-
Notifications
You must be signed in to change notification settings - Fork 877
/
mod.rs
179 lines (165 loc) · 6.78 KB
/
mod.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
use std::borrow::Cow;
use winit::{
event::{Event, WindowEvent},
event_loop::EventLoop,
window::Window,
};
async fn run(event_loop: EventLoop<()>, window: Window) {
let mut size = window.inner_size();
size.width = size.width.max(1);
size.height = size.height.max(1);
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,
// Request an adapter which can render to our surface
compatible_surface: Some(&surface),
})
.await
.expect("Failed to find an appropriate adapter");
// Create the logical device and command queue
let (device, queue) = adapter
.request_device(
&wgpu::DeviceDescriptor {
label: None,
required_features: wgpu::Features::empty(),
// Make sure we use the texture resolution limits from the adapter, so we can support images the size of the swapchain.
required_limits: wgpu::Limits::downlevel_webgl2_defaults()
.using_resolution(adapter.limits()),
memory_hints: wgpu::MemoryHints::MemoryUsage,
},
None,
)
.await
.expect("Failed to create device");
// Load the shaders from disk
let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
label: None,
source: wgpu::ShaderSource::Wgsl(Cow::Borrowed(include_str!("shader.wgsl"))),
});
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: Some("vs_main"),
buffers: &[],
compilation_options: Default::default(),
},
fragment: Some(wgpu::FragmentState {
module: &shader,
entry_point: Some("fs_main"),
compilation_options: Default::default(),
targets: &[Some(swapchain_format.into())],
}),
primitive: wgpu::PrimitiveState::default(),
depth_stencil: None,
multisample: wgpu::MultisampleState::default(),
multiview: None,
cache: None,
});
let mut config = surface
.get_default_config(&adapter, size.width, size.height)
.unwrap();
surface.configure(&device, &config);
let window = &window;
event_loop
.run(move |event, target| {
// Have the closure take ownership of the resources.
// `event_loop.run` never returns, therefore we must do this to ensure
// the resources are properly cleaned up.
let _ = (&instance, &adapter, &shader, &pipeline_layout);
if let Event::WindowEvent {
window_id: _,
event,
} = event
{
match event {
WindowEvent::Resized(new_size) => {
// Reconfigure the surface with the new size
config.width = new_size.width.max(1);
config.height = new_size.height.max(1);
surface.configure(&device, &config);
// On macos the window needs to be redrawn manually after resizing
window.request_redraw();
}
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::GREEN),
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();
}
WindowEvent::CloseRequested => target.exit(),
_ => {}
};
}
})
.unwrap();
}
pub fn main() {
let event_loop = EventLoop::new().unwrap();
#[allow(unused_mut)]
let mut builder = winit::window::WindowBuilder::new();
#[cfg(target_arch = "wasm32")]
{
use wasm_bindgen::JsCast;
use winit::platform::web::WindowBuilderExtWebSys;
let canvas = web_sys::window()
.unwrap()
.document()
.unwrap()
.get_element_by_id("canvas")
.unwrap()
.dyn_into::<web_sys::HtmlCanvasElement>()
.unwrap();
builder = builder.with_canvas(Some(canvas));
}
let window = builder.build(&event_loop).unwrap();
#[cfg(not(target_arch = "wasm32"))]
{
env_logger::init();
pollster::block_on(run(event_loop, window));
}
#[cfg(target_arch = "wasm32")]
{
std::panic::set_hook(Box::new(console_error_panic_hook::hook));
console_log::init().expect("could not initialize logger");
wasm_bindgen_futures::spawn_local(run(event_loop, window));
}
}