Added shader defines for setting up vertex and fragment shaders with texture support

examples/osgshaderpipeline/osgshaderpipeline.cpp

@@ -11,6 +11,7 @@
 
 #include <osg/TexGen>
 #include <osgDB/ReadFile>
+#include <osgDB/WriteFile>
 
 #include <osgGA/StateSetManipulator>
 
@@ -137,8 +138,8 @@ int main(int argc, char** argv)
         }
 
         ACTIVE_TEXTURE->setElement(0, true);
-        //TEXTURE_GEN_MODE->setElement(0, 0);
-        TEXTURE_GEN_MODE->setElement(0, GL_SPHERE_MAP);
+        TEXTURE_GEN_MODE->setElement(0, 0);
+        //TEXTURE_GEN_MODE->setElement(0, GL_SPHERE_MAP);
         TEXTURE_GEN_S->setElement(0, true);
         TEXTURE_GEN_T->setElement(0, true);
 
@@ -147,8 +148,69 @@ int main(int argc, char** argv)
         stateset->addUniform(TEXTURE_GEN_T.get());
         stateset->addUniform(TEXTURE_GEN_MODE.get());
         stateset->addUniform(TEXTURE_ENV_MODE.get());
+
+
+        for(unsigned int i=0; i<maxTextureUnits;++i)
+        {
+            sstream.str("");
+            sstream<<"sampler"<<i;
+            OSG_NOTICE<<"****** texture unit : "<<sstream.str()<<std::endl;
+            stateset->addUniform(new osg::Uniform(sstream.str().c_str(), i));
+
+
+            // fragment shader texture defines
+            sstream.str("");
+            sstream<<"TEXTURE_VERT_DECLARE"<<i;
+            std::string textureVertDeclareDefine = sstream.str();
+
+            sstream.str("");
+            sstream<<"varying vec4 TexCoord"<<i<<";";
+
+            stateset->setDefine(textureVertDeclareDefine, sstream.str());
+
+
+            sstream.str("");
+            sstream<<"TEXTURE_VERT_BODY"<<i;
+            std::string textureVertBodyDefine = sstream.str();
+
+            sstream.str("");
+            sstream<<"{ TexCoord"<<i<<" = gl_MultiTexCoord"<<i<<"; }";
+
+            stateset->setDefine(textureVertBodyDefine, sstream.str());
+
+
+            // fragment shader texture defines
+            sstream.str("");
+            sstream<<"TEXTURE_FRAG_DECLARE"<<i;
+            std::string textureFragDeclareDefine = sstream.str();
+
+            sstream.str("");
+            sstream<<"uniform ";
+            sstream<<"sampler2D ";
+            sstream<<"sampler"<<i<<"; ";
+            sstream<<"varying vec4 TexCoord"<<i<<";";
+
+            stateset->setDefine(textureFragDeclareDefine, sstream.str());
+
+
+            sstream.str("");
+            sstream<<"TEXTURE_FRAG_BODY"<<i;
+            std::string textureFragBodyDefine = sstream.str();
+
+            sstream.str("");
+            sstream<<"(color) { color = texenv(color, ";
+            sstream<<"texture2D( sampler"<<i<<", TexCoord"<<i<<".st)";
+            sstream<<", "<<i<<"); }";
+
+            stateset->setDefine(textureFragBodyDefine, sstream.str());
+
+        }
+
     }
 
+    osgDB::writeObjectFile(*stateset, "stateset.osgt");
+
+
     viewer.realize();
 
     return viewer.run();

src/osgWrappers/serializers/osg/StateSet.cpp

@@ -270,6 +270,50 @@ static bool writeUniformList( osgDB::OutputStream& os, const osg::StateSet& ss )
     return true;
 }
 
+// _defineList
+static bool checkDefineList( const osg::StateSet& ss )
+{
+    return ss.getDefineList().size()>0;
+}
+
+static bool readDefineList( osgDB::InputStream& is, osg::StateSet& ss )
+{
+    unsigned int size = is.readSize(); is >> is.BEGIN_BRACKET;
+    for ( unsigned int i=0; i<size; ++i )
+    {
+        std::string defineName;
+        is.readWrappedString( defineName );
+
+        std::string defineValue;
+        is.readWrappedString( defineValue );
+
+        is >> is.PROPERTY("Value");
+        int overrideValue = readValue( is );
+
+        ss.setDefine(defineName, defineValue, overrideValue);
+
+    }
+    is >> is.END_BRACKET;
+    return true;
+}
+
+static bool writeDefineList( osgDB::OutputStream& os, const osg::StateSet& ss )
+{
+    const osg::StateSet::DefineList& df = ss.getDefineList();
+    os.writeSize(df.size()); os << os.BEGIN_BRACKET << std::endl;
+    for ( osg::StateSet::DefineList::const_iterator itr=df.begin();
+          itr!=df.end(); ++itr )
+    {
+        os.writeWrappedString(itr->first);
+        os.writeWrappedString(itr->second.first);
+        os << os.PROPERTY("Value");
+        writeValue(os, itr->second.second);
+        os << std::endl;
+    }
+    os << os.END_BRACKET << std::endl;
+    return true;
+}
+
 REGISTER_OBJECT_WRAPPER( StateSet,
                          new osg::StateSet,
                          osg::StateSet,
@@ -295,4 +339,9 @@ REGISTER_OBJECT_WRAPPER( StateSet,
     ADD_BOOL_SERIALIZER( NestRenderBins, true );  // _nestRenderBins
     ADD_OBJECT_SERIALIZER( UpdateCallback, osg::StateSet::Callback, NULL );  // _updateCallback
     ADD_OBJECT_SERIALIZER( EventCallback, osg::StateSet::Callback, NULL );  // _eventCallback
+
+    {
+        UPDATE_TO_VERSION_SCOPED( 146 )
+        ADD_USER_SERIALIZER( DefineList );  // _defineList
+    }
 }