tweak: scene2.wgsl visual adjustments

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 11 insertions, 13 deletions

diff --git a/src/effects/scene2.wgsl b/src/effects/scene2.wgsl
index 7df91c3..3221321 100644
--- a/src/effects/scene2.wgsl
+++ b/src/effects/scene2.wgsl
@@ -8,30 +8,28 @@
 @group(0) @binding(2) var<uniform> uniforms: UniformsSequenceParams;
 
 fn N(a: vec3f, p: vec3f) -> f32 {
-    return abs(dot(sin(uniforms.time + 0.1 * p.z + 0.3 * p / a), a + a));
+    return abs(dot(sin(uniforms.time + 0.1 * p.z + 0.6 * p / a), a));
 }
 
 @fragment fn fs_main(in: VertexOutput) -> @location(0) vec4f {
     let r = uniforms.resolution;
-    let frag_coord = vec2f(in.position.x, r.y - in.position.y);
-    let u = (frag_coord + frag_coord - r) / r.y;
+    let uv = in.position.xy;
+    let u = (2. * uv - r.xy) / r.y;
 
     var p = vec3f(0.0);
-    var col = vec4f(0.0);
-    var s: f32 = 0.0;
-
+    var col = vec3f(0.0);
     for (var i: f32 = 0.0; i < 100.0; i += 1.0) {
-        p += vec3f(u * s, s);
-        s = 6.0 + p.y;
-        s -= N(vec3f(0.08), p);
-        s -= N(vec3f(0.2), p);
-        s -= N(vec3f(0.6), p);
+        var s = 6.0 + p.y;
+        s -= N(vec3f(0.15), p);
+        s -= N(vec3f(0.5), p);
+        s -= N(vec3f(1.2), p);
         s = 0.1 + abs(s) * 0.2;
-        col += vec4f(4.0, 2.0, 1.0, 0.0) / s;
+        col += vec3f(3.0, 2.0, 1.0) / s;
+	p += vec3f(u * s, s);
     }
 
     col *= smoothstep(0.8, 0.75, abs(u.y));
     let len_u = max(length(u), 0.0001);
     col = tanh(col / 2000.0 / len_u);
-    return vec4f(col.rgb, 1.0);
+    return vec4f(col, 1.0);
 }