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#ifndef _OCEAN_WAVE_H
#define _OCEAN_WAVE_H

#include <D3DX9.h>

#include <GFSDK_WaveWorks.h>

//#define DEBUG_VS
//#define DEBUG_PS

// Ocean grid setting
#define BICOLOR_TEX_SIZE			256

struct OceanSurfaceParameters
{
	// Shading properties
	D3DXVECTOR4 sky_color;
    D3DXVECTOR4 waterbody_color;
    float sky_blending;
};

class OceanSurface
{
public:
	OceanSurface();
	~OceanSurface();

	OceanSurfaceParameters m_params;

	HRESULT init(const OceanSurfaceParameters& params);

	// create color/fresnel lookup table.
	void createFresnelMap();

	// ---------------------------------- GPU shading data ------------------------------------

	// D3D objects
	IDirect3DDevice9* m_pd3dDevice;
	LPDIRECT3DVERTEXDECLARATION9 m_pQuadDecl;
	
	// Color look up 1D texture
	LPDIRECT3DTEXTURE9 m_pBicolorMap;			// (RGBA8)
	LPDIRECT3DCUBETEXTURE9 m_pCubeMap;
	LPDIRECT3DTEXTURE9 m_pFoamIntensityMap;
	LPDIRECT3DTEXTURE9 m_pFoamDiffuseMap;

	ID3DXEffect* m_pOceanFX;

	// --------------------------------- Rendering routines -----------------------------------

	// Rendering
	void renderShaded(const D3DXMATRIX& matView, const D3DXMATRIX& matProj, GFSDK_WaveWorks_SimulationHandle hSim, GFSDK_WaveWorks_SavestateHandle hSavestate, BOOL freeze_cam);
	void renderWireframe(const D3DXMATRIX& matView, const D3DXMATRIX& matProj, GFSDK_WaveWorks_SimulationHandle hSim, GFSDK_WaveWorks_SavestateHandle hSavestate, BOOL freeze_cam);
	void getQuadTreeStats(GFSDK_WaveWorks_Quadtree_Stats& stats);

	// --------------------------------- Surface geometry -----------------------------------
	GFSDK_WaveWorks_QuadtreeHandle m_hOceanQuadTree;
	HRESULT initQuadTree(const GFSDK_WaveWorks_Quadtree_Params& params);

	UINT* m_pQuadTreeShaderInputMappings_Shaded;
	UINT* m_pQuadTreeShaderInputMappings_Wireframe;

	UINT* m_pSimulationShaderInputMappings_Shaded;
	UINT* m_pSimulationShaderInputMappings_Wireframe;

	D3DXMATRIX m_matView;
	D3DXMATRIX m_matProj;
};

#endif	// _OCEAN_WAVE_H