From b9a5081490f4349598ecb833784d391dd2d43488 Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
Date: Tue, 5 Aug 2025 13:03:39 +0200
Subject: [PATCH] Fix glyph rendering: clamp coverage to [0, 1] (#7415)

* Closes  #7366
* Closes https://github.com/emilk/egui/pull/7388
---
 crates/epaint/src/image.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crates/epaint/src/image.rs b/crates/epaint/src/image.rs
index e14ea869..059d9d76 100644
--- a/crates/epaint/src/image.rs
+++ b/crates/epaint/src/image.rs
@@ -384,6 +384,7 @@ impl AlphaFromCoverage {
     /// Convert coverage to alpha.
     #[inline(always)]
     pub fn alpha_from_coverage(&self, coverage: f32) -> f32 {
+        let coverage = coverage.clamp(0.0, 1.0);
         match self {
             Self::Linear => coverage,
             Self::Gamma(gamma) => coverage.powf(*gamma),