90 lines
2.8 KiB
Markdown
90 lines
2.8 KiB
Markdown
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# RHIDevice
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**命名空间**: `XCEngine::RHI`
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**类型**: `class` (abstract)
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**描述**: RHI 渲染设备抽象接口，代表一个图形设备实例。
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## 概述
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`RHIDevice` 是 RHI 模块的核心接口之一，负责创建和管理所有 GPU 资源。每个 RHI 后端（D3D12、OpenGL 等）都需要实现此接口。
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## 公共方法
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### 生命周期
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| 方法 | 描述 |
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|------|------|
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| `virtual bool Initialize(const RHIDeviceDesc& desc)` | 初始化设备 |
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| `virtual void Shutdown()` | 关闭设备，释放所有资源 |
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### 资源创建
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| 方法 | 描述 |
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|------|------|
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| `virtual RHIBuffer* CreateBuffer(const BufferDesc& desc)` | 创建 GPU 缓冲区 |
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| `virtual RHITexture* CreateTexture(const TextureDesc& desc)` | 创建 GPU 纹理 |
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| `virtual RHISwapChain* CreateSwapChain(const SwapChainDesc& desc)` | 创建交换链 |
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| `virtual RHICommandList* CreateCommandList(const CommandListDesc& desc)` | 创建命令列表 |
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| `virtual RHICommandQueue* CreateCommandQueue(const CommandQueueDesc& desc)` | 创建命令队列 |
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| `virtual RHIShader* CompileShader(const ShaderCompileDesc& desc)` | 编译着色器 |
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| `virtual RHIPipelineState* CreatePipelineState(const PipelineStateDesc& desc)` | 创建管线状态对象 |
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| `virtual RHIFence* CreateFence(const FenceDesc& desc)` | 创建同步栅栏 |
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| `virtual RHISampler* CreateSampler(const SamplerDesc& desc)` | 创建采样器 |
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### 设备信息
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| 方法 | 描述 |
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|------|------|
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| `virtual const RHICapabilities& GetCapabilities() const` | 获取设备能力 |
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| `virtual const RHIDeviceInfo& GetDeviceInfo() const` | 获取设备信息 |
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| `virtual void* GetNativeDevice() = 0` | 获取原生设备指针 |
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## 使用示例
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```cpp
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// 创建 D3D12 设备
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RHI::RHIDevice* device = RHI::RHIFactory::CreateRHIDevice(RHI::RHIType::D3D12);
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// 配置设备描述
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RHI::RHIDeviceDesc desc;
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desc.windowHandle = hwnd;
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desc.width = 1280;
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desc.height = 720;
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desc.appName = L"MyApp";
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desc.enableDebugLayer = true;
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// 初始化设备
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if (device->Initialize(desc)) {
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// 获取设备能力
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const RHI::RHICapabilities& caps = device->GetCapabilities();
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if (caps.bSupportsRayTracing) {
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// 设备支持光线追踪
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}
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// 获取设备信息
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const RHI::RHIDeviceInfo& info = device->GetDeviceInfo();
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printf("GPU: %ls\n", info.description.c_str());
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// 创建资源
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RHI::BufferDesc bufferDesc;
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bufferDesc.size = 1024;
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bufferDesc.bufferType = (uint32_t)RHI::BufferType::Vertex;
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RHI::RHIBuffer* buffer = device->CreateBuffer(bufferDesc);
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// ... 使用设备 ...
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// 关闭设备
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device->Shutdown();
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}
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delete device;
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```
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## 相关文档
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- [RHIFactory](./rhi-factory.md) - 设备工厂
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- [RHICapabilities](./rhi-capabilities.md) - 设备能力
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- [RHITypes](./rhi-types.md) - 设备描述结构体
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