设置绿色
glColor4ub(0, 255, 0, 255);
glVertex3f(-5.0f, 0.0f, -10.0f);
// 3....设置蓝色
glColor4ub(0, 0, 255, 255);
glVertex3f(-5.0f, -2.0f, -10.0f);
// 4....设置绿色
glColor4ub(0, 255, 0, 255);
glVertex3f(0.0f, -2.0f, -10.0f);
// 5....设置绿色
glColor4ub(0, 255, 0, 255);
glVertex3f(-5.0f, 0.0f, -10.0f);
// 3....设置蓝色
glColor4ub(0, 0, 255, 255);
glVertex3f(-5.0f, -2.0f, -10.0f);
// 4.