From 7c66176026ef142d3dde9a8df30f46d37bf1c52f Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Wed, 28 Jan 2026 01:42:01 +0100
Subject: update SESSION_NOTES

---
 src/gpu/shader.wgsl | 43 ++++++++++++++++++++++++++++++++++---------
 1 file changed, 34 insertions(+), 9 deletions(-)

(limited to 'src/gpu')

diff --git a/src/gpu/shader.wgsl b/src/gpu/shader.wgsl
index 4e0ec11..371e27f 100644
--- a/src/gpu/shader.wgsl
+++ b/src/gpu/shader.wgsl
@@ -1,14 +1,39 @@
+struct Uniforms {
+    audio_peak : f32,
+};
+
+@group(0) @binding(0) var<uniform> uniforms : Uniforms;
+
 @vertex
-fn vs_main(@builtin(vertex_index) i: u32) -> @builtin(position) vec4<f32> {
-    var pos = array<vec2<f32>, 3>(
-        vec2<f32>(-1.0, -1.0),
-        vec2<f32>( 3.0, -1.0),
-        vec2<f32>(-1.0,  3.0)
-    );
-    return vec4<f32>(pos[i], 0.0, 1.0);
+fn vs_main(@builtin(vertex_index) vertex_index: u32) -> @builtin(position) vec4<f32> {
+    let num_sides = 7.0;
+    let angle = f32(vertex_index) * 2.0 * PI / num_sides;
+    
+    // Base size and pulsating scale based on audio peak
+    let base_scale = 0.5;
+    let pulse_scale = 0.2 * uniforms.audio_peak;
+    let scale = base_scale + pulse_scale;
+
+    let x = scale * cos(angle);
+    let y = scale * sin(angle);
+
+    // Vertices for a heptagon (fan from center)
+    if (vertex_index == 0) { return vec4<f32>(0.0, 0.0, 0.0, 1.0); } // Center
+    else if (vertex_index == 1) { return vec4<f32>(x, y, 0.0, 1.0); } // First point
+    else { // Subsequent points connect to the center and previous point
+        let prev_angle = f32(vertex_index - 1) * 2.0 * PI / num_sides;
+        let prev_x = scale * cos(prev_angle);
+        let prev_y = scale * sin(prev_angle);
+        return vec4<f32>(prev_x, prev_y, 0.0, 1.0);
+    }
 }
 
 @fragment
 fn fs_main() -> @location(0) vec4<f32> {
-    return vec4<f32>(0.0, 0.0, 0.0, 1.0);
-}
+    // Simple color, maybe with a hue shift based on audio peak
+    let hue = uniforms.audio_peak * 0.5; // Adjust as needed for desired color range
+    let r = sin(hue + 0.0) * 0.5 + 0.5;
+    let g = sin(hue + 2.0) * 0.5 + 0.5;
+    let b = sin(hue + 4.0) * 0.5 + 0.5;
+    return vec4<f32>(r, g, b, 1.0);
+}
\ No newline at end of file
-- 
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