Lower varying parameters as pointers instead of SSA values. (#5919)

* Add executable test on matrix-typed vertex input.
* Fix emit logic of matrix layout qualifier.
* Pass fragment shader varying input by constref to allow EvaluateAttributeAtCentroid etc. to be implemented correctly.

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/spirv/nested-entrypoint.slang b/tests/spirv/nested-entrypoint.slang
new file mode 100644
index 000000000..28e9b9c4a
--- /dev/null
+++ b/tests/spirv/nested-entrypoint.slang
@@ -0,0 +1,19 @@
+//TEST:SIMPLE(filecheck=CHECK): -target spirv -fvk-use-entrypoint-name
+
+// CHECK: OpEntryPoint
+
+RWStructuredBuffer<int> output;
+
+[shader("compute")]
+[numthreads(1,1,1)]
+void innerMain(int id : SV_DispatchThreadID)
+{
+    output[id] = id;
+}
+
+[shader("compute")]
+[numthreads(1,1,1)]
+void outerMain(int id : SV_DispatchThreadID)
+{
+    innerMain(id);
+}
\ No newline at end of file