varying vec3 normal, vert_pos;
varying vec4 diffuse, ambient, specular; // pass this precalculated colors to frag shader


void main()
{
	// pre-calc the colors
  diffuse = gl_FrontMaterial.diffuse * gl_LightSource[0].diffuse;
	ambient = gl_FrontMaterial.ambient * gl_LightSource[0].ambient;
	specular = gl_FrontMaterial.specular * gl_LightSource[0].specular;

	normal = gl_NormalMatrix * gl_Normal;
  vert_pos = (gl_ModelViewMatrix * gl_Vertex).xyz; // vert pos in world space
  gl_TexCoord[0] = gl_MultiTexCoord0;
  gl_Position = ftransform();
}