From 9236f6daa884ddfa3c53ac157198ad5f38082520 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 25 May 2004 20:40:26 +0000
Subject: [PATCH] From George Tarantilils, add missing handling of alpha
 channel.

---
 src/osgPlugins/dds/ReaderWriterDDS.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/osgPlugins/dds/ReaderWriterDDS.cpp b/src/osgPlugins/dds/ReaderWriterDDS.cpp
index 9a9c01e7a..248988f7a 100644
--- a/src/osgPlugins/dds/ReaderWriterDDS.cpp
+++ b/src/osgPlugins/dds/ReaderWriterDDS.cpp
@@ -280,6 +280,11 @@ osg::Image* ReadDDSFile(std::istream& _istream)
             internalFormat = usingAlpha ? GL_LUMINANCE_ALPHA : GL_LUMINANCE;
             pixelFormat    = usingAlpha ? GL_LUMINANCE_ALPHA : GL_LUMINANCE;              
     }
+   else if(ddsd.ddpfPixelFormat.dwFlags & DDPF_ALPHA)
+    {
+            internalFormat = GL_ALPHA;
+            pixelFormat    = GL_ALPHA;              
+    }
     // Compressed formats
     else if(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC)
     {