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
|
use stockton_levels::prelude::HasTextures;
use super::{
block::TexturesBlock,
loader::{BlockRef, LoaderRequest, TextureLoader, TextureLoaderRemains, NUM_SIMULTANEOUS_CMDS},
resolver::TextureResolver,
LoadableImage,
};
use crate::error::LockPoisoned;
use crate::types::*;
use std::{
array::IntoIter,
collections::HashMap,
iter::empty,
marker::PhantomData,
mem::ManuallyDrop,
sync::{
mpsc::{channel, Receiver, Sender},
Arc, RwLock, RwLockReadGuard,
},
thread::JoinHandle,
};
use anyhow::{Context, Result};
use hal::{
pso::{DescriptorSetLayoutBinding, DescriptorType, ImageDescriptorType, ShaderStageFlags},
queue::family::QueueFamilyId,
};
use log::debug;
/// The number of textures in one 'block'
/// The textures of the loaded file are divided into blocks of this size.
/// Whenever a texture is needed, the whole block its in is loaded.
pub const BLOCK_SIZE: usize = 8;
pub struct TextureRepo<'a> {
joiner: ManuallyDrop<JoinHandle<Result<TextureLoaderRemains>>>,
ds_layout: Arc<RwLock<DescriptorSetLayoutT>>,
req_send: Sender<LoaderRequest>,
resp_recv: Receiver<TexturesBlock<DynamicBlock>>,
blocks: HashMap<BlockRef, Option<TexturesBlock<DynamicBlock>>>,
_a: PhantomData<&'a ()>,
}
impl<'a> TextureRepo<'a> {
pub fn queue_family_filter(family: &&QueueFamilyT) -> bool {
family.queue_type().supports_transfer() && family.max_queues() >= NUM_SIMULTANEOUS_CMDS
}
pub fn new<
T: 'static + HasTextures + Send + Sync,
R: 'static + TextureResolver<I> + Send + Sync,
I: 'static + LoadableImage + Send,
>(
device_lock: Arc<RwLock<DeviceT>>,
family: QueueFamilyId,
queue: Arc<RwLock<QueueT>>,
adapter: &Adapter,
texs_lock: Arc<RwLock<T>>,
resolver: R,
) -> Result<Self> {
// Create Channels
let (req_send, req_recv) = channel();
let (resp_send, resp_recv) = channel();
let device = device_lock
.write()
.map_err(|_| LockPoisoned::Device)
.context("Error getting device lock")?;
// Create descriptor set layout
let ds_lock = Arc::new(RwLock::new(
unsafe {
device.create_descriptor_set_layout(
IntoIter::new([
DescriptorSetLayoutBinding {
binding: 0,
ty: DescriptorType::Image {
ty: ImageDescriptorType::Sampled {
with_sampler: false,
},
},
count: BLOCK_SIZE,
stage_flags: ShaderStageFlags::FRAGMENT,
immutable_samplers: false,
},
DescriptorSetLayoutBinding {
binding: 1,
ty: DescriptorType::Sampler,
count: BLOCK_SIZE,
stage_flags: ShaderStageFlags::FRAGMENT,
immutable_samplers: false,
},
]),
empty(),
)
}
.context("Error creating descriptor set layout")?,
));
debug!("Created descriptor set layout {:?}", ds_lock);
drop(device);
let joiner = {
let loader = TextureLoader::new(
adapter,
device_lock.clone(),
family,
queue,
ds_lock.clone(),
req_recv,
resp_send,
texs_lock,
resolver,
)?;
std::thread::spawn(move || loader.loop_until_exit())
};
Ok(TextureRepo {
joiner: ManuallyDrop::new(joiner),
ds_layout: ds_lock,
blocks: HashMap::new(),
req_send,
resp_recv,
_a: PhantomData::default(),
})
}
pub fn get_ds_layout(&self) -> RwLockReadGuard<DescriptorSetLayoutT> {
self.ds_layout.read().unwrap()
}
pub fn queue_load(&mut self, block_id: BlockRef) -> Result<()> {
if self.blocks.contains_key(&block_id) {
return Ok(());
}
self.force_queue_load(block_id)
}
pub fn force_queue_load(&mut self, block_id: BlockRef) -> Result<()> {
self.req_send
.send(LoaderRequest::Load(block_id))
.context("Error queuing texture block load")?;
self.blocks.insert(block_id, None);
Ok(())
}
pub fn attempt_get_descriptor_set(&mut self, block_id: BlockRef) -> Option<&DescriptorSetT> {
self.blocks
.get(&block_id)
.and_then(|opt| opt.as_ref().map(|z| z.descriptor_set.raw()))
}
pub fn process_responses(&mut self) {
let resp_iter: Vec<_> = self.resp_recv.try_iter().collect();
for resp in resp_iter {
debug!("Got block {:?} back from loader", resp.id);
self.blocks.insert(resp.id, Some(resp));
}
}
pub fn deactivate(mut self, device_lock: &mut Arc<RwLock<DeviceT>>) {
unsafe {
use std::ptr::read;
// Join the loader thread
self.req_send.send(LoaderRequest::End).unwrap();
let mut remains = read(&*self.joiner).join().unwrap().unwrap();
// Process any ones that just got done loading
self.process_responses();
// Only now can we lock device without deadlocking
let mut device = device_lock.write().unwrap();
// Return all the texture memory and descriptors.
for (i, v) in self.blocks.drain() {
debug!("Deactivating blockref {:?}", i);
if let Some(block) = v {
block.deactivate(
&mut device,
&mut *remains.tex_allocator,
&mut remains.descriptor_allocator,
);
}
}
debug!("Deactivated all blocks");
// Dispose of both allocators
read(&*remains.tex_allocator).dispose();
read(&*remains.descriptor_allocator).dispose(&device);
debug!("Disposed of allocators");
}
}
}
|
