// Copyright (C) 2003-2008 Dolphin Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/

#ifndef _VERTEXLOADER_H
#define _VERTEXLOADER_H

int ComputeVertexSize(u32 components);

#include "CPStructs.h"
#include "DecodedVArray.h"
#include "DataReader.h"

#define LOADERDECL __cdecl
typedef void (LOADERDECL *TPipelineFunction)(const void*);

class VertexLoader
{
public:
	enum
	{
		NRM_ZERO = 0,
		NRM_ONE = 1,
		NRM_THREE = 3
	};

	enum {
		VB_HAS_POSMTXIDX =(1<<1),
		VB_HAS_TEXMTXIDX0=(1<<2),
		VB_HAS_TEXMTXIDX1=(1<<3),
		VB_HAS_TEXMTXIDX2=(1<<4),
		VB_HAS_TEXMTXIDX3=(1<<5),
		VB_HAS_TEXMTXIDX4=(1<<6),
		VB_HAS_TEXMTXIDX5=(1<<7),
		VB_HAS_TEXMTXIDX6=(1<<8),
		VB_HAS_TEXMTXIDX7=(1<<9),
		VB_HAS_TEXMTXIDXALL=(0xff<<2),
		//VB_HAS_POS=0, // Implied, it always has pos! don't bother testing
		VB_HAS_NRM0=(1<<10),
		VB_HAS_NRM1=(1<<11),
		VB_HAS_NRM2=(1<<12),
		VB_HAS_NRMALL=(7<<10),

		VB_HAS_COL0=(1<<13),
		VB_HAS_COL1=(1<<14),

		VB_HAS_UV0=(1<<15),
		VB_HAS_UV1=(1<<16),
		VB_HAS_UV2=(1<<17),
		VB_HAS_UV3=(1<<18),
		VB_HAS_UV4=(1<<19),
		VB_HAS_UV5=(1<<20),
		VB_HAS_UV6=(1<<21),
		VB_HAS_UV7=(1<<22),
		VB_HAS_UVALL=(0xff<<15),
		VB_HAS_UVTEXMTXSHIFT=13,
	};

private:	
	TPipelineFunction m_PipelineStates[32];
	int m_numPipelineStates;	
	int m_VertexSize;
	int m_counter;

	u32 m_components;

	UVAT_group0 m_group0;
	UVAT_group1 m_group1;
	UVAT_group2 m_group2;

	bool m_AttrDirty;
	TVtxAttr m_VtxAttr; //Decoded into easy format

	//common for all loaders
	static TVtxDesc m_VtxDesc;
	static bool m_DescDirty;

	// seup the pipeline with this vertex fmt
	void SetupColor(int num, int _iMode, int _iFormat, int _iElements);
	void SetupTexCoord(int num, int _iMode, int _iFormat, int _iElements, int _iFrac);

public:
	// constructor
	VertexLoader();
	~VertexLoader();
	// run the pipeline 
	static void SetVArray(DecodedVArray *_varray);
	void Setup();
	void PrepareRun();
	void RunVertices(int count);
	void WriteCall(TPipelineFunction func);
	int GetVertexSize(){return m_VertexSize;}

	//VtxDesc - global
	static void SetVtxDesc_Lo(u32 _iValue)
	{
		u64 old = m_VtxDesc.Hex;
		m_VtxDesc.Hex &= ~0x1FFFF; // keep the Upper bits
		m_VtxDesc.Hex |= _iValue;
		if (m_VtxDesc.Hex != old)
			m_DescDirty = true;
	};

	static void SetVtxDesc_Hi(u32 _iValue)
	{
		u64 old = m_VtxDesc.Hex;
		m_VtxDesc.Hex &= 0x1FFFF; // keep the lower 17Bits
		m_VtxDesc.Hex |= (u64)_iValue << 17;
		if (m_VtxDesc.Hex != old)
			m_DescDirty = true;
	};

	static TVtxDesc &GetVtxDesc() {return m_VtxDesc;}

	void SetVAT_group0(u32 _group0) 
	{
		if (m_group0.Hex == _group0)
			return;		
		m_AttrDirty = true;
		m_group0.Hex = _group0;

		m_VtxAttr.PosElements			= m_group0.PosElements;
		m_VtxAttr.PosFormat				= m_group0.PosFormat;
		m_VtxAttr.PosFrac				= m_group0.PosFrac;
		m_VtxAttr.NormalElements		= m_group0.NormalElements;
		m_VtxAttr.NormalFormat			= m_group0.NormalFormat;
		m_VtxAttr.color[0].Elements		= m_group0.Color0Elements;
		m_VtxAttr.color[0].Comp			= m_group0.Color0Comp;
		m_VtxAttr.color[1].Elements		= m_group0.Color1Elements;
		m_VtxAttr.color[1].Comp			= m_group0.Color1Comp;
		m_VtxAttr.texCoord[0].Elements	= m_group0.Tex0CoordElements;
		m_VtxAttr.texCoord[0].Format	= m_group0.Tex0CoordFormat;
		m_VtxAttr.texCoord[0].Frac		= m_group0.Tex0Frac;
		m_VtxAttr.ByteDequant			= m_group0.ByteDequant;
		m_VtxAttr.NormalIndex3			= m_group0.NormalIndex3;
	};

	void SetVAT_group1(u32 _group1) 
	{
		if (m_group1.Hex == _group1)
			return;		
		m_AttrDirty = true;
		m_group1.Hex = _group1;

		m_VtxAttr.texCoord[1].Elements	= m_group1.Tex1CoordElements;
		m_VtxAttr.texCoord[1].Format	= m_group1.Tex1CoordFormat;
		m_VtxAttr.texCoord[1].Frac		= m_group1.Tex1Frac;
		m_VtxAttr.texCoord[2].Elements	= m_group1.Tex2CoordElements;
		m_VtxAttr.texCoord[2].Format	= m_group1.Tex2CoordFormat;
		m_VtxAttr.texCoord[2].Frac		= m_group1.Tex2Frac;
		m_VtxAttr.texCoord[3].Elements	= m_group1.Tex3CoordElements;
		m_VtxAttr.texCoord[3].Format	= m_group1.Tex3CoordFormat;
		m_VtxAttr.texCoord[3].Frac      = m_group1.Tex3Frac;
		m_VtxAttr.texCoord[4].Elements	= m_group1.Tex4CoordElements;
		m_VtxAttr.texCoord[4].Format	= m_group1.Tex4CoordFormat;
	};									  
										  
	void SetVAT_group2(u32 _group2)		  
	{
		if (m_group2.Hex == _group2)
			return;		
		m_AttrDirty = true;
		m_group2.Hex = _group2;

		m_VtxAttr.texCoord[4].Frac		= m_group2.Tex4Frac;
		m_VtxAttr.texCoord[5].Elements	= m_group2.Tex5CoordElements;
		m_VtxAttr.texCoord[5].Format	= m_group2.Tex5CoordFormat;
		m_VtxAttr.texCoord[5].Frac		= m_group2.Tex5Frac;
		m_VtxAttr.texCoord[6].Elements	= m_group2.Tex6CoordElements;
		m_VtxAttr.texCoord[6].Format	= m_group2.Tex6CoordFormat;
		m_VtxAttr.texCoord[6].Frac		= m_group2.Tex6Frac;
		m_VtxAttr.texCoord[7].Elements	= m_group2.Tex7CoordElements;
		m_VtxAttr.texCoord[7].Format	= m_group2.Tex7CoordFormat;
		m_VtxAttr.texCoord[7].Frac		= m_group2.Tex7Frac;
	};
};										  

extern VertexLoader g_VertexLoaders[8];
extern DecodedVArray* varray;

#endif