void display (void) {
glClearColor (1.0,0.0,0.0,1.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
orthogonalStart();
glBegin(GL_QUADS);
glVertex2f(125, 125);
glVertex2f(125, 375);
glVertex2f(375, 375);
glVertex2f(375, 125);
glEnd();
orthogonalEnd();
glutSwapBuffers();
}
void background()
{
glBindTexture( GL_TEXTURE_2D, texture );
orthogonalStart();
// texture width/height
const int iw = 500;
const int ih = 500;
glPushMatrix();
glTranslatef( -iw/2, -ih/2, 0 );
glBegin(GL_QUADS);
glTexCoord2i(0,0); glVertex2i(0, 0);
glTexCoord2i(1,0); glVertex2i(iw, 0);
glTexCoord2i(1,1); glVertex2i(iw, ih);
glTexCoord2i(0,1); glVertex2i(0, ih);
glEnd();
glPopMatrix();
orthogonalEnd();
}
