From 99f7bfab3b2698ddc743f443ef9b2d8816ac869a Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 31 Mar 2015 15:08:13 +0000
Subject: [PATCH] Introduced Camera::resizeAttachments(int width, int height)
 to resize all the Texture and Image assigned the the Camera attachments.

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14810 16af8721-9629-0410-8352-f15c8da7e697
---
 examples/osgdistortion/osgdistortion.cpp | 20 +------
 include/osg/Camera                       |  4 ++
 src/osg/Camera.cpp                       | 73 ++++++++++++++++++++++++
 3 files changed, 78 insertions(+), 19 deletions(-)

diff --git a/examples/osgdistortion/osgdistortion.cpp b/examples/osgdistortion/osgdistortion.cpp
index b6cfe5db3..c32877d60 100644
--- a/examples/osgdistortion/osgdistortion.cpp
+++ b/examples/osgdistortion/osgdistortion.cpp
@@ -112,25 +112,7 @@ public:
     {
         camera->setViewport(0, 0, width, height);
 
-        osg::Camera::BufferAttachmentMap& cbam = camera->getBufferAttachmentMap();
-        for(osg::Camera::BufferAttachmentMap::iterator itr = cbam.begin();
-            itr != cbam.end();
-            ++itr)
-        {
-            osg::Camera::Attachment& attachment = itr->second;
-            if (attachment._texture.get())
-            {
-                osg::Texture2D* texture2D = dynamic_cast<osg::Texture2D*>(attachment._texture.get());
-                if (texture2D)
-                {
-                    OSG_NOTICE<<"Resetting Texture size"<<std::endl;
-                    texture2D->setTextureSize(width, height);
-                    texture2D->dirtyTextureObject();
-                }
-            }
-        }
-
-        camera->dirtyAttachmentMap();
+        camera->resizeAttachments(width, height);
     }
 
     virtual bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa, osg::Object* object, osg::NodeVisitor* nv)
diff --git a/include/osg/Camera b/include/osg/Camera
index b9e115636..98cb7b282 100644
--- a/include/osg/Camera
+++ b/include/osg/Camera
@@ -159,6 +159,7 @@ class OSG_EXPORT Camera : public Transform, public CullSettings
         Viewport* getViewport() { return _viewport.get(); }
 
 
+
         enum TransformOrder
         {
             PRE_MULTIPLY,
@@ -425,6 +426,9 @@ class OSG_EXPORT Camera : public Transform, public CullSettings
         /** Get the AttachmentMapModifiedCount. */
         unsigned int getAttachmentMapModifiedCount() const { return _attachmentMapModifiedCount; }
 
+        /** Resize the image and textures in the AttachementMap.*/
+        void resizeAttachments(int width, int height);
+
 
         /** Explicit control over implicit allocation of buffers when using FBO.
          Implicit buffers are automatically substituted when user have not attached such buffer.
diff --git a/src/osg/Camera.cpp b/src/osg/Camera.cpp
index 823b63aad..975ea5dee 100644
--- a/src/osg/Camera.cpp
+++ b/src/osg/Camera.cpp
@@ -12,6 +12,12 @@
 */
 #include <osg/Camera>
 #include <osg/RenderInfo>
+#include <osg/Texture1D>
+#include <osg/Texture2D>
+#include <osg/Texture3D>
+#include <osg/TextureRectangle>
+#include <osg/TextureCubeMap>
+#include <osg/Texture2DArray>
 #include <osg/Notify>
 
 using namespace osg;
@@ -408,6 +414,73 @@ void Camera::inheritCullSettings(const CullSettings& settings, unsigned int inhe
     }
 }
 
+void Camera::resizeAttachments(int width, int height)
+{
+    bool modified = false;
+    for(BufferAttachmentMap::iterator itr = _bufferAttachmentMap.begin();
+        itr != _bufferAttachmentMap.end();
+        ++itr)
+    {
+        Attachment& attachment = itr->second;
+        if (attachment._texture.valid())
+        {
+            {
+                osg::Texture1D* texture = dynamic_cast<osg::Texture1D*>(attachment._texture.get());
+                if (texture && (texture->getTextureWidth()!=width))
+                {
+                    modified = true;
+                    texture->setTextureWidth(width);
+                    texture->dirtyTextureObject();
+                }
+            }
+
+            {
+                osg::Texture2D* texture = dynamic_cast<osg::Texture2D*>(attachment._texture.get());
+                if (texture && ((texture->getTextureWidth()!=width) || (texture->getTextureHeight()!=height)))
+                {
+                    modified = true;
+                    texture->setTextureSize(width, height);
+                    texture->dirtyTextureObject();
+                }
+            }
+
+            {
+                osg::Texture3D* texture = dynamic_cast<osg::Texture3D*>(attachment._texture.get());
+                if (texture && ((texture->getTextureWidth()!=width) || (texture->getTextureHeight()!=height)))
+                {
+                    modified = true;
+                    texture->setTextureSize(width, height, texture->getTextureDepth());
+                    texture->dirtyTextureObject();
+                }
+            }
+
+            {
+                osg::Texture2DArray* texture = dynamic_cast<osg::Texture2DArray*>(attachment._texture.get());
+                if (texture && ((texture->getTextureWidth()!=width) || (texture->getTextureHeight()!=height)))
+                {
+                    modified = true;
+                    texture->setTextureSize(width, height, texture->getTextureDepth());
+                    texture->dirtyTextureObject();
+                }
+            }
+        }
+
+        if (attachment._image.valid() && (attachment._image->s()!=width || attachment._image->s()!=height) )
+        {
+            modified = true;
+            osg::Image* image = attachment._image.get();
+            image->allocateImage(width, height, image->r(),
+                                 image->getPixelFormat(), image->getDataType(),
+                                 image->getPacking());
+        }
+    }
+
+    if (modified)
+    {
+        dirtyAttachmentMap();
+    }
+}
+
 void Camera::createCameraThread()
 {
     if (!_cameraThread)