// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#pragma once

#include "Common/CommonTypes.h"
#include "VideoCommon/CPMemory.h"

class DataReader;

// Lighting

// Projection
enum : u32
{
	XF_TEXPROJ_ST  = 0,
	XF_TEXPROJ_STQ = 1
};

// Input form
enum : u32
{
	XF_TEXINPUT_AB11 = 0,
	XF_TEXINPUT_ABC1 = 1
};

// Texture generation type
enum : u32
{
	XF_TEXGEN_REGULAR       = 0,
	XF_TEXGEN_EMBOSS_MAP    = 1, // Used when bump mapping
	XF_TEXGEN_COLOR_STRGBC0 = 2,
	XF_TEXGEN_COLOR_STRGBC1 = 3
};

// Source row
enum : u32
{
	XF_SRCGEOM_INROW       = 0, // Input is abc
	XF_SRCNORMAL_INROW     = 1, // Input is abc
	XF_SRCCOLORS_INROW     = 2,
	XF_SRCBINORMAL_T_INROW = 3, // Input is abc
	XF_SRCBINORMAL_B_INROW = 4, // Input is abc
	XF_SRCTEX0_INROW       = 5,
	XF_SRCTEX1_INROW       = 6,
	XF_SRCTEX2_INROW       = 7,
	XF_SRCTEX3_INROW       = 8,
	XF_SRCTEX4_INROW       = 9,
	XF_SRCTEX5_INROW       = 10,
	XF_SRCTEX6_INROW       = 11,
	XF_SRCTEX7_INROW       = 12
};

// Control source
enum : u32
{
	GX_SRC_REG = 0,
	GX_SRC_VTX = 1
};

// Light diffuse attenuation function
enum : u32
{
	LIGHTDIF_NONE  = 0,
	LIGHTDIF_SIGN  = 1,
	LIGHTDIF_CLAMP = 2
};

// Light attenuation function
enum : u32
{
	LIGHTATTN_NONE = 0, // No attenuation
	LIGHTATTN_SPEC = 1, // Point light attenuation
	LIGHTATTN_DIR  = 2, // Directional light attenuation
	LIGHTATTN_SPOT = 3  // Spot light attenuation
};

// Projection type
enum : u32
{
	GX_PERSPECTIVE  = 0,
	GX_ORTHOGRAPHIC = 1
};

// Registers and register ranges
enum
{
	XFMEM_POSMATRICES         = 0x000,
	XFMEM_POSMATRICES_END     = 0x100,
	XFMEM_NORMALMATRICES      = 0x400,
	XFMEM_NORMALMATRICES_END  = 0x460,
	XFMEM_POSTMATRICES        = 0x500,
	XFMEM_POSTMATRICES_END    = 0x600,
	XFMEM_LIGHTS              = 0x600,
	XFMEM_LIGHTS_END          = 0x680,
	XFMEM_ERROR               = 0x1000,
	XFMEM_DIAG                = 0x1001,
	XFMEM_STATE0              = 0x1002,
	XFMEM_STATE1              = 0x1003,
	XFMEM_CLOCK               = 0x1004,
	XFMEM_CLIPDISABLE         = 0x1005,
	XFMEM_SETGPMETRIC         = 0x1006,
	XFMEM_VTXSPECS            = 0x1008,
	XFMEM_SETNUMCHAN          = 0x1009,
	XFMEM_SETCHAN0_AMBCOLOR   = 0x100a,
	XFMEM_SETCHAN1_AMBCOLOR   = 0x100b,
	XFMEM_SETCHAN0_MATCOLOR   = 0x100c,
	XFMEM_SETCHAN1_MATCOLOR   = 0x100d,
	XFMEM_SETCHAN0_COLOR      = 0x100e,
	XFMEM_SETCHAN1_COLOR      = 0x100f,
	XFMEM_SETCHAN0_ALPHA      = 0x1010,
	XFMEM_SETCHAN1_ALPHA      = 0x1011,
	XFMEM_DUALTEX             = 0x1012,
	XFMEM_SETMATRIXINDA       = 0x1018,
	XFMEM_SETMATRIXINDB       = 0x1019,
	XFMEM_SETVIEWPORT         = 0x101a,
	XFMEM_SETZSCALE           = 0x101c,
	XFMEM_SETZOFFSET          = 0x101f,
	XFMEM_SETPROJECTION       = 0x1020,
	// XFMEM_SETPROJECTIONB      = 0x1021,
	// XFMEM_SETPROJECTIONC      = 0x1022,
	// XFMEM_SETPROJECTIOND      = 0x1023,
	// XFMEM_SETPROJECTIONE      = 0x1024,
	// XFMEM_SETPROJECTIONF      = 0x1025,
	// XFMEM_SETPROJECTIONORTHO1 = 0x1026,
	// XFMEM_SETPROJECTIONORTHO2 = 0x1027,
	XFMEM_SETNUMTEXGENS       = 0x103f,
	XFMEM_SETTEXMTXINFO       = 0x1040,
	XFMEM_SETPOSMTXINFO       = 0x1050,
};

union LitChannel
{
	struct
	{
		u32 matsource      : 1;
		u32 enablelighting : 1;
		u32 lightMask0_3   : 4;
		u32 ambsource      : 1;
		u32 diffusefunc    : 2; // LIGHTDIF_X
		u32 attnfunc       : 2; // LIGHTATTN_X
		u32 lightMask4_7   : 4;
	};
	struct
	{
		u32 hex : 15;
		u32 unused : 17;
	};
	struct
	{
		u32 dummy0 : 7;
		u32 lightparams : 4;
		u32 dummy1 : 21;
	};
	unsigned int GetFullLightMask() const
	{
		return enablelighting ? (lightMask0_3 | (lightMask4_7 << 4)) : 0;
	}
};


union INVTXSPEC
{
	struct
	{
		u32 numcolors   : 2;
		u32 numnormals  : 2; // 0 - nothing, 1 - just normal, 2 - normals and binormals
		u32 numtextures : 4;
		u32 unused : 24;
	};
	u32 hex;
};

union TexMtxInfo
{
	struct
	{
		u32 unknown    : 1;
		u32 projection : 1; // XF_TEXPROJ_X
		u32 inputform  : 1; // XF_TEXINPUT_X
		u32 unknown2   : 1;
		u32 texgentype : 3; // XF_TEXGEN_X
		u32 sourcerow  : 5; // XF_SRCGEOM_X
		u32 embosssourceshift : 3; // what generated texcoord to use
		u32 embosslightshift  : 3; // light index that is used
	};
	u32 hex;
};

union PostMtxInfo
{
	struct
	{
		u32 index     : 6; // base row of dual transform matrix
		u32 unused    : 2;
		u32 normalize : 1; // normalize before send operation
	};
	u32 hex;
};

union NumColorChannel
{
	struct
	{
		u32 numColorChans : 2;
	};
	u32 hex;
};

union NumTexGen
{
	struct
	{
		u32 numTexGens : 4;
	};
	u32 hex;
};

union DualTexInfo
{
	struct
	{
		u32 enabled : 1;
	};
	u32 hex;
};



struct Light
{
	u32 useless[3];
	u8 color[4];
	float cosatt[3]; // cos attenuation
	float distatt[3]; // dist attenuation

	union
	{
		struct
		{
			float dpos[3];
			float ddir[3]; // specular lights only
		};

		struct
		{
			float sdir[3];
			float shalfangle[3]; // specular lights only
		};
	};
};

struct Viewport
{
	float wd;
	float ht;
	float zRange;
	float xOrig;
	float yOrig;
	float farZ;
};

struct Projection
{
	float rawProjection[6];
	u32 type;                      // only GX_PERSPECTIVE or GX_ORTHOGRAPHIC are allowed
};

struct XFMemory
{
	float posMatrices[256];         // 0x0000 - 0x00ff
	u32 unk0[768];                  // 0x0100 - 0x03ff
	float normalMatrices[96];       // 0x0400 - 0x045f
	u32 unk1[160];                  // 0x0460 - 0x04ff
	float postMatrices[256];        // 0x0500 - 0x05ff
	Light lights[8];                // 0x0600 - 0x067f
	u32 unk2[2432];                 // 0x0680 - 0x0fff
	u32 error;                      // 0x1000
	u32 diag;                       // 0x1001
	u32 state0;                     // 0x1002
	u32 state1;                     // 0x1003
	u32 xfClock;                    // 0x1004
	u32 clipDisable;                // 0x1005
	u32 perf0;                      // 0x1006
	u32 perf1;                      // 0x1007
	INVTXSPEC hostinfo;             // 0x1008 number of textures,colors,normals from vertex input
	NumColorChannel numChan;        // 0x1009
	u32 ambColor[2];                // 0x100a, 0x100b
	u32 matColor[2];                // 0x100c, 0x100d
	LitChannel color[2];            // 0x100e, 0x100f
	LitChannel alpha[2];            // 0x1010, 0x1011
	DualTexInfo dualTexTrans;       // 0x1012
	u32 unk3;                       // 0x1013
	u32 unk4;                       // 0x1014
	u32 unk5;                       // 0x1015
	u32 unk6;                       // 0x1016
	u32 unk7;                       // 0x1017
	TMatrixIndexA MatrixIndexA;     // 0x1018
	TMatrixIndexB MatrixIndexB;     // 0x1019
	Viewport viewport;              // 0x101a - 0x101f
	Projection projection;          // 0x1020 - 0x1026
	u32 unk8[24];                   // 0x1027 - 0x103e
	NumTexGen numTexGen;            // 0x103f
	TexMtxInfo texMtxInfo[8];       // 0x1040 - 0x1047
	u32 unk9[8];                    // 0x1048 - 0x104f
	PostMtxInfo postMtxInfo[8];     // 0x1050 - 0x1057
};


extern XFMemory xfmem;

void LoadXFReg(u32 transferSize, u32 address, DataReader src);
void LoadIndexedXF(u32 val, int array);
void PreprocessIndexedXF(u32 val, int refarray);
