title: RenderMonkey - GLSL light
body: <p>I am making a shader in witch i am using a spot light, I am trying some shaders that I´ve found in the Internet before I make my own.
  I found this GLSL code:</p>
  
  <p>vec4 final_color =
      (gl_FrontLightModelProduct.sceneColor * gl_FrontMaterial.ambient) +
      (gl_LightSource[0].ambient * gl_FrontMaterial.ambient);</p>
  
  <p>Does anyone know how can i make this in the RenderMonkey? i know that i cannot use gl_LightSource[0], how can i make it?</p>