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|
//! Headless backend for tests.
//!
//! This can eventually grow into a more complete backend if needed, but for now it's missing some
//! crucial parts like dmabufs.
use std::mem;
use std::sync::{Arc, Mutex};
use anyhow::Context as _;
use niri_config::OutputName;
use smithay::backend::allocator::dmabuf::Dmabuf;
use smithay::backend::egl::native::EGLSurfacelessDisplay;
use smithay::backend::egl::{EGLContext, EGLDisplay};
use smithay::backend::renderer::element::RenderElementStates;
use smithay::backend::renderer::gles::GlesRenderer;
use smithay::output::{Mode, Output, PhysicalProperties, Subpixel};
use smithay::reexports::wayland_protocols::wp::presentation_time::server::wp_presentation_feedback;
use smithay::utils::Size;
use smithay::wayland::presentation::Refresh;
use super::{IpcOutputMap, OutputId, RenderResult};
use crate::niri::{Niri, RedrawState};
use crate::render_helpers::{resources, shaders};
use crate::utils::{get_monotonic_time, logical_output};
pub struct Headless {
renderer: Option<GlesRenderer>,
ipc_outputs: Arc<Mutex<IpcOutputMap>>,
}
impl Headless {
pub fn new() -> Self {
Self {
renderer: None,
ipc_outputs: Default::default(),
}
}
pub fn init(&mut self, _niri: &mut Niri) {}
pub fn add_renderer(&mut self) -> anyhow::Result<()> {
if self.renderer.is_some() {
error!("add_renderer: renderer must not already exist");
return Ok(());
}
let mut renderer = unsafe {
let display =
EGLDisplay::new(EGLSurfacelessDisplay).context("error creating EGL display")?;
let context = EGLContext::new(&display).context("error creating EGL context")?;
GlesRenderer::new(context).context("error creating renderer")?
};
resources::init(&mut renderer);
shaders::init(&mut renderer);
self.renderer = Some(renderer);
Ok(())
}
pub fn add_output(&mut self, niri: &mut Niri, n: u8, size: (u16, u16)) {
let connector = format!("headless-{n}");
let make = "niri".to_string();
let model = "headless".to_string();
let serial = n.to_string();
let output = Output::new(
connector.clone(),
PhysicalProperties {
size: (0, 0).into(),
subpixel: Subpixel::Unknown,
make: make.clone(),
model: model.clone(),
serial_number: serial.clone(),
},
);
let mode = Mode {
size: Size::from((i32::from(size.0), i32::from(size.1))),
refresh: 60_000,
};
output.change_current_state(Some(mode), None, None, None);
output.set_preferred(mode);
output.user_data().insert_if_missing(|| OutputName {
connector,
make: Some(make),
model: Some(model),
serial: Some(serial),
});
let physical_properties = output.physical_properties();
self.ipc_outputs.lock().unwrap().insert(
OutputId::next(),
niri_ipc::Output {
name: output.name(),
make: physical_properties.make,
model: physical_properties.model,
serial: None,
physical_size: None,
modes: vec![niri_ipc::Mode {
width: size.0,
height: size.1,
refresh_rate: 60_000,
is_preferred: true,
}],
current_mode: Some(0),
is_custom_mode: true,
vrr_supported: false,
vrr_enabled: false,
logical: Some(logical_output(&output)),
},
);
niri.add_output(output, None, false);
}
pub fn seat_name(&self) -> String {
"headless".to_owned()
}
pub fn with_primary_renderer<T>(
&mut self,
f: impl FnOnce(&mut GlesRenderer) -> T,
) -> Option<T> {
self.renderer.as_mut().map(f)
}
pub fn render(&mut self, niri: &mut Niri, output: &Output) -> RenderResult {
let states = RenderElementStates::default();
let mut presentation_feedbacks = niri.take_presentation_feedbacks(output, &states);
presentation_feedbacks.presented::<_, smithay::utils::Monotonic>(
get_monotonic_time(),
Refresh::Unknown,
0,
wp_presentation_feedback::Kind::empty(),
);
let output_state = niri.output_state.get_mut(output).unwrap();
match mem::replace(&mut output_state.redraw_state, RedrawState::Idle) {
RedrawState::Idle => unreachable!(),
RedrawState::Queued => (),
RedrawState::WaitingForVBlank { .. } => unreachable!(),
RedrawState::WaitingForEstimatedVBlank(_) => unreachable!(),
RedrawState::WaitingForEstimatedVBlankAndQueued(_) => unreachable!(),
}
output_state.frame_callback_sequence = output_state.frame_callback_sequence.wrapping_add(1);
// FIXME: request redraw on unfinished animations remain
RenderResult::Submitted
}
pub fn import_dmabuf(&mut self, _dmabuf: &Dmabuf) -> bool {
unimplemented!()
}
pub fn ipc_outputs(&self) -> Arc<Mutex<IpcOutputMap>> {
self.ipc_outputs.clone()
}
}
impl Default for Headless {
fn default() -> Self {
Self::new()
}
}
|
