Cannot set a value of false, or 0 for uniform on version 9.0.0-alpha.15

[Seungup]

Actual Result

import { Model } from '@luma.gl/engine';
import { picking } from '@luma.gl/shadertools';

const model = new Model( device, { ... , modules: [ picking ]  } );

model.updateModuleSettings( {  pickingActive: 1  } ); // avaliable.
model.updateModuleSettings( {  pickingActive: true } ); // avaliable.
model.updateModuleSettings( {  pickingActive: [1] } ); // avaliable.
model.updateModuleSettings( {  pickingActive: [true]  } ); // avaliable.
model.draw();
model.updateModuleSettings( {  pickingActive: 0  } ); // not avaliable.
model.updateModuleSettings( {  pickingActive: false  } ); // not avaliable.
model.updateModuleSettings( {  pickingActive: [0] } ); // not avaliable.
model.updateModuleSettings( {  pickingActive: [false]  } ); // not avaliable.
model.draw(); // `picking_uActive` still have `true` value.

// picking.ts

...

function getUniforms(opts = DEFAULT_MODULE_OPTIONS): Record<string, any> {
  const uniforms: Record<string, any> = {};
  if (opts.pickingSelectedColor !== undefined) {
    if (!opts.pickingSelectedColor) {
      uniforms.picking_uSelectedColorValid = 0; // -> set 0
    } else {
      const selectedColor = opts.pickingSelectedColor.slice(0, 3);
      uniforms.picking_uSelectedColorValid = 1;
      uniforms.picking_uSelectedColor = selectedColor;
    }
  }
  if (opts.pickingHighlightColor) {
    const color = Array.from(opts.pickingHighlightColor, (x) => x / 255);
    if (!Number.isFinite(color[3])) {
      color[3] = 1;
    }
    uniforms.picking_uHighlightColor = color;
  }
  if (opts.pickingActive !== undefined) {
    uniforms.picking_uActive = Boolean(opts.pickingActive); // -> set false
    uniforms.picking_uAttribute = Boolean(opts.pickingAttribute); // -> set false
  }
  return uniforms;
}

...

// @luma.gl/webgl
// src/adapter/resources/webgl-render-pipline.ts

...

  _applyUniforms() {
    for (const uniformLayout of this.layout.uniforms || []) {
      const {name, location, type, textureUnit} = uniformLayout;
      const value = this.uniforms[name] || textureUnit; // when uniform value `0` or `false` the value is avaliable but result is can be `undefined` when textureUnit is `undefined`.
      if (value !== undefined) {
        setUniform(this.device.gl, location, type, value);
      }
    }
  }

...

Expected Result

If the value of the uniform is not set, it is possible that the value set in the previous frame will be used.
So, uniform value when 0 or false should be set.

Reproduce Steps

To Do List

• Add label and assign to milestone
• Coding
• Test

Background

To Do List

• Add label and assign to milestone
• Coding
• Doc update
• Whats new update
• Test