1 files changed, 38 insertions, 0 deletions
diff --git a/tests/autodiff/differentiable-constructor.slang b/tests/autodiff/differentiable-constructor.slang
new file mode 100644
index 000000000..8528f3792
--- /dev/null
+++ b/tests/autodiff/differentiable-constructor.slang
@@ -0,0 +1,38 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -shaderobj -output-using-type
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -vk -shaderobj -output-using-type
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer;
+
+interface IFoo : IDifferentiable
+{
+    [Differentiable]
+    __init();
+
+    float compute(float y);
+}
+
+struct Impl : IFoo
+{
+    float x;
+    [Differentiable]
+    __init()
+    {
+        x = 4.0;
+    }
+
+    float compute(int id) { return outputBuffer[id] = detach(x);}
+}
+
+float test<T : IFoo>(int id)
+{
+    T t;
+    return t.compute(id);
+}
+
+[numthreads(1, 1, 1)]
+void computeMain(uint id : SV_DispatchThreadID)
+{
+    // CHECK: 4.0
+    test<Impl>(id); 
+}