source: GTP/trunk/App/Demos/Vis/CHC_revisited/RenderState.h @ 2773

#ifndef __RENDERSTATE_H
#define __RENDERSTATE_H


#include "common.h"


namespace CHCDemo 
{

/** The current render state.
*/
class RenderState
{
public:

        enum Mode
        {
                QUERY,
                RENDER
        };

        /** Constructor setting render as default state.
        */
        RenderState();
        
        ~RenderState() { Reset(); };

        /** This must be called each time before and after an occlusion test.
                Mode is one of render mode or query mode. Returns true if a state
                change was issued.
        */
        bool SetState(Mode mode);
        /** Sets the current render state.
        */
        void SetState(bool texturing, bool alphaTest);
        /** Returns wether we are in query or render mode
        */
        inline Mode GetMode() const { return mMode; }
        /** Reset the state.
        */
        void Reset();
        /** Stores the current vbo id.
        */
        inline void SetCurrentVboId(int id) { mCurrentVboId = id; }
        /** Returns the current vbo id.
        */
        inline int GetCurrentVboId() { return mCurrentVboId; }

protected:

        bool mAlphaTestEnabled;
        bool mTexturesEnabled;

        Mode mMode;

        int mCurrentVboId;
};


}

#endif // __RENDERSTATE_H