Renderer · interface

GlobalFieldCascade

One level of the clipmap: a grid the composer fills and sampleGlobalField reads.

interface GlobalFieldCascade

import type { GlobalFieldCascade } from '@driftengine/core';

Properties

Name	Type	Description
`field`readonly	`Float32Array`
`albedo`readonly	`Float32Array`	The colour of whatever surface won the union at each sample, three floats a sample. More A union loses which instance won, and a ray that lands on a wall needs to know what colour it is. `demo/dev/bounce.html` is what made this necessary: a trace whose radiance came from a rasterised capture could not follow a wall that changed colour, and one that read the probe volume's irradiance returned the same answer for a red wall and a white one — irradiance is light arriving, and what leaves a surface is that times its albedo. White where no instance reached, rather than black: the colour of a sample no ray can hit is never read, and black would turn a read that did happen into light quietly vanishing instead of a picture that is obviously wrong.
`dims`readonly	`readonly [number, number, number]`
`bounds`readonly	`Float32Array`	Where this cascade stands, written by `composeGlobalField`. Six floats.
`step`	`number`	Metres between samples, the same on all three axes. Written by `composeGlobalField`.