derek.holloway
7502bf64a4
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45 lines
1.8 KiB
HLSL
45 lines
1.8 KiB
HLSL
// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.0-compute -x hlsl -fsyntax-only -verify \
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// RUN: -DRESOURCE="RWByteAddressBuffer" -DREGISTER=u1 %s
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// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.0-compute -x hlsl -fsyntax-only -verify \
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// RUN: -DRESOURCE="ByteAddressBuffer" -DREGISTER=t0 %s
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// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.0-compute -x hlsl -fsyntax-only -verify \
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// RUN: "-DRESOURCE=StructuredBuffer<uint>" -DREGISTER=t0 %s
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// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.0-compute -x hlsl -fsyntax-only -verify \
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// RUN: "-DRESOURCE=RWStructuredBuffer<uint>" -DREGISTER=u1 %s
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// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.0-compute -x hlsl -fsyntax-only -verify \
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// RUN: "-DRESOURCE=Buffer<uint>" -DREGISTER=t0 %s
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// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.0-compute -x hlsl -fsyntax-only -verify \
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// RUN: "-DRESOURCE=RWBuffer<uint>" -DREGISTER=u1 %s
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// expected-no-diagnostics
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// Regression test for https://github.com/llvm/llvm-project/issues/192557
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// Load on a const resource (e.g. const RWByteAddressBuffer) should be callable
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// because Load does not modify the buffer. DXC accepts this pattern.
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RESOURCE gBuf : register(REGISTER);
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RWByteAddressBuffer gOut : register(u0);
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void UseConst(const RESOURCE buf, out uint val) {
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val = buf.Load(0);
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}
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void UseConstWithStatus(const RESOURCE buf, out uint val) {
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uint status;
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val = buf.Load(0, status);
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val += status;
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}
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[numthreads(1,1,1)]
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void main() {
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const RESOURCE local = gBuf;
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uint val;
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UseConst(local, val);
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uint val2;
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UseConstWithStatus(local, val2);
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// Write the loaded values to a separate buffer so they aren't dead-code
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// eliminated.
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gOut.Store(0, val);
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gOut.Store(4, val2);
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}
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