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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
#[cfg(target_pointer_width = "16")]
compile_error!("bevy_render cannot compile for a 16-bit platform.");
extern crate core;
pub mod camera;
pub mod color;
pub mod extract_component;
mod extract_param;
pub mod extract_resource;
pub mod globals;
pub mod mesh;
pub mod pipelined_rendering;
pub mod primitives;
pub mod render_asset;
pub mod render_graph;
pub mod render_phase;
pub mod render_resource;
pub mod renderer;
pub mod settings;
mod spatial_bundle;
pub mod texture;
pub mod view;
use bevy_hierarchy::ValidParentCheckPlugin;
pub use extract_param::Extract;
pub mod prelude {
#[doc(hidden)]
pub use crate::{
camera::{Camera, OrthographicProjection, PerspectiveProjection, Projection},
color::Color,
mesh::{shape, Mesh},
render_resource::Shader,
spatial_bundle::SpatialBundle,
texture::{Image, ImagePlugin},
view::{ComputedVisibility, Msaa, Visibility, VisibilityBundle},
ExtractSchedule,
};
}
use bevy_window::{PrimaryWindow, RawHandleWrapper};
use globals::GlobalsPlugin;
pub use once_cell;
use crate::{
camera::CameraPlugin,
mesh::MeshPlugin,
render_resource::{PipelineCache, Shader, ShaderLoader},
renderer::{render_system, RenderInstance},
settings::WgpuSettings,
view::{ViewPlugin, WindowRenderPlugin},
};
use bevy_app::{App, AppLabel, CoreSchedule, Plugin, SubApp};
use bevy_asset::{AddAsset, AssetServer};
use bevy_ecs::{prelude::*, schedule::ScheduleLabel, system::SystemState};
use bevy_utils::tracing::debug;
use std::ops::{Deref, DerefMut};
#[derive(Default)]
pub struct RenderPlugin {
pub wgpu_settings: WgpuSettings,
}
#[derive(Debug, Hash, PartialEq, Eq, Clone, SystemSet)]
pub enum RenderSet {
ExtractCommands,
Prepare,
PrepareFlush,
Queue,
QueueFlush,
PhaseSort,
PhaseSortFlush,
Render,
RenderFlush,
Cleanup,
CleanupFlush,
}
impl RenderSet {
pub fn base_schedule() -> Schedule {
use RenderSet::*;
let mut schedule = Schedule::new();
schedule.add_system(apply_system_buffers.in_set(PrepareFlush));
schedule.add_system(apply_system_buffers.in_set(QueueFlush));
schedule.add_system(apply_system_buffers.in_set(PhaseSortFlush));
schedule.add_system(apply_system_buffers.in_set(RenderFlush));
schedule.add_system(apply_system_buffers.in_set(CleanupFlush));
schedule.configure_set(ExtractCommands.before(Prepare));
schedule.configure_set(Prepare.after(ExtractCommands).before(PrepareFlush));
schedule.configure_set(Queue.after(PrepareFlush).before(QueueFlush));
schedule.configure_set(PhaseSort.after(QueueFlush).before(PhaseSortFlush));
schedule.configure_set(Render.after(PhaseSortFlush).before(RenderFlush));
schedule.configure_set(Cleanup.after(RenderFlush).before(CleanupFlush));
schedule
}
}
#[derive(ScheduleLabel, PartialEq, Eq, Debug, Clone, Hash)]
pub struct ExtractSchedule;
#[derive(Resource, Default)]
pub struct MainWorld(World);
impl Deref for MainWorld {
type Target = World;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for MainWorld {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
pub mod main_graph {
pub mod node {
pub const CAMERA_DRIVER: &str = "camera_driver";
}
}
#[derive(Debug, Clone, Copy, Hash, PartialEq, Eq, AppLabel)]
pub struct RenderApp;
impl Plugin for RenderPlugin {
fn build(&self, app: &mut App) {
app.add_asset::<Shader>()
.add_debug_asset::<Shader>()
.init_asset_loader::<ShaderLoader>()
.init_debug_asset_loader::<ShaderLoader>();
let mut system_state: SystemState<Query<&RawHandleWrapper, With<PrimaryWindow>>> =
SystemState::new(&mut app.world);
let primary_window = system_state.get(&app.world);
if let Some(backends) = self.wgpu_settings.backends {
let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
backends,
dx12_shader_compiler: self.wgpu_settings.dx12_shader_compiler.clone(),
});
let surface = primary_window.get_single().ok().map(|wrapper| unsafe {
let handle = wrapper.get_handle();
instance
.create_surface(&handle)
.expect("Failed to create wgpu surface")
});
let request_adapter_options = wgpu::RequestAdapterOptions {
power_preference: self.wgpu_settings.power_preference,
compatible_surface: surface.as_ref(),
..Default::default()
};
let (device, queue, adapter_info, render_adapter) =
futures_lite::future::block_on(renderer::initialize_renderer(
&instance,
&self.wgpu_settings,
&request_adapter_options,
));
debug!("Configured wgpu adapter Limits: {:#?}", device.limits());
debug!("Configured wgpu adapter Features: {:#?}", device.features());
app.insert_resource(device.clone())
.insert_resource(queue.clone())
.insert_resource(adapter_info.clone())
.insert_resource(render_adapter.clone())
.init_resource::<ScratchMainWorld>();
let pipeline_cache = PipelineCache::new(device.clone());
let asset_server = app.world.resource::<AssetServer>().clone();
let mut render_app = App::empty();
render_app.add_simple_outer_schedule();
let mut render_schedule = RenderSet::base_schedule();
render_app.edit_schedule(ExtractSchedule, |schedule| {
schedule
.set_apply_final_buffers(false)
.add_system(PipelineCache::extract_shaders);
});
render_schedule.add_system(apply_extract_commands.in_set(RenderSet::ExtractCommands));
render_schedule.add_system(
PipelineCache::process_pipeline_queue_system
.before(render_system)
.in_set(RenderSet::Render),
);
render_schedule.add_system(render_system.in_set(RenderSet::Render));
render_schedule.add_system(World::clear_entities.in_set(RenderSet::Cleanup));
render_app
.add_schedule(CoreSchedule::Main, render_schedule)
.init_resource::<render_graph::RenderGraph>()
.insert_resource(RenderInstance(instance))
.insert_resource(device)
.insert_resource(queue)
.insert_resource(render_adapter)
.insert_resource(adapter_info)
.insert_resource(pipeline_cache)
.insert_resource(asset_server);
let (sender, receiver) = bevy_time::create_time_channels();
app.insert_resource(receiver);
render_app.insert_resource(sender);
app.insert_sub_app(RenderApp, SubApp::new(render_app, move |main_world, render_app| {
#[cfg(feature = "trace")]
let _render_span = bevy_utils::tracing::info_span!("extract main app to render subapp").entered();
{
#[cfg(feature = "trace")]
let _stage_span =
bevy_utils::tracing::info_span!("reserve_and_flush")
.entered();
let total_count = main_world.entities().total_count();
assert_eq!(
render_app.world.entities().len(),
0,
"An entity was spawned after the entity list was cleared last frame and before the extract schedule began. This is not supported",
);
unsafe {
render_app
.world
.entities_mut()
.flush_and_reserve_invalid_assuming_no_entities(total_count);
}
}
extract(main_world, render_app);
}));
}
app.add_plugin(ValidParentCheckPlugin::<view::ComputedVisibility>::default())
.add_plugin(WindowRenderPlugin)
.add_plugin(CameraPlugin)
.add_plugin(ViewPlugin)
.add_plugin(MeshPlugin)
.add_plugin(GlobalsPlugin);
app.register_type::<color::Color>()
.register_type::<primitives::Aabb>()
.register_type::<primitives::CascadesFrusta>()
.register_type::<primitives::CubemapFrusta>()
.register_type::<primitives::Frustum>();
}
}
#[derive(Resource, Default)]
struct ScratchMainWorld(World);
fn extract(main_world: &mut World, render_app: &mut App) {
let scratch_world = main_world.remove_resource::<ScratchMainWorld>().unwrap();
let inserted_world = std::mem::replace(main_world, scratch_world.0);
render_app.world.insert_resource(MainWorld(inserted_world));
render_app.world.run_schedule(ExtractSchedule);
let inserted_world = render_app.world.remove_resource::<MainWorld>().unwrap();
let scratch_world = std::mem::replace(main_world, inserted_world.0);
main_world.insert_resource(ScratchMainWorld(scratch_world));
}
fn apply_extract_commands(render_world: &mut World) {
render_world.resource_scope(|render_world, mut schedules: Mut<Schedules>| {
schedules
.get_mut(&ExtractSchedule)
.unwrap()
.apply_system_buffers(render_world);
});
}