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https://github.com/libretro/beetle-psx-libretro.git
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139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/***************************************************************************
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* Copyright (C) 2016 by iCatButler *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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/**************************************************************************
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* pgxp_value.h
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* PGXP - Parallel/Precision Geometry Xform Pipeline
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*
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* Created on: 07 Jun 2016
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* Author: iCatButler
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***************************************************************************/
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#ifndef _PGXP_VALUE_H_
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#define _PGXP_VALUE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "pgxp_types.h"
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typedef union {
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#if defined(__BIGENDIAN__)
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struct { u8 h3, h2, h, l; } b;
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struct { s8 h3, h2, h, l; } sb;
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struct { u16 h, l; } w;
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struct { s16 h, l; } sw;
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#else
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struct { u8 l, h, h2, h3; } b;
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struct { u16 l, h; } w;
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struct { s8 l, h, h2, h3; } sb;
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struct { s16 l, h; } sw;
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#endif
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u32 d;
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s32 sd;
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} psx_value;
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typedef struct PGXP_value_Tag
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{
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float x;
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float y;
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float z;
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union
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{
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unsigned int flags;
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unsigned char compFlags[4];
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unsigned short halfFlags[2];
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};
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unsigned int count;
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unsigned int value;
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unsigned short gFlags;
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unsigned char lFlags;
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unsigned char hFlags;
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} PGXP_value;
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typedef enum
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{
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UNINITIALISED = 0,
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INVALID_PSX_VALUE = 1,
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INVALID_ADDRESS = 2,
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INVALID_BITWISE_OP = 3,
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DIVIDE_BY_ZERO = 4,
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INVALID_8BIT_LOAD = 5,
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INVALID_8BIT_STORE = 6
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} PGXP_error_states;
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typedef enum
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{
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VALID_HALF = (1 << 0)
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} PGXP_half_flags;
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//typedef enum
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//{
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#define NONE 0
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#define ALL 0xFFFFFFFF
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#define VALID 1
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#define VALID_0 (VALID << 0)
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#define VALID_1 (VALID << 8)
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#define VALID_2 (VALID << 16)
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#define VALID_3 (VALID << 24)
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#define VALID_01 (VALID_0 | VALID_1)
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#define VALID_012 (VALID_0 | VALID_1 | VALID_2)
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#define VALID_ALL (VALID_0 | VALID_1 | VALID_2 | VALID_3)
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#define INV_VALID_ALL (ALL ^ VALID_ALL)
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//} PGXP_value_flags;
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static const PGXP_value PGXP_value_invalid_address = { 0.f, 0.f, 0.f, {0}, 0, 0, INVALID_ADDRESS, 0, 0 };
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static const PGXP_value PGXP_value_zero = { 0.f, 0.f, 0.f, {0}, 0, VALID_ALL, 0, 0, 0 };
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void SetValue(PGXP_value *pV, u32 psxV);
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void MakeValid(PGXP_value *pV, u32 psxV);
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void Validate(PGXP_value *pV, u32 psxV);
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void MaskValidate(PGXP_value *pV, u32 psxV, u32 mask, u32 validMask);
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u32 ValueToTolerance(PGXP_value *pV, u32 psxV, float tolerance);
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double f16Sign(double in);
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double f16Unsign(double in);
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double fu16Trunc(double in);
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double f16Overflow(double in);
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typedef union
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{
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struct
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{
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s16 x;
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s16 y;
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};
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struct
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{
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u16 ux;
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u16 uy;
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};
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u32 word;
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} low_value;
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#ifdef __cplusplus
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}
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#endif
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#endif//_PGX_VALUE_H_
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