The RandR protocol spec has several requests in support of user-defined
modes, but the implementation was stubbed out inside the X server. Fill out
the DIX portion and start on the xf86 DDX portion. It might be necessary to
add more code to the DDX to insert the user-defined modes into the output
mode list.
RandR 1.0 sizeID must be computed the same way every time, so when reporting
it in the ScreenChangeNotify event, just construct the usual 1.0 data block
and use that.
subpixel geometry information can be computed by looking at the connected
outputs and finding any with subpixel geometry and using one of those for
the global screen subpixel geometry. This might be improved by reporting
None if more than one screen has information and they conflict.
The RRScreenSizeSetRange function is used externally for 1.2 API drivers,
but can also be used in the 1.0 compatibility code. This also ensures that
the right changed bits are set so that clients are correctly notified when
the range changes.
RRGetInfo can return an error, use that to return BadAlloc to clients
instead of blindly going on with various requests.
Events and internal data structures need to be updated whenever the physical
or pixel size of the screen changes. The code was ignoring the physical
size, so changing only that would not be registered anywhere.
Mode lines reflect the monitor mode, not the projected size into the frame
buffer. Flip width/height around so that the dimensions are oriented
correctly.
RandR 1.0 refresh rates were scrambled when working with a 1.2 driver that
returned sizes in a mixed order. SetScreenConfig was treating RRCrtcSet as
returning an RandR status instead of a Bool.
xf86 drivers need to create RandR object in the PreInit stage,
before the ScreenRec is allocated. Changing the RandR DIX code
to permit this required the addition of functions that later associate the
objects with the related screen.
An additional change is that modes are now global, and no longer associated
with a specific screen. This change actually makes mode management cleaner
as there is no more per-screen list of modes to deal with.
This changes the RandR 1.2 ABI/API for drivers.
Add function to keep pointer within valid crtc areas.
Finish event delivery and swapping code.
Separate configuration from layout changes to send correct events.
Output options and mode origins both affected driver ABI. memmove mistakes
were causing 'Freeing resource which isn't there' messages.
Prune unused non-user defined modes from available list now.
Provide a Xinerama implementation when DIX version isn't enabled. This
version exposes each crtc as a separate 'screen' and reports the size of
that patch. The extension also sends ConfigureNotify events to the root
window whenever crtcs change so that applications will re-fetch xinerama
information. This actually works for metacity.
RandR is getting too big to live in one file; split into one file per object
type (crtc, mode, screen), leaving the rest of the code in randr.c.
Code is slowly approaching the point where it will drop-in as a replacement
for the old 1.0 implementation.
