Adapter selection for Renderer (#923)

* * Make adapter used selectable on the command line
* Added 'adapter' to Renderer::Desc with dx11, dx12, vk honoring it
* GL will check that the renderer matches, but cannot select a specific device
* Share functionality on dx adapter selection in D3DUtil

Note - that on tests that use OpenGL and the adapter doesn't match it will ignore the test (and display a message that the appropriate device couldn't be started)

* Small function name improvement.

* Variable rename to match type.

* Fix typo in Dx12 device selection.

* * Add checking if an adapter is warp
* Improve some comments

1 files changed, 18 insertions, 0 deletions

diff --git a/tools/gfx/d3d-util.h b/tools/gfx/d3d-util.h
index 04bfae63d..0c05bed46 100644
--- a/tools/gfx/d3d-util.h
+++ b/tools/gfx/d3d-util.h
@@ -8,10 +8,13 @@
 #include "../../slang-com-ptr.h"
 #include "../../source/core/list.h"
 
+#include "flag-combiner.h"
+
 #include "render.h"
 
 #include <D3Dcommon.h>
 #include <DXGIFormat.h>
+#include <dxgi.h>
 
 namespace gfx {
 
@@ -56,6 +59,21 @@ class D3DUtil
 
         /// Append text in in, into wide char array
     static void appendWideChars(const char* in, Slang::List<wchar_t>& out);
+
+    
+    static SlangResult createFactory(DeviceCheckFlags flags, Slang::ComPtr<IDXGIFactory>& outFactory);
+
+        /// Get the dxgiModule
+    static HMODULE getDxgiModule();
+
+        /// Find adapters
+    static SlangResult findAdapters(DeviceCheckFlags flags, const Slang::UnownedStringSlice& adapaterName, IDXGIFactory* dxgiFactory, Slang::List<Slang::ComPtr<IDXGIAdapter>>& dxgiAdapters);
+        /// Find adapters
+    static SlangResult findAdapters(DeviceCheckFlags flags, const Slang::UnownedStringSlice& adapaterName, Slang::List<Slang::ComPtr<IDXGIAdapter>>& dxgiAdapters);
+
+        /// True if the adapter is warp
+    static bool isWarp(IDXGIFactory* dxgiFactory, IDXGIAdapter* adapter);
+
 };
 
 } // renderer_test