143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
/*
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* Glide64 - Glide video plugin for Nintendo 64 emulators.
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* Copyright (c) 2002 Dave2001
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* Copyright (c) 2003-2009 Sergey 'Gonetz' Lipski
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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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* 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 Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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//****************************************************************
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//
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// Glide64 - Glide Plugin for Nintendo 64 emulators
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// Project started on December 29th, 2001
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//
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// Authors:
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// Dave2001, original author, founded the project in 2001, left it in 2002
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// Gugaman, joined the project in 2002, left it in 2002
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// Sergey 'Gonetz' Lipski, joined the project in 2002, main author since fall of 2002
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// Hiroshi 'KoolSmoky' Morii, joined the project in 2007
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//
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//****************************************************************
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//
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// To modify Glide64:
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// * 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.
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// * 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.
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//
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//****************************************************************
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#ifndef Util_H
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#define Util_H
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#define NOT_TMU0 0x00
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#define NOT_TMU1 0x01
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#define NOT_TMU2 0x02
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void util_init();
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void render_tri(uint16_t linew = 0);
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int cull_tri(VERTEX **v);
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void draw_tri(VERTEX **v, uint16_t linew = 0);
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void do_triangle_stuff(uint16_t linew = 0, int old_interpolate = TRUE);
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void do_triangle_stuff_2(uint16_t linew = 0);
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void add_tri(VERTEX *v, int n, int type);
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void apply_shade_mods(VERTEX *v);
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void update();
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void update_scissor();
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void set_message_combiner();
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float ScaleZ(float z);
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// positional and texel coordinate clipping
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#define CCLIP(ux,lx,ut,lt,uc,lc) \
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if (ux > lx || lx < uc || ux > lc) { rdp.tri_n += 2; return; } \
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if (ux < uc) { \
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float p = (uc-ux)/(lx-ux); \
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ut = p*(lt-ut)+ut; \
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ux = uc; \
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} \
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if (lx > lc) { \
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float p = (lc-ux)/(lx-ux); \
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lt = p*(lt-ut)+ut; \
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lx = lc; \
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}
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#define CCLIP2(ux,lx,ut,lt,un,ln,uc,lc) \
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if (ux > lx || lx < uc || ux > lc) { rdp.tri_n += 2; return; } \
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if (ux < uc) { \
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float p = (uc-ux)/(lx-ux); \
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ut = p*(lt-ut)+ut; \
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un = p*(ln-un)+un; \
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ux = uc; \
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} \
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if (lx > lc) { \
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float p = (lc-ux)/(lx-ux); \
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lt = p*(lt-ut)+ut; \
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ln = p*(ln-un)+un; \
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lx = lc; \
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}
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#if defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
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#include <stdlib.h>
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#define bswap32(x) _byteswap_ulong(x)
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#else
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static inline uint32_t bswap32(uint32_t val)
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{
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return (((val & 0xff000000) >> 24) |
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((val & 0x00ff0000) >> 8) |
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((val & 0x0000ff00) << 8) |
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((val & 0x000000ff) << 24));
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}
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#endif
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#define ALOWORD(x) (*((uint16_t*)&(x))) // low word
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static inline uint16_t __ROR__(uint16_t value, unsigned int count)
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{
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const unsigned int nbits = sizeof(uint16_t) * 8;
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count %= nbits;
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uint16_t low = (value << (nbits - count)) & 0xFFFF;
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value >>= count;
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value |= low;
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return value;
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}
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template<class T> static inline T __ROR__(T value, unsigned int count)
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{
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const unsigned int nbits = sizeof(T) * 8;
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count %= nbits;
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T low = value << (nbits - count);
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value >>= count;
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value |= low;
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return value;
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}
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// rotate left
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template<class T> static T __ROL__(T value, unsigned int count)
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{
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const unsigned int nbits = sizeof(T) * 8;
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count %= nbits;
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T high = value >> (nbits - count);
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value <<= count;
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value |= high;
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return value;
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}
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#endif // ifndef Util_H
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