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.

1 files changed, 40 insertions, 0 deletions

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;
+}