dx12 dynamic lib loading + creation of device first pass.

Juliet/include/Graphics/Graphics.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <core/Common/NonNullPtr.h>
 #include <Graphics/GraphicsConfig.h>
 #include <Juliet.h>
 
@@ -8,5 +9,33 @@ namespace Juliet
 {
     struct GraphicsDevice;
 
+    // Parameters of an indirect draw command
+    struct IndirectDrawCommand
+    {
+        uint32 VertexCount;   // Number of vertices to draw
+        uint32 InstanceCount; // Number of instanced to draw
+        uint32 FirstVertex;   // Index of the first vertex to draw
+        uint32 FirstInstance; // ID of the first instance to draw
+    };
+
+    // Parameters of an INDEXED indirect draw command
+    struct IndexedIndirectDrawCommand
+    {
+        uint32 VertexCount;    // Number of vertices to draw
+        uint32 InstanceCount;  // Number of instanced to draw
+        uint32 FirstIndex;    // Base Index within the index buffer
+        int32 VertexOffset;  // Offset the vertex index into the buffer
+        uint32 FirstInstance; // ID of the first instance to draw
+    };
+
+// Parameters of an INDEXED Indirect Dispatch Command
+    struct IndirectDispatchCommand
+    {
+        uint32 X_WorkGroupCount; // Number of Workgroup to dispatch on dimension X
+        uint32 Y_WorkGroupCount; // Number of Workgroup to dispatch on dimension Y
+        uint32 Z_WorkGroupCount; // Number of Workgroup to dispatch on dimension Z
+    };
+
     extern JULIET_API GraphicsDevice* CreateGraphicsDevice(GraphicsConfig config);
+    extern JULIET_API void DestroyGraphicsDevice(NonNullPtr<GraphicsDevice> device);
 } // namespace Juliet