docs: Don't use unnecessary comptime in Three.js Attractors example (#2053)

Author: iwoplaza

apps/typegpu-docs/src/examples/threejs/attractors/index.ts

@@ -11,7 +11,6 @@ import {
 } from 'three/addons/controls/TransformControls.js';
 import { color, uniform } from 'three/tsl';
 import * as THREE from 'three/webgpu';
-import tgpu from 'typegpu';
 import * as d from 'typegpu/data';
 import * as std from 'typegpu/std';
 
@@ -151,7 +150,7 @@ const velocityBuffer = t3.instancedArray(count, d.vec3f);
 
 // typegpu accessors
 
-const comptimeRandom = tgpu['~unstable'].comptime(() => Math.random());
+const seed = Math.random();
 
 const velocityBufferAttributeTA = t3.fromTSL(
   velocityBuffer.node.toAttribute(),
@@ -174,7 +173,7 @@ const sphericalToVec3 = (phi: number, theta: number) => {
 const initCompute = t3.toTSL(() => {
   'use gpu';
   const instanceIndex = t3.instanceIndex.$;
-  randf.seed(instanceIndex / count + comptimeRandom());
+  randf.seed(instanceIndex / count + seed);
 
   const basePosition = randf.inUnitCube()
     .sub(0.5)
@@ -194,7 +193,7 @@ reset();
 
 const getParticleMassMultiplier = () => {
   'use gpu';
-  randf.seed(t3.instanceIndex.$ / count + comptimeRandom());
+  randf.seed(t3.instanceIndex.$ / count + seed);
   // in the original example, the values are remapped to [-1/3, 1] instead of [1/4, 1]
   const base = 0.25 + randf.sample() * 3 / 4;
   return base;