40 |
|
#define RAYQLEN 50000 /* max. rays to queue before flush */ |
41 |
|
#endif |
42 |
|
|
43 |
– |
/* values other than 0 or 255 do not map reliably */ |
44 |
– |
#ifndef PORTALP |
45 |
– |
#define PORTRED 0 /* -1, 0 or 255 */ |
46 |
– |
#define PORTGRN -1 /* -1, 0 or 255 */ |
47 |
– |
#define PORTBLU 255 /* -1, 0 or 255 */ |
48 |
– |
#define PORTALP -1 /* -1 or 255 */ |
49 |
– |
#endif |
50 |
– |
#define isportal(c) ((PORTRED<0 || (c)[0]==PORTRED) && \ |
51 |
– |
(PORTGRN<0 || (c)[1]==PORTGRN) && \ |
52 |
– |
(PORTBLU<0 || (c)[2]==PORTBLU) && \ |
53 |
– |
(PORTALP<0 || (c)[3]==PORTALP)) |
54 |
– |
#define doportals() if (gmPortals) \ |
55 |
– |
gmDrawPortals(PORTRED,PORTGRN,PORTBLU,PORTALP); else |
56 |
– |
|
43 |
|
#ifndef FEQ |
44 |
|
#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
45 |
|
#endif |
132 |
|
{ |
133 |
|
extern char *getenv(); |
134 |
|
static RGBPRIMS myprims = STDPRIMS; |
149 |
– |
#if (PORTALP<0) |
135 |
|
static int atlBest[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
136 |
|
GLX_RED_SIZE,8, GLX_GREEN_SIZE,8, |
137 |
|
GLX_BLUE_SIZE,8, GLX_DEPTH_SIZE,15, None}; |
138 |
|
static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
139 |
|
GLX_RED_SIZE,4, GLX_GREEN_SIZE,4, |
140 |
|
GLX_BLUE_SIZE,4, GLX_DEPTH_SIZE,15, None}; |
156 |
– |
#else |
157 |
– |
static int atlBest[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
158 |
– |
GLX_RED_SIZE,8, GLX_GREEN_SIZE,8, |
159 |
– |
GLX_BLUE_SIZE,8, GLX_ALPHA_SIZE,1, |
160 |
– |
GLX_DEPTH_SIZE,15, None}; |
161 |
– |
static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
162 |
– |
GLX_RED_SIZE,5, GLX_GREEN_SIZE,5, |
163 |
– |
GLX_BLUE_SIZE,5, GLX_ALPHA_SIZE,1, |
164 |
– |
GLX_DEPTH_SIZE,15, None}; |
165 |
– |
#endif |
141 |
|
char *ev; |
142 |
|
double gamval = GAMMA; |
143 |
|
RGBPRIMP dpri = stdprims; |
226 |
|
glXMakeCurrent(ourdisplay, gwind, gctx); |
227 |
|
glEnable(GL_DEPTH_TEST); |
228 |
|
glDepthFunc(GL_LEQUAL); |
229 |
< |
glEnable(GL_DITHER); |
229 |
> |
glClearColor(0, 0, 0, 0); |
230 |
|
glFrontFace(GL_CCW); |
231 |
|
glDisable(GL_CULL_FACE); |
232 |
|
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
437 |
|
#ifdef DOBJ |
438 |
|
ndrawn += dobj_render(); |
439 |
|
#endif |
465 |
– |
if (ndrawn) |
466 |
– |
doportals(); |
440 |
|
checkglerr("rendering right eye"); |
441 |
|
popright(); /* draw left eye */ |
442 |
|
#endif |
444 |
|
#ifdef DOBJ |
445 |
|
ndrawn += dobj_render(); |
446 |
|
#endif |
474 |
– |
if (ndrawn) |
475 |
– |
doportals(); |
447 |
|
glXSwapBuffers(ourdisplay, gwind); |
448 |
|
checkglerr("rendering base view"); |
449 |
|
} |
489 |
|
xferdepth() /* load and clear depth buffer */ |
490 |
|
{ |
491 |
|
register GLfloat *dbp; |
492 |
< |
register GLubyte *cbuf; |
492 |
> |
register GLubyte *pbuf; |
493 |
|
|
494 |
|
if (depthbuffer == NULL) { /* allocate private depth buffer */ |
495 |
|
#ifdef STEREO |
502 |
|
} |
503 |
|
/* allocate alpha buffer for portals */ |
504 |
|
if (gmPortals) |
505 |
< |
cbuf = (GLubyte *)malloc(odev.hres*odev.vres * |
506 |
< |
(4*sizeof(GLubyte))); |
505 |
> |
pbuf = (GLubyte *)malloc(odev.hres*odev.vres * |
506 |
> |
(4*sizeof(GLubyte))); |
507 |
|
else |
508 |
< |
cbuf = NULL; |
508 |
> |
pbuf = NULL; |
509 |
|
#ifdef STEREO |
510 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
511 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
512 |
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthright); |
513 |
< |
if (cbuf != NULL) |
513 |
> |
if (pbuf != NULL) { |
514 |
> |
glClear(GL_COLOR_BUFFER_BIT); |
515 |
> |
gmDrawPortals(0xff, -1, -1, -1); |
516 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
517 |
< |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
517 |
> |
GL_RGBA, GL_UNSIGNED_BYTE, pbuf); |
518 |
> |
} |
519 |
|
for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; ) |
520 |
< |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthright))) |
520 |
> |
if (pbuf != NULL && pbuf[4*(dbp-depthright)]&0x40) |
521 |
|
*dbp = FHUGE; |
522 |
|
else |
523 |
|
*dbp = mapdepth(*dbp); |
528 |
|
/* read back depth buffer */ |
529 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
530 |
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer); |
531 |
< |
if (cbuf != NULL) |
531 |
> |
if (pbuf != NULL) { |
532 |
> |
glClear(GL_COLOR_BUFFER_BIT); /* find portals */ |
533 |
> |
gmDrawPortals(0xff, -1, -1, -1); |
534 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
535 |
< |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
535 |
> |
GL_RGBA, GL_UNSIGNED_BYTE, pbuf); |
536 |
> |
} |
537 |
|
for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; ) |
538 |
< |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthbuffer))) |
538 |
> |
if (pbuf != NULL && pbuf[4*(dbp-depthbuffer)]&0x40) |
539 |
|
*dbp = FHUGE; |
540 |
|
else |
541 |
|
*dbp = mapdepth(*dbp); |
542 |
|
glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */ |
566 |
– |
if (cbuf != NULL) |
567 |
– |
free((char *)cbuf); /* free our color buffer */ |
543 |
|
odDepthMap(0, depthbuffer); /* transfer depth data */ |
544 |
+ |
if (pbuf != NULL) |
545 |
+ |
free((char *)pbuf); /* free our portal buffer */ |
546 |
|
} |
547 |
|
|
548 |
|
|
568 |
|
FVECT direc; |
569 |
|
{ |
570 |
|
GLfloat gldepth; |
594 |
– |
GLubyte glcolor[4]; |
571 |
|
double dist; |
572 |
|
|
573 |
|
if (dx<0 | dx>=odev.hres | dy<0 | dy>=odev.vres) |
577 |
|
else { |
578 |
|
glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT, |
579 |
|
GL_FLOAT, &gldepth); |
604 |
– |
if (gmPortals) { |
605 |
– |
glReadPixels(dx,dy, 1,1, GL_RGBA, |
606 |
– |
GL_UNSIGNED_BYTE, glcolor); |
607 |
– |
if (isportal(glcolor)) |
608 |
– |
return(FHUGE); |
609 |
– |
} |
580 |
|
dist = mapdepth(gldepth); |
581 |
|
} |
582 |
|
if (dist >= .99*FHUGE) |
810 |
|
#ifdef DOBJ |
811 |
|
ndrawn += dobj_render(); |
812 |
|
#endif |
843 |
– |
if (ndrawn) |
844 |
– |
doportals(); |
813 |
|
popright(); |
814 |
|
#endif |
815 |
|
/* redraw octrees */ |
817 |
|
#ifdef DOBJ |
818 |
|
ndrawn += dobj_render(); /* redraw objects */ |
819 |
|
#endif |
852 |
– |
if (ndrawn) |
853 |
– |
doportals(); |
820 |
|
glXSwapBuffers(ourdisplay, gwind); |
821 |
|
if (!ndrawn) |
822 |
|
sleep(1); /* for reasonable interaction */ |
915 |
|
wipeclean() /* prepare for redraw */ |
916 |
|
{ |
917 |
|
glDrawBuffer(GL_BACK); /* use double-buffer mode */ |
918 |
< |
glReadBuffer(GL_FRONT); /* read back visible contents */ |
953 |
< |
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
918 |
> |
glReadBuffer(GL_BACK); |
919 |
|
/* clear buffers */ |
920 |
|
#ifdef STEREO |
921 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
923 |
|
setstereobuf(STEREO_BUFFER_LEFT); |
924 |
|
#endif |
925 |
|
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
961 |
– |
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE); |
926 |
|
freedepth(); |
927 |
|
if ((viewflags&(VWCHANGE|VWSTEADY)) == |
928 |
|
(VWCHANGE|VWSTEADY)) { /* clear samples if new */ |