64 lines
2.2 KiB
Markdown
64 lines
2.2 KiB
Markdown
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# D3D12CommandQueue
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**命名空间**: `XCEngine::RHI`
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**类型**: `class`
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**头文件**: `XCEngine/RHI/D3D12/D3D12CommandQueue.h`
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**描述**: DirectX 12 命令队列封装类，负责提交命令列表到 GPU 执行
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## 概述
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D3D12CommandQueue 是 DirectX 12 命令队列的封装类，继承自 RHICommandQueue 接口。它负责将录制好的命令列表提交到 GPU 执行，支持 GPU/CPU 同步操作，如信号、等待等。命令队列是渲染管线的核心组件，所有渲染命令都通过命令队列提交到 GPU。
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## 公共方法
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| 方法 | 描述 |
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|------|------|
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| `D3D12CommandQueue()` | 默认构造函数 |
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| `~D3D12CommandQueue()` | 虚析构函数 |
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| [Initialize](d3d12-command-queue-initialize.md) | 初始化命令队列 |
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| [Shutdown](d3d12-command-queue-shutdown.md) | 关闭命令队列 |
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| [ExecuteCommandLists](d3d12-command-queue-execute-command-lists.md) | 执行命令列表 |
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| [Signal](d3d12-command-queue-signal.md) | 设置围栏信号 |
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| [Wait](d3d12-command-queue-wait.md) | 等待围栏 |
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| [GetCompletedValue](d3d12-command-queue-get-completed-value.md) | 获取已完成值 |
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| [WaitForIdle](d3d12-command-queue-wait-for-idle.md) | 等待空闲 |
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| [GetType](d3d12-command-queue-get-type.md) | 获取队列类型 |
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| [GetTimestampFrequency](d3d12-command-queue-get-timestamp-frequency.md) | 获取时间戳频率 |
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| [GetCommandQueue](d3d12-command-queue-get-command-queue.md) | 获取底层队列指针 |
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| [WaitForPreviousFrame](d3d12-command-queue-wait-for-previous-frame.md) | 等待前一帧完成 |
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## 使用示例
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```cpp
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#include <XCEngine/RHI/D3D12/D3D12CommandQueue.h>
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using namespace XCEngine::RHI;
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// 创建命令队列
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D3D12CommandQueue commandQueue;
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commandQueue.Initialize(device, CommandQueueType::Direct);
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// 执行命令列表
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ID3D12CommandList* lists[] = { commandList->GetCommandList() };
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commandQueue.ExecuteCommandListsInternal(1, lists);
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// 信号同步
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commandQueue.Signal(fence, frameIndex);
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commandQueue.WaitForPreviousFrame();
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// 等待空闲
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commandQueue.WaitForIdle();
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// 关闭
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commandQueue.Shutdown();
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```
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## 相关文档
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- [D3D12 模块概览](d3d12.md) - D3D12 模块总览
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- [D3D12CommandList](d3d12-command-list.md) - 命令列表
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- [D3D12Fence](d3d12-fence.md) - 围栏同步
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