#ifndef __RENDERSTATE_H
#define __RENDERSTATE_H


#include "common.h"


namespace CHCDemoEngine 
{

/** 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; }

	void SetDepthPass(bool depthPass) { mIsDepthPass = depthPass; }
	bool IsDepthPass() { return mIsDepthPass; }

protected:

	bool mAlphaTestEnabled;
	bool mTexturesEnabled;

	Mode mMode;

	int mCurrentVboId;

	bool mIsDepthPass;
};


}

#endif // __RENDERSTATE_H