smithay/examples/raw_nvidia.rs

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#![warn(rust_2018_idioms)]
#[macro_use]
extern crate slog;
use glium::Surface as GliumSurface;
use slog::Drain;
use smithay::{
backend::{
drm::{
atomic::AtomicDrmDevice,
common::fallback::{EitherError, FallbackDevice},
common::Error as DrmError,
device_bind,
egl::{EglDevice, EglSurface, Error as EglError},
eglstream::{
egl::EglStreamDeviceBackend, EglStreamDevice, EglStreamSurface, Error as EglStreamError,
},
legacy::LegacyDrmDevice,
Device, DeviceHandler,
},
graphics::glium::GliumGraphicsBackend,
},
reexports::{
calloop::EventLoop,
drm::control::{connector::State as ConnectorState, crtc},
},
};
use std::{
fs::{File, OpenOptions},
io::Error as IoError,
os::unix::io::{AsRawFd, RawFd},
rc::Rc,
sync::Mutex,
};
pub struct ClonableFile {
file: File,
}
impl AsRawFd for ClonableFile {
fn as_raw_fd(&self) -> RawFd {
self.file.as_raw_fd()
}
}
impl Clone for ClonableFile {
fn clone(&self) -> Self {
ClonableFile {
file: self.file.try_clone().expect("Unable to clone file"),
}
}
}
fn main() {
let log = slog::Logger::root(Mutex::new(slog_term::term_full().fuse()).fuse(), o!());
/*
* Initialize the drm backend
*/
// "Find" a suitable drm device
let mut options = OpenOptions::new();
options.read(true);
options.write(true);
let file = ClonableFile {
file: options.open("/dev/dri/card1").expect("Failed to open card1"),
};
let mut device = EglDevice::new(
EglStreamDevice::new(
FallbackDevice::<AtomicDrmDevice<_>, LegacyDrmDevice<_>>::new(file, true, log.clone())
.expect("Failed to initialize drm device"),
log.clone(),
)
.expect("Failed to initialize egl stream device"),
log.clone(),
)
.expect("Failed to initialize egl device");
// Get a set of all modesetting resource handles (excluding planes):
let res_handles = Device::resource_handles(&device).unwrap();
// Use first connected connector
let connector_info = res_handles
.connectors()
.iter()
.map(|conn| Device::get_connector_info(&device, *conn).unwrap())
.find(|conn| conn.state() == ConnectorState::Connected)
.unwrap();
println!("Conn: {:?}", connector_info.interface());
// Use the first encoder
let encoder_info =
Device::get_encoder_info(&device, connector_info.encoders()[0].expect("expected encoder")).unwrap();
// use the connected crtc if any
let crtc = encoder_info
.crtc()
// or use the first one that is compatible with the encoder
.unwrap_or_else(|| {
*res_handles
.filter_crtcs(encoder_info.possible_crtcs())
.iter()
.next()
.unwrap()
});
println!("Crtc {:?}", crtc);
// Assuming we found a good connector and loaded the info into `connector_info`
let mode = connector_info.modes()[0]; // Use first mode (usually highest resolution, but in reality you should filter and sort and check and match with other connectors, if you use more then one.)
println!("Mode: {:?}", mode);
// Initialize the hardware backend
let surface = device
.create_surface(crtc, mode, &[connector_info.handle()])
.expect("Failed to create surface");
let backend: Rc<GliumGraphicsBackend<_>> = Rc::new(surface.into());
device.set_handler(DrmHandlerImpl {
surface: backend.clone(),
});
/*
* Register the DrmDevice on the EventLoop
*/
let mut event_loop = EventLoop::<()>::new().unwrap();
let _source = device_bind(&event_loop.handle(), device)
.map_err(|err| -> IoError { err.into() })
.unwrap();
// Start rendering
{
if let Err(smithay::backend::graphics::SwapBuffersError::ContextLost(err)) = backend.draw().finish() {
println!("{}", err);
return;
};
}
// Run
event_loop.run(None, &mut (), |_| {}).unwrap();
}
pub struct DrmHandlerImpl {
surface: Rc<
GliumGraphicsBackend<
EglSurface<
EglStreamSurface<
FallbackDevice<AtomicDrmDevice<ClonableFile>, LegacyDrmDevice<ClonableFile>>,
>,
>,
>,
>,
}
impl DeviceHandler for DrmHandlerImpl {
type Device = EglDevice<
EglStreamDeviceBackend<FallbackDevice<AtomicDrmDevice<ClonableFile>, LegacyDrmDevice<ClonableFile>>>,
EglStreamDevice<FallbackDevice<AtomicDrmDevice<ClonableFile>, LegacyDrmDevice<ClonableFile>>>,
>;
fn vblank(&mut self, _crtc: crtc::Handle) {
{
println!("Vblank");
let mut frame = self.surface.draw();
frame.clear(None, Some((0.8, 0.8, 0.9, 1.0)), false, Some(1.0), None);
if let Err(smithay::backend::graphics::SwapBuffersError::ContextLost(err)) = frame.finish() {
panic!("Failed to swap: {}", err);
}
}
}
fn error(&mut self, error: EglError<EglStreamError<EitherError<DrmError, DrmError>>>) {
panic!("{:?}", error);
}
}