From e68110f303331df330afb6814d166af77b178e87 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 27 Feb 2009 10:50:12 +0000
Subject: [PATCH] From Atr Tevs, fixes to FBO blitting.  Merged from svn/trunk
 using:

svn merge -r 9821:9822 http://www.openscenegraph.org/svn/osg/OpenSceneGraph/trunk/src/osgUtil/RenderStage.cpp
---
 src/osgUtil/RenderStage.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/osgUtil/RenderStage.cpp b/src/osgUtil/RenderStage.cpp
index a1b2105c7..836454d21 100644
--- a/src/osgUtil/RenderStage.cpp
+++ b/src/osgUtil/RenderStage.cpp
@@ -391,8 +391,14 @@ void RenderStage::runCameraSetUp(osg::RenderInfo& renderInfo)
                         case Camera::PACKED_DEPTH_STENCIL_BUFFER:
                             internalFormat = GL_DEPTH_STENCIL_EXT;
                             break;
+
+                        // all other buffers are color buffers
                         default:
-                            internalFormat = GL_RGBA;
+                            // setup the internal format based on attached texture if such exists, otherwise just default format
+                            if (attachment._texture)
+                                internalFormat = attachment._texture->getInternalFormat();
+                            else
+                                internalFormat = GL_RGBA;
                             break;
                         }
                     }
@@ -887,6 +893,7 @@ void RenderStage::drawInner(osg::RenderInfo& renderInfo,RenderLeaf*& previous, b
         }
 
         // Bind the resolve framebuffer to blit into.
+        _fbo->apply(state, FrameBufferObject::READ_FRAMEBUFFER);
         _resolveFbo->apply(state, FrameBufferObject::DRAW_FRAMEBUFFER);
 
         // Blit to the resolve framebuffer.