--- ray/src/util/glrad.c 1998/06/09 15:16:55 3.3 +++ ray/src/util/glrad.c 2003/02/22 02:07:30 3.13 @@ -1,19 +1,20 @@ -/* Copyright (c) 1998 Silicon Graphics, Inc. */ - #ifndef lint -static char SCCSid[] = "$SunId$ SGI"; +static const char RCSid[] = "$Id: glrad.c,v 3.13 2003/02/22 02:07:30 greg Exp $"; #endif - /* * Program to display Radiance scene using OpenGL. */ -#include "radogl.h" -#include "view.h" -#include "paths.h" #include #include +#ifndef NOSTEREO +#include +#endif #include +#include +#include "radogl.h" +#include "view.h" +#include "paths.h" #include "glradicon.h" #ifndef MAXVIEW @@ -30,9 +31,6 @@ static char SCCSid[] = "$SunId$ SGI"; #define MOVDEG (-5) /* degrees to orbit CW/down /frame */ #define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) -#define MINWIDTH 480 /* minimum graphics window width */ -#define MINHEIGHT 400 /* minimum graphics window height */ - #define BORWIDTH 5 /* border width */ #define ourscreen DefaultScreen(ourdisplay) @@ -65,6 +63,7 @@ struct { int currentview = 0; /* current view number */ VIEW thisview = STDVIEW; /* displayed view */ +double eyedist = 1; /* interocular distance */ VIEW lastview; /* last recorded view */ char *progname; /* global argv[0] */ @@ -75,13 +74,27 @@ char *octree; /* octree name (NULL if unnec.) */ int rtpd[3]; /* rtrace process descriptors */ +int silent = 0; /* run rad silently? */ int backvis = 1; /* back faces visible? */ +int stereo = 0; /* do stereo? */ +#ifdef NOSTEREO +#define setstereobuf(bid) 0 +#else +#define setstereobuf(bid) (glXWaitGL(), \ + XSGISetStereoBuffer(ourdisplay, gwind, bid), \ + glXWaitX()) +#endif + int displist; /* our scene display list */ -int in_dev_view = 0; /* currently in dev_view() */ +int no_render = 0; /* don't rerender */ -extern char *fgets(), *fgetline(), *atos(), *scan4var(); +#ifdef BSD +#define strchr index +#endif + +extern char *strchr(), *fgets(), *fgetline(), *atos(), *scan4var(); extern int nowarn; /* turn warnings off? */ extern time_t time(); @@ -103,6 +116,12 @@ char *argv[]; case 'w': nowarn = !nowarn; break; + case 's': + silent = !silent; + break; + case 'S': + stereo = !stereo; + break; case 'c': vwintvl = atoi(argv[++i]); break; @@ -114,6 +133,10 @@ char *argv[]; } if (i >= argc) goto userr; +#ifdef NOSTEREO + if (stereo) + error(INTERNAL, "stereo not supported in this version"); +#endif /* run rad and get views */ runrad(argc-i, argv+i); /* check view */ @@ -136,10 +159,10 @@ char *argv[]; dev_open(radfile = argv[i]); /* load octree or scene files */ if (octree != NULL) { - displist = rgl_octlist(octree, NULL, NULL); + displist = rgl_octlist(octree, NULL, NULL, NULL); startrtrace(octree); } else - displist = rgl_filelist(nscenef, scene); + displist = rgl_filelist(nscenef, scene, NULL); /* set initial view */ dev_view(currentview < 0 ? &thisview : vwl[currentview].v); /* input/render loop */ @@ -148,12 +171,14 @@ char *argv[]; /* all done */ quit(0); userr: - fprintf(stderr, "Usage: %s [-w][-b][-v view] rfile [VAR=value]..\n", + fprintf(stderr, + "Usage: %s [-w][-s][-b][-S][-v view] rfile [VAR=value]..\n", argv[0]); quit(1); } +void quit(code) /* exit gracefully */ int code; { @@ -196,6 +221,10 @@ char **av; /* set rad commmand */ strcpy(radcomm, "rad -w -v 0 "); /* look out below! */ cp = radcomm + 19; + if (silent) { + strcpy(cp, "-s "); + cp += 3; + } while (ac--) { strcpy(cp, *av++); while (*cp) cp++; @@ -218,6 +247,9 @@ char **av; expval = pow(2., expval); expval *= 0.5; /* compensate for local shading */ } + /* look for eye separation */ + if ((cp = scan4var(buf, sizeof(buf), "EYESEP", fp)) != NULL) + eyedist = atof(cp); /* look for materials */ while ((cp = scan4var(buf, sizeof(buf), "materials", fp)) != NULL) { nscenef += wordstring(scene+nscenef, cp); @@ -258,14 +290,15 @@ char **av; /* open options file */ if ((fp = fopen(optfile, "r")) == NULL) error(SYSTEM, "cannot open options file"); - /* get ambient value */ + /* get relevant options */ while (fgets(buf, sizeof(buf), fp) != NULL) - if (!strncmp(buf, "-av ", 4)) { + if (!strncmp(buf, "-av ", 4)) setcolor(ambval, atof(buf+4), atof(sskip2(buf+4,1)), atof(sskip2(buf+4,2))); - break; - } + else if (backvis && !strncmp(buf, "-bv", 3) && + (!buf[3] || strchr("0-FfNn \n",buf[3])!=NULL)) + backvis = 0; fclose(fp); unlink(optfile); /* delete options file */ } @@ -338,7 +371,6 @@ char *id; GLX_DOUBLEBUFFER, GLX_DEPTH_SIZE,15, None}; XSetWindowAttributes ourwinattr; XWMHints ourxwmhints; - XSizeHints oursizhints; /* open display server */ ourdisplay = XOpenDisplay(NULL); if (ourdisplay == NULL) @@ -364,42 +396,58 @@ char *id; if (gwind == 0) error(SYSTEM, "cannot create window\n"); XStoreName(ourdisplay, gwind, id); +#ifndef NOSTEREO + if (stereo) /* check if stereo working */ + switch (XSGIQueryStereoMode(ourdisplay, gwind)) { + case STEREO_TOP: + case STEREO_BOTTOM: + break; + case STEREO_OFF: + error(USER, + "wrong video mode: run \"/usr/gfx/setmon -n STR_TOP\" first"); + case X_STEREO_UNSUPPORTED: + error(USER, "stereo not supported on this screen"); + default: + error(INTERNAL, "unknown stereo mode"); + } +#endif /* set window manager hints */ ourxwmhints.flags = InputHint|IconPixmapHint; ourxwmhints.input = True; ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, gwind, glradicon_bits, glradicon_width, glradicon_height); XSetWMHints(ourdisplay, gwind, &ourxwmhints); - oursizhints.min_width = MINWIDTH; - oursizhints.min_height = MINHEIGHT; - oursizhints.flags = PMinSize; - XSetNormalHints(ourdisplay, gwind, &oursizhints); /* set GLX context */ glXMakeCurrent(ourdisplay, gwind, gctx); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LESS); glShadeModel(GL_SMOOTH); glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); - glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); + glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); glEnable(GL_LIGHTING); + glFrontFace(GL_CCW); + glCullFace(GL_BACK); if (backvis) glDisable(GL_CULL_FACE); - else { - glFrontFace(GL_CCW); - glCullFace(GL_BACK); + else glEnable(GL_CULL_FACE); - } glDrawBuffer(GL_BACK); /* figure out sensible view */ pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / DisplayWidth(ourdisplay, ourscreen); pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) / DisplayHeight(ourdisplay, ourscreen); + if (stereo) { /* set stereo mode */ + setstereobuf(STEREO_BUFFER_LEFT); + pheight *= 2.; + } /* map the window */ XMapWindow(ourdisplay, gwind); + no_render++; do dev_input(0); /* get resize event */ while (hres == 0 & vres == 0); + no_render--; rgl_checkerr("initializing GLX"); } @@ -450,12 +498,12 @@ register VIEW *nv; } } if (newhres != hres | newvres != vres) { - in_dev_view++; + no_render++; XResizeWindow(ourdisplay, gwind, newhres, newvres); do dev_input(0); /* get resize event */ while (newhres != hres | newvres != vres); - in_dev_view--; + no_render--; } } copystruct(&thisview, nv); @@ -507,10 +555,25 @@ int nsecs; render() /* render our display list and swap buffers */ { - if (!mapped) + double d; + + if (!mapped | no_render) return; glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); glCallList(displist); + if (stereo) { /* do right eye for stereo */ + setstereobuf(STEREO_BUFFER_RIGHT); + glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); + glMatrixMode(GL_MODELVIEW); + glPushMatrix(); + d = -eyedist / sqrt(thisview.hn2); + glTranslated(d*thisview.hvec[0], d*thisview.hvec[1], + d*thisview.hvec[2]); + glCallList(displist); + glMatrixMode(GL_MODELVIEW); + glPopMatrix(); + setstereobuf(STEREO_BUFFER_LEFT); + } glXSwapBuffers(ourdisplay, gwind); /* calls glFlush() */ rgl_checkerr("rendering display list"); } @@ -562,6 +625,16 @@ int dx, dy, mov, orb; } +static +waitabit() /* pause a moment */ +{ + struct timespec ts; + ts.tv_sec = 0; + ts.tv_nsec = 5000000; + nanosleep(&ts, NULL); +} + + getmove(ebut) /* get view change */ XButtonPressedEvent *ebut; { @@ -578,6 +651,8 @@ XButtonPressedEvent *ebut; while (!XCheckMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent))) { + /* pause so as not to move too fast */ + waitabit(); if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, &rootx, &rooty, &wx, &wy, &statemask)) @@ -613,8 +688,8 @@ double md; if (md <= FTINY) md = FHUGE; fbuf[3] = dir[0]*md; fbuf[4] = dir[1]*md; fbuf[5] = dir[2]*md; /* trace that ray */ - if (process(rtpd, fbuf, fbuf, 4*sizeof(float), 6*sizeof(float)) != - 4*sizeof(float)) + if (process(rtpd, (char *)fbuf, (char *)fbuf, + 4*sizeof(float), 6*sizeof(float)) != 4*sizeof(float)) error(INTERNAL, "error getting data back from rtrace process"); if (fbuf[3] >= .99*FHUGE) return(0); /* missed local objects */ @@ -745,9 +820,7 @@ int vwnum; ; else if (vwnum >= MAXVIEW || vwl[vwnum].v == NULL) vwnum = 0; - if (vwnum == currentview) - return; - /* copylastv("change view"); */ + copylastv("standard view"); dev_view(vwl[currentview=vwnum].v); } @@ -820,7 +893,7 @@ register XConfigureEvent *ersz; glViewport(0, 0, hres=ersz->width, vres=ersz->height); if (hres > maxhres) maxhres = hres; if (vres > maxvres) maxvres = vres; - if (in_dev_view) + if (no_render) return; wa = (vres*pheight)/(hres*pwidth); va = viewaspect(&thisview);