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增加资料. 

Signed-off-by: rick.chan <chenyang@autoai.com>
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rick.chan 2020-11-11 19:18:47 +08:00
parent d1220f06ff
commit e0694e0302
2 changed files with 16 additions and 1 deletions
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2
Documents/Translate/ReferenceManual/Renesas/SOC/R-Car_Gen3/32_Video_Signal_Processor(VSP2).md
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@ -54,4 +54,4 @@ VSP2 提供了 Display List 功能。使用 Display List 功能的情况下，VS
**图 32.64 Comparison of VSP2 Operation between Normal Register Settings and Display Lists.** **图 32.64 Comparison of VSP2 Operation between Normal Register Settings and Display Lists.**
如图 32.64(A) 所示， 如图 32.64(A) 所示，普通寄存器操作的情况下，在 VSP2 处理每一帧之前都需要对相关寄存器进行设置。当 VSP2 处理结束后，产生一次 Frame End Interrupt（VI6_WPFn_IRQ_STA.FRE）。该方法在连续两个帧处理之间需要有 CPU 的参与来完成寄存器设定和中断处理，因此需要一些额外的时间开销。与此相反的是，在图 32.64(B) 和 32.64(C) 中使用 Display List 的情况下，VSP2 自动从外部存储器中下载寄存器设定，帧与帧之间的寄存器设定不再需要 CPU 参与。

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Software/Applications/Weston/Layer_与_Surface_管理.md Normal file
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# Layer 与 Surface 管理
LayerManagerControl create layer 1000 1920 1080
LayerManagerControl set layer 1000 source region 0 0 1920 1080
LayerManagerControl set layer 1000 destination region 0 0 1920 1080
LayerManagerControl set layer 1000 visibility 1
LayerManagerControl set screen 0 render order 1000
LayerManagerControl set surface 2000 source region 0 0 1920 1080
LayerManagerControl set surface 2000 destination region 0 0 1920 1080
LayerManagerControl set layer 1000 render order 2000
LayerManagerControl set surface 2000 visibility 1
LayerManagerControl get layers
LayerManagerControl get surfaces