Add gfx interface definition in Slang. (#2364)

* Add gfx interface definition in Slang.

- add gfx interface definitons in Slang.
- fix slang compiler to correctly type-check `out` interface argument.
- modify gfx interface to be fully COM compatible
- add convenient ShaderProgram creation methods to gfx.

* Fix compile errors and warnings.

* Update project files

* Fix cuda.

* Properly implement queryInterface in command encoder impls.

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/source/slang/slang-check-overload.cpp b/source/slang/slang-check-overload.cpp
index 879c49da0..36c93a2e2 100644
--- a/source/slang/slang-check-overload.cpp
+++ b/source/slang/slang-check-overload.cpp
@@ -1443,8 +1443,15 @@ namespace Slang
             arg = maybeOpenRef(arg);
         }
 
-        for (auto& arg : expr->arguments)
+        auto funcType = as<FuncType>(funcExprType);
+        for (Index i = 0; i < expr->arguments.getCount(); i++)
         {
+            auto& arg = expr->arguments[i];
+            if (funcType && i < (Index)funcType->getParamCount())
+            {
+                if (funcType->getParamDirection(i) == kParameterDirection_Out)
+                    continue;
+            }
             arg = maybeOpenExistential(arg);
         }