struct vertex_in
{
	float3 position		: POSITION;
	float3 normal		: NORMAL;
	float3 tangent		: TANGENT;
	float4 weights		: BLENDWEIGHT;
	int4 indices		: BLENDINDICES;
	float2 uv			: TEXCOORD0;
};

struct vertex_out
{
	float4 position		: POSITION;
	float2 texCoord		: TEXCOORD0;
	float3 normal		: TEXCOORD1;
};


// the main function
vertex_out main(	vertex_in IN,
					uniform float4x4 bones[5],
					uniform float4x4 modelView : state.matrix.modelview[0],
					uniform float4x4 projection : state.matrix.projection
					)

{
	vertex_out OUT;
	
	// skin the vertex position and normal
	float4 position = float4(IN.position, 1);
	float4 normal	= float4(IN.normal, 0);

	// the skinned attributes
	float3 skinnedPos    = (float3)0;
	float3 skinnedNormal = (float3)0;
	
	// perform the skinning
	for(unsigned int i=0; i<4; ++i)
	{
		skinnedPos    += (mul( position, bones[IN.indices] ) * IN.weights).xyz;
		skinnedNormal += (mul( normal, bones[IN.indices] ) * IN.weights).xyz;
	}

	skinnedPos		= mul( modelView, float4(skinnedPos,1) ).xyz;
	OUT.position	= mul( projection, float4(skinnedPos,1) );
	OUT.normal		= mul( modelView, float4(skinnedNormal, 1) ).xyz;
	OUT.texCoord	= IN.uv;

	return OUT;
}