DirectX Note(3)

Q1: DirectDraw是什么?

A: DirectDraw是DirectX API中显示部分的组成部分之一

 

Q2:DirectDraw有哪些功能?

A: 位块传送(Bit-block transfers)

    交换链(Page Flipping and Multiple back buffers)

   层叠(overlay, which is placing one image surface over another on the video display)

   alpha混合(Alpha source over destination blending, which is blending two surfaces using the source alpha image component)

   YUV与其他色彩空间转换(Video YUV pixel formats and color conversion)

    直接访问帧内存空间(Direct video access to the frame buffer)

 

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