788 lines
20 KiB
C
788 lines
20 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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/*
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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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* See usage() below for command line options.
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*/
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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 <string.h>
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#include <X11/Xlib.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 <GL/glxext.h>
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#ifndef GLX_MESA_swap_control
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#define GLX_MESA_swap_control 1
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typedef int (*PFNGLXGETSWAPINTERVALMESAPROC)(void);
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#endif
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#define BENCHMARK
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#ifdef BENCHMARK
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/* XXX this probably isn't very portable */
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#include <sys/time.h>
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#include <unistd.h>
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/* return current time (in seconds) */
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static double
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current_time(void)
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{
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struct timeval tv;
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#ifdef __VMS
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(void) gettimeofday(&tv, NULL );
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#else
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struct timezone tz;
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(void) gettimeofday(&tv, &tz);
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#endif
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return (double) tv.tv_sec + tv.tv_usec / 1000000.0;
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}
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#else /*BENCHMARK*/
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/* dummy */
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static double
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current_time(void)
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{
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/* update this function for other platforms! */
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static double t = 0.0;
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static int warn = 1;
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if (warn) {
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fprintf(stderr, "Warning: current_time() not implemented!!\n");
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warn = 0;
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}
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return t += 1.0;
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}
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#endif /*BENCHMARK*/
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#ifndef M_PI
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#define M_PI 3.14159265
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#endif
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/** Event handler results: */
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#define NOP 0
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#define EXIT 1
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#define DRAW 2
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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 GLboolean fullscreen = GL_FALSE; /* Create a single fullscreen window */
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static GLboolean stereo = GL_FALSE; /* Enable stereo. */
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static GLboolean animate = GL_TRUE; /* Animation */
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static GLfloat eyesep = 5.0; /* Eye separation. */
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static GLfloat fix_point = 40.0; /* Fixation point distance. */
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static GLfloat left, right, asp; /* Stereo frustum params. */
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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;
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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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r2 = outer_radius + tooth_depth / 2.0;
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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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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), 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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}
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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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}
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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), sin(angle), 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), sin(angle), 0.0);
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}
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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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static void
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draw_gears(void)
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{
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if (stereo) {
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/* First left eye. */
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glDrawBuffer(GL_BACK_LEFT);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glFrustum(left, right, -asp, asp, 5.0, 60.0);
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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glTranslated(+0.5 * eyesep, 0.0, 0.0);
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draw();
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glPopMatrix();
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/* Then right eye. */
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glDrawBuffer(GL_BACK_RIGHT);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glFrustum(-right, -left, -asp, asp, 5.0, 60.0);
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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glTranslated(-0.5 * eyesep, 0.0, 0.0);
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draw();
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glPopMatrix();
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}
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else {
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draw();
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}
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}
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/** Draw single frame, do SwapBuffers, compute FPS */
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static void
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draw_frame(Display *dpy, Window win)
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{
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static int frames = 0;
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static double tRot0 = -1.0, tRate0 = -1.0;
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double dt, t = current_time();
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if (tRot0 < 0.0)
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tRot0 = t;
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dt = t - tRot0;
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tRot0 = t;
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if (animate) {
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/* advance rotation for next frame */
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angle += 70.0 * dt; /* 70 degrees per second */
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if (angle > 3600.0)
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angle -= 3600.0;
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}
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draw_gears();
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glXSwapBuffers(dpy, win);
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frames++;
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if (tRate0 < 0.0)
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tRate0 = t;
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if (t - tRate0 >= 5.0) {
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GLfloat seconds = t - tRate0;
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GLfloat fps = frames / seconds;
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printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds,
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fps);
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tRate0 = t;
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frames = 0;
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}
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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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glViewport(0, 0, (GLint) width, (GLint) height);
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if (stereo) {
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GLfloat w;
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asp = (GLfloat) height / (GLfloat) width;
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w = fix_point * (1.0 / 5.0);
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left = -5.0 * ((w - 0.5 * eyesep) / fix_point);
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right = 5.0 * ((w + 0.5 * eyesep) / fix_point);
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}
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else {
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GLfloat h = (GLfloat) height / (GLfloat) width;
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0);
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}
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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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* Remove window border/decorations.
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*/
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static void
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no_border( Display *dpy, Window w)
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{
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static const unsigned MWM_HINTS_DECORATIONS = (1 << 1);
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static const int PROP_MOTIF_WM_HINTS_ELEMENTS = 5;
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typedef struct
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{
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unsigned long flags;
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unsigned long functions;
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unsigned long decorations;
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long inputMode;
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unsigned long status;
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} PropMotifWmHints;
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PropMotifWmHints motif_hints;
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Atom prop, proptype;
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unsigned long flags = 0;
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/* setup the property */
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motif_hints.flags = MWM_HINTS_DECORATIONS;
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motif_hints.decorations = flags;
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/* get the atom for the property */
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prop = XInternAtom( dpy, "_MOTIF_WM_HINTS", True );
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if (!prop) {
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/* something went wrong! */
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return;
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}
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/* not sure this is correct, seems to work, XA_WM_HINTS didn't work */
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proptype = prop;
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XChangeProperty( dpy, w, /* display, window */
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prop, proptype, /* property, type */
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32, /* format: 32-bit datums */
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PropModeReplace, /* mode */
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(unsigned char *) &motif_hints, /* data */
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PROP_MOTIF_WM_HINTS_ELEMENTS /* nelements */
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);
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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, 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 attribs[] = { 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 stereoAttribs[] = { 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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GLX_STEREO,
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None };
|
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int scrnum;
|
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XSetWindowAttributes attr;
|
|
unsigned long mask;
|
|
Window root;
|
|
Window win;
|
|
GLXContext ctx;
|
|
XVisualInfo *visinfo;
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|
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scrnum = DefaultScreen( dpy );
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root = RootWindow( dpy, scrnum );
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|
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if (fullscreen) {
|
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x = 0; y = 0;
|
|
width = DisplayWidth( dpy, scrnum );
|
|
height = DisplayHeight( dpy, scrnum );
|
|
}
|
|
|
|
if (stereo)
|
|
visinfo = glXChooseVisual( dpy, scrnum, stereoAttribs );
|
|
else
|
|
visinfo = glXChooseVisual( dpy, scrnum, attribs );
|
|
if (!visinfo) {
|
|
if (stereo) {
|
|
printf("Error: couldn't get an RGB, "
|
|
"Double-buffered, Stereo visual\n");
|
|
} else
|
|
printf("Error: couldn't get an RGB, Double-buffered visual\n");
|
|
exit(1);
|
|
}
|
|
|
|
/* window attributes */
|
|
attr.background_pixel = 0;
|
|
attr.border_pixel = 0;
|
|
attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
|
|
attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
|
|
/* XXX this is a bad way to get a borderless window! */
|
|
mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
|
|
|
|
win = XCreateWindow( dpy, root, x, y, width, height,
|
|
0, visinfo->depth, InputOutput,
|
|
visinfo->visual, mask, &attr );
|
|
|
|
if (fullscreen)
|
|
no_border(dpy, win);
|
|
|
|
/* set hints and properties */
|
|
{
|
|
XSizeHints sizehints;
|
|
sizehints.x = x;
|
|
sizehints.y = y;
|
|
sizehints.width = width;
|
|
sizehints.height = height;
|
|
sizehints.flags = USSize | USPosition;
|
|
XSetNormalHints(dpy, win, &sizehints);
|
|
XSetStandardProperties(dpy, win, name, name,
|
|
None, (char **)NULL, 0, &sizehints);
|
|
}
|
|
|
|
ctx = glXCreateContext( dpy, visinfo, NULL, True );
|
|
if (!ctx) {
|
|
printf("Error: glXCreateContext failed\n");
|
|
exit(1);
|
|
}
|
|
|
|
XFree(visinfo);
|
|
|
|
*winRet = win;
|
|
*ctxRet = ctx;
|
|
}
|
|
|
|
|
|
/**
|
|
* Determine whether or not a GLX extension is supported.
|
|
*/
|
|
static int
|
|
is_glx_extension_supported(Display *dpy, const char *query)
|
|
{
|
|
const int scrnum = DefaultScreen(dpy);
|
|
const char *glx_extensions = NULL;
|
|
const size_t len = strlen(query);
|
|
const char *ptr;
|
|
|
|
if (glx_extensions == NULL) {
|
|
glx_extensions = glXQueryExtensionsString(dpy, scrnum);
|
|
}
|
|
|
|
ptr = strstr(glx_extensions, query);
|
|
return ((ptr != NULL) && ((ptr[len] == ' ') || (ptr[len] == '\0')));
|
|
}
|
|
|
|
|
|
/**
|
|
* Attempt to determine whether or not the display is synched to vblank.
|
|
*/
|
|
static void
|
|
query_vsync(Display *dpy, GLXDrawable drawable)
|
|
{
|
|
int interval = 0;
|
|
|
|
#if defined(GLX_EXT_swap_control)
|
|
if (is_glx_extension_supported(dpy, "GLX_EXT_swap_control")) {
|
|
unsigned int tmp = -1;
|
|
glXQueryDrawable(dpy, drawable, GLX_SWAP_INTERVAL_EXT, &tmp);
|
|
interval = tmp;
|
|
} else
|
|
#endif
|
|
if (is_glx_extension_supported(dpy, "GLX_MESA_swap_control")) {
|
|
PFNGLXGETSWAPINTERVALMESAPROC pglXGetSwapIntervalMESA =
|
|
(PFNGLXGETSWAPINTERVALMESAPROC)
|
|
glXGetProcAddressARB((const GLubyte *) "glXGetSwapIntervalMESA");
|
|
|
|
interval = (*pglXGetSwapIntervalMESA)();
|
|
} else if (is_glx_extension_supported(dpy, "GLX_SGI_swap_control")) {
|
|
/* The default swap interval with this extension is 1. Assume that it
|
|
* is set to the default.
|
|
*
|
|
* Many Mesa-based drivers default to 0, but all of these drivers also
|
|
* export GLX_MESA_swap_control. In that case, this branch will never
|
|
* be taken, and the correct result should be reported.
|
|
*/
|
|
interval = 1;
|
|
}
|
|
|
|
|
|
if (interval > 0) {
|
|
printf("Running synchronized to the vertical refresh. The framerate should be\n");
|
|
if (interval == 1) {
|
|
printf("approximately the same as the monitor refresh rate.\n");
|
|
} else if (interval > 1) {
|
|
printf("approximately 1/%d the monitor refresh rate.\n",
|
|
interval);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handle one X event.
|
|
* \return NOP, EXIT or DRAW
|
|
*/
|
|
static int
|
|
handle_event(Display *dpy, Window win, XEvent *event)
|
|
{
|
|
(void) dpy;
|
|
(void) win;
|
|
|
|
switch (event->type) {
|
|
case Expose:
|
|
return DRAW;
|
|
case ConfigureNotify:
|
|
reshape(event->xconfigure.width, event->xconfigure.height);
|
|
break;
|
|
case KeyPress:
|
|
{
|
|
char buffer[10];
|
|
int r, code;
|
|
code = XLookupKeysym(&event->xkey, 0);
|
|
if (code == XK_Left) {
|
|
view_roty += 5.0;
|
|
}
|
|
else if (code == XK_Right) {
|
|
view_roty -= 5.0;
|
|
}
|
|
else if (code == XK_Up) {
|
|
view_rotx += 5.0;
|
|
}
|
|
else if (code == XK_Down) {
|
|
view_rotx -= 5.0;
|
|
}
|
|
else {
|
|
r = XLookupString(&event->xkey, buffer, sizeof(buffer),
|
|
NULL, NULL);
|
|
if (buffer[0] == 27) {
|
|
/* escape */
|
|
return EXIT;
|
|
}
|
|
else if (buffer[0] == 'a' || buffer[0] == 'A') {
|
|
animate = !animate;
|
|
}
|
|
}
|
|
return DRAW;
|
|
}
|
|
}
|
|
return NOP;
|
|
}
|
|
|
|
|
|
static void
|
|
event_loop(Display *dpy, Window win)
|
|
{
|
|
while (1) {
|
|
int op;
|
|
while (!animate || XPending(dpy) > 0) {
|
|
XEvent event;
|
|
XNextEvent(dpy, &event);
|
|
op = handle_event(dpy, win, &event);
|
|
if (op == EXIT)
|
|
return;
|
|
else if (op == DRAW)
|
|
break;
|
|
}
|
|
|
|
draw_frame(dpy, win);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
printf("Usage:\n");
|
|
printf(" -display <displayname> set the display to run on\n");
|
|
printf(" -stereo run in stereo mode\n");
|
|
printf(" -fullscreen run in fullscreen mode\n");
|
|
printf(" -info display OpenGL renderer info\n");
|
|
printf(" -geometry WxH+X+Y window geometry\n");
|
|
}
|
|
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
unsigned int winWidth = 300, winHeight = 300;
|
|
int x = 0, y = 0;
|
|
Display *dpy;
|
|
Window win;
|
|
GLXContext ctx;
|
|
char *dpyName = NULL;
|
|
GLboolean printInfo = GL_FALSE;
|
|
int i;
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
if (strcmp(argv[i], "-display") == 0) {
|
|
dpyName = argv[i+1];
|
|
i++;
|
|
}
|
|
else if (strcmp(argv[i], "-info") == 0) {
|
|
printInfo = GL_TRUE;
|
|
}
|
|
else if (strcmp(argv[i], "-stereo") == 0) {
|
|
stereo = GL_TRUE;
|
|
}
|
|
else if (strcmp(argv[i], "-fullscreen") == 0) {
|
|
fullscreen = GL_TRUE;
|
|
}
|
|
else if (i < argc-1 && strcmp(argv[i], "-geometry") == 0) {
|
|
XParseGeometry(argv[i+1], &x, &y, &winWidth, &winHeight);
|
|
i++;
|
|
}
|
|
else {
|
|
usage();
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
dpy = XOpenDisplay(dpyName);
|
|
if (!dpy) {
|
|
printf("Error: couldn't open display %s\n",
|
|
dpyName ? dpyName : getenv("DISPLAY"));
|
|
return -1;
|
|
}
|
|
|
|
make_window(dpy, "glxgears", x, y, winWidth, winHeight, &win, &ctx);
|
|
XMapWindow(dpy, win);
|
|
glXMakeCurrent(dpy, win, ctx);
|
|
query_vsync(dpy, win);
|
|
|
|
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();
|
|
|
|
/* Set initial projection/viewing transformation.
|
|
* We can't be sure we'll get a ConfigureNotify event when the window
|
|
* first appears.
|
|
*/
|
|
reshape(winWidth, winHeight);
|
|
|
|
event_loop(dpy, win);
|
|
|
|
glDeleteLists(gear1, 1);
|
|
glDeleteLists(gear2, 1);
|
|
glDeleteLists(gear3, 1);
|
|
glXMakeCurrent(dpy, None, NULL);
|
|
glXDestroyContext(dpy, ctx);
|
|
XDestroyWindow(dpy, win);
|
|
XCloseDisplay(dpy);
|
|
|
|
return 0;
|
|
}
|