WebGLContextAttributes
interface WebGLContextAttributesProperties
alpha
open var alpha: Boolean?antialias
open var antialias: Boolean?depth
open var depth: Boolean?failIfMajorPerformanceCaveat
open var failIfMajorPerformanceCaveat: Boolean?preferLowPowerToHighPerformance
open var preferLowPowerToHighPerformance: Boolean?premultipliedAlpha
open var premultipliedAlpha: Boolean?preserveDrawingBuffer
open var preserveDrawingBuffer: Boolean?stencil
open var stencil: Boolean?