dolphin/Source/Core/VideoCommon/Src/CPMemory.h

// Copyright (C) 2003 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 _CPMEMORY_H
#define _CPMEMORY_H

#include "Common.h"

// Vertex array numbers
enum
{
	ARRAY_POSITION	= 0,
	ARRAY_NORMAL	= 1,
	ARRAY_COLOR     = 2,
	ARRAY_COLOR2    = 3,
	ARRAY_TEXCOORD0 = 4,
};

// Vertex components
enum
{
	NOT_PRESENT = 0,
	DIRECT = 1,
	INDEX8 = 2,
	INDEX16 = 3,
};

enum
{
	FORMAT_UBYTE		= 0,	// 2 Cmp
	FORMAT_BYTE			= 1,	// 3 Cmp
	FORMAT_USHORT		= 2,
	FORMAT_SHORT		= 3,
	FORMAT_FLOAT		= 4,
};

enum
{
	FORMAT_16B_565		= 0,	// NA
	FORMAT_24B_888		= 1,	
	FORMAT_32B_888x		= 2,
	FORMAT_16B_4444		= 3,
	FORMAT_24B_6666		= 4,
	FORMAT_32B_8888		= 5,
};

enum
{
	VAT_0_FRACBITS = 0x3e0001f0,
	VAT_1_FRACBITS = 0x07c3e1f0,
	VAT_2_FRACBITS = 0xf87c3e1f,
};

#pragma pack(4)
union TVtxDesc
{
	u64 Hex;
	struct 
	{
		// 0: not present
		// 1: present
		u32 PosMatIdx	: 1;
		u32 Tex0MatIdx 	: 1;
		u32 Tex1MatIdx 	: 1;
		u32 Tex2MatIdx 	: 1;
		u32 Tex3MatIdx 	: 1;
		u32 Tex4MatIdx 	: 1;
		u32 Tex5MatIdx 	: 1;
		u32 Tex6MatIdx 	: 1;
		u32 Tex7MatIdx 	: 1;

		// 00: not present 
		// 01: direct 
		// 10: 8 bit index 
		// 11: 16 bit index
		u32 Position	: 2;
		u32 Normal		: 2;
		u32 Color0 		: 2;
		u32 Color1 		: 2;
		u32 Tex0Coord 	: 2;
		u32 Tex1Coord 	: 2;
		u32 Tex2Coord 	: 2;
		u32 Tex3Coord 	: 2;
		u32 Tex4Coord 	: 2;
		u32 Tex5Coord 	: 2;
		u32 Tex6Coord 	: 2;
		u32 Tex7Coord 	: 2;
		u32				:31;
	};
    struct {
        u32 Hex0, Hex1;
    };
};

union UVAT_group0
{
    u32 Hex;
    struct 
    {
        // 0:8
        u32 PosElements			: 1;
        u32 PosFormat			: 3; 
        u32 PosFrac				: 5; 
        // 9:12
        u32 NormalElements		: 1; 
        u32 NormalFormat		: 3; 
        // 13:16
        u32 Color0Elements		: 1;
        u32 Color0Comp			: 3; 
        // 17:20
        u32 Color1Elements		: 1;
        u32 Color1Comp			: 3; 
        // 21:29
        u32 Tex0CoordElements	: 1;
        u32 Tex0CoordFormat		: 3;
        u32 Tex0Frac			: 5;
        // 30:31
        u32 ByteDequant			: 1;
        u32 NormalIndex3		: 1;
    };
};

union UVAT_group1
{
    u32 Hex;
    struct 
    {
        // 0:8
        u32 Tex1CoordElements	: 1;
        u32 Tex1CoordFormat		: 3;
        u32 Tex1Frac			: 5;
        // 9:17
        u32 Tex2CoordElements	: 1;
        u32 Tex2CoordFormat		: 3;
        u32 Tex2Frac			: 5;
        // 18:26
        u32 Tex3CoordElements	: 1;
        u32 Tex3CoordFormat		: 3;
        u32 Tex3Frac			: 5;
        // 27:30
        u32 Tex4CoordElements	: 1;
        u32 Tex4CoordFormat		: 3;
        // 
        u32						: 1;
    };
};

union UVAT_group2
{
    u32 Hex;
    struct 
    {
        // 0:4
        u32 Tex4Frac			: 5;
        // 5:13
        u32 Tex5CoordElements	: 1;
        u32 Tex5CoordFormat		: 3;
        u32 Tex5Frac			: 5;
        // 14:22
        u32 Tex6CoordElements	: 1;
        u32 Tex6CoordFormat		: 3;
        u32 Tex6Frac			: 5;
        // 23:31
        u32 Tex7CoordElements	: 1;
        u32 Tex7CoordFormat		: 3;
        u32 Tex7Frac			: 5;
    };
};

struct ColorAttr
{
    u8 Elements;
    u8 Comp;
};

struct TexAttr
{
    u8 Elements;
    u8 Format;
    u8 Frac;
};

struct TVtxAttr
{		
    u8 PosElements;
    u8 PosFormat; 
    u8 PosFrac; 
    u8 NormalElements;
    u8 NormalFormat; 
    ColorAttr color[2];
    TexAttr texCoord[8];
    u8 ByteDequant;
    u8 NormalIndex3;
};

// Matrix indices
union TMatrixIndexA
{
    struct
    {
        u32 PosNormalMtxIdx : 6;
        u32 Tex0MtxIdx : 6;
        u32 Tex1MtxIdx : 6;
        u32 Tex2MtxIdx : 6;
        u32 Tex3MtxIdx : 6;
    };
    struct
    {
        u32 Hex : 30;
        u32 unused : 2;
    };
};

union TMatrixIndexB
{
    struct
    {
        u32 Tex4MtxIdx : 6;
        u32 Tex5MtxIdx : 6;
        u32 Tex6MtxIdx : 6;
        u32 Tex7MtxIdx : 6;
    };
    struct
    {
        u32 Hex : 24;
        u32 unused : 8;
    };
};

#pragma pack()

extern u32 arraybases[16];
extern u8 *cached_arraybases[16];
extern u32 arraystrides[16];
extern TMatrixIndexA MatrixIndexA;
extern TMatrixIndexB MatrixIndexB;

struct VAT
{
	UVAT_group0 g0;
	UVAT_group1 g1;
	UVAT_group2 g2;
};

extern TVtxDesc g_VtxDesc;
extern VAT g_VtxAttr[8];

// Might move this into its own file later.
void LoadCPReg(u32 SubCmd, u32 Value);

// Fills memory with data from CP regs
void FillCPMemoryArray(u32 *memory);

#endif // _CPMEMORY_H