Author:  DigiBen

This tutorial shows how to do vertex lighting with a shader.  Vertex lighting is the process of using the standard lighting calculation to calculate a lit color value at each vertex.  The video card can then interpolate this color across the current triangle being drawn to give it the appearance of being lit.  This tutorial uses diffuse and ambient lighting.

Functions Used:  glEnable(), gluNewQuadric(), gluQuadricDrawStyle(), glTranslatef(), gluSphere(), gluDeleteQuadric(), glLoadIdentity(), gluLookAt(), glDisable(), glCreateShaderObjectARB(), glShaderSourceARB(), glCompileShaderARB(), glCreateProgramObjectARB(), glAttachObjectARB(), glLinkProgramARB(),  glUseProgramObjectARB(), glGetUniformLocationARB(), glDetachObjectARB(), glDeleteObjectARB(), glGetString(), wglGetProcAddress()