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; |
262 |
|
XMapWindow(ourdisplay, gwind); |
263 |
|
dev_input(); /* sets size and view angles */ |
264 |
|
if (!odInit(DisplayWidth(ourdisplay,ourscreen) * |
265 |
< |
DisplayHeight(ourdisplay,ourscreen) / 10)) |
265 |
> |
DisplayHeight(ourdisplay,ourscreen) / 4)) |
266 |
|
error(SYSTEM, "insufficient memory for value storage"); |
267 |
|
odev.name = id; |
268 |
|
odev.firstuse = 1; /* can't recycle samples */ |
363 |
|
if (gfn == NULL) { |
364 |
|
gmEndGeom(); |
365 |
|
gmEndPortal(); |
366 |
+ |
wipeclean(); /* new geometry, so redraw it */ |
367 |
|
return; |
368 |
|
} |
369 |
|
if (access(gfn, R_OK) == 0) |
447 |
|
if (mapped && isperspective > 0) { |
448 |
|
#ifdef STEREO |
449 |
|
pushright(); /* draw right eye */ |
450 |
< |
gmDrawGeom(0); |
450 |
> |
ndrawn = gmDrawGeom(); |
451 |
|
#ifdef DOBJ |
452 |
< |
dobj_render(); |
452 |
> |
ndrawn += dobj_render(); |
453 |
|
#endif |
454 |
+ |
if (ndrawn) |
455 |
+ |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
456 |
|
checkglerr("rendering right eye"); |
457 |
|
popright(); /* draw left eye */ |
458 |
|
#endif |
459 |
< |
ndrawn = gmDrawGeom(1); |
459 |
> |
ndrawn = gmDrawGeom(); |
460 |
|
#ifdef DOBJ |
461 |
|
ndrawn += dobj_render(); |
462 |
|
#endif |
463 |
+ |
if (ndrawn) |
464 |
+ |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
465 |
|
checkglerr("rendering base view"); |
466 |
|
} |
467 |
< |
if (mapped && viewsteady) { |
468 |
< |
if (isperspective) { /* first time after steady */ |
447 |
< |
#ifdef STEREO |
448 |
< |
pushright(); |
449 |
< |
popright(); |
450 |
< |
#endif |
467 |
> |
if (mapped && viewsteady) |
468 |
> |
if (isperspective > 0) { /* first time after steady */ |
469 |
|
if (ndrawn) |
470 |
|
xferdepth(); /* transfer and clear depth */ |
471 |
|
setglortho(); /* set orthographic view */ |
472 |
< |
} else { |
472 |
> |
} else if (!isperspective) { |
473 |
|
#ifdef STEREO |
474 |
|
pushright(); |
475 |
|
odUpdate(1); /* draw right eye */ |
477 |
|
#endif |
478 |
|
odUpdate(0); /* draw left eye */ |
479 |
|
} |
462 |
– |
} |
480 |
|
glFlush(); /* flush OpenGL */ |
481 |
|
rayqleft = RAYQLEN; |
482 |
|
/* flush X11 and return # pending */ |
501 |
|
xferdepth() /* load and clear depth buffer */ |
502 |
|
{ |
503 |
|
register GLfloat *dbp; |
504 |
< |
register GLubyte *abuf; |
504 |
> |
register GLubyte *cbuf; |
505 |
|
|
506 |
< |
if (depthbuffer == NULL) { |
506 |
> |
if (depthbuffer == NULL) { /* allocate private depth buffer */ |
507 |
|
#ifdef STEREO |
508 |
|
depthright = (GLfloat *)malloc( |
509 |
|
odev.hres*odev.vres*sizeof(GLfloat)); |
513 |
|
if (depthbuffer == NULL) |
514 |
|
error(SYSTEM, "out of memory in xferdepth"); |
515 |
|
} |
516 |
+ |
/* allocate alpha buffer for portals */ |
517 |
+ |
if (gmPortals) |
518 |
+ |
cbuf = (GLubyte *)malloc(odev.hres*odev.vres* |
519 |
+ |
(4*sizeof(GLubyte))); |
520 |
+ |
else |
521 |
+ |
cbuf = NULL; |
522 |
|
#ifdef STEREO |
523 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
524 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
525 |
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthright); |
526 |
< |
setstereobuf(STEREO_BUFFER_LEFT); |
526 |
> |
if (cbuf != NULL) |
527 |
> |
glReadPixels(0, 0, odev.hres, odev.vres, |
528 |
> |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
529 |
|
for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; ) |
530 |
< |
*dbp = mapdepth(*dbp); |
531 |
< |
odDepthMap(1, depthright); |
530 |
> |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthright))) |
531 |
> |
*dbp = FHUGE; |
532 |
> |
else |
533 |
> |
*dbp = mapdepth(*dbp); |
534 |
|
glClear(GL_DEPTH_BUFFER_BIT); |
535 |
+ |
setstereobuf(STEREO_BUFFER_LEFT); |
536 |
+ |
odDepthMap(1, depthright); |
537 |
|
#endif |
538 |
|
/* read back depth buffer */ |
539 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
540 |
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer); |
541 |
< |
/* 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) |
541 |
> |
if (cbuf != NULL) |
542 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
543 |
< |
GL_ALPHA, GL_UNSIGNED_BYTE, abuf); |
543 |
> |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
544 |
|
for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; ) |
545 |
< |
if (abuf != NULL && abuf[dbp-depthbuffer]) |
545 |
> |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthbuffer))) |
546 |
|
*dbp = FHUGE; |
547 |
|
else |
548 |
|
*dbp = mapdepth(*dbp); |
549 |
+ |
glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */ |
550 |
+ |
if (cbuf != NULL) |
551 |
+ |
free((char *)cbuf); /* free our color buffer */ |
552 |
|
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 */ |
553 |
|
} |
554 |
|
|
555 |
|
|
575 |
|
FVECT direc; |
576 |
|
{ |
577 |
|
GLfloat gldepth; |
578 |
< |
GLubyte glalpha; |
578 |
> |
GLubyte glcolor[4]; |
579 |
|
double dist; |
580 |
|
|
581 |
|
if (dx<0 | dx>=odev.hres | dy<0 | dy>=odev.vres) |
585 |
|
else { |
586 |
|
glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT, |
587 |
|
GL_FLOAT, &gldepth); |
588 |
< |
if (gmPortals) |
589 |
< |
glReadPixels(dx,dy, 1,1, GL_ALPHA, |
590 |
< |
GL_UNSIGNED_BYTE, &glalpha); |
591 |
< |
else |
592 |
< |
glalpha = 0; |
593 |
< |
dist = glalpha ? FHUGE : mapdepth(gldepth); |
588 |
> |
if (gmPortals) { |
589 |
> |
glReadPixels(dx,dy, 1,1, GL_RGBA, |
590 |
> |
GL_UNSIGNED_BYTE, glcolor); |
591 |
> |
if (isportal(glcolor)) |
592 |
> |
return(FHUGE); |
593 |
> |
} |
594 |
> |
dist = mapdepth(gldepth); |
595 |
|
} |
596 |
|
if (dist >= .99*FHUGE) |
597 |
|
return(FHUGE); |
820 |
|
#ifdef STEREO |
821 |
|
pushright(); |
822 |
|
draw_grids(1); |
823 |
< |
gmDrawGeom(0); |
823 |
> |
ndrawn = gmDrawGeom(); |
824 |
|
#ifdef DOBJ |
825 |
< |
dobj_render(); |
825 |
> |
ndrawn += dobj_render(); |
826 |
|
#endif |
827 |
+ |
if (ndrawn) |
828 |
+ |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
829 |
|
popright(); |
830 |
|
#endif |
831 |
|
/* redraw octrees */ |
832 |
< |
ndrawn = gmDrawGeom(1); |
832 |
> |
ndrawn = gmDrawGeom(); |
833 |
|
#ifdef DOBJ |
834 |
|
ndrawn += dobj_render(); /* redraw objects */ |
835 |
|
#endif |
836 |
+ |
if (ndrawn) |
837 |
+ |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
838 |
|
glFlush(); |
839 |
|
if (!ndrawn) { |
840 |
|
sleep(1); /* for reasonable interaction */ |