1 |
gwlarson |
3.18 |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
gregl |
3.1 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ SGI"; |
5 |
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#endif |
6 |
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7 |
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/* |
8 |
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* OpenGL GLX driver for holodeck display. |
9 |
gwlarson |
3.19 |
* Based on old GLX driver using cones. |
10 |
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* |
11 |
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* Define symbol STEREO for stereo viewing. |
12 |
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* Define symbol DOBJ for display object viewing. |
13 |
gregl |
3.1 |
*/ |
14 |
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15 |
gwlarson |
3.19 |
#ifdef NOSTEREO |
16 |
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#ifdef STEREO |
17 |
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#undef STEREO |
18 |
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#else |
19 |
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#undef NOSTEREO |
20 |
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#endif |
21 |
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#endif |
22 |
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23 |
gregl |
3.1 |
#include "standard.h" |
24 |
gwlarson |
3.19 |
#include "rhd_sample.h" |
25 |
gregl |
3.1 |
|
26 |
gwlarson |
3.19 |
#include <sys/types.h> |
27 |
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#include <GL/glx.h> |
28 |
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#include <GL/glu.h> |
29 |
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#ifdef STEREO |
30 |
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#include <X11/extensions/SGIStereo.h> |
31 |
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#endif |
32 |
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#ifdef DOBJ |
33 |
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#include "rhdobj.h" |
34 |
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#endif |
35 |
gregl |
3.1 |
|
36 |
gwlarson |
3.19 |
#include "x11icon.h" |
37 |
gregl |
3.1 |
|
38 |
gregl |
3.10 |
#ifndef RAYQLEN |
39 |
gwlarson |
3.19 |
#define RAYQLEN 250 /* max. rays to queue before flush */ |
40 |
gregl |
3.10 |
#endif |
41 |
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42 |
gregl |
3.1 |
#ifndef FEQ |
43 |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
44 |
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#endif |
45 |
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46 |
gregl |
3.2 |
#define GAMMA 1.4 /* default gamma correction */ |
47 |
gregl |
3.1 |
|
48 |
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#define MOVPCT 7 /* percent distance to move /frame */ |
49 |
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#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
50 |
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
51 |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
52 |
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53 |
gwlarson |
3.19 |
#ifndef TARGETFPS |
54 |
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#define TARGETFPS 4.0 /* target frames/sec during motion */ |
55 |
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#endif |
56 |
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57 |
gregl |
3.1 |
#define MINWIDTH 480 /* minimum graphics window width */ |
58 |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
59 |
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60 |
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#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
61 |
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62 |
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#define BORWIDTH 5 /* border width */ |
63 |
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64 |
gwlarson |
3.19 |
#define setstereobuf(bid) (glXWaitGL(), \ |
65 |
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \ |
66 |
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glXWaitX()) |
67 |
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68 |
gregl |
3.1 |
#define ourscreen DefaultScreen(ourdisplay) |
69 |
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#define ourroot RootWindow(ourdisplay,ourscreen) |
70 |
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#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
71 |
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ButtonPressMask|ButtonReleaseMask) |
72 |
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73 |
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#define levptr(etype) ((etype *)¤tevent) |
74 |
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75 |
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struct driver odev; /* global device driver structure */ |
76 |
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77 |
gwlarson |
3.23 |
#ifdef STEREO |
78 |
gwlarson |
3.19 |
static VIEW vwright; /* right eye view */ |
79 |
gwlarson |
3.23 |
#endif |
80 |
gwlarson |
3.19 |
|
81 |
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static int rayqleft = 0; /* rays left to queue before flush */ |
82 |
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83 |
gregl |
3.1 |
static XEvent currentevent; /* current event */ |
84 |
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85 |
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static int mapped = 0; /* window is mapped? */ |
86 |
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static unsigned long ourblack=0, ourwhite=~0; |
87 |
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88 |
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static Display *ourdisplay = NULL; /* our display */ |
89 |
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static XVisualInfo *ourvinf; /* our visual information */ |
90 |
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static Window gwind = 0; /* our graphics window */ |
91 |
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static GLXContext gctx; /* our GLX context */ |
92 |
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93 |
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static double pwidth, pheight; /* pixel dimensions (mm) */ |
94 |
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95 |
gwlarson |
3.19 |
static double mindpth, maxdpth; /* min. and max. depth */ |
96 |
gregl |
3.1 |
|
97 |
gwlarson |
3.19 |
double dev_zmin, dev_zmax; /* fore and aft clipping plane dist. */ |
98 |
gregl |
3.4 |
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99 |
gregl |
3.1 |
static int inpresflags; /* input result flags */ |
100 |
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101 |
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static int headlocked = 0; /* lock vertical motion */ |
102 |
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103 |
gwlarson |
3.19 |
static int resizewindow(), getevent(), getkey(), moveview(), wipeclean(), |
104 |
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setglpersp(), getmove(), fixwindow(), mytmflags(); |
105 |
gregl |
3.1 |
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106 |
gwlarson |
3.19 |
#ifdef STEREO |
107 |
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static int pushright(), popright(); |
108 |
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#endif |
109 |
gregl |
3.1 |
|
110 |
gwlarson |
3.19 |
extern time_t time(); |
111 |
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112 |
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113 |
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dev_open(id) /* initialize GLX driver */ |
114 |
gregl |
3.1 |
char *id; |
115 |
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{ |
116 |
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extern char *getenv(); |
117 |
gregl |
3.15 |
static RGBPRIMS myprims = STDPRIMS; |
118 |
gregl |
3.1 |
static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,8, |
119 |
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GLX_GREEN_SIZE,8, GLX_BLUE_SIZE,8, |
120 |
gregl |
3.4 |
GLX_DEPTH_SIZE,15, None}; |
121 |
gregl |
3.15 |
char *ev; |
122 |
gregl |
3.1 |
double gamval = GAMMA; |
123 |
gregl |
3.15 |
RGBPRIMP dpri = stdprims; |
124 |
gregl |
3.1 |
XSetWindowAttributes ourwinattr; |
125 |
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XWMHints ourxwmhints; |
126 |
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XSizeHints oursizhints; |
127 |
gwlarson |
3.19 |
/* check for unsupported stereo */ |
128 |
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#ifdef NOSTEREO |
129 |
gwlarson |
3.22 |
error(INTERNAL, "stereo display driver unavailable"); |
130 |
gwlarson |
3.19 |
#endif |
131 |
gregl |
3.1 |
/* open display server */ |
132 |
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ourdisplay = XOpenDisplay(NULL); |
133 |
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if (ourdisplay == NULL) |
134 |
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error(USER, "cannot open X-windows; DISPLAY variable set?\n"); |
135 |
gwlarson |
3.19 |
#ifdef STEREO |
136 |
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switch (XSGIQueryStereoMode(ourdisplay, ourroot)) { |
137 |
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case STEREO_TOP: |
138 |
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case STEREO_BOTTOM: |
139 |
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break; |
140 |
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case STEREO_OFF: |
141 |
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error(USER, |
142 |
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"wrong video mode: run \"/usr/gfx/setmon -n STR_TOP\" first"); |
143 |
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case X_STEREO_UNSUPPORTED: |
144 |
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error(USER, "stereo mode not supported on this screen"); |
145 |
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default: |
146 |
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error(INTERNAL, "unknown stereo mode"); |
147 |
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} |
148 |
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#endif |
149 |
gregl |
3.1 |
/* find a usable visual */ |
150 |
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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlBest); |
151 |
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if (ourvinf == NULL) |
152 |
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error(USER, "no suitable visuals available"); |
153 |
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/* get a context */ |
154 |
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gctx = glXCreateContext(ourdisplay, ourvinf, NULL, GL_TRUE); |
155 |
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/* set gamma and tone mapping */ |
156 |
gregl |
3.15 |
if ((ev = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL |
157 |
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|| (ev = getenv("DISPLAY_GAMMA")) != NULL) |
158 |
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gamval = atof(ev); |
159 |
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if ((ev = getenv("DISPLAY_PRIMARIES")) != NULL && |
160 |
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sscanf(ev, "%f %f %f %f %f %f %f %f", |
161 |
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&myprims[RED][CIEX],&myprims[RED][CIEY], |
162 |
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&myprims[GRN][CIEX],&myprims[GRN][CIEY], |
163 |
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&myprims[BLU][CIEX],&myprims[BLU][CIEY], |
164 |
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&myprims[WHT][CIEX],&myprims[WHT][CIEY]) >= 6) |
165 |
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dpri = myprims; |
166 |
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if (tmInit(mytmflags(), dpri, gamval) == NULL) |
167 |
gregl |
3.1 |
error(SYSTEM, "not enough memory in dev_open"); |
168 |
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/* open window */ |
169 |
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ourwinattr.background_pixel = ourblack; |
170 |
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ourwinattr.border_pixel = ourblack; |
171 |
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ourwinattr.event_mask = ourmask; |
172 |
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/* this is stupid */ |
173 |
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ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
174 |
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ourvinf->visual, AllocNone); |
175 |
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gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
176 |
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DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
177 |
gwlarson |
3.19 |
#ifdef STEREO |
178 |
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(DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH)/2, |
179 |
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#else |
180 |
gregl |
3.1 |
DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
181 |
gwlarson |
3.19 |
#endif |
182 |
gregl |
3.1 |
BORWIDTH, ourvinf->depth, InputOutput, ourvinf->visual, |
183 |
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CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr); |
184 |
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if (gwind == 0) |
185 |
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error(SYSTEM, "cannot create window\n"); |
186 |
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XStoreName(ourdisplay, gwind, id); |
187 |
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/* set window manager hints */ |
188 |
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ourxwmhints.flags = InputHint|IconPixmapHint; |
189 |
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ourxwmhints.input = True; |
190 |
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ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, |
191 |
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gwind, x11icon_bits, x11icon_width, x11icon_height); |
192 |
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XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
193 |
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oursizhints.min_width = MINWIDTH; |
194 |
gwlarson |
3.19 |
#ifdef STEREO |
195 |
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oursizhints.min_height = MINHEIGHT/2; |
196 |
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oursizhints.max_width = DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH; |
197 |
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oursizhints.max_height = (DisplayHeight(ourdisplay,ourscreen) - |
198 |
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2*BORWIDTH)/2; |
199 |
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oursizhints.flags = PMinSize|PMaxSize; |
200 |
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#else |
201 |
gregl |
3.1 |
oursizhints.min_height = MINHEIGHT; |
202 |
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oursizhints.flags = PMinSize; |
203 |
gwlarson |
3.19 |
#endif |
204 |
gregl |
3.1 |
XSetNormalHints(ourdisplay, gwind, &oursizhints); |
205 |
gregl |
3.2 |
/* set GLX context */ |
206 |
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glXMakeCurrent(ourdisplay, gwind, gctx); |
207 |
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glEnable(GL_DEPTH_TEST); |
208 |
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glDepthFunc(GL_LEQUAL); |
209 |
gwlarson |
3.19 |
glShadeModel(GL_SMOOTH); |
210 |
gregl |
3.2 |
glDisable(GL_DITHER); |
211 |
gregl |
3.4 |
glDisable(GL_CULL_FACE); |
212 |
gregl |
3.1 |
/* figure out sensible view */ |
213 |
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
214 |
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DisplayWidth(ourdisplay, ourscreen); |
215 |
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pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) / |
216 |
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DisplayHeight(ourdisplay, ourscreen); |
217 |
gwlarson |
3.19 |
#ifdef STEREO |
218 |
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pheight *= 2.; |
219 |
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setstereobuf(STEREO_BUFFER_LEFT); |
220 |
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#endif |
221 |
gwlarson |
3.23 |
checkglerr("setting rendering parameters"); |
222 |
gregl |
3.1 |
copystruct(&odev.v, &stdview); |
223 |
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odev.v.type = VT_PER; |
224 |
gregl |
3.2 |
/* map the window */ |
225 |
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XMapWindow(ourdisplay, gwind); |
226 |
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dev_input(); /* sets size and view angles */ |
227 |
gwlarson |
3.19 |
/* allocate our samples */ |
228 |
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if (!smInit(DisplayWidth(ourdisplay,ourscreen) * |
229 |
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DisplayHeight(ourdisplay,ourscreen) / 10)) |
230 |
gregl |
3.2 |
error(SYSTEM, "insufficient memory for value storage"); |
231 |
gwlarson |
3.19 |
mindpth = FHUGE; maxdpth = FTINY; |
232 |
gregl |
3.1 |
odev.name = id; |
233 |
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odev.ifd = ConnectionNumber(ourdisplay); |
234 |
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} |
235 |
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236 |
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237 |
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dev_close() /* close our display and free resources */ |
238 |
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{ |
239 |
gwlarson |
3.19 |
smInit(0); |
240 |
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#ifdef DOBJ |
241 |
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dobj_cleanup(); |
242 |
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#endif |
243 |
gregl |
3.1 |
glXMakeCurrent(ourdisplay, None, NULL); |
244 |
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glXDestroyContext(ourdisplay, gctx); |
245 |
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XDestroyWindow(ourdisplay, gwind); |
246 |
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gwind = 0; |
247 |
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XCloseDisplay(ourdisplay); |
248 |
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ourdisplay = NULL; |
249 |
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tmDone(NULL); |
250 |
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odev.v.type = 0; |
251 |
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odev.hres = odev.vres = 0; |
252 |
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odev.ifd = -1; |
253 |
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} |
254 |
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255 |
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256 |
gwlarson |
3.19 |
dev_clear() /* clear our representation */ |
257 |
gregl |
3.14 |
{ |
258 |
gwlarson |
3.19 |
smInit(rsL.max_samp); |
259 |
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wipeclean(); |
260 |
gregl |
3.14 |
rayqleft = 0; /* hold off update */ |
261 |
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} |
262 |
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263 |
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264 |
gregl |
3.1 |
int |
265 |
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dev_view(nv) /* assign new driver view */ |
266 |
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register VIEW *nv; |
267 |
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{ |
268 |
gwlarson |
3.19 |
double d; |
269 |
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270 |
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if (nv->type != VT_PER || /* check view legality */ |
271 |
gregl |
3.4 |
nv->horiz > 160. || nv->vert > 160.) { |
272 |
gregl |
3.1 |
error(COMMAND, "illegal view type/angle"); |
273 |
gregl |
3.4 |
nv->type = odev.v.type; |
274 |
gregl |
3.1 |
nv->horiz = odev.v.horiz; |
275 |
|
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nv->vert = odev.v.vert; |
276 |
|
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return(0); |
277 |
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} |
278 |
gwlarson |
3.22 |
if (nv != &odev.v) { |
279 |
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/* resize window? */ |
280 |
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if (!FEQ(nv->horiz,odev.v.horiz) || |
281 |
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!FEQ(nv->vert,odev.v.vert)) { |
282 |
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int dw = DisplayWidth(ourdisplay,ourscreen); |
283 |
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int dh = DisplayHeight(ourdisplay,ourscreen); |
284 |
gregl |
3.1 |
|
285 |
gwlarson |
3.22 |
dw -= 25; /* for window frame */ |
286 |
|
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dh -= 50; |
287 |
gwlarson |
3.19 |
#ifdef STEREO |
288 |
gwlarson |
3.22 |
dh /= 2; |
289 |
gwlarson |
3.19 |
#endif |
290 |
gwlarson |
3.22 |
odev.hres = 2.*VIEWDIST/pwidth * |
291 |
|
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tan(PI/180./2.*nv->horiz); |
292 |
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odev.vres = 2.*VIEWDIST/pheight * |
293 |
|
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tan(PI/180./2.*nv->vert); |
294 |
|
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if (odev.hres > dw) { |
295 |
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odev.vres = dw * odev.vres / odev.hres; |
296 |
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odev.hres = dw; |
297 |
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} |
298 |
|
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if (odev.vres > dh) { |
299 |
|
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odev.hres = dh * odev.hres / odev.vres; |
300 |
|
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odev.vres = dh; |
301 |
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} |
302 |
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XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
303 |
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dev_input(); /* get resize event */ |
304 |
gregl |
3.1 |
} |
305 |
gwlarson |
3.22 |
copystruct(&odev.v, nv); /* setview() already called */ |
306 |
gwlarson |
3.19 |
#ifdef STEREO |
307 |
gwlarson |
3.22 |
copystruct(&vwright, nv); |
308 |
|
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d = eyesepdist / sqrt(nv->hn2); |
309 |
|
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VSUM(vwright.vp, nv->vp, nv->hvec, d); |
310 |
|
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/* setview(&vwright); -- Unnecessary */ |
311 |
gwlarson |
3.19 |
#endif |
312 |
gwlarson |
3.22 |
} |
313 |
gwlarson |
3.19 |
wipeclean(); |
314 |
gregl |
3.1 |
return(1); |
315 |
gwlarson |
3.18 |
} |
316 |
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317 |
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318 |
|
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dev_auxcom(cmd, args) /* process an auxiliary command */ |
319 |
|
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char *cmd, *args; |
320 |
|
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{ |
321 |
gwlarson |
3.19 |
#ifdef DOBJ |
322 |
|
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if (dobj_command(cmd, args) >= 0) |
323 |
|
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return; |
324 |
|
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#endif |
325 |
gwlarson |
3.18 |
sprintf(errmsg, "%s: unknown command", cmd); |
326 |
|
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error(COMMAND, errmsg); |
327 |
gregl |
3.1 |
} |
328 |
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329 |
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330 |
gwlarson |
3.17 |
VIEW * |
331 |
|
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dev_auxview(n, hvres) /* return nth auxiliary view */ |
332 |
|
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int n; |
333 |
|
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int hvres[2]; |
334 |
|
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{ |
335 |
|
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hvres[0] = odev.hres; hvres[1] = odev.vres; |
336 |
gwlarson |
3.19 |
if (n == 0) |
337 |
|
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return(&odev.v); |
338 |
|
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#ifdef STEREO |
339 |
|
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if (n == 1) |
340 |
|
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return(&vwright); |
341 |
|
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#endif |
342 |
|
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return(NULL); |
343 |
gwlarson |
3.17 |
} |
344 |
|
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|
345 |
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|
346 |
gregl |
3.1 |
int |
347 |
|
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dev_input() /* get X11 input */ |
348 |
|
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{ |
349 |
|
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inpresflags = 0; |
350 |
|
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|
351 |
|
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do |
352 |
|
|
getevent(); |
353 |
|
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|
354 |
gwlarson |
3.19 |
while (XPending(ourdisplay) > 0); |
355 |
gregl |
3.1 |
|
356 |
gwlarson |
3.19 |
odev.inpready = 0; |
357 |
|
|
|
358 |
gregl |
3.1 |
return(inpresflags); |
359 |
|
|
} |
360 |
|
|
|
361 |
|
|
|
362 |
gwlarson |
3.19 |
dev_value(c, d, p) /* add a pixel value to our mesh */ |
363 |
|
|
COLR c; |
364 |
|
|
FVECT d, p; |
365 |
|
|
{ |
366 |
|
|
double depth; |
367 |
|
|
#ifdef DOBJ |
368 |
|
|
if (dobj_lightsamp != NULL) { /* in light source sampling */ |
369 |
|
|
(*dobj_lightsamp)(c, d, p); |
370 |
|
|
return; |
371 |
|
|
} |
372 |
|
|
#endif |
373 |
gwlarson |
3.22 |
if (p != NULL) { /* add depth to our range */ |
374 |
gwlarson |
3.19 |
depth = (p[0] - odev.v.vp[0])*d[0] + |
375 |
|
|
(p[1] - odev.v.vp[1])*d[1] + |
376 |
|
|
(p[2] - odev.v.vp[2])*d[2]; |
377 |
|
|
if (depth > FTINY) { |
378 |
|
|
if (depth < mindpth) |
379 |
|
|
mindpth = depth; |
380 |
|
|
if (depth > maxdpth) |
381 |
|
|
maxdpth = depth; |
382 |
|
|
} |
383 |
|
|
} |
384 |
gwlarson |
3.22 |
smNewSamp(c, d, p); /* add to display representation */ |
385 |
gwlarson |
3.19 |
if (!--rayqleft) |
386 |
|
|
dev_flush(); /* flush output */ |
387 |
|
|
} |
388 |
|
|
|
389 |
|
|
|
390 |
gregl |
3.4 |
int |
391 |
|
|
dev_flush() /* flush output */ |
392 |
gregl |
3.1 |
{ |
393 |
gwlarson |
3.22 |
if (mapped) { |
394 |
gwlarson |
3.19 |
#ifdef STEREO |
395 |
gwlarson |
3.22 |
pushright(); /* update right eye */ |
396 |
|
|
smUpdate(&vwright, 100); |
397 |
gwlarson |
3.19 |
#ifdef DOBJ |
398 |
gwlarson |
3.22 |
dobj_render(); /* usually in foreground */ |
399 |
gwlarson |
3.19 |
#endif |
400 |
gwlarson |
3.22 |
popright(); /* update left eye */ |
401 |
gwlarson |
3.19 |
#endif |
402 |
gwlarson |
3.22 |
smUpdate(&odev.v, 100); |
403 |
|
|
checkglerr("rendering mesh"); |
404 |
gwlarson |
3.19 |
#ifdef DOBJ |
405 |
gwlarson |
3.22 |
dobj_render(); |
406 |
gwlarson |
3.19 |
#endif |
407 |
gwlarson |
3.22 |
glFlush(); /* flush OGL */ |
408 |
|
|
} |
409 |
gregl |
3.10 |
rayqleft = RAYQLEN; |
410 |
gwlarson |
3.19 |
/* flush X11 and return # pending */ |
411 |
|
|
return(odev.inpready = XPending(ourdisplay)); |
412 |
gregl |
3.1 |
} |
413 |
|
|
|
414 |
|
|
|
415 |
gwlarson |
3.19 |
checkglerr(where) /* check for GL or GLU error */ |
416 |
|
|
char *where; |
417 |
gregl |
3.1 |
{ |
418 |
gwlarson |
3.19 |
register GLenum errcode; |
419 |
|
|
|
420 |
|
|
while ((errcode = glGetError()) != GL_NO_ERROR) { |
421 |
|
|
sprintf(errmsg, "OpenGL error %s: %s", |
422 |
|
|
where, gluErrorString(errcode)); |
423 |
|
|
error(WARNING, errmsg); |
424 |
gregl |
3.1 |
} |
425 |
|
|
} |
426 |
|
|
|
427 |
|
|
|
428 |
gwlarson |
3.19 |
#ifdef STEREO |
429 |
|
|
static |
430 |
|
|
pushright() /* push on right view */ |
431 |
|
|
{ |
432 |
|
|
double d; |
433 |
|
|
|
434 |
|
|
setstereobuf(STEREO_BUFFER_RIGHT); |
435 |
|
|
glMatrixMode(GL_MODELVIEW); |
436 |
|
|
glPushMatrix(); |
437 |
|
|
d = -eyesepdist / sqrt(odev.v.hn2); |
438 |
|
|
glTranslated(d*odev.v.hvec[0], d*odev.v.hvec[1], d*odev.v.hvec[2]); |
439 |
gwlarson |
3.23 |
checkglerr("setting right view"); |
440 |
gwlarson |
3.19 |
} |
441 |
|
|
|
442 |
|
|
|
443 |
|
|
static |
444 |
|
|
popright() /* pop off right view */ |
445 |
|
|
{ |
446 |
|
|
glMatrixMode(GL_MODELVIEW); |
447 |
|
|
glPopMatrix(); |
448 |
|
|
setstereobuf(STEREO_BUFFER_LEFT); |
449 |
|
|
} |
450 |
|
|
#endif |
451 |
|
|
|
452 |
|
|
|
453 |
gregl |
3.1 |
static int |
454 |
|
|
mytmflags() /* figure out tone mapping flags */ |
455 |
|
|
{ |
456 |
|
|
extern char *progname; |
457 |
|
|
register char *cp, *tail; |
458 |
|
|
/* find basic name */ |
459 |
|
|
for (cp = tail = progname; *cp; cp++) |
460 |
|
|
if (*cp == '/') |
461 |
|
|
tail = cp+1; |
462 |
|
|
for (cp = tail; *cp && *cp != '.'; cp++) |
463 |
|
|
; |
464 |
gwlarson |
3.19 |
if (cp > tail && cp[-1] == 'h') |
465 |
|
|
return(TM_F_HUMAN|TM_F_NOSTDERR); |
466 |
|
|
else |
467 |
gregl |
3.10 |
return(TM_F_CAMERA|TM_F_NOSTDERR); |
468 |
gregl |
3.1 |
} |
469 |
|
|
|
470 |
|
|
|
471 |
|
|
static |
472 |
|
|
getevent() /* get next event */ |
473 |
|
|
{ |
474 |
|
|
XNextEvent(ourdisplay, levptr(XEvent)); |
475 |
|
|
switch (levptr(XEvent)->type) { |
476 |
|
|
case ConfigureNotify: |
477 |
|
|
resizewindow(levptr(XConfigureEvent)); |
478 |
|
|
break; |
479 |
|
|
case UnmapNotify: |
480 |
|
|
mapped = 0; |
481 |
|
|
break; |
482 |
|
|
case MapNotify: |
483 |
|
|
mapped = 1; |
484 |
|
|
break; |
485 |
|
|
case Expose: |
486 |
|
|
fixwindow(levptr(XExposeEvent)); |
487 |
|
|
break; |
488 |
|
|
case KeyPress: |
489 |
|
|
getkey(levptr(XKeyPressedEvent)); |
490 |
|
|
break; |
491 |
|
|
case ButtonPress: |
492 |
|
|
getmove(levptr(XButtonPressedEvent)); |
493 |
|
|
break; |
494 |
|
|
} |
495 |
|
|
} |
496 |
|
|
|
497 |
|
|
|
498 |
|
|
static |
499 |
|
|
draw3dline(wp) /* draw 3d line in world coordinates */ |
500 |
|
|
register FVECT wp[2]; |
501 |
|
|
{ |
502 |
|
|
glVertex3d(wp[0][0], wp[0][1], wp[0][2]); |
503 |
|
|
glVertex3d(wp[1][0], wp[1][1], wp[1][2]); |
504 |
|
|
} |
505 |
|
|
|
506 |
|
|
|
507 |
|
|
static |
508 |
gwlarson |
3.22 |
draw_grids(fore) /* draw holodeck section grids */ |
509 |
|
|
int fore; |
510 |
gregl |
3.1 |
{ |
511 |
gwlarson |
3.22 |
if (fore) |
512 |
|
|
glColor4ub(0, 255, 255, 0); |
513 |
|
|
else |
514 |
|
|
glColor4ub(0, 0, 0, 0); |
515 |
gregl |
3.4 |
glBegin(GL_LINES); /* draw each grid line */ |
516 |
gregl |
3.1 |
gridlines(draw3dline); |
517 |
|
|
glEnd(); |
518 |
gwlarson |
3.23 |
checkglerr("drawing grid lines"); |
519 |
gregl |
3.1 |
} |
520 |
|
|
|
521 |
|
|
|
522 |
|
|
static |
523 |
|
|
moveview(dx, dy, mov, orb) /* move our view */ |
524 |
|
|
int dx, dy, mov, orb; |
525 |
|
|
{ |
526 |
|
|
VIEW nv; |
527 |
gwlarson |
3.19 |
FVECT odir, v1, wip; |
528 |
gregl |
3.1 |
double d; |
529 |
|
|
register int li; |
530 |
|
|
/* start with old view */ |
531 |
|
|
copystruct(&nv, &odev.v); |
532 |
gwlarson |
3.22 |
/* orient our motion */ |
533 |
gwlarson |
3.19 |
if (viewray(v1, odir, &odev.v, |
534 |
|
|
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
535 |
|
|
return(0); /* outside view */ |
536 |
gwlarson |
3.22 |
if (mov | orb) { /* moving relative to geometry */ |
537 |
gwlarson |
3.19 |
#ifdef DOBJ |
538 |
gwlarson |
3.21 |
d = dobj_trace(NULL, v1, odir); /* check objects */ |
539 |
gwlarson |
3.22 |
/* check holodeck */ |
540 |
|
|
if ((li = smFindSamp(v1, odir)) >= 0) { |
541 |
gwlarson |
3.19 |
VCOPY(wip, rsL.wp[li]); |
542 |
gwlarson |
3.22 |
if (d < .99*FHUGE && d*d <= dist2(v1, wip)) |
543 |
|
|
li = -1; /* object is closer */ |
544 |
|
|
} else if (d >= .99*FHUGE) |
545 |
|
|
return(0); /* nothing visible */ |
546 |
|
|
if (li < 0) |
547 |
|
|
VSUM(wip, v1, odir, d); /* else get object point */ |
548 |
gwlarson |
3.19 |
#else |
549 |
|
|
if ((li = smFindSamp(v1, odir)) < 0) |
550 |
gregl |
3.1 |
return(0); /* not on window */ |
551 |
gwlarson |
3.19 |
VCOPY(wip, rsL.wp[li]); |
552 |
|
|
#endif |
553 |
gwlarson |
3.22 |
VSUM(odir, wip, odev.v.vp, -1.); |
554 |
|
|
} else /* panning with constant viewpoint */ |
555 |
gwlarson |
3.19 |
VCOPY(nv.vdir, odir); |
556 |
gregl |
3.1 |
if (orb && mov) { /* orbit left/right */ |
557 |
|
|
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov); |
558 |
gwlarson |
3.19 |
VSUM(nv.vp, wip, odir, -1.); |
559 |
gregl |
3.1 |
spinvector(nv.vdir, nv.vdir, nv.vup, d); |
560 |
|
|
} else if (orb) { /* orbit up/down */ |
561 |
|
|
fcross(v1, odir, nv.vup); |
562 |
|
|
if (normalize(v1) == 0.) |
563 |
|
|
return(0); |
564 |
|
|
spinvector(odir, odir, v1, d=MOVDEG*PI/180.*orb); |
565 |
gwlarson |
3.19 |
VSUM(nv.vp, wip, odir, -1.); |
566 |
gregl |
3.1 |
spinvector(nv.vdir, nv.vdir, v1, d); |
567 |
|
|
} else if (mov) { /* move forward/backward */ |
568 |
|
|
d = MOVPCT/100. * mov; |
569 |
|
|
VSUM(nv.vp, nv.vp, odir, d); |
570 |
|
|
} |
571 |
|
|
if (!mov ^ !orb && headlocked) { /* restore head height */ |
572 |
|
|
VSUM(v1, odev.v.vp, nv.vp, -1.); |
573 |
gwlarson |
3.22 |
d = DOT(v1, nv.vup); |
574 |
gregl |
3.1 |
VSUM(nv.vp, nv.vp, odev.v.vup, d); |
575 |
|
|
} |
576 |
|
|
if (setview(&nv) != NULL) |
577 |
|
|
return(0); /* illegal view */ |
578 |
|
|
dev_view(&nv); |
579 |
|
|
inpresflags |= DFL(DC_SETVIEW); |
580 |
|
|
return(1); |
581 |
|
|
} |
582 |
|
|
|
583 |
|
|
|
584 |
|
|
static |
585 |
|
|
getmove(ebut) /* get view change */ |
586 |
|
|
XButtonPressedEvent *ebut; |
587 |
|
|
{ |
588 |
|
|
int movdir = MOVDIR(ebut->button); |
589 |
|
|
int movorb = MOVORB(ebut->state); |
590 |
gwlarson |
3.19 |
int qlevel = 99; |
591 |
|
|
time_t lasttime, thistime; |
592 |
|
|
int nframes; |
593 |
gregl |
3.1 |
Window rootw, childw; |
594 |
|
|
int rootx, rooty, wx, wy; |
595 |
|
|
unsigned int statemask; |
596 |
|
|
|
597 |
gwlarson |
3.23 |
XNoOp(ourdisplay); /* makes sure we're not idle */ |
598 |
gregl |
3.1 |
|
599 |
gwlarson |
3.19 |
lasttime = time(0); nframes = 0; |
600 |
gregl |
3.1 |
while (!XCheckMaskEvent(ourdisplay, |
601 |
|
|
ButtonReleaseMask, levptr(XEvent))) { |
602 |
gwlarson |
3.23 |
/* get cursor position */ |
603 |
gregl |
3.1 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
604 |
|
|
&rootx, &rooty, &wx, &wy, &statemask)) |
605 |
|
|
break; /* on another screen */ |
606 |
|
|
|
607 |
gwlarson |
3.22 |
draw_grids(0); /* clear old grid lines */ |
608 |
gwlarson |
3.23 |
#ifdef STEREO |
609 |
|
|
pushright(); draw_grids(0); popright(); |
610 |
|
|
#endif |
611 |
|
|
/* compute view motion */ |
612 |
gregl |
3.1 |
if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) { |
613 |
|
|
sleep(1); |
614 |
gwlarson |
3.19 |
lasttime++; |
615 |
gwlarson |
3.23 |
continue; /* cursor in bad place */ |
616 |
gregl |
3.1 |
} |
617 |
gwlarson |
3.23 |
draw_grids(1); /* redraw grid */ |
618 |
gwlarson |
3.19 |
#ifdef STEREO |
619 |
|
|
pushright(); |
620 |
gwlarson |
3.22 |
draw_grids(1); |
621 |
gwlarson |
3.19 |
smUpdate(&vwright, qlevel); |
622 |
|
|
#ifdef DOBJ |
623 |
|
|
dobj_render(); |
624 |
|
|
#endif |
625 |
|
|
popright(); |
626 |
|
|
#endif |
627 |
gwlarson |
3.23 |
/* redraw mesh */ |
628 |
gwlarson |
3.19 |
smUpdate(&odev.v, qlevel); |
629 |
|
|
#ifdef DOBJ |
630 |
gwlarson |
3.23 |
dobj_render(); /* redraw object */ |
631 |
gwlarson |
3.19 |
#endif |
632 |
gregl |
3.4 |
glFlush(); |
633 |
gwlarson |
3.23 |
nframes++; /* figure out good quality level */ |
634 |
gwlarson |
3.19 |
thistime = time(0); |
635 |
|
|
if (thistime - lasttime >= 3 || |
636 |
|
|
nframes > (int)(3*3*TARGETFPS)) { |
637 |
|
|
qlevel = thistime<=lasttime ? 1000 : |
638 |
|
|
(int)((double)nframes/(thistime-lasttime) |
639 |
|
|
/ TARGETFPS * qlevel + 0.5); |
640 |
|
|
lasttime = thistime; nframes = 0; |
641 |
|
|
if (qlevel > 99) { |
642 |
|
|
if (qlevel > 300) { /* put on the brakes */ |
643 |
|
|
sleep(1); |
644 |
|
|
lasttime++; |
645 |
|
|
} |
646 |
|
|
qlevel = 99; |
647 |
|
|
} else if (qlevel < 1) |
648 |
|
|
qlevel = 1; |
649 |
|
|
} |
650 |
gregl |
3.1 |
} |
651 |
|
|
if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */ |
652 |
|
|
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
653 |
|
|
wx = levptr(XButtonReleasedEvent)->x; |
654 |
|
|
wy = levptr(XButtonReleasedEvent)->y; |
655 |
|
|
moveview(wx, odev.vres-1-wy, movdir, movorb); |
656 |
|
|
} |
657 |
gwlarson |
3.19 |
} |
658 |
gregl |
3.4 |
|
659 |
gwlarson |
3.19 |
|
660 |
|
|
static |
661 |
|
|
setglpersp(vp) /* set perspective view in GL */ |
662 |
|
|
register VIEW *vp; |
663 |
|
|
{ |
664 |
|
|
double d, xmin, xmax, ymin, ymax; |
665 |
|
|
|
666 |
|
|
if (mindpth >= maxdpth) { |
667 |
|
|
dev_zmin = 0.1; |
668 |
|
|
dev_zmax = 100.; |
669 |
|
|
} else { |
670 |
|
|
dev_zmin = 0.5*mindpth; |
671 |
|
|
dev_zmax = 1.5*maxdpth; |
672 |
|
|
if (dev_zmin > dev_zmax/100.) |
673 |
|
|
dev_zmin = dev_zmax/100.; |
674 |
|
|
} |
675 |
|
|
if (odev.v.vfore > FTINY) |
676 |
|
|
dev_zmin = odev.v.vfore; |
677 |
|
|
if (odev.v.vaft > FTINY) |
678 |
|
|
dev_zmax = odev.v.vaft; |
679 |
|
|
if (dev_zmin < dev_zmax/5000.) |
680 |
|
|
dev_zmin = dev_zmax/5000.; |
681 |
|
|
xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz); |
682 |
|
|
xmin = -xmax; |
683 |
|
|
d = odev.v.hoff * (xmax - xmin); |
684 |
|
|
xmin += d; xmax += d; |
685 |
|
|
ymax = dev_zmin * tan(PI/180./2. * odev.v.vert); |
686 |
|
|
ymin = -ymax; |
687 |
|
|
d = odev.v.voff * (ymax - ymin); |
688 |
|
|
ymin += d; ymax += d; |
689 |
|
|
/* set view matrix */ |
690 |
|
|
glMatrixMode(GL_PROJECTION); |
691 |
|
|
glLoadIdentity(); |
692 |
|
|
glFrustum(xmin, xmax, ymin, ymax, dev_zmin, dev_zmax); |
693 |
|
|
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2], |
694 |
|
|
odev.v.vp[0] + odev.v.vdir[0], |
695 |
|
|
odev.v.vp[1] + odev.v.vdir[1], |
696 |
|
|
odev.v.vp[2] + odev.v.vdir[2], |
697 |
|
|
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
698 |
gwlarson |
3.23 |
checkglerr("setting perspective view"); |
699 |
gregl |
3.1 |
} |
700 |
|
|
|
701 |
|
|
|
702 |
|
|
static |
703 |
gwlarson |
3.19 |
wipeclean() /* prepare for redraw */ |
704 |
|
|
{ |
705 |
gwlarson |
3.22 |
/* clear depth buffer */ |
706 |
gwlarson |
3.19 |
#ifdef STEREO |
707 |
|
|
setstereobuf(STEREO_BUFFER_RIGHT); |
708 |
|
|
glClear(GL_DEPTH_BUFFER_BIT); |
709 |
|
|
setstereobuf(STEREO_BUFFER_LEFT); |
710 |
|
|
#endif |
711 |
|
|
glClear(GL_DEPTH_BUFFER_BIT); |
712 |
gwlarson |
3.22 |
smClean(); /* reset drawing routines */ |
713 |
|
|
setglpersp(&odev.v); /* reset view & clipping planes */ |
714 |
gwlarson |
3.19 |
} |
715 |
|
|
|
716 |
|
|
|
717 |
|
|
static |
718 |
gregl |
3.1 |
getkey(ekey) /* get input key */ |
719 |
|
|
register XKeyPressedEvent *ekey; |
720 |
|
|
{ |
721 |
|
|
int n; |
722 |
|
|
char buf[8]; |
723 |
|
|
|
724 |
|
|
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
725 |
|
|
if (n != 1) |
726 |
|
|
return; |
727 |
|
|
switch (buf[0]) { |
728 |
|
|
case 'h': /* turn on height motion lock */ |
729 |
|
|
headlocked = 1; |
730 |
|
|
return; |
731 |
|
|
case 'H': /* turn off height motion lock */ |
732 |
|
|
headlocked = 0; |
733 |
|
|
return; |
734 |
|
|
case 'l': /* retrieve last view */ |
735 |
|
|
inpresflags |= DFL(DC_LASTVIEW); |
736 |
|
|
return; |
737 |
|
|
case 'p': /* pause computation */ |
738 |
|
|
inpresflags |= DFL(DC_PAUSE); |
739 |
|
|
return; |
740 |
|
|
case 'v': /* spit out view */ |
741 |
|
|
inpresflags |= DFL(DC_GETVIEW); |
742 |
|
|
return; |
743 |
|
|
case '\n': |
744 |
|
|
case '\r': /* resume computation */ |
745 |
|
|
inpresflags |= DFL(DC_RESUME); |
746 |
|
|
return; |
747 |
|
|
case CTRL('R'): /* redraw screen */ |
748 |
gwlarson |
3.19 |
wipeclean(); |
749 |
gregl |
3.1 |
return; |
750 |
|
|
case CTRL('L'): /* refresh from server */ |
751 |
|
|
if (inpresflags & DFL(DC_REDRAW)) |
752 |
|
|
return; |
753 |
gwlarson |
3.23 |
setglpersp(&odev.v); /* reset clipping planes */ |
754 |
gregl |
3.1 |
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
755 |
gwlarson |
3.23 |
glDisable(GL_DEPTH_TEST); /* so grids will clear */ |
756 |
gwlarson |
3.22 |
draw_grids(1); |
757 |
gwlarson |
3.19 |
#ifdef STEREO |
758 |
|
|
pushright(); |
759 |
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
760 |
gwlarson |
3.22 |
draw_grids(1); |
761 |
gwlarson |
3.19 |
popright(); |
762 |
|
|
#endif |
763 |
|
|
glEnable(GL_DEPTH_TEST); |
764 |
gregl |
3.1 |
glFlush(); |
765 |
gwlarson |
3.19 |
smInit(rsL.max_samp); /* get rid of old values */ |
766 |
gregl |
3.1 |
inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
767 |
gregl |
3.13 |
rayqleft = 0; /* hold off update */ |
768 |
gregl |
3.1 |
return; |
769 |
|
|
case 'K': /* kill rtrace process(es) */ |
770 |
|
|
inpresflags |= DFL(DC_KILL); |
771 |
|
|
break; |
772 |
|
|
case 'R': /* restart rtrace */ |
773 |
|
|
inpresflags |= DFL(DC_RESTART); |
774 |
|
|
break; |
775 |
|
|
case 'C': /* clobber holodeck */ |
776 |
|
|
inpresflags |= DFL(DC_CLOBBER); |
777 |
|
|
break; |
778 |
|
|
case 'q': /* quit the program */ |
779 |
|
|
inpresflags |= DFL(DC_QUIT); |
780 |
|
|
return; |
781 |
|
|
default: |
782 |
|
|
XBell(ourdisplay, 0); |
783 |
|
|
return; |
784 |
|
|
} |
785 |
|
|
} |
786 |
|
|
|
787 |
|
|
|
788 |
|
|
static |
789 |
|
|
fixwindow(eexp) /* repair damage to window */ |
790 |
|
|
register XExposeEvent *eexp; |
791 |
|
|
{ |
792 |
gwlarson |
3.19 |
if (odev.hres == 0 | odev.vres == 0) { /* first exposure */ |
793 |
gregl |
3.2 |
resizewindow((XConfigureEvent *)eexp); |
794 |
gwlarson |
3.19 |
return; |
795 |
|
|
} |
796 |
|
|
if (eexp->count) /* wait for final exposure */ |
797 |
|
|
return; |
798 |
|
|
wipeclean(); /* clear depth */ |
799 |
gregl |
3.1 |
} |
800 |
|
|
|
801 |
|
|
|
802 |
|
|
static |
803 |
|
|
resizewindow(ersz) /* resize window */ |
804 |
|
|
register XConfigureEvent *ersz; |
805 |
|
|
{ |
806 |
gregl |
3.6 |
glViewport(0, 0, ersz->width, ersz->height); |
807 |
|
|
|
808 |
gregl |
3.1 |
if (ersz->width == odev.hres && ersz->height == odev.vres) |
809 |
|
|
return; |
810 |
|
|
|
811 |
|
|
odev.hres = ersz->width; |
812 |
|
|
odev.vres = ersz->height; |
813 |
|
|
|
814 |
|
|
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
815 |
|
|
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
816 |
|
|
|
817 |
|
|
inpresflags |= DFL(DC_SETVIEW); |
818 |
|
|
} |