90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
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/*
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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 "glxgears" demo to straight EGL
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* Port by Dane Rushton 10 July 2005
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*
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* No command line options.
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* Program runs for 5 seconds then exits, outputing framerate to console
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*/
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#include <math.h>
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#include <sys/time.h>
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#include <GL/gl.h>
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#include <GL/glu.h>
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#ifndef GLAPIENTRY
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#define GLAPIENTRY
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#endif
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#include <EGL/egl.h>
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#include <kos32sys.h>
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#include "eglut.h"
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void init(void);
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void reshape(int width, int height);
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void draw(void);
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void keyboard(unsigned char key);
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extern GLfloat angle;
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void idle(void)
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{
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static uint32_t t0;
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uint32_t t, dt;
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t = get_tick_count();
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dt = t - t0;
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t0 = t;
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angle += 70.0 * dt / 100; /* 70 degrees per second */
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if (angle > 3600.0)
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angle -= 3600.0;
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eglutPostRedisplay();
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}
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int main(int argc, char *argv[])
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{
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eglutInitWindowSize(384, 384);
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eglutInitAPIMask(EGLUT_OPENGL_BIT);
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eglutInit(argc, argv);
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eglutCreateWindow("eglgears");
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eglutIdleFunc(idle);
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eglutReshapeFunc(reshape);
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eglutDisplayFunc(draw);
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eglutKeyboardFunc(keyboard);
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glClearColor( 0, 0, 0, 1);
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init();
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glDrawBuffer(GL_BACK);
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eglutMainLoop();
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return 0;
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}
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