Include imported code when generating reflection data

- The basic idea is simple: be sure to enumerate code in `__import`ed modules when generating reflection info

- Note that we don't currently allow an entry point to appear in an imported module, so we only consider globlal-scope parameters

- Although there isn't currently a real implementation of namespacing, I went ahead and ensured that parameters in imported modules are treated as distinct from parameters in the user's code, even if they have the same name.

2 files changed, 35 insertions, 0 deletions

diff --git a/tests/reflection/reflect-imported-code.hlsl b/tests/reflection/reflect-imported-code.hlsl
new file mode 100644
index 000000000..b95493f7e
--- /dev/null
+++ b/tests/reflection/reflect-imported-code.hlsl
@@ -0,0 +1,21 @@
+//TEST:SIMPLE:-profile ps_4_0  -target reflection-json
+
+// Confirm that shader parameters in imported modules get reflected properly.
+
+__import reflect_imported_code;
+
+Texture2D 		t;
+SamplerState 	s;
+
+cbuffer C
+{
+	float c;
+}
+
+float4 main() : SV_Target
+{
+	return use(t,s_i)
+	     + use(c)
+	     + use(t_i, s)
+	     + use(c_i);
+}
\ No newline at end of file
diff --git a/tests/reflection/reflect-imported-code.slang b/tests/reflection/reflect-imported-code.slang
new file mode 100644
index 000000000..20beb94b8
--- /dev/null
+++ b/tests/reflection/reflect-imported-code.slang
@@ -0,0 +1,14 @@
+//TEST_IGNORE_FILE:
+
+// Imported code used by `reflect-imported-code.hlsl`
+
+float4 use(float4 val) { return val; };
+float4 use(Texture2D t, SamplerState s) { return t.Sample(s, 0.0); }
+
+Texture2D 		t_i;
+SamplerState 	s_i;
+
+cbuffer C_i
+{
+	float c_i;
+}