playing around, this is very broken

goop.c

#include <GL/glut.h>

#define GOOP_WIDTH 1000 
#define GOOP_HEIGHT 1000
static GLubyte GoopImage[GOOP_WIDTH][GOOP_HEIGHT][3];

void goop(void) {
  int i, j, k;
  for (i = 2; i < GOOP_HEIGHT-2; i++) {
    for (j = 10; j < GOOP_WIDTH-25; j++) {
      for (k = 0; k < 3; k++) {
        int r = 0;
        r += GoopImage[i-1][j-1][k];
        r += GoopImage[i-0][j-1][k];
        r += GoopImage[i+1][j-1][k];
        r = r / 3;
        if(r > 180) {
          GoopImage[i+1][j+1][k] = r;
        } else if (r > 65) {
          GoopImage[i-1][j-1][k] = r;
        } else {
          GoopImage[i+0][j-0][k] = r;
        }
      }
    }
  }
}

void initGoop(void) {
  int i, j, c;
  for (i = 0; i < GOOP_HEIGHT; i++)
    for (j = 0; j < GOOP_WIDTH; j++) {
      GoopImage[i][j][0] = (GLubyte) rand() % 255;
      GoopImage[i][j][1] = (GLubyte) rand() % 255;
      GoopImage[i][j][2] = (GLubyte) rand() % 255;
    }
}
void init() {
  glClearColor(0.0, 0.0, 0.0, 0.0);
  glShadeModel(GL_FLAT);
  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
}

void display() {
  //glClear(GL_COLOR_BUFFER_BIT);
  glRasterPos2i(0, 0);
  goop();
  for(int i = 0; i < 100; i++) {
    int sx = rand()%(GOOP_WIDTH-25);
    int sy = rand()%(GOOP_HEIGHT-25);
    for(int x1 = 0; x1 < rand() % 20; x1++) {
      for(int y1 = 0; y1 < rand() % 20; y1++) {
        int r = rand()%255;
        int g = rand()%255;
        int b = rand()%255;
        GoopImage[sx+x1][sy+y1][0] = (GLubyte) r;
        GoopImage[sx+x1][sy+y1][1] = (GLubyte) g;
        GoopImage[sx+x1][sy+y1][2] = (GLubyte) b;
      }
    }
  }
  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
  glDrawPixels(GOOP_WIDTH, GOOP_HEIGHT, GL_RGB, GL_UNSIGNED_BYTE, GoopImage);
  glFlush();
  glutSwapBuffers();
  glutPostRedisplay();
}

void reshape(int w, int h) {
  gluOrtho2D(0.0f, 0.0f, w, h);
  glViewport(0, 0, w/32, h/32);
}

int main(int argc, char **argv) {
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_RGB);
  glutInitWindowSize (640, 480);
  glutCreateWindow(argv[0]);
  glutDisplayFunc(display);
  glutReshapeFunc(reshape);
  init();
  initGoop();
  glutMainLoop();
  return 0;
}