| 83 |
|
|
| 84 |
|
|
| 85 |
|
int |
| 86 |
< |
gmDrawGeom(clearports) /* draw current list of octrees (and ports) */ |
| 87 |
< |
int clearports; |
| 86 |
> |
gmDrawGeom() /* draw current list of octrees (and ports) */ |
| 87 |
|
{ |
| 88 |
|
register int n; |
| 89 |
|
|
| 90 |
|
FORALLGEOM(gmCurrent, n) |
| 91 |
|
glCallList(gmCurrent[n].listid); |
| 92 |
< |
if (!n | !clearports | !gmPortals) |
| 93 |
< |
return(n); |
| 94 |
< |
/* mark alpha channel over the portals */ |
| 95 |
< |
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
| 92 |
> |
return(n); |
| 93 |
> |
} |
| 94 |
> |
|
| 95 |
> |
|
| 96 |
> |
gmDrawPortals(r, g, b, a) /* draw portals with specific RGBA value */ |
| 97 |
> |
int r, g, b, a; |
| 98 |
> |
{ |
| 99 |
> |
if (!gmPortals || r<0 & g<0 & b<0 & a<0) |
| 100 |
> |
return; |
| 101 |
> |
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT| |
| 102 |
> |
GL_POLYGON_BIT|GL_LIGHTING_BIT); |
| 103 |
> |
glDisable(GL_LIGHTING); |
| 104 |
> |
glDisable(GL_DITHER); |
| 105 |
> |
glShadeModel(GL_SMOOTH); |
| 106 |
> |
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
| 107 |
> |
/* don't actually write depth */ |
| 108 |
|
glDepthMask(GL_FALSE); |
| 109 |
< |
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE); |
| 110 |
< |
glClear(GL_COLOR_BUFFER_BIT); |
| 111 |
< |
glColor4ub(0, 0, 0, 0xff); /* write alpha buffer as mask */ |
| 109 |
> |
/* draw only selected channels */ |
| 110 |
> |
glColorMask(r>=0, g>=0, b>=0, a>=0); |
| 111 |
> |
glColor4ub(r&0xff, g&0xff, b&0xff, a&0xff); |
| 112 |
|
glCallList(gmPortals); /* draw them portals */ |
| 113 |
|
glPopAttrib(); |
| 103 |
– |
return(n); |
| 114 |
|
} |
| 115 |
|
|
| 116 |
|
|
