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/*
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* This is a port of the infamous "glxgears" demo to straight EGL
* Port by Dane Rushton 10 July 2005
*
* No command line options.
* Program runs for 5 seconds then exits, outputing framerate to console
*/
#define MAXFRAME 5
#define PFINISH 1
#include <stdio.h>
#include <math.h>
#include <GL/gl.h>
#include <GL/glut.h>
static GLuint win_width = 256;
static GLuint win_height = 230;
static GLuint frames = 0;
static void draw(void)
{
#if PFINISH
fprintf(stderr, "EE CLEAR -----------------------------------------------------\n");
#endif
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
#if PFINISH
glFinish();
fprintf(stderr, "EE CLEAR _____________________________________________________\n");
#endif
#if PFINISH
fprintf(stderr, "EE DRAW ------------------------------------------------------\n");
#endif
glBegin(GL_TRIANGLES);
glColor3f(0,0,1);
glVertex3f( 0.9, -0.9, -30.0);
glColor3f(1,0,0);
glVertex3f( 0.9, 0.9, -30.0);
glColor3f(0,1,0);
glVertex3f(-0.9, 0.0, -30.0);
glEnd();
#if PFINISH
glFinish();
fprintf(stderr, "EE DRAW ______________________________________________________\n");
#endif
glutSwapBuffers();
frames++;
if (frames >= MAXFRAME) {
glFinish();
exit(0);
}
}
static void idle(void)
{
static double t0 = -1.;
double dt, t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
if (t0 < 0.0)
t0 = t;
dt = t - t0;
t0 = t;
glutPostRedisplay();
}
/* new window size or exposure */
static void reshape(int width, int height)
{
glViewport(0, 0, (GLint)width, (GLint)height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
static void init(void)
{
static GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 };
glLightfv(GL_LIGHT0, GL_POSITION, pos);
glEnable(GL_CULL_FACE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_DEPTH_TEST);
glEnable(GL_NORMALIZE);
}
int main(int argc, char *argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_STENCIL);
glutInitWindowSize(win_width, win_height);
glutCreateWindow("glgears");
glutIdleFunc(idle);
glutReshapeFunc(reshape);
glutDisplayFunc(draw);
init();
reshape(win_width, win_height);
glDrawBuffer(GL_BACK);
glutMainLoop();
return 0;
}
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