From 903f426bb9843cd2b4f7d1349c7f36beaf21b00f Mon Sep 17 00:00:00 2001
From: Dean Lee <deanlee3@gmail.com>
Date: Fri, 27 Jun 2025 06:13:52 +0800
Subject: [PATCH] ui: fix shader polygon artifacts on device (#35568)

fix shader polygon artifacts on device
---
 system/ui/lib/shader_polygon.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/system/ui/lib/shader_polygon.py b/system/ui/lib/shader_polygon.py
index a045c68630..cfde81c554 100644
--- a/system/ui/lib/shader_polygon.py
+++ b/system/ui/lib/shader_polygon.py
@@ -7,7 +7,7 @@ MAX_GRADIENT_COLORS = 15
 
 VERSION = """
 #version 300 es
-precision mediump float;
+precision highp float;
 """
 if platform.system() == "Darwin":
   VERSION = """
@@ -112,7 +112,7 @@ void main() {
     vec4 color = useGradient == 1 ? getGradientColor(pixel) : fillColor;
     finalColor = vec4(color.rgb, color.a * alpha);
   } else {
-    finalColor = vec4(0.0);
+    discard;
   }
 }
 """