Migrate the winit backend to the new egl and renderer apis.
This commit is contained in:
Victor Brekenfeld
parent
f3f10242e9
commit
3a2e4ddf61
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@ -1,10 +1,12 @@
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//! Implementation of backend traits for types provided by `winit`
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use crate::backend::egl::display::EGLDisplay;
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use crate::backend::egl::get_proc_address;
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use crate::backend::{
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egl::{context::GlAttributes, native, EGLContext, EGLSurface, Error as EGLError, SurfaceCreationError},
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graphics::{gl::GLGraphicsBackend, CursorBackend, PixelFormat, SwapBuffersError},
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egl::{context::GlAttributes, native, EGLContext, EGLSurface, Error as EGLError},
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renderer::{
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Renderer, Bind, Transform, Frame,
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gles2::{Gles2Renderer, Gles2Error, Gles2Texture, Gles2Frame},
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},
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input::{
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Axis, AxisSource, Event as BackendEvent, InputBackend, InputEvent, KeyState, KeyboardKeyEvent,
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MouseButton, MouseButtonState, PointerAxisEvent, PointerButtonEvent, PointerMotionAbsoluteEvent,
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@ -12,16 +14,16 @@ use crate::backend::{
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UnusedEvent,
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},
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};
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use nix::libc::c_void;
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use std::{
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cell::{Ref, RefCell},
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convert::TryInto,
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fmt,
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cell::RefCell,
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rc::Rc,
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time::Instant,
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};
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use cgmath::Matrix3;
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use wayland_egl as wegl;
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use wayland_server::Display;
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#[cfg(feature = "wayland_frontend")]
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use wayland_server::protocol::{wl_shm, wl_buffer};
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use winit::{
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dpi::{LogicalPosition, LogicalSize, PhysicalSize},
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event::{
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@ -29,12 +31,13 @@ use winit::{
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TouchPhase, WindowEvent,
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},
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event_loop::{ControlFlow, EventLoop},
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platform::run_return::EventLoopExtRunReturn,
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window::{CursorIcon, Window as WinitWindow, WindowBuilder},
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platform::desktop::EventLoopExtDesktop,
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platform::unix::WindowExtUnix,
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window::{Window as WinitWindow, WindowBuilder},
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};
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#[cfg(feature = "use_system_lib")]
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use crate::backend::egl::{display::EGLBufferReader, EGLGraphicsBackend};
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use crate::backend::egl::{display::EGLBufferReader};
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/// Errors thrown by the `winit` backends
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#[derive(thiserror::Error, Debug)]
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@ -47,71 +50,32 @@ pub enum Error {
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NotSupported,
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/// EGL error
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#[error("EGL error: {0}")]
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EGL(#[from] EGLError),
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/// Surface Creation failed
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#[error("Surface creation failed: {0}")]
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SurfaceCreationError(#[from] SurfaceCreationError<EGLError>),
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Egl(#[from] EGLError),
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/// Renderer initialization failed
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#[error("Renderer creation failed: {0}")]
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RendererCreationError(#[from] Gles2Error),
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}
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enum Window {
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Wayland {
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display: EGLDisplay<native::Wayland, WinitWindow>,
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context: EGLContext,
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surface: EGLSurface<wegl::WlEglSurface>,
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},
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X11 {
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display: EGLDisplay<native::X11, WinitWindow>,
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context: EGLContext,
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surface: EGLSurface<native::XlibWindow>,
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},
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}
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// WlEglSurface does not implement debug, so we have to impl Debug manually
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impl fmt::Debug for Window {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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Window::Wayland { display, context, .. } => f
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.debug_struct("Window::Wayland")
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.field("display", &display)
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.field("context", &context)
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.field("surface", &"...")
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.finish(),
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Window::X11 {
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display,
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context,
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surface,
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} => f
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.debug_struct("Window::X11")
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.field("display", &display)
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.field("context", &context)
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.field("surface", &surface)
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.finish(),
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}
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}
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}
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impl Window {
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fn window(&self) -> Ref<'_, WinitWindow> {
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match *self {
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Window::Wayland { ref display, .. } => display.borrow(),
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Window::X11 { ref display, .. } => display.borrow(),
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}
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}
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}
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#[derive(Debug)]
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struct WindowSize {
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physical_size: PhysicalSize<u32>,
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scale_factor: f64,
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#[derive(Debug, Clone)]
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pub struct WindowSize {
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pub physical_size: PhysicalSize<u32>,
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pub scale_factor: f64,
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}
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/// Window with an active EGL Context created by `winit`. Implements the
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/// [`EGLGraphicsBackend`] and [`GLGraphicsBackend`] graphics backend trait
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#[derive(Debug)]
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pub struct WinitGraphicsBackend {
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window: Rc<Window>,
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renderer: Gles2Renderer,
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display: EGLDisplay,
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egl: Rc<EGLSurface>,
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window: Rc<WinitWindow>,
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size: Rc<RefCell<WindowSize>>,
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logger: ::slog::Logger,
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}
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pub struct WinitFrame {
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frame: Gles2Frame,
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egl: Rc<EGLSurface>,
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}
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/// Abstracted event loop of a [`WinitWindow`] implementing the [`InputBackend`] trait
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@ -120,8 +84,9 @@ pub struct WinitGraphicsBackend {
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/// periodically to receive any events.
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#[derive(Debug)]
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pub struct WinitInputBackend {
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egl: Rc<EGLSurface>,
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window: Rc<WinitWindow>,
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events_loop: EventLoop<()>,
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window: Rc<Window>,
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time: Instant,
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key_counter: u32,
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seat: Seat,
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@ -158,7 +123,7 @@ where
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init_from_builder_with_gl_attr(
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builder,
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GlAttributes {
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version: None,
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version: (3, 0),
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profile: None,
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debug: cfg!(debug_assertions),
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vsync: true,
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@ -188,54 +153,53 @@ where
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debug!(log, "Window created");
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let reqs = Default::default();
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let window = Rc::new(
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if native::NativeDisplay::<native::Wayland>::is_backend(&winit_window) {
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let display = EGLDisplay::<native::Wayland, WinitWindow>::new(winit_window, log.clone())?;
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let context = display.create_context(attributes, reqs)?;
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let surface = display.create_surface(
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context.get_pixel_format(),
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reqs.double_buffer,
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context.get_config_id(),
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(),
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)?;
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Window::Wayland {
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display,
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context,
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surface,
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}
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} else if native::NativeDisplay::<native::X11>::is_backend(&winit_window) {
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let display = EGLDisplay::<native::X11, WinitWindow>::new(winit_window, log.clone())?;
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let context = display.create_context(attributes, reqs)?;
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let surface = display.create_surface(
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context.get_pixel_format(),
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reqs.double_buffer,
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context.get_config_id(),
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(),
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)?;
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Window::X11 {
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display,
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context,
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surface,
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}
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let (display, context, surface) = {
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let display = EGLDisplay::new(&winit_window, log.clone())?;
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let context = EGLContext::new_with_config(&display, attributes, reqs, log.clone())?;
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let surface = if let Some(wl_surface) = winit_window.wayland_surface() {
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debug!(log, "Winit backend: Wayland");
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let size = winit_window.inner_size();
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let surface = unsafe {
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wegl::WlEglSurface::new_from_raw(wl_surface as *mut _, size.width as i32, size.height as i32)
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};
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EGLSurface::new(&display, context.pixel_format().unwrap(), reqs.double_buffer, context.config_id(), surface, log.clone())
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.map_err(EGLError::CreationFailed)?
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} else if let Some(xlib_window) = winit_window.xlib_window().map(native::XlibWindow) {
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debug!(log, "Winit backend: X11");
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EGLSurface::new(&display, context.pixel_format().unwrap(), reqs.double_buffer, context.config_id(), xlib_window, log.clone())
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.map_err(EGLError::CreationFailed)?
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} else {
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return Err(Error::NotSupported);
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},
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);
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unreachable!("No backends for winit other then Wayland and X11 are supported")
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};
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(
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display,
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context,
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surface,
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)
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};
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let size = Rc::new(RefCell::new(WindowSize {
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physical_size: window.window().inner_size(), // TODO: original code check if window is alive or not using inner_size().expect()
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scale_factor: window.window().scale_factor(),
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physical_size: winit_window.inner_size(), // TODO: original code check if window is alive or not using inner_size().expect()
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scale_factor: winit_window.scale_factor(),
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}));
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let window = Rc::new(winit_window);
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let egl = Rc::new(surface);
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Ok((
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WinitGraphicsBackend {
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window: window.clone(),
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display,
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egl: egl.clone(),
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renderer: Gles2Renderer::new(context, log.clone())?,
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size: size.clone(),
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logger: log.new(o!("smithay_winit_component" => "graphics")),
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},
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WinitInputBackend {
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events_loop,
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window,
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egl,
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time: Instant::now(),
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key_counter: 0,
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seat: Seat::new(
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@ -269,111 +233,71 @@ pub enum WinitEvent {
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Refresh,
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}
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#[cfg(feature = "use_system_lib")]
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impl WinitGraphicsBackend {
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/// Get a reference to the internally used [`WinitWindow`]
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pub fn winit_window(&self) -> Ref<'_, WinitWindow> {
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self.window.window()
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}
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pub fn bind_wl_display(&self, wl_display: &Display) -> Result<EGLBufferReader, EGLError> {
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self.display.bind_wl_display(wl_display)
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}
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impl CursorBackend for WinitGraphicsBackend {
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type CursorFormat = CursorIcon;
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type Error = ();
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fn set_cursor_position(&self, _x: u32, _y: u32) -> ::std::result::Result<(), ()> {
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// With other backends, we read events from input devices and then have to position the
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// mouse cursor on screen accordingly. Here, there is already a windowing system that deals
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// with the position on screen. If we "force" out idea of the cursor position here, that
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// breaks and e.g. the cursor on X11 becomes stuck and cannot move. (Us forcing a cursor
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// position generates a mouse move event and thus we force the same cursor position again.)
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Ok(())
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pub fn window_size(&self) -> WindowSize {
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self.size.borrow().clone()
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}
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fn set_cursor_representation(
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&self,
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cursor: &Self::CursorFormat,
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_hotspot: (u32, u32),
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) -> ::std::result::Result<(), ()> {
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// Cannot log this one, as `CursorFormat` is not `Debug` and should not be
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debug!(self.logger, "Changing cursor representation");
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self.window.window().set_cursor_icon(*cursor);
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self.window.window().set_cursor_visible(true);
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Ok(())
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pub fn window(&self) -> &WinitWindow {
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&*self.window
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}
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fn clear_cursor_representation(&self) -> ::std::result::Result<(), ()> {
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self.window.window().set_cursor_visible(false);
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Ok(())
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}
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}
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impl GLGraphicsBackend for WinitGraphicsBackend {
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fn swap_buffers(&self) -> ::std::result::Result<(), SwapBuffersError> {
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trace!(self.logger, "Swapping buffers");
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match *self.window {
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Window::Wayland { ref surface, .. } => {
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surface.swap_buffers().map_err(|err| err.try_into().unwrap())
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}
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Window::X11 { ref surface, .. } => surface.swap_buffers().map_err(|err| err.try_into().unwrap()),
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}
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}
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fn get_proc_address(&self, symbol: &str) -> *const c_void {
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trace!(self.logger, "Getting symbol for {:?}", symbol);
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get_proc_address(symbol)
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}
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fn get_framebuffer_dimensions(&self) -> (u32, u32) {
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pub fn begin(&mut self) -> Result<WinitFrame, Gles2Error> {
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let (width, height) = {
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let size = self.size.borrow();
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size.physical_size.into()
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}
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fn is_current(&self) -> bool {
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match *self.window {
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Window::Wayland {
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ref context,
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ref surface,
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..
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} => context.is_current() && surface.is_current(),
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Window::X11 {
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ref context,
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ref surface,
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..
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} => context.is_current() && surface.is_current(),
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};
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Renderer::begin(self, width, height, Transform::Normal)
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}
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}
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unsafe fn make_current(&self) -> ::std::result::Result<(), SwapBuffersError> {
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trace!(self.logger, "Setting EGL context to be the current context");
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match *self.window {
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Window::Wayland {
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ref surface,
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ref context,
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..
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} => context.make_current_with_surface(surface).map_err(Into::into),
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Window::X11 {
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ref surface,
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ref context,
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..
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} => context.make_current_with_surface(surface).map_err(Into::into),
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impl Renderer for WinitGraphicsBackend {
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type Error = Gles2Error;
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type Texture = Gles2Texture;
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type Frame = WinitFrame;
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fn begin(&mut self, width: u32, height: u32, transform: Transform) -> Result<Self::Frame, Self::Error> {
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self.renderer.bind(&*self.egl)?;
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let frame = self.renderer.begin(width, height, transform)?;
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Ok(WinitFrame {
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frame,
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egl: self.egl.clone(),
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})
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}
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#[cfg(feature = "wayland_frontend")]
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fn shm_formats(&self) -> &[wl_shm::Format] {
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self.renderer.shm_formats()
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}
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#[cfg(feature = "wayland_frontend")]
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fn import_shm(&self, buffer: &wl_buffer::WlBuffer) -> Result<Self::Texture, Self::Error> {
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self.renderer.import_shm(buffer)
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}
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}
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fn get_pixel_format(&self) -> PixelFormat {
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match *self.window {
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Window::Wayland { ref surface, .. } => surface.get_pixel_format(),
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Window::X11 { ref surface, .. } => surface.get_pixel_format(),
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}
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}
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impl Frame for WinitFrame {
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type Error = Gles2Error;
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type Texture = Gles2Texture;
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fn clear(&mut self, color: [f32; 4]) -> Result<(), Self::Error> {
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self.frame.clear(color)
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}
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#[cfg(feature = "use_system_lib")]
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impl EGLGraphicsBackend for WinitGraphicsBackend {
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fn bind_wl_display(&self, wl_display: &Display) -> Result<EGLBufferReader, EGLError> {
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match *self.window {
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Window::Wayland { ref display, .. } => display.bind_wl_display(wl_display),
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Window::X11 { ref display, .. } => display.bind_wl_display(wl_display),
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fn render_texture(&mut self, texture: &Self::Texture, matrix: Matrix3<f32>, alpha: f32) -> Result<(), Self::Error> {
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self.frame.render_texture(texture, matrix, alpha)
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}
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fn finish(self) -> Result<(), crate::backend::SwapBuffersError> {
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self.frame.finish()?;
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self.egl.swap_buffers()?;
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Ok(())
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}
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}
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@ -703,6 +627,7 @@ impl InputBackend for WinitInputBackend {
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let time = &self.time;
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let seat = &self.seat;
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let window = &self.window;
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let egl = &self.egl;
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let logger = &self.logger;
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let window_size = &self.size;
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let mut callback = move |event| callback(event, &mut WinitInputConfig);
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@ -722,13 +647,11 @@ impl InputBackend for WinitInputBackend {
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match event {
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WindowEvent::Resized(psize) => {
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trace!(logger, "Resizing window to {:?}", psize);
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let scale_factor = window.window().scale_factor();
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let scale_factor = window.scale_factor();
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let mut wsize = window_size.borrow_mut();
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wsize.physical_size = psize;
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wsize.scale_factor = scale_factor;
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if let Window::Wayland { ref surface, .. } = **window {
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surface.resize(psize.width as i32, psize.height as i32, 0, 0);
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}
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egl.resize(psize.width as i32, psize.height as i32, 0, 0);
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callback(InputEvent::Special(WinitEvent::Resized {
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size: psize.into(),
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scale_factor,
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@ -744,9 +667,7 @@ impl InputBackend for WinitInputBackend {
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} => {
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let mut wsize = window_size.borrow_mut();
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wsize.scale_factor = scale_factor;
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if let Window::Wayland { ref surface, .. } = **window {
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surface.resize(new_psize.width as i32, new_psize.height as i32, 0, 0);
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}
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egl.resize(new_psize.width as i32, new_psize.height as i32, 0, 0);
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let psize_f64: (f64, f64) = (new_psize.width.into(), new_psize.height.into());
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callback(InputEvent::Special(WinitEvent::Resized {
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size: psize_f64,
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