40 |
|
#define RAYQLEN 10240 /* max. rays to queue before flush */ |
41 |
|
#endif |
42 |
|
|
43 |
+ |
#ifndef PORTALP |
44 |
+ |
#define PORTRED 2 /* portal red color */ |
45 |
+ |
#define PORTGRN -1 /* portal green left alone */ |
46 |
+ |
#define PORTBLU 128 /* portal blue color */ |
47 |
+ |
#define PORTALP -1 /* don't use alpha channel */ |
48 |
+ |
#endif |
49 |
+ |
#define isportal(c) ((PORTRED<0 || (c)[0]==PORTRED) && \ |
50 |
+ |
(PORTGRN<0 || (c)[1]==PORTGRN) && \ |
51 |
+ |
(PORTBLU<0 || (c)[2]==PORTBLU) && \ |
52 |
+ |
(PORTALP<0 || (c)[3]==PORTALP)) |
53 |
+ |
|
54 |
|
#ifndef FEQ |
55 |
|
#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
56 |
|
#endif |
141 |
|
{ |
142 |
|
extern char *getenv(); |
143 |
|
static RGBPRIMS myprims = STDPRIMS; |
144 |
+ |
#if (PORTALP<0) |
145 |
|
static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,8, |
146 |
|
GLX_GREEN_SIZE,8, GLX_BLUE_SIZE,8, |
147 |
|
GLX_DEPTH_SIZE,15, None}; |
148 |
+ |
#else |
149 |
+ |
static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,8, |
150 |
+ |
GLX_GREEN_SIZE,8, GLX_BLUE_SIZE,8, |
151 |
+ |
GLX_ALPHA_SIZE,2, GLX_DEPTH_SIZE,15, None}; |
152 |
+ |
#endif |
153 |
|
char *ev; |
154 |
|
double gamval = GAMMA; |
155 |
|
RGBPRIMP dpri = stdprims; |
446 |
|
if (mapped && isperspective > 0) { |
447 |
|
#ifdef STEREO |
448 |
|
pushright(); /* draw right eye */ |
449 |
< |
gmDrawGeom(0); |
449 |
> |
ndrawn = gmDrawGeom(); |
450 |
|
#ifdef DOBJ |
451 |
< |
dobj_render(); |
451 |
> |
ndrawn += dobj_render(); |
452 |
|
#endif |
453 |
+ |
if (ndrawn) |
454 |
+ |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
455 |
|
checkglerr("rendering right eye"); |
456 |
|
popright(); /* draw left eye */ |
457 |
|
#endif |
458 |
< |
ndrawn = gmDrawGeom(1); |
458 |
> |
ndrawn = gmDrawGeom(); |
459 |
|
#ifdef DOBJ |
460 |
|
ndrawn += dobj_render(); |
461 |
|
#endif |
462 |
+ |
if (ndrawn) |
463 |
+ |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
464 |
|
checkglerr("rendering base view"); |
465 |
|
} |
466 |
|
if (mapped && viewsteady) { |
505 |
|
xferdepth() /* load and clear depth buffer */ |
506 |
|
{ |
507 |
|
register GLfloat *dbp; |
508 |
< |
register GLubyte *abuf; |
508 |
> |
register GLubyte *cbuf; |
509 |
|
|
510 |
< |
if (depthbuffer == NULL) { |
510 |
> |
if (depthbuffer == NULL) { /* allocate private depth buffer */ |
511 |
|
#ifdef STEREO |
512 |
|
depthright = (GLfloat *)malloc( |
513 |
|
odev.hres*odev.vres*sizeof(GLfloat)); |
517 |
|
if (depthbuffer == NULL) |
518 |
|
error(SYSTEM, "out of memory in xferdepth"); |
519 |
|
} |
520 |
+ |
/* allocate alpha buffer for portals */ |
521 |
+ |
if (gmPortals) |
522 |
+ |
cbuf = (GLubyte *)malloc(odev.hres*odev.vres* |
523 |
+ |
(4*sizeof(GLubyte))); |
524 |
+ |
else |
525 |
+ |
cbuf = NULL; |
526 |
|
#ifdef STEREO |
527 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
528 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
529 |
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthright); |
530 |
< |
setstereobuf(STEREO_BUFFER_LEFT); |
530 |
> |
if (cbuf != NULL) |
531 |
> |
glReadPixels(0, 0, odev.hres, odev.vres, |
532 |
> |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
533 |
|
for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; ) |
534 |
< |
*dbp = mapdepth(*dbp); |
535 |
< |
odDepthMap(1, depthright); |
534 |
> |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthright))) |
535 |
> |
*dbp = FHUGE; |
536 |
> |
else |
537 |
> |
*dbp = mapdepth(*dbp); |
538 |
|
glClear(GL_DEPTH_BUFFER_BIT); |
539 |
+ |
setstereobuf(STEREO_BUFFER_LEFT); |
540 |
+ |
odDepthMap(1, depthright); |
541 |
|
#endif |
542 |
|
/* read back depth buffer */ |
543 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
544 |
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer); |
545 |
< |
/* read alpha buffer for portals */ |
513 |
< |
if (gmPortals) |
514 |
< |
abuf = (GLubyte *)malloc(odev.hres*odev.vres*sizeof(GLubyte)); |
515 |
< |
else |
516 |
< |
abuf = NULL; |
517 |
< |
if (abuf != NULL) |
545 |
> |
if (cbuf != NULL) |
546 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
547 |
< |
GL_ALPHA, GL_UNSIGNED_BYTE, abuf); |
547 |
> |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
548 |
|
for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; ) |
549 |
< |
if (abuf != NULL && abuf[dbp-depthbuffer]) |
549 |
> |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthbuffer))) |
550 |
|
*dbp = FHUGE; |
551 |
|
else |
552 |
|
*dbp = mapdepth(*dbp); |
553 |
+ |
glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */ |
554 |
+ |
if (cbuf != NULL) |
555 |
+ |
free((char *)cbuf); /* free our color buffer */ |
556 |
|
odDepthMap(0, depthbuffer); /* transfer depth data */ |
526 |
– |
glClear(GL_DEPTH_BUFFER_BIT); /* clear system buffer */ |
527 |
– |
if (abuf != NULL) |
528 |
– |
free((char *)abuf); /* free alpha buffer */ |
557 |
|
} |
558 |
|
|
559 |
|
|
579 |
|
FVECT direc; |
580 |
|
{ |
581 |
|
GLfloat gldepth; |
582 |
< |
GLubyte glalpha; |
582 |
> |
GLubyte glcolor[4]; |
583 |
|
double dist; |
584 |
|
|
585 |
|
if (dx<0 | dx>=odev.hres | dy<0 | dy>=odev.vres) |
589 |
|
else { |
590 |
|
glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT, |
591 |
|
GL_FLOAT, &gldepth); |
592 |
< |
if (gmPortals) |
593 |
< |
glReadPixels(dx,dy, 1,1, GL_ALPHA, |
594 |
< |
GL_UNSIGNED_BYTE, &glalpha); |
595 |
< |
else |
596 |
< |
glalpha = 0; |
597 |
< |
dist = glalpha ? FHUGE : mapdepth(gldepth); |
592 |
> |
if (gmPortals) { |
593 |
> |
glReadPixels(dx,dy, 1,1, GL_RGBA, |
594 |
> |
GL_UNSIGNED_BYTE, glcolor); |
595 |
> |
if (isportal(glcolor)) |
596 |
> |
return(FHUGE); |
597 |
> |
} |
598 |
> |
dist = mapdepth(gldepth); |
599 |
|
} |
600 |
|
if (dist >= .99*FHUGE) |
601 |
|
return(FHUGE); |
824 |
|
#ifdef STEREO |
825 |
|
pushright(); |
826 |
|
draw_grids(1); |
827 |
< |
gmDrawGeom(0); |
827 |
> |
ndrawn = gmDrawGeom(); |
828 |
|
#ifdef DOBJ |
829 |
< |
dobj_render(); |
829 |
> |
ndrawn += dobj_render(); |
830 |
|
#endif |
831 |
+ |
if (ndrawn) |
832 |
+ |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
833 |
|
popright(); |
834 |
|
#endif |
835 |
|
/* redraw octrees */ |
836 |
< |
ndrawn = gmDrawGeom(1); |
836 |
> |
ndrawn = gmDrawGeom(); |
837 |
|
#ifdef DOBJ |
838 |
|
ndrawn += dobj_render(); /* redraw objects */ |
839 |
|
#endif |
840 |
+ |
if (ndrawn) |
841 |
+ |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
842 |
|
glFlush(); |
843 |
|
if (!ndrawn) { |
844 |
|
sleep(1); /* for reasonable interaction */ |