migrations/egui
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Add epaint::util::hash function for hashing a value

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This commit is contained in:
Emil Ernerfeldt
2021-09-25 11:22:34 +02:00
parent 976260c2bd
commit ba0e3780a1
5 changed files with 19 additions and 29 deletions
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17
epaint/src/text/fonts.rs
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@@ -1,8 +1,4 @@
use std::{
collections::BTreeMap,
hash::{Hash, Hasher},
sync::Arc,
};
use std::{collections::BTreeMap, sync::Arc};
use crate::{
mutex::Mutex,
@@ -261,10 +257,7 @@ impl Fonts {
let mut atlas = atlas.lock();
let texture = atlas.texture_mut();
// Make sure we seed the texture version with something unique based on the default characters:
use std::collections::hash_map::DefaultHasher;
let mut hasher = DefaultHasher::default();
texture.pixels.hash(&mut hasher);
texture.version = hasher.finish();
texture.version = crate::util::hash(&texture.pixels);
}
Self {
@@ -412,11 +405,7 @@ struct GalleyCache {
impl GalleyCache {
fn layout(&mut self, fonts: &Fonts, job: LayoutJob) -> Arc<Galley> {
let hash = {
let mut hasher = ahash::AHasher::new_with_keys(123, 456); // TODO: even faster hasher?
job.hash(&mut hasher);
hasher.finish()
};
let hash = crate::util::hash_with(&job, ahash::AHasher::new_with_keys(123, 456)); // TODO: even faster hasher?
match self.cache.entry(hash) {
std::collections::hash_map::Entry::Occupied(entry) => {