1 files changed, 45 insertions, 0 deletions
diff --git a/tests/diagnostics/constexpr-error.slang b/tests/diagnostics/constexpr-error.slang
new file mode 100644
index 000000000..6006450a1
--- /dev/null
+++ b/tests/diagnostics/constexpr-error.slang
@@ -0,0 +1,45 @@
+//TEST:SIMPLE:
+
+// Failure to pass compile-time-constant data
+// where it is expected.
+//
+// In this case, the place where compile-time-constant
+// data is expected is the texel offset parameter to
+// the `Texture2D.Sample` operation.
+
+Texture2D t;
+SamplerState s;
+
+cbuffer U
+{
+	float2 uv;
+	uint2 offset;
+};
+
+float4 main() : SV_Target
+{
+    float4 result = 0.0f;
+
+    // Okay, immediate constant
+    result += t.Sample(s, uv, uint2(0,0));
+
+    // Error: data passed through cbuffer isn't compile-time constant
+    result += t.Sample(s, uv, offset);
+
+    // Error: data computed via conditional isn't compile-time cosntant
+    uint ii = 0;
+    if(uv.x > 0.0f)
+    {
+    	ii = 1;
+    }
+    result += t.Sample(s, uv, uint2(ii));
+
+    // Error: data computed in loop isn't compile-time constant
+    // (and loop isn't unroll-able)
+    for(uint jj = 0; jj < uv.y; jj++)
+    {
+    	result += t.Sample(s, uv, uint2(jj));
+    }
+
+    return result;
+}
+\ No newline at end of file