1 files changed, 35 insertions, 0 deletions
diff --git a/assets/final/shaders/particle_compute.wgsl b/assets/final/shaders/particle_compute.wgsl
new file mode 100644
index 0000000..a6c96db
--- /dev/null
+++ b/assets/final/shaders/particle_compute.wgsl
@@ -0,0 +1,35 @@
+struct Particle {
+    pos: vec4<f32>,
+    vel: vec4<f32>,
+    rot: vec4<f32>,
+    color: vec4<f32>,
+};
+
+struct Uniforms {
+    audio_peak: 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;
+
+@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];
+    let new_pos = p.pos.xyz + p.vel.xyz * 0.016;
+    p.pos = vec4<f32>(new_pos, p.pos.w);
+    p.vel.y = p.vel.y - 0.01 * (1.0 + uniforms.audio_peak * 5.0);
+    p.rot.x = p.rot.x + p.rot.y * 0.016;
+    if (p.pos.y < -1.5) {
+        p.pos.y = 1.5;
+        p.pos.x = (f32(i % 100u) / 50.0) - 1.0 + (uniforms.audio_peak * 0.5);
+        p.vel.y = 0.0;
+    }
+    particles[i] = p;
+}