fence | 指示 GPU 在执行图形队列处理前等待的 GraphicsFence。 |
stage | 在某些平台中,对于特定的绘制调用,在完成顶点处理和开始像素处理之间存在明显间隙。此参数允许请求的等待在下一个项目顶点或像素处理开始之前进行。如果下一个要提交的项目是计算着色器分发,此参数将被忽略。 |
指示 GPU 等待,直至给定的 GraphicsFence 完成传递。
如果此 CommandBuffer 使用 Graphics.ExecuteCommandBuffer 或 ScriptableRenderContext.ExecuteCommandBuffer 来执行,则图形队列的请求将要等待。
作为参数向此函数提供的 GraphicsFence 必须使用 GraphicsFenceType.AsyncQueueSynchronization 栅栏进行创建。
如果此 CommandBuffer 使用 Graphics.ExecuteCommandBufferAsync 或 ScriptableRenderContext.ExecuteCommandBufferAsyn 来执行,则执行命令缓冲区所在的队列将要等待。
在不支持 GraphicsFences 的平台中,此调用不执行任何操作,请参阅:SystemInfo.supportsGraphicsFence。
此函数会在 CPU 上立即返回。栅栏仅影响 GPU 处理。
另请参阅:Graphics.ExecuteCommandBufferAsync、Graphics.CreateGraphicsFence、ScriptableRenderContext.ExecuteCommandBufferAsync、ScriptableRenderContext.CreateGraphicsFence。
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