Added vector_traits.hlsl

Author: Przemog1

include/nbl/builtin/hlsl/vector_utils/vector_traits.hlsl

@@ -0,0 +1,32 @@
+#ifndef _NBL_BUILTIN_HLSL_VECTOR_UTILS_VECTOR_TRAITS_INCLUDED_
+#define _NBL_BUILTIN_HLSL_VECTOR_UTILS_VECTOR_TRAITS_INCLUDED_
+#include <nbl/builtin/hlsl/cpp_compat/basic.h>
+
+namespace nbl
+{
+namespace hlsl
+{
+
+// The whole purpose of this file is to enable the creation of partial specializations of the vector_traits for 
+// custom types without introducing circular dependencies.
+
+template<typename VecT>
+struct vector_traits;
+
+// i choose to implement it this way because of this DXC bug: https://github.com/microsoft/DirectXShaderCom0piler/issues/7007
+#define DEFINE_VECTOR_TRAITS_TEMPLATE_SPECIALIZATION(DIMENSION) \
+template<typename T> \
+struct vector_traits<vector<T, DIMENSION> > \
+{ \
+    using scalar_type = T; \
+    NBL_CONSTEXPR_STATIC_INLINE uint32_t Dimension = DIMENSION; \
+};\
+
+DEFINE_VECTOR_TRAITS_TEMPLATE_SPECIALIZATION(2)
+DEFINE_VECTOR_TRAITS_TEMPLATE_SPECIALIZATION(3)
+DEFINE_VECTOR_TRAITS_TEMPLATE_SPECIALIZATION(4)
+
+}
+}
+
+#endif