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Fixed too eager lock usage, fixed O(N²) buffer range collapse

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This commit is contained in:
Andreas Reich 2021-01-30 22:24:11 +01:00
parent a8460b438c
commit 4f5acba5fb
1 changed files with 17 additions and 4 deletions
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21
wgpu-core/src/device/queue.rs
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@ -192,7 +192,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
let device = device_guard
.get_mut(queue_id)
.map_err(|_| DeviceError::Invalid)?;
let (mut buffer_guard, _) = hub.buffers.write(&mut token);
let (buffer_guard, _) = hub.buffers.read(&mut token);
#[cfg(feature = "trace")]
if let Some(ref trace) = device.trace {
@ -274,6 +274,9 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
// Ensure the overwritten bytes are marked as initialized so they don't need to be nulled prior to mapping or binding.
{
drop(buffer_guard);
let (mut buffer_guard, _) = hub.buffers.write(&mut token);
let dst = buffer_guard.get_mut(buffer_id).unwrap();
dst.initialization_status
.clear(buffer_offset..(buffer_offset + data_size));
@ -482,7 +485,6 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
let mut required_buffer_inits = {
let (command_buffer_guard, mut token) = hub.command_buffers.read(&mut token);
let (mut buffer_guard, _) = hub.buffers.write(&mut token);
let mut required_buffer_inits: FastHashMap<
id::BufferId,
@ -494,6 +496,12 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
.get(cmb_id)
.map_err(|_| QueueSubmitError::InvalidCommandBuffer(cmb_id))?;
if cmdbuf.buffer_memory_init_actions.len() == 0 {
continue;
}
let (mut buffer_guard, _) = hub.buffers.write(&mut token);
for buffer_use in cmdbuf.buffer_memory_init_actions.iter() {
let buffer = buffer_guard
.get_mut(buffer_use.id)
@ -543,7 +551,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
assert!(ranges[i - 1].end <= ranges[i].start); // The memory init tracker made sure of this!
if ranges[i].start == ranges[i - 1].end {
ranges[i - 1].end = ranges[i].end;
ranges.remove(i);
ranges.swap_remove(i); // Ordering not important at this point
}
}
@ -563,12 +571,17 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
);
}
for range in ranges {
let size = range.end - range.start;
assert!(range.start % 4 == 0, "Buffer {:?} has an uninitialized range with a start not aligned to 4 (start was {})", buffer, range.start);
assert!(size % 4 == 0, "Buffer {:?} has an uninitialized range with a size not aligned to 4 (size was {})", buffer, size);
unsafe {
pending_writes_cmd_buf.fill_buffer(
buffer_raw,
hal::buffer::SubRange {
offset: range.start,
size: Some(range.end - range.start),
size: Some(size),
},
0,
);