getVideoSurface PixelFormat#colorkey PixelFormat#alpha ¤òÄêµÁ¤¹¤ë¡£
getVideoSurface
PixelFormat#colorkey
PixelFormat#alpha
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ohai/rubysdl,cyndis/rubysdl,cyndis/rubysdl,ohai/rubysdl,cyndis/rubysdl,cyndis/rubysdl,ohai/rubysdl,ohai/rubysdl