Added new osg::TextureBase, osg::Texture1D, osg::Texture2D, and osg::Texture3D

classes, and changed osg::Texture and osg::TextureCubeMap so that they now derive
from osg::TextureBase.

src/osgPlugins/osg/Texture2D.cpp

@@ -0,0 +1,71 @@
+#include "osg/Texture2D"
+
+#include "osgDB/Registry"
+#include "osgDB/Input"
+#include "osgDB/Output"
+
+using namespace osg;
+using namespace osgDB;
+
+// forward declare functions to use later.
+bool Texture2D_readLocalData(Object& obj, Input& fr);
+bool Texture2D_writeLocalData(const Object& obj, Output& fw);
+
+bool Texture2D_matchWrapStr(const char* str,Texture2D::WrapMode& wrap);
+const char* Texture2D_getWrapStr(Texture2D::WrapMode wrap);
+bool Texture2D_matchFilterStr(const char* str,Texture2D::FilterMode& filter);
+const char* Texture2D_getFilterStr(Texture2D::FilterMode filter);
+bool Texture2D_matchInternalFormatModeStr(const char* str,Texture2D::InternalFormatMode& mode);
+const char* Texture2D_getInternalFormatModeStr(Texture2D::InternalFormatMode mode);
+bool Texture2D_matchInternalFormatStr(const char* str,int& value);
+const char* Texture2D_getInternalFormatStr(int value);
+
+// register the read and write functions with the osgDB::Registry.
+RegisterDotOsgWrapperProxy g_Texture2DProxy
+(
+    osgNew osg::Texture2D,
+    "Texture2D",
+    "Object StateAttribute Texture2D TextureBase",
+    &Texture2D_readLocalData,
+    &Texture2D_writeLocalData
+);
+
+
+bool Texture2D_readLocalData(Object& obj, Input& fr)
+{
+    bool iteratorAdvanced = false;
+
+    Texture2D& texture = static_cast<Texture2D&>(obj);
+
+    if (fr[0].matchWord("file") && fr[1].isString())
+    {
+        std::string filename = fr[1].getStr();
+        Image* image = fr.readImage(filename.c_str());
+        if (image)
+        {
+            // name will have already been set by the image plugin,
+            // but it will have absolute path, so will override it 
+            // here to keep the original name intact.
+            //image->setFileName(filename);
+            texture.setImage(image);
+        }
+        
+        fr += 2;
+        iteratorAdvanced = true;
+    }
+
+    return iteratorAdvanced;
+}
+
+
+bool Texture2D_writeLocalData(const Object& obj, Output& fw)
+{
+    const Texture2D& texture = static_cast<const Texture2D&>(obj);
+
+    if (texture.getImage() && !(texture.getImage()->getFileName().empty()))
+    {
+        fw.indent() << "file \""<<fw.getFileNameForOutput(texture.getImage()->getFileName())<<"\""<< std::endl;
+    }
+
+    return true;
+}