1 files changed, 44 insertions, 0 deletions
diff --git a/assets/final/shaders/particle_render.wgsl b/assets/final/shaders/particle_render.wgsl
new file mode 100644
index 0000000..6f115ec
--- /dev/null
+++ b/assets/final/shaders/particle_render.wgsl
@@ -0,0 +1,44 @@
+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> particles: array<Particle>;
+@group(0) @binding(1) var<uniform> uniforms: Uniforms;
+
+struct VSOut {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) color: vec4<f32>,
+};
+
+@vertex fn vs_main(@builtin(vertex_index) vi: u32, @builtin(instance_index) ii: u32) -> VSOut {
+    let p = particles[ii];
+    let size = 0.02 + p.pos.z * 0.01 + uniforms.audio_peak * 0.02;
+    var offsets = array<vec2<f32>, 6>(
+        vec2<f32>(-1, -1),
+        vec2<f32>(1, -1),
+        vec2<f32>(-1, 1),
+        vec2<f32>(-1, 1),
+        vec2<f32>(1, -1),
+        vec2<f32>(1, 1)
+    );
+    let offset = offsets[vi];
+    let c = cos(p.rot.x);
+    let s = sin(p.rot.x);
+    let rotated_offset = vec2<f32>(offset.x * c - offset.y * s, offset.x * s + offset.y * c);
+    let pos = vec2<f32>(p.pos.x + rotated_offset.x * size / uniforms.aspect_ratio, p.pos.y + rotated_offset.y * size);
+    return VSOut(vec4<f32>(pos, 0.0, 1.0), p.color * (0.5 + 0.5 * uniforms.audio_peak));
+}
+
+@fragment fn fs_main(@location(0) color: vec4<f32>) -> @location(0) vec4<f32> {
+    return color;
+}