29 lines
700 B
Markdown
29 lines
700 B
Markdown
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# OpenGLSwapChain::GetCurrentBackBuffer
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```cpp
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RHITexture* GetCurrentBackBuffer() override;
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```
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获取当前后台缓冲区纹理对象。
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**返回：** `nullptr`（OpenGL 交换链不支持此方法）
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**线程安全：** ❌
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**注意：**
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- OpenGL 交换链基于 GLFW 窗口，不提供独立的后台缓冲区纹理
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- 该方法继承自 `RHISwapChain` 抽象接口
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- 如需渲染到纹理，请使用 Framebuffer Object (FBO)
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**示例：**
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```cpp
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RHITexture* backBuffer = swapChain->GetCurrentBackBuffer();
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// 返回 nullptr
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```
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## 相关文档
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- [OpenGLSwapChain 总览](swap-chain.md)
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- [GetCurrentBackBufferIndex](get-current-back-buffer-index.md) - 获取当前后台缓冲区索引
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