Update world.wgsl

world.wgsl

@@ -1,39 +1,32 @@
 @group(0) @binding(0)
 var<storage, read_write> field : array<f32>;
 
-struct Params {
-  power : f32,
-  time  : f32,
-}
-
 @group(0) @binding(1)
-var<uniform> params : Params;
+var<uniform> params : vec2<f32>; // power, time
 
 fn mandelbulb(p: vec3<f32>, power: f32) -> f32 {
   var z = p;
   var dr = 1.0;
   var r = 0.0;
 
-  for (var i = 0; i < 8; i = i + 1) {
+  for (var i = 0; i < 8; i++) {
     r = length(z);
     if (r > 2.0) { break; }
 
     let theta = acos(z.z / r);
     let phi = atan2(z.y, z.x);
+
     dr = pow(r, power - 1.0) * power * dr + 1.0;
 
     let zr = pow(r, power);
-    let newTheta = theta * power;
-    let newPhi = phi * power;
-
     z = zr * vec3<f32>(
-      sin(newTheta) * cos(newPhi),
-      sin(newTheta) * sin(newPhi),
-      cos(newTheta)
+      sin(theta * power) * cos(phi * power),
+      sin(theta * power) * sin(phi * power),
+      cos(theta * power)
     ) + p;
   }
 
-  return 0.5 * log(r) * r / dr;
+  return clamp(1.0 - r / dr, 0.0, 1.0);
 }
 
 @compute @workgroup_size(64)
@@ -42,8 +35,7 @@ fn main(@builtin(global_invocation_id) gid : vec3<u32>) {
   if (i >= arrayLength(&field)) { return; }
 
   let x = f32(i) / f32(arrayLength(&field)) * 2.0 - 1.0;
-  let p = vec3<f32>(x, 0.0, sin(params.time) * 0.5);
+  let p = vec3<f32>(x, 0.0, sin(params.y) * 0.5);
 
-  let d = mandelbulb(p, params.power);
-  field[i] = clamp(1.0 - d, 0.0, 1.0);
+  field[i] = mandelbulb(p, params.x);
 }