Box2DJS in 3D

uniform float4x4 worldViewProj : WorldViewProjection;
uniform float3 lightWorldPos;
uniform float4 lightColor;
uniform float4x4 world : World;
uniform float4x4 view : View;
uniform float4x4 worldIT : WorldInverseTranspose;
uniform float4 emissive;
uniform float4 ambient;
uniform float4 colorMult;
sampler2D diffuseSampler;
uniform float4 specular;
uniform float shininess;

struct InVertex {
  float4 position : POSITION;
  float4 normal : NORMAL;
  float2 diffuseUV : TEXCOORD0;
};

struct OutVertex {
  float4 position : POSITION;
  float2 diffuseUV : TEXCOORD0;
  float3 n : TEXCOORD1;
  float3 l : TEXCOORD2;
  float3 v : TEXCOORD3;
};

OutVertex vs(InVertex IN) {
  OutVertex OUT;
  OUT.position = mul(IN.position, worldViewProj);
  OUT.diffuseUV = IN.diffuseUV;
  OUT.n = mul(IN.normal, worldIT).xyz;
  OUT.l = lightWorldPos - mul(IN.position, world).xyz;
  OUT.v = (view[3] - mul(IN.position, world)).xyz;
  return OUT;
}

float4 ps(OutVertex IN) : COLOR {
  float4 diffuse = tex2D(diffuseSampler, IN.diffuseUV) * colorMult;
  float3 l = normalize(IN.l); float3 n = normalize(IN.n);
  float3 r = normalize(reflect(n, l));
  float3 v = normalize(IN.v);
  float4 litR = lit(dot(n, l), dot(r, v), shininess);
  return float4((emissive + lightColor *
                 (ambient + diffuse * litR.y + specular * litR.z)).rgb,
                diffuse.a);
}

// #o3d VertexShaderEntryPoint vs
// #o3d PixelShaderEntryPoint ps
// #o3d MatrixLoadOrder RowMajor