I am starting to learn OpenGL and trying a simple hello world program, and I am getting errors.
My system has OS 10.3, and I am working with CodeWorrior IDE4.04 under OS 9 on.
Following is the program I am trying (from http://nehe.gamedev.net/ ) When I Run the program it asks for arguments and if I hit OK without typing in anything it ends with error message.
//
// This code was created by Jeff Molofee '99
//
// If you’ve found this code useful, please let me know.
//
// Visit me at www.demonews.com/hosted/nehe
//
/**************************************************************/
// This code was ported to MacOS by Tony Parker.
// I’d also appreciate it if you could drop me a line if you found
// this code useful.
//
// Tony Parker - asp@usc.edu
//
// Have a nice day.
#include <stdio.h> // Header File For Standard Input / Output
#include <stdarg.h> // Header File For Variable Argument Routines
#include <string.h> // Header File For String Management
#include <stdlib.h>
#include <gl.h> // Header File For The OpenGL32 Library
#include <glu.h> // Header File For The GLu32 Library
#include <glut.h> // Header File For The GLUT Library
#include <math.h>
// Constants -----------------------------------------------------------------
#define kWindowWidth 400
#define kWindowHeight 300
// Function Prototypes -------------------------------------------------------
GLvoid InitGL(GLvoid);
GLvoid DrawGLScene(GLvoid);
GLvoid ReSizeGLScene(int Width, int Height);
// Main ----------------------------------------------------------------------
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize (kWindowWidth, kWindowHeight);
glutInitWindowPosition (100, 100);
glutCreateWindow (argv[0]);
InitGL();
glutDisplayFunc(DrawGLScene);
glutReshapeFunc(ReSizeGLScene);
glutMainLoop();
return 0;
}
// Init ----------------------------------------------------------------------
GLvoid InitGL(GLvoid)
{
glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // This Will Clear The Background Color To Black
glClearDepth(1.0); // Enables Clearing Of The Depth Buffer
glDepthFunc(GL_LESS); // The Type Of Depth Test To Do
glEnable(GL_DEPTH_TEST); // Enables Depth Testing
glShadeModel(GL_SMOOTH); // Enables Smooth Color Shading
glMatrixMode(GL_PROJECTION);
glLoadIdentity(); // Reset The Projection Matrix
gluPerspective(45.0f,(GLfloat)kWindowWidth/(GLfloat)kWindowHeight,0.1f,100.0f); // Calculate The Aspect Ratio Of The Window
glMatrixMode(GL_MODELVIEW);
}
// DrawGLScene ---------------------------------------------------------------
GLvoid DrawGLScene(GLvoid)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer
glLoadIdentity(); // Reset The View
glTranslatef(-1.5f,0.0f,-6.0f);
glBegin(GL_POLYGON);
glVertex3f( 0.0f, 1.0f, 0.0f);
glVertex3f(-1.0f,-1.0f, 0.0f);
glVertex3f( 1.0f,-1.0f, 0.0f);
glEnd();
glTranslatef(3.0f,0.0f,0.0f);
glBegin(GL_QUADS);
glVertex3f(-1.0f, 1.0f, 0.0f);
glVertex3f( 1.0f, 1.0f, 0.0f);
glVertex3f( 1.0f,-1.0f, 0.0f);
glVertex3f(-1.0f,-1.0f, 0.0f);
glEnd();
glFlush();
}
// ReSizeGLScene ------------------------------------------------------------
GLvoid ReSizeGLScene(int Width, int Height)
{
glViewport (0, 0, (GLsizei) Width, (GLsizei) Height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0, (GLfloat) Width / (GLfloat) Height, 0.1, 100.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
The glut_error_log file says
GLUT: Fatal Error in a.out: window could not be created.