Fix minor issues in D3D12

Source/Engine/GraphicsDevice/DirectX/DX12/GPUContextDX12.cpp

@@ -269,6 +269,7 @@ void GPUContextDX12::Reset()
         _currentAllocator = _device->GetCommandQueue()->RequestAllocator();
         _commandList->Reset(_currentAllocator, nullptr);
     }
+    IsOpen = true;
 
     // Setup initial state
     _currentState = nullptr;
@@ -327,6 +328,7 @@ uint64 GPUContextDX12::Execute(bool waitForCompletion)
     _currentState = nullptr;
 
     // Execute commands
+    IsOpen = false;
     const uint64 fenceValue = queue->ExecuteCommandList(_commandList);
 
     // Cleanup used allocator

Source/Engine/GraphicsDevice/DirectX/DX12/GPUContextDX12.h

@@ -93,6 +93,9 @@ public:
         return _commandList;
     }
 
+    // Flag for command list state.
+    bool IsOpen = false;
+
     uint64 FrameFenceValues[2];
 
 public:

Source/Engine/GraphicsDevice/DirectX/DX12/GPUTextureDX12.cpp

@@ -171,7 +171,7 @@ bool GPUTextureDX12::OnInit()
     if (isWrite)
     {
         _device->Locker.Lock();
-        if (IsInMainThread() && _device->IsRendering())
+        if (IsInMainThread() && _device->IsRendering() && _device->GetMainContextDX12()->IsOpen)
             _device->GetMainContextDX12()->GetCommandList()->DiscardResource(_resource, nullptr);
         else
             _device->PendingResourceDiscards.Add(_resource);

Source/Engine/GraphicsDevice/DirectX/GPUDeviceDX.h

@@ -83,6 +83,7 @@ protected:
 #if GRAPHICS_API_DIRECTX12
         case D3D_FEATURE_LEVEL_12_0:
         case D3D_FEATURE_LEVEL_12_1:
+        case D3D_FEATURE_LEVEL_12_2:
             return ShaderProfile::DirectX_SM5;
 #endif
         default: