1 files changed, 54 insertions, 0 deletions
diff --git a/demo/d3d12/NvCoDx12DescriptorHeap.cpp b/demo/d3d12/NvCoDx12DescriptorHeap.cpp
new file mode 100644
index 0000000..acda590
--- /dev/null
+++ b/demo/d3d12/NvCoDx12DescriptorHeap.cpp
@@ -0,0 +1,54 @@
+/* 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. */
+
+#include "NvCoDx12DescriptorHeap.h"
+
+namespace nvidia { 
+namespace Common {
+
+Dx12DescriptorHeap::Dx12DescriptorHeap():
+	m_size(0),
+	m_currentIndex(0),
+	m_descriptorSize(0)
+{
+}
+
+int Dx12DescriptorHeap::init(ID3D12Device* device, int size, D3D12_DESCRIPTOR_HEAP_TYPE type, D3D12_DESCRIPTOR_HEAP_FLAGS flags)
+{
+	D3D12_DESCRIPTOR_HEAP_DESC srvHeapDesc = {};
+	srvHeapDesc.NumDescriptors = size;
+	srvHeapDesc.Flags = flags;
+	srvHeapDesc.Type = type;
+	NV_RETURN_ON_FAIL(device->CreateDescriptorHeap(&srvHeapDesc, IID_PPV_ARGS(&m_heap)));
+
+	m_descriptorSize = device->GetDescriptorHandleIncrementSize(type);
+	m_size = size;
+
+	return NV_OK;
+}
+
+int Dx12DescriptorHeap::init(ID3D12Device* device, const D3D12_CPU_DESCRIPTOR_HANDLE* handles, int numHandles, D3D12_DESCRIPTOR_HEAP_TYPE type, D3D12_DESCRIPTOR_HEAP_FLAGS flags)
+{
+	NV_RETURN_ON_FAIL(init(device, numHandles, type, flags));
+	D3D12_CPU_DESCRIPTOR_HANDLE dst = m_heap->GetCPUDescriptorHandleForHeapStart();
+
+	// Copy them all 
+	for (int i = 0; i < numHandles; i++, dst.ptr += m_descriptorSize)
+	{
+		D3D12_CPU_DESCRIPTOR_HANDLE src = handles[i];
+		if (src.ptr != 0)
+		{
+			device->CopyDescriptorsSimple(1, dst, src, type);
+		}
+	}
+
+	return NV_OK;
+}
+
+} // namespace Common
+} // namespace nvidia
+