use std::borrow::Cow;
use winit::{
event::{Event, WindowEvent},
event_loop::{ControlFlow, EventLoop},
window::Window,
};
use wry::{
dpi::{LogicalPosition, LogicalSize},
Rect, WebViewBuilder,
};
async fn run(event_loop: EventLoop<()>, window: Window) {
let size = window.inner_size();
let instance = wgpu::Instance::default();
let surface = instance.create_surface(&window).unwrap();
let adapter = instance
.request_adapter(&wgpu::RequestAdapterOptions {
power_preference: wgpu::PowerPreference::default(),
force_fallback_adapter: false,
compatible_surface: Some(&surface),
})
.await
.expect("Failed to find an appropriate adapter");
let (device, queue) = adapter
.request_device(
&wgpu::DeviceDescriptor {
label: None,
required_features: wgpu::Features::empty(),
required_limits: wgpu::Limits::downlevel_webgl2_defaults()
.using_resolution(adapter.limits()),
},
None,
)
.await
.expect("Failed to create device");
let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
label: None,
source: wgpu::ShaderSource::Wgsl(Cow::Borrowed(
r#"
@vertex
fn vs_main(@builtin(vertex_index) in_vertex_index: u32) -> @builtin(position) vec4<f32> {
let x = f32(i32(in_vertex_index) - 1);
let y = f32(i32(in_vertex_index & 1u) * 2 - 1);
return vec4<f32>(x, y, 0.0, 1.0);
}
@fragment
fn fs_main() -> @location(0) vec4<f32> {
return vec4<f32>(1.0, 0.0, 0.0, 1.0);
}
"#,
)),
});
let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
label: None,
bind_group_layouts: &[],
push_constant_ranges: &[],
});
let swapchain_capabilities = surface.get_capabilities(&adapter);
let swapchain_format = swapchain_capabilities.formats[0];
let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
label: None,
layout: Some(&pipeline_layout),
vertex: wgpu::VertexState {
module: &shader,
entry_point: "vs_main",
buffers: &[],
},
fragment: Some(wgpu::FragmentState {
module: &shader,
entry_point: "fs_main",
targets: &[Some(swapchain_format.into())],
}),
primitive: wgpu::PrimitiveState::default(),
depth_stencil: None,
multisample: wgpu::MultisampleState::default(),
multiview: None,
});
let mut config = wgpu::SurfaceConfiguration {
usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
format: swapchain_format,
width: size.width,
height: size.height,
present_mode: wgpu::PresentMode::Fifo,
desired_maximum_frame_latency: 2,
alpha_mode: swapchain_capabilities.alpha_modes[0],
view_formats: vec![],
};
surface.configure(&device, &config);
let _webview = WebViewBuilder::new()
.with_bounds(Rect {
position: LogicalPosition::new(100, 100).into(),
size: LogicalSize::new(200, 200).into(),
})
.with_transparent(true)
.with_html(
r#"<html>
<body style="background-color:rgba(87,87,87,0.5);"></body>
<script>
window.onload = function() {
document.body.innerText = `hello, ${navigator.userAgent}`;
};
</script>
</html>"#,
)
.build_as_child(&window)
.unwrap();
event_loop
.run(|event, evl| {
evl.set_control_flow(ControlFlow::Poll);
match event {
Event::WindowEvent {
event: WindowEvent::Resized(size),
..
} => {
config.width = size.width;
config.height = size.height;
surface.configure(&device, &config);
window.request_redraw();
}
Event::WindowEvent {
event: WindowEvent::RedrawRequested,
..
} => {
let frame = surface
.get_current_texture()
.expect("Failed to acquire next swap chain texture");
let view = frame
.texture
.create_view(&wgpu::TextureViewDescriptor::default());
let mut encoder =
device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
{
let mut rpass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
label: None,
color_attachments: &[Some(wgpu::RenderPassColorAttachment {
view: &view,
resolve_target: None,
ops: wgpu::Operations {
load: wgpu::LoadOp::Clear(wgpu::Color::TRANSPARENT),
store: wgpu::StoreOp::Store,
},
})],
depth_stencil_attachment: None,
timestamp_writes: None,
occlusion_query_set: None,
});
rpass.set_pipeline(&render_pipeline);
rpass.draw(0..3, 0..1);
}
queue.submit(Some(encoder.finish()));
frame.present();
}
Event::WindowEvent {
event: WindowEvent::CloseRequested,
..
} => evl.exit(),
_ => {}
}
#[cfg(any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd",
))]
while gtk::events_pending() {
gtk::main_iteration_do(false);
}
})
.unwrap();
}
fn main() {
#[cfg(any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd",
))]
{
use gtk::prelude::DisplayExtManual;
gtk::init().unwrap();
if gtk::gdk::Display::default().unwrap().backend().is_wayland() {
panic!("This example doesn't support wayland!");
}
winit::platform::x11::register_xlib_error_hook(Box::new(|_display, error| {
let error = error as *mut x11_dl::xlib::XErrorEvent;
(unsafe { (*error).error_code }) == 170
}));
}
let event_loop = EventLoop::new().unwrap();
let window = winit::window::WindowBuilder::new()
.with_transparent(true)
.build(&event_loop)
.unwrap();
pollster::block_on(run(event_loop, window));
}