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-rw-r--r--WinQuake/r_sky.c560
1 files changed, 280 insertions, 280 deletions
diff --git a/WinQuake/r_sky.c b/WinQuake/r_sky.c
index c8bfffd..91b17d7 100644
--- a/WinQuake/r_sky.c
+++ b/WinQuake/r_sky.c
@@ -1,280 +1,280 @@
-/*
-Copyright (C) 1996-1997 Id Software, Inc.
-
-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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-*/
-// r_sky.c
-
-#include "quakedef.h"
-#include "r_local.h"
-#include "d_local.h"
-
-
-int iskyspeed = 8;
-int iskyspeed2 = 2;
-float skyspeed, skyspeed2;
-
-float skytime;
-
-byte *r_skysource;
-
-int r_skymade;
-int r_skydirect; // not used?
-
-
-// TODO: clean up these routines
-
-byte bottomsky[128*131];
-byte bottommask[128*131];
-byte newsky[128*256]; // newsky and topsky both pack in here, 128 bytes
- // of newsky on the left of each scan, 128 bytes
- // of topsky on the right, because the low-level
- // drawers need 256-byte scan widths
-
-
-/*
-=============
-R_InitSky
-
-A sky texture is 256*128, with the right side being a masked overlay
-==============
-*/
-void R_InitSky (texture_t *mt)
-{
- int i, j;
- byte *src;
-
- src = (byte *)mt + mt->offsets[0];
-
- for (i=0 ; i<128 ; i++)
- {
- for (j=0 ; j<128 ; j++)
- {
- newsky[(i*256) + j + 128] = src[i*256 + j + 128];
- }
- }
-
- for (i=0 ; i<128 ; i++)
- {
- for (j=0 ; j<131 ; j++)
- {
- if (src[i*256 + (j & 0x7F)])
- {
- bottomsky[(i*131) + j] = src[i*256 + (j & 0x7F)];
- bottommask[(i*131) + j] = 0;
- }
- else
- {
- bottomsky[(i*131) + j] = 0;
- bottommask[(i*131) + j] = 0xff;
- }
- }
- }
-
- r_skysource = newsky;
-}
-
-
-/*
-=================
-R_MakeSky
-=================
-*/
-void R_MakeSky (void)
-{
- int x, y;
- int ofs, baseofs;
- int xshift, yshift;
- unsigned *pnewsky;
- static int xlast = -1, ylast = -1;
-
- xshift = skytime*skyspeed;
- yshift = skytime*skyspeed;
-
- if ((xshift == xlast) && (yshift == ylast))
- return;
-
- xlast = xshift;
- ylast = yshift;
-
- pnewsky = (unsigned *)&newsky[0];
-
- for (y=0 ; y<SKYSIZE ; y++)
- {
- baseofs = ((y+yshift) & SKYMASK) * 131;
-
-// FIXME: clean this up
-#if UNALIGNED_OK
-
- for (x=0 ; x<SKYSIZE ; x += 4)
- {
- ofs = baseofs + ((x+xshift) & SKYMASK);
-
- // PORT: unaligned dword access to bottommask and bottomsky
-
- *pnewsky = (*(pnewsky + (128 / sizeof (unsigned))) &
- *(unsigned *)&bottommask[ofs]) |
- *(unsigned *)&bottomsky[ofs];
- pnewsky++;
- }
-
-#else
-
- for (x=0 ; x<SKYSIZE ; x++)
- {
- ofs = baseofs + ((x+xshift) & SKYMASK);
-
- *(byte *)pnewsky = (*((byte *)pnewsky + 128) &
- *(byte *)&bottommask[ofs]) |
- *(byte *)&bottomsky[ofs];
- pnewsky = (unsigned *)((byte *)pnewsky + 1);
- }
-
-#endif
-
- pnewsky += 128 / sizeof (unsigned);
- }
-
- r_skymade = 1;
-}
-
-
-/*
-=================
-R_GenSkyTile
-=================
-*/
-void R_GenSkyTile (void *pdest)
-{
- int x, y;
- int ofs, baseofs;
- int xshift, yshift;
- unsigned *pnewsky;
- unsigned *pd;
-
- xshift = skytime*skyspeed;
- yshift = skytime*skyspeed;
-
- pnewsky = (unsigned *)&newsky[0];
- pd = (unsigned *)pdest;
-
- for (y=0 ; y<SKYSIZE ; y++)
- {
- baseofs = ((y+yshift) & SKYMASK) * 131;
-
-// FIXME: clean this up
-#if UNALIGNED_OK
-
- for (x=0 ; x<SKYSIZE ; x += 4)
- {
- ofs = baseofs + ((x+xshift) & SKYMASK);
-
- // PORT: unaligned dword access to bottommask and bottomsky
-
- *pd = (*(pnewsky + (128 / sizeof (unsigned))) &
- *(unsigned *)&bottommask[ofs]) |
- *(unsigned *)&bottomsky[ofs];
- pnewsky++;
- pd++;
- }
-
-#else
-
- for (x=0 ; x<SKYSIZE ; x++)
- {
- ofs = baseofs + ((x+xshift) & SKYMASK);
-
- *(byte *)pd = (*((byte *)pnewsky + 128) &
- *(byte *)&bottommask[ofs]) |
- *(byte *)&bottomsky[ofs];
- pnewsky = (unsigned *)((byte *)pnewsky + 1);
- pd = (unsigned *)((byte *)pd + 1);
- }
-
-#endif
-
- pnewsky += 128 / sizeof (unsigned);
- }
-}
-
-
-/*
-=================
-R_GenSkyTile16
-=================
-*/
-void R_GenSkyTile16 (void *pdest)
-{
- int x, y;
- int ofs, baseofs;
- int xshift, yshift;
- byte *pnewsky;
- unsigned short *pd;
-
- xshift = skytime * skyspeed;
- yshift = skytime * skyspeed;
-
- pnewsky = (byte *)&newsky[0];
- pd = (unsigned short *)pdest;
-
- for (y=0 ; y<SKYSIZE ; y++)
- {
- baseofs = ((y+yshift) & SKYMASK) * 131;
-
-// FIXME: clean this up
-// FIXME: do faster unaligned version?
- for (x=0 ; x<SKYSIZE ; x++)
- {
- ofs = baseofs + ((x+xshift) & SKYMASK);
-
- *pd = d_8to16table[(*(pnewsky + 128) &
- *(byte *)&bottommask[ofs]) |
- *(byte *)&bottomsky[ofs]];
- pnewsky++;
- pd++;
- }
-
- pnewsky += TILE_SIZE;
- }
-}
-
-
-/*
-=============
-R_SetSkyFrame
-==============
-*/
-void R_SetSkyFrame (void)
-{
- int g, s1, s2;
- float temp;
-
- skyspeed = iskyspeed;
- skyspeed2 = iskyspeed2;
-
- g = GreatestCommonDivisor (iskyspeed, iskyspeed2);
- s1 = iskyspeed / g;
- s2 = iskyspeed2 / g;
- temp = SKYSIZE * s1 * s2;
-
- skytime = cl.time - ((int)(cl.time / temp) * temp);
-
-
- r_skymade = 0;
-}
-
-
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+// r_sky.c
+
+#include "quakedef.h"
+#include "r_local.h"
+#include "d_local.h"
+
+
+int iskyspeed = 8;
+int iskyspeed2 = 2;
+float skyspeed, skyspeed2;
+
+float skytime;
+
+byte *r_skysource;
+
+int r_skymade;
+int r_skydirect; // not used?
+
+
+// TODO: clean up these routines
+
+byte bottomsky[128*131];
+byte bottommask[128*131];
+byte newsky[128*256]; // newsky and topsky both pack in here, 128 bytes
+ // of newsky on the left of each scan, 128 bytes
+ // of topsky on the right, because the low-level
+ // drawers need 256-byte scan widths
+
+
+/*
+=============
+R_InitSky
+
+A sky texture is 256*128, with the right side being a masked overlay
+==============
+*/
+void R_InitSky (texture_t *mt)
+{
+ int i, j;
+ byte *src;
+
+ src = (byte *)mt + mt->offsets[0];
+
+ for (i=0 ; i<128 ; i++)
+ {
+ for (j=0 ; j<128 ; j++)
+ {
+ newsky[(i*256) + j + 128] = src[i*256 + j + 128];
+ }
+ }
+
+ for (i=0 ; i<128 ; i++)
+ {
+ for (j=0 ; j<131 ; j++)
+ {
+ if (src[i*256 + (j & 0x7F)])
+ {
+ bottomsky[(i*131) + j] = src[i*256 + (j & 0x7F)];
+ bottommask[(i*131) + j] = 0;
+ }
+ else
+ {
+ bottomsky[(i*131) + j] = 0;
+ bottommask[(i*131) + j] = 0xff;
+ }
+ }
+ }
+
+ r_skysource = newsky;
+}
+
+
+/*
+=================
+R_MakeSky
+=================
+*/
+void R_MakeSky (void)
+{
+ int x, y;
+ int ofs, baseofs;
+ int xshift, yshift;
+ unsigned *pnewsky;
+ static int xlast = -1, ylast = -1;
+
+ xshift = skytime*skyspeed;
+ yshift = skytime*skyspeed;
+
+ if ((xshift == xlast) && (yshift == ylast))
+ return;
+
+ xlast = xshift;
+ ylast = yshift;
+
+ pnewsky = (unsigned *)&newsky[0];
+
+ for (y=0 ; y<SKYSIZE ; y++)
+ {
+ baseofs = ((y+yshift) & SKYMASK) * 131;
+
+// FIXME: clean this up
+#if UNALIGNED_OK
+
+ for (x=0 ; x<SKYSIZE ; x += 4)
+ {
+ ofs = baseofs + ((x+xshift) & SKYMASK);
+
+ // PORT: unaligned dword access to bottommask and bottomsky
+
+ *pnewsky = (*(pnewsky + (128 / sizeof (unsigned))) &
+ *(unsigned *)&bottommask[ofs]) |
+ *(unsigned *)&bottomsky[ofs];
+ pnewsky++;
+ }
+
+#else
+
+ for (x=0 ; x<SKYSIZE ; x++)
+ {
+ ofs = baseofs + ((x+xshift) & SKYMASK);
+
+ *(byte *)pnewsky = (*((byte *)pnewsky + 128) &
+ *(byte *)&bottommask[ofs]) |
+ *(byte *)&bottomsky[ofs];
+ pnewsky = (unsigned *)((byte *)pnewsky + 1);
+ }
+
+#endif
+
+ pnewsky += 128 / sizeof (unsigned);
+ }
+
+ r_skymade = 1;
+}
+
+
+/*
+=================
+R_GenSkyTile
+=================
+*/
+void R_GenSkyTile (void *pdest)
+{
+ int x, y;
+ int ofs, baseofs;
+ int xshift, yshift;
+ unsigned *pnewsky;
+ unsigned *pd;
+
+ xshift = skytime*skyspeed;
+ yshift = skytime*skyspeed;
+
+ pnewsky = (unsigned *)&newsky[0];
+ pd = (unsigned *)pdest;
+
+ for (y=0 ; y<SKYSIZE ; y++)
+ {
+ baseofs = ((y+yshift) & SKYMASK) * 131;
+
+// FIXME: clean this up
+#if UNALIGNED_OK
+
+ for (x=0 ; x<SKYSIZE ; x += 4)
+ {
+ ofs = baseofs + ((x+xshift) & SKYMASK);
+
+ // PORT: unaligned dword access to bottommask and bottomsky
+
+ *pd = (*(pnewsky + (128 / sizeof (unsigned))) &
+ *(unsigned *)&bottommask[ofs]) |
+ *(unsigned *)&bottomsky[ofs];
+ pnewsky++;
+ pd++;
+ }
+
+#else
+
+ for (x=0 ; x<SKYSIZE ; x++)
+ {
+ ofs = baseofs + ((x+xshift) & SKYMASK);
+
+ *(byte *)pd = (*((byte *)pnewsky + 128) &
+ *(byte *)&bottommask[ofs]) |
+ *(byte *)&bottomsky[ofs];
+ pnewsky = (unsigned *)((byte *)pnewsky + 1);
+ pd = (unsigned *)((byte *)pd + 1);
+ }
+
+#endif
+
+ pnewsky += 128 / sizeof (unsigned);
+ }
+}
+
+
+/*
+=================
+R_GenSkyTile16
+=================
+*/
+void R_GenSkyTile16 (void *pdest)
+{
+ int x, y;
+ int ofs, baseofs;
+ int xshift, yshift;
+ byte *pnewsky;
+ unsigned short *pd;
+
+ xshift = skytime * skyspeed;
+ yshift = skytime * skyspeed;
+
+ pnewsky = (byte *)&newsky[0];
+ pd = (unsigned short *)pdest;
+
+ for (y=0 ; y<SKYSIZE ; y++)
+ {
+ baseofs = ((y+yshift) & SKYMASK) * 131;
+
+// FIXME: clean this up
+// FIXME: do faster unaligned version?
+ for (x=0 ; x<SKYSIZE ; x++)
+ {
+ ofs = baseofs + ((x+xshift) & SKYMASK);
+
+ *pd = d_8to16table[(*(pnewsky + 128) &
+ *(byte *)&bottommask[ofs]) |
+ *(byte *)&bottomsky[ofs]];
+ pnewsky++;
+ pd++;
+ }
+
+ pnewsky += TILE_SIZE;
+ }
+}
+
+
+/*
+=============
+R_SetSkyFrame
+==============
+*/
+void R_SetSkyFrame (void)
+{
+ int g, s1, s2;
+ float temp;
+
+ skyspeed = iskyspeed;
+ skyspeed2 = iskyspeed2;
+
+ g = GreatestCommonDivisor (iskyspeed, iskyspeed2);
+ s1 = iskyspeed / g;
+ s2 = iskyspeed2 / g;
+ temp = SKYSIZE * s1 * s2;
+
+ skytime = cl.time - ((int)(cl.time / temp) * temp);
+
+
+ r_skymade = 0;
+}
+
+
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