253 lines
9.8 KiB
Rust
253 lines
9.8 KiB
Rust
extern crate drm;
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#[macro_use]
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extern crate glium;
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extern crate rand;
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#[macro_use(define_roles)]
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extern crate smithay;
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extern crate wayland_server;
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#[macro_use]
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extern crate slog;
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extern crate slog_async;
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extern crate slog_term;
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mod helpers;
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use drm::Device as BasicDevice;
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use drm::control::{Device as ControlDevice, ResourceInfo};
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use drm::control::connector::{Info as ConnectorInfo, State as ConnectorState};
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use drm::control::crtc;
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use drm::control::encoder::Info as EncoderInfo;
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use drm::result::Error as DrmError;
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use glium::{Blend, Surface};
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use helpers::{init_shell, Buffer, GliumDrawer, MyWindowMap, Roles, SurfaceData};
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use slog::{Drain, Logger};
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use smithay::backend::drm::{drm_device_bind, DrmBackend, DrmDevice, DrmHandler};
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use smithay::backend::graphics::egl::EGLGraphicsBackend;
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use smithay::backend::graphics::egl::wayland::{EGLDisplay, EGLWaylandExtensions, Format};
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use smithay::wayland::compositor::{CompositorToken, SubsurfaceRole, TraversalAction};
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use smithay::wayland::compositor::roles::Role;
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use smithay::wayland::shm::init_shm_global;
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use std::cell::RefCell;
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use std::fs::{File, OpenOptions};
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use std::os::unix::io::AsRawFd;
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use std::os::unix::io::RawFd;
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use std::rc::Rc;
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use std::time::Duration;
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#[derive(Debug)]
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pub struct Card(File);
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impl AsRawFd for Card {
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fn as_raw_fd(&self) -> RawFd {
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self.0.as_raw_fd()
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}
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}
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impl BasicDevice for Card {}
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impl ControlDevice for Card {}
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fn main() {
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// A logger facility, here we use the terminal for this example
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let log = Logger::root(
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slog_async::Async::default(slog_term::term_full().fuse()).fuse(),
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o!(),
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);
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// Initialize the wayland server
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let (mut display, mut event_loop) = wayland_server::create_display();
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/*
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* Initialize the drm backend
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*/
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// "Find" a suitable drm device
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let mut options = OpenOptions::new();
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options.read(true);
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options.write(true);
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let mut device = DrmDevice::new(
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Card(options.clone().open("/dev/dri/card0").unwrap()),
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log.clone(),
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).unwrap();
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// Get a set of all modesetting resource handles (excluding planes):
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let res_handles = device.resource_handles().unwrap();
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// Use first connected connector
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let connector_info = res_handles
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.connectors()
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.iter()
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.map(|conn| ConnectorInfo::load_from_device(&device, *conn).unwrap())
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.find(|conn| conn.connection_state() == ConnectorState::Connected)
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.unwrap();
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// Use the first encoder
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let encoder_info = EncoderInfo::load_from_device(&device, connector_info.encoders()[0]).unwrap();
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// use the connected crtc if any
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let crtc = encoder_info.current_crtc()
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// or use the first one that is compatible with the encoder
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.unwrap_or_else(||
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*res_handles.filter_crtcs(encoder_info.possible_crtcs())
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.iter()
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.next()
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.unwrap());
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// Assuming we found a good connector and loaded the info into `connector_info`
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let mode = connector_info.modes()[0]; // Use first mode (usually highest resoltion, but in reality you should filter and sort and check and match with other connectors, if you use more then one.)
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// Initialize the hardware backend
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let renderer = GliumDrawer::from(
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device
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.create_backend(crtc, mode, vec![connector_info.handle()])
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.unwrap(),
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);
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{
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/*
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* Initialize glium
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*/
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let mut frame = renderer.draw();
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frame.clear_color(0.8, 0.8, 0.9, 1.0);
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frame.finish().unwrap();
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}
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let egl_display = Rc::new(RefCell::new(
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if let Ok(egl_display) = renderer.bind_wl_display(&display) {
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info!(log, "EGL hardware-acceleration enabled");
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Some(egl_display)
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} else {
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None
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},
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));
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/*
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* Initialize the globals
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*/
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init_shm_global(&mut event_loop, vec![], log.clone());
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let (compositor_token, _shell_state_token, window_map) =
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init_shell(&mut event_loop, log.clone(), egl_display.clone());
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/*
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* Add a listening socket:
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*/
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let name = display.add_socket_auto().unwrap().into_string().unwrap();
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println!("Listening on socket: {}", name);
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/*
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* Register the DrmDevice on the EventLoop
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*/
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let device_token = event_loop.state().insert(device);
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let _source = drm_device_bind(
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&mut event_loop,
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device_token,
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DrmHandlerImpl {
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compositor_token,
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window_map: window_map.clone(),
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drawer: renderer,
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logger: log,
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},
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).unwrap();
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loop {
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event_loop.dispatch(Some(16)).unwrap();
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display.flush_clients();
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window_map.borrow_mut().refresh();
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}
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}
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pub struct DrmHandlerImpl {
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compositor_token: CompositorToken<SurfaceData, Roles, Rc<RefCell<Option<EGLDisplay>>>>,
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window_map: Rc<RefCell<MyWindowMap>>,
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drawer: GliumDrawer<DrmBackend<Card>>,
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logger: ::slog::Logger,
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}
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impl DrmHandler<Card> for DrmHandlerImpl {
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fn ready(
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&mut self, _device: &mut DrmDevice<Card>, _crtc: crtc::Handle, _frame: u32, _duration: Duration
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) {
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let mut frame = self.drawer.draw();
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frame.clear_color(0.8, 0.8, 0.9, 1.0);
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// redraw the frame, in a simple but inneficient way
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{
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let screen_dimensions = self.drawer.get_framebuffer_dimensions();
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self.window_map
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.borrow()
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.with_windows_from_bottom_to_top(|toplevel_surface, initial_place| {
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if let Some(wl_surface) = toplevel_surface.get_surface() {
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// this surface is a root of a subsurface tree that needs to be drawn
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self.compositor_token
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.with_surface_tree_upward(
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wl_surface,
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initial_place,
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|_surface, attributes, role, &(mut x, mut y)| {
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// there is actually something to draw !
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if attributes.user_data.texture.is_none() {
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let mut remove = false;
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match attributes.user_data.buffer {
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Some(Buffer::Egl { ref images }) => {
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match images.format {
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Format::RGB | Format::RGBA => {
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attributes.user_data.texture =
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self.drawer.texture_from_egl(&images);
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}
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_ => {
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// we don't handle the more complex formats here.
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attributes.user_data.texture = None;
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remove = true;
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}
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};
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}
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Some(Buffer::Shm { ref data, ref size }) => {
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attributes.user_data.texture =
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Some(self.drawer.texture_from_mem(data, *size));
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}
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_ => {}
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}
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if remove {
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attributes.user_data.buffer = None;
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}
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}
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if let Some(ref texture) = attributes.user_data.texture {
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if let Ok(subdata) = Role::<SubsurfaceRole>::data(role) {
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x += subdata.x;
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y += subdata.y;
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}
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info!(self.logger, "Render window");
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self.drawer.render_texture(
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&mut frame,
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texture,
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match *attributes.user_data.buffer.as_ref().unwrap() {
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Buffer::Egl { ref images } => images.y_inverted,
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Buffer::Shm { .. } => false,
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},
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match *attributes.user_data.buffer.as_ref().unwrap() {
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Buffer::Egl { ref images } => (images.width, images.height),
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Buffer::Shm { ref size, .. } => *size,
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},
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(x, y),
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screen_dimensions,
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Blend::alpha_blending(),
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);
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TraversalAction::DoChildren((x, y))
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} else {
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// we are not display, so our children are neither
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TraversalAction::SkipChildren
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}
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},
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)
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.unwrap();
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}
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});
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}
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frame.finish().unwrap();
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}
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fn error(&mut self, _device: &mut DrmDevice<Card>, error: DrmError) {
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panic!("{:?}", error);
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}
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}
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