From f32afcbeffa0e8b947457c67c73566da4ebf33cc Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Tue, 3 Feb 2026 08:18:13 +0100
Subject: refactor: Shader Asset Integration (Task #24)

Extracted all hardcoded WGSL shaders into external assets. Updated AssetManager to handle shader snippets. Refactored Renderer3D, VisualDebug, and Effects to load shaders via the AssetManager, enabling better shader management and composition.
---
 assets/final/shaders/particle_spray_compute.wgsl | 40 ++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 assets/final/shaders/particle_spray_compute.wgsl

(limited to 'assets/final/shaders/particle_spray_compute.wgsl')

diff --git a/assets/final/shaders/particle_spray_compute.wgsl b/assets/final/shaders/particle_spray_compute.wgsl
new file mode 100644
index 0000000..55fa8e9
--- /dev/null
+++ b/assets/final/shaders/particle_spray_compute.wgsl
@@ -0,0 +1,40 @@
+struct Particle {
+    pos: vec4<f32>,
+    vel: vec4<f32>,
+    rot: vec4<f32>,
+    color: vec4<f32>,
+};
+
+struct Uniforms {
+    intensity: f32,
+    aspect_ratio: f32,
+    time: f32,
+    beat: f32,
+};
+
+@group(0) @binding(0) var<storage, read_write> particles: array<Particle>;
+@group(0) @binding(1) var<uniform> uniforms: Uniforms;
+
+fn hash(p: f32) -> f32 {
+    return fract(sin(p) * 43758.5453);
+}
+
+@compute @workgroup_size(64)
+fn main(@builtin(global_invocation_id) id: vec3<u32>) {
+    let i = id.x;
+    if (i >= arrayLength(&particles)) {
+        return;
+    }
+    var p = particles[i];
+    if (p.pos.w <= 0.0) {
+        let r = hash(f32(i) + uniforms.time);
+        let angle = r * 6.28318;
+        p.pos = vec4<f32>(0.0, 0.0, 0.0, 1.0);
+        p.vel = vec4<f32>(cos(angle), sin(angle), 0.0, 0.0) * (0.5 + hash(r) * 0.5) * (1.0 + uniforms.intensity * 2.0);
+        p.color = vec4<f32>(hash(r + 0.1), hash(r + 0.2), 1.0, 1.0);
+    }
+    let new_pos = p.pos.xyz + p.vel.xyz * 0.016;
+    p.pos = vec4<f32>(new_pos, p.pos.w - 0.01 * (1.0 + uniforms.beat));
+    p.vel.y = p.vel.y - 0.01;
+    particles[i] = p;
+}
-- 
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