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/***************************************************************************
* Copyright (C) 2016 by iCatButler *
* *
* 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; either version 2 of the License, or *
* (at your option) any later version. *
* *
* 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 for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
/**************************************************************************
* pgxp_value.h
* PGXP - Parallel/Precision Geometry Xform Pipeline
*
* Created on: 07 Jun 2016
* Author: iCatButler
***************************************************************************/
#ifndef _PGXP_VALUE_H_
#define _PGXP_VALUE_H_
#include "psxcommon.h"
typedef union {
#if defined(__BIGENDIAN__)
struct { u8 h3, h2, h, l; } b;
struct { s8 h3, h2, h, l; } sb;
struct { u16 h, l; } w;
struct { s16 h, l; } sw;
#else
struct { u8 l, h, h2, h3; } b;
struct { u16 l, h; } w;
struct { s8 l, h, h2, h3; } sb;
struct { s16 l, h; } sw;
#endif
u32 d;
s32 sd;
} psx_value;
typedef struct PGXP_value_Tag
{
float x;
float y;
float z;
unsigned int valid;
unsigned int count;
unsigned int value;
unsigned short gFlags;
unsigned char lFlags;
unsigned char hFlags;
} PGXP_value;
typedef enum
{
UNINITIALISED = 0,
INVALID_PSX_VALUE = 1,
INVALID_ADDRESS = 2,
INVALID_BITWISE_OP = 3,
DIVIDE_BY_ZERO = 4,
INVALID_8BIT_LOAD = 5,
INVALID_8BIT_STORE = 6
} PGXP_error_states;
typedef enum
{
VALID_HALF = (1 << 0)
} PGXP_half_flags;
static const PGXP_value PGXP_value_invalid_address = { 0.f, 0.f, 0.f, 0, 0, 0, INVALID_ADDRESS, 0, 0 };
static const PGXP_value PGXP_value_zero = { 0.f, 0.f, 0.f, 0, 0, 1, 0, 0, 0 };
void MakeValid(PGXP_value *pV, u32 psxV);
void Validate(PGXP_value *pV, u32 psxV);
void MaskValidate(PGXP_value *pV, u32 psxV, u32 mask);
typedef union
{
struct
{
s16 x;
s16 y;
};
struct
{
u16 ux;
u16 uy;
};
u32 word;
} low_value;
#endif//_PGX_VALUE_H_
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