glViewPort

[Paul <paul@xxxxxxxxxxxxxxxxxxxxxx>]

Hi,

glViewPort seems to be missing from libGL. Attached is a small piece of
code to show the problem.

Compile using

gcc -o cube cube.c -lm -lX11 -lglut -lGL -lGLU -L/usr/X11R6/lib

You should find that glViewPort cannot be found during the link stage.

TTFN

Paul
-- 
"Space", it says, "is big. Really big. You just won't believe how
vastly, hugely, mind-bogglingly big space really is. I mean, you may
think it's a long way down the road to the chemists, but that's just
*peanuts* compared to space, listen" - Hitch Hikers Guide to the Galaxy

#include <GL/gl.h>
#include <GL/freeglut.h>

void display()
{
  glClear(GL_COLOR_BUFFER_BIT);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
  gluLookAt(1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
  glutWireCube(0.5);
  glutSwapBuffers();
}

void reshape(int w, int h)
{
  glViewPort(0, 0, w, h);
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  glOrtho(-4.0, 4.0, -4.0, 4.0, -4.0, 4.0);
}

void init()
{
  glClearColor(0.0, 0.0, 0.0, 0.0);
  glColor3f(1.0, 1.0, 1.0);
}

int main(int argc, char **argv)
{
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
  glutInitWindowSize(500, 500);
  glutInitWindowPosition(0, 0);
  glutCreateWindow("cube");
  glutReshapeFunc(reshape);
  glutDisplayFunc(display);
  init();
  glutMainLoop();
}

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