Texture2D LightShadingTexture       : register(t0);
RWTexture2D<float4> OutputTexture   : register(u0);

[numthreads(32, 18, 1)]
void CS_main(uint3 dispatchThreadID : SV_DispatchThreadID){
    OutputTexture[dispatchThreadID.xy] = float4(1.0f, 0.0f, 0.0f, 1.0f);    //red
}