playcanvas/build/playcanvas/src/scene/graphics/noise-textures.js

Open-source WebGL/WebGPU 3D engine for the web

import { blueNoiseData } from "../../core/math/blue-noise.js";
import { ADDRESS_REPEAT, FILTER_NEAREST, PIXELFORMAT_RGBA8, TEXTURETYPE_DEFAULT } from "../../platform/graphics/constants.js";
import { DeviceCache } from "../../platform/graphics/device-cache.js";
import { Texture } from "../../platform/graphics/texture.js";
const createTexture = (device, namePrefix, size, data) => {
	const texture = new Texture(device, {
		name: `${namePrefix}${size}`,
		width: size,
		height: size,
		format: PIXELFORMAT_RGBA8,
		addressU: ADDRESS_REPEAT,
		addressV: ADDRESS_REPEAT,
		type: TEXTURETYPE_DEFAULT,
		magFilter: FILTER_NEAREST,
		minFilter: FILTER_NEAREST,
		anisotropy: 1,
		mipmaps: false
	});
	texture.lock().set(data);
	texture.unlock();
	return texture;
};
const deviceCacheBlueNoise = new DeviceCache();
const getBlueNoiseTexture = (device) => {
	return deviceCacheBlueNoise.get(device, () => {
		const data = blueNoiseData();
		const size = Math.sqrt(data.length / 4);
		return createTexture(device, "BlueNoise", size, data);
	});
};
export {
	getBlueNoiseTexture
};