Worker

Loader for compressed textures in the Crunch file format

Loader	Characteristic
File Format	CRN
File Extension	.crn
File Type	Binary
Data Format	TextureLevel[]
Supported APIs	load, parse

Usage

import {CrunchWorkerLoader} from '@loaders.gl/textures';
import {load} from '@loaders.gl/core';

const mipLevels = await load(url, CrunchWorkerLoader);
for (const level of mipLevels) {
  console.log(level.shape, level.format, level.textureFormat);
}

Data Format

Returns TextureLevel[], one entry per mip level.

Each level includes:

• shape: 'texture-level'
• compressed
• format
• textureFormat
• width
• height
• data
• levelSize when available

Options

Option	Type	Default	Description
N/A

Module Overrides

Use options.modules to override the Crunch runtime used by CrunchWorkerLoader.

• modules.crunch: supply a preloaded Crunch decoder factory.
• 'crunch.js': override the URL used for the Crunch decoder script.