texture lightMask;
sampler mainSampler : register(s0);
sampler lightSampler = sampler_state{Texture = lightMask;};

struct PixelShaderInput
{
    float4 TextureCoords: TEXCOORD0;
};

float4 PixelShaderFunction(PixelShaderInput input) : COLOR0
{
    float2 texCoord = input.TextureCoords;

    float4 mainColor = tex2D(mainSampler, texCoord);
    float4 lightColor = tex2D(lightSampler, texCoord);

    return mainColor * lightColor;
}

technique Technique1
{
    pass Pass1
    {
        PixelShader = compile ps_2_0 PixelShaderFunction();
    }
}


(3): ID3DXEffectCompiler: State 'TEXTURE' does not accept 'lightMask' as a value
ID3DXEffectCompiler: There was an error initializing the compiler