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