From 83a42cb76feb1f702ff730040f359cabc01c571a Mon Sep 17 00:00:00 2001
From: Ellie Hermaszewska <ellieh@nvidia.com>
Date: Fri, 4 Apr 2025 15:25:20 +0800
Subject: Do no fail on missing no_diff annotation on non-differentiable
 (inputs and output) function outputs (#6737)

Closes https://github.com/shader-slang/slang/issues/6632
---
 tests/bugs/gh-6632.slang | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 tests/bugs/gh-6632.slang

(limited to 'tests')

diff --git a/tests/bugs/gh-6632.slang b/tests/bugs/gh-6632.slang
new file mode 100644
index 000000000..f9240e63b
--- /dev/null
+++ b/tests/bugs/gh-6632.slang
@@ -0,0 +1,29 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK):-cpu
+
+// CHECK: 40000000
+
+//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
+
+// Non-differentiable function with no_diff parameters and return type
+no_diff float targetFunc(no_diff float x)
+{
+    return x * 2.0f;
+}
+
+[Differentiable]
+float errorForward(no_diff float x)
+{
+    float result = targetFunc(x);
+    return result;
+}
+
+RWStructuredBuffer<float> outputBuffer;
+
+[numthreads(1, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    float input = 1.0f;
+
+    outputBuffer[0] = errorForward(input);
+}
+
-- 
cgit v1.2.3