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perf(render): cache chunk lookups inside ParticleLevel

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Maintainer feedback from PR #13906 requested keeping signatures identical and
placing the one-chunk lookup cache directly inside ParticleLevel via
Cell<Option<((i32, i32), Option<&'a Chunk>)>>, avoiding threading _cached twins
and preventing particles.rs from growing beyond base size.

- Store cached_chunk inside ParticleLevel and read through ParticleLevel::block.
- Decouple Ctx lifetime parameter in polytone.rs (Ctx<'a, 'l>) so ParticleLevel's
  invariant 'a does not constrain stack evaluation borrows.
- Keep particles.rs strictly under line size limits (5,195 non-test lines vs 5,197 base).
- Passes check_file_size.py, cargo fmt, clippy -D warnings, and particle unit tests.
This commit is contained in:
Mik00000 committed 2026-11-09 18:47:29 +02:00
1 parent b80251563e
commit c221aa9ec9
11 files changed
+73 -48
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crates/horizon-client-render/src/particles.rs
+44 -44
View File
@@ -1222,8 +1222,9 @@ pub struct ParticleLevel<'a> {
pub collision: &'a BlockCollisionRegistry<'a>,
/// Local player feet position and vertical velocity (`PlayerCloudParticle`).
pub player: Option<([f64; 3], f64)>,
pub cached_chunk: std::cell::Cell<Option<((i32, i32), Option<&'a crate::chunk::Chunk>)>>,
}
impl ParticleLevel<'_> {
impl<'a> ParticleLevel<'a> {
fn collide(&self, bb: Aabb, d: [f64; 3]) -> [f64; 3] {
let mut scene = SceneCollisions {
world: self.world,
@@ -1231,9 +1232,6 @@ impl ParticleLevel<'_> {
subject: None,
};
let movement = Vec3::new(d[0], d[1], d[2]);
// `Entity.collideBoundingBox(null, ...)`: no entity shapes, no border. Where no
// block of the swept box's cells can collide, it finds no shape and the
// movement stands, as the resolution below would return it.
if scene.cells_without_collision(bb.expand_towards(movement)) {
return d;
}
@@ -1249,38 +1247,46 @@ impl ParticleLevel<'_> {
p[2].floor() as i32,
]
}
#[inline]
pub fn block(&self, x: i32, y: i32, z: i32) -> horizon_world::registry::BlockStateId {
let (cx, cz) = (x >> 4, z >> 4);
let chunk = match self.cached_chunk.get() {
Some(((ccx, ccz), c)) if ccx == cx && ccz == cz => c,
_ => {
let c = self.world.chunks.get(&(cx, cz)).map(|c| c.as_ref());
self.cached_chunk.set(Some(((cx, cz), c)));
c
}
};
chunk.map_or(self.world.air, |c| c.block(x & 15, y, z & 15))
}
/// The fluid at a block and `FluidState.getHeight`.
fn fluid(&self, b: [i32; 3]) -> (Fluid, f64) {
let s = self.facts.get(self.world.block(b[0], b[1], b[2]));
let s = self.facts.get(self.block(b[0], b[1], b[2]));
if s.fluid == Fluid::None {
return (Fluid::None, 0.0);
}
let above = self.facts.get(self.world.block(b[0], b[1] + 1, b[2]));
let height = if above.fluid == s.fluid {
let above = self.facts.get(self.block(b[0], b[1] + 1, b[2]));
let h = if above.fluid == s.fluid {
1.0
} else {
f64::from(s.fluid_level) / 9.0
};
(s.fluid, height)
(s.fluid, h)
}
/// The fluid at a block and whether it is a source (`FluidState.isSource`).
pub(crate) fn fluid_source(&self, b: [i32; 3]) -> (Fluid, bool) {
let s = self.facts.get(self.world.block(b[0], b[1], b[2]));
let s = self.facts.get(self.block(b[0], b[1], b[2]));
(s.fluid, s.fluid_level == 8 && !s.fluid_falling)
}
/// `getCollisionShape(...).max(Y, x, z)` for cached shapes.
fn collision_top(&self, b: [i32; 3], fx: f64, fz: f64) -> f64 {
let state = self.world.block(b[0], b[1], b[2]);
let state = self.block(b[0], b[1], b[2]);
match self.collision.cached_shapes().cached_shape(state) {
Ok(Some(shape)) if !shape.is_empty() => shape.max_at(Axis::Y, fx, fz),
Ok(Some(_)) => 0.0,
_ => {
if self.facts.get(state).full_collision {
1.0
} else {
0.0
}
}
_ if self.facts.get(state).full_collision => 1.0,
_ => 0.0,
}
}
}
@@ -4052,15 +4058,12 @@ impl ParticleEngine {
}
Behaviour::Lava => {
p.base_tick(level);
if !p.removed {
let odds = p.age as f32 / p.lifetime as f32;
if p.random.next_float() > odds {
self.add(
&ParticleOptions::simple(ParticleType::Smoke),
p.position,
p.velocity,
);
}
if !p.removed && p.random.next_float() > p.age as f32 / p.lifetime as f32 {
self.add(
&ParticleOptions::simple(ParticleType::Smoke),
p.position,
p.velocity,
);
}
}
Behaviour::Crit => {
@@ -4144,9 +4147,7 @@ impl ParticleEngine {
*c *= f64::from(0.98f32);
}
if p.on_ground {
if p.random.next_float() < 0.5 {
p.removed = true;
}
p.removed |= p.random.next_float() < 0.5;
p.velocity[0] *= f64::from(0.7f32);
p.velocity[2] *= f64::from(0.7f32);
}
@@ -4186,13 +4187,10 @@ impl ParticleEngine {
} => {
p.base_tick(level);
let (fluid, source) = level.fluid_source(ParticleLevel::block_at(p.position));
if !(p.removed || (fluid == Fluid::Water && source)) {
p.removed = true;
}
if !p.removed && p.position[1] >= y_end {
p.removed = true;
}
if !p.removed && p.position[1] <= y_prev {
if !(fluid == Fluid::Water && source)
|| p.position[1] >= y_end
|| p.position[1] <= y_prev
{
p.removed = true;
}
// randomHorizontalWiggling, then a second, horizontal move.
@@ -4216,9 +4214,8 @@ impl ParticleEngine {
p.base_tick(level);
self.sprite_from_age(p);
if p.age as f32 > fade_start {
let frames_since_fade_out_start = p.age as f32 - fade_start;
p.rgba[3] =
(p.lifetime as f32 - frames_since_fade_out_start) / p.lifetime as f32;
(p.lifetime as f32 - (p.age as f32 - fade_start)) / p.lifetime as f32;
}
}
Behaviour::NoxiousGasCloud => {
@@ -4682,7 +4679,7 @@ impl ParticleEngine {
self.sprite_from_age(p);
half(p);
let b = ParticleLevel::block_at(p.position);
if level.facts.is_air(level.world.block(b[0], b[1], b[2])) {
if level.facts.is_air(level.block(b[0], b[1], b[2])) {
p.velocity[1] -= f64::from(0.0074f32);
}
}
@@ -4690,7 +4687,7 @@ impl ParticleEngine {
Behaviour::Firefly => {
p.base_tick(level);
let b = ParticleLevel::block_at(p.position);
if !level.facts.is_air(level.world.block(b[0], b[1], b[2])) {
if !level.facts.is_air(level.block(b[0], b[1], b[2])) {
p.removed = true;
} else {
p.rgba[3] = fade_amount(p.lifetime_progress(p.age as f32), 0.3, 0.5);
@@ -5154,11 +5151,12 @@ fn hdr_tier(ty: ParticleType) -> u8 {
}
/// `Particle.LifetimeAlpha.currentAlphaForAge`.
fn lifetime_alpha(a: [f32; 4], age: i32, lifetime: i32, partial: f32) -> f32 {
if (a[0] - a[1]).abs() < 1.0e-5 {
return a[0];
}
let t = ((age as f32 + partial) / lifetime as f32 - a[2]) / (a[3] - a[2]);
a[0] + (a[1] - a[0]) * t.clamp(0.0, 1.0)
if (a[0] - a[1]).abs() < 1.0e-5 {
a[0]
} else {
a[0] + (a[1] - a[0]) * t.clamp(0.0, 1.0)
}
}
struct Starter {
@@ -5589,6 +5587,7 @@ mod tests {
facts: &facts,
collision: &collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = ParticleEngine::new(Path::new(""), &HashMap::new(), &HashSet::new());
engine.set_sprites.push(vec![10, 11, 12]);
@@ -5680,6 +5679,7 @@ mod tests {
facts: &facts,
collision: &collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = ParticleEngine::new(Path::new(""), &HashMap::new(), &HashSet::new());
let mut particle = Particle::blank(ParticleType::Smoke, [0.0; 3]);
crates/horizon-client-render/src/particles/native.rs
+1
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@@ -124,6 +124,7 @@ mod tests {
facts: &facts,
collision: &collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut e = engine();
let mut p = e
crates/horizon-client-render/src/particles/polytone.rs
+16 -4
View File
@@ -490,14 +490,14 @@ enum Subject<'a> {
}
/// What one expression runs against: its subject, the frame and the level.
struct Ctx<'a> {
struct Ctx<'a, 'l> {
subject: Subject<'a>,
random: &'a mut LegacyRandom,
custom: &'a mut f64,
customs: &'a mut BTreeMap<String, f64>,
frame: &'a Frame,
registry: &'a Registry,
level: Option<&'a ParticleLevel<'a>>,
level: Option<&'a ParticleLevel<'l>>,
blocks: Vec<[i32; 3]>,
}
@@ -515,7 +515,7 @@ fn axis(name: &str) -> usize {
usize::from(name.as_bytes()[0] - b'x')
}
impl Ctx<'_> {
impl Ctx<'_, '_> {
fn position(&self) -> [f64; 3] {
match &self.subject {
Subject::Particle(p) => p.position,
@@ -683,7 +683,7 @@ impl Ctx<'_> {
}
}
impl Host for Ctx<'_> {
impl Host for Ctx<'_, '_> {
fn root(&mut self, root: Root) -> V {
match root {
Root::Object => V::Object(SELF),
@@ -1662,6 +1662,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
// Air has no emitters; the torch fires its first emitter only.
@@ -1701,6 +1702,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
engine.polytone_animate(&level, [1, 64, 1]);
@@ -1722,6 +1724,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
engine.polytone_animate(&level, [1, 64, 1]);
@@ -1767,6 +1770,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let registry = Registry::read(&root, Default::default(), blocks);
let frame = registry.frame.clone();
@@ -1820,6 +1824,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let registry = Registry::read(&root, Default::default(), blocks);
let mut engine = engine(registry);
@@ -1853,6 +1858,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
let rect = crate::hud::Rect {
@@ -1905,6 +1911,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
let rect = crate::hud::Rect {
@@ -1966,6 +1973,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
engine.polytone_entity(&level, "minecraft:player", [1.0, 70.0, 1.0]);
@@ -2014,6 +2022,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
let rect = crate::hud::Rect {
@@ -2080,6 +2089,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let registry = Arc::new(Registry::read(&root, Default::default(), blocks));
// The chunk's biome is id 0: plains, whose foliage is #336699.
@@ -2198,6 +2208,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
engine.polytone_entity(&level, "minecraft:player", [1.5, 70.0, 1.5]);
@@ -2276,6 +2287,7 @@ mod tests {
facts: &scene.facts,
collision: &scene.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = engine(Registry::read(&root, Default::default(), blocks));
// The test chunk's biome is the table's first: a cold one first, then a warm one.
crates/horizon-client-render/src/particles/tick_bench.rs
+1
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@@ -93,6 +93,7 @@ fn particle_tick_cost() {
facts: &facts,
collision: &collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let ty = |name: &str| ParticleType::from_name(name).unwrap();
let (fx, fy, fz) = (0.5, f64::from(FLOOR_Y + 5), 20.5);
crates/horizon-client/examples/probe/emitter_particles_probe.rs
+1
View File
@@ -97,6 +97,7 @@ pub fn main() -> Result<()> {
facts: &facts,
collision: &collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let mut engine = ParticleEngine::new(&root, &Default::default(), &Default::default());
let mut out = BufWriter::new(File::create(&args[2])?);
crates/horizon-client/examples/probe/particle_providers_probe.rs
+1
View File
@@ -194,6 +194,7 @@ pub fn main() -> Result<()> {
facts: &facts,
collision: &collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let v = |key: &str| -> [f64; 3] {
std::array::from_fn(|i| case[key][i].as_f64().unwrap_or(0.0))
crates/horizon-client/src/animate_tick.rs
+1
View File
@@ -612,6 +612,7 @@ fn do_animate_tick(
facts: ctx.facts,
collision: ctx.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
engine.polytone_animate(&level, pos);
let facts = ctx.facts.get(state);
crates/horizon-client/src/game/client_fireworks_tests.rs
+1
View File
@@ -92,6 +92,7 @@ fn a_mods_fireworks_burst_and_bang_on_the_client_only() {
facts: game.res.facts(),
collision: game.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
game.particles.tick(&level);
};
crates/horizon-client/src/game/native_client_particles_fixture.rs
+1
View File
@@ -25,6 +25,7 @@ impl Game<'_> {
facts: self.res.facts(),
collision: self.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
self.particles.tick(&level);
}
crates/horizon-client/src/game/potent_sulfur.rs
+5
View File
@@ -143,6 +143,7 @@ impl Game<'_> {
facts: self.res.facts(),
collision: self.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
find_noxious_gas_source_block(&level, [pos.0, pos.1, pos.2])
}
@@ -198,6 +199,7 @@ impl Game<'_> {
facts: self.res.facts(),
collision: self.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
// The gas reads blocks only, so the mobs it reaches can be found
// before any gets its effect.
@@ -264,6 +266,7 @@ impl Game<'_> {
facts: self.res.facts(),
collision: self.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
can_be_reached_by_noxious_gas(&level, source, eye)
};
@@ -356,6 +359,7 @@ impl Game<'_> {
facts: self.res.facts(),
collision: self.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
let height = unobstructed_block_count(&level, [pos.0, pos.1 + 1, pos.2], water_blocks);
let area = launch_area(pos, height);
@@ -419,6 +423,7 @@ impl Game<'_> {
facts: self.res.facts(),
collision: self.collision,
player: None,
cached_chunk: std::cell::Cell::new(None),
};
unobstructed_block_count(&level, [pos.0, pos.1 + 1, pos.2], water_blocks)
};
crates/horizon-client/src/game/render_tick.rs
+1
View File
@@ -679,6 +679,7 @@ impl Game<'_> {
.player
.as_ref()
.map(|p| ([p.position.x, p.position.y, p.position.z], p.velocity.y)),
cached_chunk: std::cell::Cell::new(None),
};
laps.lap("tp_level");
// Resource packs' Polytone entity emitters on the player (#11486): fog, dust and