Seungha Yang fab1c5f953 d3d12: Use d3dx12.h helper library
... and remove manually implemented helper methods

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5807>
2023-12-14 18:08:00 +09:00
..
2023-12-14 18:08:00 +09:00