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[D3D] What is VBLANK

2008-06-09 11:15:01| 分类： 3d | 标签： |举报 |字号大中小订阅

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今天看到这个 IDirect3DDevice9::GetRasterStatus() 函数，里面的参数 D3DRASTER_STATUS 里说到了 BOOL InVBlank; UINT ScanLine; 等咚咚，赶紧 google 了一把，补课之~~

显示器在 current frame 绘制结束到 next frame 开始绘制，会有一段时间空闲，这就是 Vertical Blank。

http://en.wikipedia.org/wiki/Vertical_blank_interrupt
http://en.wikipedia.org/wiki/Vertical_blank

不过 ... 获取这个信息有啥用处呢？krugle.com 上没找到相应的例子，看来 PC 上基本用不上，console game 上呢？

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