From 5240055e087c9830ec6894089dfd57b09ba982bf Mon Sep 17 00:00:00 2001
From: Kim Motoyoshi Kalland <kim.kalland@nokia.com>
Date: Mon, 6 Feb 2012 14:07:45 +0100
Subject: [PATCH] Fixed source composition with opacity in the raster paint
 engine.

Task-number: QTBUG-24075

Change-Id: I2b9263364bf30fb8c914823e80e7ea4a8af26035
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
---
 src/gui/painting/qdrawhelper.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index 6a34b5c7ca..8f2b3bab1c 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -3695,6 +3695,8 @@ static inline Operator getOperator(const QSpanData *data, const QSpan *spans, in
             // don't clear dest_fetch as it sets up the pointer correctly to save one copy
             break;
         default: {
+            if (data->type == QSpanData::Texture && data->texture.const_alpha != 256)
+                break;
             const QSpan *lastSpan = spans + spanCount;
             bool alphaSpans = false;
             while (spans < lastSpan) {