141 lines
4.3 KiB
C++
141 lines
4.3 KiB
C++
/*
|
|
* Glide64 - Glide video plugin for Nintendo 64 emulators.
|
|
* Copyright (c) 2002 Dave2001
|
|
* Copyright (c) 2003-2009 Sergey 'Gonetz' Lipski
|
|
*
|
|
* 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
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
//****************************************************************
|
|
//
|
|
// Glide64 - Glide Plugin for Nintendo 64 emulators
|
|
// Project started on December 29th, 2001
|
|
//
|
|
// Authors:
|
|
// Dave2001, original author, founded the project in 2001, left it in 2002
|
|
// Gugaman, joined the project in 2002, left it in 2002
|
|
// Sergey 'Gonetz' Lipski, joined the project in 2002, main author since fall of 2002
|
|
// Hiroshi 'KoolSmoky' Morii, joined the project in 2007
|
|
//
|
|
//****************************************************************
|
|
//
|
|
// To modify Glide64:
|
|
// * Write your name and (optional)email, commented by your work, so I know who did it, and so that you can find which parts you modified when it comes time to send it to me.
|
|
// * Do NOT send me the whole project or file that you modified. Take out your modified code sections, and tell me where to put them. If people sent the whole thing, I would have many different versions, but no idea how to combine them all.
|
|
//
|
|
//****************************************************************
|
|
|
|
#ifndef Util_H
|
|
#define Util_H
|
|
|
|
#define NOT_TMU0 0x00
|
|
#define NOT_TMU1 0x01
|
|
#define NOT_TMU2 0x02
|
|
|
|
void util_init();
|
|
|
|
int cull_tri(VERTEX **v);
|
|
void draw_tri(VERTEX **v, uint16_t linew = 0);
|
|
void do_triangle_stuff(uint16_t linew = 0, int old_interpolate = TRUE);
|
|
void do_triangle_stuff_2(uint16_t linew = 0);
|
|
void apply_shade_mods(VERTEX *v);
|
|
|
|
void update();
|
|
void update_scissor();
|
|
|
|
void set_message_combiner();
|
|
|
|
float ScaleZ(float z);
|
|
|
|
// positional and texel coordinate clipping
|
|
#define CCLIP(ux,lx,ut,lt,uc,lc) \
|
|
if (ux > lx || lx < uc || ux > lc) { rdp.tri_n += 2; return; } \
|
|
if (ux < uc) { \
|
|
float p = (uc-ux)/(lx-ux); \
|
|
ut = p*(lt-ut)+ut; \
|
|
ux = uc; \
|
|
} \
|
|
if (lx > lc) { \
|
|
float p = (lc-ux)/(lx-ux); \
|
|
lt = p*(lt-ut)+ut; \
|
|
lx = lc; \
|
|
}
|
|
|
|
#define CCLIP2(ux,lx,ut,lt,un,ln,uc,lc) \
|
|
if (ux > lx || lx < uc || ux > lc) { rdp.tri_n += 2; return; } \
|
|
if (ux < uc) { \
|
|
float p = (uc-ux)/(lx-ux); \
|
|
ut = p*(lt-ut)+ut; \
|
|
un = p*(ln-un)+un; \
|
|
ux = uc; \
|
|
} \
|
|
if (lx > lc) { \
|
|
float p = (lc-ux)/(lx-ux); \
|
|
lt = p*(lt-ut)+ut; \
|
|
ln = p*(ln-un)+un; \
|
|
lx = lc; \
|
|
}
|
|
|
|
#if defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
|
|
#include <stdlib.h>
|
|
#define bswap32(x) _byteswap_ulong(x)
|
|
#else
|
|
static inline uint32_t bswap32(uint32_t val)
|
|
{
|
|
return (((val & 0xff000000) >> 24) |
|
|
((val & 0x00ff0000) >> 8) |
|
|
((val & 0x0000ff00) << 8) |
|
|
((val & 0x000000ff) << 24));
|
|
}
|
|
#endif
|
|
|
|
#define ALOWORD(x) (*((uint16_t*)&(x))) // low word
|
|
|
|
static inline uint16_t __ROR__(uint16_t value, unsigned int count)
|
|
{
|
|
const unsigned int nbits = sizeof(uint16_t) * 8;
|
|
count %= nbits;
|
|
|
|
uint16_t low = (value << (nbits - count)) & 0xFFFF;
|
|
value >>= count;
|
|
value |= low;
|
|
return value;
|
|
}
|
|
|
|
template<class T> static inline T __ROR__(T value, unsigned int count)
|
|
{
|
|
const unsigned int nbits = sizeof(T) * 8;
|
|
count %= nbits;
|
|
|
|
T low = value << (nbits - count);
|
|
value >>= count;
|
|
value |= low;
|
|
return value;
|
|
}
|
|
|
|
// rotate left
|
|
template<class T> static T __ROL__(T value, unsigned int count)
|
|
{
|
|
const unsigned int nbits = sizeof(T) * 8;
|
|
count %= nbits;
|
|
|
|
T high = value >> (nbits - count);
|
|
value <<= count;
|
|
value |= high;
|
|
return value;
|
|
}
|
|
|
|
#endif // ifndef Util_H
|