From 8b438bf933ee9b6663f5a6e14698dad3f69d9c13 Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <aacid@kde.org>
Date: Sun, 9 Sep 2012 00:18:14 +0200
Subject: [PATCH] Qt needs the missing alpha of QImage::Format_RGB32 to be 0xff

BUGS: 306105
FIXED-IN: 4.9.2
---
 generators/spectre/rendererthread.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/generators/spectre/rendererthread.cpp b/generators/spectre/rendererthread.cpp
index f185d2277..44ebe9695 100644
--- a/generators/spectre/rendererthread.cpp
+++ b/generators/spectre/rendererthread.cpp
@@ -70,6 +70,13 @@ void GSRendererThread::run()
 
             spectre_page_render(req.spectrePage, m_renderContext, &data, &row_length);
 
+            // Qt needs the missing alpha of QImage::Format_RGB32 to be 0xff
+            if (data[3] != 0xff)
+            {
+                for (int i = 3; i < row_length * wantedHeight; i += 4)
+                    data[i] = 0xff;
+            }
+
             QImage img;
             if (row_length == wantedWidth * 4)
             {