1 files changed, 89 insertions, 0 deletions
diff --git a/demo/d3d12/NvCoDx12HelperUtil.cpp b/demo/d3d12/NvCoDx12HelperUtil.cpp
new file mode 100644
index 0000000..46e2265
--- /dev/null
+++ b/demo/d3d12/NvCoDx12HelperUtil.cpp
@@ -0,0 +1,89 @@
+/* Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+* NVIDIA CORPORATION and its licensors retain all intellectual property
+* and proprietary rights in and to this software, related documentation
+* and any modifications thereto.  Any use, reproduction, disclosure or
+* distribution of this software and related documentation without an express
+* license agreement from NVIDIA CORPORATION is strictly prohibited. */
+
+// Make the DXGI_DEBUG_D3D12 symbol defined in this compilation unit, to avoid link problems
+#define INITGUID
+
+#include "NvCoDx12HelperUtil.h"
+
+namespace nvidia {
+namespace Common {
+
+void Dx12HelperUtil::calcSrvDesc(ID3D12Resource* resource, DXGI_FORMAT pixelFormat, D3D12_SHADER_RESOURCE_VIEW_DESC& descOut)
+{
+	// Get the desc
+	return calcSrvDesc(resource->GetDesc(), pixelFormat, descOut);
+}
+
+void Dx12HelperUtil::calcSrvDesc(const D3D12_RESOURCE_DESC& desc, DXGI_FORMAT pixelFormat, D3D12_SHADER_RESOURCE_VIEW_DESC& descOut)
+{
+	
+	// create SRV
+	descOut = D3D12_SHADER_RESOURCE_VIEW_DESC();
+	
+	descOut.Format = (pixelFormat == DXGI_FORMAT_UNKNOWN) ? DxFormatUtil::calcFormat(DxFormatUtil::USAGE_SRV, desc.Format) : pixelFormat;
+	descOut.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
+	if (desc.DepthOrArraySize == 1)
+	{
+		descOut.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
+
+		descOut.Texture2D.MipLevels = desc.MipLevels;
+		descOut.Texture2D.MostDetailedMip = 0;
+		descOut.Texture2D.PlaneSlice = 0;
+		descOut.Texture2D.ResourceMinLODClamp = 0.0f;
+	}
+	else if (desc.DepthOrArraySize == 6)
+	{
+		descOut.ViewDimension = D3D12_SRV_DIMENSION_TEXTURECUBE;
+
+		descOut.TextureCube.MipLevels = desc.MipLevels;
+		descOut.TextureCube.MostDetailedMip = 0;
+		descOut.TextureCube.ResourceMinLODClamp = 0;
+	}
+	else
+	{
+		descOut.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2DARRAY;
+
+		descOut.Texture2DArray.ArraySize = desc.DepthOrArraySize;
+		descOut.Texture2DArray.MostDetailedMip = 0;
+		descOut.Texture2DArray.MipLevels = desc.MipLevels;
+		descOut.Texture2DArray.FirstArraySlice = 0;
+		descOut.Texture2DArray.PlaneSlice = 0;
+		descOut.Texture2DArray.ResourceMinLODClamp = 0;
+	}
+}
+
+/* static */void Dx12HelperUtil::reportLiveObjects()
+{
+	IDXGIDebug* dxgiDebug;
+	int res = DxDebugUtil::getDebugInterface(&dxgiDebug);
+
+	if (NV_FAILED(res) || !dxgiDebug)
+	{
+		printf("Unable to access debug interface -> can't report live objects");
+		return;
+	}
+	dxgiDebug->ReportLiveObjects(DXGI_DEBUG_D3D12, DXGI_DEBUG_RLO_DETAIL);
+}
+
+/* static */int Dx12HelperUtil::serializeRootSigniture(const D3D12_ROOT_SIGNATURE_DESC& desc, D3D_ROOT_SIGNATURE_VERSION signitureVersion, ComPtr<ID3DBlob>& sigBlobOut)
+{
+	ComPtr<ID3DBlob> error;
+	int res = D3D12SerializeRootSignature(&desc, signitureVersion, &sigBlobOut, &error);
+	if (NV_SUCCEEDED(res))
+	{
+		return res;
+	}
+
+	char* errorText = (char*)error->GetBufferPointer();
+
+	printf("Unable to serialize Dx12 signature: %s\n", errorText);
+	return res;
+}
+
+} // namespace Common
+} // namespace nvidia