OptiX ray payload read/write support in raytracing pipeline shaders (#1853)

* OptiX ray payload can now be read from and written to using the two payload register pointer method

* changing op to more descriptive name

* fixup: comment change to re-trigger CI

Co-authored-by: T. Foley <tfoleyNV@users.noreply.github.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/source/slang/slang-emit-cuda.cpp b/source/slang/slang-emit-cuda.cpp
index 09ea7ef9e..4c430cfa6 100644
--- a/source/slang/slang-emit-cuda.cpp
+++ b/source/slang/slang-emit-cuda.cpp
@@ -781,6 +781,13 @@ bool CUDASourceEmitter::tryEmitInstExprImpl(IRInst* inst, const EmitOpInfo& inOu
             m_writer->emit(")");
             return true;
         }
+        case kIROp_GetOptiXRayPayloadPtr:
+        {
+            m_writer->emit("(");
+            emitType(inst->getDataType());
+            m_writer->emit(")getOptiXRayPayloadPtr()");
+            return true;
+        }
         default: break;
     }