1 /*
2 * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included
12 * in all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 */
21 /* $XFree86: xc/programs/glxgears/glxgears.c,v 1.3tsi Exp $ */
22
23 /*
24 * This is a port of the infamous "gears" demo to straight GLX (i.e. no GLUT)
25 * Port by Brian Paul 23 March 2001
26 *
27 * Exact timing added by Behdad Esfahbod to achieve a fixed speed regardless
28 * of frame rate. November 2003
29 *
30 * Printer support added by Roland Mainz <roland.mainz@nrubsig.org>. April 2004
31 *
32 * This version modified by Ian Smith, 30 Sept 2007, to make ubgears.
33 * ubgears is cusoimised for use in the UnixBench benchmarking suite.
34 * Some redundant stuff is gone, and the -time option is added.
35 * Mainly it's forked so we don't use the host's version, which could change
36 * from platform to platform.
37 *
38 * Command line options:
39 * -display Set X11 display for output.
40 * -info Print additional GLX information.
41 * -time <t> Run for <t> seconds and produce a performance report.
42 * -h Print this help page.
43 * -v Verbose output.
44 *
45 */
46
47
48 #include <X11/Xlib.h>
49 #include <X11/Xutil.h>
50 #include <X11/keysym.h>
51 #include <GL/gl.h>
52 #include <GL/glx.h>
53 #include <sys/time.h>
54 #include <sched.h>
55 #include <math.h>
56 #include <stdlib.h>
57 #include <stdio.h>
58 #include <errno.h>
59 #include <string.h>
60
61 #ifndef M_PI
62 #define M_PI 3.14159265
63 #endif /* !M_PI */
64
65 /* Turn a NULL pointer string into an empty string */
66 #define NULLSTR(x) (((x)!=NULL)?(x):(""))
67 #define Log(x) { if(verbose) printf x; }
68 #define Msg(x) { printf x; }
69
70 /* Globla vars */
71 /* program name (from argv[0]) */
72 static const char *ProgramName;
73
74 /* verbose output what the program is doing */
75 static Bool verbose = False;
76
77 /* time in microseconds to run for; -1 means forever. */
78 static int runTime = -1;
79
80 /* Time at which start_time(void) was called. */
81 static struct timeval clockStart;
82
83 /* XXX this probably isn't very portable */
84
85 /* return current time (in seconds) */
86 static void
start_time(void)87 start_time(void)
88 {
89 (void) gettimeofday(&clockStart, 0);
90 }
91
92 /*
93 * return time (in microseconds) since start_time(void) was called.
94 *
95 * The older version of this function randomly returned negative results.
96 * This version won't, up to 2000 seconds and some.
97 */
98 static long
current_time(void)99 current_time(void)
100 {
101 struct timeval tv;
102 long secs, micros;
103
104 (void) gettimeofday(&tv, 0);
105
106 secs = tv.tv_sec - clockStart.tv_sec;
107 micros = tv.tv_usec - clockStart.tv_usec;
108 if (micros < 0) {
109 --secs;
110 micros += 1000000;
111 }
112 return secs * 1000000 + micros;
113 }
114
115 static
usage(void)116 void usage(void)
117 {
118 fprintf (stderr, "usage: %s [options]\n", ProgramName);
119 fprintf (stderr, "-display\tSet X11 display for output.\n");
120 fprintf (stderr, "-info\t\tPrint additional GLX information.\n");
121 fprintf (stderr, "-time t\t\tRun for t seconds and report performance.\n");
122 fprintf (stderr, "-h\t\tPrint this help page.\n");
123 fprintf (stderr, "-v\t\tVerbose output.\n");
124 fprintf (stderr, "\n");
125 exit(EXIT_FAILURE);
126 }
127
128
129 static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
130 static GLint gear1, gear2, gear3;
131 static GLfloat angle = 0.0;
132 static GLint speed = 60;
133 static GLboolean printInfo = GL_FALSE;
134
135 /*
136 *
137 * Draw a gear wheel. You'll probably want to call this function when
138 * building a display list since we do a lot of trig here.
139 *
140 * Input: inner_radius - radius of hole at center
141 * outer_radius - radius at center of teeth
142 * width - width of gear
143 * teeth - number of teeth
144 * tooth_depth - depth of tooth
145 */
146 static void
gear(GLfloat inner_radius,GLfloat outer_radius,GLfloat width,GLint teeth,GLfloat tooth_depth)147 gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
148 GLint teeth, GLfloat tooth_depth)
149 {
150 GLint i;
151 GLfloat r0, r1, r2, maxr2, minr2;
152 GLfloat angle, da;
153 GLfloat u, v, len;
154
155 r0 = inner_radius;
156 r1 = outer_radius - tooth_depth / 2.0;
157 maxr2 = r2 = outer_radius + tooth_depth / 2.0;
158 minr2 = r2;
159
160 da = 2.0 * M_PI / teeth / 4.0;
161
162 glShadeModel(GL_FLAT);
163
164 glNormal3f(0.0, 0.0, 1.0);
165
166 /* draw front face */
167 glBegin(GL_QUAD_STRIP);
168 for (i = 0; i <= teeth; i++) {
169 angle = i * 2.0 * M_PI / teeth;
170 glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
171 glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
172 if (i < teeth) {
173 glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
174 glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
175 width * 0.5);
176 }
177 }
178 glEnd();
179
180 /* draw front sides of teeth */
181 glBegin(GL_QUADS);
182 for (i = 0; i < teeth; i++) {
183 angle = i * 2.0 * M_PI / teeth;
184
185 glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
186 glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
187 glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
188 width * 0.5);
189 glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
190 width * 0.5);
191 r2 = minr2;
192 }
193 r2 = maxr2;
194 glEnd();
195
196 glNormal3f(0.0, 0.0, -1.0);
197
198 /* draw back face */
199 glBegin(GL_QUAD_STRIP);
200 for (i = 0; i <= teeth; i++) {
201 angle = i * 2.0 * M_PI / teeth;
202 glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
203 glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
204 if (i < teeth) {
205 glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
206 -width * 0.5);
207 glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
208 }
209 }
210 glEnd();
211
212 /* draw back sides of teeth */
213 glBegin(GL_QUADS);
214 da = 2.0 * M_PI / teeth / 4.0;
215 for (i = 0; i < teeth; i++) {
216 angle = i * 2.0 * M_PI / teeth;
217
218 glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
219 -width * 0.5);
220 glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
221 -width * 0.5);
222 glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
223 glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
224 r2 = minr2;
225 }
226 r2 = maxr2;
227 glEnd();
228
229 /* draw outward faces of teeth */
230 glBegin(GL_QUAD_STRIP);
231 for (i = 0; i < teeth; i++) {
232 angle = i * 2.0 * M_PI / teeth;
233
234 glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
235 glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
236 u = r2 * cos(angle + da) - r1 * cos(angle);
237 v = r2 * sin(angle + da) - r1 * sin(angle);
238 len = sqrt(u * u + v * v);
239 u /= len;
240 v /= len;
241 glNormal3f(v, -u, 0.0);
242 glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
243 glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
244 glNormal3f(cos(angle + 1.5 * da), sin(angle + 1.5 * da), 0.0);
245 glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
246 width * 0.5);
247 glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
248 -width * 0.5);
249 u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da);
250 v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da);
251 glNormal3f(v, -u, 0.0);
252 glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
253 width * 0.5);
254 glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
255 -width * 0.5);
256 glNormal3f(cos(angle + 3.5 * da), sin(angle + 3.5 * da), 0.0);
257 r2 = minr2;
258 }
259 r2 = maxr2;
260
261 glVertex3f(r1 * cos(0), r1 * sin(0), width * 0.5);
262 glVertex3f(r1 * cos(0), r1 * sin(0), -width * 0.5);
263
264 glEnd();
265
266 glShadeModel(GL_SMOOTH);
267
268 /* draw inside radius cylinder */
269 glBegin(GL_QUAD_STRIP);
270 for (i = 0; i <= teeth; i++) {
271 angle = i * 2.0 * M_PI / teeth;
272 glNormal3f(-cos(angle), -sin(angle), 0.0);
273 glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
274 glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
275 }
276 glEnd();
277 }
278
279
280 static void
draw(void)281 draw(void)
282 {
283 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
284
285 glPushMatrix();
286 glRotatef(view_rotx, 1.0, 0.0, 0.0);
287 glRotatef(view_roty, 0.0, 1.0, 0.0);
288 glRotatef(view_rotz, 0.0, 0.0, 1.0);
289
290 glPushMatrix();
291 glTranslatef(-3.0, -2.0, 0.0);
292 glRotatef(angle, 0.0, 0.0, 1.0);
293 glCallList(gear1);
294 glPopMatrix();
295
296 glPushMatrix();
297 glTranslatef(3.1, -2.0, 0.0);
298 glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
299 glCallList(gear2);
300 glPopMatrix();
301
302 glPushMatrix();
303 glTranslatef(-3.1, 4.2, 0.0);
304 glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
305 glCallList(gear3);
306 glPopMatrix();
307
308 glPopMatrix();
309 }
310
311
312 /* new window size or exposure */
313 static void
reshape(int width,int height)314 reshape(int width, int height)
315 {
316 GLfloat h = (GLfloat) height / (GLfloat) width;
317
318 glViewport(0, 0, (GLint) width, (GLint) height);
319 glMatrixMode(GL_PROJECTION);
320 glLoadIdentity();
321 /* fit width and height */
322 if (h >= 1.0)
323 glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0);
324 else
325 glFrustum(-1.0/h, 1.0/h, -1.0, 1.0, 5.0, 60.0);
326 glMatrixMode(GL_MODELVIEW);
327 glLoadIdentity();
328 glTranslatef(0.0, 0.0, -40.0);
329 }
330
331
332 static void
init(void)333 init(void)
334 {
335 static GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 };
336 static GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 };
337 static GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
338 static GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 };
339
340 glLightfv(GL_LIGHT0, GL_POSITION, pos);
341 glEnable(GL_CULL_FACE);
342 glEnable(GL_LIGHTING);
343 glEnable(GL_LIGHT0);
344 glEnable(GL_DEPTH_TEST);
345
346 /* make the gears */
347 gear1 = glGenLists(1);
348 glNewList(gear1, GL_COMPILE);
349 glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
350 gear(1.0, 4.0, 1.0, 20, 0.7);
351 glEndList();
352
353 gear2 = glGenLists(1);
354 glNewList(gear2, GL_COMPILE);
355 glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
356 gear(0.5, 2.0, 2.0, 10, 0.7);
357 glEndList();
358
359 gear3 = glGenLists(1);
360 glNewList(gear3, GL_COMPILE);
361 glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
362 gear(1.3, 2.0, 0.5, 10, 0.7);
363 glEndList();
364
365 glEnable(GL_NORMALIZE);
366 }
367
368
369 /*
370 * Create an RGB, double-buffered window.
371 * Return the window and context handles.
372 */
373 static void
make_window(Display * dpy,Screen * scr,const char * name,int x,int y,int width,int height,Window * winRet,GLXContext * ctxRet)374 make_window( Display *dpy, Screen *scr,
375 const char *name,
376 int x, int y, int width, int height,
377 Window *winRet, GLXContext *ctxRet)
378 {
379 int attrib[] = { GLX_RGBA,
380 GLX_RED_SIZE, 1,
381 GLX_GREEN_SIZE, 1,
382 GLX_BLUE_SIZE, 1,
383 GLX_DOUBLEBUFFER,
384 GLX_DEPTH_SIZE, 1,
385 None };
386 int scrnum;
387 XSetWindowAttributes attr;
388 unsigned long mask;
389 Window root;
390 Window win;
391 GLXContext ctx;
392 XVisualInfo *visinfo;
393 GLint max[2] = { 0, 0 };
394
395 scrnum = XScreenNumberOfScreen(scr);
396 root = XRootWindow(dpy, scrnum);
397
398 visinfo = glXChooseVisual( dpy, scrnum, attrib );
399 if (!visinfo) {
400 fprintf(stderr, "%s: Error: couldn't get an RGB, Double-buffered visual.\n", ProgramName);
401 exit(EXIT_FAILURE);
402 }
403
404 /* window attributes */
405 attr.background_pixel = 0;
406 attr.border_pixel = 0;
407 attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
408 attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
409 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
410
411 win = XCreateWindow( dpy, root, x, y, width, height,
412 0, visinfo->depth, InputOutput,
413 visinfo->visual, mask, &attr );
414
415 /* set hints and properties */
416 {
417 XSizeHints sizehints;
418 sizehints.x = x;
419 sizehints.y = y;
420 sizehints.width = width;
421 sizehints.height = height;
422 sizehints.flags = USSize | USPosition;
423 XSetNormalHints(dpy, win, &sizehints);
424 XSetStandardProperties(dpy, win, name, name,
425 None, (char **)NULL, 0, &sizehints);
426 }
427
428 ctx = glXCreateContext( dpy, visinfo, NULL, True );
429 if (!ctx) {
430 fprintf(stderr, "%s: Error: glXCreateContext failed.\n", ProgramName);
431 exit(EXIT_FAILURE);
432 }
433
434 XFree(visinfo);
435
436 XMapWindow(dpy, win);
437 glXMakeCurrent(dpy, win, ctx);
438
439 /* Check for maximum size supported by the GL rasterizer */
440 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, max);
441 if (printInfo)
442 printf("GL_MAX_VIEWPORT_DIMS=%d/%d\n", (int)max[0], (int)max[1]);
443 if (width > max[0] || height > max[1]) {
444 fprintf(stderr, "%s: Error: Requested window size (%d/%d) larger than "
445 "maximum supported by GL engine (%d/%d).\n",
446 ProgramName, width, height, (int)max[0], (int)max[1]);
447 exit(EXIT_FAILURE);
448 }
449
450 *winRet = win;
451 *ctxRet = ctx;
452 }
453
454 static void
event_loop(Display * dpy,Window win)455 event_loop(Display *dpy, Window win)
456 {
457 while (1) {
458 /* Process interactive events */
459 while (XPending(dpy) > 0) {
460 XEvent event;
461 XNextEvent(dpy, &event);
462 switch (event.type) {
463 case Expose:
464 Log(("Event: Expose\n"));
465 /* we'll redraw below */
466 break;
467 case ConfigureNotify:
468 Log(("Event: ConfigureNotify\n"));
469 reshape(event.xconfigure.width, event.xconfigure.height);
470 break;
471 }
472 }
473
474 {
475 /* Time at which we started measuring. */
476 static long startTime = 0;
477
478 /* Time of the previous frame. */
479 static long lastFrame = 0;
480
481 /* Time of the previous FPS report. */
482 static long lastFps = 0;
483
484 /* Number of frames we've done. */
485 static int frames = 0;
486
487 /* Number of frames we've done in the measured run. */
488 static long runFrames = 0;
489
490 long t = current_time();
491 long useconds;
492
493 if (!lastFrame)
494 lastFrame = t;
495 if (!lastFps)
496 lastFps = t;
497
498 /* How many microseconds since the previous frame? */
499 useconds = t - lastFrame;
500 if (!useconds) /* assume 100FPS if we don't have timer */
501 useconds = 10000;
502
503 /* Calculate how far the gears need to move and redraw. */
504 angle = angle + ((double)speed * useconds) / 1000000.0;
505 if (angle > 360.0)
506 angle = angle - 360.0; /* don't lose precision! */
507 draw();
508 glXSwapBuffers(dpy, win);
509
510 /* Done this frame. */
511 lastFrame = t;
512 frames++;
513
514 /* Every 5 seconds, print the FPS. */
515 if (t - lastFps >= 5000000L) {
516 GLfloat seconds = (t - lastFps) / 1000000.0;
517 GLfloat fps = frames / seconds;
518
519 printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds,
520 fps);
521 lastFps = t;
522 frames = 0;
523
524 /*
525 * Set the start time now -- ie. after one report. This
526 * gives us pump-priming time before we start for real.
527 */
528 if (runTime > 0 && startTime == 0) {
529 printf("Start timing!\n");
530 startTime = t;
531 }
532 }
533
534 if (startTime > 0)
535 ++runFrames;
536
537 /* If our run time is done, finish. */
538 if (runTime > 0 && startTime > 0 && t - startTime > runTime) {
539 double time = (double) (t - startTime) / 1000000.0;
540 fprintf(stderr, "COUNT|%ld|1|fps\n", runFrames);
541 fprintf(stderr, "TIME|%.1f\n", time);
542 exit(0);
543 }
544
545 /* Need to give cpu away in order to get precise timing next cycle,
546 * otherwise, gettimeofday would return almost the same value. */
547 sched_yield();
548 }
549 }
550 }
551
552
553 int
main(int argc,char * argv[])554 main(int argc, char *argv[])
555 {
556 Bool use_threadsafe_api = False;
557 Display *dpy;
558 Window win;
559 Screen *screen;
560 GLXContext ctx;
561 char *dpyName = NULL;
562 int i;
563 XRectangle winrect;
564
565 ProgramName = argv[0];
566
567 for (i = 1; i < argc; i++) {
568 const char *arg = argv[i];
569 int len = strlen(arg);
570
571 if (strcmp(argv[i], "-display") == 0) {
572 if (++i >= argc)
573 usage();
574 dpyName = argv[i];
575 }
576 else if (strcmp(argv[i], "-info") == 0) {
577 printInfo = GL_TRUE;
578 }
579 else if (strcmp(argv[i], "-time") == 0) {
580 if (++i >= argc)
581 usage();
582 runTime = atoi(argv[i]) * 1000000;
583 }
584 else if (!strncmp("-v", arg, len)) {
585 verbose = True;
586 printInfo = GL_TRUE;
587 }
588 else if( !strncmp("-debug_use_threadsafe_api", arg, len) )
589 {
590 use_threadsafe_api = True;
591 }
592 else if (!strcmp(argv[i], "-h")) {
593 usage();
594 }
595 else
596 {
597 fprintf(stderr, "%s: Unsupported option '%s'.\n", ProgramName, argv[i]);
598 usage();
599 }
600 }
601
602 /* Init X threading API on demand (for debugging) */
603 if( use_threadsafe_api )
604 {
605 if( !XInitThreads() )
606 {
607 fprintf(stderr, "%s: XInitThreads() failure.\n", ProgramName);
608 exit(EXIT_FAILURE);
609 }
610 }
611
612 dpy = XOpenDisplay(dpyName);
613 if (!dpy) {
614 fprintf(stderr, "%s: Error: couldn't open display '%s'\n", ProgramName, dpyName);
615 return EXIT_FAILURE;
616 }
617
618 screen = XDefaultScreenOfDisplay(dpy);
619
620 winrect.x = 0;
621 winrect.y = 0;
622 winrect.width = 300;
623 winrect.height = 300;
624
625 Log(("Window x=%d, y=%d, width=%d, height=%d\n",
626 (int)winrect.x, (int)winrect.y, (int)winrect.width, (int)winrect.height));
627
628 make_window(dpy, screen, "ubgears", winrect.x, winrect.y, winrect.width, winrect.height, &win, &ctx);
629 reshape(winrect.width, winrect.height);
630
631 if (printInfo) {
632 printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
633 printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
634 printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
635 printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
636 }
637
638 init();
639
640 start_time();
641 event_loop(dpy, win);
642
643 glXDestroyContext(dpy, ctx);
644
645 XDestroyWindow(dpy, win);
646 XCloseDisplay(dpy);
647
648 return EXIT_SUCCESS;
649 }
650
651