cbuffer MatrixBuffer
{
    matrix worldMatrix;
    matrix viewMatrix;
    matrix projectionMatrix;
    matrix lightViewProjMatrix;
    matrix lightViewProjMatrix2;
    matrix lightViewProjMatrix3;
};

struct VertexInput
{
    float4 position : POSITION;
    float2 texCoord0 : TEXCOORD0;
    float3 normal : NORMAL;
};

struct VS_to_PS
{
    float4 position : SV_POSITION;
    float2 texCoord0 : TEXCOORD0;
    float3 normal : NORMAL;
    float4 lightPosition1 : TEXCOORD1;
    float4 lightPosition2 : TEXCOORD2;
    float4 lightPosition3 : TEXCOORD3;
};

VS_to_PS ShadowVertexShader(VertexInput input)
{
    VS_to_PS output;
    input.position.w = 1.0f;

    output.position = mul(input.position, worldMatrix);
    output.position = mul(output.position, viewMatrix);
    output.position = mul(output.position, projectionMatrix);

    output.lightPosition1 = mul(input.position, worldMatrix);
    output.lightPosition1 = mul(output.lightPosition1, lightViewProjMatrix);
    
    output.lightPosition2 = mul(input.position, worldMatrix);
    output.lightPosition2 = mul(output.lightPosition2, lightViewProjMatrix2);
	
    output.lightPosition3 = mul(input.position, worldMatrix);
    output.lightPosition3 = mul(output.lightPosition3, lightViewProjMatrix3);
	
    output.texCoord0 = input.texCoord0;

    output.normal = normalize(mul(input.normal, (float3x3)worldMatrix));
	
    return output;
}