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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* OpenGL driver for holodeck display. |
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* Based on GLX driver using T-mesh. |
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#endif |
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#endif |
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#include "standard.h" |
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#include <sys/types.h> |
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#include <time.h> |
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#include <GL/glx.h> |
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#include <GL/glu.h> |
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#ifdef STEREO |
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#include <X11/extensions/SGIStereo.h> |
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#endif |
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#include "standard.h" |
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#include "rhd_odraw.h" |
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#include "rhdisp.h" |
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#include "paths.h" |
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#ifdef DOBJ |
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#include "rhdobj.h" |
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#endif |
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#include "x11icon.h" |
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#ifndef RAYQLEN |
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#define RAYQLEN 10240 /* max. rays to queue before flush */ |
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#define RAYQLEN 0 /* max. rays to queue before flush */ |
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#endif |
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#ifndef PORTALP |
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#define PORTRED 2 /* portal red color */ |
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#define PORTGRN -1 /* portal green left alone */ |
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#define PORTBLU 128 /* portal blue color */ |
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#define PORTALP -1 /* don't use alpha channel */ |
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#ifndef MINWIDTH |
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#define MINWIDTH 480 /* minimum graphics window width */ |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
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#endif |
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#define isportal(c) ((PORTRED<0 || (c)[0]==PORTRED) && \ |
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(PORTGRN<0 || (c)[1]==PORTGRN) && \ |
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(PORTBLU<0 || (c)[2]==PORTBLU) && \ |
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(PORTALP<0 || (c)[3]==PORTALP)) |
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#ifndef VIEWDIST |
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#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
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#endif |
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#ifndef BORWIDTH |
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#define BORWIDTH 5 /* border width */ |
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#endif |
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|
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#ifndef FEQ |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
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#endif |
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|
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#define VWHEADLOCK 01 /* head position is locked flag */ |
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#define VWPERSP 02 /* perspective view is set */ |
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#define VWORTHO 04 /* orthographic view is set */ |
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#define VWCHANGE 010 /* view has changed */ |
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#define VWSTEADY 020 /* view is now steady */ |
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#define VWMAPPED 040 /* window is mapped */ |
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|
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#define GAMMA 1.4 /* default gamma correction */ |
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|
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#define FRAMESTATE(s) (((s)&(ShiftMask|ControlMask))==(ShiftMask|ControlMask)) |
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
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|
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#define MINWIDTH 480 /* minimum graphics window width */ |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
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|
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#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
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|
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#define BORWIDTH 5 /* border width */ |
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|
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#define setstereobuf(bid) (glXWaitGL(), \ |
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \ |
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glXWaitX()) |
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static XEvent currentevent; /* current event */ |
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static int mapped = 0; /* window is mapped? */ |
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static unsigned long ourblack=0, ourwhite=~0; |
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static Display *ourdisplay = NULL; /* our display */ |
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static int inpresflags; /* input result flags */ |
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static int headlocked; /* lock vertical motion */ |
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static int viewflags; /* what's happening with view */ |
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static int isperspective; /* perspective/ortho view */ |
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static int viewsteady; /* is view steady? */ |
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/* |
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static int resizewindow(), getevent(), getkey(), moveview(), wipeclean(), |
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xferdepth(), freedepth(), setglortho(), |
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setglpersp(), getframe(), getmove(), fixwindow(), mytmflags(); |
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|
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static double getdistance(); |
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*/ |
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static void checkglerr(char *where); |
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static void xferdepth(void); |
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static void freedepth(void); |
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static double getdistance(int dx, int dy, FVECT direc); |
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static int mytmflags(void); |
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static void getevent(void); |
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static void draw3dline(register FVECT wp[2]); |
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static void draw_grids(int fore); |
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static int moveview(int dx, int dy, int mov, int orb); |
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static void getframe(XButtonPressedEvent *ebut); |
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static void getmove(XButtonPressedEvent *ebut); |
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static void getkey(register XKeyPressedEvent *ekey); |
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static void fixwindow(register XExposeEvent *eexp); |
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static void resizewindow(register XConfigureEvent *ersz); |
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static void waitabit(void); |
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static void setglpersp(void); |
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static void setglortho(void); |
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static void wipeclean(void); |
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|
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#ifdef STEREO |
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static int pushright(), popright(); |
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static void pushright(void); |
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static void popright(void); |
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#endif |
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extern int gmPortals; /* GL portal list id */ |
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extern time_t time(); |
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extern void |
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dev_open(id) /* initialize GLX driver */ |
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char *id; |
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{ |
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extern char *getenv(); |
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static RGBPRIMS myprims = STDPRIMS; |
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#if (PORTALP<0) |
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static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,8, |
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GLX_GREEN_SIZE,8, GLX_BLUE_SIZE,8, |
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GLX_DEPTH_SIZE,15, None}; |
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#else |
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static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,8, |
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GLX_GREEN_SIZE,8, GLX_BLUE_SIZE,8, |
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GLX_ALPHA_SIZE,2, GLX_DEPTH_SIZE,15, None}; |
152 |
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#endif |
160 |
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static int atlBest[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
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GLX_RED_SIZE,8, GLX_GREEN_SIZE,8, |
162 |
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GLX_BLUE_SIZE,8, GLX_DEPTH_SIZE,15, None}; |
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static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
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GLX_RED_SIZE,4, GLX_GREEN_SIZE,4, |
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GLX_BLUE_SIZE,4, GLX_DEPTH_SIZE,15, None}; |
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char *ev; |
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double gamval = GAMMA; |
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RGBPRIMP dpri = stdprims; |
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#endif |
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/* find a usable visual */ |
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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlBest); |
196 |
+ |
if (ourvinf == NULL) |
197 |
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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlOK); |
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CHECK(ourvinf==NULL, USER, "no suitable visuals available"); |
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/* get a context */ |
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gctx = glXCreateContext(ourdisplay, ourvinf, NULL, GL_TRUE); |
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glXMakeCurrent(ourdisplay, gwind, gctx); |
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glEnable(GL_DEPTH_TEST); |
253 |
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glDepthFunc(GL_LEQUAL); |
254 |
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glDisable(GL_DITHER); |
254 |
> |
glClearColor(0, 0, 0, 0); |
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glFrontFace(GL_CCW); |
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glDisable(GL_CULL_FACE); |
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glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
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glPixelStorei(GL_PACK_ALIGNMENT, 1); |
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
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/* figure out sensible view */ |
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
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DisplayWidth(ourdisplay, ourscreen); |
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setstereobuf(STEREO_BUFFER_LEFT); |
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#endif |
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checkglerr("setting rendering parameters"); |
271 |
< |
copystruct(&odev.v, &stdview); |
271 |
> |
odev.v = stdview; |
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odev.v.type = VT_PER; |
273 |
< |
headlocked = 0; /* free up head movement */ |
257 |
< |
viewsteady = 1; /* view starts static */ |
258 |
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isperspective = -1; /* but no view set, yet */ |
273 |
> |
viewflags = VWSTEADY; /* view starts static */ |
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/* map the window */ |
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XMapWindow(ourdisplay, gwind); |
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dev_input(); /* sets size and view angles */ |
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if (!odInit(DisplayWidth(ourdisplay,ourscreen) * |
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DisplayHeight(ourdisplay,ourscreen) / 4)) |
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> |
DisplayHeight(ourdisplay,ourscreen) / 3)) |
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error(SYSTEM, "insufficient memory for value storage"); |
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odev.name = id; |
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odev.firstuse = 1; /* can't recycle samples */ |
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} |
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dev_close() /* close our display and free resources */ |
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> |
extern void |
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> |
dev_close(void) /* close our display and free resources */ |
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{ |
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#ifdef DOBJ |
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dobj_cleanup(); |
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} |
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|
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dev_clear() /* clear our representation */ |
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> |
extern void |
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> |
dev_clear(void) /* clear our representation */ |
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{ |
312 |
< |
wipeclean(); |
312 |
> |
viewflags |= VWCHANGE; /* pretend our view has changed */ |
313 |
> |
wipeclean(); /* clean off display and samples */ |
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> |
dev_flush(); /* redraw geometry & get depth */ |
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rayqleft = 0; /* hold off update */ |
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} |
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|
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int |
320 |
< |
dev_view(nv) /* assign new driver view */ |
321 |
< |
register VIEW *nv; |
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> |
extern int |
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> |
dev_view( /* assign new driver view */ |
321 |
> |
register VIEW *nv |
322 |
> |
) |
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{ |
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double d; |
305 |
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|
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if (nv->type != VT_PER || /* check view legality */ |
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nv->horiz > 160. || nv->vert > 160.) { |
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error(COMMAND, "illegal view type/angle"); |
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XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
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dev_input(); /* get resize event */ |
358 |
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} |
359 |
< |
copystruct(&odev.v, nv); /* setview() already called */ |
359 |
> |
odev.v = *nv; /* setview() already called */ |
360 |
> |
viewflags |= VWCHANGE; |
361 |
> |
} |
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#ifdef STEREO |
363 |
< |
copystruct(&vwright, nv); |
364 |
< |
d = eyesepdist / sqrt(nv->hn2); |
365 |
< |
VSUM(vwright.vp, nv->vp, nv->hvec, d); |
366 |
< |
/* setview(&vwright); -- Unnecessary */ |
363 |
> |
vwright = *nv; |
364 |
> |
d = eyesepdist / sqrt(nv->hn2); |
365 |
> |
VSUM(vwright.vp, nv->vp, nv->hvec, d); |
366 |
> |
/* setview(&vwright); -- Unnecessary */ |
367 |
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#endif |
348 |
– |
} else |
349 |
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viewsteady = 1; |
368 |
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wipeclean(); |
369 |
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return(1); |
370 |
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} |
371 |
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|
372 |
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|
373 |
< |
dev_section(gfn, pfn) /* add octree for geometry rendering */ |
374 |
< |
char *gfn, *pfn; |
373 |
> |
extern void |
374 |
> |
dev_section( /* add octree for geometry rendering */ |
375 |
> |
char *gfn, |
376 |
> |
char *pfn |
377 |
> |
) |
378 |
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{ |
358 |
– |
extern char *index(); |
359 |
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char *cp; |
360 |
– |
|
379 |
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if (gfn == NULL) { |
380 |
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gmEndGeom(); |
381 |
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gmEndPortal(); |
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} |
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|
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|
398 |
< |
dev_auxcom(cmd, args) /* process an auxiliary command */ |
399 |
< |
char *cmd, *args; |
398 |
> |
extern void |
399 |
> |
dev_auxcom( /* process an auxiliary command */ |
400 |
> |
char *cmd, |
401 |
> |
char *args |
402 |
> |
) |
403 |
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{ |
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#ifdef DOBJ |
405 |
< |
if (dobj_command(cmd, args) >= 0) |
405 |
> |
int vischange; |
406 |
> |
|
407 |
> |
if ((vischange = dobj_command(cmd, args)) >= 0) { |
408 |
> |
if (vischange) { |
409 |
> |
imm_mode = beam_sync(1) > 0; |
410 |
> |
dev_clear(); |
411 |
> |
} |
412 |
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return; |
413 |
+ |
} |
414 |
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#endif |
415 |
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sprintf(errmsg, "%s: unknown command", cmd); |
416 |
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error(COMMAND, errmsg); |
417 |
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} |
418 |
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|
419 |
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|
420 |
< |
VIEW * |
421 |
< |
dev_auxview(n, hvres) /* return nth auxiliary view */ |
422 |
< |
int n; |
423 |
< |
int hvres[2]; |
420 |
> |
extern VIEW * |
421 |
> |
dev_auxview( /* return nth auxiliary view */ |
422 |
> |
int n, |
423 |
> |
int hvres[2] |
424 |
> |
) |
425 |
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{ |
426 |
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hvres[0] = odev.hres; hvres[1] = odev.vres; |
427 |
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if (n == 0) |
434 |
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} |
435 |
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|
436 |
|
|
437 |
< |
int |
438 |
< |
dev_input() /* get X11 input */ |
437 |
> |
extern int |
438 |
> |
dev_input(void) /* get X11 input */ |
439 |
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{ |
440 |
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inpresflags = 0; |
441 |
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|
450 |
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} |
451 |
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|
452 |
|
|
453 |
< |
dev_value(c, d, p) /* add a pixel value to our texture */ |
454 |
< |
COLR c; |
455 |
< |
FVECT d, p; |
453 |
> |
extern void |
454 |
> |
dev_value( /* add a pixel value to our texture */ |
455 |
> |
COLR c, |
456 |
> |
FVECT d, |
457 |
> |
FVECT p |
458 |
> |
) |
459 |
|
{ |
460 |
|
#ifdef DOBJ |
461 |
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if (dobj_lightsamp != NULL) { /* in light source sampling */ |
469 |
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} |
470 |
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|
471 |
|
|
472 |
< |
int |
473 |
< |
dev_flush() /* flush output as appropriate */ |
472 |
> |
extern int |
473 |
> |
dev_flush(void) /* flush output as appropriate */ |
474 |
|
{ |
475 |
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int ndrawn; |
476 |
|
|
477 |
< |
if (mapped && isperspective > 0) { |
477 |
> |
if ((viewflags&(VWMAPPED|VWPERSP)) == (VWMAPPED|VWPERSP)) { |
478 |
|
#ifdef STEREO |
479 |
|
pushright(); /* draw right eye */ |
480 |
|
ndrawn = gmDrawGeom(); |
481 |
|
#ifdef DOBJ |
482 |
|
ndrawn += dobj_render(); |
483 |
|
#endif |
452 |
– |
if (ndrawn) |
453 |
– |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
484 |
|
checkglerr("rendering right eye"); |
485 |
|
popright(); /* draw left eye */ |
486 |
|
#endif |
488 |
|
#ifdef DOBJ |
489 |
|
ndrawn += dobj_render(); |
490 |
|
#endif |
491 |
< |
if (ndrawn) |
462 |
< |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
491 |
> |
glXSwapBuffers(ourdisplay, gwind); |
492 |
|
checkglerr("rendering base view"); |
493 |
|
} |
494 |
< |
if (mapped && viewsteady) |
495 |
< |
if (isperspective > 0) { /* first time after steady */ |
496 |
< |
if (ndrawn) |
497 |
< |
xferdepth(); /* transfer and clear depth */ |
498 |
< |
setglortho(); /* set orthographic view */ |
499 |
< |
} else if (!isperspective) { |
494 |
> |
if ((viewflags&(VWMAPPED|VWSTEADY|VWPERSP|VWORTHO)) == |
495 |
> |
(VWMAPPED|VWSTEADY|VWPERSP)) { |
496 |
> |
/* first time after steady */ |
497 |
> |
if (ndrawn) |
498 |
> |
xferdepth(); /* transfer and clear depth */ |
499 |
> |
setglortho(); /* set orthographic view */ |
500 |
> |
|
501 |
> |
} |
502 |
> |
if ((viewflags&(VWMAPPED|VWSTEADY|VWPERSP|VWORTHO)) == |
503 |
> |
(VWMAPPED|VWSTEADY|VWORTHO)) { |
504 |
> |
/* else update cones */ |
505 |
|
#ifdef STEREO |
506 |
< |
pushright(); |
507 |
< |
odUpdate(1); /* draw right eye */ |
508 |
< |
popright(); |
506 |
> |
pushright(); |
507 |
> |
odUpdate(1); /* draw right eye */ |
508 |
> |
popright(); |
509 |
|
#endif |
510 |
< |
odUpdate(0); /* draw left eye */ |
511 |
< |
} |
512 |
< |
glFlush(); /* flush OpenGL */ |
510 |
> |
odUpdate(0); /* draw left eye */ |
511 |
> |
glFlush(); /* flush OpenGL */ |
512 |
> |
} |
513 |
|
rayqleft = RAYQLEN; |
514 |
|
/* flush X11 and return # pending */ |
515 |
|
return(odev.inpready = XPending(ourdisplay)); |
516 |
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} |
517 |
|
|
518 |
|
|
519 |
< |
checkglerr(where) /* check for GL or GLU error */ |
520 |
< |
char *where; |
519 |
> |
static void |
520 |
> |
checkglerr( /* check for GL or GLU error */ |
521 |
> |
char *where |
522 |
> |
) |
523 |
|
{ |
524 |
|
register GLenum errcode; |
525 |
|
|
531 |
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} |
532 |
|
|
533 |
|
|
534 |
< |
static |
535 |
< |
xferdepth() /* load and clear depth buffer */ |
534 |
> |
static void |
535 |
> |
xferdepth(void) /* load and clear depth buffer */ |
536 |
|
{ |
537 |
|
register GLfloat *dbp; |
538 |
< |
register GLubyte *cbuf; |
538 |
> |
register GLubyte *pbuf; |
539 |
|
|
540 |
|
if (depthbuffer == NULL) { /* allocate private depth buffer */ |
541 |
|
#ifdef STEREO |
548 |
|
} |
549 |
|
/* allocate alpha buffer for portals */ |
550 |
|
if (gmPortals) |
551 |
< |
cbuf = (GLubyte *)malloc(odev.hres*odev.vres* |
516 |
< |
(4*sizeof(GLubyte))); |
551 |
> |
pbuf = (GLubyte *)malloc(odev.hres*odev.vres*sizeof(GLubyte)); |
552 |
|
else |
553 |
< |
cbuf = NULL; |
553 |
> |
pbuf = NULL; |
554 |
|
#ifdef STEREO |
555 |
< |
setstereobuf(STEREO_BUFFER_RIGHT); |
555 |
> |
pushright(); |
556 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
557 |
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthright); |
558 |
< |
if (cbuf != NULL) |
558 |
> |
if (pbuf != NULL) { |
559 |
> |
glClear(GL_COLOR_BUFFER_BIT); |
560 |
> |
gmDrawPortals(0xff, -1, -1, -1); |
561 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
562 |
< |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
562 |
> |
GL_RED, GL_UNSIGNED_BYTE, pbuf); |
563 |
> |
} |
564 |
|
for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; ) |
565 |
< |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthright))) |
565 |
> |
if (pbuf != NULL && pbuf[dbp-depthright]&0x40) |
566 |
|
*dbp = FHUGE; |
567 |
|
else |
568 |
|
*dbp = mapdepth(*dbp); |
569 |
|
glClear(GL_DEPTH_BUFFER_BIT); |
532 |
– |
setstereobuf(STEREO_BUFFER_LEFT); |
570 |
|
odDepthMap(1, depthright); |
571 |
+ |
popright(); |
572 |
|
#endif |
573 |
|
/* read back depth buffer */ |
574 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
575 |
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer); |
576 |
< |
if (cbuf != NULL) |
576 |
> |
if (pbuf != NULL) { |
577 |
> |
glClear(GL_COLOR_BUFFER_BIT); /* find portals */ |
578 |
> |
gmDrawPortals(0xff, -1, -1, -1); |
579 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
580 |
< |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
580 |
> |
GL_RED, GL_UNSIGNED_BYTE, pbuf); |
581 |
> |
#ifdef DEBUG |
582 |
> |
glXSwapBuffers(ourdisplay, gwind); |
583 |
> |
#endif |
584 |
> |
} |
585 |
|
for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; ) |
586 |
< |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthbuffer))) |
586 |
> |
if (pbuf != NULL && pbuf[dbp-depthbuffer]&0x40) |
587 |
|
*dbp = FHUGE; |
588 |
|
else |
589 |
|
*dbp = mapdepth(*dbp); |
590 |
|
glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */ |
547 |
– |
if (cbuf != NULL) |
548 |
– |
free((char *)cbuf); /* free our color buffer */ |
591 |
|
odDepthMap(0, depthbuffer); /* transfer depth data */ |
592 |
+ |
if (pbuf != NULL) |
593 |
+ |
free((void *)pbuf); /* free our portal buffer */ |
594 |
|
} |
595 |
|
|
596 |
|
|
597 |
< |
static |
598 |
< |
freedepth() /* free recorded depth buffer */ |
597 |
> |
static void |
598 |
> |
freedepth(void) /* free recorded depth buffer */ |
599 |
|
{ |
600 |
|
if (depthbuffer == NULL) |
601 |
|
return; |
602 |
|
#ifdef STEREO |
603 |
|
odDepthMap(1, NULL); |
604 |
< |
free((char *)depthright); |
604 |
> |
free((void *)depthright); |
605 |
|
depthright = NULL; |
606 |
|
#endif |
607 |
|
odDepthMap(0, NULL); |
608 |
< |
free((char *)depthbuffer); |
608 |
> |
free((void *)depthbuffer); |
609 |
|
depthbuffer = NULL; |
610 |
|
} |
611 |
|
|
612 |
|
|
613 |
|
static double |
614 |
< |
getdistance(dx, dy, direc) /* distance from fore plane along view ray */ |
615 |
< |
int dx, dy; |
616 |
< |
FVECT direc; |
614 |
> |
getdistance( /* distance from fore plane along view ray */ |
615 |
> |
int dx, |
616 |
> |
int dy, |
617 |
> |
FVECT direc |
618 |
> |
) |
619 |
|
{ |
620 |
|
GLfloat gldepth; |
575 |
– |
GLubyte glcolor[4]; |
621 |
|
double dist; |
622 |
|
|
623 |
< |
if (dx<0 | dx>=odev.hres | dy<0 | dy>=odev.vres) |
623 |
> |
if ((dx<0) | (dx>=odev.hres) | (dy<0) | (dy>=odev.vres)) |
624 |
|
return(FHUGE); |
625 |
|
if (depthbuffer != NULL) |
626 |
|
dist = depthbuffer[dy*odev.hres + dx]; |
627 |
|
else { |
628 |
|
glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT, |
629 |
|
GL_FLOAT, &gldepth); |
630 |
< |
if (gmPortals) { |
631 |
< |
glReadPixels(dx,dy, 1,1, GL_RGBA, |
587 |
< |
GL_UNSIGNED_BYTE, glcolor); |
588 |
< |
if (isportal(glcolor)) |
589 |
< |
return(FHUGE); |
590 |
< |
} |
630 |
> |
if (gldepth <= FTINY) |
631 |
> |
return (FHUGE); /* call failed */ |
632 |
|
dist = mapdepth(gldepth); |
633 |
|
} |
634 |
|
if (dist >= .99*FHUGE) |
638 |
|
|
639 |
|
|
640 |
|
#ifdef STEREO |
641 |
< |
static |
642 |
< |
pushright() /* push on right view & buffer */ |
641 |
> |
static void |
642 |
> |
pushright(void) /* push on right view & buffer */ |
643 |
|
{ |
644 |
|
double d; |
645 |
|
|
646 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
647 |
< |
if (isperspective > 0) { |
647 |
> |
if (viewflags & VWPERSP) { |
648 |
|
glMatrixMode(GL_MODELVIEW); |
649 |
|
glPushMatrix(); |
650 |
|
d = -eyesepdist / sqrt(odev.v.hn2); |
655 |
|
} |
656 |
|
|
657 |
|
|
658 |
< |
static |
659 |
< |
popright() /* pop off right view & buffer */ |
658 |
> |
static void |
659 |
> |
popright(void) /* pop off right view & buffer */ |
660 |
|
{ |
661 |
< |
if (isperspective > 0) { |
661 |
> |
if (viewflags & VWPERSP) { |
662 |
|
glMatrixMode(GL_MODELVIEW); |
663 |
|
glPopMatrix(); |
664 |
|
} |
668 |
|
|
669 |
|
|
670 |
|
static int |
671 |
< |
mytmflags() /* figure out tone mapping flags */ |
671 |
> |
mytmflags(void) /* figure out tone mapping flags */ |
672 |
|
{ |
673 |
|
extern char *progname; |
674 |
|
register char *cp, *tail; |
692 |
|
} |
693 |
|
|
694 |
|
|
695 |
< |
static |
696 |
< |
getevent() /* get next event */ |
695 |
> |
static void |
696 |
> |
getevent(void) /* get next event */ |
697 |
|
{ |
698 |
|
XNextEvent(ourdisplay, levptr(XEvent)); |
699 |
|
switch (levptr(XEvent)->type) { |
701 |
|
resizewindow(levptr(XConfigureEvent)); |
702 |
|
break; |
703 |
|
case UnmapNotify: |
704 |
< |
mapped = 0; |
704 |
> |
viewflags &= ~VWMAPPED; |
705 |
|
break; |
706 |
|
case MapNotify: |
707 |
|
odRemap(0); |
708 |
< |
mapped = 1; |
708 |
> |
viewflags |= VWMAPPED; |
709 |
|
break; |
710 |
|
case Expose: |
711 |
|
fixwindow(levptr(XExposeEvent)); |
723 |
|
} |
724 |
|
|
725 |
|
|
726 |
< |
static |
727 |
< |
draw3dline(wp) /* draw 3d line in world coordinates */ |
728 |
< |
register FVECT wp[2]; |
726 |
> |
static void |
727 |
> |
draw3dline( /* draw 3d line in world coordinates */ |
728 |
> |
register FVECT wp[2] |
729 |
> |
) |
730 |
|
{ |
731 |
|
glVertex3d(wp[0][0], wp[0][1], wp[0][2]); |
732 |
|
glVertex3d(wp[1][0], wp[1][1], wp[1][2]); |
733 |
|
} |
734 |
|
|
735 |
|
|
736 |
< |
static |
737 |
< |
draw_grids(fore) /* draw holodeck section grids */ |
738 |
< |
int fore; |
736 |
> |
static void |
737 |
> |
draw_grids( /* draw holodeck section grids */ |
738 |
> |
int fore |
739 |
> |
) |
740 |
|
{ |
741 |
|
glPushAttrib(GL_LIGHTING_BIT|GL_ENABLE_BIT); |
742 |
|
glDisable(GL_LIGHTING); |
743 |
|
if (fore) |
744 |
< |
glColor3ub(0, 255, 255); |
744 |
> |
glColor3ub(4, 250, 250); |
745 |
|
else |
746 |
|
glColor3ub(0, 0, 0); |
747 |
|
glBegin(GL_LINES); /* draw each grid line */ |
752 |
|
} |
753 |
|
|
754 |
|
|
755 |
< |
static |
756 |
< |
moveview(dx, dy, mov, orb) /* move our view */ |
757 |
< |
int dx, dy, mov, orb; |
755 |
> |
static int |
756 |
> |
moveview( /* move our view */ |
757 |
> |
int dx, |
758 |
> |
int dy, |
759 |
> |
int mov, |
760 |
> |
int orb |
761 |
> |
) |
762 |
|
{ |
763 |
|
VIEW nv; |
764 |
|
FVECT odir, v1, wip; |
765 |
|
double d, d1; |
719 |
– |
register int li; |
766 |
|
/* start with old view */ |
767 |
< |
copystruct(&nv, &odev.v); |
767 |
> |
nv = odev.v; |
768 |
|
/* orient our motion */ |
769 |
|
if (viewray(v1, odir, &odev.v, |
770 |
|
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
797 |
|
d = MOVPCT/100. * mov; |
798 |
|
VSUM(nv.vp, nv.vp, odir, d); |
799 |
|
} |
800 |
< |
if (!mov ^ !orb && headlocked) { /* restore head height */ |
800 |
> |
if (!mov ^ !orb && viewflags&VWHEADLOCK) { /* restore height */ |
801 |
|
VSUM(v1, odev.v.vp, nv.vp, -1.); |
802 |
|
d = DOT(v1, nv.vup); |
803 |
|
VSUM(nv.vp, nv.vp, odev.v.vup, d); |
810 |
|
} |
811 |
|
|
812 |
|
|
813 |
< |
static |
814 |
< |
getframe(ebut) /* get focus frame */ |
815 |
< |
XButtonPressedEvent *ebut; |
813 |
> |
static void |
814 |
> |
getframe( /* get focus frame */ |
815 |
> |
XButtonPressedEvent *ebut |
816 |
> |
) |
817 |
|
{ |
818 |
|
int startx = ebut->x, starty = ebut->y; |
819 |
|
int endx, endy; |
821 |
|
XMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent)); |
822 |
|
endx = levptr(XButtonReleasedEvent)->x; |
823 |
|
endy = levptr(XButtonReleasedEvent)->y; |
824 |
< |
if (endx == startx | endy == starty) { |
824 |
> |
if ((endx == startx) | (endy == starty)) { |
825 |
|
XBell(ourdisplay, 0); |
826 |
|
return; |
827 |
|
} |
834 |
|
} |
835 |
|
|
836 |
|
|
837 |
< |
static |
838 |
< |
getmove(ebut) /* get view change */ |
792 |
< |
XButtonPressedEvent *ebut; |
837 |
> |
static void |
838 |
> |
waitabit(void) /* pause a moment */ |
839 |
|
{ |
840 |
+ |
struct timespec ts; |
841 |
+ |
ts.tv_sec = 0; |
842 |
+ |
ts.tv_nsec = 100000000L; |
843 |
+ |
nanosleep(&ts, NULL); |
844 |
+ |
} |
845 |
+ |
|
846 |
+ |
|
847 |
+ |
static void |
848 |
+ |
getmove( /* get view change */ |
849 |
+ |
XButtonPressedEvent *ebut |
850 |
+ |
) |
851 |
+ |
{ |
852 |
|
int movdir = MOVDIR(ebut->button); |
853 |
|
int movorb = MOVORB(ebut->state); |
854 |
|
int ndrawn; |
858 |
|
|
859 |
|
XNoOp(ourdisplay); /* makes sure we're not idle */ |
860 |
|
|
861 |
< |
viewsteady = 0; /* flag moving view */ |
862 |
< |
setglpersp(&odev.v); /* start us off in perspective */ |
861 |
> |
viewflags &= ~VWSTEADY; /* flag moving view */ |
862 |
> |
setglpersp(); /* start us off in perspective */ |
863 |
|
while (!XCheckMaskEvent(ourdisplay, |
864 |
|
ButtonReleaseMask, levptr(XEvent))) { |
865 |
+ |
/* pause so as not to move too fast */ |
866 |
+ |
waitabit(); |
867 |
|
/* get cursor position */ |
868 |
|
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
869 |
|
&rootx, &rooty, &wx, &wy, &statemask)) |
881 |
|
#ifdef DOBJ |
882 |
|
ndrawn += dobj_render(); |
883 |
|
#endif |
824 |
– |
if (ndrawn) |
825 |
– |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
884 |
|
popright(); |
885 |
|
#endif |
886 |
|
/* redraw octrees */ |
888 |
|
#ifdef DOBJ |
889 |
|
ndrawn += dobj_render(); /* redraw objects */ |
890 |
|
#endif |
891 |
< |
if (ndrawn) |
892 |
< |
gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP); |
835 |
< |
glFlush(); |
836 |
< |
if (!ndrawn) { |
891 |
> |
glXSwapBuffers(ourdisplay, gwind); |
892 |
> |
if (!ndrawn) |
893 |
|
sleep(1); /* for reasonable interaction */ |
838 |
– |
#ifdef STEREO |
839 |
– |
pushright(); |
840 |
– |
draw_grids(0); |
841 |
– |
popright(); |
842 |
– |
#endif |
843 |
– |
draw_grids(0); |
844 |
– |
} |
894 |
|
} |
895 |
|
if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */ |
896 |
|
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
898 |
|
wy = levptr(XButtonReleasedEvent)->y; |
899 |
|
moveview(wx, odev.vres-1-wy, movdir, movorb); |
900 |
|
} |
901 |
+ |
viewflags |= VWSTEADY; /* done goofing around */ |
902 |
|
} |
903 |
|
|
904 |
|
|
905 |
< |
static |
906 |
< |
setglpersp(vp) /* set perspective view in GL */ |
857 |
< |
register VIEW *vp; |
905 |
> |
static void |
906 |
> |
setglpersp(void) /* set perspective view in GL */ |
907 |
|
{ |
908 |
|
double d, xmin, xmax, ymin, ymax; |
909 |
|
GLfloat vec[4]; |
915 |
|
dev_zmax = 100.; |
916 |
|
} else { |
917 |
|
dev_zmin = 0.5*depthlim[0]; |
918 |
< |
dev_zmax = 1.75*depthlim[1]; |
918 |
> |
dev_zmax = 1.25*depthlim[1]; |
919 |
|
if (dev_zmin > dev_zmax/5.) |
920 |
|
dev_zmin = dev_zmax/5.; |
921 |
|
} |
923 |
|
dev_zmin = odev.v.vfore; |
924 |
|
if (odev.v.vaft > FTINY) |
925 |
|
dev_zmax = odev.v.vaft; |
926 |
< |
if (dev_zmin < dev_zmax/100.) |
927 |
< |
dev_zmin = dev_zmax/100.; |
926 |
> |
if (dev_zmin*500. < dev_zmax) |
927 |
> |
dev_zmin = dev_zmax/500.; |
928 |
|
setzrat(); |
929 |
|
xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz); |
930 |
|
xmin = -xmax; |
944 |
|
odev.v.vp[2] + odev.v.vdir[2], |
945 |
|
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
946 |
|
checkglerr("setting perspective view"); |
898 |
– |
isperspective = 1; |
947 |
|
vec[0] = vec[1] = vec[2] = 0.; vec[3] = 1.; |
948 |
|
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, vec); |
949 |
|
vec[0] = -odev.v.vdir[0]; |
959 |
|
glEnable(GL_LIGHT0); |
960 |
|
glEnable(GL_LIGHTING); /* light our GL objects */ |
961 |
|
glShadeModel(GL_SMOOTH); |
962 |
+ |
viewflags &= ~VWORTHO; |
963 |
+ |
viewflags |= VWPERSP; |
964 |
|
} |
965 |
|
|
966 |
|
|
967 |
< |
static |
968 |
< |
setglortho() /* set up orthographic view for cone drawing */ |
967 |
> |
static void |
968 |
> |
setglortho(void) /* set up orthographic view for cone drawing */ |
969 |
|
{ |
970 |
+ |
glDrawBuffer(GL_FRONT); /* use single-buffer mode */ |
971 |
|
/* set view matrix */ |
972 |
|
glMatrixMode(GL_PROJECTION); |
973 |
|
glLoadIdentity(); |
974 |
|
glOrtho(0., (double)odev.hres, 0., (double)odev.vres, |
975 |
|
0.001*OMAXDEPTH, 1.001*(-OMAXDEPTH)); |
976 |
|
checkglerr("setting orthographic view"); |
926 |
– |
isperspective = 0; |
977 |
|
glDisable(GL_LIGHTING); /* cones are constant color */ |
978 |
|
glShadeModel(GL_FLAT); |
979 |
+ |
viewflags &= ~VWPERSP; |
980 |
+ |
viewflags |= VWORTHO; |
981 |
|
} |
982 |
|
|
983 |
|
|
984 |
< |
static |
985 |
< |
wipeclean() /* prepare for redraw */ |
984 |
> |
static void |
985 |
> |
wipeclean(void) /* prepare for redraw */ |
986 |
|
{ |
987 |
< |
/* clear depth buffer */ |
987 |
> |
glDrawBuffer(GL_BACK); /* use double-buffer mode */ |
988 |
> |
glReadBuffer(GL_BACK); |
989 |
> |
/* clear buffers */ |
990 |
|
#ifdef STEREO |
991 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
992 |
< |
glClear(GL_DEPTH_BUFFER_BIT); |
992 |
> |
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
993 |
|
setstereobuf(STEREO_BUFFER_LEFT); |
994 |
|
#endif |
995 |
< |
glClear(GL_DEPTH_BUFFER_BIT); |
942 |
< |
if (viewsteady) /* clear samples if steady */ |
943 |
< |
odClean(); |
995 |
> |
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
996 |
|
freedepth(); |
997 |
< |
setglpersp(&odev.v); /* reset view & clipping planes */ |
997 |
> |
if ((viewflags&(VWCHANGE|VWSTEADY)) == |
998 |
> |
(VWCHANGE|VWSTEADY)) { /* clear samples if new */ |
999 |
> |
odClean(); |
1000 |
> |
viewflags &= ~VWCHANGE; /* change noted */ |
1001 |
> |
} else if (viewflags & VWSTEADY) |
1002 |
> |
odRedrawAll(); |
1003 |
> |
setglpersp(); /* reset view & clipping planes */ |
1004 |
|
} |
1005 |
|
|
1006 |
|
|
1007 |
< |
static |
1008 |
< |
getkey(ekey) /* get input key */ |
1009 |
< |
register XKeyPressedEvent *ekey; |
1007 |
> |
static void |
1008 |
> |
getkey( /* get input key */ |
1009 |
> |
register XKeyPressedEvent *ekey |
1010 |
> |
) |
1011 |
|
{ |
1012 |
|
Window rootw, childw; |
1013 |
|
int rootx, rooty, wx, wy; |
1020 |
|
return; |
1021 |
|
switch (buf[0]) { |
1022 |
|
case 'h': /* turn on height motion lock */ |
1023 |
< |
headlocked = 1; |
1023 |
> |
viewflags |= VWHEADLOCK; |
1024 |
|
return; |
1025 |
|
case 'H': /* turn off height motion lock */ |
1026 |
< |
headlocked = 0; |
1026 |
> |
viewflags &= ~VWHEADLOCK; |
1027 |
|
return; |
1028 |
|
case 'l': /* retrieve last view */ |
1029 |
|
inpresflags |= DFL(DC_LASTVIEW); |
1051 |
|
inpresflags |= DFL(DC_RESUME); |
1052 |
|
return; |
1053 |
|
case CTRL('R'): /* redraw screen */ |
1054 |
< |
odRemap(0); |
1055 |
< |
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); |
1054 |
> |
odRemap(0); /* new tone mapping */ |
1055 |
> |
glClear(GL_DEPTH_BUFFER_BIT); |
1056 |
|
#ifdef STEREO |
1057 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
1058 |
< |
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); |
1058 |
> |
glClear(GL_DEPTH_BUFFER_BIT); |
1059 |
|
setstereobuf(STEREO_BUFFER_LEFT); |
1060 |
|
#endif |
1061 |
|
return; |
1062 |
|
case CTRL('L'): /* refresh from server */ |
1063 |
|
if (inpresflags & DFL(DC_REDRAW)) |
1064 |
< |
return; |
1064 |
> |
return; /* already called */ |
1065 |
|
XRaiseWindow(ourdisplay, gwind); |
1066 |
< |
XFlush(ourdisplay); |
1067 |
< |
sleep(1); |
1068 |
< |
wipeclean(); /* fresh display */ |
1069 |
< |
odRemap(1); /* fresh tone mapping */ |
1011 |
< |
dev_flush(); /* draw octrees */ |
1066 |
> |
XFlush(ourdisplay); /* raise up window */ |
1067 |
> |
sleep(1); /* wait for restacking */ |
1068 |
> |
dev_clear(); /* clear buffer and samples */ |
1069 |
> |
odRemap(1); /* start fresh histogram */ |
1070 |
|
inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
1013 |
– |
rayqleft = 0; /* hold off update */ |
1071 |
|
return; |
1072 |
|
case 'K': /* kill rtrace process(es) */ |
1073 |
|
inpresflags |= DFL(DC_KILL); |
1088 |
|
} |
1089 |
|
|
1090 |
|
|
1091 |
< |
static |
1092 |
< |
fixwindow(eexp) /* repair damage to window */ |
1093 |
< |
register XExposeEvent *eexp; |
1091 |
> |
static void |
1092 |
> |
fixwindow( /* repair damage to window */ |
1093 |
> |
register XExposeEvent *eexp |
1094 |
> |
) |
1095 |
|
{ |
1096 |
|
int xmin, ymin, xmax, ymax; |
1097 |
|
|
1098 |
< |
if (odev.hres == 0 | odev.vres == 0) { /* first exposure */ |
1098 |
> |
if ((odev.hres == 0) | (odev.vres == 0)) { /* first exposure */ |
1099 |
|
resizewindow((XConfigureEvent *)eexp); |
1100 |
|
return; |
1101 |
|
} |
1102 |
|
xmin = eexp->x; xmax = eexp->x + eexp->width; |
1103 |
|
ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y; |
1104 |
+ |
|
1105 |
+ |
if (xmin <= 0 && xmax >= odev.hres-1 && |
1106 |
+ |
ymin <= 0 && ymax >= odev.vres) { |
1107 |
+ |
DCHECK(eexp->count, WARNING, "multiple clear in fixwindow"); |
1108 |
+ |
wipeclean(); /* make sure we're go */ |
1109 |
+ |
return; |
1110 |
+ |
} |
1111 |
|
/* clear portion of depth */ |
1112 |
|
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
1113 |
|
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |
1134 |
|
} |
1135 |
|
|
1136 |
|
|
1137 |
< |
static |
1138 |
< |
resizewindow(ersz) /* resize window */ |
1139 |
< |
register XConfigureEvent *ersz; |
1137 |
> |
static void |
1138 |
> |
resizewindow( /* resize window */ |
1139 |
> |
register XConfigureEvent *ersz |
1140 |
> |
) |
1141 |
|
{ |
1142 |
|
glViewport(0, 0, ersz->width, ersz->height); |
1143 |
|
|
1151 |
|
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
1152 |
|
|
1153 |
|
inpresflags |= DFL(DC_SETVIEW); |
1154 |
+ |
viewflags |= VWCHANGE; |
1155 |
|
} |