Double buffer support in Framebuffer?

siqiao chen siqiaochen at
Wed Apr 27 19:24:56 EDT 2011

Hello, Could I ask how do I enable double buffer support in FrameBuffer
I think I could manually increase xres_virtual/yres_virtual to 2 times of
the display size in video driver and swap xoffset/yoffset after VSync.  But
could I know if this is the right way to do double buffering or this
function is already built-in?

 Thank you!

                                                    Philip Chen
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