Commit Graph

183 Commits

Author SHA1 Message Date
Pekka Paalanen
eaf406190a protocol: remove scaler.xml
The stable version of the scaling and cropping extension is found in
wayland-protocols as viewporter.xml.

Remove scaler.xml as nothing uses it.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
2016-06-09 11:07:22 +03:00
Yong Bakos
2aa6bd7c97 ivi-application: Hyphenate compound adjective surface-local
See https://lists.freedesktop.org/archives/wayland-devel/2016-April/028249.html.

Signed-off-by: Yong Bakos <ybakos@humanoriented.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
2016-04-29 16:33:11 -07:00
Pekka Paalanen
b00c79b587 protocol: migrate to stable presentation-time.xml
Remove the unstable presentation_timing.xml file, and use
presentation-time.xml from wayland-protocols instead to generate all the
Presentation extension bindings.

The following renames are done according to the XML changes:
- generated header includes
- enum constants and macros prefixed with WP_
- interface symbol names prefixed with wp_
- protocol API calls prefixed with wp_

Clients use wp_presentation_interface.name rather than hardcoding the
global interface name: presentation-shm, weston-info, presentation-test.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
[Pekka: updated wayland-protocols dependency to 1.2]
2016-03-07 13:29:27 +02:00
Pekka Paalanen
870fadced3 protocol: fix DTD warning in weston-desktop-shell
The DTD requires elements in certain order, scanner itself doesn't.
Anyway, fix the warning with a simple reordering to match how all other
protocols are written.

Fixes:
protocol:107: element request: validity error : Element request content
does not follow the DTD, expecting (description? , arg*), got (arg
description )

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-19 15:58:44 +02:00
Jonas Ådahl
5b0b770c2d Remove workspaces protocol
It doesn't fill a useful function and is not intended to be continued.
If there is need for workspace manipulation from clients a protocol
based on those future needs need to be properly designed.
workspaces.xml is probably not very relevant since it did the bare
minimum.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-19 15:11:08 +02:00
Jonas Ådahl
cf1efd2ab7 Rename screenshooter protocol to weston_screenshooter
Due to the effort of moving a way from non-prefixed protocols, rename
the weston specific screenshooter protocol to weston_screenshooter.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-19 15:07:24 +02:00
Jonas Ådahl
6d6fb61a32 desktop-shell: Rename protocol weston_desktop_shell
In the effort of going away from generic names of protocols only
relevant for weston, rename the weston desktop shell
weston_desktop_shell.

This also resets the version to 1, as there will be no prior versions
to weston_desktop_shell.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-19 14:58:58 +02:00
Jonas Ådahl
2a229338a5 Use xdg_shell protocol from wayland-protocols
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Acked-by: Jasper St. Pierre <jstpierre@mecheye.net>
2015-11-19 14:49:52 +02:00
Jonas Ådahl
b57f472c84 Use input method protocol from wayland-protocols
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Jan Arne Petersen <janarne@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-19 13:17:59 +02:00
Jonas Ådahl
3bcba347a2 Use text input protocol from wayland-protocols
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Jan Arne Petersen <janarne@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-19 13:07:10 +02:00
Jonas Ådahl
57e48f023c Use linux-dmabuf protocol from wayland-protocols
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-19 12:58:58 +02:00
Jonas Ådahl
496adb3bb3 Use fullscreen-shell.xml from wayland-protocols
Use the fullscreen-shell protocol XML from the wayland-protocols
installation, and remove the one we provide ourself.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-11-19 12:50:56 +02:00
Derek Foreman
dcba1a10d3 xdg-shell: Clarify ack_configure behaviour
Right now many toolkits (toytoolkit, gtk+ and EFL) will send an
ack_configure request immediately in response to a configure event,
even if they're not immediately committing the surface at that time.

This leads to a situation where multiple configures receive ack_configure
before any commit happens.

There's really no reason for that sequence of events to bother a compositor,
so this just clarifies the language to make it ok.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
2015-09-30 13:06:44 -07:00
Pekka Paalanen
23ab7159d2 protocol: add linux_dmabuf extension (v3)
An experimental (hence the 'z' prefix) linux_dmabuf Wayland protocol
extension for creating dmabuf-based wl_buffers in a generic manner.

This does not include proper dmabuf metadata negotiation because
there is no way to communicate all dmabuf constraints from the
compositor to a client before-hand. The client has to create a
wl_buffer wrapping one or more dmabuf buffers and then listen at
the feedback object returned to know if the operation was successful.

RFCv1 changes (after a first draft without code):
- some renames of interfaces and argument, no semantic changes
- added destructor protocol to dmabuf_batch
- added feedback interface for buffer creation

v2 changes:
- use drm_fourcc.h as authoritative source for format codes
- add support for the 64-bit layout qualifier and y-inverted dmabufs
- simplify the 'add' request (no need to preserve fd numerical id)
- add explicit plane index in the 'add' request
- integrate the 'feedback' object events to the batch interface
- rename 'create_buffer' to 'create' and move it into the batch interface
- add requirements needed from the graphics stack and clients
- improve existing errors and add batch error codes
- removed error codes from the global interface
- improve documentation for arguments, enums, etc.
- rename dmabuf_batch to zlinux_buffer_params
- The y-inverted property makes more sense as a whole buffer property.
  Y-flipping individual planes of the same buffer object is hardly useful.
  The y-invert is also converted into a flag, so we may add more flags
  later.
- add flags for interlaced buffer content

v3 changes:
- Apply Daniel Vetter's comments about wording on coherency.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-08-14 15:49:53 +03:00
Christopher Michael
a820b4d635 Documentation for the prepare_lock_surface event description, is incorrect
Documentation for the prepare_lock_surface event description is
incorrect. The summary says "Tell the client..." however the full-text
description says "tell the shell..."

Signed-off-by: Chris Michael <cp.michael@samsung.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

[This time include the actual changes.]
2015-07-14 01:23:28 -07:00
Jonas Ådahl
3559f892e4 xdg-shell: Further clarify xdg_surface.resize semantics
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-06-26 17:23:15 +08:00
Jonas Ådahl
b317beb5e6 xdg-shell: Further clarify xdg_surface.move semantics
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-06-26 17:23:12 +08:00
Bryce Harrington
b7e07846bd protocol/text: Update boilerplate from MIT X11 license to MIT Expat license
Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
2015-06-15 15:27:27 -07:00
Bryce Harrington
a49caf9d8e protocol: Update boilerplate from MIT X11 license to MIT Expat license 2015-06-15 13:04:18 -07:00
Bryce Harrington
a419d412ed protocol: whitespace cleanup 2015-06-15 13:04:18 -07:00
Jonas Ådahl
7ef8c9144d xdg-shell: Document the set_maximized and unsetmaximized requests
This patch changes the semantics (compared to the previous version of
this patch) of maximizing/unmaximizing an already maximized/unmaximized
surface to always result in a configure event. Doing it this way would
be more consistent with how the compositor works regarding other
configure events i.e. send many, letting the client ignore when needed
(for example during resize).

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-21 19:07:35 -07:00
Jonas Ådahl
7a9bb0ea00 xdg-shell: Document responsibilities regarding ping events
Document that a compositor is free to ping in any way it wants, but a
client must always respond to any xdg_shell object it created.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
2015-05-21 19:05:41 -07:00
Jonas Ådahl
5b77199cc1 xdg-shell: Document error conditions when popup and surface getters
Document that a wl_surface can only be assigned either a xdg_popup or
xdg_surface once and that if the client still stries to do that an error
is raised.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-21 19:01:45 -07:00
Jonas Ådahl
ca13f7ed8f xdg-shell: Clarify the meaning of app ID and give example
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
2015-05-21 18:56:26 -07:00
Bryce Harrington
83d61b6dfb protocol: Add test screenshot capability
This adds a capture_screenshot request which returns an image of the
screen in the client-supplied wl_buffer for the given display output.

A 'done' event is used to indicate when screenshotting has finished and
the wl_buffer is ready to be read.

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-By: Derek Foreman <derekf@osg.samsung.com>
2015-05-21 15:05:53 -07:00
Jonas Ådahl
e4df9eea26 protocol: Improve formatting of input method and text protocols
To make it more readable, add an empty line between each request and
event.

Also comes with a bonus indentation fix.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
2015-05-12 12:03:55 +08:00
Derek Foreman
0f29923e30 text-input: Replace model with input
commit 78d00e45cc renamed text_model to text_input

This cleans up remaining uses of the word "model"

Reviewed-by: Jan Arne Petersen <janarne@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
2015-05-08 15:25:40 -07:00
Jonas Ådahl
f1bb57dd31 xdg-shell: Specify fullscreen size-mismatch handling
We cannot rely on the client to provide a surface filling the output so
we must specify what happens with the outputs area that is not covered
completely.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-05 14:28:46 +08:00
Jonas Ådahl
dde4955d4c xdg-shell: Specify the meaning of 0x0 window geometry in configure
Some times the compositor needs to send a configure request but without
having any clue about what size the surface should have. Examples
include unmaximizing a surface that was mapped as maximized, or an
initial state which doesn't have any size expectations.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-05 14:18:13 +08:00
Jonas Ådahl
7d1ad1122b xdg-shell: Some xdg_popup clarifications
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-05 14:18:05 +08:00
Jonas Ådahl
6ce76f00de xdg-shell: Some minor clarifications
Mention set_window_geometry in configure documentation.

Add a strategic "For instance" to clarify what is just an example.

Clarify that the arguments of set_window_geometry are in the surface
local coordinate space.

Point out that the client needs to destroy a dismissed popup.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-05 14:17:56 +08:00
Jonas Ådahl
a46cf2862f xdg-shell: Fix a couple of typos
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
2015-05-05 14:17:45 +08:00
Jonas Ådahl
56c2c35e2e xdg-shell: Document that xdg_surface.set_window_geometry needs a commit
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-05 14:17:36 +08:00
Jonas Ådahl
cd94a46b97 xdg-shell: Require a buffer and a wl_surface.commit for mapping a window
Require the client to have attached (either previously committed, or
newly) a buffer to the corresponding wl_surface, and that the window
will not be potentially mapped until calling wl_surface.commit after
having created the window. This is required to make valid double
buffered xdg_surface state possible when creating a window.

Currently there is no double buffered state in xdg_popup, but it should
behave the same as xdg_surface, and for making it future proof in case
we want to add double buffered state to xdg_popup.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-05 14:17:25 +08:00
Jonas Ådahl
ee45a55dea xdg-shell: Move xdg_shell.get_xdg_popup errors to xdg_shell
They are errors that may be as a result of calling get_xdg_popup on an
xdg_shell, not a result of calling a request on xdg_popup.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-05 14:17:11 +08:00
Jonas Ådahl
49d77d20ae xdg-shell: Require proper object tree destruction
Require all child objects to be destroyed before the parent. In other
words, all popups and surfaces created by one xdg_shell instance needs
to be destroyed before the xdg_shell object, otherwise a protocol error
is raised.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-05-05 14:17:01 +08:00
Pekka Paalanen
f5b74f7ded tests: ivi_layout test infrastructure
Testing the ivi_layout API requires two things:
- the tests must be written as a controller module to access the API
- the tests need a helper client to create some objects that can then be
  managed via the API

This patch adds all the infrastructure and two different kinds of
example tests.

Internal ivi-shell (ivi_layout) API tests are listed as ivi-*.la files
in TESTS in Makefile.am. Weston-tests-env detects these, and runs Weston
with ivi-shell, and loads the given module as a controller module, not
as a normal plugin.

The test controller module ivi-*.la will launch a helper client. For
ivi-layout-test.la the helper client is ivi-layout.ivi.

The helper client uses the weston-test-runner framework to fork and exec
each TEST with a fresh connection to the compositor.

The actual test is triggered by the weston_test_runner protocol
interface, a new addition to weston-test.xml. The helper client uses
weston_test_runner to trigger a test, and the server side of the
interface is implemented by the test controller module
(ivi-layout-test.la).

The server side of weston_test_runner uses the same trick as
weston-test-runner.h to gather a list of defined tests. A test is
defined with the RUNNER_TEST macro.

If a test defined by RUNNER_TEST succeeds, an event is sent to the
helper client that it can continue (or exit). If a test fails, a fatal
protocol error is sent to the helper client.

Once the helper client has iterated over all of its tests, it signals
the batch success/failure via process exit code. That is cought in the
test controller module, and forwarded as Weston's exit code.

In summary: each ivi_layout test is a combination of a client side
helper/setup and server side actual tests.

v2: Load weston-test.so, because create_client() needs it.

v3: add a comment about IVI_TEST_SURFACE_ID_BASE.

v4: Rebased to upstream weston-tests-env changes.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com> (v2)
2015-04-09 09:27:05 +03:00
Marek Chalupa
c8daf77f91 weston-test: add device_{release/add} into protocol
This request simulates device creation/destruction from evdev (libinput)

v2: added support for touch. Touch is not supported yet,
    but better be prepared

Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-03-31 10:12:39 +03:00
Bryce Harrington
a86c3ee697 Spellcheck fixes
./ivi-shell/README:19: protocal  ==> protocol
./src/compositor.h:596: seperate  ==> separate
./src/version.h.in:33: actualy  ==> actually
./src/cms-helper.h:44: embeded  ==> embedded
./protocol/fullscreen-shell.xml:65: seperate  ==> separate
./protocol/xdg-shell.xml:150: auxilliary  ==> auxiliary
./clients/window.c:1035: preferrably  ==> preferably

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-03-19 17:02:08 +02:00
Jasper St. Pierre
5ba1e1d137 xdg-shell: Bump unstable version
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-02-27 14:59:43 +02:00
Jasper St. Pierre
c7384a0c58 xdg-shell: Rewrite documentation
This rewrites basically all of the text inside xdg-shell to be up to
date, clearer, and rid of wl_shell and X11 terminology.

[jadahl: Added paragraph about popup surface mapping order.]
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-02-27 14:59:34 +02:00
Jasper St. Pierre
084aa0b6f6 xdg-shell: Add a simple destructor request
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-02-27 14:59:23 +02:00
Jonas Ådahl
24185e2561 xdg-shell: Add invalid_parent error to xdg_popup
Send an invalid_parent error when the client tries to create a popup
with a paren that is neither a xdg_surface nor a xdg_popup.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-02-27 14:59:18 +02:00
Jasper St. Pierre
da6ecd0cc5 xdg-shell: Send an error when the client uses the not-topmost popup
Either in destroy or get_xdg_popup.

[jadahl: Verify that the new popup is the top most when mapping instead
of creating. Some renaming.]

Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-02-27 14:59:11 +02:00
Jasper St. Pierre
14f330c619 xdg-shell: Remove the flags from get_xdg_popup
There haven't been any ideas for flags, so we don't need a useless,
unused parameter hanging around. Any future ideas should be done with a
new request entirely.

Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-02-27 14:59:05 +02:00
Jasper St. Pierre
ecf2a0f1ca xdg-shell: Remove the serial from popup_done
It doesn't serve any purpose, as it's a serial that the client gave to
the server when starting the popup, which the client already has.

Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-02-27 14:58:57 +02:00
Jasper St. Pierre
66bc949b72 xdg-shell: Take a xdg_surface as the parent surface
There is no other valid surface that we should be using here.

Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2015-02-27 14:58:35 +02:00
Derek Foreman
f6a65928a8 tests: Rename wayland-test to weston-test
wayland-test isn't and will never be wayland protocol, it's weston internal.

Renamed wayland-test to weston-test, and wl_test to weston_test.

Also added a Big Fat Warning to the description of weston_test to try to
keep people from thinking it's a good idea to use some of these functions
outside of testing.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Acked-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
2015-02-24 11:26:29 -08:00
Derek Foreman
553895eb99 text: Fix typo
Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
2015-01-20 18:30:15 -08:00
Pekka Paalanen
0de22a38e6 protocol: add Presentation feedback flags
Add the missing feedback flags to the Presentation extension protocol
specification.

These flags are slightly different from the previous RFCv3.1 definition:
http://lists.freedesktop.org/archives/wayland-devel/2014-March/013598.html

Now, all compositors are safe to use 0 as the flags if they don't bother
setting them properly. 0 is the "worst case" with the least guarantees.

The meaning of ZERO_COPY is not exactly the opposite of the old COPY
flag. ZERO_COPY is more strict, but applies only to that one surface.
Therefore it can be used to verify a zero-copy video playback pipeline,
also to a hardware overlay.

There is no longer a flag to clearly indicate if the final presentation
was done by a copy or a page flip. ZERO_COPY forbids the copy, but VSYNC
alone does allow copy in case it cannot tear.  It is possible to have
first a compositing pass, and then another copy into the frontbuffer,
and still set VSYNC if it cannot tear.  Usually "cannot tear" is too
hard to guarantee with a copy, so it often implies a page flip.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Tested-by: Mario Kleiner <mario.kleiner.de@gmail.com>
2015-01-20 17:12:56 -08:00