CUDA support improvements (#1168)

* Add test result for compile-to-cuda

* Add RAII for some CUDA types to simplify usage.

* First pass handling of some instrinsics on CUDA (for example transcendentals)

* CUDA working with built in intrinsics.

* Add missing CUDA prelude intrinsics.

* CUDA matches CPU output on simple-cross-compile.slang

* First pass at hlsl-scalar-float-intrinsic.slang test.

* Fix smoothstep impl on CUDA and CPU.

* Fixed step intrinsic on CUDA/CPU.

* Added operator[] to Matrix for C++, to allow row access.
Needs a fix for CUDA.

* Fixed warning on clang build.

1 files changed, 4 insertions, 1 deletions

diff --git a/source/core/slang-nvrtc-compiler.cpp b/source/core/slang-nvrtc-compiler.cpp
index 1bb2669b8..bc7d1f4f6 100644
--- a/source/core/slang-nvrtc-compiler.cpp
+++ b/source/core/slang-nvrtc-compiler.cpp
@@ -276,7 +276,10 @@ SlangResult NVRTCDownstreamCompiler::compile(const CompileOptions& options, RefP
         cmdLine.addArg("-I");
         cmdLine.addArg(include);
     }
-    
+
+    {
+        cmdLine.addArg("-std=c++14");
+    }
 
     nvrtcProgram program = nullptr;
     nvrtcResult res = m_nvrtcCreateProgram(&program, options.sourceContents.getBuffer(), options.sourceContentsPath.getBuffer(), 0, nullptr, nullptr);