#define UNITY_DIRBASIS \
const float3x3 unity_DirBasis = float3x3( \
  float3( 0.81649658,  0.0,        0.57735028), \
  float3(-0.40824830,  0.70710679, 0.57735027), \
  float3(-0.40824829, -0.70710678, 0.57735026) \
);

inline half4 DirLM (fixed3 scale, fixed3 normal)
{
	UNITY_DIRBASIS
	half3 normalInDirBasis = saturate (mul (unity_DirBasis, normal));
	float f = dot (normalInDirBasis, scale);
	return f;
}

sampler2D mytex;

fixed4 main (half2 uv : TEXCOORD0, fixed3 normal : TEXCOORD1) : COLOR
{
	fixed3 scale = tex2D(mytex, uv).rgb;
	return DirLM (scale, normal);
}