struct a2v
{
    float4 Position : POSITION; //in object space
    float3 Normal : NORMAL;
};

struct v2f
{
    float4 Position : POSITION; //in projection space
    float4 TexCoords : TEXCOORD0;
    float3 LightDirection : TEXCOORD1;
    float3 Normal : TEXCOORD2;
};

v2f main(a2v IN,uniform float4x4 world, uniform float4x4 viewProj/*,uniform float4 ambient*/)
{
    v2f OUT;

    OUT.Position = mul(world, IN.Position);

    OUT.TexCoords.xyz = OUT.Position.xyz /8;
	OUT.TexCoords.w = 1;
	
	OUT.Position = mul(viewProj, OUT.Position);
	

    
    // calculate light vector
	/*float3 N = normalize(IN.Normal);
	float3 lightPosition = float3(0,0,0);
	float3 L = normalize(lightPosition - IN.Position.xyz); */

	// Calculate diffuse component
	//float diffuse = max(dot(N, L) , 0);

	//OUT.Color = ambient + float4(diffuse,diffuse,diffuse,1.0);
	
	//OUT.Color = float4((IN.Normal + float3(1.0,1.0,1.0)) / 2.0, 0.0);
	
	OUT.LightDirection = normalize(float3(1.0,1.0,1.0));
	OUT.Normal = IN.Normal;

    return OUT;
}

/*v2f main(a2v IN,uniform float4x4 worldViewProj,uniform float4 ambient)
{
    v2f OUT;

    OUT.Position = mul(worldViewProj, IN.Position);

    OUT.TexCoords.xyz = IN.Position.xyz / 4;
	OUT.TexCoords.w = 1;

    //OUT.Color = float4(1.0,0.0,0.0,1.0);
    
    // calculate light vector
	float3 N = normalize(IN.Normal);
	float3 lightPosition = float3(0,0,0);
	float3 L = normalize(lightPosition - IN.Position.xyz);

	// Calculate diffuse component
	float diffuse = max(dot(N, L) , 0);

	OUT.Color = ambient + float4(diffuse,diffuse,diffuse,1.0);

    return OUT;
}*/