When building the new mode setting code out-of-tree against an older server,
don't use xf86RandR12TellChanged as that is a RandR 1.2 specific interface.
Option "Enable" "True" will force the server to enable an output at startup
time, even if the output is not connected. This also causes the default
modes to be added for this output, allowing even sync ranges to be used to
pick out standard modes.
By default, use the screen monitor section for output 0, however, a driver
can change which output gets the screen monitor by calling
xf86OutputUseScreenMonitor.
xf86SetSingleMode tries to resize all crtcs to match the selected mode. When
a CRTC has no matching mode, it now disables the CRTC (instead of crashing).
Also, poke the RandR extension when xf86SetSingleMode is done so that
appropriate events can be delivered, and so that future RandR queries return
correct information.
Yes, two changes in one commit. Sorry 'bout that.
The first change ensures that when pending property values have been
changed, a mode set to the current mode will actually do something, rather
than being identified as a no-op. In addition, the driver no longer needs to
manage the migration of pending to current values, that is handled both
within the xf86 mode setting code (to deal with non-RandR changes) as well
as within the RandR extension itself.
The second change eliminates the two-call Create/AttachScreen stuff that was
done in a failed attempt to create RandR resources before the screen
structures were allocated. Merging these back into the Create function is
cleaner.
desiredX and desiredY were not recorded during xf86InitialConfiguration.
desiredX, desiredY and desiredRotation were not recorded during
xf86SetSingleMode.
Pending Properties take effect when the driver says they do, so provide an
API to tell DIX when a property effect is made. Also, allow driver
to reject property values in RRChangeOutputProperty.
Previous version used monitor identifiers if present, otherwise output
names. That caused existing working configurations to break when additional
information was added to the configuration file.
xf86SetDesiredModes applies the desired modes to each crtc (as selected by
xf86InitialConfiguration initially and modified by successful mode settings
afterwards). For crtcs without a desired mode, pScrn->currentMode is used to
select something workable.
This function applies a single mode to the screen (as from RandR 1.1,
XFree86-VidModeExtension or XFree86-DGA) using a policy that selects one
output to reconfigure to the requested mode and then makes all other outputs
fit within that size.
canGrow indicates to the DDX that the driver can enlarge the desktop via the
xf86_config->funcs->resize hook. If so, xf86InitialConfiguration will set
virtual[XY] to match the configuration it chooses and will leave the crtc config
size ranges alone. If FALSE, it will bloat the screen to fit the largest probed
mode and also set the crtc config max size to limit the desktop to the initial
virtual[XY] size.
This hook is called when the DDX needs to resize the screen. The driver is
responsible for changing virtualX and virtualY, along with any other related
screen properties (devPrivate.ptr, devKind, displayWidth, etc.).
Use the size range from the crtc config instead of randrp->virtual[XY] when
reporting the min and max screen sizes to the DDX.
in xf86CrtcSetMode, scrn->pScreen will be NULL during server startup time,
so don't try to set the subpixel order. subpixel order will be set in the
randr initialization anyways.
New modes header files required a few minor changes to be used by external
drivers, the most notable of which is the publication of the config file
parser header files.
Add monitor "Rotate" option taking one of "normal", "left", "inverted" or
"right". However, because initial mode selection is made before the screen
is completely initialized, we cannot create the shadow pixmap object at this
point. Pend the shadow pixmap creation until the block handler.
Note that this code is not completely functional yet.
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.
This code comes from the intel driver, so there's no history in this tree.
As the crtc/output-based mode selection code uses ddc, the ddc and i2c
modules have been merged into the server. Attempts to load them are safely
ignored now.
