backend: Add a winit backend for testing

This commit is contained in:
Victoria Brekenfeld 2022-01-18 19:42:04 +01:00
parent 370c825c8e
commit c46f327384
5 changed files with 853 additions and 17 deletions

610
Cargo.lock generated
View file

@ -105,7 +105,7 @@ checksum = "321629d8ba6513061f26707241fa9bc89524ff1cd7a915a97ef0c62c666ce1b6"
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name = "wasm-bindgen"
version = "0.2.78"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "632f73e236b219150ea279196e54e610f5dbafa5d61786303d4da54f84e47fce"
dependencies = [
"cfg-if 1.0.0",
"wasm-bindgen-macro",
]
[[package]]
name = "wasm-bindgen-backend"
version = "0.2.78"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a317bf8f9fba2476b4b2c85ef4c4af8ff39c3c7f0cdfeed4f82c34a880aa837b"
dependencies = [
"bumpalo",
"lazy_static",
"log",
"proc-macro2",
"quote",
"syn",
"wasm-bindgen-shared",
]
[[package]]
name = "wasm-bindgen-macro"
version = "0.2.78"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d56146e7c495528bf6587663bea13a8eb588d39b36b679d83972e1a2dbbdacf9"
dependencies = [
"quote",
"wasm-bindgen-macro-support",
]
[[package]]
name = "wasm-bindgen-macro-support"
version = "0.2.78"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7803e0eea25835f8abdc585cd3021b3deb11543c6fe226dcd30b228857c5c5ab"
dependencies = [
"proc-macro2",
"quote",
"syn",
"wasm-bindgen-backend",
"wasm-bindgen-shared",
]
[[package]]
name = "wasm-bindgen-shared"
version = "0.2.78"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0237232789cf037d5480773fe568aac745bfe2afbc11a863e97901780a6b47cc"
[[package]]
name = "wayland-client"
version = "0.29.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "91223460e73257f697d9e23d401279123d36039a3f7a449e983f123292d4458f"
dependencies = [
"bitflags",
"downcast-rs",
"libc",
"nix",
"scoped-tls",
"wayland-commons",
"wayland-scanner",
"wayland-sys",
]
[[package]]
name = "wayland-commons"
version = "0.29.4"
@ -914,6 +1416,27 @@ dependencies = [
"wayland-sys",
]
[[package]]
name = "wayland-cursor"
version = "0.29.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c52758f13d5e7861fc83d942d3d99bf270c83269575e52ac29e5b73cb956a6bd"
dependencies = [
"nix",
"wayland-client",
"xcursor",
]
[[package]]
name = "wayland-egl"
version = "0.29.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "83281d69ee162b59031c666385e93bde4039ec553b90c4191cdb128ceea29a3a"
dependencies = [
"wayland-client",
"wayland-sys",
]
[[package]]
name = "wayland-protocols"
version = "0.29.4"
@ -921,6 +1444,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "60147ae23303402e41fe034f74fb2c35ad0780ee88a1c40ac09a3be1e7465741"
dependencies = [
"bitflags",
"wayland-client",
"wayland-commons",
"wayland-scanner",
"wayland-server",
@ -962,11 +1486,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d9341df79a8975679188e37dab3889bfa57c44ac2cb6da166f519a81cbe452d4"
dependencies = [
"dlib",
"lazy_static",
"libc",
"memoffset",
"pkg-config",
]
[[package]]
name = "web-sys"
version = "0.3.55"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "38eb105f1c59d9eaa6b5cdc92b859d85b926e82cb2e0945cd0c9259faa6fe9fb"
dependencies = [
"js-sys",
"wasm-bindgen",
]
[[package]]
name = "winapi"
version = "0.3.9"
@ -998,6 +1533,50 @@ version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
[[package]]
name = "winit"
version = "0.26.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b43cc931d58b99461188607efd7acb2a093e65fc621f54cad78517a6063e73a"
dependencies = [
"bitflags",
"cocoa",
"core-foundation 0.9.2",
"core-graphics 0.22.3",
"core-video-sys",
"dispatch",
"instant",
"lazy_static",
"libc",
"log",
"mio",
"ndk",
"ndk-glue",
"ndk-sys",
"objc",
"parking_lot",
"percent-encoding",
"raw-window-handle",
"smithay-client-toolkit",
"wasm-bindgen",
"wayland-client",
"wayland-protocols",
"web-sys",
"winapi",
"x11-dl",
]
[[package]]
name = "x11-dl"
version = "2.19.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ea26926b4ce81a6f5d9d0f3a0bc401e5a37c6ae14a1bfaa8ff6099ca80038c59"
dependencies = [
"lazy_static",
"libc",
"pkg-config",
]
[[package]]
name = "x11rb"
version = "0.9.0"
@ -1010,6 +1589,15 @@ dependencies = [
"winapi-wsapoll",
]
[[package]]
name = "xcursor"
version = "0.3.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "463705a63313cd4301184381c5e8042f0a7e9b4bb63653f216311d4ae74690b7"
dependencies = [
"nom",
]
[[package]]
name = "xkbcommon"
version = "0.4.0"

View file

@ -20,7 +20,7 @@ version = "0.3"
git = "https://github.com/Smithay/smithay.git"
rev = "92d04ba8"
default-features = false
features = ["backend_x11", "backend_egl", "desktop", "use_system_lib", "renderer_gl", "wayland_frontend", "slog-stdlog"]
features = ["backend_x11", "backend_egl", "backend_winit", "desktop", "use_system_lib", "renderer_gl", "wayland_frontend", "slog-stdlog"]
[dependencies.smithay-egui]
git = "https://github.com/Smithay/smithay-egui.git"

View file

@ -5,14 +5,27 @@ use anyhow::Result;
use smithay::reexports::calloop::EventLoop;
pub mod x11;
pub mod winit;
// TODO
// pub mod wayland; // tbd in smithay
// pub mod udev;
pub fn init_backend_auto(event_loop: &mut EventLoop<State>, state: &mut State) -> Result<()> {
if std::env::var_os("DISPLAY").is_some() {
x11::init_backend(event_loop, state)
} else {
unimplemented!("Currently this runs only nested")
match std::env::var("COSMIC_BACKEND") {
Ok(x) if x == "x11" => x11::init_backend(event_loop, state),
Ok(x) if x == "winit" => winit::init_backend(event_loop, state),
Ok(_) => unimplemented!("There is no backend with this identifier"),
Err(_) => if std::env::var_os("DISPLAY").is_some() || std::env::var_os("WAYLAND_DISPLAY").is_some() {
match x11::init_backend(event_loop, state) {
Ok(_) => Ok(()),
Err(err) => {
slog_scope::warn!("X11 Backend failed with error: {}", err);
slog_scope::info!("Falling back to winit backend.");
winit::init_backend(event_loop, state)
}
}
} else {
unimplemented!("Currently this runs only nested")
}
}
}

224
src/backend/winit.rs Normal file
View file

@ -0,0 +1,224 @@
// SPDX-License-Identifier: GPL-3.0-only
use crate::state::Common;
use crate::{
input::{set_active_output, Devices},
state::{BackendData, State},
};
use anyhow::{Context, Result};
use smithay::{
backend::{
renderer::{ImportDma, ImportEgl},
winit::{self, WinitGraphicsBackend, WinitEvent, WinitVirtualDevice},
},
desktop::layer_map_for_output,
reexports::{
calloop::{ping, EventLoop},
wayland_server::{
protocol::wl_output::{Subpixel, Transform},
Display,
},
},
wayland::{
dmabuf::init_dmabuf_global,
output::{Mode, Output, PhysicalProperties},
},
};
use std::{
cell::RefCell,
rc::Rc,
};
#[cfg(feature = "debug")]
use smithay::backend::renderer::gles2::Gles2Renderer;
#[cfg(feature = "debug")]
use crate::{debug::debug_ui, state::Fps};
pub struct WinitState {
// The winit backend currently has no notion of multiple windows
backend: Rc<RefCell<WinitGraphicsBackend>>,
//_global: GlobalDrop<WlOutput>,
output: Output,
#[cfg(feature = "debug")]
fps: Fps,
}
impl WinitState {
pub fn render_output(
&mut self,
state: &mut Common,
) -> Result<()> {
#[allow(unused_mut)]
let mut custom_elements = Vec::new();
#[cfg(feature = "debug")]
{
let space = state.spaces.active_space(&self.output);
let size = space.output_geometry(&self.output).unwrap();
let scale = space.output_scale(&self.output).unwrap();
let frame = debug_ui(state, &self.fps, size, scale, true);
custom_elements.push(
Box::new(frame) as smithay::desktop::space::DynamicRenderElements<Gles2Renderer>
);
}
let space = state.spaces.active_space_mut(&self.output);
let mut backend = self.backend.borrow_mut();
let age = backend.buffer_age();
backend.bind().with_context(|| "Failed to bind buffer")?;
match space.render_output(
backend.renderer(),
&self.output,
age as usize,
[0.153, 0.161, 0.165, 1.0],
&*custom_elements,
) {
Ok(damage) => {
space.send_frames(false, state.start_time.elapsed().as_millis() as u32);
backend
.submit(damage.as_ref().map(|x| &**x), 1.0)
.with_context(|| "Failed to submit buffer for display")?;
#[cfg(feature = "debug")]
{
self.fps.tick();
}
}
Err(err) => {
anyhow::bail!("Rendering failed: {}", err);
}
};
Ok(())
}
}
pub fn init_backend(event_loop: &mut EventLoop<State>, state: &mut State) -> Result<()> {
let (backend, mut input) = winit::init(None).with_context(|| "Failed to initilize winit backend")?;
let backend = Rc::new(RefCell::new(backend));
init_egl_client_side(&mut *state.common.display.borrow_mut(), backend.clone())?;
let name = format!("WINIT-0");
let size = backend.borrow().window_size();
let props = PhysicalProperties {
size: (0, 0).into(),
subpixel: Subpixel::Unknown,
make: "COSMIC".to_string(),
model: name.clone(),
};
let mode = Mode {
size: (size.physical_size.w as i32, size.physical_size.h as i32).into(),
refresh: 60_000,
};
let (output, _global) = Output::new(&mut *state.common.display.borrow_mut(), name, props, None);
//let _global = global.into();
output.change_current_state(Some(mode), Some(Transform::Flipped180), None, Some((0, 0).into()));
output.set_preferred(mode);
state.common.spaces.map_output(&output);
let (event_ping, event_source) = ping::make_ping().with_context(|| "Failed to init eventloop timer for winit")?;
let (render_ping, render_source) = ping::make_ping().with_context(|| "Failed to init eventloop timer for winit")?;
let event_ping_handle = event_ping.clone();
let render_ping_handle = render_ping.clone();
let mut token = Some(event_loop
.handle()
.insert_source(
render_source,
move |_, _, state| {
if let Err(err) = state.backend.winit().render_output(&mut state.common) {
slog_scope::error!("Failed to render frame: {}", err);
render_ping.ping();
}
}
).map_err(|_| anyhow::anyhow!("Failed to init eventloop timer for winit"))?);
let event_loop_handle = event_loop.handle();
event_loop
.handle()
.insert_source(
event_source,
move |_, _, state| {
match input.dispatch_new_events(|event| state.process_winit_event(event, &render_ping_handle)) {
Ok(_) => {
event_ping_handle.ping();
render_ping_handle.ping();
},
Err(winit::WinitError::WindowClosed) => {
let winit_state = state.backend.winit();
state.common.spaces.unmap_output(&winit_state.output);
if let Some(token) = token.take() {
event_loop_handle.remove(token);
}
}
};
}
).map_err(|_| anyhow::anyhow!("Failed to init eventloop timer for winit"))?;
event_ping.ping();
state.backend = BackendData::Winit(WinitState {
backend,
output,
#[cfg(feature = "debug")]
fps: Fps::default(),
});
Ok(())
}
fn init_egl_client_side(display: &mut Display, renderer: Rc<RefCell<WinitGraphicsBackend>>) -> Result<()> {
let bind_result = renderer.borrow_mut().renderer().bind_wl_display(display);
match bind_result {
Ok(_) => {
slog_scope::info!("EGL hardware-acceleration enabled");
let dmabuf_formats = renderer
.borrow_mut()
.renderer()
.dmabuf_formats()
.cloned()
.collect::<Vec<_>>();
init_dmabuf_global(
display,
dmabuf_formats,
move |buffer, _| renderer.borrow_mut().renderer().import_dmabuf(buffer).is_ok(),
None,
);
}
Err(err) => slog_scope::warn!("Unable to initialize bind display to EGL: {}", err),
};
Ok(())
}
impl State {
pub fn process_winit_event(&mut self, event: WinitEvent, render_ping: &ping::Ping) {
// here we can handle special cases for winit inputs
match event {
WinitEvent::Focus(true) => {
for seat in self.common.seats.clone().iter() {
let devices = seat.user_data().get::<Devices>().unwrap();
if devices.has_device(&WinitVirtualDevice) {
set_active_output(seat, &self.backend.winit().output);
break;
}
}
}
WinitEvent::Resized { size, .. } => {
let winit_state = self.backend.winit();
let output = &winit_state.output;
let mode = Mode {
size,
refresh: 60_000,
};
output.delete_mode(output.current_mode().unwrap());
output.change_current_state(Some(mode), None, None, None);
output.set_preferred(mode);
layer_map_for_output(output).arrange();
render_ping.ping();
},
WinitEvent::Refresh => render_ping.ping(),
WinitEvent::Input(event) => self.common.process_input_event(event),
_ => {},
};
}
}

View file

@ -1,7 +1,10 @@
// SPDX-License-Identifier: GPL-3.0-only
use crate::{
backend::x11::X11State,
backend::{
x11::X11State,
winit::WinitState,
},
shell::{init_shell, workspaces::Workspaces, ShellStates},
};
use smithay::{
@ -59,6 +62,7 @@ pub struct Fps {
pub enum BackendData {
X11(X11State),
Winit(WinitState),
// TODO
// Wayland(WaylandState),
// Udev(UdevState),
@ -72,6 +76,13 @@ impl BackendData {
_ => unreachable!("Called x11 in non x11 backend"),
}
}
pub fn winit(&mut self) -> &mut WinitState {
match self {
BackendData::Winit(ref mut winit_state) => winit_state,
_ => unreachable!("Called winit in non winit backend"),
}
}
}
impl State {