2 files changed, 57 insertions, 0 deletions
diff --git a/tests/language-feature/shader-params/interface-shader-param-ordinary.slang b/tests/language-feature/shader-params/interface-shader-param-ordinary.slang
new file mode 100644
index 000000000..8d475254f
--- /dev/null
+++ b/tests/language-feature/shader-params/interface-shader-param-ordinary.slang
@@ -0,0 +1,53 @@
+// interface-shader-param-ordinary.slang
+
+// This test is for interface-type shader parameters that
+// get specialized to types that include "ordinary" data
+// but also don't fit into the allocation provided for
+// them in the existential-type field itself.
+
+//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute
+//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 -profile sm_6_0 -use-dxil
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute
+
+interface IModifier
+{
+    int modify(int value);
+}
+
+//TEST_INPUT:set gOutputBuffer = out ubuffer(data=[0 0 0 0], stride=4)
+RWStructuredBuffer<int> gOutputBuffer;
+
+//TEST_INPUT:set delta = 65536
+uniform int delta;
+
+//TEST_INPUT:set gModifier = new MyModifier{ ubuffer(data=[4 3 2 1], stride=4), 3 } }
+uniform IModifier gModifier;
+
+int test(int val)
+{
+    return gModifier.modify(val) + delta;
+}
+
+
+[numthreads(4, 1, 1)]
+void computeMain(
+    uint3       dispatchThreadID : SV_DispatchThreadID)
+{
+    let tid = dispatchThreadID.x;
+
+    let inputVal : int = tid;
+    let outputVal = test(inputVal);
+
+    gOutputBuffer[tid] = outputVal;
+}
+
+struct MyModifier : IModifier
+{
+    RWStructuredBuffer<int> data;
+    int extra;
+
+    int modify(int val)
+    {
+        return val*65536 + data[val]*256 + val*extra;
+    }
+}
diff --git a/tests/language-feature/shader-params/interface-shader-param-ordinary.slang.expected.txt b/tests/language-feature/shader-params/interface-shader-param-ordinary.slang.expected.txt
new file mode 100644
index 000000000..434576d50
--- /dev/null
+++ b/tests/language-feature/shader-params/interface-shader-param-ordinary.slang.expected.txt
@@ -0,0 +1,4 @@
+10400
+20303
+30206
+40109