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Keep text atlases alive during temporary empty uploads

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Héctor Ramón Jiménez 2024-04-30 23:51:00 +02:00
parent b276a603a1
commit 7e2d0dc931
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GPG key ID: 7CC46565708259A7
1 changed files with 44 additions and 32 deletions
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26
wgpu/src/text.rs
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@ -61,6 +61,10 @@ impl Cache {
}
pub fn update(&mut self, text: Vec<Text>) {
if self.text.is_empty() && text.is_empty() {
return;
}
self.text = Rc::from(text);
self.version += 1;
}
@ -139,11 +143,11 @@ impl Storage {
hash_map::Entry::Occupied(entry) => {
let upload = entry.into_mut();
if !cache.text.is_empty()
&& (upload.version != cache.version
if upload.version != cache.version
|| upload.group_version != group.version
|| upload.transformation != new_transformation)
|| upload.transformation != new_transformation
{
if !cache.text.is_empty() {
let _ = prepare(
device,
queue,
@ -156,6 +160,7 @@ impl Storage {
new_transformation,
target_size,
);
}
// Only trim if glyphs have changed
group.should_trim =
@ -179,6 +184,7 @@ impl Storage {
let mut buffer_cache = BufferCache::new();
if !cache.text.is_empty() {
let _ = prepare(
device,
queue,
@ -191,6 +197,7 @@ impl Storage {
new_transformation,
target_size,
);
}
let _ = entry.insert(Upload {
renderer,
@ -202,6 +209,8 @@ impl Storage {
_atlas: Rc::downgrade(&group.handle),
});
group.should_trim = cache.group.is_singleton();
log::debug!(
"New text upload: {} (total: {})",
cache.id.0,
@ -224,10 +233,8 @@ impl Storage {
return false;
}
if id.is_singleton() || group.should_trim {
log::debug!(
"Trimming text atlas: {id:?} (uploads: {active_uploads})"
);
if group.should_trim {
log::trace!("Trimming text atlas: {id:?}");
group.atlas.trim();
group.should_trim = false;
@ -236,6 +243,11 @@ impl Storage {
// when the atlas may be shared by multiple
// uploads.
if !id.is_singleton() {
log::debug!(
"Invalidating text atlas: {id:?} \
(uploads: {active_uploads})"
);
group.version += 1;
}
}