1 |
– |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
– |
|
1 |
|
#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ SGI"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
|
#endif |
6 |
– |
|
4 |
|
/* |
5 |
|
* Geometry drawing operations for OpenGL driver. |
6 |
|
*/ |
16 |
|
#endif |
17 |
|
|
18 |
|
int gmPortals = 0; /* current portal GL list id */ |
19 |
+ |
static int Nlists = 0; /* number of lists allocated */ |
20 |
|
static char *curportlist[MAXPORT]; /* current portal list */ |
21 |
|
static char *newportlist[MAXPORT]; /* new portal file list */ |
22 |
|
|
25 |
|
FVECT cent; /* centroid */ |
26 |
|
FLOAT rad; /* radius */ |
27 |
|
int listid; /* display list identifier */ |
28 |
+ |
int nlists; /* number of lists allocated */ |
29 |
|
} gmCurrent[MAXGEO], gmNext[MAXGEO]; /* current and next list */ |
30 |
|
|
31 |
|
#define FORALLGEOM(ot,i) for (i=0;i<MAXGEO&&ot[i].gfile!=NULL;i++) |
32 |
|
|
33 |
|
#define FORALLPORT(pl,i) for (i=0;i<MAXPORT&&pl[i]!=NULL;i++) |
34 |
|
|
35 |
< |
extern char *atos(), *sskip(), *sskip2(); |
35 |
> |
extern char *nextword(); |
36 |
|
|
37 |
|
|
38 |
|
gmNewGeom(file) /* add new geometry to next list */ |
54 |
|
return; |
55 |
|
} |
56 |
|
/* else load new octree */ |
57 |
< |
gmNext[i].gfile = file; |
57 |
> |
gmNext[i].gfile = savestr(file); |
58 |
|
dolights = 0; |
59 |
|
domats = 1; |
60 |
< |
gmNext[i].listid = rgl_octlist(file, gmNext[i].cent, &gmNext[i].rad); |
60 |
> |
gmNext[i].listid = rgl_octlist(file, gmNext[i].cent, &gmNext[i].rad, |
61 |
> |
&gmNext[i].nlists); |
62 |
> |
gmNext[i].rad *= 1.732; /* go to corners */ |
63 |
|
#ifdef DEBUG |
64 |
|
fprintf(stderr, "Loaded octree \"%s\" into listID %d with radius %f\n", |
65 |
|
file, gmNext[i].listid, gmNext[i].rad); |
75 |
|
FORALLGEOM(gmNext, j) |
76 |
|
if (gmNext[j].listid == gmCurrent[i].listid) |
77 |
|
break; |
78 |
< |
if (j >= MAXGEO || gmNext[j].gfile == NULL) |
79 |
< |
glDeleteLists(gmCurrent[i].listid, 1); /* not found */ |
78 |
> |
if (j >= MAXGEO || gmNext[j].gfile == NULL) { |
79 |
> |
glDeleteLists(gmCurrent[i].listid, /* not found */ |
80 |
> |
gmCurrent[i].nlists); |
81 |
> |
freestr(gmCurrent[i].gfile); |
82 |
> |
} |
83 |
|
} |
84 |
< |
bcopy((char *)gmNext, (char *)gmCurrent, sizeof(gmNext)); |
85 |
< |
bzero((char *)gmNext, sizeof(gmNext)); |
84 |
> |
bcopy((void *)gmNext, (void *)gmCurrent, sizeof(gmNext)); |
85 |
> |
bzero((void *)gmNext, sizeof(gmNext)); |
86 |
|
} |
87 |
|
|
88 |
|
|
89 |
|
int |
90 |
< |
gmDrawGeom(clearports) /* draw current list of octrees (and ports) */ |
87 |
< |
int clearports; |
90 |
> |
gmDrawGeom() /* draw current list of octrees */ |
91 |
|
{ |
92 |
|
register int n; |
93 |
|
|
94 |
|
FORALLGEOM(gmCurrent, n) |
95 |
|
glCallList(gmCurrent[n].listid); |
96 |
< |
if (!n | !clearports | !gmPortals) |
97 |
< |
return(n); |
98 |
< |
/* mark alpha channel over the portals */ |
99 |
< |
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
96 |
> |
return(n); |
97 |
> |
} |
98 |
> |
|
99 |
> |
|
100 |
> |
gmDrawPortals(r, g, b, a) /* draw portals with specific RGBA value */ |
101 |
> |
int r, g, b, a; |
102 |
> |
{ |
103 |
> |
if (!gmPortals || r<0 & g<0 & b<0 & a<0) |
104 |
> |
return; |
105 |
> |
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT| |
106 |
> |
GL_POLYGON_BIT|GL_LIGHTING_BIT); |
107 |
> |
glDisable(GL_LIGHTING); |
108 |
> |
glDisable(GL_DITHER); |
109 |
> |
glShadeModel(GL_FLAT); |
110 |
> |
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
111 |
> |
/* don't actually write depth */ |
112 |
|
glDepthMask(GL_FALSE); |
113 |
< |
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE); |
114 |
< |
glClear(GL_COLOR_BUFFER_BIT); |
115 |
< |
glColor4ub(0, 0, 0, 0xff); /* write alpha buffer as mask */ |
113 |
> |
/* draw only selected channels */ |
114 |
> |
glColorMask(r>=0, g>=0, b>=0, a>=0); |
115 |
> |
glColor4ub(r&0xff, g&0xff, b&0xff, a&0xff); |
116 |
|
glCallList(gmPortals); /* draw them portals */ |
117 |
|
glPopAttrib(); |
103 |
– |
return(n); |
118 |
|
} |
119 |
|
|
120 |
|
|
148 |
|
|
149 |
|
if (pflist == NULL) |
150 |
|
return; |
151 |
< |
while (*pflist) { |
138 |
< |
atos(newfile, sizeof(newfile), pflist); |
139 |
< |
if (!*newfile) |
140 |
< |
break; |
141 |
< |
pflist = sskip(pflist); |
151 |
> |
while ((pflist = nextword(newfile, sizeof(newfile), pflist)) != NULL) { |
152 |
|
FORALLPORT(newportlist,i) |
153 |
|
if (!strcmp(newportlist[i], newfile)) |
154 |
|
goto endloop; /* in list already */ |
178 |
|
FORALLPORT(newportlist, n); |
179 |
|
if (!n) { /* free old GL list */ |
180 |
|
if (gmPortals) |
181 |
< |
glDeleteLists(gmPortals, 1); |
181 |
> |
glDeleteLists(gmPortals, Nlists); |
182 |
|
gmPortals = 0; |
183 |
|
} else |
184 |
|
qsort(newportlist, n, sizeof(char *), sstrcmp); |
191 |
|
FORALLPORT(newportlist, n); |
192 |
|
dolights = 0; |
193 |
|
domats = 0; |
194 |
< |
gmPortals = rgl_filelist(n, newportlist); |
194 |
> |
gmPortals = rgl_filelist(n, newportlist, &Nlists); |
195 |
|
break; |
196 |
|
} |
197 |
|
FORALLPORT(curportlist, n) /* free old file list */ |
198 |
|
freestr(curportlist[n]); |
199 |
< |
bcopy((char *)newportlist, (char *)curportlist, sizeof(newportlist)); |
200 |
< |
bzero((char *)newportlist, sizeof(newportlist)); |
199 |
> |
bcopy((void *)newportlist, (void *)curportlist, sizeof(newportlist)); |
200 |
> |
bzero((void *)newportlist, sizeof(newportlist)); |
201 |
|
return(gmPortals); /* return GL list id */ |
202 |
|
} |