mirror of
https://github.com/TTimo/GtkRadiant.git
synced 2024-11-10 07:11:54 +00:00
9998050654
git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@183 8a3a26a2-13c4-0310-b231-cf6edde360e5
581 lines
12 KiB
C
581 lines
12 KiB
C
/*
|
|
Copyright (C) 1999-2007 id Software, Inc. and contributors.
|
|
For a list of contributors, see the accompanying CONTRIBUTORS file.
|
|
|
|
This file is part of GtkRadiant.
|
|
|
|
GtkRadiant 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.
|
|
|
|
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
// qvis.c
|
|
|
|
#include "qvis.h"
|
|
#include "q2_threads.h"
|
|
#include "stdlib.h"
|
|
|
|
int numportals;
|
|
int portalclusters;
|
|
|
|
char inbase[32];
|
|
char outbase[32];
|
|
|
|
portal_t *portals;
|
|
leaf_t *leafs;
|
|
|
|
int c_portaltest, c_portalpass, c_portalcheck;
|
|
|
|
byte *uncompressedvis;
|
|
|
|
byte *vismap, *vismap_p, *vismap_end; // past visfile
|
|
int originalvismapsize;
|
|
|
|
int leafbytes; // (portalclusters+63)>>3
|
|
int leaflongs;
|
|
|
|
int portalbytes, portallongs;
|
|
|
|
qboolean fastvis;
|
|
qboolean nosort;
|
|
|
|
int testlevel = 2;
|
|
|
|
int totalvis;
|
|
|
|
portal_t *sorted_portals[MAX_MAP_PORTALS*2];
|
|
|
|
|
|
//=============================================================================
|
|
|
|
void PlaneFromWinding (winding_t *w, plane_t *plane)
|
|
{
|
|
vec3_t v1, v2;
|
|
|
|
// calc plane
|
|
VectorSubtract (w->points[2], w->points[1], v1);
|
|
VectorSubtract (w->points[0], w->points[1], v2);
|
|
CrossProduct (v2, v1, plane->normal);
|
|
VectorNormalize (plane->normal, plane->normal);
|
|
plane->dist = DotProduct (w->points[0], plane->normal);
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
NewWinding
|
|
==================
|
|
*/
|
|
winding_t *NewWinding (int points)
|
|
{
|
|
winding_t *w;
|
|
int size;
|
|
|
|
if (points > MAX_POINTS_ON_WINDING)
|
|
Error ("NewWinding: %i points", points);
|
|
|
|
size = (int)((winding_t *)0)->points[points];
|
|
w = malloc (size);
|
|
memset (w, 0, size);
|
|
|
|
return w;
|
|
}
|
|
|
|
|
|
/*
|
|
void pw(winding_t *w)
|
|
{
|
|
int i;
|
|
for (i=0 ; i<w->numpoints ; i++)
|
|
Sys_Printf ("(%5.1f, %5.1f, %5.1f)\n",w->points[i][0], w->points[i][1],w->points[i][2]);
|
|
}
|
|
*/
|
|
void prl(leaf_t *l)
|
|
{
|
|
int i;
|
|
portal_t *p;
|
|
plane_t pl;
|
|
|
|
for (i=0 ; i<l->numportals ; i++)
|
|
{
|
|
p = l->portals[i];
|
|
pl = p->plane;
|
|
Sys_Printf ("portal %4i to leaf %4i : %7.1f : (%4.1f, %4.1f, %4.1f)\n",(int)(p-portals),p->leaf,pl.dist, pl.normal[0], pl.normal[1], pl.normal[2]);
|
|
}
|
|
}
|
|
|
|
|
|
//=============================================================================
|
|
|
|
/*
|
|
=============
|
|
SortPortals
|
|
|
|
Sorts the portals from the least complex, so the later ones can reuse
|
|
the earlier information.
|
|
=============
|
|
*/
|
|
int PComp (const void *a, const void *b)
|
|
{
|
|
if ( (*(portal_t **)a)->nummightsee == (*(portal_t **)b)->nummightsee)
|
|
return 0;
|
|
if ( (*(portal_t **)a)->nummightsee < (*(portal_t **)b)->nummightsee)
|
|
return -1;
|
|
return 1;
|
|
}
|
|
void SortPortals (void)
|
|
{
|
|
int i;
|
|
|
|
for (i=0 ; i<numportals*2 ; i++)
|
|
sorted_portals[i] = &portals[i];
|
|
|
|
if (nosort)
|
|
return;
|
|
qsort (sorted_portals, numportals*2, sizeof(sorted_portals[0]), PComp);
|
|
}
|
|
|
|
|
|
/*
|
|
==============
|
|
LeafVectorFromPortalVector
|
|
==============
|
|
*/
|
|
int LeafVectorFromPortalVector (byte *portalbits, byte *leafbits)
|
|
{
|
|
int i;
|
|
portal_t *p;
|
|
int c_leafs;
|
|
|
|
|
|
memset (leafbits, 0, leafbytes);
|
|
|
|
for (i=0 ; i<numportals*2 ; i++)
|
|
{
|
|
if (portalbits[i>>3] & (1<<(i&7)) )
|
|
{
|
|
p = portals+i;
|
|
leafbits[p->leaf>>3] |= (1<<(p->leaf&7));
|
|
}
|
|
}
|
|
|
|
c_leafs = CountBits (leafbits, portalclusters);
|
|
|
|
return c_leafs;
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
ClusterMerge
|
|
|
|
Merges the portal visibility for a leaf
|
|
===============
|
|
*/
|
|
void ClusterMerge (int leafnum)
|
|
{
|
|
leaf_t *leaf;
|
|
byte portalvector[MAX_PORTALS/8];
|
|
byte uncompressed[MAX_MAP_LEAFS/8];
|
|
byte compressed[MAX_MAP_LEAFS/8];
|
|
int i, j;
|
|
int numvis;
|
|
byte *dest;
|
|
portal_t *p;
|
|
int pnum;
|
|
|
|
// OR together all the portalvis bits
|
|
|
|
memset (portalvector, 0, portalbytes);
|
|
leaf = &leafs[leafnum];
|
|
for (i=0 ; i<leaf->numportals ; i++)
|
|
{
|
|
p = leaf->portals[i];
|
|
if (p->status != stat_done)
|
|
Error ("portal not done");
|
|
for (j=0 ; j<portallongs ; j++)
|
|
((long *)portalvector)[j] |= ((long *)p->portalvis)[j];
|
|
pnum = p - portals;
|
|
portalvector[pnum>>3] |= 1<<(pnum&7);
|
|
}
|
|
|
|
// convert portal bits to leaf bits
|
|
numvis = LeafVectorFromPortalVector (portalvector, uncompressed);
|
|
|
|
if (uncompressed[leafnum>>3] & (1<<(leafnum&7)))
|
|
Sys_Printf ("WARNING: Leaf portals saw into leaf\n");
|
|
|
|
uncompressed[leafnum>>3] |= (1<<(leafnum&7));
|
|
numvis++; // count the leaf itself
|
|
|
|
// save uncompressed for PHS calculation
|
|
memcpy (uncompressedvis + leafnum*leafbytes, uncompressed, leafbytes);
|
|
|
|
//
|
|
// compress the bit string
|
|
//
|
|
Sys_FPrintf( SYS_VRB, "cluster %4i : %4i visible\n", leafnum, numvis);
|
|
totalvis += numvis;
|
|
|
|
i = CompressVis (uncompressed, compressed);
|
|
|
|
dest = vismap_p;
|
|
vismap_p += i;
|
|
|
|
if (vismap_p > vismap_end)
|
|
Error ("Vismap expansion overflow");
|
|
|
|
dvis->bitofs[leafnum][DVIS_PVS] = dest-vismap;
|
|
|
|
memcpy (dest, compressed, i);
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
CalcPortalVis
|
|
==================
|
|
*/
|
|
void CalcPortalVis (void)
|
|
{
|
|
int i;
|
|
|
|
// fastvis just uses mightsee for a very loose bound
|
|
if (fastvis)
|
|
{
|
|
for (i=0 ; i<numportals*2 ; i++)
|
|
{
|
|
portals[i].portalvis = portals[i].portalflood;
|
|
portals[i].status = stat_done;
|
|
}
|
|
return;
|
|
}
|
|
|
|
RunThreadsOnIndividual (numportals*2, true, PortalFlow);
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
CalcVis
|
|
==================
|
|
*/
|
|
void CalcVis (void)
|
|
{
|
|
int i;
|
|
|
|
RunThreadsOnIndividual (numportals*2, true, BasePortalVis);
|
|
|
|
// RunThreadsOnIndividual (numportals*2, true, BetterPortalVis);
|
|
|
|
SortPortals ();
|
|
|
|
CalcPortalVis ();
|
|
|
|
//
|
|
// assemble the leaf vis lists by oring and compressing the portal lists
|
|
//
|
|
for (i=0 ; i<portalclusters ; i++)
|
|
ClusterMerge (i);
|
|
|
|
Sys_Printf ("Average clusters visible: %i\n", totalvis / portalclusters);
|
|
}
|
|
|
|
|
|
void SetPortalSphere (portal_t *p)
|
|
{
|
|
int i;
|
|
vec3_t total, dist;
|
|
winding_t *w;
|
|
float r, bestr;
|
|
|
|
w = p->winding;
|
|
VectorCopy (vec3_origin, total);
|
|
for (i=0 ; i<w->numpoints ; i++)
|
|
{
|
|
VectorAdd (total, w->points[i], total);
|
|
}
|
|
|
|
for (i=0 ; i<3 ; i++)
|
|
total[i] /= w->numpoints;
|
|
|
|
bestr = 0;
|
|
for (i=0 ; i<w->numpoints ; i++)
|
|
{
|
|
VectorSubtract (w->points[i], total, dist);
|
|
r = VectorLength (dist);
|
|
if (r > bestr)
|
|
bestr = r;
|
|
}
|
|
VectorCopy (total, p->origin);
|
|
p->radius = bestr;
|
|
}
|
|
|
|
/*
|
|
============
|
|
LoadPortals
|
|
============
|
|
*/
|
|
void LoadPortals (char *name)
|
|
{
|
|
int i, j;
|
|
portal_t *p;
|
|
leaf_t *l;
|
|
char magic[80];
|
|
FILE *f;
|
|
int numpoints;
|
|
winding_t *w;
|
|
int leafnums[2];
|
|
plane_t plane;
|
|
|
|
if (!strcmp(name,"-"))
|
|
f = stdin;
|
|
else
|
|
{
|
|
f = fopen(name, "r");
|
|
if (!f)
|
|
Error ("LoadPortals: couldn't read %s\n",name);
|
|
}
|
|
|
|
if (fscanf (f,"%79s\n%i\n%i\n",magic, &portalclusters, &numportals) != 3)
|
|
Error ("LoadPortals: failed to read header");
|
|
if (strcmp(magic,PORTALFILE))
|
|
Error ("LoadPortals: not a portal file");
|
|
|
|
Sys_Printf ("%4i portalclusters\n", portalclusters);
|
|
Sys_Printf ("%4i numportals\n", numportals);
|
|
|
|
// these counts should take advantage of 64 bit systems automatically
|
|
leafbytes = ((portalclusters+63)&~63)>>3;
|
|
leaflongs = leafbytes/sizeof(long);
|
|
|
|
portalbytes = ((numportals*2+63)&~63)>>3;
|
|
portallongs = portalbytes/sizeof(long);
|
|
|
|
// each file portal is split into two memory portals
|
|
portals = malloc(2*numportals*sizeof(portal_t));
|
|
memset (portals, 0, 2*numportals*sizeof(portal_t));
|
|
|
|
leafs = malloc(portalclusters*sizeof(leaf_t));
|
|
memset (leafs, 0, portalclusters*sizeof(leaf_t));
|
|
|
|
originalvismapsize = portalclusters*leafbytes;
|
|
uncompressedvis = malloc(originalvismapsize);
|
|
|
|
vismap = vismap_p = dvisdata;
|
|
dvis->numclusters = portalclusters;
|
|
vismap_p = (byte *)&dvis->bitofs[portalclusters];
|
|
|
|
vismap_end = vismap + MAX_MAP_VISIBILITY;
|
|
|
|
for (i=0, p=portals ; i<numportals ; i++)
|
|
{
|
|
if (fscanf (f, "%i %i %i ", &numpoints, &leafnums[0], &leafnums[1])
|
|
!= 3)
|
|
Error ("LoadPortals: reading portal %i", i);
|
|
if (numpoints > MAX_POINTS_ON_WINDING)
|
|
Error ("LoadPortals: portal %i has too many points", i);
|
|
if ( (unsigned)leafnums[0] > portalclusters
|
|
|| (unsigned)leafnums[1] > portalclusters)
|
|
Error ("LoadPortals: reading portal %i", i);
|
|
|
|
w = p->winding = NewWinding (numpoints);
|
|
w->original = true;
|
|
w->numpoints = numpoints;
|
|
|
|
for (j=0 ; j<numpoints ; j++)
|
|
{
|
|
double v[3];
|
|
int k;
|
|
|
|
// scanf into double, then assign to vec_t
|
|
// so we don't care what size vec_t is
|
|
if (fscanf (f, "(%lf %lf %lf ) "
|
|
, &v[0], &v[1], &v[2]) != 3)
|
|
Error ("LoadPortals: reading portal %i", i);
|
|
for (k=0 ; k<3 ; k++)
|
|
w->points[j][k] = v[k];
|
|
}
|
|
fscanf (f, "\n");
|
|
|
|
// calc plane
|
|
PlaneFromWinding (w, &plane);
|
|
|
|
// create forward portal
|
|
l = &leafs[leafnums[0]];
|
|
if (l->numportals == MAX_PORTALS_ON_LEAF)
|
|
Error ("Leaf with too many portals");
|
|
l->portals[l->numportals] = p;
|
|
l->numportals++;
|
|
|
|
p->winding = w;
|
|
VectorSubtract (vec3_origin, plane.normal, p->plane.normal);
|
|
p->plane.dist = -plane.dist;
|
|
p->leaf = leafnums[1];
|
|
SetPortalSphere (p);
|
|
p++;
|
|
|
|
// create backwards portal
|
|
l = &leafs[leafnums[1]];
|
|
if (l->numportals == MAX_PORTALS_ON_LEAF)
|
|
Error ("Leaf with too many portals");
|
|
l->portals[l->numportals] = p;
|
|
l->numportals++;
|
|
|
|
p->winding = NewWinding(w->numpoints);
|
|
p->winding->numpoints = w->numpoints;
|
|
for (j=0 ; j<w->numpoints ; j++)
|
|
{
|
|
VectorCopy (w->points[w->numpoints-1-j], p->winding->points[j]);
|
|
}
|
|
|
|
p->plane = plane;
|
|
p->leaf = leafnums[0];
|
|
SetPortalSphere (p);
|
|
p++;
|
|
|
|
}
|
|
|
|
fclose (f);
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
CalcPHS
|
|
|
|
Calculate the PHS (Potentially Hearable Set)
|
|
by ORing together all the PVS visible from a leaf
|
|
================
|
|
*/
|
|
void CalcPHS (void)
|
|
{
|
|
int i, j, k, l, index;
|
|
int bitbyte;
|
|
long *dest, *src;
|
|
byte *scan;
|
|
int count;
|
|
byte uncompressed[MAX_MAP_LEAFS/8];
|
|
byte compressed[MAX_MAP_LEAFS/8];
|
|
|
|
Sys_Printf ("Building PHS...\n");
|
|
|
|
count = 0;
|
|
for (i=0 ; i<portalclusters ; i++)
|
|
{
|
|
scan = uncompressedvis + i*leafbytes;
|
|
memcpy (uncompressed, scan, leafbytes);
|
|
for (j=0 ; j<leafbytes ; j++)
|
|
{
|
|
bitbyte = scan[j];
|
|
if (!bitbyte)
|
|
continue;
|
|
for (k=0 ; k<8 ; k++)
|
|
{
|
|
if (! (bitbyte & (1<<k)) )
|
|
continue;
|
|
// OR this pvs row into the phs
|
|
index = ((j<<3)+k);
|
|
if (index >= portalclusters)
|
|
Error ("Bad bit in PVS"); // pad bits should be 0
|
|
src = (long *)(uncompressedvis + index*leafbytes);
|
|
dest = (long *)uncompressed;
|
|
for (l=0 ; l<leaflongs ; l++)
|
|
((long *)uncompressed)[l] |= src[l];
|
|
}
|
|
}
|
|
for (j=0 ; j<portalclusters ; j++)
|
|
if (uncompressed[j>>3] & (1<<(j&7)) )
|
|
count++;
|
|
|
|
//
|
|
// compress the bit string
|
|
//
|
|
j = CompressVis (uncompressed, compressed);
|
|
|
|
dest = (long *)vismap_p;
|
|
vismap_p += j;
|
|
|
|
if (vismap_p > vismap_end)
|
|
Error ("Vismap expansion overflow");
|
|
|
|
dvis->bitofs[i][DVIS_PHS] = (byte *)dest-vismap;
|
|
|
|
memcpy (dest, compressed, j);
|
|
}
|
|
|
|
Sys_Printf ("Average clusters hearable: %i\n", count/portalclusters);
|
|
}
|
|
|
|
/*
|
|
===========
|
|
main
|
|
===========
|
|
*/
|
|
int VIS_Main ()
|
|
{
|
|
char portalfile[1024];
|
|
char source[1024];
|
|
char name[1024];
|
|
double start, end;
|
|
int total_vis_time;
|
|
|
|
Sys_Printf ("\n----- VIS ----\n\n");
|
|
|
|
//if (i != argc - 1)
|
|
// Error ("usage: vis [-threads #] [-level 0-4] [-fast] [-v] bspfile");
|
|
|
|
start = I_FloatTime ();
|
|
|
|
ThreadSetDefault ();
|
|
|
|
SetQdirFromPath (mapname);
|
|
strcpy (source, ExpandArg(mapname));
|
|
StripExtension (source);
|
|
DefaultExtension (source, ".bsp");
|
|
|
|
sprintf (name, "%s%s", inbase, source);
|
|
Sys_Printf ("reading %s\n", name);
|
|
LoadBSPFile (name);
|
|
if (numnodes == 0 || numfaces == 0)
|
|
Error ("Empty map");
|
|
|
|
sprintf (portalfile, "%s%s", inbase, ExpandArg(mapname));
|
|
StripExtension (portalfile);
|
|
strcat (portalfile, ".prt");
|
|
|
|
Sys_Printf ("reading %s\n", portalfile);
|
|
LoadPortals (portalfile);
|
|
|
|
CalcVis ();
|
|
|
|
CalcPHS ();
|
|
|
|
visdatasize = vismap_p - dvisdata;
|
|
Sys_Printf ("visdatasize:%i compressed from %i\n", visdatasize, originalvismapsize*2);
|
|
|
|
sprintf (name, "%s%s", outbase, source);
|
|
Sys_Printf ("writing %s\n", name);
|
|
WriteBSPFile (name);
|
|
|
|
end = I_FloatTime ();
|
|
total_vis_time = (int) (end-start);
|
|
Sys_Printf("\nVIS Time: ");
|
|
if ( total_vis_time > 59 )
|
|
Sys_Printf("%d Minutes ", total_vis_time/60 );
|
|
Sys_Printf( "%d Seconds\n", total_vis_time%60 );
|
|
|
|
|
|
return 0;
|
|
}
|
|
|