Hi, Daniel! I used my application also Pc and I would like to be as compatible as possible. How could create the device framebuffer from overlay layer using libdrm?
Thanks! 2015-09-04 14:52 GMT+02:00 Daniel Vetter <daniel at ffwll.ch>: > On Fri, Sep 04, 2015 at 11:59:58AM +0200, Alex Vazquez wrote: > > Hi,all! > > > > I'm using atmel-hlcdc driver to control a LCD panel and an application > uses > > the /dev/fb0 framebuffer created by the driver. The display works fine > > except that the panel's standard orientation is landscape mode (480x275) > > and I need to use it in portrait mode (275x480). > > > > I know that the driver allow rotation but is only for the overlays > layers, > > and not the baselayer. > > > > I have tested with modetest and i can do what i want. > > > > I want to know if is posible create a device framebuffer from overlay > layer > > use libdrm (e.g. /dev/fb1). > > Legacy fbdev support really is only for debugging and stuff like that, if > you have a kms driver I highly recommend that you just use the dumb buffer > api and assign them to overlays like modetest. Ofc it would be technically > possible to create more legacy framebuffer devices, but I don't think > that's something which would be received with enthusiasm by upstream. > -Daniel > -- > Daniel Vetter > Software Engineer, Intel Corporation > http://blog.ffwll.ch > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20150906/6c47f486/attachment.html>
