From 17dd6ccc75a51bda913c4c3cb1f186508835af1a Mon Sep 17 00:00:00 2001
From: Hongwei Wang <hwwang@google.com>
Date: Thu, 4 May 2023 17:13:42 -0700
Subject: [PATCH] Enable dither for DismissView

It otherwise causes banding on devices with a small color palette.

Bug: 274938944
Test: Look for banding with maximum brightness and dark background
Test: Before https://screenshot.googleplex.com/8kHhVcps35MKqDj.png
Test: After https://screenshot.googleplex.com/Az5c9ykirCQpMXi.png
Change-Id: I62a10a8e9c7f2e8293b93f44d9f4d2fedfbc428a
---
 .../Shell/src/com/android/wm/shell/bubbles/DismissView.kt        | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/DismissView.kt b/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/DismissView.kt
index ab194dfb3ce96..67ecb915e0981 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/DismissView.kt
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/DismissView.kt
@@ -144,6 +144,7 @@ class DismissView(context: Context) : FrameLayout(context) {
         val gd = GradientDrawable(
                 GradientDrawable.Orientation.BOTTOM_TOP,
                 intArrayOf(gradientColorWithAlpha, Color.TRANSPARENT))
+        gd.setDither(true)
         gd.setAlpha(0)
         return gd
     }