Preliminary support for realtime clock (#2772)

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

* Initial support for realtime clock.

* Add realtime-clock render feature where seems appropriate.

* Fixes to make NVAPI compile properly.
Change realtime-clock.slang check to use maths that can't overflow.

1 files changed, 4 insertions, 1 deletions

diff --git a/tools/gfx/cuda/cuda-device.cpp b/tools/gfx/cuda/cuda-device.cpp
index f81bcfe99..4aeecb606 100644
--- a/tools/gfx/cuda/cuda-device.cpp
+++ b/tools/gfx/cuda/cuda-device.cpp
@@ -179,9 +179,12 @@ SLANG_NO_THROW SlangResult SLANG_MCALL DeviceImpl::initialize(const Desc& desc)
     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
     {
+        // Not clear how to detect half support on CUDA. For now we'll assume we have it
         m_features.add("half");
+        
+        // CUDA has support for realtime clock
+        m_features.add("realtime-clock");
     }
 
     cudaDeviceProp deviceProps;