1struct FxaaTex { SamplerState smpl; Texture2D tex; };
2SamplerState g_tInputTexture_sampler; Texture2D g_tInputTexture;
3
4float4 lookUp(FxaaTex tex)
5{
6    return tex.tex.Sample(tex.smpl, float2(0.3, 0.4));
7}
8
9FxaaTex fillOpaque()
10{
11    FxaaTex t;
12    t.smpl = g_tInputTexture_sampler;
13    t.tex = g_tInputTexture;
14    return t;
15}
16
17float4 main() : SV_TARGET0
18{
19    FxaaTex tex1 = { g_tInputTexture_sampler, g_tInputTexture };
20    float4 res = lookUp(tex1);
21    FxaaTex tex2 = fillOpaque();
22    res += lookUp(tex2);
23    FxaaTex tex3 = tex1;
24    res += lookUp(tex3);
25
26    return res;
27}
28