DriftEngineRenderer · function
placeCascade
Put one cascade where the camera is, and answer its half-extent.
Explained in Hello world.
function placeCascade(cascade: GlobalFieldCascade, level: number, radius: number, cameraPos: ReadonlyVec3): numberimport { placeCascade } from '@driftengine/core';Parameters
| Parameter | Type | Description |
|---|---|---|
cascade | GlobalFieldCascade | |
level | number | |
radius | number | |
cameraPos | ReadonlyVec3 |
In depth
Exported because the compute path needs the same placement and two spellings drift. A pass filling these on a device has to agree with this about where every cascade stands, to the last bit: disagree by a fraction of a step and the fade between cascades lands somewhere different on each side, which is a seam that appears only when both paths are compared.
The snapping is the decision. See composeGlobalField for why a grid centred on the exact camera
position makes the whole field shimmer.