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1 #include <stdio.h>
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2 #include <GL/glut.h>
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3
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4
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5 #define HEIGHT 1080
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6 #define WIDTH 1920
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7
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8
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9 void setup() {
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10
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11 // Set background dark
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12 glClearColor(0.0, 0.0, 0.0, 1.0);
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13
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14 // Set point color and size to 1 pixel
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15 glColor3f(0.0, 1.0, 0.0);
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16 glPointSize(5.0);
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17
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18 // Matrix projection and reset with identity
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19 glMatrixMode(GL_PROJECTION);
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20 glLoadIdentity();
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21
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22 // Set the coordinates to be used with the viewport
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23 gluOrtho2D(0, WIDTH, HEIGHT, 0);
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24 }
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25
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26
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27 void display() {
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28 glClear(GL_COLOR_BUFFER_BIT);
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29 glBegin(GL_POINTS);
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30 glVertex2i(1920/2, 1080/2);
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31 glEnd();
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32 glFlush();
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33 }
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34
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35
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36 int main(int argc, char** argv) {
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37 glutInit(&argc, argv);
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38 glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
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39 glutInitWindowSize(WIDTH, HEIGHT);
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40 glutCreateWindow("OpenGL Window");
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41 setup();
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42 glutDisplayFunc(display);
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43 glutMainLoop();
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44
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45 return 0;
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46 }
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