feat(RHI): 添加 RHIFactory 工厂类

- 新增 RHIFactory 头文件和实现，支持通过 RHIType 或字符串创建设备
- 修复 D3D12Buffer 缺失的 Map/Unmap/SetData 实现
- 添加 RHI 工厂测试用例
- 更新 CMakeLists.txt 添加新文件

tests/CMakeLists.txt

@@ -38,6 +38,7 @@ add_subdirectory(memory)
 add_subdirectory(threading)
 add_subdirectory(debug)
 add_subdirectory(D3D12)
+add_subdirectory(RHI)
 add_subdirectory(RHI/D3D12)
 add_subdirectory(RHI/OpenGL)
 add_subdirectory(Resources)

tests/RHI/CMakeLists.txt

@@ -0,0 +1,43 @@
+cmake_minimum_required(VERSION 3.15)
+
+project(RHIEngineTests)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+get_filename_component(PROJECT_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../.. ABSOLUTE)
+
+find_package(OpenGL REQUIRED)
+
+include_directories(${CMAKE_SOURCE_DIR}/tests/OpenGL/package/include/)
+include_directories(${PROJECT_ROOT_DIR}/engine/include)
+include_directories(${PROJECT_ROOT_DIR}/engine/src)
+
+link_directories(${CMAKE_SOURCE_DIR}/tests/OpenGL/package/lib/)
+
+find_package(GTest REQUIRED)
+
+set(TEST_SOURCES
+    test_factory.cpp
+)
+
+add_executable(rhi_engine_tests ${TEST_SOURCES})
+
+target_link_libraries(rhi_engine_tests PRIVATE
+    opengl32
+    glfw3
+    d3d12
+    dxgi
+    d3dcompiler
+    XCEngine
+    GTest::gtest
+    GTest::gtest_main
+)
+
+target_include_directories(rhi_engine_tests PRIVATE
+    ${PROJECT_ROOT_DIR}/engine/include
+    ${PROJECT_ROOT_DIR}/engine/src
+)
+
+enable_testing()
+add_test(NAME RHIEngineTests COMMAND rhi_engine_tests)

tests/RHI/test_factory.cpp

@@ -0,0 +1,44 @@
+#pragma once
+
+#include <gtest/gtest.h>
+
+#include "XCEngine/RHI/RHIFactory.h"
+#include "XCEngine/RHI/D3D12/D3D12Device.h"
+
+using namespace XCEngine::RHI;
+
+TEST(RHIFactory, CreateD3D12Device_ReturnsValidPointer) {
+    RHIDevice* device = RHIFactory::CreateRHIDevice(RHIType::D3D12);
+    
+    ASSERT_NE(device, nullptr);
+    
+    delete device;
+}
+
+TEST(RHIFactory, CreateD3D12DeviceByName_ReturnsValidPointer) {
+    RHIDevice* device = RHIFactory::CreateRHIDevice("D3D12");
+    
+    ASSERT_NE(device, nullptr);
+    
+    delete device;
+}
+
+TEST(RHIFactory, CreateInvalidDevice_ReturnsNullptr) {
+    RHIDevice* device = RHIFactory::CreateRHIDevice("InvalidAPI");
+    
+    ASSERT_EQ(device, nullptr);
+}
+
+TEST(RHIFactory, CreateInvalidType_ReturnsNullptr) {
+    RHIDevice* device = RHIFactory::CreateRHIDevice(RHIType::Vulkan);
+    
+    ASSERT_EQ(device, nullptr);
+}
+
+TEST(D3D12DeviceCreation, DirectCreation_Success) {
+    D3D12Device* device = new D3D12Device();
+    
+    ASSERT_NE(device, nullptr);
+    
+    delete device;
+}