1. DomName('WebGLRenderingContext.texImage2DCanvas')
  2. DocsEditable()
void texImage2DCanvas(int target, int level, int internalformat, int format, int type, CanvasElement canvas)

Source 

@DomName('WebGLRenderingContext.texImage2DCanvas')
@DocsEditable()
void texImage2DCanvas(int target, int level, int internalformat, int format, int type, CanvasElement canvas) => _blink.BlinkWebGLRenderingContext.instance.texImage2D_Callback_6_(unwrap_jso(this), target, level, internalformat, format, type, unwrap_jso(canvas));