782ac2182c
This is first part for support cbuffer/tbuffer.
The format for cbuffer/tbuffer is
BufferType [Name] [: register(b#)] { VariableDeclaration [: packoffset(c#.xyzw)]; ... };
More details at https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-constants
New keyword 'cbuffer' and 'tbuffer' are added.
New AST node HLSLBufferDecl is added.
Build AST for simple cbuffer/tbuffer without attribute support.
The special thing is variables declared inside cbuffer is exposed into global scope.
So isTransparentContext should return true for HLSLBuffer.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D129883
50 lines
1.1 KiB
HLSL
50 lines
1.1 KiB
HLSL
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -o - -fsyntax-only %s -verify
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// expected-note@+1 {{declared here}}
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cbuffer a {
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int x;
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};
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int foo() {
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// expected-error@+1 {{'a' does not refer to a value}}
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return sizeof(a);
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}
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// expected-error@+1 {{expected unqualified-id}}
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template <typename Ty> cbuffer a { Ty f; };
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// For back-compat reason, it is OK for multiple cbuffer/tbuffer use same name in hlsl.
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// And these cbuffer name only used for reflection, cannot be removed.
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cbuffer A {
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float A;
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}
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cbuffer A {
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float b;
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}
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tbuffer A {
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float a;
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}
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float bar() {
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// cbuffer/tbuffer name will not conflict with other variables.
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return A;
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}
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cbuffer a {
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// expected-error@+2 {{unknown type name 'oh'}}
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// expected-error@+1 {{expected ';' after top level declarator}}
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oh no!
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// expected-warning@+1 {{missing terminating ' character}}
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this isn't even valid HLSL code
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despite seeming totally reasonable
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once you understand that HLSL
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is so flaming weird.
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}
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tbuffer B {
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// expected-error@+1 {{unknown type name 'flaot'}}
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flaot f;
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}
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