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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
75 lines
1.5 KiB
HLSL
75 lines
1.5 KiB
HLSL
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -o - -fsyntax-only %s -verify
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// expected-error@+2 {{expected identifier}}
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// expected-error@+1 {{expected unqualified-id}}
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cbuffer { ... };
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// expected-error@+1 {{expected '{'}}
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cbuffer missing_definition;
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// expected-error@+1 {{expected unqualified-id}}
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int cbuffer;
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// expected-error@+1 {{expected identifier}}
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cbuffer;
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// expected-error@+2 {{expected identifier}}
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// expected-error@+1 {{expected unqualified-id}}
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tbuffer { ... };
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// expected-error@+1 {{expected '{'}}
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tbuffer missing_definition;
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// expected-error@+1 {{expected unqualified-id}}
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int tbuffer;
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// expected-error@+1 {{expected identifier}}
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tbuffer;
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// expected-error@+1 {{expected unqualified-id}}
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cbuffer A {}, B{}
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// cbuffer inside namespace is supported.
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namespace N {
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cbuffer A {
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float g;
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}
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}
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cbuffer A {
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// expected-error@+1 {{invalid declaration inside cbuffer}}
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namespace N {
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}
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}
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cbuffer A {
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// expected-error@+1 {{invalid declaration inside cbuffer}}
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cbuffer Nested {
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}
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}
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struct S {
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// expected-error@+1 {{expected member name or ';' after declaration specifiers}}
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cbuffer what {
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int y;
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}
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};
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void func() {
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// expected-error@+1 {{expected expression}}
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tbuffer derp {
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int z;
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}
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decltype(derp) another {
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int a;
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}
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}
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// struct decl inside cb is supported.
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cbuffer A {
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struct S2 {
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float s;
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};
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S2 s;
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}
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// function decl inside cb is supported.
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cbuffer A {
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float foo_inside_cb() { return 1.2;}
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}
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