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TheRock/compiler/amd-llvm/clang/test/SemaHLSL/Texture2D-Gather.hlsl
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

51 lines
1.8 KiB
HLSL

// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -fsyntax-only -verify -finclude-default-header %s
Texture2D<float4> Tex;
SamplerState Samp;
SamplerComparisonState SampCmp;
void main() {
float2 uv = float2(0.5, 0.5);
int2 offset = int2(1, 1);
float compare = 0.5;
// Gather
// Expected: Gather(SamplerState, float2, [int2])
Tex.Gather(Samp, uv);
Tex.Gather(Samp, uv, offset);
// Invalid Overloads
Tex.Gather(Samp); // expected-error {{no matching member function for call to 'Gather'}}
Tex.Gather(Samp, uv, offset, 1); // expected-error {{no matching member function for call to 'Gather'}}
// Gather variants
Tex.GatherRed(Samp, uv);
Tex.GatherGreen(Samp, uv, offset);
Tex.GatherBlue(Samp, uv);
Tex.GatherAlpha(Samp, uv, offset);
// GatherCmp
// Expected: GatherCmp(SamplerComparisonState, float2, float, [int2])
Tex.GatherCmp(SampCmp, uv, compare);
Tex.GatherCmp(SampCmp, uv, compare, offset);
// Invalid Overloads
Tex.GatherCmp(SampCmp, uv); // expected-error {{no matching member function for call to 'GatherCmp'}}
Tex.GatherCmp(SampCmp, uv, compare, offset, 1); // expected-error {{no matching member function for call to 'GatherCmp'}}
// GatherCmp variants
Tex.GatherCmpRed(SampCmp, uv, compare);
Tex.GatherCmpGreen(SampCmp, uv, compare);
Tex.GatherCmpBlue(SampCmp, uv, compare, offset);
Tex.GatherCmpAlpha(SampCmp, uv, compare);
// Type checks
// Offset must be int2 (SamplerState fails)
Tex.Gather(Samp, uv, Samp); // expected-error {{no matching member function for call to 'Gather'}}
// Compare value must be scalar float
Tex.GatherCmp(SampCmp, uv, Samp); // expected-error {{no matching member function for call to 'GatherCmp'}}
}
// expected-note@* 0+{{candidate function not viable}}