[clang] [llvm] [HLSL][DXIL] Implement `refract` intrinsic (PR #136026)

[Farzon Lotfi via llvm-commits]

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@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 %s -triple spirv-pc-vulkan-compute -verify
+
+typedef float float2 __attribute__((ext_vector_type(2)));
+
+float2 test_no_second_arg(float2 p0) {
+  return __builtin_spirv_refract(p0);
+  // expected-error at -1 {{too few arguments to function call, expected 3, have 1}}
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farzonl wrote:

you only need one less than test

https://github.com/llvm/llvm-project/pull/136026