refine: add milky translucency and curved reflections to Dock

2026-10-24 20:16:34 +08:00
parent 8abb132bc3
commit db953b8b3d
8 changed files with 84 additions and 32 deletions
@@ -29,7 +29,7 @@ void main() {
  float rim = 1.0 - smoothstep(0.0, radius * 0.46, depth);
  // Curved glass bends rays most at its edge, with subtle centre magnification.
  vec2 ray = centre + local / (1.0 + u_strength * 0.075)
-      - normal * rim * rim * radius * u_strength * 0.20;
+      - normal * rim * rim * radius * u_strength * 0.23;
  vec4 colour = texture(u_background, sampleUV(ray));
  float dispersion = u_strength * rim * 0.65;
  colour.r = texture(u_background, sampleUV(ray + normal * dispersion)).r;
@@ -41,6 +41,9 @@ void main() {
  vec4 reflected = texture(u_background,
      sampleUV(point + normal * radius * 0.40));
  colour = mix(colour, reflected, min(edge_light * 0.18, 0.22));
+  // A grazing-angle white reflection gives the curved rim visible thickness;
+  // the broad centre continues to transmit the live, lightly softened scene.
+  colour.rgb = mix(colour.rgb, vec3(colour.a), min(edge_light * 0.12, 0.16));
  float reflection = edge_light * 0.07;
  colour.rgb = min(colour.rgb + reflection * colour.a, vec3(colour.a));
  frag_color = colour;