Function: toDeviceGLRect()

function toDeviceGLRect(rect, canvasCssHeight, pixelRatio, out?): ViewportRect;

Experimental

Convert a CSS rect (top-left origin) to a device-px GL rect (bottom-left origin) the way three.js setViewport/setScissor do: flip against the CSS canvas height, scale by DPR, round.

Parameters

Parameter	Type
rect	Readonly<ViewportRect>
canvasCssHeight	number
pixelRatio	number
out	ViewportRect

Returns

ViewportRect