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Only compute interleaved_gradient_noise() once

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Marco Buono 2023-05-11 01:43:32 -03:00
parent 44da7267e6
commit 0dbec526e7
1 changed files with 3 additions and 2 deletions
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5
crates/bevy_pbr/src/render/pbr_lighting.wgsl
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@ -357,12 +357,13 @@ fn fetch_transmissive_background(offset_position: vec2<f32>, frag_coord: vec3<f3
// Number of taps scale with blur intensity
let num_taps = i32(max(min(blur_intensity * 5.0, 1.0) * f32(MAX_TRANSMISSIVE_TAPS), 1.0));
let num_spirals = (num_taps >> 3u) + 1;
let random_angle = interleaved_gradient_noise(frag_coord.xy);
var result = vec4<f32>(0.0);
for (var i: i32 = 0; i < num_taps; i = i + 1) {
let current_spiral = (i >> 3u);
let random_angle = f32(current_spiral) / f32(num_spirals) * 2.0 * PI + 2.0 * PI * interleaved_gradient_noise(frag_coord.xy);
let m = vec2(sin(random_angle), cos(random_angle));
let angle = (random_angle + f32(current_spiral) / f32(num_spirals)) * 2.0 * PI;
let m = vec2(sin(angle), cos(angle));
let rotation_matrix = mat2x2(
m.y, -m.x,
m.x, m.y