Split render-d3d12.h/cpp into a set of smaller files (#2231)

* Split render-d3d12 into numerous smaller files to make the code easier to parse

* Added all new D3D12 files created from splitting render-d3d12

* Fixed several uses of attachment still floating around; Changed resource-d3d12 and descriptor-heap-d3d12 to match naming conventions of new d3d12 implementation header files

* Readded files with name changes because changing them from inside VS apparently results in them being treated as new files

* Merged in externals changes from master

* Small cleanup changes

* Rerun CI

Co-authored-by: Theresa Foley <10618364+tangent-vector@users.noreply.github.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/tools/gfx/d3d12/d3d12-sampler.cpp b/tools/gfx/d3d12/d3d12-sampler.cpp
new file mode 100644
index 000000000..b96fb4c90
--- /dev/null
+++ b/tools/gfx/d3d12/d3d12-sampler.cpp
@@ -0,0 +1,21 @@
+// d3d12-sampler.cpp
+#include "d3d12-sampler.h"
+
+namespace gfx
+{
+namespace d3d12
+{
+
+using namespace Slang;
+
+SamplerStateImpl::~SamplerStateImpl() { m_allocator->free(m_descriptor); }
+
+Result SamplerStateImpl::getNativeHandle(InteropHandle* outHandle)
+{
+    outHandle->api = InteropHandleAPI::D3D12CpuDescriptorHandle;
+    outHandle->handleValue = m_descriptor.cpuHandle.ptr;
+    return SLANG_OK;
+}
+
+} // namespace d3d12
+} // namespace gfx