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//TEST:COMPARE_HLSL: -profile ps_4_0 -entry main
// We want to make sure that the registers Slang generates
// are used, even if there are "dead" parameter earlier in the program.
//
// In this case, we declare two each of textures, samplers, and constant
// buffers, and then only use the second one.
// Left to its own devices, the HLSL compiler would usually shift the
// object that was used up to binding slot zero, and eliminate the one
// that wasn't used.
// We expect Slang to generate explicit annotations that stop this from
// happening.
#ifdef __SLANG__
#define R(X) /**/
#define BEGIN_CBUFFER(NAME) cbuffer NAME
#define END_CBUFFER(NAME, REG) /**/
#define CBUFFER_REF(NAME, FIELD) FIELD
#else
#define R(X) X
#define BEGIN_CBUFFER(NAME) struct SLANG_ParameterGroup_##NAME
#define END_CBUFFER(NAME, REG) ; cbuffer NAME : REG { SLANG_ParameterGroup_##NAME NAME; }
#define CBUFFER_REF(NAME, FIELD) NAME.FIELD
#define tB tB_0
#define sB sB_0
#define C1 C1_0
#define c1 c1_0
#endif
float4 use(float4 val) { return val; };
float4 use(Texture2D t, SamplerState s) { return t.Sample(s, 0.0); }
Texture2D tA R(: register(t0));
Texture2D tB R(: register(t1));
SamplerState sA R(: register(s0));
SamplerState sB R(: register(s1));
BEGIN_CBUFFER(C0)
{
float c0;
}
END_CBUFFER(C0, register(b0))
BEGIN_CBUFFER(C1)
{
float c1;
}
END_CBUFFER(C1, register(b1))
float4 main() : SV_TARGET
{
return use(tB,sB) + use(CBUFFER_REF(C1,c1));
}
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