650 lines
19 KiB
C
650 lines
19 KiB
C
/*
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* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* $XFree86: xc/programs/glxgears/glxgears.c,v 1.3tsi Exp $ */
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/*
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* This is a port of the infamous "gears" demo to straight GLX (i.e. no GLUT)
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* Port by Brian Paul 23 March 2001
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*
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* Exact timing added by Behdad Esfahbod to achieve a fixed speed regardless
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* of frame rate. November 2003
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*
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* Printer support added by Roland Mainz <roland.mainz@nrubsig.org>. April 2004
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*
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* This version modified by Ian Smith, 30 Sept 2007, to make ubgears.
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* ubgears is cusoimised for use in the UnixBench benchmarking suite.
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* Some redundant stuff is gone, and the -time option is added.
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* Mainly it's forked so we don't use the host's version, which could change
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* from platform to platform.
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*
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* Command line options:
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* -display Set X11 display for output.
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* -info Print additional GLX information.
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* -time <t> Run for <t> seconds and produce a performance report.
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* -h Print this help page.
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* -v Verbose output.
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*
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*/
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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#include <GL/gl.h>
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#include <GL/glx.h>
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#include <sys/time.h>
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#include <sched.h>
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#include <math.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#ifndef M_PI
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#define M_PI 3.14159265
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#endif /* !M_PI */
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/* Turn a NULL pointer string into an empty string */
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#define NULLSTR(x) (((x)!=NULL)?(x):(""))
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#define Log(x) { if(verbose) printf x; }
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#define Msg(x) { printf x; }
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/* Globla vars */
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/* program name (from argv[0]) */
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static const char *ProgramName;
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/* verbose output what the program is doing */
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static Bool verbose = False;
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/* time in microseconds to run for; -1 means forever. */
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static int runTime = -1;
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/* Time at which start_time(void) was called. */
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static struct timeval clockStart;
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/* XXX this probably isn't very portable */
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/* return current time (in seconds) */
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static void
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start_time(void)
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{
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(void) gettimeofday(&clockStart, 0);
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}
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/*
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* return time (in microseconds) since start_time(void) was called.
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*
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* The older version of this function randomly returned negative results.
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* This version won't, up to 2000 seconds and some.
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*/
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static long
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current_time(void)
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{
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struct timeval tv;
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long secs, micros;
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(void) gettimeofday(&tv, 0);
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secs = tv.tv_sec - clockStart.tv_sec;
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micros = tv.tv_usec - clockStart.tv_usec;
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if (micros < 0) {
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--secs;
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micros += 1000000;
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}
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return secs * 1000000 + micros;
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}
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static
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void usage(void)
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{
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fprintf (stderr, "usage: %s [options]\n", ProgramName);
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fprintf (stderr, "-display\tSet X11 display for output.\n");
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fprintf (stderr, "-info\t\tPrint additional GLX information.\n");
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fprintf (stderr, "-time t\t\tRun for t seconds and report performance.\n");
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fprintf (stderr, "-h\t\tPrint this help page.\n");
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fprintf (stderr, "-v\t\tVerbose output.\n");
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fprintf (stderr, "\n");
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exit(EXIT_FAILURE);
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}
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static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
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static GLint gear1, gear2, gear3;
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static GLfloat angle = 0.0;
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static GLint speed = 60;
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static GLboolean printInfo = GL_FALSE;
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/*
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*
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* Draw a gear wheel. You'll probably want to call this function when
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* building a display list since we do a lot of trig here.
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*
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* Input: inner_radius - radius of hole at center
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* outer_radius - radius at center of teeth
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* width - width of gear
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* teeth - number of teeth
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* tooth_depth - depth of tooth
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*/
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static void
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gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
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GLint teeth, GLfloat tooth_depth)
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{
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GLint i;
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GLfloat r0, r1, r2, maxr2, minr2;
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GLfloat angle, da;
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GLfloat u, v, len;
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r0 = inner_radius;
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r1 = outer_radius - tooth_depth / 2.0;
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maxr2 = r2 = outer_radius + tooth_depth / 2.0;
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minr2 = r2;
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da = 2.0 * M_PI / teeth / 4.0;
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glShadeModel(GL_FLAT);
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glNormal3f(0.0, 0.0, 1.0);
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/* draw front face */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
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glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
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if (i < teeth) {
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glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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width * 0.5);
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}
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}
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glEnd();
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/* draw front sides of teeth */
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glBegin(GL_QUADS);
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for (i = 0; i < teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
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glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
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glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
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width * 0.5);
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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width * 0.5);
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r2 = minr2;
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}
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r2 = maxr2;
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glEnd();
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glNormal3f(0.0, 0.0, -1.0);
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/* draw back face */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
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glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
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if (i < teeth) {
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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-width * 0.5);
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glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
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}
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}
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glEnd();
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/* draw back sides of teeth */
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glBegin(GL_QUADS);
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da = 2.0 * M_PI / teeth / 4.0;
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for (i = 0; i < teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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-width * 0.5);
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glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
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-width * 0.5);
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glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
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glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
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r2 = minr2;
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}
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r2 = maxr2;
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glEnd();
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/* draw outward faces of teeth */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i < teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
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glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
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u = r2 * cos(angle + da) - r1 * cos(angle);
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v = r2 * sin(angle + da) - r1 * sin(angle);
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len = sqrt(u * u + v * v);
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u /= len;
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v /= len;
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glNormal3f(v, -u, 0.0);
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glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
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glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
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glNormal3f(cos(angle + 1.5 * da), sin(angle + 1.5 * da), 0.0);
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glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
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width * 0.5);
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glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
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-width * 0.5);
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u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da);
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v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da);
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glNormal3f(v, -u, 0.0);
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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width * 0.5);
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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-width * 0.5);
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glNormal3f(cos(angle + 3.5 * da), sin(angle + 3.5 * da), 0.0);
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r2 = minr2;
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}
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r2 = maxr2;
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glVertex3f(r1 * cos(0), r1 * sin(0), width * 0.5);
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glVertex3f(r1 * cos(0), r1 * sin(0), -width * 0.5);
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glEnd();
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glShadeModel(GL_SMOOTH);
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/* draw inside radius cylinder */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glNormal3f(-cos(angle), -sin(angle), 0.0);
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glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
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glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
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}
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glEnd();
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}
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static void
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draw(void)
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glPushMatrix();
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glRotatef(view_rotx, 1.0, 0.0, 0.0);
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glRotatef(view_roty, 0.0, 1.0, 0.0);
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glRotatef(view_rotz, 0.0, 0.0, 1.0);
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glPushMatrix();
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glTranslatef(-3.0, -2.0, 0.0);
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glRotatef(angle, 0.0, 0.0, 1.0);
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glCallList(gear1);
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glPopMatrix();
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glPushMatrix();
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glTranslatef(3.1, -2.0, 0.0);
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glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
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glCallList(gear2);
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glPopMatrix();
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glPushMatrix();
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glTranslatef(-3.1, 4.2, 0.0);
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glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
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glCallList(gear3);
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glPopMatrix();
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glPopMatrix();
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}
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/* new window size or exposure */
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static void
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reshape(int width, int height)
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{
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GLfloat h = (GLfloat) height / (GLfloat) width;
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glViewport(0, 0, (GLint) width, (GLint) height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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/* fit width and height */
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if (h >= 1.0)
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glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0);
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else
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glFrustum(-1.0/h, 1.0/h, -1.0, 1.0, 5.0, 60.0);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslatef(0.0, 0.0, -40.0);
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}
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static void
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init(void)
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{
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static GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 };
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static GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 };
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static GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
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static GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 };
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glLightfv(GL_LIGHT0, GL_POSITION, pos);
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glEnable(GL_CULL_FACE);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glEnable(GL_DEPTH_TEST);
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/* make the gears */
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gear1 = glGenLists(1);
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glNewList(gear1, GL_COMPILE);
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
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gear(1.0, 4.0, 1.0, 20, 0.7);
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glEndList();
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gear2 = glGenLists(1);
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glNewList(gear2, GL_COMPILE);
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
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gear(0.5, 2.0, 2.0, 10, 0.7);
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glEndList();
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gear3 = glGenLists(1);
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glNewList(gear3, GL_COMPILE);
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
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gear(1.3, 2.0, 0.5, 10, 0.7);
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glEndList();
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glEnable(GL_NORMALIZE);
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}
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/*
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* Create an RGB, double-buffered window.
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* Return the window and context handles.
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*/
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static void
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make_window( Display *dpy, Screen *scr,
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const char *name,
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int x, int y, int width, int height,
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Window *winRet, GLXContext *ctxRet)
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{
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int attrib[] = { GLX_RGBA,
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GLX_RED_SIZE, 1,
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GLX_GREEN_SIZE, 1,
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GLX_BLUE_SIZE, 1,
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GLX_DOUBLEBUFFER,
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GLX_DEPTH_SIZE, 1,
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None };
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int scrnum;
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XSetWindowAttributes attr;
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unsigned long mask;
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Window root;
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Window win;
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GLXContext ctx;
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XVisualInfo *visinfo;
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GLint max[2] = { 0, 0 };
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scrnum = XScreenNumberOfScreen(scr);
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root = XRootWindow(dpy, scrnum);
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visinfo = glXChooseVisual( dpy, scrnum, attrib );
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if (!visinfo) {
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fprintf(stderr, "%s: Error: couldn't get an RGB, Double-buffered visual.\n", ProgramName);
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exit(EXIT_FAILURE);
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}
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/* window attributes */
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attr.background_pixel = 0;
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attr.border_pixel = 0;
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attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
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attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
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mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
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win = XCreateWindow( dpy, root, x, y, width, height,
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0, visinfo->depth, InputOutput,
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visinfo->visual, mask, &attr );
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/* set hints and properties */
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{
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XSizeHints sizehints;
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sizehints.x = x;
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sizehints.y = y;
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sizehints.width = width;
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sizehints.height = height;
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sizehints.flags = USSize | USPosition;
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XSetNormalHints(dpy, win, &sizehints);
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XSetStandardProperties(dpy, win, name, name,
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None, (char **)NULL, 0, &sizehints);
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}
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ctx = glXCreateContext( dpy, visinfo, NULL, True );
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if (!ctx) {
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fprintf(stderr, "%s: Error: glXCreateContext failed.\n", ProgramName);
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exit(EXIT_FAILURE);
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}
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XFree(visinfo);
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XMapWindow(dpy, win);
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glXMakeCurrent(dpy, win, ctx);
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/* Check for maximum size supported by the GL rasterizer */
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glGetIntegerv(GL_MAX_VIEWPORT_DIMS, max);
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if (printInfo)
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printf("GL_MAX_VIEWPORT_DIMS=%d/%d\n", (int)max[0], (int)max[1]);
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if (width > max[0] || height > max[1]) {
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fprintf(stderr, "%s: Error: Requested window size (%d/%d) larger than "
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"maximum supported by GL engine (%d/%d).\n",
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ProgramName, width, height, (int)max[0], (int)max[1]);
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exit(EXIT_FAILURE);
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}
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*winRet = win;
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*ctxRet = ctx;
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}
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static void
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event_loop(Display *dpy, Window win)
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{
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while (1) {
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/* Process interactive events */
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while (XPending(dpy) > 0) {
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XEvent event;
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XNextEvent(dpy, &event);
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switch (event.type) {
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case Expose:
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Log(("Event: Expose\n"));
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/* we'll redraw below */
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break;
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case ConfigureNotify:
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Log(("Event: ConfigureNotify\n"));
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reshape(event.xconfigure.width, event.xconfigure.height);
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break;
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}
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}
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{
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/* Time at which we started measuring. */
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static long startTime = 0;
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|
|
/* Time of the previous frame. */
|
|
static long lastFrame = 0;
|
|
|
|
/* Time of the previous FPS report. */
|
|
static long lastFps = 0;
|
|
|
|
/* Number of frames we've done. */
|
|
static int frames = 0;
|
|
|
|
/* Number of frames we've done in the measured run. */
|
|
static long runFrames = 0;
|
|
|
|
long t = current_time();
|
|
long useconds;
|
|
|
|
if (!lastFrame)
|
|
lastFrame = t;
|
|
if (!lastFps)
|
|
lastFps = t;
|
|
|
|
/* How many microseconds since the previous frame? */
|
|
useconds = t - lastFrame;
|
|
if (!useconds) /* assume 100FPS if we don't have timer */
|
|
useconds = 10000;
|
|
|
|
/* Calculate how far the gears need to move and redraw. */
|
|
angle = angle + ((double)speed * useconds) / 1000000.0;
|
|
if (angle > 360.0)
|
|
angle = angle - 360.0; /* don't lose precision! */
|
|
draw();
|
|
glXSwapBuffers(dpy, win);
|
|
|
|
/* Done this frame. */
|
|
lastFrame = t;
|
|
frames++;
|
|
|
|
/* Every 5 seconds, print the FPS. */
|
|
if (t - lastFps >= 5000000L) {
|
|
GLfloat seconds = (t - lastFps) / 1000000.0;
|
|
GLfloat fps = frames / seconds;
|
|
|
|
printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds,
|
|
fps);
|
|
lastFps = t;
|
|
frames = 0;
|
|
|
|
/*
|
|
* Set the start time now -- ie. after one report. This
|
|
* gives us pump-priming time before we start for real.
|
|
*/
|
|
if (runTime > 0 && startTime == 0) {
|
|
printf("Start timing!\n");
|
|
startTime = t;
|
|
}
|
|
}
|
|
|
|
if (startTime > 0)
|
|
++runFrames;
|
|
|
|
/* If our run time is done, finish. */
|
|
if (runTime > 0 && startTime > 0 && t - startTime > runTime) {
|
|
double time = (double) (t - startTime) / 1000000.0;
|
|
fprintf(stderr, "COUNT|%ld|1|fps\n", runFrames);
|
|
fprintf(stderr, "TIME|%.1f\n", time);
|
|
exit(0);
|
|
}
|
|
|
|
/* Need to give cpu away in order to get precise timing next cycle,
|
|
* otherwise, gettimeofday would return almost the same value. */
|
|
sched_yield();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
Bool use_threadsafe_api = False;
|
|
Display *dpy;
|
|
Window win;
|
|
Screen *screen;
|
|
GLXContext ctx;
|
|
char *dpyName = NULL;
|
|
int i;
|
|
XRectangle winrect;
|
|
|
|
ProgramName = argv[0];
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
const char *arg = argv[i];
|
|
int len = strlen(arg);
|
|
|
|
if (strcmp(argv[i], "-display") == 0) {
|
|
if (++i >= argc)
|
|
usage();
|
|
dpyName = argv[i];
|
|
}
|
|
else if (strcmp(argv[i], "-info") == 0) {
|
|
printInfo = GL_TRUE;
|
|
}
|
|
else if (strcmp(argv[i], "-time") == 0) {
|
|
if (++i >= argc)
|
|
usage();
|
|
runTime = atoi(argv[i]) * 1000000;
|
|
}
|
|
else if (!strncmp("-v", arg, len)) {
|
|
verbose = True;
|
|
printInfo = GL_TRUE;
|
|
}
|
|
else if( !strncmp("-debug_use_threadsafe_api", arg, len) )
|
|
{
|
|
use_threadsafe_api = True;
|
|
}
|
|
else if (!strcmp(argv[i], "-h")) {
|
|
usage();
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "%s: Unsupported option '%s'.\n", ProgramName, argv[i]);
|
|
usage();
|
|
}
|
|
}
|
|
|
|
/* Init X threading API on demand (for debugging) */
|
|
if( use_threadsafe_api )
|
|
{
|
|
if( !XInitThreads() )
|
|
{
|
|
fprintf(stderr, "%s: XInitThreads() failure.\n", ProgramName);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
dpy = XOpenDisplay(dpyName);
|
|
if (!dpy) {
|
|
fprintf(stderr, "%s: Error: couldn't open display '%s'\n", ProgramName, dpyName);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
screen = XDefaultScreenOfDisplay(dpy);
|
|
|
|
winrect.x = 0;
|
|
winrect.y = 0;
|
|
winrect.width = 300;
|
|
winrect.height = 300;
|
|
|
|
Log(("Window x=%d, y=%d, width=%d, height=%d\n",
|
|
(int)winrect.x, (int)winrect.y, (int)winrect.width, (int)winrect.height));
|
|
|
|
make_window(dpy, screen, "ubgears", winrect.x, winrect.y, winrect.width, winrect.height, &win, &ctx);
|
|
reshape(winrect.width, winrect.height);
|
|
|
|
if (printInfo) {
|
|
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
|
|
printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
|
|
printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
|
|
printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
|
|
}
|
|
|
|
init();
|
|
|
|
start_time();
|
|
event_loop(dpy, win);
|
|
|
|
glXDestroyContext(dpy, ctx);
|
|
|
|
XDestroyWindow(dpy, win);
|
|
XCloseDisplay(dpy);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|