Support for Payload Access Qualifiers (#3448) (#6595)

* Add support for Ray Payload Access Qualifiers (PAQs) (#3448)

- Added [raypayload] attribute for struct declarations
- Implemented field validation requiring read/write access qualifiers
- Added diagnostic error for missing qualifiers
- Enabled PAQs in DXC compiler and HLSL emission
- Added new test demonstrating PAQ syntax
- Implemented proper handling of ray payload attributes in IR generation

* format code

* Cleanup: Remove unused vars

* Add check to enablePAQ only for profile >= lib_6_7

* Review Fix - Add PAQ support for DX Raytracing

add enablePAQ flag to DownstreamCompileOpitons, improve PAQ handling
update raypayload-attribute-paq.slang to ensure hlsl and dxil is
validated

* Add diagnostic test for missing paq for lib_6_7

Compile using `-disable-payload-qualifiers` aka lib_6_6 profile
raypayload-attribute-no-struct.slang and
raypayload-attribute.slang

---------

Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/source/slang/slang-compiler.cpp b/source/slang/slang-compiler.cpp
index 3839e0722..55f3846af 100644
--- a/source/slang/slang-compiler.cpp
+++ b/source/slang/slang-compiler.cpp
@@ -1732,6 +1732,11 @@ SlangResult CodeGenContext::emitWithDownstreamForEntryPoints(ComPtr<IArtifact>&
     options.libraries = SliceUtil::asSlice(libraries);
     options.libraryPaths = allocator.allocate(libraryPaths);
 
+    if (m_targetProfile.getFamily() == ProfileFamily::DX)
+    {
+        options.enablePAQ = m_targetProfile.getVersion() >= ProfileVersion::DX_6_7;
+    }
+
     // Compile
     ComPtr<IArtifact> artifact;
     auto downstreamStartTime = std::chrono::high_resolution_clock::now();