Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

[Merged by Bors] - use const Vec2 in lights cluster and bounding box when possible #4602

Closed
wants to merge 5 commits into from
Closed

[Merged by Bors] - use const Vec2 in lights cluster and bounding box when possible #4602

Changes from all commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
9c13592
use const Vec3 when clamping the bounding box for lights
mockersf Apr 26, 2022
2178881
and 2 vec2 too
mockersf Apr 26, 2022
b2282db
name :facepalm:
mockersf Apr 26, 2022
1e3cce5
do not use a fancy z clamp that doesn't mean anything
mockersf Apr 27, 2022
bb4e130
remove extra import
mockersf Apr 27, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
34 changes: 18 additions & 16 deletions crates/bevy_pbr/src/light.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,9 @@ use std::collections::HashSet;

use bevy_asset::Assets;
use bevy_ecs::prelude::*;
use bevy_math::{Mat4, UVec2, UVec3, Vec2, Vec3, Vec3A, Vec3Swizzles, Vec4, Vec4Swizzles};
use bevy_math::{
const_vec2, Mat4, UVec2, UVec3, Vec2, Vec3, Vec3A, Vec3Swizzles, Vec4, Vec4Swizzles,
};
use bevy_reflect::prelude::*;
use bevy_render::{
camera::{Camera, CameraProjection, OrthographicProjection},
Expand Down Expand Up @@ -487,8 +489,7 @@ fn ndc_position_to_cluster(
view_z: f32,
) -> UVec3 {
let cluster_dimensions_f32 = cluster_dimensions.as_vec3();
let frag_coord =
(ndc_p.xy() * Vec2::new(0.5, -0.5) + Vec2::splat(0.5)).clamp(Vec2::ZERO, Vec2::ONE);
let frag_coord = (ndc_p.xy() * VEC2_HALF_NEGATIVE_Y + VEC2_HALF).clamp(Vec2::ZERO, Vec2::ONE);
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Yay named constants 🎉

let xy = (frag_coord * cluster_dimensions_f32.xy()).floor();
let z_slice = view_z_to_z_slice(
cluster_factors,
Expand All @@ -501,6 +502,9 @@ fn ndc_position_to_cluster(
.clamp(UVec3::ZERO, cluster_dimensions - UVec3::ONE)
}

const VEC2_HALF: Vec2 = const_vec2!([0.5, 0.5]);
const VEC2_HALF_NEGATIVE_Y: Vec2 = const_vec2!([0.5, -0.5]);

// Calculate bounds for the light using a view space aabb.
// Returns a (Vec3, Vec3) containing min and max with
// x and y in normalized device coordinates with range [-1, 1]
Expand Down Expand Up @@ -575,24 +579,22 @@ fn cluster_space_light_aabb(
.max(light_aabb_ndc_xymax_far),
);

// pack unadjusted z depth into the vecs
let (aabb_min, aabb_max) = (
light_aabb_ndc_min.xy().extend(light_aabb_view_min.z),
light_aabb_ndc_max.xy().extend(light_aabb_view_max.z),
// clamp to ndc coords without depth
let (aabb_min_ndc, aabb_max_ndc) = (
light_aabb_ndc_min.xy().clamp(NDC_MIN, NDC_MAX),
light_aabb_ndc_max.xy().clamp(NDC_MIN, NDC_MAX),
);
// clamp to ndc coords

// pack unadjusted z depth into the vecs
(
aabb_min.clamp(
Vec3::new(-1.0, -1.0, f32::MIN),
Vec3::new(1.0, 1.0, f32::MAX),
),
aabb_max.clamp(
Vec3::new(-1.0, -1.0, f32::MIN),
Vec3::new(1.0, 1.0, f32::MAX),
),
aabb_min_ndc.extend(light_aabb_view_min.z),
aabb_max_ndc.extend(light_aabb_view_max.z),
)
}

const NDC_MIN: Vec2 = const_vec2!([-1.0, -1.0]);
const NDC_MAX: Vec2 = const_vec2!([1.0, 1.0]);

// Sort point lights with shadows enabled first, then by a stable key so that the index
// can be used to limit the number of point light shadows to render based on the device and
// we keep a stable set of lights visible
Expand Down