Glide Plugin GLES2 port from mupen64plus-ae, but with special FrameSkip code

[mupen64plus-pandora.git] / source / gles2glide64 / src / Glide64 / Util.h

diff --git a/source/gles2glide64/src/Glide64/Util.h b/source/gles2glide64/src/Glide64/Util.h
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+++ b/source/gles2glide64/src/Glide64/Util.h
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+/*
+* 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 ();
+void render_tri (wxUint16 linew = 0);
+
+int cull_tri (VERTEX **v);
+void draw_tri (VERTEX **v, wxUint16 linew = 0);
+void do_triangle_stuff (wxUint16 linew = 0, int old_interpolate = TRUE);
+void do_triangle_stuff_2 (wxUint16 linew = 0);
+void add_tri (VERTEX *v, int n, int type);
+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(__GNUC__)
+  #define bswap32(x) __builtin_bswap32(x)
+#elif 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
+
+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