OSX上C OpenGL程序的基本框架

据我所知,NeHe教程专门针对Windows而言,非常适合更高级别的东西.但是,当涉及到基础知识时,它们可能变得过于复杂.所以这是一个简单的骨架程序,用于仅使用过剩和opengl功能渲染三角形.如果您想成为Apple特定的,请尝试使用agl.

// The OpenGL libraries, make sure to include the GLUT and OpenGL frameworks
#include 
#include 
#include 

// This is just an example using basic glut functionality.
// If you want specific Apple functionality, look up AGL

void init() // Called before main loop to set up the program
{
    glClearColor(0.0, 0.0, 0.0, 0.0);
    glEnable(GL_DEPTH_TEST);
    glShadeModel(GL_SMOOTH);
}

// Called at the start of the program, after a glutPostRedisplay() and during idle
// to display a frame
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glLoadIdentity();

    glBegin(GL_TRIANGLES);
        glVertex3f(0.0, 0.0, -10.0);
        glVertex3f(1.0, 0.0, -10.0);
        glVertex3f(0.0, 1.0, -10.0);
    glEnd();

    glutSwapBuffers();
}

// Called every time a window is resized to resize the projection matrix
void reshape(int w, int h)
{
    glViewport(0, 0, w, h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glFrustum(-0.1, 0.1, -float(h)/(10.0*float(w)), float(h)/(10.0*float(w)), 0.5, 1000.0);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}


int main(int argc, char **argv)
{
    glutInit(&argc, argv); // Initializes glut

    // Sets up a double buffer with RGBA components and a depth component
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH | GLUT_RGBA);

    // Sets the window size to 512*512 square pixels
    glutInitWindowSize(512, 512);

    // Sets the window position to the upper left
    glutInitWindowPosition(0, 0);

    // Creates a window using internal glut functionality
    glutCreateWindow("Hello!");

    // passes reshape and display functions to the OpenGL machine for callback
    glutReshapeFunc(reshape);
    glutDisplayFunc(display);
    glutIdleFunc(display);

    init();

    // Starts the program.
    glutMainLoop();
    return 0;
}