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, 6 insertions, 0 deletions

diff --git a/tests/bugs/interface-lvalue.slang.expected b/tests/bugs/interface-lvalue.slang.expected
new file mode 100644
index 000000000..981dcfc29
--- /dev/null
+++ b/tests/bugs/interface-lvalue.slang.expected
@@ -0,0 +1,6 @@
+result code = 0
+standard error = {
+}
+standard output = {
+succ
+}