Fix overload resolution for `ModuleDeclarationDecl` (#6483)

* Fix overload resolution for `MemberExp`r's base expression

Also fixed an issue where `ModuleDeclarationDecl` priority during overload resolution was inverted.

* Made the fix slightly simpler..

* Update overload-resolve.slang

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/language-feature/namespaces/namespace-import/overload-resolve.slang b/tests/language-feature/namespaces/namespace-import/overload-resolve.slang
new file mode 100644
index 000000000..0b483d916
--- /dev/null
+++ b/tests/language-feature/namespaces/namespace-import/overload-resolve.slang
@@ -0,0 +1,25 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -shaderobj
+
+module test;
+
+namespace test
+{
+    vector<uint, N> f<int N>(vector<uint, N> x)
+    {
+        return x;
+    }
+}
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+[numthreads(1, 1, 1)]
+void computeMain(int3 dispatchThreadID : SV_DispatchThreadID)
+{
+    int tid = dispatchThreadID.x;
+    int inVal = tid;
+    // Should be able to resolve 'test' properly (and not get confused by the module declaration with the same name)
+    int outVal = test.f<3>(vector<uint, 3>(1, 2, 3)).y;
+    outputBuffer[tid] = outVal;
+    // CHECK: 2
+}