Preliminary CUDA Half support (#1808)

* #include an absolute path didn't work - because paths were taken to always be relative.

* WIP CUDA half support.

* Working support for half on CUDA - requires cuda_fp16.h and associated files can be found.

* Fix for win32 for unused funcs.

* Fix for Clang.

* Hack to disable unused local function warning.

1 files changed, 5 insertions, 0 deletions

diff --git a/tools/gfx/cuda/render-cuda.cpp b/tools/gfx/cuda/render-cuda.cpp
index f871e6246..9d6b08122 100644
--- a/tools/gfx/cuda/render-cuda.cpp
+++ b/tools/gfx/cuda/render-cuda.cpp
@@ -1356,6 +1356,11 @@ public:
         SLANG_CUDA_RETURN_WITH_REPORT_ON_FAIL(
             cuCtxCreate(&m_context->m_context, 0, m_device), reportType);
 
+        // Not clear how to detect half support on CUDA. For now we'll assume we have it
+        {
+            m_features.add("half");
+        }
+
         // Initialize DeviceInfo
         {
             m_info.deviceType = DeviceType::CUDA;