DriftEngineDriftTexture · function
sampleOverlay
Read every channel at a coordinate into out. False where nothing has been written there.
Explained in DriftTexture.
function sampleOverlay(overlay: Overlay, u: number, v: number, out: Float32Array): booleanimport { sampleOverlay } from '@driftengine/texture';Parameters
| Parameter | Type | Description |
|---|---|---|
overlay | Overlay | |
u | number | |
v | number | |
out | Float32Array |
In depth
False is the ordinary answer and the important one: it is what tells a sampler to use the base unchanged rather than compositing a zero over it.