initGfx(gl: WebGLRenderingContext, opts?:

texFilter?: TexFilter

):

gl: WebGLRenderingContext

opts:

texFilter?: TexFilter

onDestroy(action: ()=>unknown): void

destroy(): void

pushTexture2D(item: WebGLTexture): void

popTexture2D(): void

pushArrayBuffer(item: WebGLBuffer): void

popArrayBuffer(): void

pushElementArrayBuffer(item: WebGLBuffer): void

popElementArrayBuffer(): void

pushFramebuffer(item: WebGLFramebuffer): void

popFramebuffer(): void

pushRenderbuffer(item: WebGLRenderbuffer): void

popRenderbuffer(): void

pushViewport(item:

x: number

y: number

w: number

h: number

): void

popViewport(): void

pushProgram(item: WebGLProgram): void

popProgram(): void

setVertexFormat(fmt: VertexFormat): void