Hi Vandana, On 23 December 2015 at 03:20, Kannan, Vandana <vandana.kannan@xxxxxxxxx> wrote: > How does VT switch work in case of rotation, setting different pixel format, > etc? Pixel format is a property of the framebuffer, not a per-plane property, so is unaffected. Rotation is generic, so there is specific code to handle it for fbdev etc. But the real problem is that this is an Intel-specific property, and in order to get correct results, userspace must know about these specific properties in order to unset them. This means that you can't run generic userspace, and you can't run old userspace which predates these properties either. This seems like a total non-starter to me. It would be much cleaner if there was a way to attach the render compression property to the framebuffer, e.g. by using the format modifiers which were specifically introduced to deal with compression and tiling. Cheers, Daniel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
