From 8702853313d82ff29154dadc888a714c0d45e599 Mon Sep 17 00:00:00 2001
From: Allan Sandfeld Jensen <allan.jensen@qt.io>
Date: Thu, 9 Nov 2023 12:06:49 +0100
Subject: [PATCH] Fix findNearestColor for semitransparent colors

The two destcolors and the buffer are all already premultiplied. This
would double premultiply them.

Pick-to: 6.5 6.2
Change-Id: I235bee616d8e0033b87c6f96464f0926af7bd29a
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
(cherry picked from commit b637607789a9e92a0dd0ff7fb31b9a92a10ef0bf)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/gui/painting/qdrawhelper.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index 117f43db8fd..7029a0e0a3b 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -513,9 +513,8 @@ static DestFetchProcFP destFetchProcFP[QImage::NImageFormats] =
 */
 static inline QRgb findNearestColor(QRgb color, QRasterBuffer *rbuf)
 {
-    QRgb color_0 = qPremultiply(rbuf->destColor0);
-    QRgb color_1 = qPremultiply(rbuf->destColor1);
-    color = qPremultiply(color);
+    const QRgb color_0 = rbuf->destColor0;
+    const QRgb color_1 = rbuf->destColor1;
 
     int r = qRed(color);
     int g = qGreen(color);