================
@@ -253,6 +253,37 @@ const inline float
length(__detail::HLSL_FIXED_VECTOR<float, N> X) {
return __detail::length_vec_impl(X);
}
+//===----------------------------------------------------------------------===//
+// lit builtins
+//===----------------------------------------------------------------------===//
+
+/// \fn vector<T, 4> lit(T NDotL, T NDotH, T M)
+/// \brief Returns a lighting coefficient vector.
+/// \param NDotL The dot product of the normalized surface normal and the
+/// light vector.
+/// \param NDotH The dot product of the half-angle vector and the surface
+/// normal.
+/// \param M A specular exponent.
+///
+/// This function returns a lighting coefficient vector (ambient, diffuse,
+/// specular, 1).
+
+template <typename T>
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+const inline __detail::enable_if_t<__detail::is_arithmetic<T>::Value &&
----------------
farzonl wrote:
my second question on this is if we had defined it as a regular function
instead of as a template does that mean we don't have to do any special
overload compat rules?
https://github.com/llvm/llvm-project/pull/134171
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