I have been writing a moderately simple visual compositor for one of my projects. As you may guess, each visual has a redirection bitmap for itself. At some point, I must handle the case in which when a visual needs to be resized. I have a few of approaches to solve the problem but I wonder how Windows handles that.
Does Windows resize the redirection bitmap of a window? I mean, does it reallocate a new bitmap and copy the previous content onto the new one? Or does it allocate a bitmap whose size is equal to the size of the display device(eg. Monitor) and set a clip rectangle to specify where to be copied onto the final desktop bitmap?
