Thread: OpenGL cube's faces mess up

Can someone give me the code that draws a cube in OpenGL with each face a different colour because I did it with rectangles not polygons and the faces go through each other. Thanks alot!

Code:

glPushMatrix();
            
            
            glColor3f(1.0f, 0.0f, 0.0f);
            glBegin(GL_TRIANGLE_STRIP);                            //back
                 glVertex3f(-1.0f, 0.0f, -1.0f);
                 glVertex3f(-1.0f, -1.0f, -1.0f);
                 glVertex3f(0.0f, 0.0f, -1.0f);
                 glVertex3f(0.0f, -1.0f, -1.0f);
            glEnd();
            glColor3f(1.0f, 1.0f, 0.0f);
            glBegin(GL_TRIANGLE_STRIP);                            //left
                 glVertex3f(-1.0f, 0.0f, -1.0f);
                 glVertex3f(-1.0f, -1.0f, -1.0f);
                 glVertex3f(-1.0f, 0.0f, 0.0f);
                 glVertex3f(-1.0f, -1.0f, 0.0f);
            glEnd();
            glColor3f(1.0f, 0.0f, 1.0f);
            glBegin(GL_TRIANGLE_STRIP);                            //right
                 glVertex3f(0.0f, 0.0f, -1.0f);
                 glVertex3f(0.0f, -1.0f, -1.0f);
                 glVertex3f(0.0f, 0.0f, 0.0f);
                 glVertex3f(0.0f, -1.0f, 0.0f);
            glEnd();
            glColor3f(0.0f, 1.0f, 1.0f);
            glBegin(GL_TRIANGLE_STRIP);                            //bottom
                 glVertex3f(-1.0f, -1.0f, -1.0f);
                 glVertex3f(-1.0f, -1.0f, 0.0f);
                 glVertex3f(0.0f, -1.0f, -1.0f);
                 glVertex3f(0.0f, -1.0f, 0.0f);
            glEnd();
            glColor3f(0.0f, 0.0f, 1.0f);
            glBegin(GL_TRIANGLE_STRIP);                            //top
                 glVertex3f(-1.0f, 0.0f, -1.0f);
                 glVertex3f(-1.0f, 0.0f, 0.0f);
                 glVertex3f(0.0f, 0.0f, -1.0f);
                 glVertex3f(0.0f, 0.0f, 0.0f);
            glEnd();
            glColor3f(1.0f, 0.5f, 0.5f);
            glBegin(GL_TRIANGLE_STRIP);                            //front
                 glVertex3f(-1.0f, 0.0f, 0.0f);
                 glVertex3f(-1.0f, -1.0f, 0.0f);
                 glVertex3f(0.0f, 0.0f, 0.0f);
                 glVertex3f(0.0f, -1.0f, 0.0f);
            glEnd();
            glPopMatrix();

That's my cube. If you add some rotatef's then you'll see what I mean. And about the z-buffer, could you expand, I'm learning OpenGL and the more explaining the better!

Add the following to your initialization routine.

glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);

Thanks guys, I'll try the commands at initialization. I'm not at my computer right now but I'll post back if it works or not.