From 466a2e22d5722ba2222753bf9587c8b682fd4b68 Mon Sep 17 00:00:00 2001
From: localcc <kate@zed.dev>
Date: Tue, 9 Sep 2025 12:46:59 +0200
Subject: [PATCH] Improve font rendering on macOS (#37622)

Part of https://github.com/zed-industries/zed/issues/7992

Release Notes:

- N/A
---
 crates/gpui/src/platform/mac/text_system.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/crates/gpui/src/platform/mac/text_system.rs b/crates/gpui/src/platform/mac/text_system.rs
index 72a0f2e565d9937e3aaf4082b663c3e2ae6ac91d..9144b2a23a40bd527e1441cf71adcc2562c33f3c 100644
--- a/crates/gpui/src/platform/mac/text_system.rs
+++ b/crates/gpui/src/platform/mac/text_system.rs
@@ -16,7 +16,7 @@ use core_foundation::{
 use core_graphics::{
     base::{CGGlyph, kCGImageAlphaPremultipliedLast},
     color_space::CGColorSpace,
-    context::CGContext,
+    context::{CGContext, CGTextDrawingMode},
     display::CGPoint,
 };
 use core_text::{
@@ -396,6 +396,12 @@ impl MacTextSystemState {
             let subpixel_shift = params
                 .subpixel_variant
                 .map(|v| v as f32 / SUBPIXEL_VARIANTS as f32);
+            cx.set_allows_font_smoothing(true);
+            cx.set_should_smooth_fonts(true);
+            cx.set_text_drawing_mode(CGTextDrawingMode::CGTextFill);
+            cx.set_gray_fill_color(0.0, 1.0);
+            cx.set_allows_antialiasing(true);
+            cx.set_should_antialias(true);
             cx.set_allows_font_subpixel_positioning(true);
             cx.set_should_subpixel_position_fonts(true);
             cx.set_allows_font_subpixel_quantization(false);