Shifted set up of osgText related StateSet from osgText::Font into into osg::TextBase/Text to enable grater control over state required for specific Text implementations

include/osgText/Text

@@ -36,16 +36,6 @@ public:
     virtual const char* className() const { return "Text"; }
     virtual const char* libraryName() const { return "osgText"; }
 
-    virtual void setFont(Font* font=0) { setFont(osg::ref_ptr<Font>(font)); };
-
-    /** Set the Font to use to render the text.*/
-    virtual void setFont(osg::ref_ptr<Font> font);
-
-    /** Set the font, loaded from the specified front file, to use to render the text,
-      * setFont("") sets the use of the default font.
-      * See the osgText::readFontFile function for how the font file will be located. */
-    virtual void setFont(const std::string& fontfile) { TextBase::setFont(fontfile); }
-
     /**
      * Turns off writing to the depth buffer when rendering text. This only affects text
      * with no backdrop or text using the DELAYED_DEPTH_WRITES implementation, since
@@ -92,7 +82,9 @@ public:
          * buffer. But if you don't need the depth buffer updated for
          * your, this extra pass can be disabled by calling
          * enableDepthWrites(false).*/
-        DELAYED_DEPTH_WRITES
+        DELAYED_DEPTH_WRITES,
+
+        USE_SHADERS
     };
 
     /**
@@ -284,6 +276,8 @@ protected:
 
     virtual ~Text();
 
+    virtual osg::StateSet* createStateSet();
+
     Font* getActiveFont();
     const Font* getActiveFont() const;