Move D3D12 cpp files to src/RHI/D3D12/ subdirectory

engine/src/RHI/D3D12/D3D12ConstantBufferView.cpp

@@ -0,0 +1,35 @@
+#include "XCEngine/RHI/D3D12/D3D12ConstantBufferView.h"
+
+namespace XCEngine {
+namespace RHI {
+
+D3D12ConstantBufferView::D3D12ConstantBufferView()
+    : m_handle({0})
+    , m_resource(nullptr) {
+}
+
+D3D12ConstantBufferView::~D3D12ConstantBufferView() {
+    Shutdown();
+}
+
+void D3D12ConstantBufferView::Initialize(ID3D12Device* device, ID3D12Resource* buffer, const D3D12_CONSTANT_BUFFER_VIEW_DESC* desc) {
+    m_resource = buffer;
+    m_handle = {};
+
+    if (desc) {
+        device->CreateConstantBufferView(desc, m_handle);
+    } else {
+        D3D12_CONSTANT_BUFFER_VIEW_DESC cbvDesc = {};
+        cbvDesc.BufferLocation = buffer->GetGPUVirtualAddress();
+        cbvDesc.SizeInBytes = static_cast<UINT>(buffer->GetDesc().Width);
+        device->CreateConstantBufferView(&cbvDesc, m_handle);
+    }
+}
+
+void D3D12ConstantBufferView::Shutdown() {
+    m_handle = {};
+    m_resource = nullptr;
+}
+
+} // namespace RHI
+} // namespace XCEngine