Synthesizing CUDA tests (#1183)

* When using setUniform clamp the amount of data written to the buffer size.

* CUDA implement StructuredBuffer/ByteAddressBuffer as pointer/count as is on CPU.
Allow bounds check to zero index.
Update docs.

* Synthesize tests.

* Fix bug in CUDA output.

* Fixing more tests to run on CUDA.

* Added BaseType for layout of Vector and Matrix - as they are held as int32_t vector array types.

* Enable unbound array support on CUDA.

* Added unsized array support for CUDA documentation.

1 files changed, 17 insertions, 0 deletions

diff --git a/prelude/slang-cuda-prelude.h b/prelude/slang-cuda-prelude.h
index 63388c7f3..7e6e5957d 100644
--- a/prelude/slang-cuda-prelude.h
+++ b/prelude/slang-cuda-prelude.h
@@ -38,6 +38,18 @@ struct FixedArray
     T m_data[SIZE];
 };
 
+// An array that has no specified size, becomes a 'Array'. This stores the size so it can potentially 
+// do bounds checking.  
+template <typename T>
+struct Array
+{
+    SLANG_CUDA_CALL const T& operator[](size_t index) const { SLANG_CUDA_BOUND_CHECK(index, count); return data[index]; }
+    SLANG_CUDA_CALL T& operator[](size_t index) { SLANG_CUDA_BOUND_CHECK(index, count); return data[index]; }
+    
+    T* data;
+    size_t count;
+};
+
 // Typically defined in cuda.h, but we can't ship/rely on that, so just define here
 typedef unsigned long long CUtexObject;                   
 typedef unsigned long long CUsurfObject;                  
@@ -49,6 +61,11 @@ typedef unsigned long long CUsurfObject;
 struct SamplerStateUnused;
 typedef SamplerStateUnused* SamplerState;
 
+
+// TODO(JS): Not clear yet if this can be handled on CUDA, by just ignoring.
+// For now, just map to the index type. 
+typedef size_t NonUniformResourceIndex;
+
 // Code generator will generate the specific type
 template <typename T, int ROWS, int COLS>
 struct Matrix;