Dear All, 牋牋牋牋牋牋 I am pretty new to X development. I am trying to implement rotation and reflection of window using RandR in xf86 video driver for our own chipset. We have our existing xf86 driver but that does not do anything for rotation or reflection. I studied some existing drivers(like the RADEON) one to understand how they are doing it but failed to get the overall idea of how to to do it. So I need some documents or some guidance which says what all things should be done in general to do rotation or reflection in xf86 driver. Currently what I have done is: 1. implemented the shadow buffer related CRTC functions and used the EBI memory (not the graphics card memory) for this. 2. just with this simple change what I see is some rectangular stipples getting drawn in new orientation(though it is not full screen) I know lot of major things to be done but probably I need a list. Can some one help me with this. Thank you, xbaral.