+/* -*-c++-*-
+ *
+ * Copyright (C) 2007 Tim Moore
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+
#ifndef SIMGEAR_STATEATTRIBUTEFACTORY_HXX
#define SIMGEAR_STATEATTRIBUTEFACTORY_HXX 1
#include <OpenThreads/Mutex>
#include <osg/ref_ptr>
-#include <osg/AlphaFunc>
-#include <osg/BlendFunc>
-#include <osg/ShadeModel>
-#include <osg/TexEnv>
+#include <osg/Array>
+
+namespace osg
+{
+class AlphaFunc;
+class BlendFunc;
+class CullFace;
+class Depth;
+class ShadeModel;
+class Texture2D;
+class TexEnv;
+}
+
+#include <simgear/structure/Singleton.hxx>
// Return read-only instances of common OSG state attributes.
namespace simgear
{
-class StateAttributeFactory : public osg::Referenced {
+class StateAttributeFactory :
+ public ReferencedSingleton<StateAttributeFactory> {
public:
// Alpha test > .01
osg::AlphaFunc* getStandardAlphaFunc() { return _standardAlphaFunc.get(); }
osg::TexEnv* getStandardTexEnv() { return _standardTexEnv.get(); }
osg::ShadeModel* getSmoothShadeModel() { return _smooth.get(); }
osg::ShadeModel* getFlatShadeModel() { return _flat.get(); }
- static StateAttributeFactory* instance();
+ // White, repeating texture
+ osg::Texture2D* getWhiteTexture() { return _whiteTexture.get(); }
+ // White color
+ osg::Vec4Array* getWhiteColor() {return _white.get(); }
+ // A white, completely transparent texture
+ osg::Texture2D* getTransparentTexture()
+ {
+ return _transparentTexture.get();
+ }
+ // cull front and back facing polygons
+ osg::CullFace* getCullFaceFront() { return _cullFaceFront.get(); }
+ osg::CullFace* getCullFaceBack() { return _cullFaceBack.get(); }
+ // Standard depth with writes disabled.
+ osg::Depth* getDepthWritesDisabled() { return _depthWritesDisabled.get(); }
+ StateAttributeFactory();
protected:
- StateAttributeFactory();
osg::ref_ptr<osg::AlphaFunc> _standardAlphaFunc;
osg::ref_ptr<osg::ShadeModel> _smooth;
osg::ref_ptr<osg::ShadeModel> _flat;
osg::ref_ptr<osg::BlendFunc> _standardBlendFunc;
osg::ref_ptr<osg::TexEnv> _standardTexEnv;
- static osg::ref_ptr<StateAttributeFactory> _theInstance;
- static OpenThreads::Mutex _instanceMutex;
+ osg::ref_ptr<osg::Texture2D> _whiteTexture;
+ osg::ref_ptr<osg::Texture2D> _transparentTexture;
+ osg::ref_ptr<osg::Vec4Array> _white;
+ osg::ref_ptr<osg::CullFace> _cullFaceFront;
+ osg::ref_ptr<osg::CullFace> _cullFaceBack;
+ osg::ref_ptr<osg::Depth> _depthWritesDisabled;
};
}
#endif