From 2bdd6d319913191faef7a28963f3424389f7d18a Mon Sep 17 00:00:00 2001
From: ssdfasd <2156608475@qq.com>
Date: Sun, 15 Mar 2026 18:36:11 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=AE=9E=E7=8E=B0=20D3D12RootSignature?=
 =?UTF-8?q?=20=E6=A0=B9=E7=AD=BE=E5=90=8D=E7=B1=BB?=
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- 添加 D3D12RootSignature.h 头文件
- 实现 ID3D12RootSignature 封装
- 支持序列化根签名描述符
- 测试通过
---
 engine/CMakeLists.txt                         |  2 +
 .../XCEngine/RHI/D3D12/D3D12RootSignature.h   | 29 +++++++++++++
 engine/src/RHI/D3D12RootSignature.cpp         | 41 +++++++++++++++++++
 3 files changed, 72 insertions(+)
 create mode 100644 engine/include/XCEngine/RHI/D3D12/D3D12RootSignature.h
 create mode 100644 engine/src/RHI/D3D12RootSignature.cpp

diff --git a/engine/CMakeLists.txt b/engine/CMakeLists.txt
index 64b641d7..9f0a8c73 100644
--- a/engine/CMakeLists.txt
+++ b/engine/CMakeLists.txt
@@ -89,6 +89,7 @@ add_library(XCEngine STATIC
     include/XCEngine/RHI/D3D12/D3D12CommandAllocator.h
     include/XCEngine/RHI/D3D12/D3D12CommandList.h
     include/XCEngine/RHI/D3D12/D3D12DescriptorHeap.h
+    include/XCEngine/RHI/D3D12/D3D12RootSignature.h
     include/XCEngine/RHI/D3D12/D3D12SwapChain.h
     include/XCEngine/RHI/D3D12/D3D12Fence.h
     include/XCEngine/RHI/D3D12/D3D12Screenshot.h
@@ -97,6 +98,7 @@ add_library(XCEngine STATIC
     src/RHI/D3D12CommandAllocator.cpp
     src/RHI/D3D12CommandList.cpp
     src/RHI/D3D12DescriptorHeap.cpp
+    src/RHI/D3D12RootSignature.cpp
     src/RHI/D3D12SwapChain.cpp
     src/RHI/D3D12Fence.cpp
     src/RHI/D3D12Screenshot.cpp
diff --git a/engine/include/XCEngine/RHI/D3D12/D3D12RootSignature.h b/engine/include/XCEngine/RHI/D3D12/D3D12RootSignature.h
new file mode 100644
index 00000000..a6b4c595
--- /dev/null
+++ b/engine/include/XCEngine/RHI/D3D12/D3D12RootSignature.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <d3d12.h>
+#include <wrl/client.h>
+
+#include "../Enums.h"
+#include "D3D12Enum.h"
+
+using Microsoft::WRL::ComPtr;
+
+namespace XCEngine {
+namespace RHI {
+
+class D3D12RootSignature {
+public:
+    D3D12RootSignature();
+    ~D3D12RootSignature();
+
+    bool Initialize(ID3D12Device* device, const D3D12_ROOT_SIGNATURE_DESC& desc);
+    void Shutdown();
+
+    ID3D12RootSignature* GetRootSignature() const { return m_rootSignature.Get(); }
+
+private:
+    ComPtr<ID3D12RootSignature> m_rootSignature;
+};
+
+} // namespace RHI
+} // namespace XCEngine
diff --git a/engine/src/RHI/D3D12RootSignature.cpp b/engine/src/RHI/D3D12RootSignature.cpp
new file mode 100644
index 00000000..92d304b6
--- /dev/null
+++ b/engine/src/RHI/D3D12RootSignature.cpp
@@ -0,0 +1,41 @@
+#include "XCEngine/RHI/D3D12/D3D12RootSignature.h"
+
+namespace XCEngine {
+namespace RHI {
+
+D3D12RootSignature::D3D12RootSignature() {
+}
+
+D3D12RootSignature::~D3D12RootSignature() {
+    Shutdown();
+}
+
+bool D3D12RootSignature::Initialize(ID3D12Device* device, const D3D12_ROOT_SIGNATURE_DESC& desc) {
+    ID3DBlob* signature = nullptr;
+    ID3DBlob* error = nullptr;
+
+    HRESULT hResult = D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error);
+    if (FAILED(hResult)) {
+        if (error) {
+            error->Release();
+        }
+        return false;
+    }
+
+    hResult = device->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&m_rootSignature));
+    
+    signature->Release();
+    
+    if (FAILED(hResult)) {
+        return false;
+    }
+
+    return true;
+}
+
+void D3D12RootSignature::Shutdown() {
+    m_rootSignature.Reset();
+}
+
+} // namespace RHI
+} // namespace XCEngine