Converting Root Signature 1.0 to Root Signature 1.1

gistfile1.txt

	// Create Root Signature 1.1.
	{
		D3D12_FEATURE_DATA_ROOT_SIGNATURE featureData = {};

		// This is the highest version the sample supports. If CheckFeatureSupport succeeds, the HighestVersion returned will not be greater than this.
		featureData.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_1;

		if (FAILED(m_device->CheckFeatureSupport(D3D12_FEATURE_ROOT_SIGNATURE, &featureData, sizeof(featureData))))
		{
			featureData.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_0;
		}

		CD3DX12_DESCRIPTOR_RANGE1 ranges[3];
		ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 0, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC);
		ranges[1].Init(D3D12_DESCRIPTOR_RANGE_TYPE_SAMPLER, 1, 0);
		ranges[2].Init(D3D12_DESCRIPTOR_RANGE_TYPE_CBV, 1, 0, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC);

		CD3DX12_ROOT_PARAMETER1 rootParameters[3];
		rootParameters[0].InitAsDescriptorTable(1, &ranges[0], D3D12_SHADER_VISIBILITY_PIXEL);
		rootParameters[1].InitAsDescriptorTable(1, &ranges[1], D3D12_SHADER_VISIBILITY_PIXEL);
		rootParameters[2].InitAsDescriptorTable(1, &ranges[2], D3D12_SHADER_VISIBILITY_ALL);

		CD3DX12_VERSIONED_ROOT_SIGNATURE_DESC rootSignatureDesc;
		rootSignatureDesc.Init_1_1(_countof(rootParameters), rootParameters, 0, nullptr, D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT);

		ComPtr<ID3DBlob> signature;
		ComPtr<ID3DBlob> error;
		ThrowIfFailed(D3DX12SerializeVersionedRootSignature(&rootSignatureDesc, featureData.HighestVersion, &signature, &error));
		ThrowIfFailed(m_device->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&m_rootSignature)));
		NAME_D3D12_OBJECT(m_rootSignature);
	}