Terrain.fx

cbuffer cbPerObject {
	float4x4 WVP;
	float t;
};

struct VS_OUTPUT {
	float4 Pos : SV_POSITION;
	float2 TexCoord: TEXCOORD0;
	float2 shadowTexCoords : TEXCOORD1;
};

VS_OUTPUT VS(float4 inPos : POSITION, float2 inTexCoord : TEXCOORD) {
    VS_OUTPUT output;

    output.Pos = mul(inPos, WVP);
	output.shadowTexCoords = float2((inPos.x / 64) + (t * .217), (inPos.z / 64) + (t * .398));
	output.TexCoord = inTexCoord;

    return output;
}

Texture2D terrainTex;
Texture2D shadowTex;
SamplerState SampleType;

float4 PS(VS_OUTPUT input) : SV_TARGET {
	return terrainTex.Sample(SampleType, input.TexCoord) *  shadowTex.Sample(SampleType, input.shadowTexCoords);
}