Legalise out parameters for vertex shaders on metal (#6943)

* Handle pointer types when getting type cast style

Closes https://github.com/shader-slang/slang/issues/6025

* Move vertex shader out parameters to return type for Metal

Closes https://github.com/shader-slang/slang/issues/6025

* More asserts

* Make struct instead of tuple

* More layout preservation

* Handle same function result

* more layout

* remove layout

* a

* more debug code

* more debug code

* a

* layout working

* refactored

* more tests

* more tests

* fuse loops

* remove unused comments

* Correct filecheck usage

* debug code

* correct name and order of filecheck vars

* simplify

* Address review comments

fix warning

* simplify handling of simple vertex shaders

1 files changed, 12 insertions, 0 deletions

diff --git a/source/core/slang-list.h b/source/core/slang-list.h
index 7c96e3844..597f1b9b6 100644
--- a/source/core/slang-list.h
+++ b/source/core/slang-list.h
@@ -192,6 +192,18 @@ public:
 
     Index getCount() const { return m_count; }
     Index getCapacity() const { return m_capacity; }
+    template<typename Predicate>
+    Index countIf(Predicate predicate) const
+    {
+        Index count = 0;
+        for (Index i = 0; i < getCount(); ++i)
+        {
+            if (predicate((*this)[i]))
+                count++;
+        }
+        return count;
+    }
+
 
     const T* getBuffer() const { return m_buffer; }
     T* getBuffer() { return m_buffer; }