From b4be5e338be2301f83f4dfdc0cbb740f0a783464 Mon Sep 17 00:00:00 2001 From: Haihua Hu Date: Thu, 14 Jun 2018 13:54:08 +0800 Subject: [PATCH 1/2] unstable: Add alpha-compositing protocol It's based on the Chromium Wayland protocol of the same name ([1]) and Alexandros's modified version ([2])with a few changes made to the blending_equation enumeration. Add one more blending_equation "src_alpha / src_alpha" [1] https://chromium.googlesource.com/chromium/src/+/master/third_party/wayland-protocols/unstable/alpha-compositing/alpha-compositing-unstable-v1.xml [2] https://lists.freedesktop.org/archives/wayland-devel/2017-August/034741.html Upstream-Status: Inappropriate [i.MX specific] Signed-off-by: Haihua Hu --- Makefile.am | 1 + unstable/alpha-compositing/README | 6 + .../alpha-compositing-unstable-v1.xml | 136 +++++++++++++++++++++ 3 files changed, 143 insertions(+) create mode 100644 unstable/alpha-compositing/README create mode 100644 unstable/alpha-compositing/alpha-compositing-unstable-v1.xml diff --git a/Makefile.am b/Makefile.am index 4b9a901..e6c44ec 100644 --- a/Makefile.am +++ b/Makefile.am @@ -17,6 +17,7 @@ unstable_protocols = \ unstable/keyboard-shortcuts-inhibit/keyboard-shortcuts-inhibit-unstable-v1.xml \ unstable/xdg-output/xdg-output-unstable-v1.xml \ unstable/input-timestamps/input-timestamps-unstable-v1.xml \ + unstable/alpha-compositing/alpha-compositing-unstable-v1.xml \ $(NULL) stable_protocols = \ diff --git a/unstable/alpha-compositing/README b/unstable/alpha-compositing/README new file mode 100644 index 0000000..d874156 --- /dev/null +++ b/unstable/alpha-compositing/README @@ -0,0 +1,6 @@ +Alpha compositing protocol + +Maintainers: +David Reveman +Alexandros Frantzis +Jared Hu diff --git a/unstable/alpha-compositing/alpha-compositing-unstable-v1.xml b/unstable/alpha-compositing/alpha-compositing-unstable-v1.xml new file mode 100644 index 0000000..0844b3f --- /dev/null +++ b/unstable/alpha-compositing/alpha-compositing-unstable-v1.xml @@ -0,0 +1,136 @@ + + + + + Copyright 2016 The Chromium Authors. + Copyright 2017 Collabora Ltd + Copyright 2018 NXP + + Permission is hereby granted, free of charge, to any person obtaining a + copy of this software and associated documentation files (the "Software"), + to deal in the Software without restriction, including without limitation + the rights to use, copy, modify, merge, publish, distribute, sublicense, + and/or sell copies of the Software, and to permit persons to whom the + Software is furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice (including the next + paragraph) shall be included in all copies or substantial portions of the + Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + DEALINGS IN THE SOFTWARE. + + + + This protocol specifies a set of interfaces used to control the alpha + compositing and blending of surface contents. + + Warning! The protocol described in this file is experimental and backward + incompatible changes may be made. Backward compatible changes may be added + together with the corresponding interface version bump. Backward + incompatible changes are done by bumping the version number in the protocol + and interface names and resetting the interface version. Once the protocol + is to be declared stable, the 'z' prefix and the version number in the + protocol and interface names are removed and the interface version number is + reset. + + + + + The global interface exposing compositing and blending capabilities is + used to instantiate an interface extension for a wl_surface object. + This extended interface will then allow the client to specify the + blending equation and alpha value used for compositing the wl_surface. + + + + + Informs the server that the client will not be using this + protocol object anymore. This does not affect any other objects, + blending objects included. + + + + + + + + + + Instantiate an interface extension for the given wl_surface to + provide surface blending. If the given wl_surface already has + a blending object associated, the blending_exists protocol error + is raised. + + + + + + + + + + An additional interface to a wl_surface object, which allows the + client to specify the blending equation used for compositing and + an alpha value applied to the whole surface. + + When the blending object is created its blending equation is + 'none' and its alpha is 1.0, i.e., it's inactive by default. Clients + can activate it by setting the blending equation and alpha value. + + If the wl_surface associated with the blending object is destroyed, + the blending object becomes inert. + + If the blending object is destroyed, the blending state is removed + from the wl_surface. The change will be applied on the next + wl_surface.commit. + + + + + The associated wl_surface's blending state is removed. + The change is applied on the next wl_surface.commit. + + + + + + Blending equations that can be used when compositing a surface. + + + + + + + + + + + Set the blending equation for compositing the wl_surface. + + The blending equation state is double-buffered state, + and will be applied on the next wl_surface.commit. + + + + + + + Set the alpha value applied to the whole surface for compositing. + + The alpha value state is double-buffered state, + and will be applied on the next wl_surface.commit. + + + + + + \ No newline at end of file -- 2.7.4