Extend `as` and `is` operator to work on generic types. (#3672)

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/language-feature/types/as-is-generic.slang b/tests/language-feature/types/as-is-generic.slang
new file mode 100644
index 000000000..6790eda37
--- /dev/null
+++ b/tests/language-feature/types/as-is-generic.slang
@@ -0,0 +1,33 @@
+// optional.slang
+
+// Test that `is` and `as` operator works on generic types.
+
+//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-slang -compute -output-using-type
+//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-slang -vk -compute -output-using-type
+//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-slang -cpu -compute -output-using-type
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+T compute<T>(T a1, T a2)
+{
+    if (a1 is float)
+    {
+        return reinterpret<T>((a1 as float).value + (a2 as float).value);
+    }
+    else if (T is int)
+    {
+        return reinterpret<T>((a1 as int).value - (a2 as int).value);
+    }
+    return T();
+}
+
+[numthreads(1, 1, 1)]
+void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
+{
+    // CHECK: 3.0
+    outputBuffer[0] = compute(1.0f, 2.0f);
+
+    // CHECK: 1.0
+    outputBuffer[1] = compute(2, 1);
+}