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use std::sync::Arc;
use ash::vk;
use wgsl_view::gpu;
use wgsl_view::window::{PreviewWindow, ScaleMode};
use winit::application::ApplicationHandler;
use winit::event::{ElementState, KeyEvent, WindowEvent};
use winit::event_loop::EventLoop;
use winit::keyboard::{Key, NamedKey};
struct AppState {
device: wgpu::Device,
queue: wgpu::Queue,
preview: PreviewWindow,
client: texture_share_vk_client::VkClient,
fence: vk::Fence,
canvas: wgpu::Texture,
name: String,
}
struct App {
scale_mode: ScaleMode,
name: String,
state: Option<AppState>,
}
impl ApplicationHandler for App {
fn resumed(&mut self, event_loop: &winit::event_loop::ActiveEventLoop) {
let instance = gpu::create_instance();
// Create a temporary headless device to connect to TSV and read image dimensions
let temp_adapter = gpu::create_adapter(&instance, None);
let (temp_device, _temp_queue) = gpu::create_device(&temp_adapter);
let mut client = gpu::create_tsv_client(&temp_device);
let (width, height) = match client.find_image_data(&self.name, true) {
Ok(Some((_lock, data))) => (data.width, data.height),
Ok(None) => {
log::error!("tsv image '{}' not found", self.name);
event_loop.exit();
return;
}
Err(e) => {
log::error!("failed to find tsv image '{}': {e}", self.name);
event_loop.exit();
return;
}
};
log::info!("found tsv image '{}': {width}x{height}", self.name);
drop(client);
drop(temp_device);
let window = Arc::new(
event_loop
.create_window(
winit::window::Window::default_attributes()
.with_title(format!("tsv-view: {}", self.name))
.with_inner_size(winit::dpi::LogicalSize::new(width, height)),
)
.expect("create window"),
);
let surface = instance
.create_surface(window.clone())
.expect("create surface");
let adapter = gpu::create_adapter(&instance, Some(&surface));
let (device, queue) = gpu::create_device(&adapter);
let surface_caps = surface.get_capabilities(&adapter);
let surface_format = surface_caps
.formats
.iter()
.find(|f| !f.is_srgb())
.copied()
.unwrap_or(surface_caps.formats[0]);
let mut client = gpu::create_tsv_client(&device);
client.find_image(&self.name, true).expect("find tsv image");
let fence = gpu::create_fence(&client);
let canvas = device.create_texture(&wgpu::TextureDescriptor {
label: Some("tsv_canvas"),
size: wgpu::Extent3d {
width,
height,
depth_or_array_layers: 1,
},
mip_level_count: 1,
sample_count: 1,
dimension: wgpu::TextureDimension::D2,
format: wgpu::TextureFormat::Rgba8Unorm,
usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
view_formats: &[],
});
let canvas_view = canvas.create_view(&Default::default());
let preview = PreviewWindow::new(
&device,
window,
surface,
surface_format,
&canvas_view,
width,
height,
self.scale_mode,
);
self.state = Some(AppState {
device,
queue,
preview,
client,
fence,
canvas,
name: self.name.clone(),
});
}
fn window_event(
&mut self,
event_loop: &winit::event_loop::ActiveEventLoop,
_window_id: winit::window::WindowId,
event: WindowEvent,
) {
let state = self.state.as_mut().expect("gpu not initialized");
match event {
WindowEvent::CloseRequested => event_loop.exit(),
WindowEvent::KeyboardInput {
event:
KeyEvent {
logical_key,
state: ElementState::Pressed,
..
},
..
} => match logical_key {
Key::Named(NamedKey::Escape) => event_loop.exit(),
Key::Character(ref c) if c.as_str() == "c" => {
state.preview.scale_mode = state.preview.scale_mode.cycle();
log::info!("scale mode: {:?}", state.preview.scale_mode);
}
_ => {}
},
WindowEvent::Resized(size) => {
state.preview.resize(&state.device, size.width, size.height);
}
WindowEvent::RedrawRequested => {
// Receive the latest frame from texture-share-vk.
// Use UNDEFINED as orig_layout: the image content is fully overwritten by recv,
// and wgpu may not have transitioned it yet.
let canvas_image = unsafe { gpu::raw_image(&state.canvas) };
match state.client.recv_image(
&state.name,
canvas_image,
vk::ImageLayout::UNDEFINED,
vk::ImageLayout::SHADER_READ_ONLY_OPTIMAL,
state.fence,
) {
Err(e) => log::warn!("recv_image error: {e}"),
Ok(Some(())) => log::debug!("got frame"),
Ok(None) => {}
}
state.preview.draw(&state.device, &state.queue);
}
_ => {}
}
}
fn about_to_wait(&mut self, _event_loop: &winit::event_loop::ActiveEventLoop) {
if let Some(ref state) = self.state {
state.preview.window().request_redraw();
}
}
}
impl Drop for AppState {
fn drop(&mut self) {
gpu::destroy_fence(&self.client, self.fence);
}
}
fn main() {
env_logger::init();
let mut args = std::env::args().skip(1);
let mut scale_mode = ScaleMode::Contain;
let mut name = "wgsl-view".to_string();
while let Some(arg) = args.next() {
match arg.as_str() {
"--name" => name = args.next().expect("--name VALUE"),
"--scale" => {
scale_mode = match args.next().expect("--scale VALUE").as_str() {
"contain" => ScaleMode::Contain,
"cover" => ScaleMode::Cover,
"center" => ScaleMode::Center,
"natural" => ScaleMode::Natural,
s => panic!("unknown scale mode: {s}"),
}
}
other => panic!("unknown argument: {other}"),
}
}
let event_loop = EventLoop::new().expect("create event loop");
event_loop.set_control_flow(winit::event_loop::ControlFlow::Poll);
let mut app = App {
scale_mode,
name,
state: None,
};
event_loop.run_app(&mut app).expect("run");
}
|
