From Marco Jez, added example that uses FBO extension to do prerendering.

2005-06-09 11:08:37 +00:00
parent 96eb0b71c6
commit 5c86ecebe4
12 changed files with 894 additions and 0 deletions
--- a/examples/osgfbo/FramebufferObject.h
+++ b/examples/osgfbo/FramebufferObject.h
@@ -0,0 +1,73 @@
+#ifndef OSG_FRAMEBUFFEROBJECT
+#define OSG_FRAMEBUFFEROBJECT 1
+
+#include <osg/Texture>
+#include <osg/buffered_value>
+
+#include "FramebufferAttachment.h"
+
+namespace osg
+{
+
+    class FramebufferObject: public StateAttribute
+    {
+    public:
+        typedef std::map<GLenum, FramebufferAttachment> AttachmentMap;
+
+        FramebufferObject();
+        FramebufferObject(const FramebufferObject &copy, const CopyOp &copyop = CopyOp::SHALLOW_COPY);
+
+        META_StateAttribute(osg, FramebufferObject, (StateAttribute::Type)0x101010/*FRAMEBUFFEROBJECT*/);
+
+        inline const AttachmentMap &getAttachmentMap() const;
+        inline bool hasAttachment(GLenum attachment_point) const;
+        inline const FramebufferAttachment& getAttachment(GLenum attachment_point) const;
+        inline void setAttachment(GLenum attachment_point, const FramebufferAttachment &attachment);
+
+        int compare(const StateAttribute &sa) const;
+        void apply(State &state) const;
+
+    protected:
+        virtual ~FramebufferObject() {}
+        FramebufferObject &operator=(const FramebufferObject &) { return *this; }
+
+        inline void dirtyAll();
+
+    private:        
+        AttachmentMap _attachments;
+        mutable buffered_value<int> _dirtyAttachmentList;
+        mutable buffered_value<int> _unsupported;
+        mutable buffered_value<GLuint> _fboID;
+    };
+
+    // INLINE METHODS
+
+    inline const FramebufferObject::AttachmentMap &FramebufferObject::getAttachmentMap() const
+    {
+        return _attachments;
+    }
+
+    inline bool FramebufferObject::hasAttachment(GLenum attachment_point) const
+    {
+        return _attachments.find(attachment_point) != _attachments.end();
+    }
+
+    inline const FramebufferAttachment &FramebufferObject::getAttachment(GLenum attachment_point) const
+    {
+        return _attachments.find(attachment_point)->second;
+    }
+
+    inline void FramebufferObject::setAttachment(GLenum attachment_point, const FramebufferAttachment &attachment)
+    {
+        _attachments[attachment_point] = attachment;
+        dirtyAll();
+    }
+
+    inline void FramebufferObject::dirtyAll()
+    {
+        _dirtyAttachmentList.setAllElementsTo(1);
+    }
+
+}
+
+#endif