Allow partial specialization of existential arguments. (#6487)

* Allow partial specialization of existential arguments.

* Fix.

* Add test case for improved diagnostics.

* Fix compile error.

* Fix tests.

* Fix.

* Fix test.

* Fix compile issue.

* Fix typo.

* Address comment.

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/diagnostics/resource-type-in-dynamic-dispatch.slang b/tests/diagnostics/resource-type-in-dynamic-dispatch.slang
new file mode 100644
index 000000000..114eb800b
--- /dev/null
+++ b/tests/diagnostics/resource-type-in-dynamic-dispatch.slang
@@ -0,0 +1,28 @@
+//TEST:SIMPLE(filecheck=CHECK): -target spirv
+// CHECK: type 'FooImpl' contains fields that cannot be packed into ordinary bytes for dynamic dispatch.
+interface IFoo
+{
+    float get();
+}
+
+export struct FooImpl : IFoo
+{
+    Texture2D t;
+    float get() { return 1.0; }
+}
+
+export struct FooImpl2 : IFoo
+{
+    float v;
+    float get() { return v; }
+}
+
+
+RWStructuredBuffer<float> outputBuffer;
+
+[numthreads(1,1,1)]
+void computeMain()
+{
+    IFoo f = createDynamicObject<IFoo>(0, 5);
+    outputBuffer[0] = f.get();
+}
\ No newline at end of file