From Wojciech Lewandowski, "Reading and Writing of Texture2DArrays for IVE format."

src/osgPlugins/ive/CMakeLists.txt

@@ -112,6 +112,7 @@ SET(TARGET_SRC
     Text.cpp
     Texture1D.cpp
     Texture2D.cpp
+    Texture2DArray.cpp
     Texture3D.cpp
     Texture.cpp
     TextureCubeMap.cpp
@@ -240,6 +241,7 @@ SET(TARGET_H
     Text.h
     Texture1D.h
     Texture2D.h
+    Texture2DArray.h
     Texture3D.h
     TextureCubeMap.h
     Texture.h

src/osgPlugins/ive/DataInputStream.cpp

@@ -35,6 +35,7 @@
 #include "LineStipple.h"
 #include "Texture1D.h"
 #include "Texture2D.h"
+#include "Texture2DArray.h"
 #include "Texture3D.h"
 #include "TextureCubeMap.h"
 #include "TextureRectangle.h"
@@ -1437,6 +1438,10 @@ osg::StateAttribute* DataInputStream::readStateAttribute()
         attribute = new osg::Texture2D();
         ((ive::Texture2D*)(attribute.get()))->read(this);
     }
+    else if(attributeID == IVETEXTURE2DARRAY){
+        attribute = new osg::Texture2DArray();
+        ((ive::Texture2DArray*)(attribute.get()))->read(this);
+    }
     else if(attributeID == IVETEXTURE3D){
         attribute = new osg::Texture3D();
         ((ive::Texture3D*)(attribute.get()))->read(this);

src/osgPlugins/ive/DataOutputStream.cpp

@@ -36,6 +36,7 @@
 #include "LineStipple.h"
 #include "Texture1D.h"
 #include "Texture2D.h"
+#include "Texture2DArray.h"
 #include "Texture3D.h"
 #include "TextureCubeMap.h"
 #include "TextureRectangle.h"
@@ -1062,6 +1063,10 @@ void DataOutputStream::writeStateAttribute(const osg::StateAttribute* attribute)
         else if(dynamic_cast<const osg::Texture3D*>(attribute)){
             ((ive::Texture3D*)(attribute))->write(this);
         }
+        // This is a Texture2DArray
+        else if(dynamic_cast<const osg::Texture2DArray*>(attribute)){
+            ((ive::Texture2DArray*)(attribute))->write(this);
+        }
         // This is a TextureCubeMap
         else if(dynamic_cast<const osg::TextureCubeMap*>(attribute)){
             ((ive::TextureCubeMap*)(attribute))->write(this);

src/osgPlugins/ive/ReadWrite.h

@@ -88,6 +88,7 @@ namespace ive {
 #define IVEFOG                          0x00001133
 #define IVELINESTIPPLE                  0x00001134
 #define IVEPOLYGONSTIPPLE               0x00001135
+#define IVETEXTURE2DARRAY               0x00001136
 
 // Drawables
 #define IVEDRAWABLE                     0x00001000

src/osgPlugins/ive/Texture2DArray.cpp

@@ -0,0 +1,80 @@
+/**********************************************************************
+ *
+ *    FILE:           Texture2DArray.cpp
+ *
+ *    DESCRIPTION:    Read/Write osg::Texture2DArray in binary format to disk.
+ *
+ *    CREATED BY:     Wojtek Lewandowski based on TextureCubeMap ive support
+ *
+ *    HISTORY:        Created 12.02.2010
+ *
+ **********************************************************************/
+
+#include "Exception.h"
+#include "Texture2DArray.h"
+#include "Texture.h"
+#include "Image.h"
+
+using namespace ive;
+
+void Texture2DArray::write(DataOutputStream* out){
+    // Write Texture2DArray's identification.
+    out->writeInt(IVETEXTURE2DARRAY);
+    // If the osg class is inherited by any other class we should also write this to file.
+    osg::Texture*  tex = dynamic_cast<osg::Texture*>(this);
+    if(tex){
+        ((ive::Texture*)(tex))->write(out);
+    }
+    else
+        out_THROW_EXCEPTION("Texture2DArray::write(): Could not cast this osg::Texture2DArray to an osg::Texture.");
+    // Write Texture2DArray's properties.
+
+    // Write texture size
+    out->writeInt(getTextureWidth());
+    out->writeInt(getTextureHeight());
+    out->writeInt(getTextureDepth());
+
+    // Write number of mipmap levels
+    out->writeInt(getNumMipmapLevels());
+
+    for( int i = 0; i < getTextureDepth(); i++ )
+    {
+        out->writeImage( getImage( i ) );
+    }
+}
+
+void Texture2DArray::read(DataInputStream* in)
+{
+    // Peek on Texture2DArray's identification.
+    int id = in->peekInt();
+    if(id == IVETEXTURE2DARRAY){
+        // Read Texture2DArray's identification.
+        id = in->readInt();
+        // If the osg class is inherited by any other class we should also read this from file.
+        osg::Texture* tex = dynamic_cast<osg::Texture*>(this);
+        if(tex){
+            ((ive::Texture*)(tex))->read(in);
+        }
+        else
+            in_THROW_EXCEPTION("Texture2DArray::read(): Could not cast this osg::Texture2DArray to an osg::Texture.");
+        // Read Texture2DArray's properties
+
+        // Read texture size
+        int width = in->readInt();
+        int height = in->readInt();
+        int depth = in->readInt();
+        setTextureSize(width, height, depth);
+
+        // Read number of mipmap levels
+        setNumMipmapLevels((unsigned int)in->readInt());
+
+        for( int i = 0; i < depth; i++ )
+        {
+            setImage( i, in->readImage() );
+        }
+    }
+    else{
+        in_THROW_EXCEPTION("Texture2DArray::read(): Expected Texture2DArray identification.");
+    }
+}
+

src/osgPlugins/ive/Texture2DArray.h

@@ -0,0 +1,18 @@
+#ifndef IVE_TEXTURE2DARRAY
+#define IVE_TEXTURE2DARRAY 1
+
+#include <osg/Texture2DArray>
+#include "ReadWrite.h"
+
+namespace ive
+{
+
+class Texture2DArray : public osg::Texture2DArray, public ReadWrite 
+{
+public:
+    void write(DataOutputStream* out);
+    void read(DataInputStream* in);
+};
+}
+
+#endif