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// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
#ifndef D3D9_WPF_RENDERER_H
#define D3D9_WPF_RENDERER_H
#include "D3D9Renderer.h"

namespace SampleRenderer
{
	class WPFRendererListener
	{
	protected:
		virtual ~WPFRendererListener(){}
	public:

		virtual void beforeSurfaceRelease( IDirect3DSurface9* surface ) = 0;
		virtual void afterSurfaceCreated( IDirect3DSurface9* surface ) = 0;
		virtual void release() = 0;
	};

	//This renderer has special interop needs with WFP so it needs to use a slightly slowing
	//device specification.  Also it uses some special creation mechanisms so we get as much
	//performance as we can on various platforms taking the interop considerations into account.

	//One component is that SamplePlatform isn't initialized nor available thus forcing us to override
	//details on some functions
	class D3D9WPFRenderer : public D3D9Renderer
	{
		HWND					mHwnd;
		IDirect3DSurface9*		mCanonicalSurface;
		PxU32					mDesiredWidth;
		PxU32					mDesiredHeight;
		const bool				mLockable;
		WPFRendererListener*	mListener;

	protected:
		
		D3D9WPFRenderer(	HWND hWnd
							, IDirect3D9*	inDirect3d
							, IDirect3DDevice9* inDevice
							, const char* devName
							, PxU32 dispWidth
							, PxU32 dispHeight
							, const char* assetDir
							, bool lockable
							, bool isDeviceEx );

	public:
		static D3D9WPFRenderer* createWPFRenderer(const char* inAssetDir, PxU32 initialWidth = 1024, PxU32 initialHeight = 768 );

		virtual ~D3D9WPFRenderer();

		virtual IDirect3DSurface9* getSurface() { return mCanonicalSurface; }
		virtual WPFRendererListener* getListener();
		virtual void setListener( WPFRendererListener* listener );

		virtual void onResize( PxU32 newWidth, PxU32 newHeight );
		virtual bool swapBuffers();
		virtual bool isOk() const;
		virtual void onDeviceLost();
		virtual void onDeviceReset();

		virtual PxU32 getWidth() { return mDesiredWidth; }
		virtual PxU32 getHeight() { return mDesiredHeight; }
		virtual void render() { beginRender(); endRender(); }
		virtual void setupAlphaBlendState();
		virtual void restoreAlphaBlendState();
		virtual void disableZWrite();
		virtual void enableZWrite();
	protected:
		virtual bool checkResize( bool isDeviceLost );
		void releaseSurface();
		void allocateSurface();
	};
}

#endif