BansheeEngine/CamelotD3D9Renderer/Include/CmD3D9TimerQuery.h

#pragma once

#include "CmD3D9Prerequisites.h"
#include "CmTimerQuery.h"

namespace CamelotFramework
{
	/**
	 * @copydoc TimerQuery
	 */
	class CM_D3D9_EXPORT D3D9TimerQuery : public TimerQuery
	{
	public:
		D3D9TimerQuery();
		~D3D9TimerQuery();

		/**
		 * @copydoc TimerQuery::begin
		 */
		virtual void begin();

		/**
		 * @copydoc TimerQuery::end
		 */
		virtual void end();

		/**
		 * @copydoc TimerQuery::isReady
		 */
		virtual bool isReady() const;

		/**
		 * @copydoc TimerQuery::getTimeMs
		 */
		virtual float getTimeMs();

	private:
		bool mFinalized;
		float mTimeDelta;

		IDirect3DQuery9* mBeginQuery;
		IDirect3DQuery9* mEndQuery;
		IDirect3DQuery9* mDisjointQuery;
		IDirect3DQuery9* mFreqQuery;

		virtual void finalize();
	};
}