems still a bit blurry on my side

command to start up

❯ RUST_LOG=debug NEOMACS_LOG=debug ./result/bin/emacs -Q > neomacs.log 2>&1
neomacs.log

Note: The latest nix files still cannot build the neomacs on my host (Mac min M2), still need some modifications/patches to make it work (at least on my host).

我直接用源码在macOS中编译已经不需要修改或者patch了。字体看着不模糊，但是字体大小感觉比emacs大2号。

[dezzw]

都是-Q，左边是neomacs，右边是emacs-git，可能是weight太小导致看起来有重影一样的感觉？

我直接用源码在macOS中编译已经不需要修改或者patch了

您是使用的 nix build 吗，很奇怪我这里直接编译是过不了的。

[eval-exec]

@dezzw Hello, What's your display monitor's screen resolution? and, in System Settings → Displays, what scaling option is selected?

您是使用的 nix build 吗，很奇怪我这里直接编译是过不了的。

After the font render bug is fixed, let's investigate the nix build problem.

[dezzw]

It's 3440 x 1440.

I will give a try on my MacBook though.

[eval-exec]

@dezzw Could you rerun your neomacs with:

RUST_LOG=debug,cosmic_text::font::system=debug,neomacs_display::backend::wgpu::glyph_atlas=debug ./result/bin/emacs

reproduce the bad rendering bug, and upload the log file.